Datasheet

Table 15-5. Overriding Signals for Alternate Functions in PA3...PA0
Signal
Name
PA3/ADC3/ PCINT3 PA2/ADC2/ PCINT2 PA1/ADC1/ PCINT1 PA0/ADC0/ PCINT0
PUOE 0 0 0 0
PUOV 0 0 0 0
DDOE 0 0 0 0
DDOV 0 0 0 0
PVOE 0 0 0 0
PVOV 0 0 0 0
DIEOE PCINT3 • PCIE0 +
ADC3D
PCINT2 • PCIE0 +
ADC2D
PCINT1 • PCIE0 +
ADC1D
PCINT0 • PCIE0 +
ADC0D
DIEOV PCINT3 • PCIE0 PCINT2 • PCIE0 PCINT1 • PCIE0 PCINT0 • PCIE0
DI PCINT3 INPUT PCINT2 INPUT PCINT1 INPUT PCINT0 INPUT
AIO ADC3 INPUT ADC2 INPUT ADC1 INPUT ADC0 INPUT
15.3.2. Alternate Functions of Port B
The Port B pins with alternate functions are shown in the table below:
Table 15-6. Port B Pins Alternate Functions
Port Pin Alternate Functions
PB7 SCK (SPI Bus Master clock input)
PCINT15 (Pin Change Interrupt 15)
PB6 MISO (SPI Bus Master Input/Slave Output)
PCINT14 (Pin Change Interrupt 14)
PB5 MOSI (SPI Bus Master Output/Slave Input)
PCINT13 (Pin Change Interrupt 13)
PB4 SS (SPI Slave Select input)
OC0B (Timer/Counter 0 Output Compare Match B Output)
PCINT12 (Pin Change Interrupt 12)
PB3 AIN1 (Analog Comparator Negative Input)
OC0A (Timer/Counter 0 Output Compare Match A Output)
PCINT11 (Pin Change Interrupt 11)
PB2 AIN0 (Analog Comparator Positive Input)
INT2 (External Interrupt 2 Input)
PCINT10 (Pin Change Interrupt 10)
Atmel ATmega644A [DATASHEET]
Atmel-42716C-ATmega644A_Datasheet_Complete-10/2016
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