QFN32 pin
number
Mnemonic Type Name, function, and alternate function
32 PD1 I/O PSCIN0 (PSC Digital Input 0)
CLKO (System Clock Output)
PCINT17 (Pin Change Interrupt 17)
1 PD2 I/O OC1A (Timer 1 Output Compare A)
PSCIN2 (PSC Digital Input 2)
MISO_A (Programming & alternate SPI Master In Slave Out)
PCINT18 (Pin Change Interrupt 18)
2 PD3 I/O TXD (UART Tx data)
TXLIN (LIN Transmit Output)
OC0A (Timer 0 Output Compare A)
SS (SPI Slave Select)
MOSI_A (Programming & alternate Master Out SPI Slave In)
PCINT19 (Pin Change Interrupt 19)
12 PD4 I/O ADC1 (Analog Input Channel 1)
RXD (UART Rx data)
RXLIN (LIN Receive Input)
ICP1A (Timer 1 input capture alternate A input)
SCK_A (Programming & alternate SPI Clock)
PCINT20 (Pin Change Interrupt 20)
13 PD5 I/O ADC2 (Analog Input Channel 2)
ACMP2 (Analog Comparator 2 Positive Input)
PCINT21 (Pin Change Interrupt 21)
14 PD6 I/O ADC3 (Analog Input Channel 3)
ACMPN2 (Analog Comparator 2 Negative Input)
INT0 (External Interrupt 0 Input)
PCINT22 (Pin Change Interrupt 22)
15 PD7 I/O ACMP0 (Analog Comparator 0 Positive Input)
PCINT23 (Pin Change Interrupt 23)
31 PE0 I/O or I RESET (Reset Input)
OCD (On Chip Debug I/O)
PCINT24 (Pin Change Interrupt 24)
Atmel ATmega16M1/32M1/64M1 [DATASHEET]
Atmel-8209F-ATmega16M1/32M1/64M1_Datasheet_Summary-10/2016
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