Other Headers - Atmel ATMEGA256RFR2 Xplained Pro User Manual

Pin on EXT5
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
1
Notes: Connected through cut-strap
4.1.2

Other headers

In addition to the
headers with spare signals which offers access to the I/O of the microcontroller which are otherwise not easily
available elsewhere or might be favourable to have collected toghether. All headers have a pitch of 2.54mm.
Table 4-6. SPARE ADC signals header
Pin on header
1
2
3
4
5
1
Notes: These lines are connected to the JTAG interface, and ADC will not work properly while debugging or programming the kit.
Table 4-7. SPARE signals header 2
Pin on header
1
2
3
4
5
ATmega256RFR2 pin
PE6
PD4
PD1
PD0
1
PE0
1
PE1
PD6
PB2
PB3
PB1
"I/O extension headers" on page
ATmega256RFR2
pin
-
PF4
PF5
PF6
PF7
ATmega256RFR2
pin
AREF
TST
RSTN
RSTON
CLKI
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
9, ATMEGA256RFR2 Xplained Pro has additionally two
Function Shared functionality
VCC (3.3V)
1
ADC4 JTAG Interface, TCK
1
ADC5 JTAG Interface, TMS
1
ADC6 JTAG Interface, TDO
1
ADC7 JTAG Interface, TDI
Function Shared functionality
Analog reference
Test pin for RF test
mode
Reset EDBG and RESET button
Reset status
Alternative main
clock input
Atmel ATMEGA256RFR2 Xplained Pro [USER GUIDE]
Shared functionality
EXT2 header.
EXT2 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.
EXT2 header.
All other EXT headers.
All other EXT headers.
All other EXT headers.
12
42079C-MCU-05/2013