Datasheet

ATmega164A/PA/324A/PA/644A/PA/1284/P
 2018 Microchip Technology Inc. Data Sheet Complete DS40002070A-page 87
14.3.1 Alternate Functions of Port A
The Port A pins with alternate functions are shown in Table 14-3.
• ADC7:0/PCINT7:0 – Port A, Bit 7:0
ADC7:0, Analog to Digital Converter, Channels 7:0
.
PCINT7:0, Pin Change Interrupt source 7:0: The PA7:0 pins can serve as external interrupt sources.
Table 14-4 on page 87 and Table 14-5 on page 88 relate the alternate functions of Port A to the overriding
signals shown in Figure 14-5 on page 85.
Table 14-3. Port A pins alternate functions
Port pin Alternate function
PA7
ADC7 (ADC input channel 7)
PCINT7 (Pin Change Interrupt 7)
PA6
ADC6 (ADC input channel 6)
PCINT6 (Pin Change Interrupt 6)
PA5
ADC5 (ADC input channel 5)
PCINT5 (Pin Change Interrupt 5)
PA4
ADC4 (ADC input channel 4)
PCINT4 (Pin Change Interrupt 4)
PA3
ADC3 (ADC input channel 3)
PCINT3 (Pin Change Interrupt 3)
PA2
ADC2 (ADC input channel 2)
PCINT2 (Pin Change Interrupt 2)
PA1
ADC1 (ADC input channel 1)
PCINT1 (Pin Change Interrupt 1)
PA0
ADC0 (ADC input channel 0)
PCINT0 (Pin Change Interrupt 0)
Table 14-4. Overriding Signals for Alternate Functions in PA7:PA4
Signal
name
PA7/ADC7/
PCINT7
PA6/ADC6/
PCINT6
PA5/ADC5/
PCINT5
PA4/ADC4/
PCINT4
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
PCINT7 • PCIE0 +
ADC7D
PCINT6 • PCIE0 +
ADC6D
PCINT5 • PCIE0 +
ADC5D
PCINT4 • PCIE0 +
ADC4D
DIEOV PCINT7 • PCIE0 PCINT6 • PCIE0 PCINT5 • PCIE0 PCINT4 • PCIE0
DI PCINT7 INPUT PCINT6 INPUT PCINT5 INPUT PCINT4 INPUT
AIO ADC7 INPUT ADC6 INPUT ADC5 INPUT ADC4 INPUT