Datasheet

31. Register Summary
Offset Name Bit Pos.
0x23 PINB 7:0 PINB7 PINB6 PINB5 PINB4 PINB3 PINB2 PINB1 PINB0
0x24 DDRB 7:0 DDRB7 DDRB6 DDRB5 DDRB4 DDRB3 DDRB2 DDRB1 DDRB0
0x25 PORTB 7:0 PORTB7 PORTB6 PORTB5 PORTB4 PORTB3 PORTB2 PORTB1 PORTB0
0x26 PINC 7:0 PINC7 PINC6 PINC5 PINC4 PINC3 PINC2 PINC1 PINC0
0x27 DDRC 7:0 DDRC7 DDRC6 DDRC5 DDRC4 DDRC3 DDRC2 DDRC1 DDRC0
0x28 PORTC 7:0 PORTC7 PORTC6 PORTC5 PORTC4 PORTC3 PORTC2 PORTC1 PORTC0
0x29 PIND 7:0 PIND7 PIND6 PIND5 PIND4 PIND3 PIND2 PIND1 PIND0
0x2A DDRD 7:0 DDRD7 DDRD6 DDRD5 DDRD4 DDRD3 DDRD2 DDRD1 DDRD0
0x2B PORTD 7:0 PORTD7 PORTD6 PORTD5 PORTD4 PORTD3 PORTD2 PORTD1 PORTD0
0x2C PINE 7:0 PINE2 PINE1 PINE0
0x2D DDRE 7:0 DDRE2 DDRE1 DDRE0
0x2E PORTE 7:0 PORTE2 PORTE1 PORTE0
0x2F
...
0x34
Reserved
0x35 TIFR0 7:0 OCFB OCFA TOV
0x36 TIFR1 7:0 ICF OCFB OCFA TOV
0x37
...
0x38
Reserved
0x39 GPIOR1 7:0 GPIOR1[7:0]
0x3A GPIOR2 7:0 GPIOR2[7:0]
0x3B PCIFR 7:0 PCIF3 PCIF2 PCIF1 PCIF0
0x3C EIFR 7:0 INTF3 INTF2 INTF1 INTF0
0x3D EIMSK 7:0 INT3 INT2 INT1 INT0
0x3E GPIOR0 7:0 GPIOR0[7:0]
0x3F EECR 7:0 EEPM1 EEPM0 EERIE EEMPE EEPE EERE
0x40 EEDR 7:0 EEDR[7:0]
0x41
EEAR
7:0 EEAR7 EEAR6 EEAR5 EEAR4 EEAR3 EEAR2 EEAR1 EEAR0
0x42 15:8 EEAR9 EEAR8
0x43 GTCCR 7:0 TSM ICPSEL1 PSRSYNC
0x44 TCCR0A 7:0 COM0A1 COM0A0 COM0B1 COM0B0 WGM01 WGM00
0x45 TCCR0B 7:0 FOC0A FOC0B WGM02 CS0[2:0]
0x46 TCNT0 7:0 TCNT0[7:0]
0x47 OCR0A 7:0 OCR0A[7:0]
0x48 OCR0B 7:0 OCR0B[7:0]
0x49 PLLCSR 7:0 PLLF PLLE PLOCK
0x4A
...
0x4B
Reserved
0x4C SPCR0 7:0 SPIE0 SPE0 DORD0 MSTR0 CPOL0 CPHA0 SPR01 SPR00
0x4D SPSR0 7:0 SPIF0 WCOL0 SPI2X0
0x4E SPDR0 7:0 SPID[7:0]
0x4F Reserved
Atmel ATmega16M1/32M1/64M1 [DATASHEET]
Atmel-8209F-ATmega16M1/32M1/64M1_Datasheet_Complete-10/2016
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