3
ATmega16M1/32M1/64M1 [DATASHEET]
8209E–AVR–11/2012
1.1
Pin descriptions
Table 1-1.
Pinout description.
QFN32 pin
number
Mnemonic
Type
Name, function, and alternate function
5GND
Power
Ground: 0V reference
20
AGND
Power
Analog ground: 0V reference for analog part
4VCC
Power
Power supply
19
AVCC
Power
Analog power supply: This is the power supply voltage for analog
part
For a normal use this pin must be connected
21
AREF
Power
Analog reference: reference for analog converter . This is the
reference voltage of the A/D converter. As output, can be used by
external analog
ISRC (Current Source Output)
8
PB0
I/O
MISO (SPI Master In Slave Out)
PSCOUT2A
(1) (PSC Module 2 Output A)
PCINT0 (Pin Change Interrupt 0)
9
PB1
I/O
MOSI (SPI Master Out Slave In)
PSCOUT2B
(1) (PSC Module 2 Output B)
PCINT1 (Pin Change Interrupt 1)
16
PB2
I/O
ADC5 (Analog Input Channel 5)
INT1 (External Interrupt 1 Input)
ACMPN0 (Analog Comparator 0 Negative Input)
PCINT2 (Pin Change Interrupt 2)
23
PB3
I/O
AMP0- (Analog Differential Amplifier 0 Negative Input)
PCINT3 (Pin Change Interrupt 3)
24
PB4
I/O
AMP0+ (Analog Differential Amplifier 0 Positive Input)
PCINT4 (Pin Change Interrupt 4)
26
PB5
I/O
ADC6 (Analog Input Channel 6)
INT2 (External Interrupt 2 Input)
ACMPN1 (Analog Comparator 1 Negative Input)
AMP2- (Analog Differential Amplifier 2 Negative Input)
PCINT5 (Pin Change Interrupt 5)
27
PB6
I/O
ADC7 (Analog Input Channel 7)
PSCOUT1B
(1) (PSC Module 1 Output A)
PCINT6 (Pin Change Interrupt 6)
28
PB7
I/O
ADC4 (Analog Input Channel 4)
PSCOUT0B
(1) (PSC Module 0 Output B)
SCK (SPI Clock)
PCINT7 (Pin Change Interrupt 7)
30
PC0
I/O
PSCOUT1A
(1) (PSC Module 1 Output A)
INT3 (External Interrupt 3 Input)
PCINT8 (Pin Change Interrupt 8)