AT89C51CC02CA-RATUM datasheet(32/156 Pages) ATMEL

32 / 156 page

AT/T89C51CC02

4126J–CAN–05/06

Examples

;*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

MOV

EECON, #02h; map EEPROM in XRAM space

MOVX A, @DPTR

MOV

EECON, #00h; unmap EEPROM

; 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

MOV

EECON, #02h ; map EEPROM in XRAM space

MOVX @DPTR, A

MOVEECON, #00h; unmap EEPROM

; 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

MOV

EECON, #050h

MOV

EECON, #0A0h

; Restore EA

ret

AT89C51CC02CA-RATUM Datasheet(PDF) 32 Page - ATMEL Corporation

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