HT66F03 View Datasheet(PDF) - Holtek Semiconductor
Part Name
Description
Manufacturer
HT66F03 Datasheet PDF : 139 Pages
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HT66F03/HT66F04/HT68F03/HT68F04
· 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, EEDATA
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
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
BACK:
SZ IAR1.2
; check for write cycle end
JMP BACK
CLR IAR1
; disable EEPROM read/write
CLR BP
Rev. 1.00
26
April 16, 2010
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