Table 1-1.
Pin out description (Continued)
QFN32 Pin
Number
Mnemonic
Type
Name, Function and Alternate Function
PSCOUT1A (PSC Module 1 Output A)
INT3 (External Interrupt 3 Input)
PCINT8 (Pin Change Interrupt 8)
30
3
PC0
I/O
PSCIN1 (PSC Digital Input 1)
OC1B (Timer 1 Output Compare B)
SS_A (Alternate SPI Slave Select)
PCINT9 (Pin Change Interrupt 9)
PC1
PC2
PC3
I/O
I/O
I/O
T0 (Timer 0 clock input)
6
TXCAN (CAN Transmit Output)
PCINT10 (Pin Change Interrupt 10)
T1 (Timer 1 clock input)
RXCAN (CAN Receive Input)
7
ICP1B (Timer 1 input capture alternate B input)
PCINT11 (Pin Change Interrupt 11)
ADC8 (Analog Input Channel 8)
AMP1- (Analog Differential Amplifier 1 Negative Input)
ACMPN3 (Analog Comparator 3 Negative Input)
PCINT12 (Pin Change Interrupt 12)
17
PC4
I/O
ADC9 (Analog Input Channel 9)
AMP1+ (Analog Differential Amplifier 1 Positive Input)
ACMP3 (Analog Comparator 3 Positive Input)
PCINT13 (Pin Change Interrupt 13)
18
22
PC5
PC6
I/O
I/O
ADC10 (Analog Input Channel 10)
ACMP1 (Analog Comparator 1 Positive Input)
PCINT14 (Pin Change Interrupt 14)
D2A (DAC output)
25
29
32
PC7
PD0
PD1
I/O
I/O
I/O
AMP2+ (Analog Differential Amplifier 2 Positive Input)
PCINT15 (Pin Change Interrupt 15)
PSCOUT0A (PSC Module 0 Output A)
PCINT16 (Pin Change Interrupt 16)
PSCIN0 (PSC Digital Input 0)
CLKO (System Clock Output)
PCINT17 (Pin Change Interrupt 17)
OC1A (Timer 1 Output Compare A)
PSCIN2 (PSC Digital Input 2)
1
PD2
I/O
MISO_A (Programming & alternate SPI Master In Slave Out)
PCINT18 (Pin Change Interrupt 18)
Note:
1. On the first engineering samples (Parts marked AT90PWM324), the ACMPN3 alternate func-
tion is not located on PC4. It is located on PE2.
6
Atmel ATmega16/32/64/M1/C1
7647ES–AVR–07/12
ATMEL [ ATMEL ]
