Datasheet

Signal
Name
PB7/SCK/PCINT15 PB6/MISO/PCINT14 PB5/MOSI/PCINT13 PB4/SS/OC0B/PCINT12
DI
SCK INPUT
PCINT15 INPUT
SPI MSTR INPUT
PCINT14 INPUT
SPI SLAVE INPUT
PCINT13 INPUT
SPI SS
PCINT12 INPUT
AIO - - – –
Table 15-8. Overriding Signals for Alternate Functions in PB[3:0]
Signal
Name
PB3/AIN1/OC0A/PCINT11 PB2/AIN0/INT2/PCINT10 PB1/T1/CLKO/PCINT9 PB0/T0/XCK0/PCINT8
PUOE 0 0 0 0
PUOV 0 0 0 0
DDOE 0 0 CKOUT 0
DDOV 0 0 CKOUT 0
PVOE OC0A ENABLE 0 CKOUT 0
PVOV OC0A 0 CLK I/O 0
DIEOE PCINT11 • PCIE1
INT2 ENABLE
PCINT10 • PCIE1
PCINT9 • PCIE1 PCINT8 • PCIE1
DIEOV 1 1 1 1
DI PCINT11 INPUT
INT2 INPUT
PCINT10 INPUT
T1 INPUT
PCINT9 INPUT
T0 INPUT
PCINT8 INPUT
AIO AIN1 INPUT AIN0 INPUT – –
15.3.3. Alternate Functions of Port C
The Port C pins with alternate functions are shown in the table below:
Table 15-9. Port C Pins Alternate Functions
Port Pin Alternate Function
PC7 TOSC2 (Timer Oscillator pin 2)
PCINT23 (Pin Change Interrupt 23)
PC6 TOSC1 (Timer Oscillator pin 1)
PCINT22 (Pin Change Interrupt 22)
PC5 TDI (JTAG Test Data Input)
PCINT21 (Pin Change Interrupt 21)
PC4 TDO (JTAG Test Data Output)
PCINT20 (Pin Change Interrupt 20)
Atmel ATmega644A [DATASHEET]
Atmel-42716C-ATmega644A_Datasheet_Complete-10/2016
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