Atmel ATMEGA256RFR2 Xplained Pro User Manual page 10

Pin on EXT2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
1
Notes: Connected through cut-strap
Table 4-3. Extension header EXT3
Pin on EXT3
1
2
3
4
5
6
7
8
9
10
11
12
13
14
ATmega256RFR2 pin
PE6
PD6
PD1
PD0
1
PE0
1
PE1
PD4
PB2
PB3
PB1
ATmega256RFR2 pin
PF3
PG5
PB7
PE7
PD7
PD1
PD0
1
PE0
1
PE1
Atmel ATMEGA256RFR2 Xplained Pro [USER GUIDE]
Function
GPIO / INT6
GPIO / SPI chip select B
TWI SDA
TWI SCL
UART0 RXD
UART0 TXD
GPIO / SPI chip select A
SPI MOSI
SPI MISO
SPI SCK
GND
VCC
Function
Communication line to
ID chip on extension
board.
GND
GPIO
GPIO
GPIO
GPIO / INT7
GPIO / SPI chip select B
TWI SDA
TWI SCL
UART0 RXD
UART0 TXD
Shared functionality
EXT5 header.
EXT5 header.
All other EXT headers.
All other EXT headers.
All other EXT headers.
EXT2, EXT3 and EXT5
connected through cut-
strap.
All other EXT headers.
EXT2, EXT3 and EXT5
connected through cut-
strap.
EXT5 header.
All other EXT headers.
All other EXT headers.
All other EXT headers.
Shared functionality
All other EXT headers.
All other EXT headers.
All other EXT headers.
EXT2, EXT3 and EXT5
connected through cut-
strap.
All other EXT headers.
EXT2, EXT3 and EXT5
10
42079C-MCU-05/2013