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ATMEGA165P Datasheet(PDF) 23 Page - ATMEL Corporation

Part No. ATMEGA165P
Description  8-bit AVR Microcontroller with 16K Bytes In-System Programmable Flash
Download  365 Pages
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Maker  ATMEL [ATMEL Corporation]
Homepage  http://www.atmel.com
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ATMEGA165P Datasheet(HTML) 23 Page - ATMEL Corporation

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23
8018A–AVR–03/06
ATmega165P
Assembly Code Example
EEPROM_read:
; Wait for completion of previous write
sbic
EECR,EEWE
rjmp
EEPROM_read
; Set up address (r18:r17) in address register
out
EEARH, r18
out
EEARL, r17
; Start eeprom read by writing EERE
sbi
EECR,EERE
; Read data from Data Register
in
r16,EEDR
ret
C Code Example
unsigned char
EEPROM_read(unsigned int uiAddress)
{
/* Wait for completion of previous write */
while(EECR & (1<<EEWE))
;
/* Set up address register */
EEAR = uiAddress;
/* Start eeprom read by writing EERE */
EECR |= (1<<EERE);
/* Return data from Data Register */
return EEDR;
}


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