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ATMEGA16M1-AU

8-bit AVR® Microcontroller with 16/32/64K Bytes In-System Programmable Flash

Atmel Corporation 

ATmega16M1/32M1/64M1

Table 1-1. Pin out description (Continued)

QFN32 Pin

Number

Mnemonic

Type

Name, Function & Alternate Function

ADC1 (Analog Input Channel 1)

RXD (UART Rx data)

RXLIN (LIN Receive Input)

12

PD4

I/O

ICP1A (Timer 1 input capture alternate A input)

SCK_A (Programming & alternate SPI Clock)

PCINT20 (Pin Change Interrupt 20)

ADC2 (Analog Input Channel 2)

13

PD5

I/O

ACMP2 (Analog Comparator 2 Positive Input )

PCINT21 (Pin Change Interrupt 21)

ADC3 (Analog Input Channel 3 )

ACMPN2 (Analog Comparator 2 Negative Input)

14

PD6

I/O

INT0 (External Interrupt 0 Input)

PCINT22 (Pin Change Interrupt 22)

ACMP0 (Analog Comparator 0 Positive Input )

15

PD7

I/O

PCINT23 (Pin Change Interrupt 23)

RESET (Reset Input)

31

PE0

I/O or I OCD (On Chip Debug I/O)

PCINT24 (Pin Change Interrupt 24)

XTAL1 (XTAL Input)

10

PE1

I/O

OC0B (Timer 0 Output Compare B)

PCINT25 (Pin Change Interrupt 25)

XTAL2 (XTAL Output)

11

PE2

I/O

ADC0 (Analog Input Channel 0)

PCINT26 (Pin Change Interrupt 26)

Note: 1. Only for Atmega32M1/64M1.

2. On the engineering samples, the ACMPN3 alternate function is not located on PC4. It is

located on PE2.

2. Overview

The ATmega16M1/32M1/64M1 is a low-power CMOS 8-bit microcontroller based on the AVR

enhanced RISC architecture. By executing powerful instructions in a single clock cycle, the

ATmega16M1/32M1/64M1 achieves throughputs approaching 1 MIPS per MHz allowing the

system designer to optimize power consumption versus processing speed.

5

8209C–AVR–05/10

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