首页 12864ZW中文字库液晶显示模块技术手册

12864ZW中文字库液晶显示模块技术手册

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12864ZW中文字库液晶显示模块技术手册 1 深圳叡显电子有限公司 Shenzhen Ruixian Electronics Co.,Ltd RX12864ZW TEL: 0755- 86381760 FAX: 0755- 86381499 公司地址: 深圳市南山区南光城市花园 2栋 1415 电子邮箱:topview@szruixian.com ; info@szruixian.com 网 ...

12864ZW中文字库液晶显示模块技术手册
1 深圳叡显电子有限公司 Shenzhen Ruixian Electronics Co.,Ltd RX12864ZW TEL: 0755- 86381760 FAX: 0755- 86381499 公司地址: 深圳市南山区南光城市花园 2栋 1415 电子邮箱:topview@szruixian.com ; info@szruixian.com 网 址: www.szruixian.com 液晶显示模块技术手册 2 目录 (一)概述 (二)外形尺寸 (三)模块外部接口 (四)时序说明 (五)用户指令集说明 (六)显示步骤 (七)初始化时序 (八)应用举例 3 一、概述 RX12864ZW是自带中文标准字库(控制芯片ST7920)图形点阵 液晶显示器,它主要由行驱动器/列驱动器及128X64全点阵液晶显示 器组成,可完成图形显示,也可以显示8X4个(16X16点阵汉字,与 外部CPU接口可采用串行或并行方式控制。 二、外形尺寸图 项目 参考值 LCM尺寸(长×宽×厚) 93.0×70.0×13.5 可视区域(长×宽) 72.0×40.0 点间距(长×宽) 0.52×0.52 点尺寸(长×宽 0.48×0.48 逻辑工作电压(Vdd +5.0V 或+3.3V(出厂时设定+5.0V) LCD 驱动电压(Vdd-V0) +3.0 ~ +5.0V 工作温度(Ta) 0 ~ +50℃(常温)/ -20 ~ +70℃(宽温) 储存温度(Tsto) -10 ~ +60℃(常温)/ -30 ~ +80℃(宽温) 工作电流(背光除外) 3.0mA(max) 4 三.模块外部接口 引脚 名称 方向 说明 1 VSS -- 电源负端(0V) 2 VDD -- 电源正端(+3.3V 或+5.0V,出厂时设定+5.0V) 3 V0 -- LCD 驱动电压(可调) 4 RS(CS) I 并口方式: ● RS=0: 当 MPU 进行读模块操作,指向地址计数器。 当 MPU 进行写模块操作,指向指令寄存器。 ● RS=1: 无论 MPU 读/写操作,均指向数据寄存器。 串口方式: CS:串行片选信号,高电平有效。 5 R/W(SID) I 并口方式: ● R/W=0 写操作。 ● R/W=1 读操作。 串口方式: 串行数据输入端 6 E(SCLK) I 并口方式:使能信号,高电平有效。 串口方式:串行时钟信号。 7-14 DB0~DB7 I/O MPU与模块之间并口的数据传送通道, 4 位总线模式下 D0 ~ D3脚断开 15 PSB I 串/并口控制选择端: ● H:并口控制; ● L:串口控制。 16 NC -- 空脚 17 RST I 复位脚(低电平有效) 18 VOUT -- 倍压输出脚。(VDD=+3.3V 时有效) 19 LEDA -- 背光电源正端(+3.3V 或+5.0V,出厂时设定+5.0V) 20 LEDK -- 背光电源负端(0V) 说明:LEDA与LEDK 的背光正负极性可根据客户要求进行变更: 1.使用并口驱动方式时,PSB=VDD。 2.使用串口驱动方式时,PSB=VSS,且DB0~DB7悬空不接。 3.串并口选择方式:除接口第15 脚(PSB)外,也可使用P S焊盘点(IC 面) 选择并口/串口。 4.中间与右部焊盘短路, 关于同志近三年现实表现材料材料类招标技术评分表图表与交易pdf视力表打印pdf用图表说话 pdf 示串口控制方式。 5.中间与左部焊盘短路,表示并口控制方式 5 四.时序说明 1、并口传输方式: 当 PSB脚(串/并口选择)接高电平时,模块将进入并口模式,在并口模式下可 由指令 DL FLAG 来选择 8-位或 4-位接口,主控制系统将配合( RS、RW、E、 DB0..DB7 )来达成传输动作。从一个完整的流程来看,当设定地址指令后 (CGRAM、DDRAM)若要读取数据时需先 DUMMY READ一次,才会读取到正 确数据第二次读取时则不需 DUMMY READ 除非又下设定地址指令才需再次 DUMMY READ。在 4-位传输模式中,每一个八位的指令或数据都将被分为两个 字节动作:较高 4(DB7~DB4)的资料将会被放在第一个字节(DB7~DB4)部 分,而较低 4位(DB3~DB0)的资料则会被放在第二个字节的(DB7~DB4)部 分,至于相关的另四位则在 4-位传输模式中 DB3~DB0接口未使用。相关接口传 输讯号请参考下图说明: 6 2、并行接口时序图 1)MPU写数据到液晶显示模块 2)MPU从液晶显示模块读数据 7 3)并行模式AC特性(TA=25℃,VDD=4.5V) 3、串口传输方式: 当PSB脚(串/并口选择)接低电位时,模块将进入串口模式。从一个完整的串口 传输流程来看,一开始先传输启始字节,它需先接收到五个连续的‘1’(同步 位字符串),在启始字节,此时传输计数将被重置并且串行传输将被同步,再跟 随的两个位字符串分别指定传输方向位(RW)及寄存器选择位(RS),最后第 八的位则为‘0’。在接收到同步位及RW和RS资料的启始字节后,每一个八位 的指令将被分为两个字节接收到:较高4位(DB7~DB4)的指令资料将会被放在 第一个字节的LSB部分,而较低4位(DB3~DB0)的指令资料则会被放在第二个 字节的LSB部分,至于相关的另四位则都为0。串行传输讯号请参考下图说明: 8 4、串行接口时序图: (1) MPU写数据到液晶显示模块 (2)串行模式AC特性(TA=25℃,VDD=4.5V) 9 五、用户指令集说明: 1、指令表一:(RE=0:基本指令集) 10 指令表二:(RE=1:扩充指令集) 备注说明: ● 当模块在接受指令前,微处理顺必须先确认模块内部处于非忙碌状态,即读取 BF 标志时BF需为0,方可接受新的指令;如果在送出一个指令前并不检查BF标 志,那么在前一个指令和这个指令中间必须延迟一段较长的时间,即是等待前一 个指令确实执行完成,指令执行的时间请参考指令表中的个别指令说明。 ● “RE”为基本指令集与扩充指令集的选择控制位,当变更“RE”位后,往后 的指令集将维持在最后的状态,除非再次变更“RE”位,否则使用相同指令集 时,不需每次重设“RE”位。 11 2、具体指令介绍: 基本指令(RE=0) 1) 清除显示: 功能:将DDRAM 填满”20H”(空格),把DDRAM 地址计数器调整“00H”, 重新进入点设定将I/D设为”1”,光标右移AC 加1。 2) 地址归位: 功能:把DDRAM 地址计数器调整为“00H”,光标回原点,该功能不影响显示 DDRAM 3) 点设置: 功能:设定光标移动方向并指定整体显示是否移动。 I/D=1 光标右移,AC自动加1; I/D=0 光标左移,AC自动减1。 S=1 且DDRAM为写状态:整体显示移动,方向由I/D决定(I/D=1左移, I/D=0右移) S=0 或DDRAM 为读状态:整体显示不移动. 4) 显示状态开/关: 功能:D=1: 整体显示ON ; D=0: 整体显示OFF。 C=1: 光标显示ON ; C=0: 光标显示OFF。 B=1: 光标位置反白且闪烁 ; B=0: 光标位置不反白闪烁。 5) 光标或显示移位控制: 功能:S/C:光标左/右移动,AC减/加1。 R/L:整体显示左/右移动,光标跟随移动,AC值不变。 12 6) 功能设定: 功能:DL=1: 8-BIT 控制接口; DL=0: 4-BIT 控制接口。 RE=1: 扩充指令集动作; RE=0: 基本指令集动作。 7) 设定CGRAM地址: 功能:设定CGRAM地址到地址计数器(AC),需确定扩充指令中SR=0(卷动地 址或RAM地址选择) 8) 设定DDRAM地址: 功能:设定DDRAM地址到地址计数器(AC) 9) 读取忙碌状态(BF)和地址: 功能:读取忙碌状态(BF)可以确认内部动作是否完成,同时可以读出地址计 数器(AC)的值,当BF=1,表示内部忙碌中此时不可下指令需等BF=0 才可下新指令 10) 写资料到RAM: 功能:写入资料到内部的RAM(DDRAM/CGRAM/GDRAM),每个RAM地址 都要连续写入两个字节的资料。 11) 读RAM的值: 功能:从内部RAM 读取数据(DDRAM/CGRAM/GDRAM),当设定地址指令 后,若需读取数据时需先执行一次空的读数据,才会读取到正确数据,第二次读 13 取时则不需要,除非又下设定地址指令。 扩充指令(RE=1) 1) 待命模式: 功能:进入待命模式,执行其它命令都可终止待命模式 2) 卷动地址或RAM地址选: 功能:SR=1:允许输入卷动地址; SR=0:允许设定CGRAM地址(基本指令) 3) 反白选择: 功能:选择4 行中的任一行作反白显示,并可决定反白与否。第一次设定为反白 显示,再次设定时为正常显示 注意:RX12864系列中,(根据DDRAM关系,有如下变化效果) R0=0、R1=0:为一、三行反白; R0=0、R1=1:为二、四行反白。 4)睡眠模式: 功能:SL=1:脱离睡眠模式; SL=0:进入睡眠模式。 14 5)扩充功能设定: 功能:DL=1:8-BIT 控制接口; DL=0:4-BIT 控制接口 RE=1:扩充指令集动作; RE=0:基本指令集动作 G=1:绘图显示ON; G=0:绘图显示OFF 6)卷动地址设定: 功能:SR=1,AC5~AC0 为垂直卷动地址 7)绘图RAM地址设定 功能:设定GDRAM地址到地址计数器(AC) 六、显示步骤: 1、显示资料RAM(DDRAM) 显示数据RAM 提供64×2 个字节的空间,最多可以控制4 行16个中文字型 (16×16点阵),或4行×32个字符(8×16)。当写入显示资料RAM时,可以 分别显示CGROM,HCGROM 与CGRAM 的字型;此中文字库系列模块可以显 示三种字型,分别是半宽的HCGROM 字型、自定义CGRAM 字型及中文 CGROM 字型,三种字型的选择,由DDRAM 中写入的编码选择,在0000H ~ 0006H 的编码中将选择CGRAM 的自定字型,02H ~ 7FH 的编码中将选择半宽 英数字的字型,至于A1 以上的编码将自动的结合下一个字节,组成两个字节的 编码达成中文字型 的编码简繁体中文BIG5(A140 ~ D75F),简体中文GB(A1A0 ~ F7FF),详细各 种字型编码如下: 1)显示半宽字型:将8 位资料写入DDRAM 中,范围为02H ~ 7FH 的编码。 2)显示CGRAM 字型:将16 位资料写入DDRAM 中,总共有0000H,0002H, 0004H,0006H 四种编码。 3)显示中文字形:将16 位资料写入DDRAM 中,范围为A140H ~ D75FH 的繁 体中文编码(BIG5) ,A1A0H ~ F7FFH 的简体中文编码(GB)。将16 位资料写入 15 DDRAM 方式为透过连续写入两个字节的资料来完成,先写入高字节(D15 ~D8) 再写入低字节(D7 ~ D0)。 2、绘图RAM(GDRAM) 绘图显示RAM 提供64×32 个字节的记忆空间(由扩充指令设定绘图RAM 地 址),最多可以控制256×64点的二维绘图缓冲空间,在更改绘图RAM 时,由 扩充指令设定GDRAM 地址先设垂直地址再设水平地址(连续写入两个字节的 数据来完成垂直与水平的坐标地址),再写入两个8 位的资料到绘图RAM,而 地址计数器(AC)会自动加一,整个写入绘图RAM 的步骤如下: 1)绘图清屏。 2)先将垂直的字节坐标(Y)写入绘图RAM 地址。 3)再将水平的字节坐标(X)写入绘图RAM 地址。 4)将D15 ~ D8 写入到RAM 中(写入第一个Bytes)。 5)将D7 ~ D0 写入到RAM 中(写入第二个Bytes)。 16 七、初始化时序: 1)、8位并联接口: 17 2、4位并联接口: 18 八、应用举例: //深圳叡显RX12864带中文字库ZW系列(控制器ST7920A),单片机:89S52,晶振: 12M, //并行连接方式,P3.1-RS,P3.4-RW,P3.5-E //设计:BO LIANG #include #include sbit RS=P3^1;//串口时为CS sbit RW=P3^4; //串口为SID sbit E=P3^5; //串口为时钟SCLK //sbit stop=P3^2; sbit PSB=P2^3; sbit REST=P2^4; //以下是用头文件的定义 /* #define RS P2_0 #define RW P2_1 //定义引脚 #define E P2_2 #define PSB P2_3 #define REST P2_4 #define Data P1 #include 19 */ #define BF 0x80 //用于检测LCM状态字中的Busy标识 typedef unsigned int Uint; typedef unsigned char Uchar; //字符串例子 //"F1--English",也可以往里面写入汉字码,一个汉字由两个码组成 const Uchar F1English[]={0x46,0x31,0x2d,0x2d,0x45,0x6e,0x67,0x6c,0x69,0x73,0x68, 0x00}; const Uchar lengthF1=6; //字符串长度 //汉字,直接可以写入字形 unsigned char code uctech[] = {"叡显电子有限公司"}; const Uchar lengthCF3=8; Uchar code TAB1[]={ /*-- 调入了一幅图像:C:\Documents and Settings\Administrator\桌面 \12864.bmp --*/ /*-- 宽度x高度=128x64 --*/ 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xF F,0xFF,0xFF, 0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x0 0,0x00,0x01, 0xBF,0xFF,0xFF,0xFF,0xFF,0xFF,0xC0,0x01,0xFF,0xFF,0xFF,0xFF,0xF8,0x0 0,0x00,0x01, 0xBF,0xFF,0xFF,0xFF,0xFF,0xFE,0x00,0x00,0xFF,0xFF,0xFF,0xFF,0xF8,0x0 0,0x00,0x01, 0xBF,0xFF,0xFF,0xFF,0xFF,0xF8,0x00,0x00,0x3F,0xFF,0xFF,0xFF,0xF8,0x0 0,0x00,0x01, 0xBF,0xFF,0xFF,0xFF,0xFF,0xE0,0x00,0x00,0x0F,0xFF,0xFF,0xFF,0xF8,0x0 0,0x00,0x01, 0xBF,0xFF,0xFF,0xFF,0xFF,0xC0,0x00,0x00,0x0F,0xFF,0xFF,0xFF,0xF8,0x0 0,0x00,0x01, 0xBF,0xFF,0xFF,0xFF,0xFF,0x80,0x04,0x00,0x03,0xFF,0xFF,0xFF,0xF8,0x0 0,0x00,0x01, 0xBF,0xFF,0xFF,0xFF,0xFF,0x00,0x04,0x00,0x07,0xFF,0xFF,0xFF,0xF8,0x0 0,0x00,0x01, 0xBF,0xFF,0xFF,0xFF,0xFF,0x00,0x04,0x00,0x03,0xFF,0xFF,0xFF,0xF8,0x0 0,0x00,0x01, 0xBF,0xFF,0xFF,0xFF,0xFE,0x00,0x02,0x00,0x03,0xFF,0xFF,0xFF,0xF8,0x0 0,0x00,0x01, 0xBF,0xFF,0xFF,0xFF,0xFE,0x00,0x02,0x00,0x01,0xFF,0xFF,0xFF,0xF8,0x0 0,0x00,0x01, 0xBF,0xFF,0xFF,0xFF,0xFC,0x00,0x12,0x00,0x01,0xFF,0xFF,0xFF,0xF8,0x0 0,0x00,0x01, 20 0xBF,0xFF,0xFF,0xFF,0xFC,0x00,0x12,0x00,0x00,0xFF,0xFF,0xFF,0xF8,0x0 0,0x00,0x01, 0xBF,0xFF,0xFF,0xFF,0xF8,0x00,0x32,0x00,0x00,0xFF,0xFF,0xFF,0xF8,0x0 0,0x00,0x01, 0xBF,0xFF,0xFF,0xFF,0xF8,0x00,0x22,0x00,0x00,0xFF,0xFF,0xFF,0xF8,0x0 0,0x00,0x01, 0xBF,0xFF,0xFF,0xFF,0xF8,0x00,0x33,0x00,0x00,0xFF,0xFF,0xFF,0xF8,0x0 0,0x00,0x01, 0xBF,0xFF,0xFF,0xFF,0xF8,0x00,0x63,0x00,0x00,0xFF,0xFF,0xFF,0xF8,0x0 0,0x00,0x01, 0xBF,0xFF,0xFF,0xFF,0xFC,0x00,0x61,0x80,0x00,0xFF,0xFF,0xFF,0xF8,0x0 0,0x00,0x01, 0xBF,0xFF,0xFF,0xFF,0xFC,0x00,0xE1,0x80,0x00,0xFF,0xFF,0xFF,0xF8,0x0 0,0x00,0x01, 0xBF,0xFF,0xFF,0xFF,0xFC,0x00,0xE1,0xC0,0x00,0xFF,0xFF,0xFF,0xF8,0x0 0,0x00,0x01, 0xBF,0xFF,0xFF,0xFF,0xFE,0x00,0xE1,0xC0,0x01,0xFF,0xFF,0xFF,0xF8,0x0 0,0x00,0x01, 0xBF,0xFF,0xFF,0xFF,0xFE,0x01,0xE1,0xC0,0x01,0xFF,0xFF,0xFF,0xF8,0x0 0,0x00,0x01, 0xBF,0xFF,0xFF,0xFF,0xFE,0x01,0xF1,0xE0,0x03,0xFF,0xFF,0xFF,0xF8,0x0 0,0x02,0x01, 0xBF,0xFF,0xFF,0xFF,0xFF,0x03,0xE3,0xE0,0x02,0xFF,0xFF,0xFF,0xF8,0x0 1,0xFF,0x01, 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0xBF,0xFF,0xFF,0xFF,0xE1,0x00,0x00,0x00,0x08,0xD7,0xFF,0xFF,0xF8,0x0 0,0x21,0x01, 0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x0 0,0x00,0x01, 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xF F,0xFF,0xFF, }; Uchar code TAB2[]={ /*-- 调入了一幅图像:C:\Documents and Settings\Administrator\桌面 \12864边框.bmp --*/ /*-- 宽度x高度=128x64 --*/ 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xF F,0xFF,0xFF, 0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x0 0,0x00,0x01, 0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x0 0,0x00,0x01, 0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x0 0,0x00,0x01, 0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x0 0,0x00,0x01, 0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x0 0,0x00,0x01, 0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x0 0,0x00,0x01, 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0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x0 25 0,0x00,0x01, 0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x0 0,0x00,0x01, 0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x0 0,0x00,0x01, 0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x0 0,0x00,0x01, 0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x0 0,0x00,0x01, 0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x0 0,0x00,0x01, 0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x0 0,0x00,0x01, 0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x0 0,0x00,0x01, 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xF F,0xFF,0xFF, }; //这个是在串口时指令和数据之间的延时 /* void delay10US(Uchar x) { Uchar k; for(k=0;k
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