at89c51cc02ua-tdsum ATMEL Corporation, at89c51cc02ua-tdsum Datasheet - Page 32
at89c51cc02ua-tdsum
Manufacturer Part Number
at89c51cc02ua-tdsum
Description
At89c51cc02, T89c51cc02 Enhanced 8-bit Microcontroller With Can Controller And Flash
Manufacturer
ATMEL Corporation
Datasheet
1.AT89C51CC02UA-TDSUM.pdf
(159 pages)
- Current page: 32 of 159
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Examples
32
AT/T89C51CC02
;*F*************************************************************************
;* NAME: api_rd_eeprom_byte
;* DPTR contain address to read.
;* Acc contain the reading value
;* NOTE: before execute this function, be sure the EEPROM is not BUSY
;***************************************************************************
api_rd_eeprom_byte:
; Save and clear EA
; Restore EA
ret
;*F*************************************************************************
;* NAME: api_ld_eeprom_cl
;* DPTR contain address to load
;* Acc contain value to load
;* NOTE: in this example we load only 1 byte, but it is possible upto
;* 128 Bytes.
;* before execute this function, be sure the EEPROM is not BUSY
;***************************************************************************
api_ld_eeprom_cl:
; Save and clear EA
; Restore EA
ret
;*F*************************************************************************
;* NAME: api_wr_eeprom
;* NOTE: before execute this function, be sure the EEPROM is not BUSY
;***************************************************************************
api_wr_eeprom:
; Save and clear EA
; Restore EA
ret
MOV
MOVX A, @DPTR
MOV
MOV
MOVX @DPTR, A
MOVEECON, #00h; unmap EEPROM
MOV
MOV
EECON, #02h; map EEPROM in XRAM space
EECON, #00h; unmap EEPROM
EECON, #02h ; map EEPROM in XRAM space
EECON, #050h
EECON, #0A0h
4126L–CAN–01/08
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