上电有高电流存在

2万 · 2013-1-13 08:57

提示修改了设置，但上电依然有3ma的高电流存在，会不会与rem有关

2万 · 2013-1-13 08:58

还是其他原因，你们有没有这种芯片的测试数据？

只看该作者 · 2013-1-13 09:00

你再详细一点说明一下

2万 · 2013-1-13 09:01

单时钟工作76.8khz，3v工作电压，未使用rem，porte设置为输出低电平，其余端口作为输入输出，输入均有上拉，问题是上电开机瞬时电流3ma（持续200ms多），该电流与其他单片机相比太大了！

2万 · 2013-1-13 09:03

我想了解一下有没有这方面的参考数据，还是我对rem或其他方面的设置有问题？

2万 · 2013-1-13 09:05

76.8KHZ？是不是32.768KHZ？

2万 · 2013-1-13 09:06

把程序上传上来看看吧

2万 · 2013-1-13 09:07

晶体频率是76.8khz

2万 · 2013-1-13 09:09

************************************************
RESET:
;*****************************************************
; set special register and initialize
;*****************************************************
      NOP
      NOP
      LDI       SPR,00H             ;NO PULL UP
      LDI       PLCD,00H       ;LCD 1/4DUTY 1/3BIAS AND USE AS PORTC,D
      LDI       PACR,1100B       ;0:BUSY;1:SDA;2:RQS;3:SCK
      LDI       PBCR,0000B       ;0:0/ON/OFF;1:MM/INCH;2:-;3:-
      LDI       PCCR,1000B       ;3OWER CONTROL
      LDI       PDCR,1100B       ;0pt;1VP/CLR;2:WAIT;3:WORK
      LDI       PECR,0000B
      LDI       PORTE,0011B

      LDI       PORTC,1111B
      LDI       PORTB,1111B       B.3
      LDI       PORTA,0000B
      LDI       PORTD,1011B       A,PC,PD disable inter pull-up
      LDI       TEMP1,0FH       ;DELAY
      SBIM       TEMP1,01H       ;
      BNZ       $-1             ;
      LDI       PORTD,0011B       ;CLOSE

      LDI       TM0,02H
Clear_RAM:                      ;CLEAR RAM
      LDI       DPH,01H
      LDI       DPM,02H
      LDI       DPL,0FH
CR_LOOP:
      LDI       INX,00H
      SBIM       DPL,01H
      BNZ       CR_LOOP
      SBIM       DPM,01H
      SBI       DPM,07H
      BNZ       CR_LOOP
Clear_RAM1:                      ;CLEAR RAM
      LDI       DPH,00H
      LDI       DPM,07H
      LDI       DPL,0FH
CR_LOOP1:
      LDI       INX,00H
      SBIM       DPL,01H
      BNZ       CR_LOOP1
      SBIM       DPM,01H
      SBI       DPM,0010B
      BC       CR_LOOP1
      LDI       070H,00H
Clear_segments:
      LDI       TEMP1,00H
      STA       SEG1
      STA       SEG2
      STA       SEG3
      STA       SEG4
      STA       SEG5
      STA       SEG6
      STA       SEG7
      STA       SEG8
      STA       SEG9
      STA       SEG10
      STA       SEG11
      STA       SEG12
      STA       SEG13
;**********************************************
      ldi       MODE,00H
;**********************************************
      LDI       PORTB,0FH       ;
      LDA       PORTB,00H
      STA       STA_PB,00H
      BA1       $+2
      LDI       STAT0,01H       ;NO AUTO OFF
      LDA       STA_PB,00H
      BA0       $+3
      ORIM       MODE,08H
      ORIM       STAT3,01H       ;FLASH WHILE HALF SLEEPING
;**********************************************
      LDI       STA_PD,1011B       ;ON
      STA       PORTD,00H
      LDA       PORTD,00H
      BA0       $+3
      ORIM       MODE,08H
      ORIM       STAT2,02H       ;OPT FOR DISPLAY
;**********************************************
      ORIM       STAT2,08H       ;DIRECTION SELECT
;**********************************************
      ORIM       STAT0,04H       ;zero
;**********************************************
      LDI       STA_CS,05H
      LDI       TMP0,00H
      LDI       TMP1,00H
BUSY_LOW:
      LDI       PORTA,03H
      LDA       PORTA,00H
      BA0       BUSY_HIGH       ;BUSY HIGH
      ADIM       TMP0,01H
      BNC       BUSY_LOW
      ADIM       TMP1,01H
      BNC       BUSY_LOW
      ORIM       ERR,04H             ;NO BUSY
      JMP       LCD_ON
BUSY_HIGH:
      LDI       IRQ,00H
      LDI       PORTA,07H       ;RQS HIGH
      STA       ACC_BUF,00H       ;DELAY
      LDI       TEMP1,0FH       ;
      SBIM       TEMP1,01H       ;
      BNZ       $-1             ;
      LDI       PORTA,03H       ;RQS HIGH
      LDI       PARM,02H       ;DELAY       ABOUT 200MS
      CALL       Delay
LCD_ON:
      LDI       LCDON,4             ;LCD ON
;*****************************************************
; main program
;*****************************************************
MAIN:
      ...
      JMP       MAIN
END