CN104808852A - Touch identification and digital display integrated circuit as well as peripheral circuit and accessing method thereof - Google Patents
Touch identification and digital display integrated circuit as well as peripheral circuit and accessing method thereof Download PDFInfo
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- CN104808852A CN104808852A CN201510215856.5A CN201510215856A CN104808852A CN 104808852 A CN104808852 A CN 104808852A CN 201510215856 A CN201510215856 A CN 201510215856A CN 104808852 A CN104808852 A CN 104808852A
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Abstract
The invention relates to a touch identification and digital display integrated circuit as well as a peripheral circuit and an accessing method thereof. The same group of pins which reuse the integrated circuit are adopted so that functions of driving digital tubes and identifying touch keys are realized, and 12 touch keys can be identified at maximum, and a 4-bit common cathode digital tubes and a 4-bit common anode digital tube (or 64 LED (Light Emitting Diode) lamps) can be driven at maximum. The integrated circuit provided by the invention can help a user to simplify a design scheme, and an IO (Input/Output) pin of an upper computer is further saved, so that the scheme cost of the user is greatly reduced; furthermore, the integrated circuit further provides an identify authentication scheme and the cost of a third party for cracking the design scheme is increased; the possibility that the design scheme of the user is copied is effectively reduced; meanwhile, the accessing manner of the integrated circuit is pertinently simplified and is more convenient to control by the user.
Description
Technical field
The present invention relates to a kind of touch recognition and digital-scroll technique integrated circuit, and the external circuits of this integrated circuit and access method.
Background technology
Traditional panel use the scheme of touch key-press and numeral method be generally the identification chip of an employing independent touch key-press and a drive charactron and LED display chip, or adopt discrete device to realize touch key-press identification or drive charactron and LED display, but the realization of these two schemes needs a lot of pins taken in host computer, not only occupy very large fabric swatch area, very wasting space, and higher cost need be spent, the service efficiency of related chip is also very low, and host computer is also very complicated to the access mode of each chip.
Summary of the invention
The object of the invention is to overcome the drawback as existed in above-mentioned prior art, providing one both can realize touch recognition, also can realize the integrated circuit of digital-scroll technique, additionally provide external circuits and the access method of this integrated circuit simultaneously,
For achieving the above object, technical scheme of the present invention is: a kind of touch recognition and digital-scroll technique integrated circuit, it is characterized in that, described integrated circuit comprises: clock generating module, reset generation module, LDO module, serial communication protocol module, chip control module, charactron and LED display module, recognition by pressing keys module and encrypting module; This integrated circuit, while possessing touch key-press recognition function, can also drive numeral method or LED display;
The first end of described clock generating module is connected with LED display module first end, described recognition by pressing keys module first end and described encrypting module first end with the first end of described serial communication protocol module, described chip control module first end, described charactron respectively;
The output terminal of described reset generation module is connected with the second end of LED display module and the second end of described recognition by pressing keys module with the second end of described serial communication protocol module second end, described chip control module, the second end of described encrypting module input end, described charactron respectively;
The output terminal of described LDO module is connected with the power end of described clock generating module and the power end of described recognition by pressing keys module respectively; Described LDO module is used for providing a burning voltage for described clock generating module and described recognition by pressing keys module;
3rd end of described serial communication protocol module is connected with the 3rd end of described chip control module; 4th end of described serial communication protocol module is connected with the 3rd end of LED display module with described charactron; The five terminal of described serial communication protocol module is connected with the 3rd end of described recognition by pressing keys module; 6th end of described serial communication protocol module is the SCL clock end of this integrated circuit, and the clock that host computer communicates through this SCL clock end incoming serial; 7th end of described serial communication protocol module is the SDA data terminal of this integrated circuit, and host computer is through the input of this SDA data terminal or the data reading serial communication;
4th end of described chip control module is connected with the 4th end of LED display module with described charactron; The five terminal of described chip control module is connected with the 4th end of described recognition by pressing keys module; 6th end of described chip control module is connected with described encrypting module the 3rd end;
First of described recognition by pressing keys module identifies to the 8th, end identifies that end is connected respectively to the first end of the first logical circuit to the first end of the 8th logical circuit, first output terminal to the 8th output terminal of described charactron and LED display module is connected respectively to the second end of the first logical circuit to the second end of the 8th logical circuit, and the 3rd end of described first logical circuit to the 3rd end of described 8th logical circuit respectively as the first multiplexing end of this integrated circuit to the 8th multiplexing end;
The 9th of described recognition by pressing keys module identifies to the 12, end identifies that end is connected respectively to the first end of the 9th logical circuit to the first end of the 12 logical circuit, 9th output terminal of described charactron and LED display module to corresponding second end of the second end to the 12 logical circuit being connected to the 9th logical circuit of the 12 output terminal, and the 3rd end of described 9th logical circuit to the 3rd end of described 12 logical circuit respectively as the 9th multiplexing end of this integrated circuit to the 12 multiplexing end.
In an embodiment of the present invention, this integrated circuit encapsulates in the following manner: pin one is port E/KEY5; Pin two is port D/KEY4; Pin 3 is port DP/KEY8; Pin 4 is port C/KEY3; Pin 5 is port G/KEY7; Pin 6 is port DIG4/KEY12; Pin 7 is port GND; Pin 8 is port VDD; Pin 9 is port B/KEY2; Pin one 0 is port DIG3/KEY11; Pin one 1 is port DIG2/KEY10; Pin one 2 is port SCL; Pin one 3 is port SDA; Pin one 4 is port F/KEY6; Pin one 5 is port DIG1/KEY9; Pin one 6 is port A/KEY1; Wherein, described pin one 6, described pin 9, described pin 4, described pin two, described pin one, described pin one 4, described pin 5 and described pin 3 are connected to the 8th multiplexing end with the first multiplexing end of this integrated circuit respectively; Described pin one 5, described pin one 1, described pin one 0 and described pin 6 are connected to the 12 multiplexing end with the 9th multiplexing end of this integrated circuit respectively.
In an embodiment of the present invention, described first logical circuit to described 12 logical circuit inside includes an input logic circuit and an output logic circuit; Described input logic circuit comprises the level shifting circuit and Si Mite trigger circuit that connect successively; Described output logic circuit comprises the tristate output circuit and an ESD circuit that connect successively.
Further, the external circuits of a kind of touch recognition and digital-scroll technique integrated circuit is also provided, it is characterized in that, comprise: one 4 common cathode charactrons, one 4 common anode charactrons and are provided with the touch keyboard of 12 touch key-presss, wherein, this integrated circuit can drive described 4 common cathode charactrons and described 4 common anode charactrons, and can identify 12 touch key-presss on described touch keyboard; Described pin one is held with the e of described common cathode charactron respectively, the e of described common anode charactron holds and the 5th touch key-press is connected; Described pin two is held with the d of described common cathode charactron respectively, the d of described common anode charactron holds and the 4th touch key-press is connected; Described pin 3 is held with the dp of described common cathode charactron respectively, the dp of described common anode charactron holds and the 8th touch key-press is connected; Described pin 4 is held with the c of described common cathode charactron respectively, the c of described common anode charactron holds and the 3rd touch key-press is connected; Described pin 5 is held with the g of described common cathode charactron respectively, the g of described common anode charactron holds and the 7th touch key-press is connected; Described pin 6 is held with the C4 of described common cathode charactron respectively, the C4 of described common anode charactron holds and the 12 touch key-press is connected; Described pin 7 ground connection; Described pin 8 connects power end; Described pin 9 is held with the b of described common cathode charactron respectively, the b of described common anode charactron holds and the second touch key-press is connected; Described pin one 0 is held with the C3 of described common cathode charactron respectively, the C3 of described common anode charactron holds and the 11 touch key-press is connected; Described pin one 1 is held with the C2 of described common cathode charactron respectively, the C2 of described common anode charactron holds and the tenth touch key-press is connected; Described pin one 2 accesses the serial communication clock end of host computer; Described pin one 3 accesses the serial communication data end of host computer; Described pin one 4 is held with the f of described common cathode charactron respectively, the f of described common anode charactron holds and the 6th touch key-press is connected; Described pin one 5 is held with the C1 of described common cathode charactron respectively, the C1 of described common anode charactron holds and the 9th touch key-press is connected; Described pin one 6 is held with a of described common cathode charactron respectively, a of described common anode charactron holds and the first touch key-press is connected.
Further, the external circuits of a kind of touch recognition and digital-scroll technique integrated circuit is also provided, it is characterized in that, comprise: one 4 common cathode charactrons, one 3 common anode charactrons and are provided with the touch keyboard of 11 touch key-presss, wherein, this integrated circuit can drive described 4 common cathode charactrons and described 3 common anode charactrons, and can identify 11 touch key-presss on described touch keyboard; Described pin one is held with the e of described common cathode charactron respectively, the e of described common anode charactron holds and the 5th touch key-press is connected; Described pin two is held with the d of described common cathode charactron respectively, the d of described common anode charactron holds and the 4th touch key-press is connected; Described pin 3 is held with the DP of described common cathode charactron respectively, the DP of described common anode charactron holds and the 8th touch key-press is connected; Described pin 4 is held with the c of described common cathode charactron respectively, the c of described common anode charactron holds and the 3rd touch key-press is connected; Described pin 5 is held with the g of described common cathode charactron respectively, the g of described common anode charactron holds and the 7th touch key-press is connected; Described pin 6 is held with the C4 of described common cathode charactron and is connected, and through one first capacity earth; Described pin 7 ground connection; Described pin 8 connects power end; Described pin 9 is held with the b of described common cathode charactron respectively, the b of described common anode charactron holds and the second touch key-press is connected; Described pin one 0 is held with the C3 of described common cathode charactron respectively, the C3 of described common anode charactron holds and the 11 touch key-press is connected; Described pin one 1 is held with the C2 of described common cathode charactron respectively, the C2 of described common anode charactron holds and the tenth touch key-press is connected; Described pin one 2 accesses the serial communication clock end of host computer; Described pin one 3 accesses the serial communication data end of host computer; Described pin one 4 is held with the f of described common cathode charactron respectively, the f of described common anode charactron holds and the 6th touch key-press is connected; Described pin one 5 is held with the C1 of described common cathode charactron respectively, the C1 of described common anode charactron holds and the 9th touch key-press is connected; Described pin one 6 is held with a of described common cathode charactron respectively, a of described common anode charactron holds and the first touch key-press is connected.
Further, also provide a kind of touch recognition and number to show the access method of integrated circuit, it is characterized in that, comprising: host computer is to the write data manipulation of described integrated circuit and host computer to described integrated circuit read data operation;
Described host computer to described integrated circuit write data manipulation is: host computer starts I2C bus communication function, sends the serial communication protocol module of order 0x48 to described integrated circuit by I2C bus successively through SCL clock end and SDA data terminal; Send byte serial to be written again to 1 byte start address in serial communication protocol module; Then send successive byte string data to be written to serial communication protocol module, finally terminate I2C bus communication;
Described host computer to described integrated circuit read data operation is: host computer starts I2C communication function, the serial communication protocol module of order 0x49 to described integrated circuit is sent successively through SCL clock end and SDA data terminal by I2C bus, send byte serial to be read again to 1 byte start address in serial communication protocol module, then receive byte serial from serial communication protocol module, finally terminate I2C bus communication.
In an embodiment of the present invention, when just powering on, host computer must could access described integrated circuit after described integrated circuit resets terminates.
Compared to prior art, the present invention has following beneficial effect: touch recognition proposed by the invention and digital-scroll technique integrated circuit and external circuits thereof and access method, by touch key-press recognition function and numeral method function i ntegration on an integrated circuit, by driving charactron and identifying same group of pin of touch key-press multiplexing integrated circuit, most multipotency identification 12 touch key-presss and drive 4 common cathode charactrons, 4 common anode charactrons (or driving 64 LED); This integrated circuit can provide the design proposal of simplification for user, further saves the I/O pin of host computer, greatly saves scheme cost; In addition, this integrated circuit additionally provides the solution of authentication, reduces the design proposal of user by the possibility of flight; Meanwhile, the present invention also simplifies the access mode of this integrated circuit pointedly, has further facilitated user's control, becomes the product with some superiority.
Accompanying drawing explanation
Fig. 1 is the internal circuit configuration schematic block diagram of integrated circuit in the present invention.
Fig. 2 is the circuit theory diagrams of logical circuit in one embodiment of the invention.
Fig. 3 is the external circuits schematic diagram of integrated circuit not external capacitor in one embodiment of the invention.
Fig. 4 is the external circuits schematic diagram of integrated circuit external capacitor in another embodiment of the present invention.
Embodiment
Below in conjunction with accompanying drawing, technical scheme of the present invention is specifically described.
The invention provides a kind of touch recognition and digital-scroll technique integrated circuit, as shown in Figure 1, described integrated circuit comprises: clock generating module, reset generation module, LDO module, serial communication protocol module, chip control module, charactron and LED display module, recognition by pressing keys module and encrypting module; This integrated circuit, while possessing touch key-press recognition function, can also drive numeral method or LED display.
The first end of described clock generating module is connected with LED display module first end, described recognition by pressing keys module first end and described encrypting module first end with the first end of described serial communication protocol module, described chip control module first end, described charactron respectively.Further, in the present embodiment, described clock generating module is provided with internal oscillator and frequency division module.Internal oscillator generates automatically at this IC interior, and frequency division module connects internal oscillator, realizes frequency division to the clock frequency of oscillator, to produce the work clock of other module.
The output terminal of described reset generation module is connected with the second end of LED display module and the second end of described recognition by pressing keys module with the second end of described serial communication protocol module second end, described chip control module, the second end of described encrypting module input end, described charactron respectively; Further, in the present embodiment, described reset generation module is for controlling the reset of whole integrated circuit.After this integrated circuit powers on, this integrated circuit meeting lasts for reset a period of time, afterwards, stop resetting, host computer could access this integrated circuit after reset stops.
The output terminal of described LDO module is connected with the power end of described clock generating module and the power end of described recognition by pressing keys module respectively; Described LDO module is used for providing a burning voltage for described clock generating module and described recognition by pressing keys module;
3rd end of described serial communication protocol module is connected with the 3rd end of described chip control module; 4th end of described serial communication protocol module is connected with the 3rd end of LED display module with described charactron; The five terminal of described serial communication protocol module is connected with the 3rd end of described recognition by pressing keys module; 6th end of described serial communication protocol module is the SCL clock end of this integrated circuit, and the clock that host computer communicates through this SCL clock end incoming serial; 7th end of described serial communication protocol module is the SDA data terminal of this integrated circuit, and host computer is through the input of this SDA data terminal or the data reading serial communication.Further, the I2C(inter-integrated circuit after described serial communication protocol module uses and simplifies, lower same) agreement, being a kind of serial communication protocol of twin wire, is the communication interface of this integrated circuit and control device.By adopting compatible I2C interface, SDA, SCL communicate with host computer, related command and data are write this integrated circuit by data line SDA and clock line SCL by host computer, also by SDA data terminal, SCL clock end, the result of this integrated circuit can be read host computer.
4th end of described chip control module is connected with the 4th end of LED display module with described charactron; The five terminal of described chip control module is connected with the 4th end of described recognition by pressing keys module; 6th end of described chip control module is connected with described encrypting module the 3rd end.In the present embodiment, described chip control module for the merit controlling this integrated circuit corresponding function enable with close, workflow etc.
In the present embodiment, described charactron and LED display module are for determining the displaying contents of external charactron.Described recognition by pressing keys module is used for having identified whether external touch key-press and is pressed, and which key the key pressed is.Described encrypting module is for generation of a random data, and whether the data that user is produced by the data and encrypting module comparing software in host computer have particular kind of relationship, and to determine whether chip is certified products, thus whether certainty annuity is legal.
Further, described logical circuit is the interface of chip functions module and external devices.As depicted in figs. 1 and 2, first of described recognition by pressing keys module identifies to the 8th, end identifies that end is connected respectively to the first end of the first logical circuit to the first end of the 8th logical circuit, first output terminal to the 8th output terminal of described charactron and LED display module is connected respectively to the second end of the first logical circuit to the second end of the 8th logical circuit, and the 3rd end of described first logical circuit to the 3rd end of described 8th logical circuit respectively as the first multiplexing end of this integrated circuit to the 8th multiplexing end.In the present embodiment, described charactron and LED display module are for determining the displaying contents of external charactron.The 9th of described recognition by pressing keys module identifies to the 12, end identifies that end is connected respectively to the first end of the 9th logical circuit to the first end of the 12 logical circuit, 9th output terminal of described charactron and LED display module to corresponding second end of the second end to the 12 logical circuit being connected to the 9th logical circuit of the 12 output terminal, and the 3rd end of described 9th logical circuit to the 3rd end of described 12 logical circuit respectively as the 9th multiplexing end of this integrated circuit to the 12 multiplexing end.As shown in Figure 2, in the present embodiment, described first logical circuit to described 12 logical circuit inside includes an input logic circuit and an output logic circuit; Described input logic circuit comprises the level shifting circuit and Si Mite trigger circuit that connect successively; Described output logic circuit comprises the tristate output circuit and an ESD circuit that connect successively.By arranging the pin multiplexing technology of above-mentioned logical circuit and correspondence, for this integrated circuit, to realize corresponding pin multiplexing, namely can be connected with charactron or LED with touch key-press simultaneously and realize corresponding identification and drive function, provide necessary guarantee.
Further, as shown in Figure 3, in the present embodiment, this integrated circuit encapsulates in the following manner: pin one is port E/KEY5; Pin two is port D/KEY4; Pin 3 is port DP/KEY8; Pin 4 is port C/KEY3; Pin 5 is port G/KEY7; Pin 6 is port DIG4/KEY12; Pin 7 is port GND; Pin 8 is port VDD; Pin 9 is port B/KEY2; Pin one 0 is port DIG3/KEY11; Pin one 1 is port DIG2/KEY10; Pin one 2 is port SCL; Pin one 3 is port SDA; Pin one 4 is port F/KEY6; Pin one 5 is port DIG1/KEY9; Pin one 6 is port A/KEY1; Wherein, described pin one 6, described pin 9, described pin 4, described pin two, described pin one, described pin one 4, described pin 5 and described pin 3 are connected to the 8th multiplexing end with the first multiplexing end of this integrated circuit respectively; Described pin one 5, described pin one 1, described pin one 0 and described pin 6 are connected to the 12 multiplexing end with the 9th multiplexing end of this integrated circuit respectively.In the present embodiment, the CMOS(complementary metal oxide semiconductor (CMOS) of encapsulation employing 0.35 μm) technique, easily integrated, high finished product rate, low cost, is that a circuit is simple, economical and practical, cost is low, has the packaged chip of market outlook.And each pin is defined as follows shown in table:
Table 1
Further, in the present embodiment, the external circuits of a kind of touch recognition and digital-scroll technique integrated circuit is also provided, as shown in Figure 3, comprise: one 4 common cathode charactrons, one 4 common anode charactrons and are provided with the touch keyboard of 12 touch key-presss, wherein, this integrated circuit can drive described 4 common cathode charactrons and described 4 common anode charactrons, and can identify 12 touch key-presss on described touch keyboard; Described pin one is held with the e of described common cathode charactron respectively, the e of described common anode charactron holds and the 5th touch key-press DOT5 is connected; Described pin two is held with the d of described common cathode charactron respectively, the d of described common anode charactron holds and the 4th touch key-press key DOT4 is connected; Described pin 3 is held with the dp of described common cathode charactron respectively, the dp of described common anode charactron holds and the 8th touch key-press key DOT8 is connected; Described pin 4 is held with the c of described common cathode charactron respectively, the c of described common anode charactron holds and the 3rd touch key-press key DOT3 is connected; Described pin 5 is held with the g of described common cathode charactron respectively, the g of described common anode charactron holds and the 7th touch key-press key DOT7 is connected; Described pin 6 is held with the C4 of described common cathode charactron respectively, the C4 of described common anode charactron holds and the 12 touch key-press key DOT12 is connected; Described pin 7 ground connection; Described pin 8 connects power end; Described pin 9 is held with the b of described common cathode charactron respectively, the b of described common anode charactron holds and the second touch key-press key DOT2 is connected; Described pin one 0 is held with the C3 of described common cathode charactron respectively, the C3 of described common anode charactron holds and the 11 touch key-press key DOT11 is connected; Described pin one 1 is held with the C2 of described common cathode charactron respectively, the C2 of described common anode charactron holds and the tenth touch key-press key DOT10 is connected; Described pin one 2 accesses the serial communication clock end of host computer; Described pin one 3 accesses the serial communication data end of host computer; Described pin one 4 is held with the f of described common cathode charactron respectively, the f of described common anode charactron holds and the 6th touch key-press key DOT6 is connected; Described pin one 5 is held with the C1 of described common cathode charactron respectively, the C1 of described common anode charactron holds and the 9th touch key-press key DOT9 is connected; Described pin one 6 is held with a of described common cathode charactron respectively, a of described common anode charactron holds and the first touch key-press key DOT1 is connected.
Further, in another embodiment, the external circuits of a kind of touch recognition and digital-scroll technique integrated circuit is also provided, as shown in Figure 4, comprise: one 4 common cathode charactrons, one 3 common anode charactrons and are provided with the touch keyboard of 11 touch key-presss, wherein, this integrated circuit can drive described 4 common cathode charactrons and described 3 common anode charactrons, and can identify 11 touch key-presss on described touch keyboard; Described pin one is held with the e of described common cathode charactron respectively, the e of described common anode charactron holds and the 5th touch key-press DOT5 is connected; Described pin two is held with the d of described common cathode charactron respectively, the d of described common anode charactron holds and the 4th touch key-press DOT4 is connected; Described pin 3 is held with the DP of described common cathode charactron respectively, the DP of described common anode charactron holds and the 8th touch key-press DOT8 is connected; Described pin 4 is held with the c of described common cathode charactron respectively, the c of described common anode charactron holds and the 3rd touch key-press DOT3 is connected; Described pin 5 is held with the g of described common cathode charactron respectively, the g of described common anode charactron holds and the 7th touch key-press DOT7 is connected; Described pin 6 is held with the C4 of described common cathode charactron and is connected, and through one first electric capacity C1 ground connection, and in the present embodiment, the capacitance of the first electric capacity C1 is 10nF; Described pin 7 ground connection; Described pin 8 connects power end; Described pin 9 is held with the b of described common cathode charactron respectively, the b of described common anode charactron holds and the second touch key-press is connected; Described pin one 0 is held with the C3 of described common cathode charactron respectively, the C3 of described common anode charactron holds and the 11 touch key-press DOT11 is connected; Described pin one 1 is held with the C2 of described common cathode charactron respectively, the C2 of described common anode charactron holds and the tenth touch key-press DOT10 is connected; Described pin one 2 accesses the serial communication clock end of host computer; Described pin one 3 accesses the serial communication data end of host computer; Described pin one 4 is held with the f of described common cathode charactron respectively, the f of described common anode charactron holds and the 6th touch key-press DOT6 is connected; Described pin one 5 is held with the C1 of described common cathode charactron respectively, the C1 of described common anode charactron holds and the 9th touch key-press DOT9 is connected; Described pin one 6 is held with a of described common cathode charactron respectively, a of described common anode charactron holds and the first touch key-press DOT1 is connected.
Further, in the present embodiment, technical scheme of the present invention is more understood in order to allow those skilled in the art, also provide a kind of touch recognition and number to show the access method of integrated circuit, comprising: host computer is to the write data manipulation of described integrated circuit and host computer to described integrated circuit read data operation;
Described host computer to described integrated circuit write data manipulation is: host computer starts I2C bus communication function, sends the serial communication protocol module of order 0x48 to described integrated circuit by I2C bus successively through SCL clock end and SDA data terminal; Send byte serial to be written again to 1 byte start address in serial communication protocol module; Then send successive byte string data to be written to serial communication protocol module, finally terminate I2C bus communication;
Described host computer to described integrated circuit read data operation is: host computer starts I2C communication function, the serial communication protocol module of order 0x49 to described integrated circuit is sent successively through SCL clock end and SDA data terminal by I2C bus, send byte serial to be read again to 1 byte start address in serial communication protocol module, then receive byte serial from serial communication protocol module, finally terminate I2C bus communication.
Further, when just powering on, host computer must could access described integrated circuit after described integrated circuit resets terminates.
Be more than preferred embodiment of the present invention, all changes done according to technical solution of the present invention, when the function produced does not exceed the scope of technical solution of the present invention, all belong to protection scope of the present invention.
Claims (7)
1. a touch recognition and digital-scroll technique integrated circuit, it is characterized in that, described integrated circuit comprises: clock generating module, reset generation module, LDO module, serial communication protocol module, chip control module, charactron and LED display module, recognition by pressing keys module and encrypting module; This integrated circuit, while possessing touch key-press recognition function, can also drive numeral method or LED display;
The first end of described clock generating module is connected with LED display module first end, described recognition by pressing keys module first end and described encrypting module first end with the first end of described serial communication protocol module, described chip control module first end, described charactron respectively;
The output terminal of described reset generation module is connected with the second end of LED display module and the second end of described recognition by pressing keys module with the second end of described serial communication protocol module second end, described chip control module, the second end of described encrypting module input end, described charactron respectively;
The output terminal of described LDO module is connected with the power end of described clock generating module and the power end of described recognition by pressing keys module respectively; Described LDO module is used for providing a burning voltage for described clock generating module and described recognition by pressing keys module;
3rd end of described serial communication protocol module is connected with the 3rd end of described chip control module; 4th end of described serial communication protocol module is connected with the 3rd end of LED display module with described charactron; The five terminal of described serial communication protocol module is connected with the 3rd end of described recognition by pressing keys module; 6th end of described serial communication protocol module is the SCL clock end of this integrated circuit, and the clock that host computer communicates through this SCL clock end incoming serial; 7th end of described serial communication protocol module is the SDA data terminal of this integrated circuit, and host computer is through the input of this SDA data terminal or the data reading serial communication;
4th end of described chip control module is connected with the 4th end of LED display module with described charactron; The five terminal of described chip control module is connected with the 4th end of described recognition by pressing keys module; 6th end of described chip control module is connected with described encrypting module the 3rd end;
First of described recognition by pressing keys module identifies to the 8th, end identifies that end is connected respectively to the first end of the first logical circuit to the first end of the 8th logical circuit, first output terminal to the 8th output terminal of described charactron and LED display module is connected respectively to the second end of the first logical circuit to the second end of the 8th logical circuit, and the 3rd end of described first logical circuit to the 3rd end of described 8th logical circuit respectively as the first multiplexing end of this integrated circuit to the 8th multiplexing end;
The 9th of described recognition by pressing keys module identifies to the 12, end identifies that end is connected respectively to the first end of the 9th logical circuit to the first end of the 12 logical circuit, 9th output terminal of described charactron and LED display module to corresponding second end of the second end to the 12 logical circuit being connected to the 9th logical circuit of the 12 output terminal, and the 3rd end of described 9th logical circuit to the 3rd end of described 12 logical circuit respectively as the 9th multiplexing end of this integrated circuit to the 12 multiplexing end.
2. touch recognition according to claim 1 and digital-scroll technique integrated circuit, is characterized in that, this integrated circuit encapsulates in the following manner: pin one is port E/KEY5; Pin two is port D/KEY4; Pin 3 is port DP/KEY8; Pin 4 is port C/KEY3; Pin 5 is port G/KEY7; Pin 6 is port DIG4/KEY12; Pin 7 is port GND; Pin 8 is port VDD; Pin 9 is port B/KEY2; Pin one 0 is port DIG3/KEY11; Pin one 1 is port DIG2/KEY10; Pin one 2 is port SCL; Pin one 3 is port SDA; Pin one 4 is port F/KEY6; Pin one 5 is port DIG1/KEY9; Pin one 6 is port A/KEY1; Wherein, described pin one 6, described pin 9, described pin 4, described pin two, described pin one, described pin one 4, described pin 5 and described pin 3 are connected to the 8th multiplexing end with the first multiplexing end of this integrated circuit respectively; Described pin one 5, described pin one 1, described pin one 0 and described pin 6 are connected to the 12 multiplexing end with the 9th multiplexing end of this integrated circuit respectively.
3. touch recognition according to claim 1 and digital-scroll technique integrated circuit, is characterized in that, described first logical circuit to described 12 logical circuit inside includes an input logic circuit and an output logic circuit; Described input logic circuit comprises the level shifting circuit and Si Mite trigger circuit that connect successively; Described output logic circuit comprises the tristate output circuit and an ESD circuit that connect successively.
4. the external circuits based on touch recognition according to claim 2 and digital-scroll technique integrated circuit, it is characterized in that, comprise: one 4 common cathode charactrons, one 4 common anode charactrons and are provided with the touch keyboard of 12 touch key-presss, wherein, this integrated circuit can drive described 4 common cathode charactrons and described 4 common anode charactrons, and can identify 12 touch key-presss on described touch keyboard; Described pin one is held with the e of described common cathode charactron respectively, the e of described common anode charactron holds and the 5th touch key-press is connected; Described pin two is held with the d of described common cathode charactron respectively, the d of described common anode charactron holds and the 4th touch key-press is connected; Described pin 3 is held with the dp of described common cathode charactron respectively, the dp of described common anode charactron holds and the 8th touch key-press is connected; Described pin 4 is held with the c of described common cathode charactron respectively, the c of described common anode charactron holds and the 3rd touch key-press is connected; Described pin 5 is held with the g of described common cathode charactron respectively, the g of described common anode charactron holds and the 7th touch key-press is connected; Described pin 6 is held with the C4 of described common cathode charactron respectively, the C4 of described common anode charactron holds and the 12 touch key-press is connected; Described pin 7 ground connection; Described pin 8 connects power end; Described pin 9 is held with the b of described common cathode charactron respectively, the b of described common anode charactron holds and the second touch key-press is connected; Described pin one 0 is held with the C3 of described common cathode charactron respectively, the C3 of described common anode charactron holds and the 11 touch key-press is connected; Described pin one 1 is held with the C2 of described common cathode charactron respectively, the C2 of described common anode charactron holds and the tenth touch key-press is connected; Described pin one 2 accesses the serial communication clock end of host computer; Described pin one 3 accesses the serial communication data end of host computer; Described pin one 4 is held with the f of described common cathode charactron respectively, the f of described common anode charactron holds and the 6th touch key-press is connected; Described pin one 5 is held with the C1 of described common cathode charactron respectively, the C1 of described common anode charactron holds and the 9th touch key-press is connected; Described pin one 6 is held with a of described common cathode charactron respectively, a of described common anode charactron holds and the first touch key-press is connected.
5. the external circuits based on touch recognition according to claim 2 and digital-scroll technique integrated circuit, it is characterized in that, comprise: one 4 common cathode charactrons, one 3 common anode charactrons and are provided with the touch keyboard of 11 touch key-presss, wherein, this integrated circuit can drive described 4 common cathode charactrons and described 3 common anode charactrons, and can identify 11 touch key-presss on described touch keyboard; Described pin one is held with the e of described common cathode charactron respectively, the e of described common anode charactron holds and the 5th touch key-press is connected; Described pin two is held with the d of described common cathode charactron respectively, the d of described common anode charactron holds and the 4th touch key-press is connected; Described pin 3 is held with the DP of described common cathode charactron respectively, the DP of described common anode charactron holds and the 8th touch key-press is connected; Described pin 4 is held with the c of described common cathode charactron respectively, the c of described common anode charactron holds and the 3rd touch key-press is connected; Described pin 5 is held with the g of described common cathode charactron respectively, the g of described common anode charactron holds and the 7th touch key-press is connected; Described pin 6 is held with the C4 of described common cathode charactron and is connected, and through one first capacity earth; Described pin 7 ground connection; Described pin 8 connects power end; Described pin 9 is held with the b of described common cathode charactron respectively, the b of described common anode charactron holds and the second touch key-press is connected; Described pin one 0 is held with the C3 of described common cathode charactron respectively, the C3 of described common anode charactron holds and the 11 touch key-press is connected; Described pin one 1 is held with the C2 of described common cathode charactron respectively, the C2 of described common anode charactron holds and the tenth touch key-press is connected; Described pin one 2 accesses the serial communication clock end of host computer; Described pin one 3 accesses the serial communication data end of host computer; Described pin one 4 is held with the f of described common cathode charactron respectively, the f of described common anode charactron holds and the 6th touch key-press is connected; Described pin one 5 is held with the C1 of described common cathode charactron respectively, the C1 of described common anode charactron holds and the 9th touch key-press is connected; Described pin one 6 is held with a of described common cathode charactron respectively, a of described common anode charactron holds and the first touch key-press is connected.
6. show an access method for integrated circuit based on touch recognition according to claim 1 and number, it is characterized in that, comprising: host computer is to the write data manipulation of described integrated circuit and host computer to described integrated circuit read data operation;
Described host computer to described integrated circuit write data manipulation is: host computer starts I2C bus communication function, sends the serial communication protocol module of order 0x48 to described integrated circuit by I2C bus successively through SCL clock end and SDA data terminal; Send byte serial to be written again to 1 byte start address in serial communication protocol module; Then send successive byte string data to be written to serial communication protocol module, finally terminate I2C bus communication;
Described host computer to described integrated circuit read data operation is: host computer starts I2C communication function, the serial communication protocol module of order 0x49 to described integrated circuit is sent successively through SCL clock end and SDA data terminal by I2C bus, send byte serial to be read again to 1 byte start address in serial communication protocol module, then receive byte serial from serial communication protocol module, finally terminate I2C bus communication.
7. the access method of a kind of touch recognition according to claim 6, digital aobvious integrated circuit, it is characterized in that, when just powering on, host computer must could access described integrated circuit after described integrated circuit resets terminates.
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| CN201510215856.5A CN104808852B (en) | 2015-04-30 | 2015-04-30 | Touch recognition and digital display set are into circuit and its external circuitses and access method |
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| CN104808852B (en) | 2017-12-01 |
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