ATMEGA2561V ATMEL [ATMEL Corporation], ATMEGA2561V Datasheet - Page 23

• Manufacturer Part Number: ATMEGA2561V
• Description: 8-bit Microcontroller with 64K/128K/256K Bytes In-System Programmable Flash
• Manufacturer: ATMEL [ATMEL Corporation]

2549K–AVR–01/07
Note:
Assembly Code Example
C Code Example
EEPROM_write:
void EEPROM_write(unsigned int uiAddress, unsigned char ucData)
{
}
; Wait for completion of previous write
sbic EECR,EEPE
rjmp EEPROM_write
; Set up address (r18:r17) in address register
out
out
; Write data (r16) to Data Register
out
; Write logical one to EEMPE
sbi
; Start eeprom write by setting EEPE
sbi
ret
/* Wait for completion of previous write */
while(EECR & (1<<EEPE))
/* Set up address and Data Registers */
EEAR = uiAddress;
EEDR = ucData;
/* Write logical one to EEMPE */
EECR |= (1<<EEMPE);
/* Start eeprom write by setting EEPE */
EECR |= (1<<EEPE);
1. See “About Code Examples” on page 9.
;
EEARH, r18
EEARL, r17
EEDR,r16
EECR,EEMPE
EECR,EEPE
(1)
ATmega640/1280/1281/2560/2561
()
23