Datasheet ATmega16M1, ATmega32M1, ATmega64M1 - Summary (Atmel) - 5

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1.1. Pin descriptions Table 1-1. Pinout description. QFN32 pin Mnemonic Type Name, function, and alternate function number
5 GND Power Ground: 0V reference 20 AGND Power Analog ground: 0V reference for analog part 4 VCC 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) Atmel ATmega16M1/32M1/64M1 [DATASHEET] 5 Atmel-8209F-ATmega16M1/32M1/64M1_Datasheet_Summary-10/2016 Document Outline Introduction Features Table of Contents 1. Pin configurations 1.1. Pin descriptions 2. Ordering Information 2.1. ATmega16M1 2.2. ATmega32M1 2.3. ATmega64M1 3. Overview 3.1. Block diagram 3.2. Pin descriptions 3.2.1. VCC 3.2.2. GND 3.2.3. Port B (PB7..PB0) 3.2.4. Port C (PC7..PC0) 3.2.5. Port D (PD7..PD0) 3.2.6. Port E (PE2..0) RESET/ XTAL1/XTAL2 3.2.7. AVCC 3.2.8. AREF 4. Resources 5. About code examples 6. Data retention 7. Packaging Information 7.1. 32-pin 32A 7.2. PV 32 QFN