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參數(shù)資料
| 型號(hào)： | X24C01A |
| 英文描述： | Serial EEPROM(二線接口串行EEPROM) |
| 中文描述： | 串行EEPROM（二線接口串行EEPROM的） |
| 文件頁(yè)數(shù)： | 5/6頁(yè) |
| 文件大?。?/td> | 21K |
| 代理商： | X24C01A |
Xicor Application Note
AN02
AN02-5
;********************************************************************
;* PERFORM ACKNOWLEDGE POLLING TO DETERMINE WHEN THE WRITE CYCLE
;* COMPLETES. UPON RETURN FROM THIS ROUTINE THE CARRY BIT INDICATES
;* WHETHER THE DUT EVER ACKNOWLEDGED THE WRITE. CARRY=0 PART
;* ACKNOWLEDGED, CARRY=1 NO ACKNOWLEDGE RECEIVED.
;********************************************************************
ACKPOL: ld COUNT2,#80h ; MAX NUMBER OF TIMES TO CHECK THE
; PART
AKLOOP: djnz COUNT2,LOOK ; RETURN IF THE PART
jp OUTACK ; NEVER ISSUES AN ACKNOWLEDGE
LOOK: call START ; SET UP TO READ A BYTE
ld DATA1,#0A0h ; BUILD SLAVE ADDRESS
call OUTBYT ; SEND SLAVE ADDRESS
ld p2m,SDAHI ; MAKE SDA AN INPUT
call NACK ; SEE IF PART ACKNOWLEDGES
ld p2m,#00h ; MAKE SDA AN OUTPUT
jp c,AKLOOP ; LOOP IF NO ACKNOWLEDGE RECEIVED
OUTACK: call STOP ; ISSUE A STOP BEFORE RETURNING
ret
;********************************************************************
;* ISSUE A STOP COMMAND
;********************************************************************
STOP: and p2,SDALO ; SEND STOP CONDITION TO EEPROM,
; SDA LOW
or p2,SCLHI ; SCL HIGH
nop
nop
nop
nop
or p2,SDAHI ; SDA HIGH
ret
;*******************************************************************
;* ISSUE A START COMMAND
;*******************************************************************
START: or p2,SDAHI ; SEND START CONDITION TO EEPROM,
; SDA HIGH
or p2,SCLHI ; SCL HIGH
nop
nop
nop
nop
and p2,SDALO ; SDA LOW
nop
nop
nop
nop
and p2,SCLLO ; SCL LOW
ret
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| X24C01 | Serial EEPROM(二線接口串行EEPROM(128×8)) |
| X24C02(中文) | Serial EEPROM(寫(xiě)保護(hù)引腳,串行EEPROM) |
| X24C02 | Serial EEPROM(寫(xiě)保護(hù)引腳,串行EEPROM) |
| X24C04P-2.7 | Circular Connector; MIL SPEC:MIL-C-26482, Series I, Crimp; Body Material:Aluminum; Series:PT02; Number of Contacts:5; Connector Shell Size:14; Connecting Termination:Crimp; Circular Shell Style:Box Mount Receptacle |
| X24C04S14M-2.7 | 2 CHANNEL DVI SWITCH W/ AUDIO |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| X24C01AP | 制造商:XICOR 制造商全稱(chēng):Xicor Inc. 功能描述:Serial E2PROM |
| X24C01AP-3 | 制造商:ICMIC 制造商全稱(chēng):IC MICROSYSTEMS 功能描述:Serial E2PROM |
| X24C01AP-3.5 | 制造商:ICMIC 制造商全稱(chēng):IC MICROSYSTEMS 功能描述:Serial E2PROM |
| X24C01APG | 制造商:ICMIC 制造商全稱(chēng):IC MICROSYSTEMS 功能描述:Serial E2PROM |
| X24C01APG-3 | 制造商:ICMIC 制造商全稱(chēng):IC MICROSYSTEMS 功能描述:Serial E2PROM |
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