Address
Name
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Page
(0x100)
(0xFF)
(0xFE)
(0xFD)
(0xFC)
(0xFB)
(0xFA)
(0xF9)
(0xF8)
(0xF7)
(0xF6)
(0xF5)
(0xF4)
(0xF3)
(0xF2)
(0xF1)
(0xF0)
(0xEF)
(0xEE)
(0xED)
(0xEC)
(0xEB)
(0xEA)
(0xE9)
(0xE8)
(0xE7)
(0xE6)
(0xE5)
(0xE4)
(0xE3)
(0xE2)
(0xE1)
(0xE0)
(0xDF)
(0xDE)
(0xDD)
(0xDC)
(0xDB)
(0xDA)
(0xD9)
(0xD8)
(0xD7)
(0xD6)
(0xD5)
(0xD4)
(0xD3)
(0xD2)
(0xD1)
(0xD0)
(0xCF)
(0xCE)
(0xCD)
(0xCC)
(0xCB)
(0xCA)
(0xC9)
(0xC8)
(0xC7)
(0xC6)
(0xC5)
(0xC4)
(0xC3)
(0xC2)
(0xC1)
(0xC0)
(0xBF)
(0xBE)
(0xBD)
PINH
PINH7
PINH6
PINH5
PINH4
PINH3
PINH2
PINH1
PINH0
page 99
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
UDR2
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
USART2 I/O Data Register
- USART2 Baud Rate Register High Byte
page 218
page 222
page 222
UBRR2H
UBRR2L
Reserved
UCSR2C
UCSR2B
UCSR2A
Reserved
UDR1
-
-
-
USART2 Baud Rate Register Low Byte
-
-
UMSEL20
TXCIE2
TXC2
-
-
-
-
-
-
-
UMSEL21
RXCIE2
RXC2
-
UPM21
UDRIE2
UDRE2
-
UPM20
RXEN2
FE2
USBS2
TXEN2
DOR2
-
UCSZ21
UCSZ22
UPE2
-
UCSZ20
RXB82
U2X2
-
UCPOL2
TXB82
MPCM2
-
page 235
page 234
page 233
-
USART1 I/O Data Register
- USART1 Baud Rate Register High Byte
page 218
page 222
page 222
UBRR1H
UBRR1L
Reserved
UCSR1C
UCSR1B
UCSR1A
Reserved
UDR0
-
-
-
USART1 Baud Rate Register Low Byte
-
-
UMSEL10
TXCIE1
TXC1
-
-
-
-
-
-
-
UMSEL11
RXCIE1
RXC1
-
UPM11
UDRIE1
UDRE1
-
UPM10
RXEN1
FE1
USBS1
TXEN1
DOR1
-
UCSZ11
UCSZ12
UPE1
-
UCSZ10
RXB81
U2X1
-
UCPOL1
TXB81
MPCM1
-
page 235
page 234
page 233
-
USART0 I/O Data Register
- USART0 Baud Rate Register High Byte
page 218
page 222
page 222
UBRR0H
UBRR0L
Reserved
UCSR0C
UCSR0B
UCSR0A
Reserved
Reserved
TWAMR
-
-
-
USART0 Baud Rate Register Low Byte
-
UMSEL01
RXCIE0
RXC0
-
-
UMSEL00
TXCIE0
TXC0
-
-
-
UPM00
RXEN0
FE0
-
-
-
UCSZ00
RXB80
U2X0
-
-
UPM01
UDRIE0
UDRE0
-
USBS0
TXEN0
DOR0
-
UCSZ01
UCSZ02
UPE0
-
UCPOL0
page 235
page 234
page 234
TXB80
MPCM0
-
-
-
-
-
-
-
-
-
-
-
TWAM6
TWAM5
TWAM4
TWAM3
TWAM2
TWAM1
TWAM0
page 264
ATmega640/V-1280/V-1281/V-2560/V-2561/V [DATASHEET]
12
2549QS–AVR–02/2014