CN220340756U - Circuit device compatible with PSAM card and SIM card and POS terminal - Google Patents
Circuit device compatible with PSAM card and SIM card and POS terminal Download PDFInfo
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Abstract
The application relates to a circuit device compatible with a PSAM card and a SIM card and a POS terminal, wherein the circuit device comprises a PCB board; the PCB is integrated with a SAM card seat, an electrostatic protection module, a first diode, a second diode, a third diode and a resistance capacitance module; one end of the electrostatic protection module is connected with a first working voltage line and a second working voltage line, and is used for receiving a SAM_VDD signal and a SIM2_VDD signal, a first connecting line is connected to a pin2 of the SAM card holder and is used for receiving a SIM2_RST signal, and a first outgoing line is connected to the first connecting line and is used for receiving the SAM2_RST signal; the 3 pin of the SAM card seat is connected with a second connecting wire for receiving the SIM2_CLK signal, and the second connecting wire is connected with a second outgoing line for receiving the SAM2_CLK signal; and the 7 pins of the SAM card holder are connected with a third connecting wire for receiving the SIM2_IO signal, and the third connecting wire is connected with a third outgoing line for receiving the SAM2_IO signal. And the SAM card holder selects PSAM card signals or SIM card signals according to the product configuration, so that a specific PSAM card circuit or SIM card circuit is realized, and the cost is saved.
Description
Technical Field
The present disclosure relates to the field of financial payment terminals, and in particular, to a circuit device compatible with a PSAM card and a SIM card, and a POS terminal.
Background
The intelligent POS terminal is one of the mainstream payment terminals in the market at present, and the communication mode of the intelligent POS terminal comprises 4G mobile communication, WIFI, bluetooth and the like. The intelligent POS terminal needs to communicate with a third party payment transaction background, and 4G whole network communication is one of the most main communication modes, so that the POS terminal needs to be provided with a SIM card. Moreover, the intelligent POS terminal is used as a financial payment terminal, the terminal security is highly required, the PSAM card adopts a hardware encryption technology, and the security authentication and encryption are carried out by storing a secret key in the PSAM card, so that the intelligent POS terminal belongs to an important security control module of the intelligent POS terminal, and at least one SIM card and one PSAM card are configured in the intelligent POS terminal.
However, as the standards of customer requirements continue to increase, the number of SIM cards and PSAM cards also increases, and corresponding numbers of SIM cards and PSAM cards are required on the PCB. It should be noted that, the requirement of the intelligent POS terminal on the external dimension is higher, the area of the PCB is compact and the space is precious, and simultaneously, placing a plurality of SIM card holders and PSAM card holders can all cause excessive burden on the intelligent POS terminal and the internal PCB, so that the product cost is increased.
Disclosure of Invention
In view of this, the present application proposes a circuit device compatible with a PSAM card and a SIM card, and a POS terminal, so as to solve the above-mentioned problems.
According to an aspect of the present application, there is provided a circuit arrangement compatible with a PSAM card and a SIM card, including: a PCB board;
the PCB is integrated with a SAM card seat, an electrostatic protection module, a first diode, a second diode, a third diode and a resistance capacitance module;
the 1 foot and the 5 foot of the SAM card holder are respectively and electrically connected with two ends of the electrostatic protection module, one end of the electrostatic protection module is also respectively connected with a first working voltage line and a second working voltage line which are respectively used for receiving SAM_VDD signals and SIM2_VDD signals, and the other end of the electrostatic protection module is grounded;
one end of the first diode is electrically connected with the 2 pins of the SAM card holder, the other end of the first diode is grounded, the 2 pins of the SAM card holder are also connected with a first connecting wire for receiving a SIM2_RST signal, and the first connecting wire is also connected with a first outgoing line for receiving the SAM2_RST signal;
one end of the second diode is electrically connected with the 3 pin of the SAM card holder, the other end of the second diode is grounded, the 3 pin of the SAM card holder is also connected with a second connecting wire for receiving a SIM2_CLK signal, and the second connecting wire is also connected with a second outgoing line for receiving the SAM2_CLK signal;
one end of the third triode is electrically connected with the 7 pin of the SAM card holder, the other end of the third triode is grounded, the 7 pin of the SAM card holder is also connected with a third connecting wire for receiving a SIM2_IO signal, and the third connecting wire is also connected with a third outgoing line for receiving the SAM2_IO signal;
one end of the resistance capacitance module is connected to the second working voltage line, and the other end of the resistance capacitance module is grounded.
In one possible implementation manner, a first resistor is connected to the first connection line, a second resistor is connected to the second connection line, a third resistor is connected to the third connection line, and a fourth resistor is connected to the second working voltage line;
one end of the first resistor receives the SIM2_RST signal, and the other end of the first resistor is electrically connected with a pin2 of the SAM card holder; one end of the second resistor receives the SIM2_CLK signal, and the other end of the second resistor is electrically connected with the 3 pin of the SAM card holder; one end of the third resistor receives the SIM2_IO signal, and the other end of the third resistor is electrically connected with the 7 pin of the SAM card holder; one end of the fourth resistor receives the SIM2_VDD signal, and the other end of the fourth resistor is electrically connected with the electrostatic protection module.
In one possible implementation manner, a fifth resistor is connected to the first outgoing line, a sixth resistor is connected to the second outgoing line, a seventh resistor is connected to the third outgoing line, and an eighth resistor is connected to the first working voltage line;
one end of the fifth resistor receives the SAM2_RST signal, and the other end of the fifth resistor is electrically connected with the 2 pin of the SAM card holder; one end of the sixth resistor receives the SAM2_CLK signal, and the other end of the sixth resistor is electrically connected with the 3 pin of the SAM card holder; one end of the seventh resistor receives the SAM2_IO signal, and the other end of the seventh resistor is electrically connected with the 7 pin of the SAM card holder; one end of the eighth resistor receives the SAM2_VDD signal, and the other end of the eighth resistor is electrically connected with the electrostatic protection module.
In one possible implementation, the electrostatic protection module includes a first capacitor, a second capacitor, and a fourth diode;
the first capacitor, the second capacitor and the fourth diode are connected in parallel with each other.
In one possible implementation, the rc module includes a first rc group, a second rc group, and a third rc group;
the first resistance capacitance group, the second resistance capacitance group and the third resistance capacitance group are electrically connected with the second working voltage line at one end and grounded at the other end.
In one possible implementation manner, the first resistance-capacitance group includes a ninth resistance and a third capacitance, the second resistance-capacitance group includes a tenth resistance and a fourth capacitance, and the third resistance-capacitance group includes an eleventh resistance and a fifth capacitance;
one end of the ninth resistor is electrically connected to one end of the fourth diode, the other end of the ninth resistor is electrically connected to the pin7 of the SAM card holder and one end of the third capacitor respectively, and the other end of the third capacitor is grounded;
one end of the tenth resistor is electrically connected to one end of the fourth diode, the other end of the tenth resistor is electrically connected to the pin3 of the SAM card holder and one end of the fourth capacitor respectively, and the other end of the fourth capacitor is grounded;
one end of the eleventh resistor is electrically connected to one end of the fourth diode, the other end of the eleventh resistor is electrically connected to the pin of the SAM card holder 2 and one end of the fifth capacitor respectively, and the other end of the fifth capacitor is grounded.
In one possible implementation, the first diode, the second diode, the third diode, and the fourth diode are all diacs.
In one possible implementation, the SAM cartridge is of the type MUP-C717.
According to another aspect of the present application, there is provided a POS terminal comprising a circuit arrangement compatible with a PSAM card and a SIM card as described in any one of the above.
The beneficial effects of this application:
on the premise that both the PSAM card and the SIM card accord with the international standard of the ISO/IEC 7816 series, each pin of one card holder is connected with different connecting wires and is respectively used for receiving SAM_VDD signals, SAM2_CLK signals, SAM2_IO signals, SAM2_RST signals, and SIM2_VDD signals, SIM2_CLK signals, SIM2_IO signals and SIM2_RST signals, and the SAM card holder is enabled to selectively receive PSAM card related signals or SIM card related signals according to specific product configuration, so that a specific PSAM card circuit or SIM card circuit is realized. Therefore, the use requirements of two PSAM cards and one SIM card can be met on the basis of the original POS terminal, namely the POS terminal with one PSAM card and one SIM card, the two SIM cards and the one PSAM card do not need to be configured to occupy the PCB, the space area on the PCB can be saved, and the production and maintenance cost of products can be reduced. Meanwhile, in order to prevent the circuits such as the connecting wire, the outgoing wire and the working voltage line from being subjected to electrostatic impact, electrostatic protection treatment is carried out on each signal line, TVS (transient voltage suppressor) tubes RV7, RV8 and RV9 are added on the connecting wire, and an electrostatic protection module is arranged to be connected with the working voltage line, so that electrostatic interference on each signal line is solved, and the electrostatic impact is avoided.
Other features and aspects of the present application will become apparent from the following detailed description of exemplary embodiments, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate exemplary embodiments, features and aspects of the present application and together with the description, serve to explain the principles of the present application.
Fig. 1 shows a schematic circuit diagram of a circuit arrangement compatible with a PSAM card and a SIM card according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of a SAM cartridge according to an embodiment of the present application.
Detailed Description
Various exemplary embodiments, features and aspects of the present application will be described in detail below with reference to the accompanying drawings. In the drawings, like reference numbers indicate identical or functionally similar elements. Although various aspects of the embodiments are illustrated in the accompanying drawings, the drawings are not necessarily drawn to scale unless specifically indicated.
It should be understood, however, that the terms "center," "longitudinal," "transverse," "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counter-clockwise," "axial," "radial," "circumferential," and the like indicate or are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description or to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and therefore should not be construed as limiting the present application.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
The word "exemplary" is used herein to mean "serving as an example, embodiment, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments.
In addition, numerous specific details are set forth in the following detailed description in order to provide a better understanding of the present application. It will be understood by those skilled in the art that the present application may be practiced without some of these specific details. In some instances, methods, means, elements, and circuits have not been described in detail as not to unnecessarily obscure the present application.
Example 1
As shown in fig. 1, according to an aspect of the present application, there is provided a circuit apparatus compatible with a PSAM card and a SIM card, including: a PCB board;
the PCB is integrated with a SAM card holder, an electrostatic protection module 100, a first diode RV9, a second diode RV8, a third diode RV7 and a resistance capacitance module 200;
the pin1 and the pin5 of the SAM card seat are respectively and electrically connected with two ends of the electrostatic protection module 100, one end of the electrostatic protection module 100 is also respectively connected with a first working voltage line and a second working voltage line, the first working voltage line and the second working voltage line are respectively used for receiving sam_vdd signals and sim2_vdd signals, and the other end of the electrostatic protection module 100 is grounded;
one end of the first diode RV9 is electrically connected with the 2 pins of the SAM card holder, the other end of the first diode RV9 is grounded, the 2 pins of the SAM card holder are also connected with a first connecting wire for receiving a SIM2_RST signal, and the first connecting wire is also connected with a first outgoing wire for receiving the SAM2_RST signal;
one end of the second diode RV8 is electrically connected with the 3 pin of the SAM card holder, the other end of the second diode RV8 is grounded, the 3 pin of the SAM card holder is also connected with a second connecting wire for receiving a SIM2_CLK signal, and the second connecting wire is also connected with a second outgoing line for receiving the SAM2_CLK signal;
one end of the third diode RV7 is electrically connected with the 7 pin of the SAM card holder, the other end of the third diode RV7 is grounded, the 7 pin of the SAM card holder is also connected with a third connecting wire for receiving a SIM2_IO signal, and the third connecting wire is also connected with a third lead-out wire for receiving the SAM2_IO signal;
one end of the resistor-capacitor module 200 is connected to the second working voltage line, and the other end is grounded.
In this embodiment, on the premise that both the PSAM card and the SIM card conform to international standards of ISO/IEC 7816 series, each pin of one card holder is connected to a different connection line, so as to respectively receive a sam_vdd signal, a SAM2_clk signal, a SAM2_io signal, a SAM2_rst signal, and a SIM2_vdd signal, a SIM2_clk signal, a SIM2_io signal, and a SIM2_rst signal, and according to a specific product configuration, the SAM card holder selectively receives a PSAM card related signal or a SIM card related signal, thereby implementing a specific PSAM card circuit or SIM card circuit. Therefore, the use requirements of two PSAM cards and one SIM card can be met on the basis of the original POS terminal, namely the POS terminal with one PSAM card and one SIM card, the two SIM cards and the one PSAM card do not need to be configured to occupy the PCB, the space area on the PCB can be saved, and the production and maintenance cost of products can be reduced. Meanwhile, in order to prevent the circuits such as the connecting wire, the outgoing wire and the working voltage line from being subjected to electrostatic impact, electrostatic protection treatment is carried out on each signal line, TVS (transient voltage suppressor) tubes RV7, RV8 and RV9 are added on the connecting wire, and an electrostatic protection module is arranged to be connected with the working voltage line, so that electrostatic interference on each signal line is solved, and the electrostatic impact is avoided.
In a possible implementation manner, a first resistor R7 is connected to the first connection line, a second resistor R8 is connected to the second connection line, a third resistor R9 is connected to the third connection line, and a fourth resistor R19 is connected to the second operating voltage line;
one end of the first resistor R7 receives the SIM2_RST signal, and the other end of the first resistor R7 is electrically connected with the pin2 of the SAM card holder; one end of the second resistor R8 receives the SIM2_CLK signal, and the other end of the second resistor R8 is electrically connected with the 3 pin of the SAM card holder; one end of the third resistor R9 receives the SIM2_IO signal, and the other end of the third resistor R9 is electrically connected with the 7 pin of the SAM card holder; one end of the fourth resistor R19 receives the sim2_vdd signal, and the other end is electrically connected to the electrostatic protection module 100.
Further, in a possible implementation manner, a fifth resistor R10 is connected to the first outgoing line, a sixth resistor R11 is connected to the second outgoing line, a seventh resistor R12 is connected to the third outgoing line, and an eighth resistor R18 is connected to the first working voltage line;
one end of the fifth resistor R10 receives the SAM2_RST signal, and the other end of the fifth resistor R is electrically connected with the pin2 of the SAM card holder; one end of the sixth resistor R11 receives the SAM2_CLK signal, and the other end is electrically connected with the 3 pin of the SAM card holder; one end of the seventh resistor R12 receives the SAM2_IO signal, and the other end of the seventh resistor R12 is electrically connected with the 7 pin of the SAM card holder; one end of the eighth resistor R18 receives the SAM2_vdd signal, and the other end is electrically connected to the electrostatic protection module 100.
In this embodiment, when the terminal is configured as a dual SIM card and a single PSAM card, the first resistor R7, the second resistor R8, the third resistor R9, and the fourth resistor R19, that is, the SAM card holder receives the sim2_rst signal, the sim2_clk signal, the sim2_io signal, and the sim2_vdd signal, respectively, and at this time, the configuration of the external POS terminal is two SIM cards and one PSAM card, which satisfies the higher use requirement and saves the cost.
Further, when the terminal is configured as a single SIM card and a dual PSAM card, the fifth resistor R10, the sixth resistor R11, the seventh resistor R12 and the eighth resistor R18, that is, the SAM card holder receives the SAM2_rst signal, the SAM2_clk signal, the SAM2_io signal and the SAM2_vdd signal respectively, and at this time, the configuration of the external POS terminal is one SIM card and two PSAM cards, that is, the application can flexibly patch different resistors according to specific use requirements of the terminal configuration, thereby realizing a PSAM card circuit or a SIM card circuit, meeting requirements without correspondingly using a plurality of card holders, releasing more PCB board space, and reducing production difficulty and production cost. It should be noted that, as shown in fig. 2, the SAM card seat in this embodiment is 8 pads arranged in 4X2, and the pitch of the pads is 2.54mm and 17.4mm respectively. Specifically, the working voltage is 3.3V, the power supply PIN is PIN1, PIN5 is GND PIN, and the signal PIN is RST, IO, CLK, wherein RST is PIN2, CLK is PIN3, and IO is PIN7.
In one possible implementation, the electrostatic protection module 100 includes a first capacitor C3, a second capacitor C4, and a fourth diode RV2;
the first capacitor C3, the second capacitor C4 and the fourth diode RV2 are connected in parallel to each other.
In this embodiment, the electrostatic protection module 100 is configured to prevent the first working voltage line and the first working voltage line from being subjected to electrostatic interference, where the fourth diode RV2 is a TVS tube, so that electrostatic interference on the line can be effectively solved, and electrostatic impact is avoided.
In one possible implementation, the rc module includes a first rc group, a second rc group, and a third rc group;
the first resistance capacitance group, the second resistance capacitance group and the third resistance capacitance group are electrically connected with the second working voltage line at one end and grounded at the other end.
Wherein, in a possible implementation manner, the first resistance-capacitance group includes a ninth resistance R5 and a third capacitance C8, the second resistance-capacitance group includes a tenth resistance R6 and a fourth capacitance C9, and the third resistance-capacitance group includes an eleventh resistance R4 and a fifth capacitance C10;
one end of the ninth resistor R5 is electrically connected to one end of the fourth diode RV2, the other end of the ninth resistor R5 is electrically connected to one end of the SAM card holder 7 pin and one end of the third capacitor C8 respectively, and the other end of the third capacitor C8 is grounded;
one end of the tenth resistor R6 is electrically connected to one end of the fourth diode RV2, the other end of the tenth resistor R6 is respectively electrically connected to the pin3 of the SAM card holder and one end of the fourth capacitor C9, and the other end of the fourth capacitor C9 is grounded;
one end of the eleventh resistor R4 is electrically connected to one end of the fourth diode RV2, the other end of the eleventh resistor R4 is electrically connected to the pin of the SAM card holder 2 and one end of the fifth capacitor C10, and the other end of the fifth capacitor C10 is grounded.
In this embodiment, in order to ensure the transmission quality of each line, a filter capacitor is added to each line, which specifically includes a third capacitor C8, a fourth capacitor C9 and a fifth capacitor C10, where the capacitance values are 33pF, so that high-frequency clutter interference can be effectively filtered, and signal smoothness is ensured.
In one possible implementation, the first diode RV9, the second diode RV8, the third diode RV7 and the fourth diode RV2 are all diacs.
In one possible implementation, the SAM cartridge is of the type MUP-C717.
In summary, the present application adopts a compatible design concept on the premise of ensuring the basic configuration of 1 SIM card and 1 PSAM card in the original POS terminal, and the same card holder accesses two signal sources of the PSAM card and the SIM card, and in actual production, a specific PSAM card circuit or SIM card circuit is implemented according to different requirements. That is, 1 card holder is compatible with the functions of the SIM card and the PSAM card, and the physical space of 1 card holder is saved, so that the PCB space and the product cost are saved. Meanwhile, an electrostatic protection circuit is built by utilizing TVS, and a 33pF capacitor is connected in parallel to filter clutter interference, so that signal quality is ensured.
According to another aspect of the present application, there is provided a POS terminal comprising a circuit arrangement compatible with a PSAM card and a SIM card as described in any one of the above.
The embodiments of the present application have been described above, the foregoing description is exemplary, not exhaustive, and not limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the various embodiments described. The terminology used herein was chosen in order to best explain the principles of the embodiments, the practical application, or the improvement of technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.
Claims (9)
1. A circuit arrangement compatible with a PSAM card and a SIM card, comprising: a PCB board;
the PCB is integrated with a SAM card seat, an electrostatic protection module, a first diode, a second diode, a third diode and a resistance capacitance module;
the 1 foot and the 5 foot of the SAM card holder are respectively and electrically connected with two ends of the electrostatic protection module, one end of the electrostatic protection module is also respectively connected with a first working voltage line and a second working voltage line which are respectively used for receiving SAM_VDD signals and SIM2_VDD signals, and the other end of the electrostatic protection module is grounded;
one end of the first diode is electrically connected with the 2 pins of the SAM card holder, the other end of the first diode is grounded, the 2 pins of the SAM card holder are also connected with a first connecting wire for receiving a SIM2_RST signal, and the first connecting wire is also connected with a first outgoing line for receiving the SAM2_RST signal;
one end of the second diode is electrically connected with the 3 pin of the SAM card holder, the other end of the second diode is grounded, the 3 pin of the SAM card holder is also connected with a second connecting wire for receiving a SIM2_CLK signal, and the second connecting wire is also connected with a second outgoing line for receiving the SAM2_CLK signal;
one end of the third diode is electrically connected with the 7 pin of the SAM card holder, the other end of the third diode is grounded, the 7 pin of the SAM card holder is also connected with a third connecting wire for receiving a SIM2_IO signal, and the third connecting wire is also connected with a third outgoing line for receiving the SAM2_IO signal;
one end of the resistance capacitance module is connected to the second working voltage line, and the other end of the resistance capacitance module is grounded.
2. The circuit arrangement compatible with PSAM and SIM cards according to claim 1, wherein a first resistor is connected to the first connection line, a second resistor is connected to the second connection line, a third resistor is connected to the third connection line, and a fourth resistor is connected to the second operating voltage line;
one end of the first resistor receives the SIM2_RST signal, and the other end of the first resistor is electrically connected with a pin2 of the SAM card holder; one end of the second resistor receives the SIM2_CLK signal, and the other end of the second resistor is electrically connected with the 3 pin of the SAM card holder; one end of the third resistor receives the SIM2_IO signal, and the other end of the third resistor is electrically connected with the 7 pin of the SAM card holder; one end of the fourth resistor receives the SIM2_VDD signal, and the other end of the fourth resistor is electrically connected with the electrostatic protection module.
3. The circuit arrangement compatible with PSAM and SIM cards according to claim 1, wherein a fifth resistor is connected to the first outgoing line, a sixth resistor is connected to the second outgoing line, a seventh resistor is connected to the third outgoing line, and an eighth resistor is connected to the first operating voltage line;
one end of the fifth resistor receives the SAM2_RST signal, and the other end of the fifth resistor is electrically connected with the 2 pin of the SAM card holder; one end of the sixth resistor receives the SAM2_CLK signal, and the other end of the sixth resistor is electrically connected with the 3 pin of the SAM card holder; one end of the seventh resistor receives the SAM2_IO signal, and the other end of the seventh resistor is electrically connected with the 7 pin of the SAM card holder; one end of the eighth resistor receives the SAM_VDD signal, and the other end of the eighth resistor is electrically connected with the electrostatic protection module.
4. The circuit arrangement compatible with PSAM and SIM cards according to claim 2, wherein the electrostatic protection module includes a first capacitor, a second capacitor, and a fourth diode;
the first capacitor, the second capacitor and the fourth diode are connected in parallel with each other.
5. The circuit arrangement compatible with PSAM and SIM cards of claim 4, wherein the rc module includes a first rc group, a second rc group, and a third rc group;
the first resistance capacitance group, the second resistance capacitance group and the third resistance capacitance group are electrically connected with the second working voltage line at one end and grounded at the other end.
6. The circuit arrangement of claim 5, wherein the first set of resistance and capacitance comprises a ninth resistance and a third capacitance, the second set of resistance and capacitance comprises a tenth resistance and a fourth capacitance, and the third set of resistance and capacitance comprises an eleventh resistance and a fifth capacitance;
one end of the ninth resistor is electrically connected to one end of the fourth diode, the other end of the ninth resistor is electrically connected to the pin7 of the SAM card holder and one end of the third capacitor respectively, and the other end of the third capacitor is grounded;
one end of the tenth resistor is electrically connected to one end of the fourth diode, the other end of the tenth resistor is electrically connected to the pin3 of the SAM card holder and one end of the fourth capacitor respectively, and the other end of the fourth capacitor is grounded;
one end of the eleventh resistor is electrically connected to one end of the fourth diode, the other end of the eleventh resistor is electrically connected to the pin of the SAM card holder 2 and one end of the fifth capacitor respectively, and the other end of the fifth capacitor is grounded.
7. The circuit arrangement compatible with PSAM and SIM cards according to claim 4, wherein the first diode, the second diode, the third diode, and the fourth diode are all diacs.
8. The circuit arrangement compatible with PSAM and SIM cards according to claim 1, wherein the SAM cartridge is of the type MUP-C717.
9. A POS terminal comprising a circuit arrangement compatible with a PSAM card and a SIM card as claimed in any one of the preceding claims 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321895469.7U CN220340756U (en) | 2023-07-18 | 2023-07-18 | Circuit device compatible with PSAM card and SIM card and POS terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321895469.7U CN220340756U (en) | 2023-07-18 | 2023-07-18 | Circuit device compatible with PSAM card and SIM card and POS terminal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220340756U true CN220340756U (en) | 2024-01-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321895469.7U Active CN220340756U (en) | 2023-07-18 | 2023-07-18 | Circuit device compatible with PSAM card and SIM card and POS terminal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220340756U (en) |
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2023
- 2023-07-18 CN CN202321895469.7U patent/CN220340756U/en active Active
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