图形点阵液晶显示模块使用手册 YM12232A I 目 录 (一) 基本特性 ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・(1) (二) 原理图 ・・・・・・・・・・・ ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・(2) (三) 限定参数 ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・(2) (四) 直流特性 ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・(2) (五) 交流特性 ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・(3) (六) 引脚特性 ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・(3) (七) 指令表 ・・・・・・・・・・・ ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・(4) (八) DDRAM 地址表 ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・(5) (九) 应用举例 ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・(5) II 一． 基本特征 1.概述 YM12232A 是一种图形点阵液晶显示器,它主要由行驱动器/列驱动器及 122×32 全点 阵液晶显示器组成。可完成图形显示，也可以显示七个半(16×16 点阵)汉字。 主要技术参数和性能： 1.电源：VDD=+2.7V～+5V；LCD 外接驱动电压 VDD-V0=5.0V。 2.显示内容：122(列)×32(行)点 3.显示颜色：绿底兰字 4.显示角度：6 点钟直视 5.STN 正视反射模式 6.驱动方式：1/32 Duty，1/6 Bias 7.工作温度：-20℃~+60℃，存储温度：-30℃~+70℃ 8.连接方式：外部接口由带缆连接 2.外形尺寸图 3.机械尺寸一览： 项目 标准尺寸 单位 模块体积 67.1×27.2×8.4 mm 视域 54.8×18.3 mm 行列点阵数 122×32 dots 点距离 0.40×0.45 mm 点大小 0.36×0.41 mm 1 二． 原理图： 三． 限定参数 Item Power supply voltage LCD driving voltage Input voltage Operating temperature range Storage temperature range 四． 直流特性： Symbol Standard Value VDD VDD~VLCD VIN Top Tst 0~+7.0 +3.5~+12.0 GND≤VIN≤VDD -20~+60 -30~+70 Unit Condition V ℃ No condition （Ta=0~40℃，VDD=2.7~6.0V） Item Power Supply LCD Driving Voltage Input High Voltage Output High Voltage Input Low Voltage Output Low Voltage Power Supply Current LCD Power Supply Current Symbol Standard Value Unit VDD VLCD VIN VOH VIL VOL IDD ILCD +2.4 ~ +6.0 ----------0.8VDD≤VIN≤VDD 0.5VDDmin 0≤VIL≤0.2VDD 0.1VDDmax 2max 220max V V V V V V mA uA 五． 交流特性 2 Signal Parameter System cycle time Address setup time A0，/RW Address hold time Data setup time Data hold time D0~D7 Output disable time Access time Enable pulse width(Read) E Enable pulse width(Write) Input wave width rise time Symbol Tcyc Taw Tah Tds Tdh Tch Tacc Tew Tr MIN 2000 40 20 160 20 20 -200 160 -- MAX -----120 180 --15 Unit ns ns ns ns ns ns Condition CL=100p F ns ns 六． 引脚特性 管脚号 1 2 3 管脚名称 VDD VSS VLCD LEVER +5.0V 0 0~+5V 管脚功能描述 4 /RET H/L 5 6 7 E1 E2 R/W H/L H/L H/L 8 D/I H/L D/I=“H”，表示 DB7∽DB0 为显示数据 D/I=“L”，表示 DB7∽DB0 为显示指令数据 9 10 11 12 13 14 15 DB0 DB1 DB2 DB3 DB4 DB5 DB6 H/L H/L H/L H/L H/L H/L H/L 数据线 数据线 数据线 数据线 数据线 数据线 数据线 电源电压 电源地 LCD 外接驱动负电压 复位信号。在系统需要硬件复位时，在/RES 端产生一个上升沿信号。当内部电路复位 后，/RES 端保持高电平。 读写使能信号(MASTER) 读写使能信号(SLAVE) 读写选择信号 3 16 17 18 DB7 NC NC H/L --- 数据线 悬空 悬空 注： ）当 VDD=+3V 时，VLCD=0~-5V 七． 指令表 INSTRCTI ON DISPLAY ON/OFF Display Start Line CODE R/W D/I D7 D6 D5 D4 D3 D2 D1 D0 0 0 1 0 1 0 1 1 1 1/0 0 0 1 1 Display start Line 0 (0・・・・31) Page Address set 0 0 1 0 1 1 1 0 PAGE: (0~3) Column Column address(0~79) 0 0 0 1 0 B u s y Write Display Data Read Display Data ADC Select 0 1 Write data 1 1 Read data 0 0 1 0 1 0 0 0 0 0/1 Static Drive ON/OFF 0 0 1 0 1 0 0 1 0 0/1 Duty Ratio Select 0 0 1 0 1 0 1 0 0 0/1 (seg) Address set Status Read A D C ON / OFF R S T 0 0 0 0 FUNCTION Switch the entire display ON or OFF，regardless of the display RAM’s Data or the internal status. 1: ON 0: OFF Determines the line of RAM data to be displayed at the display’s top line (COM0) Sets the page of the Display in the Address register(X address) Sets the column of the Display in the column address register(Y address) Read status Busy 1:insternal operation 0:Ready ADC 1:Rightward output 0:Leftward RST 1:Reseting 0:Normal ON/OFF 1:Display on 0:Display off Writes the data on the Data bus to RAM Reads data from the Display RAM onto the Data BUS Determine the clockwise or Counterclockwise reading of the display Data RAM 0: Clockwise 1: Counterclockwise Select the dynamic or static Driving. 1:Static driving 0: Dynamic driving Select the duty ratio 1:1/32 duty 0:1/16 duty 4 Read Modify Write 0 0 1 1 1 0 0 0 0 0 End 0 0 1 1 1 0 1 1 1 0 Reset 0 0 1 1 1 0 0 0 1 1 0 0 0 0 0 0 1 1 0 0 1 1 0 0 1 1 1 0 0 1 Power Save(dualco mmand) Increment the column Address register when writing. But no-change when reading. Release from the Read Modify Write Mode. Set the Display Start Line Register to 1st line, column Address count to 0 and Page Add. Resister to 0. Set the power save mode by selecting display off and static driving on 八． DDRAM 地址表 Page 2 3 0 1 Column Addr Data D0 ： D7 D0 ： D7 D0 ： D7 D0 ： D7 ADC=0 Seg No Drive Com No ： ： 122 X 16 PLXELS ： ： 122 X 16 PLXELS ： ： 122 X 16 PLXELS ： ： 122 X 16 PLXELS 00H・・・・3C 00H・・・・3C 0・・・・60 0・・・・60 Slave Master 1 ： ： 16 17 ： ： 32 Drive Slave Master 九．应用举例 YM12232A 有(1)直接访问方式和(2)间接控制方式两种 YM12232A 与单片机 8031 的直接访问接口如图 5 所示：（VDD=+5V） 5 YM12232A 与单片机 8031 的直接访问接口如图 6 所示：（VDD=+5V） 利用图 5 举例介绍编程实例 ORG 0100H INITM：MOV A，#0E2H LCALL OUTMI LCALL OUTSI MOV A，#0AEH LCALL OUTMI LCALL OUTSI MOV A，#0A4H LCALL OUTMI LCALL OUTSI MOV A，#0A9H LCALL OUTMI LCALL OUTSI MOV A，#0A0H LCALL OUTMI LCALL OUTSI MOV A，#0EEH LCALL OUTMI LCALL OUTSI MOV A，#00H LCALL OUTMI LCALL OUTSI MOV A，#0C0H LCALL OUTMI LCALL OUTSI MOV A，#0AFH LCALL OUTMI LCALL OUTSI ；DISPLAY “*” MOV R2，#0B8H DIS2：MOV A，R2 LCALL OUTMI ；RESET ；OFF DISPLAY ；OFF STATIC DRIVE ；SELECT 1/32 DUTY ；ADC SELECT RIGHTWARS OUTPUT ；READ MODIFY WRITE OFF ；COLUMN ADDRESS SET ；SET DISPLAY START LINE ；ON DISPLAY 6 LCALL OUTSI MOV A，#00H LCALL OUTMI LCALL OUTSI MOV R1，#1FH DIS1：MOV A，#55H LCALL OUTMI LCALL OUTSI MOV A，#0AAH LCALL OUTMI LCALL OUTSI DJNZ R1，DIS1 INC R2 CJNE R2，#0BCH，DIS2 LCALL MS40 LCALL MS40 LCALL MS40 LCALL MS40 MOV A，#0AFH ；DISPLAY“横条” MOV R2，#0B8H DIS3：MOV A，R2 LCALL OUTMI LCALL OUTSI MOV A，#00H LCALL OUTMI LCALL OUTSI MOV R1，#3DH DIS4：MOV A，#55H LCALL OUTMD LCALL OUTSD DJNZ R1 ，DIS4 INC R2 CJIE R2，#0BCH，DIS3 LCALL MS40 LCALL MS40 LCALL MS40 LCALL MS40 MOV A，#0AFH LCALL OUTMI LCALL OUTSI ；DISPLAY“竖条” MOV R2，#0B8H 7 DIS5：MOV A，R2 LCALL OUTMI LCALL OUTSI MOV A，#00H LCALL OUTMI LCALL OUTSI MOV R1，#1EH DIS6：MOV A，#00H LCALL OUTMI LCALL OUTSI MOV A，#0FFH LCALL OUTMI LCALL OUTSI DJNZ R1，DIS6 MOV A，#3CH LCALL OUTMI LCALL OUTSI MOV A，#00H LCALL OUTMI LCALL OUTSI INC R2 CJNE R2，#0BCH，DIS5 LCALL MS40 LCALL MS40 LCALL MS40 LCALL MS40 MOV A，#0AFH ；DISPLAY 汉字“两只黄鹂鸣翠柳 一行白鹭上青天” INITMC：MOV DPTR，#CHINESE MOV R1 #00H MOV B，#B8H DISPWORDM：PUSH B MOV A，B LCALL OUTMI LCALL OUTST MOV A，#00H LCALL OUTMI MOV R2 #7AH DISPWORD1：MOV A，R1 MOVC A，@A+DPTR LCALL OUTMD INC DPTR DEC R2 8 CJNE R2，#3DH，DISPWORD1 MOV A，#00H LCALL OUTST DISPWORD2：MOV A，R1 MOVC A，@A+DPTR LCALL OUTSD INC DPTR DJNZ R2，DISPWORD2 MOV R1，#00H POP B INC B MOV A，B CINZ A，#0BCH，DISPWORDM LCALL MS40 LCALL MS40 LCALL MS40 LCALL MS40 AJMP INITM MS40： MOV R7，#0E8H MS2： MOV R6，#0FFH MS1： DJNA R6，MS1 DJNZ R7，MS2 RET ；OUT INSTRCTION TO MASTER 6450 OUTMI：PUSH DPH PUSH DPL MOV DPTR，#6000H MOVX @DPTR，A POP DPL POP DPH RET ；OUT INSRCTION TO SLAVE 6450 OUTSI：PUSH DPH PUSH DPL MOV DPTR，#5000H MOVX @DPTR，A POP DPL POP DPH RET 9 ；OUT DATA OUTMD：PUSH PUSH MOV MOVX POP POP RET TO MASTER 6450 DPH DPL DPTR，#0E000H @DPTR，A DPL DPH ；OUT DATA OUTSD：PUSH PUSH MOV MOVX POP POP RET TO SLAVE 6450 DPH DPL DPTR，#0D000H @DPTR，A DPL DPH CHINESE：；（PAGE0） DB 00H,00H DB 00H,80H,80H,80H,80H,80H,80H,80H,80H,80H,80H,80H,80H,80H,0COH,80H,00 DB 00,00,10H,88H,0C4H,23H,40H,42H,42H,42H,42H,42H,0C2H,43H,62H,40H,00 DB 00,00,00,0F8H,08H,0CH,OAH,09H,08H,08H,08H,08H,08H,0FCH,08H,00,00 DB 00,80H,0EEH,8AH,OFAH,0AAH,0AEH,80H,24H,0E3H,0B6H,0AAH,0B6H,0E2H,20H,20H,00 DB 00,00,00,00,00,00,00,00,0FFH,20H,20H,20H,30H,20H,00,00,00 DB 00,40H,44H,54H,54H,54H,54H,54H,7FH,54H,54H,54H,54H,56H,44H,40H,00 DB 00,40H,42H,42H,42H,42H,42H,42H,0FEH,42H,42H,42H,42H,43H,62H,40H,00 0B 00 ；（PAGE1） DB 00,00 0B 00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00 DB 00,02H,01H,00,0FFH,00,00,00,00,00,40H,80H,7FH,00,00,00,00 DB 00,00,00,7FH,21H,21H,21H,21H,21H,21H,21H,21H,21H,7FH,00,00,00 DB 00,00,40H,40H,5H,52H,53H,56H,5AH,52H,5AH,56H,90H,90H,78H,10H,00 DB 00,40H,40H,40H,40H,40H,40H,40H,7FH,40H,40H,40H,40H,40H,60H,40H,00 DB 00,00,00,00,0FFH,15H,15H,15H,15H,15H,55H,95H,7FH,00,00,00,00 DB 00,80H,80H,40H,20H,10H.0CH,03H,00,03H,0CH,10H,20H,40H,0C0H,40H,00 DB 00 ；（PAGE2） DB 00,00 DB 00,02H,02H,0F2H,12H,12H,0FEH,12H,12H,12H,0FEH,12H,12H,0F2H,03H,02H,00 DB 00,00,00,00,0FCH,04H,04H,04H,04H,04H,04H,04H,0FEH,04H,00,00,00 10 DB DB DB DB DB DB 00,20H,20H,24H,24H,24H,3FH,24H,0E4H,24H,3FH,24H,24H,24H,30H,20H,00 00,04H,0E4H,24H,0E4H,04H,0E4H,26H,0E4H,00,0FCH,06H,55H,84H,7CH,00,00 00,00,0FCH,04H,04H,0FCH,04H,00,0FCH,06H,15H,44H,84H,7EH,04H,00,00 00,00,40H,41H,55H,0C9H,41H,5FH,60H,41H,55H,0C9H,41H,5FH,40H,00,00 00,10H,0D0H,0FFH,90H,10H,0FEH,02H,02H,0F9H,00,0FEH,02H,02H,0FFH,02H,00 00 ；（PAGE3） DB 00,00 DB 00,00,00,0FFH,08H,04H,03H,14H,08H,04H,03H,44H,98H,7FH,00,00,00 DB 00,00,80H,40H,23H,11H,19H,01H,01H,01H,09H,11H,23H,60H,0C0H,00,00 DB 00,00,80H,80H,5FH,55H,35H,15H,1FH,15H,35H,35H,5FH,40H,80H,00,00 DB 00,00,7FH,02H,7FH,00,7FH,02H,7FH,10H,13H,12H,1AH,52H,82H,7EH,00 DB 00,00,OFH,04H,04H,0FH,10H,10H,13H,12H,12H,1AH,52H,82,7FH,02H,00 DB 00,08H,08H,0AH,09H,08H,09H,0AH,0FCH,0AH,09H,08H,09H,0AH,08H,08H,00 DB 00,01H,00,0FFH,00,01H,8FH,44H,22H,1FH,00,0FFH,08H,10H,0FH,00,00 DB 00 11