Pin Descriptions - Atmel ATmega32M1 Manual

1.1

Pin Descriptions

7647H–AVR–03/12
:
Table 1-1. Pin out description
QFN32 Pin
Number Mnemonic
5 GND
20 AGND
4 VCC
19 AVCC
21 AREF
8 PB0
9 PB1
16 PB2
23 PB3
24 PB4
26 PB5
27 PB6
28 PB7
Note: 1. On the first engineering samples (Parts marked AT90PWM324), the ACMPN3 alternate
function is not located on PC4. It is located on PE2.
Atmel ATmega16/32/64/M1/C1
Type Name, Function and Alternate Function
Power Ground: 0V reference
Power Analog Ground: 0V reference for analog part
Power Power Supply
Analog Power Supply: This is the power supply voltage for
analog part
Power
For a normal use this pin must be connected.
Analog Reference : reference for analog converter . This is
the reference voltage of the A/D converter. As output, can be
Power
used by external analog
ISRC (Current Source Output)
MISO (SPI Master In Slave Out)
I/O PSCOUT2A (PSC Module 2 Output A)
PCINT0 (Pin Change Interrupt 0)
MOSI (SPI Master Out Slave In)
I/O PSCOUT2B (PSC Module 2 Output B)
PCINT1 (Pin Change Interrupt 1)
ADC5 (Analog Input Channel 5 )
INT1 (External Interrupt 1 Input)
I/O
ACMPN0 (Analog Comparator 0 Negative Input)
PCINT2 (Pin Change Interrupt 2)
AMP0- (Analog Differential Amplifier 0 Negative Input)
I/O
PCINT3 (Pin Change Interrupt 3)
AMP0+ (Analog Differential Amplifier 0 Positive Input)
I/O
PCINT4 (Pin Change Interrupt 4)
ADC6 (Analog Input Channel 6)
INT2 (External Interrupt 2 Input)
I/O ACMPN1 (Analog Comparator 1 Negative Input)
AMP2- (Analog Differential Amplifier 2 Negative Input)
PCINT5 (Pin Change Interrupt 5)
ADC7 (Analog Input Channel 7)
I/O PSCOUT1B (PSC Module 1 Output A)
PCINT6 (Pin Change Interrupt 6)
ADC4 (Analog Input Channel 4)
PSCOUT0B (PSC Module 0 Output B)
I/O
SCK (SPI Clock)
PCINT7 (Pin Change Interrupt 7)
5