CN105610427B - A kind of programmable logic cells based on and-or inverter structure - Google Patents
A kind of programmable logic cells based on and-or inverter structure Download PDFInfo
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- CN105610427B CN105610427B CN201510988404.0A CN201510988404A CN105610427B CN 105610427 B CN105610427 B CN 105610427B CN 201510988404 A CN201510988404 A CN 201510988404A CN 105610427 B CN105610427 B CN 105610427B
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K19/00—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits
- H03K19/02—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits using specified components
- H03K19/173—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits using specified components using elementary logic circuits as components
- H03K19/177—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits using specified components using elementary logic circuits as components arranged in matrix form
- H03K19/17724—Structural details of logic blocks
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K19/00—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits
- H03K19/02—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits using specified components
- H03K19/173—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits using specified components using elementary logic circuits as components
- H03K19/177—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits using specified components using elementary logic circuits as components arranged in matrix form
- H03K19/17736—Structural details of routing resources
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Abstract
The invention discloses a kind of programmable logic cells based on and-or inverter structure, it includes and-or inverter basic unit, and the and-or inverter basic unit realizes the function of the first input data and the second input data nand or nondisjunction under the control of the output control signal of SRAM memory cell；Wherein, the and-or inverter basic unit includes：Upper pull-up network pFET application of logic circuit module and pulldown network nFET application of logic circuit module；Upper pull-up network pFET application of logic circuit module includes at least one first at least one 5th pFET pipe, and the pulldown network nFET application of logic circuit module includes at least one first at least one 5th nFET pipe.The present invention is used as basic AIC units using may be programmed AND OR NOT gate (NANDOR), compared to non-wimble structure, the circuit series that signal is required through is few, area smaller, speed faster can realize that different function delay difference is smaller by adjusting pipe parameter.
Description
Technical field
The invention belongs to computer programmable logic technology fields, more particularly to one kind being based on and-or inverter (NANDOR) structure
Programmable logic cells.
Background technology
Programmable logic device is developed so far, it has also become the essential realization medium of digital circuit.Programming device spirit
The logic function that programmability living keeps its configurable realization different, meets the functional requirement of different user.With manufacture work
The performance of the progress of skill, programmable logic device is constantly promoted.In addition, programmable logic device also has shorter product development
Time.Above-mentioned advantage makes programmable logic device be widely used in different application field.
Programmable logic device mainly by programmed logical module (Configurable Logic Block, CLB) with can
Program interconnecting modules composition.CLB realizes the sub- logic function in application circuit, and programmable interconnecting modules connect each sub- logic
It connects to form complete application circuit logic function.
The programmable logic cells (Logic Element, LE) of the fpga chip of mainstream are usually by searching for table knot at present
Structure is realized, is as shown in Figure 1 a kind of realization method of the programmable logic cells 100 of typical 4 input look-up table configuration.It can compile
Journey logic unit LUT4 is made of 1 multiple selector MUX16S1 (16 select 1), 110 and 16 SRAM memory cells 121, wherein
Multiple selector MUX16S1 110 is made of 5 MUX4S1 (4 select 1) 120.Input terminal accesses signal, as storage unit SRAM
121 when being configured to different value, can realize different programmable functions.The programmable logic cells of this structure have powerful
Programmability, but the flexibility of its height also brings the performance costs such as corresponding area, time delay.Simultaneously because this can
Programmed logic cellular construction is only there are one output end, when the programmable functions of look-up table are there are when redundancy, can not be multiplexed configurable
Resource.
Therefore, the Hadi Parandeh et al. of Lausanne, SUI Polytechnics first proposed a kind of be based on and non-cone (And-
Inverter Cone, AIC) structure FPGA logic cell (United States Patent (USP) US 8,836,368B2).As shown in Fig. 2, with one
For 3 grades of AIC logic cones AIC3 200, AIC3 is by 4 bottom AIC units (Bottom AIC Element, EAE) 210 and 3
A basic AIC units (Basic AIC Element, BAE) 220 form.Wherein, basic AIC units 220 by one two input with
221, phase inverters 222 of NOT gate, 223, SRAM dispensing units 224 of two input selector form；Bottom AIC units
210 actually contain a basic AIC unit 220, and rest part circuit is anti-by two two input selectors 211, two
212, two SRAM dispensing units 213 of phase device form.One AIC3200 has 8 input terminal i0~i7, when storage unit SRAM matches
Be set to for different value when, AIC3 can realize different logic functions.AIC3 is exported since at least one second layer in example,
The operation result of at least one first level does not export.Due to any function by logical operation can rewrite as with it is non-
The combined expression of unit.It thus can will be in arbitrary Function Mapping to AIC composite structures.This logic unit has multi output
On the one hand the characteristics of multi input, disclosure satisfy that the calculation function of the wide input of multidigit, while can easily utilize the defeated of centre
Go out result and efficiently uses programmable resource.
The way of realization of wherein basic AIC unit Bs AE220 is usual as shown in 300 in Fig. 3, corresponding two input nand gate
221, a phase inverter 222, the circuit implementation such as 310 of two 223, SRAM dispensing units 224 of input selector,
320, shown in 330,340.Entire AIC unit Bs AE220 needs 12 transistors to realize.
It is this when being configured as nonidentity operation function based on the programmable logic cells with non-wimble structure, basic AIC units
There to be different Path selections, i.e., whether passes through phase inverter.Not by phase inverter, basic AIC units realize NAND gate
Function；Selection then realizes the function with door by phase inverter path, basic AIC units.It is configured with for two kinds on delay path
Different delay performances, this realizes that the temporal constraint in later stage brings inconvenience to application circuit.
Invention content
In view of this, the present invention proposes a kind of programmable logic cells based on and-or inverter wimble structure, i.e. use can compile
Journey AND OR NOT gate (NANDOR) bores unit as basic logic.
A kind of programmable logic cells based on and-or inverter structure proposed by the present invention comprising and-or inverter basic unit,
The and-or inverter basic unit realizes the first input data and second under the control of the output control signal of SRAM memory cell
The function of input data nand or nondisjunction, by multistage interconnected, it can be achieved that any logic function expresses formula；
Wherein, the and-or inverter basic unit includes：Upper pull-up network pFET application of logic circuit module and pulldown network nFET are patrolled
Collect circuit module；Upper pull-up network pFET application of logic circuit module includes that at least one first pFET at least one 5th pFET is managed；
The source electrode of at least one first pFET pipe and at least one 3rd pFET pipes connects power supply, and described at least one the
The drain electrode of one pFET pipes connects the source electrode of at least one 2nd pFET pipe and at least one 5th pFET pipes, at least one third
The drain electrode of pFET pipes connects the drain electrode of the source electrode and at least one 5th pFET pipes of at least one 4th pFET pipes, described
The ends drain signal line y of at least one 2nd pFET and at least one 4th pFET pipes；Described at least one first to
The grid of at least one 2nd pFET pipes of pFET connects the output control letter of first input data and SRAM memory cell respectively
One in number, it is defeated that the grid that at least one 3rd pFET at least one 4th pFET at least one is managed connects described second
Enter data, the grid of at least one 5th pFET pipes connects the inversion signal of the output control signal of the SRAM memory cell.
The circuit of the present invention realizes that required number of tubes is less than in the prior art and non-wimble structure, and area is better than Fig. 2
In with the basic AIC units of non-cone, speed is better than original structure, and when realizing different function, delay difference is smaller, and can be with
Delay when to realize different function by adjusting pipe parameter is identical.
Description of the drawings
Fig. 1 be in the prior art it is a kind of it is typical 4 input look-up table configuration programmable logic unit structure schematic diagram；
Fig. 2 is a kind of in the prior art is based on and the non-fpga logic list for boring (And-Inverter Cone, AIC) structure
Meta structure schematic diagram；
Fig. 3 is the reality being based in the prior art with basic AIC units in non-cone (And-Inverter Cone, AIC) structure
Existing structure chart；
Fig. 4 is the electricity that and-or inverter unit (NANDOR) passes through COMS standard compound logic doors in first embodiment in the present invention
Realize figure in road；
Fig. 5 is the electricity that and-or inverter unit (NANDOR) passes through COMS standard compound logic doors in second embodiment in the present invention
Realize figure in road；
Fig. 6 is the electricity that and-or inverter unit (NANDOR) passes through COMS standard compound logic doors in 3rd embodiment in the present invention
Realize figure in road；
Fig. 7 is the electricity that and-or inverter unit (NANDOR) passes through COMS standard compound logic doors in fourth embodiment in the present invention
Realize figure in road；
Fig. 8 is the electricity that and-or inverter unit (NANDOR) passes through COMS standard compound logic doors in the 5th embodiment in the present invention
Realize figure in road；
Fig. 9 is the electricity that and-or inverter unit (NANDOR) passes through COMS standard compound logic doors in sixth embodiment in the present invention
Realize figure in road.
Specific implementation mode
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with specific embodiment, and reference
Attached drawing, the present invention is described in further detail.
The present invention proposes a kind of programmable logic cells being based on and-or inverter (NANDOR) structure, for shown in alternate figures 3
300 AIC basic unit modules BAE.The basic functional principle of BAE is that it being capable of depositing by programming Control sram cell
Stored Value realizes the logic function of nand or "AND", is connected by framework multistage as shown in Figure 2, you can to realize complexity
Logic function.And according to Demogan theorems, any function can be rewritten by logical operation as the combination table with non-unit
Up to formula, therefore it can realize function by AIC structures.
Programmable and-or inverter unit (NANDOR) proposed by the present invention again may be by control SRAM memory cell, can
The unit module functional configuration is become nand or nondisjunction function, any patrol equally may be implemented by multistage interconnected
Collect functional representation.
And-or inverter unit (NANDOR) proposed by the present invention passes through the realization of COMS standard compound logic doors, entire and-or inverter list
First (NANDOR) module includes two parts：Upper pull-up network pFET application of logic circuit module and pulldown network nFET logic circuit moulds
Block.
A kind of programmable logic cells based on and-or inverter structure are proposed in first embodiment of the invention comprising with or
Non- basic unit, the and-or inverter basic unit realize the first input under the control of the output control signal of SRAM memory cell
The function of data and the second input data nand or nondisjunction, by multistage interconnected, it can be achieved that any logic function is expressed
Formula；
Wherein, the and-or inverter basic unit includes：Upper pull-up network pFET application of logic circuit module and pulldown network nFET are patrolled
Collect circuit module；The upper pull-up network pFET application of logic circuit module includes at least one first pFET pipes at least one 5th
PFET is managed；
The source electrode of at least one first pFET pipe and at least one 4th pFET pipes connects power supply, and described at least one the
The drain electrode of one pFET pipes connects the source electrode of at least one 2nd pFET pipes, the drain electrodes of at least one 4th pFET pipes connect it is described extremely
The source electrode of a few 5th pFET pipe, the drain electrode of at least one 2nd pFET connect the source of at least one 3rd pFET pipes
The drain electrode of pole, at least one 3rd pFET pipes and at least one 5th pFET pipes connects the ends signal wire y；Wherein, described
The drain interconnection or the described at least one 4th of at least one 4th pFET pipes drain electrode and at least one first pFET pipes
The drain interconnection of the drain electrode and at least one 2nd pFET pipes of pFET pipes, by the upper pull-up network pFET application of logic circuit module point
At upper and lower concatenated two parts；The grid of at least one first pFET pipes at least one 3rd pFET pipes connects described respectively
One in the output control signal of first input data and SRAM memory cell, at least one 4th pFET pipes are at least
The grid of one the 5th pFET pipe meets one in the output control signal of second input data and SRAM memory cell.
The pulldown network nFET application of logic circuit module includes at least one first nFET pipes at least one 5th nFET
Pipe；
The drain electrode of at least one first nFET pipe and at least one 4th nFET pipes connects the ends signal wire y, it is described at least
The source electrode of one the first nFET pipe connects the drain electrode of at least one 2nd nFET pipes, and the source electrode of at least one 4th nFET pipes connects
The source electrode of the drain electrode of at least one 5th nFET pipes, at least one 2nd nFET meets at least one 3rd nFET
The source electrode of the drain electrode of pipe, at least one 3rd nFET pipes and at least one 5th nFET pipes is grounded；Wherein, it is described extremely
Source electrode interconnection or described at least one fourth of few 4th nFET pipes source electrode at least one first nFET pipes
The source electrode of nFET pipes and the source electrode of at least one 2nd nFET pipes interconnect, by the pulldown network nFET application of logic circuit module point
At upper and lower concatenated two parts；The grid of at least one first nFET pipes at least one 3rd nFET pipes connects described respectively
One in the output control signal of first input data and SRAM memory cell, at least one 4th nFET pipes are at least
The grid of one the 5th nFET pipe meets one in the output control signal of second input data and SRAM memory cell.
Circuit structure shown in Fig. 4-Fig. 6 is being patrolled based on the programmable of and-or inverter structure for first embodiment of the invention proposition
Collect several exemplary circuit configuration schematic diagrames of unit.
As shown in figure 4, wherein pull-up pFET application of logic circuit module 410 is by 411,412,413,414,415 5 pFET
Pipe and a sram cell 416 form.Wherein, the source electrode of pipe 411 connects power supply, drain electrode join two pipes together 412 source electrode, grid by
Sram cell exportssControl；The source electrode of pipe 412 join two pipes together 411 drain electrode, drain electrode join two pipes together 413,415 source electrode, connect simultaneously
The drain electrode of pipe 414, grid are controlled by signal a；The source electrode of pipe 413 connects 412 drain electrode, and drain electrode connects the ends signal wire y, grid by
Signal a controls；414 source electrode of pipe connects power supply, drain electrode join two pipes together 415 source electrode, grid controls by signal b；415 source electrode of pipe connects
The drain electrode of pipe 412,414, drain electrode connect the ends signal wire y, and grid is controlled by sram cell output s.
When storage value is configured to high level 1 in sram cell 416, pFET pipes 411,415 end, pipe 413 and 414
Series connection, a and b signals control pipe 413 and 414 respectively, realize the pFET electrical road logic function of NOR operations；Work as sram cell
When storage value is configured to low level 0 in 416, pFET pipes 411,415 are connected, pipe 412 and 414 in parallel, a and b signals difference
Pipe 412 and 414,413 and 415 parallel connections are controlled, the two is connected again, realizes the pFET electrical road logic function of NAND operations.I.e.
Storage value in sram cell 416 determines the logic function on NANDOR pFET electricals road.
Equally, 420 modules in Fig. 4 are nFET application of logic circuit module, are managed by 421,422,423,424,425 5 nFET
Composition, it is symmetrical with pFET logic circuitry portions in Fig. 4.
Wherein, the drain electrode of pipe 421 connects the ends signal wire y, source electrode join two pipes together 422 drain electrode, grid exports s by sram cell
Control；The drain electrode of pipe 422 join two pipes together 421 source electrode, source electrode join two pipes together 423,425 drain electrode, while join two pipes together 424 source
Pole, grid are controlled by signal a；The drain electrode of pipe 423 connects 422 source electrode, source electrode ground connection, and grid is controlled by signal a；Pipe 424
Drain electrode pole connects the ends signal wire y, source electrode join two pipes together 425 drain electrode, grid controls by signal b；Pipe 425 drain pole join two pipes together 422,
424 source electrode, source electrode ground connection, grid are controlled by sram cell output s.It is mono- that its s signal comes from the shared SRAM of 410 modules
Member.
When storage value is configured to high level 1 in sram cell, nFET pipes 421,425 are connected, and pipe 422 and 424 is simultaneously
Connection, a and b signals control pipe 422 and 424,423 and 425 parallel connections respectively, and the two is connected again, realize the nFET electricity of NOR operations
Road logic function；When storage value is configured to low level 0 in sram cell, nFET pipes 421,425 end, pipe 423 and 424
Series connection, a and b signals control pipe 423 and 424 respectively, realize the nFET circuit logic functions of NAND operations.
Module 410, which is connected by y signal wires with module 420 and draws port from y signal wires, to be exported, you can with by configuring this
Complete NAND NOR logic functions may be implemented in sram cell.
Similar, the pFET logic circuits of NANDOR basic units can also pass through 610 modules in 510, Fig. 6 in Fig. 5 etc.
Shown circuit structure is realized.
Wherein, the s signals and a data connect on the first-the three pFET pipes in the module 410 shown in Fig. 4 is interchangeable, equally,
The s signals and a data connect on the first-the three nFET pipes in module 420 is interchangeable.
As shown in figure 5, the source electrode of pipe 511 connects power supply in 510 modules, drain electrode join two pipes together 512 source electrode, join two pipes together simultaneously
514 drain electrode, grid are controlled by signal a；The source electrode of pipe 512 join two pipes together 511,514 drain electrode, drain electrode join two pipes together 513 source
Pole, at the same join two pipes together 515 source electrode, grid controls by signal a；The source electrode of pipe 513 connects 512 drain electrode, and drain electrode meets signal wire y
End, grid are controlled by sram cell output s；514 source electrode of pipe connects power supply, drain electrode join two pipes together 512,515 source electrode, grid by
Sram cell exports s controls；515 source electrode of pipe join two pipes together 511,514 drain electrode, drain electrode connect the ends signal wire y, grid is by signal b
Control.
As shown in fig. 6, the source electrode of pipe 611 connects power supply in 610 modules, drain 612, source electrode of joining two pipes together, and takes over simultaneously
The drain electrode of son 614, grid are controlled by signal a；The source electrode of pipe 612 join two pipes together 611,614 drain electrode, while connect 615 source electrode,
Drain electrode join two pipes together 613 source electrode, grid by sram cell output s control；The source electrode of pipe 613 connects 612 drain electrode, and drain electrode connects letter
Number ends line y, grid are controlled by signal a；614 source electrode of pipe connects power supply, drain electrode join two pipes together 612,615 source electrode, grid is by SRAM
Unit exports s controls；615 source electrode of pipe join two pipes together 611,614 drain electrode, drain electrode connect the ends signal wire y, grid is controlled by signal b.
The nFET logic circuits of NANDOR basic units can also pass through circuit shown in 611 modules in 511, Fig. 6 in Fig. 5 etc.
Structure is realized.
As shown in figure 5, the drain electrode of pipe 521 connects the ends signal wire y in 520 modules, source electrode join two pipes together 522 drain electrode, simultaneously
Join two pipes together 524 source electrode, grid controls by signal a；The drain electrode of pipe 522 join two pipes together 521,524 source electrode, source electrode joins two pipes together
523 drain electrode, grid are controlled by signal a；The drain electrode of pipe 523 connects 522 source electrode, and source electrode is grounded, and grid is defeated by sram cell
Go out s controls；The drain electrode of pipe 524 connects the ends signal wire y, source electrode join two pipes together 522,525 drain electrode, while connect 521 source electrode, grid by
Sram cell exports s controls；Pipe 525 drain pole join two pipes together 521,524 source electrode, while join two pipes together 522 drain electrode, source electrode connects
Ground, grid are controlled by signal b.
As shown in fig. 6, the drain electrode of pipe 621 connects the ends signal wire y in 620 modules, source electrode join two pipes together 622 drain electrode, simultaneously
Join two pipes together 624 source electrode, grid controls by signal a；The drain electrode of pipe 622 join two pipes together 621,624 source electrode, source electrode joins two pipes together
623 drain electrode, grid are controlled by sram cell output s；The drain electrode of pipe 623 connects 622 source electrode, and source electrode ground connection, grid is by believing
Number a control；The drain electrode of pipe 624 connects the ends signal wire y, source electrode join two pipes together 622,625 drain electrode, while join two pipes together 621 source electrode, grid
Pole is by sram cell output s controls；Pipe 625 drain join two pipes together 621,624 source electrode, source electrode ground connection, grid controlled by signal b
System.
The logic of the logic function that above-mentioned Fig. 5 and circuit structure shown in Fig. 6 are realized and the structure shown in described Fig. 4
Function is identical, i.e., when s is high level 1, the upper pull-up network pFET application of logic circuit module realizes the pFET electrical of neither-NOR operation
Road logic function, the pulldown network nFET application of logic circuit module realize the nFET circuit logic functions of neither-NOR operation；When
When the output control signal of SRAM memory cell is low level, the upper pull-up network pFET application of logic circuit module realizes nand behaviour
The pFET electrical road logic function of work, the pulldown network nFET application of logic circuit module realize the nFET circuit logics of NAND operation
Function.
The above-mentioned programmable logic cells based on and-or inverter structure that the present invention also proposes can also pass through second embodiment
Second of circuit structure of middle proposition is realized.
Programmable logic cells based on and-or inverter structure disclosed in second embodiment of the invention comprising and-or inverter base
This unit, the and-or inverter basic unit realize the first input data under the control of the output control signal of SRAM memory cell
With the second input data nand or the function of nondisjunction, by multistage interconnected, it can be achieved that any logic function expresses formula；
Wherein, the and-or inverter basic unit includes：Upper pull-up network pFET application of logic circuit module and pulldown network nFET are patrolled
Collect circuit module；Upper pull-up network pFET application of logic circuit module includes that at least one first pFET at least one 5th pFET is managed；
The source electrode of at least one first pFET pipe and at least one 3rd pFET pipes connects power supply, and described at least one the
The drain electrode of one pFET pipes connects the source electrode of at least one 2nd pFET pipe and at least one 5th pFET pipes, at least one third
The drain electrode of pFET pipes connects the drain electrode of the source electrode and at least one 5th pFET pipes of at least one 4th pFET pipes, described
The ends drain signal line y of at least one 2nd pFET and at least one 4th pFET pipes；Described at least one first to
The grid of at least one 2nd pFET pipes of pFET connects the output control letter of first input data and SRAM memory cell respectively
One in number, it is defeated that the grid that at least one 3rd pFET at least one 4th pFET at least one is managed connects described second
Enter data, the grid of at least one 5th pFET pipes connects the inversion signal of the output control signal of the SRAM memory cell.
The pulldown network nFET application of logic circuit module includes that at least one first nFET at least one 5th nFET is managed；
The drain electrode of at least one first nFET pipe and at least one 3rd nFET pipes connects the ends signal wire y, it is described at least
The source electrode pole of one the first nFET pipe connects the drain electrode of at least one 2nd nFET pipe and at least one 5th nFET pipes, it is described at least
The source electrode of one the 3rd nFET pipe connects the drain electrode of at least one 4th nFET pipes and at least one 5th nFET pipes
The source electrode of source electrode, at least one 2nd nFET and at least one 4th nFET pipes is grounded；Described at least one first
Connect the output control signal of first input data and SRAM memory cell respectively to the grid of at least one 2nd nFET pipes
One of in, the grid that at least one at least one 3rd nFET at least one 4th nFET is managed connects described second
Input data, the grid of at least one 5th nFET pipes connect the inversion signal of the output control signal of the SRAM memory cell.
The typical of second of circuit structure that second embodiment of the invention proposes is realized as Figure 7-8, is situated between in detail below
It continues.
The pFET application of logic circuit module of NANDOR basic units can also be realized by 710 module shown in Fig. 7,710 by
711,712,713,714,715 5 pFET pipes, a sram cell 716 and an inverter modules composition.
716 output end s of sram cell is connected to inverter input, generates reversed output ns.
In 710 modules, 711 source electrode of pipe connects power supply, drain electrode join two pipes together 712,715 source electrode, grid controls by signal a；
712 source electrode of pipe join two pipes together 711 drain electrode, drain electrode connect the ends signal wire y, grid is controlled by signal s；713 source electrode of pipe connects power supply,
Drain electrode join two pipes together 714 source electrode and pipe 715 drain electrode, grid controls by signal s；714 source electrode of pipe connects 713 drain electrode, leakage
Pole connects the ends signal wire y, and grid is controlled by signal b；The grid of pipe 715 is controlled by signal ns.
When storage value is configured to high level 1 in sram cell 716, i.e., it is then low level 0 that s signal ends, which are 1, ns, pipe
Son 712,713 ends, and 715 conductings, a and b signals control pipe 711 and 714 respectively, and pipe 711 and 714 is connected, and NOR is realized
The pFET electrical road logic function of operation；When storage value is configured to low level 0 in sram cell 716, i.e., s signal ends are 0, ns
It is then low level 1, pipe 715 ends, 712 and 713 conductings, and pipe 711 and 714 parallel connections are controlled respectively by a and b signals, real
The pFET electrical road logic function of NAND operations is showed.
Equally, 720 modules in Fig. 7 are nFET application of logic circuit module, are managed by 721,722,723,724,725 5 nFET
Composition, it is symmetrical with pFET logic circuitry portions in Fig. 7.Wherein s signals are from the sram cell shared with 710 modules.
In 720 modules, the drain electrode of pipe 721 connects the ends signal y, source electrode join two pipes together 722,725 drain electrode, grid controlled by signal a
System；Pipe 722 drain join two pipes together 721 source electrode, source electrode ground connection, grid controls by signal s；The drain electrode of pipe 723 connects the ends signal y,
Source electrode join two pipes together 724 drain electrode and pipe 725 source electrode, grid controls by signal s；The drain electrode of pipe 724 connects 723 source electrode, source
Pole is grounded, and grid is controlled by signal b；The grid of pipe 725 is controlled by signal ns.
When storage value is configured to high level 1 in sram cell, s signal ends are that 1, ns is then low level 0.NFET is managed
722,723 conducting, 715 cut-offs, pipe 722 and 723 parallel connections, a and b signals control pipe 722 and 723 respectively, realize NOR behaviour
The nFET circuit logic functions of work；When storage value is configured to low level 0 in sram cell, s signal ends are that 0, ns is then low
Level 1.NFET pipes 722,723 end, and pipe 721 and 724 is connected, a and b signals control pipe 721 and 724, realize respectively
The nFET circuit logic functions of NAND operations.
Module 710, which is connected by y signal wires with module 720 and draws port from y signal wires, to be exported, you can with by configuring this
Complete NAND NOR logic functions may be implemented in sram cell.
Similar, pFET the and nPFET logic circuits of NANDOR basic units can also pass through shown in Fig. 8 810 and 820 moulds
Block circuit is realized.
In 810 modules, 811 source electrode of pipe connects power supply, drain electrode join two pipes together 812,815 source electrode, grid controls by signal a；
812 source electrode of pipe join two pipes together 811 drain electrode, drain electrode connect the ends signal wire y, grid is controlled by signal s；813 source electrode of pipe connects power supply,
Drain electrode join two pipes together 814 source electrode and pipe 815 drain electrode, grid controls by signal b；814 source electrode of pipe connects 813 drain electrode, leakage
Pole connects the ends signal wire y, and grid is controlled by signal b；The grid of pipe 815 is controlled by signal ns.
In 820 modules, the drain electrode of pipe 821 connects the ends signal y, source electrode join two pipes together 822,825 drain electrode, grid controlled by signal a
System；Pipe 822 drain join two pipes together 821 source electrode, source electrode ground connection, grid controls by signal s；The drain electrode of pipe 823 connects the ends signal y,
Source electrode join two pipes together 824 drain electrode and pipe 825 source electrode, grid controls by signal b；The drain electrode of pipe 824 connects 823 source electrode, source
Pole is grounded, and grid is controlled by signal b；The grid of pipe 825 is controlled by signal ns.
Wherein, the s signals and a data connect on the first-the two pFET pipes in the module 810 shown in Fig. 8 is interchangeable, equally,
The s signals and a data connect on the first-the two nFET pipes in module 820 is interchangeable.
Upper pull-up network pFET application of logic circuit module and pulldown network nFET application of logic circuit module can be arbitrary shown in Fig. 7-8
Combination constitutes NANDOR basic units.
The above-mentioned programmable logic cells based on and-or inverter structure that the present invention also proposes can also pass through 3rd embodiment
The third circuit structure of middle proposition is realized.
The programmable logic cells based on and-or inverter structure proposed in third embodiment of the invention comprising and-or inverter base
This unit, the and-or inverter basic unit realize the first input data under the control of the output control signal of SRAM memory cell
With the second input data nand or the function of nondisjunction, by multistage interconnected, it can be achieved that any logic function expresses formula；
Wherein, the and-or inverter basic unit includes：Upper pull-up network pFET application of logic circuit module and pulldown network nFET are patrolled
Collect circuit module；Upper pull-up network pFET application of logic circuit module includes at least one first pFET pipes at least one 6th pFET
Pipe；
The source electrode of at least one first pFET pipe and at least one 4th pFET pipes connects power supply, and described at least one the
The drain electrode of one pFET pipes connects the source electrode of at least one 2nd pFET pipes, the drain electrodes of at least one 4th pFET pipes connect it is described extremely
The source electrode of a few 5th pFET pipe, the drain electrode of at least one 2nd pFET connect the source of at least one 3rd pFET pipes
Pole, the drain electrodes of at least one 5th pFET pipes connect the source electrode of at least one 6th pFET pipes, and described at least one
Three pFET are managed and the drain electrode of at least one 6th pFET pipes connects the ends signal wire y；Wherein, at least one 4th pFET pipes
The drain electrode of drain electrode and the drain interconnection or at least one 4th pFET pipes of at least one first pFET pipes at least
The upper pull-up network pFET application of logic circuit module is divided into concatenated two up and down by the drain interconnection of one the 2nd pFET pipe
Point；The grid of at least one first pFET pipes at least one 3rd pFET pipes connect respectively first input data and
One in the output control signal of SRAM memory cell, at least one 4th pFET pipes at least one 6th pFET are managed
Grid meet one in the output control signal of second input data and SRAM memory cell.
The pulldown network nFET application of logic circuit module includes at least one first nFET pipes at least one 6th nFET
Pipe；
The drain electrode of at least one first nFET pipe and at least one 4th nFET pipes connects the ends signal wire y, it is described at least
The source electrode of one the first nFET pipe connects the drain electrode of at least one 2nd nFET pipes, and the source electrode of at least one 4th nFET pipes connects
The source electrode of the drain electrode of at least one 5th nFET pipes, at least one 2nd nFET meets at least one 3rd nFET
The drain electrode of pipe, the source electrodes of at least one 5th nFET pipes connect the drain electrode of at least one 6th nFET pipes, it is described at least
The source electrode of one the 3rd nFET pipe and at least one 6th nFET pipes connects the ends signal wire y；Wherein, the described at least one 4th
The source electrode of nFET pipes is connected with the source electrode of at least one 2nd nFET pipes, by the upper pull-up network pFET application of logic circuit module point
At upper and lower concatenated two parts；The grid of at least one first nFET pipes at least one 3rd nFET pipes connects described respectively
One in the output control signal of first input data and SRAM memory cell, at least one 4th nFET pipes are at least
The grid of one the 6th nFET pipe meets one in the output control signal of second input data and SRAM memory cell.
The typical of the third circuit structure is realized as shown in figure 9, being described in detail below.
The pFET application of logic circuit module of NANDOR basic units can also be realized by 910 module shown in Fig. 9,910 by
911,912,913,914,915,916 6 pFET pipes, a sram cell 917 form.
As shown in figure 9, the source electrode of pipe 911 connects power supply in 910 modules, drain electrode join two pipes together 912 source electrode, grid is by SRAM
Unit exports s controls；The source electrode of pipe 912 join two pipes together 911 drain electrode, drain electrode join two pipes together 913,915 source electrode, grid is by signal
A is controlled；The source electrode of pipe 913 join two pipes together 912,914 drain electrode, drain electrode connect the ends signal wire y, grid is controlled by signal a；Pipe
914 source electrodes connect power supply, drain electrode join two pipes together 913,915 source electrode, grid controls by signal b；915 source electrode of pipe joins two pipes together 912,
914 drain electrode, drain electrode join two pipes together 916 source electrode, grid by sram cell output s control；916 source electrode of pipe joins two pipes together 915
Drain electrode, drain electrode connect the ends signal wire y, and grid is controlled by signal b.
When storage value is configured to high level 1 in sram cell 917, pipe 911,915 ends, and a signals control 912 Hes
913, b signals control pipe 914 and 916, and pipe 913 and 914 is connected, and the pFET electrical road logic function of NOR operations is realized；When
When storage value is configured to low level 0 in sram cell 917, pipe 911 and 915 is connected, and realizes the pFET electrical of NAND operations
Road logic function.
Equally, 920 modules in Fig. 9 are nFET application of logic circuit module, by 921,922,923,924,925,926 6
PFET pipes form, symmetrical with pFET logic circuitry portions in Fig. 9.Wherein s signals are from the sram cell shared with 910 modules.
The drain electrode of pipe 921 connects the ends signal wire y in 920 modules, source electrode join two pipes together 922 drain electrode, grid is by sram cell
Export s controls；The drain electrode of pipe 922 join two pipes together 921 source electrode, source electrode join two pipes together 923,925 drain electrode, while joining two pipes together 924
Source electrode, grid controls by signal a；The drain electrode of pipe 923 connects 922 source electrode, source electrode ground connection, and grid is controlled by signal a；Pipe
924 drain electrode poles connect the ends signal wire y, source electrode join two pipes together 923,925 drain electrode, grid controls by signal b；The drain electrode of pipe 925 is taken over
Son 922,924 source electrode, source electrode join two pipes together 926 drain electrode, grid by sram cell output s control；The drain electrode of pipe 926 is joined two pipes together
925 source electrode, source electrode ground connection, grid are controlled by signal b.
When storage value is configured to high level 1 in sram cell, nFET pipes 921 and 923 are connected, and realize NOR operations
NFET circuit logic functions；When storage value is configured to low level 0 in sram cell, nFET pipes 921 and 923 end, pipe
Son 923 and 924 is connected, a and b signals control pipe 923 and 924 respectively, realizes the nFET circuit logic functions of NAND operations.
Module 910, which is connected by y signal wires with module 920 and draws port from y signal wires, to be exported, you can with by configuring this
Complete NAND NOR logic functions may be implemented in sram cell.
Wherein, the s signals and a data connect on the first-the three pFET pipes in the module 910 shown in Fig. 9 is interchangeable, and third is extremely
The s signals and b signals connect on 6th pFET pipes is interchangeable, equally, the s signals connect on the first-the three nFET pipes in module 920
Interchangeable with a data, the s signals and b signals connect in third to the 6th nFET pipes is interchangeable.
The way of realization of NANDOR basic units equally can be pFET application of logic circuit module and nFET in said units
The arbitrary combination of application of logic circuit module is realized.
Upper pull-up network pFET application of logic circuit module and pulldown network nFET application of logic circuit module can be arbitrary shown in Fig. 4-9
Combination constitutes NANDOR basic units.Further, upper pull-up network pFET logics electricity shown in Fig. 4-9 proposed by the present invention
Road module can also arbitrarily combine with any other lower seine nFET application of logic circuit module in the prior art and constitute NANDOR bases
This unit.
The present invention proposes a kind of programmable logic cells based on and-or inverter wimble structure, can be using this element as basic
The basic component units of AIC logics, are cascaded by multilayer, realize a variety of different complex logic functions.The NANDOR logic lists
Meta structure is simple, compared with the basic AIC units in Fig. 2, realizes that the number of tubes needed for complete function can be reduced, is passed through
Delay path it is also smaller, therefore it is all more excellent than the AIC basic units in prior art Fig. 2 on area and delay performance.Together
When the NANDOR logic units alleviate existing for the AIC basic units in Fig. 2 different configuring condition path delay and differ greatly
The problem of, it can be may be implemented the difference of different configuration delays by being adjusted to the pipe parameter in structure of the invention
It is transferred to required range.
NANDOR units proposed by the present invention are maintaining speed of Fig. 2A IC basic units compared with conventional LUT structure
Soon, more simple in structure realization on the basis of the characteristics of scalability is strong, energy multiplexing logical resource, promotion resource utilization
Single, area smaller, speed faster, and can compensate for existing for Fig. 2A IC basic units by adjusting the method for pipe parameter
Configuration path delay difference problem.
Particular embodiments described above has carried out further in detail the purpose of the present invention, technical solution and advantageous effect
Describe in detail bright, it should be understood that the above is only a specific embodiment of the present invention, is not intended to restrict the invention, it is all
Within the spirit and principles in the present invention, any modification, equivalent substitution, improvement and etc. done should be included in the protection of the present invention
Within the scope of.
Claims (8)
1. a kind of programmable logic cells based on and-or inverter structure comprising and-or inverter basic unit, the and-or inverter are basic
Unit realizes the first input data and the second input data nand under the control of the output control signal of SRAM memory cell
Or the function of nondisjunction, by multistage interconnected, it can be achieved that any logic function expresses formula；
Wherein, the and-or inverter basic unit includes：Upper pull-up network pFET application of logic circuit module and pulldown network nFET logic electricity
Road module；Upper pull-up network pFET application of logic circuit module includes that at least one first pFET at least one 5th pFET is managed；
The source electrode of at least one first pFET pipe and at least one 3rd pFET pipes connects power supply, and described at least one first
The drain electrode of pFET pipes connects the source electrode of at least one 2nd pFET pipe and at least one 5th pFET pipes, at least one third
The drain electrode of pFET pipes connects the drain electrode of the source electrode and at least one 5th pFET pipes of at least one 4th pFET pipes, it is described at least
The ends drain signal line y of one the 2nd pFET and at least one 4th pFET pipes；At least one first pFET and
The grid of at least one 2nd pFET pipes is connect respectively in the output control signal of first input data and SRAM memory cell
One, the grid that at least one 3rd pFET at least one 4th pFET at least one is managed connects the second input number
According to the grid of at least one 5th pFET pipes connects the inversion signal of the output control signal of the SRAM memory cell.
2. the programmable logic cells as described in claim 1 based on and-or inverter structure, wherein described at least one first
The grid of pFET pipes connects the first input data, and the grid of at least one 2nd pFET pipes connects the output signal of SRAM memory cell,
The grid of at least one 3rd pFET pipes connects the output signal of SRAM memory cell, the grid of at least one 4th pFET pipes
Connect the second input data.
3. the programmable logic cells as described in claim 1 based on and-or inverter structure, wherein described at least one first
The grid of pFET pipes connects the first input data, and the grid of at least one 2nd pFET pipes connects the output signal of SRAM memory cell,
The grid of at least one 3rd pFET pipes and at least one 4th pFET pipes connects the second input data.
4. the programmable logic cells as described in any one of claims 1-3 based on and-or inverter structure, wherein the lower seine
Network nFET application of logic circuit module includes that at least one first nFET at least one 5th nFET is managed；
The drain electrode of at least one first nFET pipes and at least one 3rd nFET pipes connects the ends signal wire y, described at least one
The source electrode of first nFET pipes connects the drain electrode of at least one 2nd nFET pipe and at least one 5th nFET pipes, and described at least one the
The source electrode of three nFET pipes connect at least one 4th nFET pipes drain electrode and at least one 5th nFET pipes source electrode, it is described extremely
The source electrode of few 2nd nFET and at least one 4th nFET pipes ground connection；Described at least one first at least one
The grid of two nFET pipes one of connects in the output control signal of first input data and SRAM memory cell respectively,
The grid that at least one 3rd nFET at least one 4th nFET at least one is managed connects second input data, at least
The grid of one the 5th nFET pipe connects the inversion signal of the output control signal of the SRAM memory cell.
5. the programmable logic cells as claimed in claim 4 based on and-or inverter structure, wherein described at least one first
The grid of nFET pipes connects the first input data, and the grid of at least one 2nd nFET pipes connects the output signal of SRAM memory cell,
The grid of at least one 3rd nFET pipes connects the output signal of SRAM memory cell, the grid of at least one 4th nFET pipes
Connect the second input data.
6. the programmable logic cells as claimed in claim 4 based on and-or inverter structure, wherein described at least one first
The grid of nFET pipes connects the first input data, and the grid of at least one 2nd nFET pipes connects the output signal of SRAM memory cell,
The grid of at least one 3rd nFET pipes and at least one 4th nFET pipes connects the second input data.
7. the programmable logic cells based on and-or inverter structure as described in claims 1 or 2 or 3 or 5 or 6, wherein work as SRAM
When the output control signal of storage unit is high level, the upper pull-up network pFET application of logic circuit module realizes the first input data
With the pFET electrical road logic function of the second input data neither-NOR operation, the pulldown network nFET application of logic circuit module realizes the
The nFET circuit logic functions of one input data and the second input data neither-NOR operation；When the output of SRAM memory cell controls
When signal is low level, the upper pull-up network pFET application of logic circuit module realize the first input data and the second input data " with
It is non-" the pFET electrical road logic function of operation, the pulldown network nFET application of logic circuit module realizes the first input data and second
The nFET circuit logic functions of input data NAND operation.
8. the programmable logic cells as claimed in claim 4 based on and-or inverter structure, wherein defeated when SRAM memory cell
When to go out to control signal be high level, the upper pull-up network pFET application of logic circuit module realizes the first input data and the second input number
According to the pFET electrical road logic function of neither-NOR operation, the pulldown network nFET application of logic circuit module realize the first input data and
The nFET circuit logic functions of second input data neither-NOR operation；When the output control signal of SRAM memory cell is low level
When, the upper pull-up network pFET application of logic circuit module realizes the pFET of the first input data and the second input data NAND operation
Circuit logic function, the pulldown network nFET application of logic circuit module realize the first input data and the second input data nand
The nFET circuit logic functions of operation.
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| CN1547324A (en) * | 2003-12-16 | 2004-11-17 | 复旦大学 | Programmable logic unit structure |
| CN101682329A (en) * | 2008-01-30 | 2010-03-24 | 雅格罗技（北京）科技有限公司 | A kind of integrated circuit with improved logical block |
| CN102647181A (en) * | 2008-01-30 | 2012-08-22 | 雅格罗技（北京）科技有限公司 | Integrated circuit with improved logic cells |
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| US9285808B2 (en) * | 2013-03-05 | 2016-03-15 | Qualcomm Incorporated | Adaptive switching voltage regulator |
| US8981831B1 (en) * | 2013-09-11 | 2015-03-17 | International Business Machines Corporation | Level shifter with built-in logic function for reduced delay |
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| CN1547324A (en) * | 2003-12-16 | 2004-11-17 | 复旦大学 | Programmable logic unit structure |
| CN101682329A (en) * | 2008-01-30 | 2010-03-24 | 雅格罗技（北京）科技有限公司 | A kind of integrated circuit with improved logical block |
| CN102647181A (en) * | 2008-01-30 | 2012-08-22 | 雅格罗技（北京）科技有限公司 | Integrated circuit with improved logic cells |
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