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參數(shù)資料
| 型號(hào)： | X24C01 |
| 英文描述： | Serial EEPROM(二線(xiàn)接口串行EEPROM(128×8)) |
| 中文描述： | 串行EEPROM（二線(xiàn)接口串行EEPROM中（128 × 8）） |
| 文件頁(yè)數(shù)： | 5/6頁(yè) |
| 文件大?。?/td> | 24K |
| 代理商： | X24C01 |
Xicor Application Note
AN33
AN33-5
JSR
CMPA
BNE
PSHA
JSR
JSR
PULA
RTS
NACK
#$00
AKLOOP
SEE IF PART ACKNOWLEDGES
LOOP IF NO ACKNOWLEDGE
OUTACK:
START
STOP
SEND START
SEND STOP
************************
* ISSUE A STOP COMMAND *
************************
STOP:
BCLR
BSET
NOP
NOP
NOP
NOP
BSET
RTS
PORTD,X #SDABIT
PORTD,X #SCLBIT
MAKE SURE SDA IS LOW
BRING SCL HIGH
PROVIDE SET-UP TIME
PORTD,X #SDABIT
BRING SDA HIGH
*************************
* ISSUE A START COMMAND *
*************************
START:
BSET
BSET
BCLR
NOP
NOP
NOP
NOP
BCLR
RTS
PORTD,X #SDABIT
PORTD,X #SCLBIT
PORTD,X #SDABIT
MAKE SURE THAT SDA IS HIGH
MAKE SURE THAT SCL IS HIGH
FORCE SDA LOW
PROVIDE SET-UP TIME
PORTD,X #SCLBIT
FORCE SCL LOW
*********************************************************
* ISSUE AN ACKNOWLEDGE.
*********************************************************
*
ACK:
LDAA
STAA
BCLR
JSR
RTS
#SDAOUT
DDRD,X
PORTD,X #SDABIT
CLOCK
MAKE SDA AN OUTPUT
PERFORM AN 'ACKNOWLEDGE' WITH SDA LOW
GENERATE A CLOCK PULSE
***************************************************************
* SDA IS SET HIGH IN THE OUTBYT ROUTINE. THE ACK ROUTINE DOES *
* NOT CHECK TO SEE IF THE DUT ACTUALLY ISSUES AN ACKNOWLEDGE. *
***************************************************************
NACK:
JSR
PSHA
CLOCK
GENERATE A CLOCK PULSE
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