1147227416.sch

手上現(xiàn)在有個(gè)仿制的方案,遇到點(diǎn)困難,希望有能力的兄弟姐妹幫幫忙
1.問(wèn)題是LCD無(wú)法正常顯示,但是用附帶的原來(lái)的單片機(jī)放上IC坐觸發(fā)后可以顯示.初步認(rèn)為是初始程序?qū)戝e(cuò)了,不知道按這種連線應(yīng)該怎么寫(xiě)初始程序
2.我想問(wèn)寫(xiě)數(shù)據(jù)是一定要/CS口低電平情況下,依靠/WR上升沿觸發(fā)的嗎?因?yàn)橛檬静ㄆ饔^測(cè)原來(lái)的IC動(dòng)作是令/WR口工作于低電平范圍,傳輸數(shù)據(jù)時(shí)令/CS同時(shí)為0
(原理圖BZ+ BZ-是LCD背光板正負(fù))

send_data:  
            
            call     ini_1621        ;choose  1621b
            ld       lcd_bit_cnt,#1
            ld       r8,#80h
            call     send_bit
            ld       lcd_bit_cnt,#8
            ld       r8,#40h
            call     send_bit
            ld       lcd_point,#data_adr    ;#80h
            ld       lcd_byte_cnt,#16
            call     send_byte
                
send_data_ret:  
            ret
ini_1621:
            or       p2,#01000000b       ;;set   cs  
            
            and      p2,#11101111b   ;or       p2,#00010000b  ;     ;;wr  high
            nop
            nop
            or       p2,#00010000b   ;and      p2,#11101111b  ;     ;;wr  low
            nop
            nop
            ret
          
          ld      lcd_order,#bias
          call    send_com             ;1/3偏壓,4背極
          ;
         ld      lcd_order,#rc256
         call    send_com             ;rc震蕩作為系統(tǒng)時(shí)鐘
          ;
          ld      lcd_order,#wdtdis
          call    send_com             ;關(guān)閉看門(mén)狗
           ;
         ld      lcd_order,#timerdis
         call    send_com             ;時(shí)基輸出禁止
          ;
          ld      lcd_order,#sysen
          call    send_com             ;啟動(dòng)1621系統(tǒng)振蕩器
          ;
          ld      lcd_order,#lcdon
          call    send_com             ;啟動(dòng)1621顯示偏壓發(fā)生器,啟動(dòng)顯示
lcd_bit_cnt         .reg      5eh  ;發(fā)送位計(jì)數(shù)寄存器    
lcd_order           .reg      5fh  ;發(fā)送命令寄存器
lcd_point           .reg      60h  ;顯存指針      
lcd_byte_cnt        .reg      61h  ;字節(jié)計(jì)數(shù)寄存器  

data_adr            .equ      80h
Mov_1               .equ      1
Mov_2               .equ      2
Mov_3               .equ      3
bias                .equ      52h
x32k                .equ      28h
sysen               .equ      02h
lcdon               .equ      06h
wdtdis              .equ      0ah
timerdis            .equ      08h  ;
rc256               .equ      30h  ;片內(nèi)RC震蕩