ATmega16HVB datasheet(74/273 Pages) ATMEL

74 / 273 page

8042A–AVR–07/09

ATmega16HVB/32HVB

15.3.1

Alternate Functions of Port A

The Port A pins with alternate functions are shown in Table 15-3.

The alternate pin configuration is as follows:

• ADC0/SGND/PCINT0 - Port A, Bit0

ADC0: Voltage ADC Channel0. This pin can serve as Channel 0 Input for the Voltage ADC.

SGND: Voltage ADC Signal Ground. This pin can serve as Channel 1 Signal Ground for the

Voltage ADC.

PCINT0. Pin Change Interrupt 0. This pin can serve as external interrupt source.

• ADC1/SGND/PCINT1 - Port A, Bit1

ADC1: Voltage ADC Channel 1: This pin can serve as Channel 1 for the Voltage ADC.

SGND: Voltage ADC Signal Ground. This pin can serve as Channel 0 Signal Ground for the

Voltage ADC.

PCINT1: Pin Change Interrupt 1. This pin can serve as external interrupt source.

• T0/PCINT2 - Port A, Bit2

T0: Timer/Counter0. This pin can serve as Timer/Counter0 clock source.

PCINT2: Pin Change Interrupt 2. This pin can serve as external interrupt source.

• T1/PCINT3 - Port A, Bit3

T1: Timer/Counter1. This pin can serve as Timer/Counter1 clock source.

PCINT3: Pin Change Interrupt 3.

Table 15-3.

Port A Pins Alternate Functions

Port Pin

Alternate Function

PA3

T1/PCINT3 (Timer/Counter1 Clock Input or Pin Change Interrupt 3)

PA2

T0/PCINT2 (Timer/Counter0 Clock Input or Pin Change Interrupt 2)

PA1

ADC1/SGND/PCINT1

(ADC Input Channel 1, Signal Ground or Pin Change Interrupt 1)

PA0

ADC0/SGND/PCINT0

(ADC Input Channel 0, Signal Ground or Pin Change Interrupt 0)

ATmega16HVB Datasheet(PDF) 74 Page - ATMEL Corporation