HT66F016 View Datasheet(PDF) - Holtek Semiconductor
Part Name
Description
MFG CO.
'HT66F016' PDF : 116 Pages View PDF
HT66F016/HT66F017/HT68F016/HT68F017
HT66F016R/HT66F017R/HT68F016R/HT68F017R
· Programming Examples
¨ Reading data from the EEPROM - polling method
MOV A, EEPROM_ADRES
MOV EEA, A
MOV A, 040H
MOV MP1, A
MOV A, 01H
MOV BP, A
SET IAR1.1
SET IAR1.0
BACK:
SZ IAR1.0
JMP BACK
CLR IAR1
CLR BP
MOV A, EED
MOV READ_DATA, A
; user defined address
; setup memory pointer MP1
; MP1 points to EEC register
; setup Bank Pointer
; set RDEN bit, enable read operations
; start Read Cycle - set RD bit
; check for read cycle end
; disable EEPROM read/write
; move read data to register
¨ Writing Data to the EEPROM - polling method
CLR EMI
MOV A, EEPROM_ADRES
; user defined address
MOV EEA, A
MOV A, EEPROM_DATA
; user defined data
MOV EED, A
MOV A, 040H
; setup memory pointer MP1
MOV MP1, A
; MP1 points to EEC register
MOV A, 01H
; setup Bank Pointer
MOV BP, A
SET IAR1.3
; set WREN bit, enable write operations
SET IAR1.2
; Start Write Cycle - set WR bit - executed immediately
; after set WREN bit
SET EMI
BACK:
SZ IAR1.2
; check for write cycle end
JMP BACK
CLR IAR1
; disable EEPROM read/write
CLR BP
Rev. 1.40
29
November 22, 2016
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