AT89C51CC03CA-RDTZM datasheet(39/197 Pages) ATMEL

39 / 197 page

AT89C51CC03

4182K–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:

MOV EECON, #02h; map EEPROM in XRAM space

MOVX A, @DPTR

MOV EECON, #00h; unmap EEPROM

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:

MOV EECON, #02h ; map EEPROM in XRAM space

MOVX @DPTR, A

MOVEECON, #00h; unmap EEPROM

ret

;*F*************************************************************************

;* NAME: api_wr_eeprom

;* NOTE: before execute this function, be sure the EEPROM is not BUSY

;***************************************************************************

api_wr_eeprom:

MOV EECON, #050h

MOV EECON, #0A0h

ret

AT89C51CC03CA-RDTZM Datasheet(PDF) 39 Page - ATMEL Corporation