Datasheet
342
8023F–AVR–07/09
ATmega325P/3250P
28. Register Summary
Note: Registers with bold type only available in ATmega3250P.
Address Name Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Page
(0xFF)
Reserved
- - - - - - - -
(0xFE)
Reserved - - - - - - - -
(0xFD)
Reserved - - - - - - - -
(0xFC)
Reserved - - - - - - - -
(0xFB)
Reserved - - - - - - - -
(0xFA)
Reserved - - - - - - - -
(0xF9)
Reserved - - - - - - - -
(0xF8)
Reserved - - - - - - - -
(0xF7)
Reserved - - - - - - - -
(0xF6)
Reserved - - - - - - - -
(0xF5)
Reserved - - - - - - - -
(0xF4)
Reserved - - - - - - - -
(0xF3)
Reserved - - - - - - - -
(0xF2)
Reserved - - - - - - - -
(0xF1)
Reserved - - - - - - - -
(0xF0)
Reserved - - - - - - - -
(0xEF)
Reserved - - - - - - - -
(0xEE)
Reserved - - - - - - - -
(0xED)
Reserved - - - - - - - -
(0xEC)
Reserved - - - - - - - -
(0xEB)
Reserved - - - - - - - -
(0xEA)
Reserved - - - - - - - -
(0xE9)
Reserved - - - - - - - -
(0xE8)
Reserved - - - - - - - -
(0xE7)
Reserved - - - - - - - -
(0xE6)
Reserved - - - - - - - -
(0xE5)
Reserved - - - - - - - -
(0xE4)
Reserved - - - - - - - -
(0xE3)
Reserved - - - - - - - -
(0xE2)
Reserved - - - - - - - -
(0xE1)
Reserved - - - - - - - -
(0xE0)
Reserved - - - - - - - -
(0xDF)
Reserved - - - - - - - -
(0xDE)
Reserved - - - - - - - -
(0xDD)
PORTJ - PORTJ6 PORTJ5 PORTJ4 PORTJ3 PORTJ2 PORTJ1 PORTJ0 88
(0xDC)
DDRJ - DDJ6 DDJ5 DDJ4 DDJ3 DDJ2 DDJ1 DDJ0 88
(0xDB)
PINJ
- PINJ6 PINJ5 PINJ4 PINJ3 PINJ2 PINJ1 PINJ0 88
(0xDA)
PORTH PORTH7 PORTH6 PORTH5 PORTH4 PORTH3 PORTH2 PORTH1 PORTH0 87
(0xD9)
DDRH DDH7 DDH6 DDH5 DDH4 DDH3 DDH2 DDH1 DDH0 88
(0xD8)
PINH PINH7 PINH6 PINH5 PINH4 PINH3 PINH2 PINH1 PINH0 88
(0xD7)
Reserved
- - - - - - - -
(0xD6)
Reserved
- - - - - - - -
(0xD5)
Reserved
- - - - - - - -
(0xD4)
Reserved
- - - - - - - -
(0xD3)
Reserved - - - - - - - -
(0xD2)
Reserved
- - - - - - - -
(0xD1)
Reserved
- - - - - - - -
(0xD0)
Reserved - - - - - - - -
(0xCF)
Reserved
- - - - - - - -
(0xCE)
Reserved
- - - - - - - -
(0xCD)
Reserved - - - - - - - -
(0xCC)
Reserved
- - - - - - - -
(0xCB)
Reserved - - - - - - - -
(0xCA)
Reserved
- - - - - - - -
(0xC9)
Reserved - - - - - - - -
(0xC8)
Reserved
- - - - - - - -
(0xC7)
Reserved
- - - - - - - -
(0xC6)
UDR0 USART0 Data Register 182
(0xC5)
UBRR0H
USART0 Baud Rate Register High 186