1.8 Character Height 7-Segment LED Information Board User s Guide

Transcription

1 . Character Height -Segment LD Information Board User s Guide Sure lectronics Inc. D-DP00-Ver.0

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3 . Character Height -Segment LD Information Board User s Guide Table of contents Chapter.Overview and Main Feature Overview Part Layout Main Feature... Chapter. Hardware Description Schematic lectric Characters Port Definition segment LD Shift Register Data Driver Data Buffer... Chapter. Sample Codes LD Segment Drive Demo Board s Schematic How to Connect Load How to display data with PIC0F00 and PICC.0 environment... Chapter. Contact Us Sure lectronics Inc. D-DP00-Ver.0-page i

4 . Character Height -Segment LD Information Board User s Guide Table of contents NOTS: Product Version : Ver.0 Document Version : Ver.0 D-DP00-Ver.0-page ii Sure lectronics Inc.

5 . Character Height -Segment LD Information Board User s Guide Chapter.Overview and Main Feature digits segment panels are manufactured by Sure lectronics. This series includes different size panels, they are.inches,.inches,.inches, and inches, inches (character height). All those panels are driven by SPI like interface and all work in full static mode. They are easy to be interfaced to any Microcontrollers. They could be widely used in panel meters, big clocks and any other information display usage. Sure lectronics provides series of such information boards which are supposed to reduce your development time and make them standard. In this series, most boards are digits and static, if customer need any special digits and special size ones, could contact us with the contact information at the end of this document. The inch character height one is digit/board. This document is used to describe how to use. inches character height panels. -. Overview Figure Sure lectronics Inc. D-DP00-Ver.0-page

6 Overview and Main Feature -. Part Layout Figure Top Part Layout Figure Bottom Part Layout D-DP00-Ver.0-page Sure lectronics Inc.

7 Overview and Main Feature -. Main Feature --. digits -segment.inches LDs are installed on this panel, those segments are common anode type. --. *0pin interface for power serializing and data transferring, data inputs from J and flows out from J. --. A HC00 Nand chip is used to buffer CLK_IN and DIMM_IN control signal. --. LD driver chips are composed of pcs of HC and pcs of ULN00, they are serialized to each other, the first chip accept data from Microcontroller or the board ahead, the final chip shift data to next boards. Data should be clocked in from CLK_IN and DATA_IN in J, and DIMM_IN pin should be pull to low to enable display. ULN00 is used to drive the cathode of those led segments Sure lectronics Inc. D-DP00-Ver.0-page

8 . Character Height -Segment LD Information Board User s Guide Chapter. Hardware Description -. Schematic A0 A A A A A A0 A A A A A A A 0 A A B0 B B B B B +V B B DIMM_IN C0 DATA_IN C C C C +V C DIMM_OUT C DATA_OUT C D0 D D D B0 B B B B B B B U D0 D D D D D 0 D D D0 F COM C D G DP A B COM DIMM_OUT DATA_IN CLK_OUT DATA_OUT U ULN00 B C B C B C B C B C B C B C COM U ULN00 B C B C B C B C B C B C B C COM 0 0 R R R R R R R R R R0 R R R R R R R R R R0 R R R R R R R R D C C C D D D 0 +V C 0 C0 C C C C C C C +V UA HC00 CLK_OUT UD DIMM_OUT HC00 0 U HC SCLR QA VCC QB QC GND QD Q G QF SI QG RCK QH SCK QH' + C +V V,0uF +V 0 U0 HC SCLR QA VCC QB QC GND QD Q G QF SI QG RCK QH SCK QH' U ULN00 B C B C B C B C B C B C B C COM 0 +V + C V,0uF +V 0 U HC SCLR QA VCC QB QC GND QD Q G QF SI QG RCK QH SCK QH' U 0 D0 F COM C D G DP A B COM +V + 0V/00UF R R0 R R J 0 CON0B C 0 +V +V C 0 C 0 +V 0 U HC SCLR QA VCC QB QC GND QD Q G QF SI QG RCK QH SCK QH' CLK_OUT DIMM_IN 0 C 0 UC HC00 U ULN00 B C B C B C B C B C B C B C COM 0 J 0 CON0B CLK_IN 0 U D0 UB HC00 F COM C D G DP +V A B COM C 0 C V/00UF C 0 U M0/TO VIN VOUT GND U D0 CLK_IN F COM C D G DP A B COM U ULN00 B B B B B B B C C C C C C C COM 0 Figure Note: Because of the LD's voltage drop difference, the resistance may vary from the value marked in the schematic. D-DP00-Ver.0-page Sure lectronics Inc.

9 Hardware Description -. Physical Dimension -. Circuit Diagram Figure Figure Sure lectronics Inc. D-DP00-Ver.0-page

10 Hardware Description -. lectric Characters Figure Power Supply: DCV (LowV-HighV), 0.A/pcs (Maximum), for each additional panel, add another 0.A, if voltage is less than V, the brightness would not be enough. For over panels, user must add auxiliary power on the auxiliary power, or the 0pin communication port could not carry so much current. Maximum clock freq: MHz, boards serialized 00kHz, 0 boards serialized If the communication speed is too high, it may cause communication problems. Suggested Refresh Rate: Less than 0Hz if DIMM is not used. Less than 0Hz if DIMM is used. Drive Current/segment: 0mA +ma/-ma, this value may be changed based on the production batch, and the dot uses different current. Drive Method: Fully static. Connection Method: HC in series, SPI like interface. Maximum Cascade Level: 0 boards in series, clock less than 00kHz. Interface Voltage Level: -.V, standard CMOS level. If you need TTL/CMOS compatible interface in batch, please contact us but the quantity should be no less than 00pcs. D-DP00-Ver.0-page Sure lectronics Inc.

11 Hardware Description -. Port Definition --. -segment LD +V U U U U A0 A A A A 0 A B C D F G DP COM COM COM A A A COM A B C D F G DP 0 B0 B B B B B B B C0 C A C B C C C D C C 0 F C G DP COM COM COM COM A B C D F G DP 0 D0 D D D D D D D D0 D0 D0 D0 Figure Digits of. inches, common anode, high brightness red -segment LDs are installed on this board. They are marked as U Shift Register Data Driver +V DIMM_OUT DATA_IN CLK_OUT 0 U HC SCLR QA VCC QB QC GND QD Q G QF SI QG RCK QH SCK QH' +V 0 U HC SCLR QA VCC QB QC GND QD Q G QF SI QG RCK QH SCK QH' DATA_OUT Figure HC is used as shift register in this board. They are U, U, U0, and U, the parallel output of those HC was connected to the base of ULN00, and collector of those ULN00 was connected to the LD segments. CLK_OUT is driven by a buffered output from CLK_IN with HC00. DATA_IN is data input pin of the first HC, then all HC of cascaded boards will be serialized. All those pins accept only CMOS signals. DIMM_IN signal is for brightness control usage, you could add simple on/off or PWM signal on this signal, when this signal is set to low, all segments will light on if valid data is shifted out from the HC chip. If you are changing the data in the HCdriven chip, set this pin to low then the hash signal will not affect the display. Of course if you want to adjust the brightness of those LDs, PWM signal could be applied on the DIMM_IN pin. It is buffered with a HC00, and DIMM_IN signal will drive this board and next. Once you clock in correct data through these pins, and ensure that PWM signal or ON/OFF signal is applied correctly on the DIMM_IN pin, the board will begin display Sure lectronics Inc. D-DP00-Ver.0-page

12 Hardware Description Correspondence between Character Codes and Character Patterns: Character Patterns Character Codes Character Patterns Character Codes Character Patterns Character Codes 0 0xfc 0x0 0xda 0xf 0x 0xb 0xbe 0xe0 0xfe 0xf a b c d f g h i j 0xee 0xe 0xa 0xa 0xe 0xe 0xf 0xe 0x0 0x0 l n o p Q r s t u y 0xc 0xa 0xa 0xce 0xe 0x0a 0xb 0xe0 0x 0x --. Data Ports Definition +V DIMM_IN DATA_IN J CON0B 0 CLK_IN +V J +V +V DIMM_OUT DATA_OUT 0 CLK_OUT CON0B Figure 0 IDC sockets are located on the board. They are data input and output interface, marked as J and J. The definition is shown in Figure. When the board is working separately, connect J to the Microcontroller board and leave J open. If lots of same boards were in series, connect each board s input to another s output. Then you could connect up to 0 boards in series. Notice if over pcs of such boards were serialized, you must add auxiliary power cable to some boards to enhance the current transfer. --. Auxiliary Power Port D-DP00-Ver.0-page Sure lectronics Inc.

13 Hardware Description Figure There are auxiliary power ports on this board. If you use less than pcs of such boards in series, you could simply use a 0pin IDC flat cable to connect those boards. But if over boards connected together, you must add additional power supply to some of those boards, or the current may be lacking. Just apply +V to some boards on the AUX power port. And be sure the polarity is correct. --. Data Buffer +V CLK_IN DIMM_IN UA HC00 UC 0 HC00 UB CLK_OUT HC00 UD DIMM_OUT HC00 Figure HC00 chip is used to buffer Clock and DIMM signal in this board. A CMOS chip is not able to drive over 0pcs CMOS input if the cable is so long, here HC00 is used as NOT gate, and gates in series is a buffer Sure lectronics Inc. D-DP00-Ver.0-page

14 . Character Height -Segment LD Information Board User s Guide Chapter. Sample Codes -. LD Segment Drive Demo Board s Schematic +V U PIC0F00 VSS VDD +V DATA R ICSPDAT GP0/ICSPDAT GP/MCLR/VPP MCLR R CLK R ICSPCLK GP/ICSPCLK GP/T0CKI/FOSC R DIMM R C SW 0 SW DIP- SW POWR C 0 J CON0B J CON +V +V POWR DIMM DATA 0 POWR CLK +V MCLR ICSPDAT ICSPCLK J J CON DJ00B DN +V C + C U M0/TO VIN GND VOUT +V C + 00uF/V 0 00UF/0V Figure D-DP00-Ver.0-page Sure lectronics Inc.

15 Sample Codes -. How to Connect Load Power Supply form J or J DC V,A Input J LD Segment Drive Demo + Board - J J J.inch LD Board J 0 Pin IDC Flat Cable Figure Output Voltage ncoder Position Setting()() V +V ON V +V OFF 0V 0V Notice: () DIP switch only has the ways as shown above to work; any other switching ways are prohibited. () Users shouldn t change the voltage while LD Segment Drive Demo Board is working. It is only allowed to change it before applying the current Sure lectronics Inc. D-DP00-Ver.0-page

16 Sample Codes -. How to display data with PIC0F00 and PICC.0 environment Source code is shown below, #include <pic.h> CONFIG(UNPROTCT&MCLRDIS&WDTDIS); //Configure Word #define Fuc_key #define DIMM #define CLK #define DATA GP GP GP GP0 unsigned char disp_data; unsigned char key_pressed,last_key_pressed; unsigned char Value; unsigned char time; //The total of cathode const unsigned char Digital_TAB[] = 0xff,0xfc,0x0,0xda,0xf,0x,0xb,0xbe,0xe0,0xfe,0xf, 0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0; void change(void); void LD_data(void); void LD_display(void); void delay_ms(void) unsigned char i, j, k; for(i = 0; i < ; i++) for(j = 0; j < 00; j++) k--; void change(void) key_pressed=fuc_key; if((key_pressed==0)&(last_key_pressed==)) delay_ms(); if(key_pressed==0) disp_data++; if(disp_data==)disp_data=0; D-DP00-Ver.0-page Sure lectronics Inc.

17 Sample Codes last_key_pressed=key_pressed; void LD_data(void) unsigned char i; for(i = 0; i <; i++) if(i==disp_data)value = Digital_TAB[i]; void LD_display(void) unsigned char i; unsigned char U; U=Value; for(i = 0;i < ; i++) DATA = U & 0x0; CLK = 0; CLK = ; U = U>>; U=Value; for(i = 0;i < ; i++) DATA = U & 0x0; CLK = 0; CLK = ; U = U>>; U=Value; for(i = 0;i < ; i++) DATA = U & 0x0; CLK = 0; CLK = ; U = U>>; U=Value; for(i = 0;i < ; i++) DATA = U & 0x0; CLK = 0; CLK = ; U = U>>; Sure lectronics Inc. D-DP00-Ver.0-page

18 Sample Codes CLK = 0; CLK = ; void main(void) OSCCAL=0; TRIS = 0b000; OPTION=0b0; while() change(); LD_data(); DIMM = ; LD_display(); DIMM = 0; //Active low Output nable delay_ms(); D-DP00-Ver.0-page Sure lectronics Inc.

19 . Character Height -Segment LD Information Board User s Guide Chapter. Contact Us Sure lectronics Co., Ltd. Floor, A zone, Qinhuai Technology Innovation center, NO.0-, DaMing Road, Nanjing, China Tel: +00 mail: Website: (nglish service, from GMT-0AM, only for technical questions) support@sure-electronics.net Sure lectronics Inc. D-DP00-Ver.0-page