T89C51CC01 Atmel, T89C51CC01 Datasheet - Page 34

• Manufacturer Part Number: T89C51CC01
• Description: Enhanced 8-Bit Microcontroller
• Manufacturer: Atmel

Examples
34
T89C51CC01
;*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
4129K–CAN–01/05