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STC12C2052 Datasheet(PDF) 23 Page - List of Unclassifed Manufacturers

Part No. STC12C2052
Description  STC12C2052AD
Download  71 Pages
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Manufacturer  ETC1 [List of Unclassifed Manufacturers]
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STC12C2052 Datasheet(HTML) 23 Page - List of Unclassifed Manufacturers

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宏晶科技:www.MCU-Memory.com   Mobile:13922805190(姚永平)   Tel:0755-82948409    Fax: 0755-82944243
宏晶科技:专业单片机 / 存储器供应商   www.MCU-Memory.com   STC12C2052AD 系列 1T 8051 单片机中文指南
23
    MOV   P1, #0FFH                  ;将 P1 口置高, 为 A/D 转换作准备
    ORL   ADC_CONTR, #80H            ;1000,0000 打开 A/D 转换电源
    MOV   P1M0, #1EH                 ;0001,1110, 用作 A/D 转换的 P1.x 口, 先设为开漏
    MOV   P1M0, #1EH                 ;0001,1110, P1.2 -- P1.5 先设为开漏
                                     ;断开内部上拉电阻
    MOV   A, #20H
    ACALL delay
    RET
;---------------------------------------------------------------------
set_P1_IO_port:                      ;P1 口设置为普通 I/O 模式
    MOV   P1M0, #00H
    MOV   P1M0, #00H
    ANL   ADC_CONTR, #7FH            ;0111,1111 关闭 A/D 转换电源
    RET
;---------------------------------------------------------------------
initiate_RS232:                      ;串口初始化
    CLR   ES                         ;禁止串口中断
    MOV   TMOD, #20H                 ;设置 T1 为波特率发生器
    MOV   SCON, #50H                 ;0101,0000 8 位数据位, 无奇偶校验
    MOV   TH1, #0FBH                 ;18.432MHz 晶振, 波特率 = 9600
    MOV   TL1, #0FBH
    CLR   RI
    SETB  TR1
    SETB  ES                         ;允许串口中断
    RET
;---------------------------------------------------------------------
Send_Byte:                           ;发送一个字节
    CLR   TI                         ;清零串口发送中断标志
    MOV   SBUF, A
Send_Byte_wait:                      ;等待发送完毕
    JNB   TI, Send_Byte_wait
    CLR   TI                         ;清零串口发送中断标志
    RET
;---------------------------------------------------------------------
delay:                               ;延时
    PUSH  02
    PUSH  03
    PUSH  04


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