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HT68F03 датащи(PDF) 32 Page - Holtek Semiconductor Inc

номер детали HT68F03
подробное описание детали  Small Package Enhanced Flash Type 8-Bit MCU with EEPROM
PDF  147 Pages
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производитель  HOLTEK [Holtek Semiconductor Inc]
домашняя страница  http://www.holtek.com
Logo HOLTEK - Holtek Semiconductor Inc

HT68F03 датащи(HTML) 32 Page - Holtek Semiconductor Inc

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HT66F03/HT66F04/HT68F03/HT68F04
Rev. 1.30
32
February 17, 2011
· Programming Examples
¨ Reading data from the EEPROM - polling method
MOV
A, EEPROM_ADRES
; user defined address
MOV
EEA, 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
IAR1.1
; set RDEN bit, enable read operations
SET
IAR1.0
; start Read Cycle - set RD bit
BACK:
SZ
IAR1.0
; check for read cycle end
JMP
BACK
CLR
IAR1
; disable EEPROM read/write
CLR
BP
MOV
A, EED
; move read data to register
MOV
READ_DATA, A
¨ 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



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