WO2020189147A1 - 半導体回路および電子機器 - Google Patents
半導体回路および電子機器 Download PDFInfo
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- WO2020189147A1 WO2020189147A1 PCT/JP2020/006281 JP2020006281W WO2020189147A1 WO 2020189147 A1 WO2020189147 A1 WO 2020189147A1 JP 2020006281 W JP2020006281 W JP 2020006281W WO 2020189147 A1 WO2020189147 A1 WO 2020189147A1
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C11/00—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor
- G11C11/02—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using magnetic elements
- G11C11/16—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using magnetic elements using elements in which the storage effect is based on magnetic spin effect
- G11C11/165—Auxiliary circuits
- G11C11/1697—Power supply circuits
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C17/00—Read-only memories programmable only once; Semi-permanent stores, e.g. manually-replaceable information cards
- G11C17/14—Read-only memories programmable only once; Semi-permanent stores, e.g. manually-replaceable information cards in which contents are determined by selectively establishing, breaking or modifying connecting links by permanently altering the state of coupling elements, e.g. PROM
- G11C17/16—Read-only memories programmable only once; Semi-permanent stores, e.g. manually-replaceable information cards in which contents are determined by selectively establishing, breaking or modifying connecting links by permanently altering the state of coupling elements, e.g. PROM using electrically-fusible links
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C17/00—Read-only memories programmable only once; Semi-permanent stores, e.g. manually-replaceable information cards
- G11C17/14—Read-only memories programmable only once; Semi-permanent stores, e.g. manually-replaceable information cards in which contents are determined by selectively establishing, breaking or modifying connecting links by permanently altering the state of coupling elements, e.g. PROM
- G11C17/18—Auxiliary circuits, e.g. for writing into memory
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10B—ELECTRONIC MEMORY DEVICES
- H10B20/00—Read-only memory [ROM] devices
- H10B20/20—Programmable ROM [PROM] devices comprising field-effect components
- H10B20/25—One-time programmable ROM [OTPROM] devices, e.g. using electrically-fusible links
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D84/00—Integrated devices formed in or on semiconductor substrates that comprise only semiconducting layers, e.g. on Si wafers or on GaAs-on-Si wafers
- H10D84/80—Integrated devices formed in or on semiconductor substrates that comprise only semiconducting layers, e.g. on Si wafers or on GaAs-on-Si wafers characterised by the integration of at least one component covered by groups H10D12/00 or H10D30/00, e.g. integration of IGFETs
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N50/00—Galvanomagnetic devices
- H10N50/10—Magnetoresistive devices
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C11/00—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor
- G11C11/02—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using magnetic elements
- G11C11/16—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using magnetic elements using elements in which the storage effect is based on magnetic spin effect
- G11C11/161—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using magnetic elements using elements in which the storage effect is based on magnetic spin effect details concerning the memory cell structure, e.g. the layers of the ferromagnetic memory cell
Definitions
- the present disclosure relates to a semiconductor circuit capable of storing information and an electronic device provided with such a semiconductor circuit.
- Patent Document 1 discloses a technique for constructing an OTP memory using a magnetic tunnel junction (MTJ) element.
- MTJ magnetic tunnel junction
- the semiconductor circuit according to the embodiment of the present disclosure includes a first storage element, a first transistor, and a second transistor.
- the first storage element has a first terminal, a second terminal connected to the first node, and a tunnel barrier film, and can store information by destroying the tunnel barrier film. is there.
- the first transistor has a drain connected to the first node, a source, a gate, and a back gate connected to the second node.
- the second transistor has a drain, a source connected to the second node, and a gate connected to the first node.
- the electronic device includes a first storage element, a first transistor, a second transistor, and a processing circuit.
- the first storage element has a first terminal, a second terminal connected to the first node, and a tunnel barrier film, and can store information by destroying the tunnel barrier film. is there.
- the first transistor has a drain connected to the first node, a source, a gate, and a back gate connected to the second node.
- the second transistor has a drain, a source connected to the second node, and a gate connected to the first node.
- the processing circuit can perform processing based on the information stored in the first storage element.
- the semiconductor circuit and the electronic device are provided with a first storage element having a tunnel barrier film and capable of storing information by breaking the tunnel barrier film.
- the second terminal of the first storage element is connected to the first node.
- the drain of the first transistor is connected to the first node and the backgate of the first transistor is connected to the second node.
- the gate of the second transistor is connected to the first node and the source of the second transistor is connected to the second node.
- FIG. 1 shows a configuration example of a semiconductor circuit (semiconductor circuit 1) according to an embodiment.
- the semiconductor circuit 1 can operate based on the stored information.
- the semiconductor circuit 1 is formed on one semiconductor chip in this example.
- the semiconductor circuit 1 includes a processing circuit 11, a memory circuit 12, and a memory circuit 20.
- the processing circuit 11 is configured to include, for example, a digital circuit or an analog circuit, and is configured to perform predetermined processing.
- the processing circuit 11 is designed to perform processing using, for example, the information stored in the memory circuits 12 and 20.
- the memory circuit 12 is a non-volatile memory that can store information and can rewrite the information.
- the memory circuit 12 has a plurality of memory cells. Each memory cell has a storage element M.
- the storage element M is a spin injection magnetization reversal type (STT; Spin Transfer Torque) magnetic tunnel junction element that stores information by changing the direction of magnetization of the free layer F (described later) by spin injection. Is.
- the storage element M includes a free layer F, a tunnel barrier layer T, and a pinned layer P.
- the pinned layer P is composed of a ferromagnet whose magnetization direction is fixed, for example, in the direction perpendicular to the film surface.
- the free layer F is composed of a ferromagnet whose magnetization direction changes, for example, in the direction perpendicular to the film surface according to the inflowing spin polarization current.
- the tunnel barrier layer T is configured to break the magnetic coupling between the pinned layer P and the free layer F and to allow a tunnel current to flow.
- the tunnel barrier layer T is constructed by using a material such as magnesium oxide (MgO).
- MgO magnesium oxide
- the composition is not limited to this, and instead, for example, alumina may be used.
- the memory circuit 12 writes information to the memory element M by passing a current through the memory element M and setting the direction of magnetization in the free layer F of the memory element M.
- the resistance value between the terminals changes according to the direction of magnetization in the free layer F.
- the memory element M may have two resistance states RL and RH that are distinguishable from each other.
- the resistance state RH is a state in which the resistance value is high
- the resistance state RL is a state in which the resistance value is low.
- the resistance value in the resistance state RL is, for example, about 10 k ⁇ .
- the memory circuit 20 is a so-called OTP memory that can store information and can write information once.
- FIG. 2 shows an example of a configuration of the memory circuit 20.
- the memory circuit 20 includes a plurality of memory cell arrays MA (32 memory cell array MA [0], MA [1], ..., MA [31] in this example) and a plurality of read / write unit IOs (32 in this example). It has a read / write unit IO [0], IO [1], ..., IO [31]), a word line drive unit 21, and a control unit 22.
- a plurality of memory cell array MAs are provided corresponding to a plurality of read / write unit IOs.
- Each of the plurality of memory cell array MAs has a plurality of memory cells MC arranged in a matrix.
- FIG. 3 shows a configuration example of the memory cell array MA.
- the memory cell array MA has a plurality of word lines WL, a plurality of bit lines BL, a plurality of source lines SL, and a voltage line VL.
- the word line WL is provided so as to extend in the row direction (horizontal direction in FIG. 3) and is connected to the word line driving unit 21.
- the word line WL is provided so as to traverse a plurality of memory cell arrays MA [0] to MA [31].
- the bit line BL is provided so as to extend in the column direction (vertical direction in FIG. 3) and is connected to the read / write unit IO.
- the source line SL is provided so as to extend in the row direction.
- the source line SL is grounded in this example.
- the voltage line VL is provided so as to extend in the row direction and is connected to the read / write unit IO.
- the memory cell array MA has a plurality of memory cells MC and a plurality of transistors TRA.
- Each of the plurality of memory cell MCs has a storage element M and a transistor TRC.
- the memory element M includes a free layer F, a tunnel barrier layer T, and a pinned layer P. That is, the storage element M of the memory circuit 20 has the same configuration as the storage element M of the memory circuit 12. In the memory cell MC, information is stored by destroying the tunnel barrier layer T of the storage element M. Specifically, the resistance value of the storage element M decreases as the tunnel barrier layer T is destroyed, similar to the so-called antifuse.
- the memory element M may have two resistance states RL and RS that can be distinguished from each other.
- the resistance state RS is a resistance state after short-circuit failure.
- the resistance value in the resistance state RS is lower than the resistance value in the resistance state RL.
- One end of the storage element M is connected to the bit line BL, and the other end is connected to the node N1.
- the free layer F of the storage element M is connected to the bit line BL
- the pinned layer P is connected to the node N1.
- the present invention is not limited to this, and instead, for example, the pinned layer P may be connected to the bit line BL and the free layer F may be connected to the node N1.
- the transistor TRC is an N-type MOS (Metal Oxide Semiconductor) transistor, the drain is connected to the node N1, the source is connected to the source line SL, the gate is connected to the word line WL, and the back gate is connected to the node N2. Will be done. Nodes N2 of memory cells MC for one row arranged side by side in the row direction (horizontal direction in FIG. 3) are connected to each other. Specifically, the transistor TRC (transistor group 100 in FIG. 3) of the memory cell MC for one row is formed in one P-type well (P well).
- P well P-type well
- FIG. 4 shows a configuration example of the transistor group 100.
- an N-type region 101N is formed on the P-type semiconductor substrate 100P, and a P-well 102P is formed on the N-type region 101N.
- the semiconductor substrate 100P and P well 102P are electrically insulated from each other by the N-type region 101N.
- the transistor TRC of the memory cell MC for one row is formed in this P well 102P. As a result, the back gates of these transistor TRCs are electrically connected to each other.
- the transistor TRCs of the memory cell MC for one row are formed in one P well, but the present invention is not limited to this, and these plurality of transistor TRCs are formed in each of the plurality of P wells. May be good.
- the nodes N1 of the memory cells MC for one row arranged side by side in the row direction are connected to each other.
- Each of the plurality of transistors TRA is an N-type MOS transistor.
- the plurality of transistor TRAs are provided corresponding to the plurality of rows of the memory cell MC.
- the gate of the transistor TRA is connected to the node N1 of the plurality of memory cell MCs belonging to the corresponding row, the drain is connected to the voltage line VL, and the source is connected to the node N2 of the plurality of memory cell MCs belonging to the corresponding row. Will be done.
- the word line driving unit 21 (FIG. 2) is configured to select one of the plurality of word line WLs by driving a plurality of word line WLs based on an instruction from the control unit 22. ..
- the read / write unit IO is configured to drive a plurality of bit lines BL and voltage lines VL and read information stored in the memory cell array MA based on an instruction from the control unit 22. As shown in FIG. 3, the read / write unit IO includes a column switch 31, a voltage generation unit 32, a sense amplifier 33, and a drive unit 34.
- the column switch 31 selects one of the plurality of bit line BLs based on the instruction from the control unit 22, connects the selected bit line BL to the voltage generation unit 32, and connects the selected bit line BL to the voltage generation unit 32. It is configured to float the bit lines BL other than. Further, in the read operation, the column switch 31 selects one of the plurality of bit line BLs based on the instruction from the control unit 22, connects the selected bit line BL to the sense amplifier 33, and connects the selected bit line BL to the sense amplifier 33.
- the bit lines BL other than the above are configured to be in a floating state.
- the plurality of column switches 31 of the plurality of read / write units IO are adapted to select the same bit line BL from each other based on the instruction from the control unit 22.
- the voltage generation unit 32 is configured to generate a ground voltage or a blow voltage applied to the selected bit line BL based on an instruction from the control unit 22 in the writing operation.
- the sense amplifier 33 In the read operation, the sense amplifier 33 generates a read voltage Vread applied to the selected bit line BL based on the instruction from the control unit 22, and also generates a read voltage Vread based on the current flowing through the selected bit line BL. It is configured to read the information stored in the memory cell MC.
- the read voltage Vread can be, for example, a voltage lower than the blow voltage.
- the drive unit 34 is configured to drive the voltage line VL based on the instruction from the control unit 22.
- the control unit 22 (FIG. 2) has a word line drive unit 21 and a plurality of units so as to write information to the memory cells MC of the plurality of memory cell array MAs based on the write command and the write data supplied from the processing circuit 11. It is configured to control the operation of the read / write part IO of. Further, the control unit 22 operates the word line drive unit 21 and the plurality of read / write units IO so as to read information from the memory cells MC of the plurality of memory cell array MAs based on the read command supplied from the processing circuit 11. It is designed to be controlled.
- the storage element M corresponds to a specific example of the "first storage element” and the “second storage element” in the present disclosure.
- the tunnel barrier layer T corresponds to a specific example of the "tunnel barrier film” in the present disclosure.
- the transistor TRC corresponds to a specific example of the "first transistor” and the “third transistor” in the present disclosure.
- the transistor TRA corresponds to a specific example of the "second transistor” in the present disclosure.
- Node N1 corresponds to a specific example of the "first node” in the present disclosure.
- Node N2 corresponds to a specific example of the "second node” in the present disclosure.
- the word line drive unit 21 and the read / write unit IO correspond to a specific example of the “drive unit” in the present disclosure.
- the word line WL corresponds to a specific example of the "first control line” in the present disclosure.
- the bit line BL corresponds to a specific example of the "second control line” and the “third control line” in the present disclosure.
- the voltage line VL corresponds to a specific example of the "fourth control line” in the present disclosure.
- the source line SL corresponds to a specific example of the "fifth control line” and the “sixth control line” in the present disclosure.
- the memory circuit 12 corresponds to a specific example of the “memory circuit” in the present disclosure.
- the processing circuit 11 corresponds to a specific example of the "processing circuit” in the present disclosure.
- the control unit 22 of the memory circuit 20 is word-line driven so as to write information to the memory cells MC of the plurality of memory cell arrays MA based on the write command and the write data supplied from the processing circuit 11 (FIG. 1). Controls the operation of unit 21 and a plurality of read / write units IO.
- the word line driving unit 21 selects one of the plurality of word line WLs based on the instruction from the control unit 22.
- the column switch 31 selects one of the plurality of bit line BLs based on the instruction from the control unit 22, and connects the selected bit line BL to the voltage generation unit 32.
- the other bit lines BL are put into a floating state.
- the voltage generation unit 32 generates a ground voltage or a blow voltage applied to the selected bit line BL based on the instruction from the control unit 22.
- the drive unit 34 drives the voltage line VL based on the instruction from the control unit 22.
- the memory circuit 20 selects the memory cell MC in each of the plurality of memory cell array MAs by selecting the word line WL and the bit line BL, and generates a voltage in the selected memory cell MC.
- the voltage generated by the unit 32 is applied.
- the tunnel barrier layer T of the storage element M is destroyed, and the resistance state of the storage element M becomes the resistance state RS.
- the resistance state of the storage element M is maintained in the resistance state RL. In this way, the memory circuit 20 writes information to the selected memory cell MC.
- control unit 22 of the memory circuit 20 has a word line drive unit 21 and a plurality of read / write units so as to read information from the memory cells MC of the plurality of memory cell array MAs based on the read command supplied from the processing circuit 11.
- Control the operation of IO In this reading operation, the word line driving unit 21 selects one of the plurality of word line WLs based on the instruction from the control unit 22.
- the column switch 31 selects one of the plurality of bit line BLs based on the instruction from the control unit 22, and connects the selected bit line BL to the sense amplifier 33. At the same time, the other bit wires are floated.
- the sense amplifier 33 generates a read voltage Vread applied to the selected bit line BL based on the instruction from the control unit 22.
- the drive unit 34 drives the voltage line VL based on the instruction from the control unit 22.
- the sense amplifier 33 reads out the information stored in the memory cell MC based on the current flowing through the selected bit line BL.
- the memory circuit 20 selects the memory cell MC in each of the plurality of memory cell array MAs by selecting the word line WL and the bit line BL, and stores the memory cell MC in the selected memory cell MC. Read information.
- FIG. 5 shows an example of a writing operation in the memory circuit 20.
- the control unit 22 has a memory among a plurality of memory cells MC in each of the plurality of memory cell array MAs based on the write command and the write data supplied from the processing circuit 11 (FIG. 1).
- the operation of the word line drive unit 21 and the plurality of read / write units IO is controlled so as to select the cell MC (memory cell MC1).
- the column switch 31 selects the bit line BL related to the memory cell MC1 among the plurality of bit line BLs based on the instruction from the control unit 22, and uses the selected bit line BL as the voltage generation unit 32. Connect to. In FIG. 5, the selected bit line BL is shown by a thick line.
- the voltage generation unit 32 generates a blow voltage in this example based on the instruction from the control unit 22. In this example, the blow voltage is 1.1V.
- the blow current I blow flows from the voltage generation unit 32 to the memory cell MC1 via the bit line BL.
- the blow current Iblow flows in the order of the bit line BL, the storage element M, the transistor TRC, and the source line SL.
- the blow voltage (1.1V) applied to the bit line BL is divided by the resistance value of the storage element M and the on-resistance of the transistor TRC, and a voltage is generated at the node N1. Since 1.1V is applied to the drain of the transistor TRA (transistor TRA1) associated with the memory cell MC1, the voltage of the source of this transistor TRA1 becomes higher than 0V. As a result, the voltage of the back gate of the transistor TRC of the memory cell MC1 becomes high, so that the on-resistance of the transistor TRC becomes low. When the on-resistance of the transistor TRC is lowered in this way, the blow current I blow becomes easier to flow. As a result, the tunnel barrier layer T of the storage element M is destroyed, the resistance state of the storage element M becomes the resistance state RS, and information is stored in the memory cell MC1.
- the voltage generation unit 32 generates a blow voltage based on the instruction from the control unit 22, but when the ground voltage is generated, the read / write unit IO causes the voltage VBL of the selected bit line BL. To 0V. In this case, since the blow current I blow does not flow through the memory cell MC1, the tunnel barrier layer T of the memory element M is not destroyed. Therefore, the resistance state of the storage element M is maintained in the resistance state RL.
- the 32 read / write unit IO writes 32-bit data to the 32 memory cell MCs in the 32 memory cell arrays MA.
- FIG. 6 shows an example of the read operation in the memory circuit 20.
- the control unit 22 has a memory cell MC (memory cell) among a plurality of memory cell MCs in each of the plurality of memory cell array MAs based on the read command supplied from the processing circuit 11 (FIG. 1).
- the operation of the word line drive unit 21 and the plurality of read / write units IO is controlled so as to select MC2).
- the column switch 31 selects the bit line BL related to the memory cell MC1 among the plurality of bit line BLs based on the instruction from the control unit 22, and uses the selected bit line BL as the sense amplifier 33. Connecting.
- the sense amplifier 33 generates a read voltage Vread based on an instruction from the control unit 22.
- the read / write unit IO puts a bit line BL other than the selected bit line BL among the plurality of bit line BLs in a floating state.
- the read current I read flows from the sense amplifier 33 to the memory cell MC2 via the bit line BL.
- the read current I read flows in the order of the bit line BL, the storage element M, the transistor TRC, and the source line SL.
- the read voltage Vread applied to the bit line BL is divided by the resistance value of the storage element M and the on-resistance of the transistor TRC, and a voltage is generated at the node N1. Since 1.1V is applied to the drain of the transistor TRA (transistor TRA2) associated with the memory cell MC2, the voltage of the source of the transistor TRA2 becomes higher than 0V. As a result, the voltage of the back gate of the transistor TRC of the memory cell MC2 becomes high, and the on-resistance of this transistor TRC becomes low. When the on-resistance of the transistor TRC is lowered in this way, the read current I read more reflects the resistance state of the storage element M.
- the sense amplifier 33 reads the information stored in the memory cell MC2 by determining whether the resistance state of the storage element M is the resistance state RL or the resistance state RS based on the read current I read.
- the 32 read / write unit IOs read 32-bit data from the 32 memory cells MC in the 32 memory cell array MAs.
- the transistor TRA is provided, the gate of the transistor TRA is connected to the other end of the storage element M and the drain of the transistor TRC, and the source of the transistor TRA is connected to the back gate of the transistor TRC. did.
- the voltage of the back gate of the transistor TRC can be controlled, and as a result, the on-resistance of the transistor TRC can be lowered.
- the blow current I blow can be made easier to flow in the writing operation, so that the tunnel barrier layer T of the storage element M can be easily destroyed. ..
- the so-called blow margin can be widened.
- the storage element M when the resistance value of the storage element M in the resistance state RL is low, the storage element M is less likely to be destroyed.
- the semiconductor circuit 1 when the resistance value in the resistance state RL of the storage element M is low, the voltage of the node N1 can be high. In this case, the voltage at the gate of the transistor TRA becomes high, and the voltage at the back gate of the transistor TRC becomes high, so that the on-resistance of the transistor TRC can be lowered. As a result, the blow current I blow can be made easier to flow, so that the tunnel barrier layer T of the storage element M can be easily destroyed.
- the size of the transistor TRC can be reduced.
- the on-resistance of the transistor TRC is increased, so that the storage element M is less likely to be destroyed.
- the voltage of the node N1 may increase as the on-resistance of the transistor TRC increases.
- the voltage of the back gate of the transistor TRC becomes high, so that the on-resistance of the transistor TRC can be lowered and the storage element M can be easily destroyed.
- the size of the transistor TRC can be reduced, so that the size of the memory cell MC can be reduced.
- the blow voltage can be lowered, for example, in the writing operation. That is, for example, when the on-resistance of the transistor TRC is high, a high blow voltage may be used in order to more reliably destroy the storage element M. In this case, for example, since a high voltage is applied to the transistor TRC, the reliability of the transistor TRC may decrease. On the other hand, in the semiconductor circuit 1, since the blow voltage can be lowered, the possibility that the reliability of the transistor TRC is lowered can be reduced. Further, in the semiconductor circuit 1, since it is not necessary to provide a charge pump circuit or the like that generates a high blow voltage, the size of the memory circuit 20 can be reduced.
- the read current Iread more reflects the resistance state in the storage element M.
- the so-called read margin can be widened.
- the semiconductor circuit 1 since one transistor TRA is provided for a plurality of memory cell MCs for one row, as compared with the case where one transistor TRA is provided for one memory cell MC, for example, Since the number of elements can be suppressed, the size of the memory circuit 20 can be reduced.
- the semiconductor circuit 1 since a plurality of transistor TRCs in a plurality of memory cell MCs for one row are formed in one P well, for example, compared with a case where these plurality of transistor TRCs are formed in a plurality of P wells, respectively. Therefore, the size of the memory circuit 20 can be reduced.
- the memory circuit 20 is configured by using the storage element M having the same configuration as the storage element M of the memory circuit 12.
- the memory circuit 12 in which the information can be rewritten and the memory circuit 20 in which the information can be written once can be formed in the same manufacturing process, so that the manufacturing can be performed by a simple method. The cost can be reduced.
- the transistor TRA is provided, the gate of the transistor TRA is connected to the other end of the storage element and the drain of the transistor TRC, and the source of the transistor TRA is connected to the back gate of the transistor TRC. Therefore, the on-resistance of the transistor TRC can be lowered. Thereby, for example, the size of the memory cell can be reduced, the risk of deterioration of reliability can be reduced, the blow margin can be widened, and the read margin can be widened.
- the drive unit 34 sets the voltage VVL of the voltage line VL to 1.1 V, but the present invention is not limited to this, and instead of this.
- the voltage VVL of the voltage line VL may be set to 0V.
- one source line SL is provided for a plurality of memory cell MCs for one row, but the present invention is not limited to this, and instead, for example, the memory shown in FIG. 7 is provided.
- one source line SL may be provided for a plurality of memory cell MCs for two rows.
- a plurality of memory cell MCs in the first row and a plurality of memory cell MCs in the second row are connected to one source line SL.
- the plurality of memory cell MCs in the third row and the plurality of memory cell MCs in the fourth row are connected to one source line SL. The same applies to the fifth and subsequent columns.
- 1-bit information is stored in one memory cell MC, but the present invention is not limited to this, and 1-bit information may be stored in two memory cell MCs.
- the semiconductor circuit 1C according to this modification will be described in detail below.
- the semiconductor circuit 1C includes a memory circuit 40.
- FIG. 8 shows a configuration example of the memory cell array MA and the read / write unit IO related to the memory circuit 40.
- the memory cell array MA two memory cell MCs connected to the same word line WL form a memory cell pair MCP.
- the memory cell MC in the first column and the memory cell MC in the second column form a memory cell pair MCP
- the memory cell MC in the third column and the memory cell MC in the fourth column form a memory cell pair MCP.
- the two bit line BLs form a bit line pair BLP.
- the first bit line BL and the second bit line BL form a bit line pair BLP
- the third bit line BL and the fourth bit line BL form a bit line pair BLP. The same applies to the fifth and subsequent items.
- the resistance state of the storage element M of the left memory cell MC in the memory cell pair MCP is different from the resistance state of the storage element of the right memory cell MC after the writing operation is performed. Specifically, when the resistance state of the storage element M in the left memory cell MC is the resistance state RS, the resistance state of the storage element M in the right memory cell MC is the resistance state RL, and the left memory cell. When the resistance state of the storage element M in the MC is the resistance state RL, the resistance state of the storage element M in the memory cell MC on the right side is the resistance state RS. In this way, the memory cell pair MCP stores one bit of information.
- the read / write unit IO has a column switch 41, a voltage generation unit 42, and a sense amplifier 43.
- the column switch 41 selects one of the plurality of bit line pair BLPs based on the instruction from the control unit 22, and connects the selected bit line pair BLP to the voltage generation unit 42. , Each bit line BL of the other bit line pair BLP is configured to be in a floating state. Further, in the read operation, the column switch 41 selects one of the plurality of bit line pair BLPs based on the instruction from the control unit 22, and connects the selected bit line pair BLP to the sense amplifier 43. , Each bit line BL of the other bit line pair BLP is configured to be in a floating state.
- the voltage generation unit 42 is configured to generate a ground voltage and a blow voltage applied to each bit line BL of the selected bit line pair BLP based on an instruction from the control unit 22 in the writing operation. ..
- the sense amplifier 43 In the read operation, the sense amplifier 43 generates a read voltage Vread applied to each bit line BL of the selected bit line pair BLP based on the instruction from the control unit 22, and also generates a read voltage Vread and selects the selected bit line pair BLP.
- the information stored in the memory cell pair MCP is read out based on the current flowing through each bit line BL of the above.
- FIG. 9 shows an example of a writing operation in the memory circuit 40.
- the control unit 22 has a memory cell pair MCP among a plurality of memory cell pair MCPs in each of the plurality of memory cell array MAs based on the write command and the write data supplied from the processing circuit 11.
- the operation of the word line drive unit 21 and the plurality of read / write units IO is controlled so as to select (memory cell pair MCP1).
- the column switch 41 selects the bit line pair BLP related to the memory cell pair MCP1 among the plurality of bit line pair BLPs based on the instruction from the control unit 22, and of the selected bit line pair BLP.
- the two bit wires BL are connected to the voltage generation unit 42.
- the voltage generation unit 42 generates a ground voltage (0V) and a blow voltage (1.1V in this example) based on the instruction from the control unit 22.
- the blow current I blow flows from the voltage generation unit 42 to the left memory cell MC (memory cell MC3) in the memory cell pair MCP1 via the left bit line BL in the selected bit line pair BLP.
- the blow current Iblow flows in the order of the bit line BL, the storage element M, the transistor TRC, and the source line SL. Since the transistor TRA (transistor TRA3) associated with the memory cell pair MCP1 raises the voltage of the back gate of the transistor TRC of the memory cell MC3, the on-resistance of the transistor TRC becomes low and the blow current Iblow flows more easily. Become.
- the resistance state of the storage element M of the memory cell MC3 becomes the resistance state RS.
- the blow current Iblow does not flow through the memory cell MC (memory cell MC4) on the right side of the memory cell pair MCP1
- the tunnel barrier layer T of the storage element M is not destroyed. Therefore, the resistance state of the storage element M of the memory cell MC4 is maintained in the resistance state RL. In this way, information is stored in the memory cell pair MCP1.
- VBL 0V
- VBL 0V
- VBL 1.1V
- the resistance state of the storage element M of the memory cell MC4 becomes the resistance state RS, and the resistance state of the storage element M of the memory cell MC3 is maintained in the resistance state RL.
- the 32 read / write unit IOs write 32-bit data to the 32 memory cell pair MCPs in the 32 memory cell array MAs.
- FIG. 10 shows an example of a read operation in the memory circuit 40.
- the control unit 22 has a memory cell pair MCP (memory cell pair MCP2) among a plurality of memory cell pair MCPs in each of the plurality of memory cell array MAs based on the read command supplied from the processing circuit 11. ) Is selected, the operation of the word line drive unit 21 and the plurality of read / write units IO is controlled.
- MCP memory cell pair MCP2
- Is selected the operation of the word line drive unit 21 and the plurality of read / write units IO is controlled.
- the column switch 41 selects the bit line pair BLP related to the memory cell pair MCP2 among the plurality of bit line pair BLPs based on the instruction from the control unit 22, and of the selected bit line pair BLP. Connect the two bit lines BL to the sense amplifier 43.
- the sense amplifier 43 generates a read voltage Vread based on an instruction from the control unit 22.
- the read / write unit IO puts the bit line BLs other than the bit line BL of the selected bit line pair BLP among the plurality of bit line BLs into a floating state.
- the read current Iread5 flows from the sense amplifier 43 to the left memory cell MC (memory cell MC5) in the memory cell pair MCP2 via the left bit line BL in the selected bit line pair BLP, and on the right side.
- a read current Iread6 flows through the memory cell MC (memory cell MC6) on the right side of the memory cell pair MCP2 via the bit line BL. Since the transistor TRA (transistor TRA4) associated with the memory cell pair MCP2 raises the voltage of the back gate of the transistor TRC of the memory cells MC5 and MC6, the on-resistance of the transistor TRC of the memory cells MC5 and MC6 becomes low. ..
- the read current Iread5 more reflects the resistance state in the storage element M of the memory cell MC5
- the read current Iread6 more reflects the resistance state in the storage element M of the memory cell MC6.
- the sense amplifier 33 determines, for example, which of the resistance value of the storage element M of the memory cell MC5 and the resistance value of the storage element M of the memory cell MC6 is larger. Read the information stored in the memory cell pair MCP2.
- the 32 read / write unit IOs read 32-bit data from the 32 memory cell pair MCPs in the 32 memory cell array MAs.
- the present modification has been applied to the memory circuit 20 (FIG. 3) according to the above embodiment, but the present invention is not limited to this, and for example, as shown in FIG. 11, the memory circuit 20A according to the modification 2 This modified example may be applied to FIG. 7 (FIG. 7).
- the source line SL is grounded, but the present invention is not limited to this, and the source line SL may be selectively driven.
- the semiconductor circuit 1D according to this modification will be described in detail below.
- the semiconductor circuit 1D includes a memory circuit 50.
- FIG. 12 shows a configuration example of the memory circuit 50.
- the memory circuit 50 includes a plurality of memory cell arrays MA (32 memory cell array MA [0], MA [1], ..., MA [31] in this example) and a plurality of read / write unit IOs (32 in this example).
- the plurality of source line drive units DRV are provided corresponding to each of the plurality of memory cell array MAs.
- FIG. 13 shows a configuration example of the source line drive unit DRV.
- the source line driving unit DRV is configured to drive a plurality of source line SLs based on an instruction from the control unit 52.
- the source line drive unit DRV has a column switch 61 and a voltage generation unit 62.
- the column switch 61 selects one of the plurality of source line SLs based on the instruction from the control unit 52 in the write operation and the read operation, and connects the selected source line SL to the voltage generation unit 62. At the same time, the other source lines SL are configured to be in a floating state.
- the column switches 61 of the plurality of source line drive units DRV are adapted to select the same source line SL from each other based on the instruction from the control unit 52.
- the voltage generation unit 62 is configured to generate a ground voltage applied to the selected source line SL based on an instruction from the control unit 52 in the write operation and the read operation.
- the control unit 52 (FIG. 12) has a word line drive unit 21, a plurality of, so as to write information to the memory cells MC of the plurality of memory cell array MAs based on the write command and the write data supplied from the processing circuit 11. It is configured to control the operation of the source line drive unit DRV and a plurality of read / write units IO. Further, the control unit 52 reads the information from the memory cells MC of the plurality of memory cell array MAs based on the read command supplied from the processing circuit 11, so that the word line drive unit 21, the plurality of source line drive units DRV, And it is designed to control the operation of multiple read / write unit IOs.
- FIG. 14 shows an example of a writing operation in the memory circuit 50.
- the control unit 52 has a memory among a plurality of memory cells MC in each of the plurality of memory cell array MAs based on the write command and the write data supplied from the processing circuit 11 (FIG. 1).
- the operation of the word line drive unit 21, the plurality of source line drive units DRV, and the plurality of read / write units IO is controlled so as to select the cell MC (memory cell MC7).
- the column switch 61 selects the source line SL related to the memory cell MC7 among the plurality of source line SLs based on the instruction from the control unit 52, and generates a voltage for the selected source line SL.
- the selected source line SL is shown by a thick line.
- the voltage generation unit 62 generates a ground voltage in this example based on the instruction from the control unit 52.
- the column switch 31 selects the bit line BL related to the memory cell MC7 among the plurality of bit line BLs based on the instruction from the control unit 52, and uses the selected bit line BL as the voltage generation unit 32. Connect to.
- the voltage generation unit 32 generates a blow voltage (1.1 V in this example) in this example based on an instruction from the control unit 52.
- the read / write unit IO puts a bit line BL other than the selected bit line BL among the plurality of bit line BLs in a floating state.
- the blow current I blow flows from the voltage generation unit 32 to the memory cell MC1 via the bit line BL.
- the blow current Iblow flows in the order of the bit line BL, the storage element M, the transistor TRC, and the source line SL. Since the transistor TRA (transistor TRA7) associated with the memory cell MC7 raises the voltage of the back gate of the transistor TRC of the memory cell MC7, the on-resistance of the transistor TRC becomes low and the blow current I blow becomes easier to flow. .. As a result, the resistance state of the storage element M of the memory cell MC7 becomes the resistance state RS.
- FIG. 15 shows an example of the read operation in the memory circuit 50.
- the control unit 52 selects a certain memory cell MC (memory cell MC8) among the plurality of memory cell MCs in each of the plurality of memory cell array MAs based on the read command supplied from the processing circuit 11.
- the operation of the word line drive unit 21, the plurality of source line drive units DRV, and the plurality of read / write units IO is controlled so as to be performed.
- the column switch 61 selects the source line SL related to the memory cell MC8 among the plurality of source line SLs based on the instruction from the control unit 52, and generates a voltage for the selected source line SL.
- the voltage generation unit 62 generates a ground voltage in this example based on the instruction from the control unit 52.
- the column switch 31 selects the bit line BL related to the memory cell MC8 among the plurality of bit line BLs based on the instruction from the control unit 52, and uses the selected bit line BL as the sense amplifier 33. Connecting.
- the sense amplifier 33 generates a read voltage Vread based on an instruction from the control unit 52.
- the read / write unit IO puts a bit line BL other than the selected bit line BL among the plurality of bit line BLs in a floating state.
- the read current I read flows from the sense amplifier 33 to the memory cell MC8 via the bit line BL.
- the read current I read flows in the order of the bit line BL, the storage element M, the transistor TRC, and the source line SL. Since the transistor TRA (transistor TRA8) associated with the memory cell MC8 raises the voltage of the back gate of the transistor TRC of the memory cell MC8, the on-resistance of the transistor TRC becomes low. As a result, the read current I read more reflects the resistance state in the storage element M of the memory cell MC8.
- the sense amplifier 33 reads out the information stored in the memory cell MC8 by determining whether the resistance state of the storage element M is the resistance state RL or the resistance state RS based on the read current I read.
- the present modification is applied to the memory circuit 20 (FIG. 3) according to the above embodiment, but the present invention is not limited to this, and for example, as shown in FIG. 16, the memory circuit 20A according to the modification 2 This modified example may be applied to FIG. 7 (FIG. 7).
- the source line drive unit DRV has a column switch 71.
- the column switch 71 selects one of the plurality of source line SLs based on the instruction from the control unit 52 in the write operation and the read operation, and connects the selected source line SL to the voltage generation unit 62.
- the other source lines SL are configured to be in a floating state.
- FIG. 17 shows the appearance of a smartphone to which the semiconductor circuit of the above embodiment is applied.
- This smartphone has, for example, a main body unit 310 and a display unit 320.
- the semiconductor circuit according to the above embodiment can be applied to electronic devices in all fields such as digital cameras, notebook personal computers, portable game machines, and video cameras, in addition to such smartphones.
- the transistors TRC and TRA are configured by using N-type MOS transistors, but the present invention is not limited to this, and instead, for example, a P-type MOS transistor is used. It may be configured.
- this technology can have the following configuration. According to the present technology having the following configuration, the size of the memory cell can be reduced.
- a first storage element having a first terminal, a second terminal connected to a first node, and a tunnel barrier film, and capable of storing information by destroying the tunnel barrier film.
- a first transistor having a connected drain of the first node, a source, a gate, and a back gate connected to the second node.
- a semiconductor circuit comprising a drain, a source connected to the second node, and a second transistor having a gate connected to the first node.
- a reference voltage is applied to the source of the first transistor, a first voltage different from the reference voltage is applied to the gate of the first transistor, and the first of the first storage elements.
- the first storage element By applying a second voltage different from the reference voltage to the terminal 1 and applying a third voltage different from the reference voltage to the drain of the second transistor, the first storage element is charged.
- the semiconductor circuit according to (1) above further comprising a drive unit capable of performing a first operation for storing information.
- the drive unit further applies the reference voltage to the source of the first transistor, applies the first voltage to the gate of the first transistor, and applies the first voltage to the first storage element.
- the second operation of reading information from the first storage element can be performed by applying a fourth voltage different from the reference voltage to the first terminal of the above (2).
- Semiconductor circuit (4) The semiconductor circuit according to (3), wherein the difference voltage between the fourth voltage and the reference voltage is lower than the difference voltage between the second voltage and the reference voltage.
- a second storage having a first terminal, a second terminal connected to the first node, and a tunnel barrier film, and information can be stored by destroying the tunnel barrier film.
- a third transistor having a drain connected to the first node, a source, a gate, and a back gate connected to the second node.
- a fifth control line connected to the source of the first transistor and A reference voltage is applied to the fifth control line, a first voltage different from the reference voltage is applied to the first control line, and a second control line different from the reference voltage is applied to the second control line.
- a voltage is applied to make the third control line float, and a third voltage different from the reference voltage is applied to the fourth control line to store information in the first storage element.
- the tunnel barrier film is made of a material containing MgO or alumina.
- a first storage element having a first terminal, a second terminal connected to a first node, and a tunnel barrier film, and capable of storing information by destroying the tunnel barrier film.
- a first transistor having a connected drain of the first node, a source, a gate, and a back gate connected to the second node.
- a second transistor having a drain, a source connected to the second node, and a gate connected to the first node.
- An electronic device including a processing circuit capable of performing processing based on the information stored in the first storage element.
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Abstract
Description
1.実施の形態
2.適用例
[構成例]
図1は、一実施の形態に係る半導体回路(半導体回路1)の一構成例を表すものである。半導体回路1は、記憶された情報に基づいて動作可能なものである。半導体回路1は、この例では1つの半導体チップに形成されている。半導体回路1は、処理回路11と、メモリ回路12と、メモリ回路20とを備えている。
続いて、本実施の形態の半導体回路1の動作および作用について説明する。
まず、図1~3を参照して、半導体回路1の全体動作概要を説明する。
図5は、メモリ回路20における書込動作の一例を表すものである。この例では、制御部22は、処理回路11(図1)から供給された書込コマンドおよび書込データに基づいて、複数のメモリセルアレイMAのそれぞれにおいて、複数のメモリセルMCのうちのあるメモリセルMC(メモリセルMC1)を選択するように、ワード線駆動部21および複数の読み書き部IOの動作を制御する。
以上のように本実施の形態では、トランジスタTRAを設け、トランジスタTRAのゲートを記憶素子の他端およびトランジスタTRCのドレインに接続し、トランジスタTRAのソースをそのトランジスタTRCのバックゲートに接続するようにしたので、トランジスタTRCのオン抵抗を低くすることができる。これにより、例えば、メモリセルのサイズを小さくすることができ、信頼性が低下するおそれを低減することができ、ブローマージンを広げることができ、リードマージンを広げることができる。
上記実施の形態では、読出動作において、図6に示したように、駆動部34は、電圧線VLの電圧VVLを1.1Vにしたが、これに限定されるものではなく、これに代えて、例えば、電圧線VLの電圧VVLを0Vにしてもよい。
上記実施の形態では、1列分の複数のメモリセルMCに対して1本のソース線SLを設けたが、これに限定されるものではなく、これに代えて、例えば、図7に示すメモリ回路20Aのように、2列分の複数のメモリセルMCに対して1本のソース線SLを設けてもよい。この例では、1列目の複数のメモリセルMCおよび2列目の複数のメモリセルMCが、1本のソース線SLに接続される。また、3列目の複数のメモリセルMCおよび4列目の複数のメモリセルMCが、1本のソース線SLに接続される。5列目以降についても同様である。
上記実施の形態では、1つのメモリセルMCに1ビットの情報を記憶したが、これに限定されるものではなく、2つのメモリセルMCに1ビットの情報を記憶してもよい。以下に、この変形例に係る半導体回路1Cについて詳細に説明する。半導体回路1Cは、メモリ回路40を備えている。
上記実施の形態では、ソース線SLを接地したが、これに限定されるものではなく、ソース線SLを選択的に駆動するようにしてもよい。以下に、この変形例に係る半導体回路1Dについて詳細に説明する。半導体回路1Dは、メモリ回路50を備えている。
また、これらの変形例のうちの2以上を組み合わせてもよい。
次に、上記実施の形態および変形例で説明した技術の電子機器への適用例について説明する。
前記第1のノードの接続されたドレインと、ソースと、ゲートと、第2のノードに接続されたバックゲートとを有する第1のトランジスタと、
ドレインと、前記第2のノードに接続されたソースと、前記第1のノードに接続されたゲートとを有する第2のトランジスタと
を備えた半導体回路。
(2)前記第1のトランジスタの前記ソースに基準電圧を印加し、前記第1のトランジスタの前記ゲートに前記基準電圧とは異なる第1の電圧を印加し、前記第1の記憶素子の前記第1の端子に前記基準電圧とは異なる第2の電圧を印加し、前記第2のトランジスタの前記ドレインに前記基準電圧とは異なる第3の電圧を印加することにより、前記第1の記憶素子に情報を記憶させる第1の動作を行うことが可能な駆動部をさらに備えた
前記(1)に記載の半導体回路。
(3)前記駆動部は、さらに、前記第1のトランジスタの前記ソースに前記基準電圧を印加し、前記第1のトランジスタの前記ゲートに前記第1の電圧を印加し、前記第1の記憶素子の前記第1の端子に前記基準電圧とは異なる第4の電圧を印加することにより、前記第1の記憶素子から情報を読み出す第2の動作を行うことが可能である
前記(2)に記載の半導体回路。
(4)前記第4の電圧と前記基準電圧との差電圧は、前記第2の電圧と前記基準電圧との差電圧よりも低い
前記(3)に記載の半導体回路。
(5)前記駆動部は、前記第2の動作において、前記第2のトランジスタの前記ドレインに前記第3の電圧を印加可能である
前記(3)または(4)に記載の半導体回路。
(6)前記駆動部は、前記第2の動作において、前記第2のトランジスタの前記ドレインに前記基準電圧を印加することが可能である
前記(3)または(4)に記載の半導体回路。
(7)第1の端子と、前記第1のノードに接続された第2の端子と、トンネルバリア膜とを有し、前記トンネルバリア膜を破壊することにより情報を記憶可能な第2の記憶素子と、
前記第1のノードに接続されたドレインと、ソースと、ゲートと、前記第2のノードに接続されたバックゲートとを有する第3のトランジスタと、
前記第1のトランジスタの前記ゲートおよび前記第3のトランジスタの前記ゲートに接続された第1の制御線と、
前記第1の記憶素子の前記第1の端子に接続された第2の制御線と、
前記第2の記憶素子の前記第1の端子に接続された第3の制御線と、
前記第2のトランジスタの前記ドレインに接続された第4の制御線と
をさらに備えた
前記(1)に記載の半導体回路。
(8)前記第1のトランジスタの前記ソースに接続された第5の制御線と、
前記第5の制御線に基準電圧を印加し、前記第1の制御線に前記基準電圧とは異なる第1の電圧を印加し、前記第2の制御線に前記基準電圧とは異なる第2の電圧を印加し、前記第3の制御線をフローティング状態にし、前記第4の制御線に前記基準電圧とは異なる第3の電圧を印加することにより、前記第1の記憶素子に情報を記憶させる第1の動作を行うことが可能な駆動部をさらに備えた
前記(7)に記載の半導体回路。
(9)前記第3のトランジスタの前記ソースに接続された第6の制御線をさらに備え、
前記駆動部は、前記第1の動作において、前記第6の制御線に前記基準電圧を印加可能である
前記(8)に記載の半導体回路。
(10)前記第3のトランジスタの前記ソースに接続された第6の制御線をさらに備え、
前記駆動部は、前記第1の動作において、前記第6の制御線をフローティング状態にすることが可能である
前記(8)に記載の半導体回路。
(11)前記第5の制御線は、さらに前記第3のトランジスタの前記ソースに接続された
前記(8)に記載の半導体回路。
(12)前記駆動部は、さらに、前記第5の制御線に前記基準電圧を印加し、前記第1の制御線に前記第1の電圧を印加し、前記第2の制御線に前記基準電圧とは異なる第4の電圧を印加し、前記第3の制御線をフローティング状態にすることにより、前記第1の記憶素子から情報を読み出す第2の動作を行うことが可能である
前記(8)から(11)のいずれかに記載の半導体回路。
(13)前記トンネルバリア膜は、MgOまたはアルミナを含む材料により構成された
請求項1に記載の半導体回路。
(14)トンネルバリア膜を有する磁気トンネル接合素子を含むメモリ回路をさらに備えた
前記(1)から(13)のいずれかに記載の半導体回路。
(15)第1の端子と、第1のノードに接続された第2の端子と、トンネルバリア膜とを有し、前記トンネルバリア膜を破壊することにより情報を記憶可能な第1の記憶素子と、
前記第1のノードの接続されたドレインと、ソースと、ゲートと、第2のノードに接続されたバックゲートとを有する第1のトランジスタと、
ドレインと、前記第2のノードに接続されたソースと、前記第1のノードに接続されたゲートとを有する第2のトランジスタと、
前記第1の記憶素子に記憶された情報に基づいて処理を行うことが可能な処理回路と
を備えた電子機器。
Claims (15)
- 第1の端子と、第1のノードに接続された第2の端子と、トンネルバリア膜とを有し、前記トンネルバリア膜を破壊することにより情報を記憶可能な第1の記憶素子と、
前記第1のノードの接続されたドレインと、ソースと、ゲートと、第2のノードに接続されたバックゲートとを有する第1のトランジスタと、
ドレインと、前記第2のノードに接続されたソースと、前記第1のノードに接続されたゲートとを有する第2のトランジスタと
を備えた半導体回路。 - 前記第1のトランジスタの前記ソースに基準電圧を印加し、前記第1のトランジスタの前記ゲートに前記基準電圧とは異なる第1の電圧を印加し、前記第1の記憶素子の前記第1の端子に前記基準電圧とは異なる第2の電圧を印加し、前記第2のトランジスタの前記ドレインに前記基準電圧とは異なる第3の電圧を印加することにより、前記第1の記憶素子に情報を記憶させる第1の動作を行うことが可能な駆動部をさらに備えた
請求項1に記載の半導体回路。 - 前記駆動部は、さらに、前記第1のトランジスタの前記ソースに前記基準電圧を印加し、前記第1のトランジスタの前記ゲートに前記第1の電圧を印加し、前記第1の記憶素子の前記第1の端子に前記基準電圧とは異なる第4の電圧を印加することにより、前記第1の記憶素子から情報を読み出す第2の動作を行うことが可能である
請求項2に記載の半導体回路。 - 前記第4の電圧と前記基準電圧との差電圧は、前記第2の電圧と前記基準電圧との差電圧よりも低い
請求項3に記載の半導体回路。 - 前記駆動部は、前記第2の動作において、前記第2のトランジスタの前記ドレインに前記第3の電圧を印加可能である
請求項3に記載の半導体回路。 - 前記駆動部は、前記第2の動作において、前記第2のトランジスタの前記ドレインに前記基準電圧を印加することが可能である
請求項3に記載の半導体回路。 - 第1の端子と、前記第1のノードに接続された第2の端子と、トンネルバリア膜とを有し、前記トンネルバリア膜を破壊することにより情報を記憶可能な第2の記憶素子と、
前記第1のノードに接続されたドレインと、ソースと、ゲートと、前記第2のノードに接続されたバックゲートとを有する第3のトランジスタと、
前記第1のトランジスタの前記ゲートおよび前記第3のトランジスタの前記ゲートに接続された第1の制御線と、
前記第1の記憶素子の前記第1の端子に接続された第2の制御線と、
前記第2の記憶素子の前記第1の端子に接続された第3の制御線と、
前記第2のトランジスタの前記ドレインに接続された第4の制御線と
をさらに備えた
請求項1に記載の半導体回路。 - 前記第1のトランジスタの前記ソースに接続された第5の制御線と、
前記第5の制御線に基準電圧を印加し、前記第1の制御線に前記基準電圧とは異なる第1の電圧を印加し、前記第2の制御線に前記基準電圧とは異なる第2の電圧を印加し、前記第3の制御線をフローティング状態にし、前記第4の制御線に前記基準電圧とは異なる第3の電圧を印加することにより、前記第1の記憶素子に情報を記憶させる第1の動作を行うことが可能な駆動部をさらに備えた
請求項7に記載の半導体回路。 - 前記第3のトランジスタの前記ソースに接続された第6の制御線をさらに備え、
前記駆動部は、前記第1の動作において、前記第6の制御線に前記基準電圧を印加可能である
請求項8に記載の半導体回路。 - 前記第3のトランジスタの前記ソースに接続された第6の制御線をさらに備え、
前記駆動部は、前記第1の動作において、前記第6の制御線をフローティング状態にすることが可能である
請求項8に記載の半導体回路。 - 前記第5の制御線は、さらに前記第3のトランジスタの前記ソースに接続された
請求項8に記載の半導体回路。 - 前記駆動部は、さらに、前記第5の制御線に前記基準電圧を印加し、前記第1の制御線に前記第1の電圧を印加し、前記第2の制御線に前記基準電圧とは異なる第4の電圧を印加し、前記第3の制御線をフローティング状態にすることにより、前記第1の記憶素子から情報を読み出す第2の動作を行うことが可能である
請求項8に記載の半導体回路。 - 前記トンネルバリア膜は、MgOまたはアルミナを含む材料により構成された
請求項1に記載の半導体回路。 - トンネルバリア膜を有する磁気トンネル接合素子を含むメモリ回路をさらに備えた
請求項1に記載の半導体回路。 - 第1の端子と、第1のノードに接続された第2の端子と、トンネルバリア膜とを有し、前記トンネルバリア膜を破壊することにより情報を記憶可能な第1の記憶素子と、
前記第1のノードの接続されたドレインと、ソースと、ゲートと、第2のノードに接続されたバックゲートとを有する第1のトランジスタと、
ドレインと、前記第2のノードに接続されたソースと、前記第1のノードに接続されたゲートとを有する第2のトランジスタと、
前記第1の記憶素子に記憶された情報に基づいて処理を行うことが可能な処理回路と
を備えた電子機器。
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| US17/431,201 US11744064B2 (en) | 2019-03-15 | 2020-02-18 | Semiconductor circuit and electronic apparatus |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011008861A (ja) * | 2009-06-25 | 2011-01-13 | Sony Corp | メモリ |
| JP2012174863A (ja) * | 2011-02-21 | 2012-09-10 | Sony Corp | 半導体装置およびその動作方法 |
| JP2012174864A (ja) * | 2011-02-21 | 2012-09-10 | Sony Corp | 半導体装置およびその動作方法 |
| JP2013537679A (ja) * | 2010-08-03 | 2013-10-03 | クアルコム,インコーポレイテッド | 第1の磁気トンネル接合構造および第2の磁気トンネル接合構造を有するビットセルにおける非可逆状態の生成 |
| JP2013232494A (ja) * | 2012-04-27 | 2013-11-14 | Sony Corp | 記憶素子、半導体装置およびその動作方法、ならびに電子機器 |
| US20140071741A1 (en) * | 2012-09-13 | 2014-03-13 | Qualcomm Incorporated | Otp cell with reversed mtj connection |
Family Cites Families (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006236511A (ja) * | 2005-02-25 | 2006-09-07 | Toshiba Corp | 半導体集積回路装置 |
| JP5076361B2 (ja) * | 2006-05-18 | 2012-11-21 | 株式会社日立製作所 | 半導体装置 |
| US8130534B2 (en) * | 2009-01-08 | 2012-03-06 | Qualcomm Incorporated | System and method to read and write data a magnetic tunnel junction element |
| JP2010225259A (ja) | 2009-02-27 | 2010-10-07 | Renesas Electronics Corp | 半導体装置 |
| JP5302157B2 (ja) * | 2009-10-05 | 2013-10-02 | ルネサスエレクトロニクス株式会社 | ワンタイム・プログラマブルセル回路及びこれを備える半導体集積回路 |
| US8638590B2 (en) * | 2010-09-28 | 2014-01-28 | Qualcomm Incorporated | Resistance based memory having two-diode access device |
| JP2012133836A (ja) * | 2010-12-20 | 2012-07-12 | Toshiba Corp | 抵抗変化型メモリ |
| KR20140067254A (ko) * | 2012-11-26 | 2014-06-05 | 삼성전자주식회사 | 메모리 시스템과 이의 동작 방법 |
| JP6381461B2 (ja) * | 2015-03-10 | 2018-08-29 | 東芝メモリ株式会社 | 不揮発性半導体メモリ |
| US9747966B2 (en) * | 2015-08-25 | 2017-08-29 | Toshiba Memory Corporation | Semiconductor memory device for sensing memory cell with variable resistance |
| DE112017001059T5 (de) * | 2016-02-29 | 2018-11-29 | Sony Corporation | Halbleiterschaltkreis, verfahren zur ansteuerung des halbleiterschaltkreises und elektronische vorrichtung |
| JP6753138B2 (ja) * | 2016-05-16 | 2020-09-09 | ソニー株式会社 | 半導体回路、駆動方法、および電子機器 |
| US10276783B2 (en) * | 2017-06-09 | 2019-04-30 | Sandisk Technologies Llc | Gate voltage controlled perpendicular spin orbit torque MRAM memory cell |
| JP6670807B2 (ja) | 2017-09-11 | 2020-03-25 | 本田技研工業株式会社 | 鞍乗り型車両 |
| CN111433852B (zh) * | 2017-12-12 | 2024-08-16 | 索尼半导体解决方案公司 | 半导体电路和半导体电路系统 |
| US10224087B1 (en) * | 2017-12-21 | 2019-03-05 | Qualcomm Technologies, Incorporated | Sensing voltage based on a supply voltage applied to magneto-resistive random access memory (MRAM) bit cells in an MRAM for tracking write operations to the MRAM bit cells |
-
2020
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- 2020-02-18 WO PCT/JP2020/006281 patent/WO2020189147A1/ja not_active Ceased
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011008861A (ja) * | 2009-06-25 | 2011-01-13 | Sony Corp | メモリ |
| JP2013537679A (ja) * | 2010-08-03 | 2013-10-03 | クアルコム,インコーポレイテッド | 第1の磁気トンネル接合構造および第2の磁気トンネル接合構造を有するビットセルにおける非可逆状態の生成 |
| JP2012174863A (ja) * | 2011-02-21 | 2012-09-10 | Sony Corp | 半導体装置およびその動作方法 |
| JP2012174864A (ja) * | 2011-02-21 | 2012-09-10 | Sony Corp | 半導体装置およびその動作方法 |
| JP2013232494A (ja) * | 2012-04-27 | 2013-11-14 | Sony Corp | 記憶素子、半導体装置およびその動作方法、ならびに電子機器 |
| US20140071741A1 (en) * | 2012-09-13 | 2014-03-13 | Qualcomm Incorporated | Otp cell with reversed mtj connection |
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| US11744064B2 (en) | 2023-08-29 |
| KR20210141473A (ko) | 2021-11-23 |
| DE112020001247T5 (de) | 2021-12-09 |
| CN113544780B (zh) | 2025-08-12 |
| CN113544780A (zh) | 2021-10-22 |
| US20220149055A1 (en) | 2022-05-12 |
| JP7420786B2 (ja) | 2024-01-23 |
| KR102677729B1 (ko) | 2024-06-25 |
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