Datasheet

4317K–AVR–03/2013

AT90PWM2/3/2B/3B

3.1 Pin Descriptions

Table 3-1. Pin out description

S024 Pin

Number

SO32 Pin

Number

QFN32 Pin

Number Mnemonic Type Name, Function & Alternate Function

795GNDPowerGround: 0V reference

18 24 20 AGND Power Analog Ground: 0V reference for analog part

684VCCpowerPower Supply:

17 23 19 AVCC Power

Analog Power Supply: This is the power supply voltage for analog

part

For a normal use this pin must be connected.

19 25 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

8128PBOI/O

MISO (SPI Master In Slave Out)

PSCOUT20 output

9139PB1I/O

MOSI (SPI Master Out Slave In)

PSCOUT21 output

16 20 16 PB2 I/O

ADC5 (Analog Input Channel5 )

INT1

20 27 23 PB3 I/O AMP0- (Analog Differential Amplifier 0 Input Channel )

21 28 24 PB4 I/O AMP0+ (Analog Differential Amplifier 0 Input Channel )

22 30 26 PB5 I/O

ADC6 (Analog Input Channel 6)

INT 2

23 31 27 PB6 I/O

ADC7 (Analog Input Channel 7)

ICP1B (Timer 1 input capture alternate input)

PSCOUT11 output (see note 1)

24 32 28 PB7 I/O

PSCOUT01 output

ADC4 (Analog Input Channel 4)

SCK (SPI Clock)