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參數(shù)資料
| 型號(hào)： | X24C01 |
| 英文描述： | Serial EEPROM(二線接口串行EEPROM(128×8)) |
| 中文描述： | 串行EEPROM（二線接口串行EEPROM中（128 × 8）） |
| 文件頁(yè)數(shù)： | 4/6頁(yè) |
| 文件大?。?/td> | 24K |
| 代理商： | X24C01 |
Xicor Application Note
AN33
AN33-4
STAB
LDAA
STAA
RTS
DATA
#SDAOUT
DDRD,X
STORE VALUE READ INTO DATA
MAKE SDA AN OUTPUT
***********************************************************************
* WRITE 8 BITS TO THE DUT. THE DATA TO SEND IS IN DATA. IF THE LAST *
* BIT TO SEND IS A ONE THE SDA LINE IS MADE AN INPUT BEFORE THE 8TH *
* CLOCK PULSE TO AVOID BUS CONTENTION WHEN THE DUT ACKNOWLEDGES. THE *
* ROUTINE FINISHES WITH SDA IN AN INPUT STATE. *
***********************************************************************
OUTBYT:
LDAA
STAA
BCLR
LDAA
LDAB
ANDB
ANDA
BEQ
BSET
LDAA
CMPA
BNE
LDAA
STAA
BRA
BCLR
JSR
LDAA
ASLA
STAA
DEC
BNE
LDAA
STAA
RTS
#$08
COUNT
PORTD,X #SDABIT
DATA
PDDATA
#$01
#DMASK
IS0
PORTD,X #SDABIT
COUNT
#$01
IS1
#SDAIN
DDRD,X
IS1
PORTD,X #SDABIT
CLOCK
DATA
PREPARE TO SHIFT OUT 8 BITS
MAKE SDA A 0
LOOPO:
IS THE DATA TO BE SHIFTED A 1 OR A 0
JUMP IF DATA SHOULD BE 0
MAKE SDA A 1
CHECK TO SEE IF LAST BIT TO SEND
MAKE SDA AN INPUT IF A 1 IS THE LAST BIT
IS0:
IS1:
MAKE SDA A 0
SEND CLOCK SIGNAL
DATA
COUNT
LOOPO
#SDAIN
DDRD,X
LOOP UNTIL ALL 8 BITS HAVE BEEN SENT
MAKE SDA AN INPUT
************************************************************************
* PERFORM ACKNOWLEDGE POLLING TO DETERMINE WHEN THE WRITE CYCLE *
* COMPLETES. UPON RETURN FROM THIS ROUTINE THE A REGISTER INDICATES *
* WHETHER THE DUT EVER ACKNOWLEDGED THE WRITE. A=0 PART ACKNOWLEDGED, *
* A=1 NO ACKNOWLEDGE RECEIVED. *
************************************************************************
ACKPOL:
LDAA
STAA
DEC
BEQ
JSR
LDAA
STAA
JSR
#$080
COUNT2
COUNT2
OUTACK
START
#$00
DATA
OUTBYT
MAX NUMBER OF TIMES TO CHECK THE PART
AKLOOP:
RETURN IF THE PART
NEVER ISSUES AN ACKNOWLEDGE
SEND START COMMAND
SEND SLAVE ADDRESS
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| X24C01A | 制造商:ICMIC 制造商全稱:IC MICROSYSTEMS 功能描述:Serial E2PROM |
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| X24C01AP-3 | 制造商:ICMIC 制造商全稱:IC MICROSYSTEMS 功能描述:Serial E2PROM |
| X24C01AP-3.5 | 制造商:ICMIC 制造商全稱:IC MICROSYSTEMS 功能描述:Serial E2PROM |
| X24C01APG | 制造商:ICMIC 制造商全稱:IC MICROSYSTEMS 功能描述:Serial E2PROM |
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