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ATMEGA640 датащи(PDF) 24 Page - Microchip Technology |
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ATMEGA640 датащи(HTML) 24 Page - Microchip Technology |
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24 / 436 page ![]() 24 ATmega640/V-1280/V-1281/V-2560/V-2561/V [DATASHEET] DS40002211A Note: 1. See “About Code Examples” on page 10. Assembly Code Example(1) EEPROM_write: ; Wait for completion of previous write sbic EECR,EEPE rjmp EEPROM_write ; Set up address (r18:r17) in address register out EEARH, r18 out EEARL, r17 ; Write data (r16) to Data Register out EEDR,r16 ; Write logical one to EEMPE sbi EECR,EEMPE ; Start eeprom write by setting EEPE sbi EECR,EEPE ret C Code Example(1) void EEPROM_write(unsigned int uiAddress, unsigned char ucData) { /* 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); } |
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