2

8011OS–AVR–07/10

ATmega164P/324P/644P

1.

Pin Configurations

1.1

Pinout - PDIP/TQFP/VQFN/QFN/MLF

Figure 1-1.

Pinout ATmega164P/324P/644P

Note:

The large center pad underneath the VQFN/QFN/MLF package should be soldered to ground on

the board to ensure good mechanical stability.

(PCINT8/XCK0/T0) PB0

(PCINT9/CLKO/T1) PB1

(PCINT10/INT2/AIN0) PB2

(PCINT11/OC0A/AIN1) PB3

(PCINT12/OC0B/SS) PB4

(PCINT13/MOSI) PB5

(PCINT14/MISO) PB6

(PCINT15/SCK) PB7

RESET

VCC

GND

XTAL2

XTAL1

(PCINT24/RXD0) PD0

(PCINT25/TXD0) PD1

(PCINT26/RXD1/INT0) PD2

(PCINT27/TXD1/INT1) PD3

(PCINT28/XCK1/OC1B) PD4

(PCINT29/OC1A) PD5

(PCINT30/OC2B/ICP) PD6

PA0 (ADC0/PCINT0)

PA1 (ADC1/PCINT1)

PA2 (ADC2/PCINT2)

PA3 (ADC3/PCINT3)

PA4 (ADC4/PCINT4)

PA5 (ADC5/PCINT5)

PA6 (ADC6/PCINT6)

PA7 (ADC7/PCINT7)

AREF

GND

AVCC

PC7 (TOSC2/PCINT23)

PC6 (TOSC1/PCINT22)

PC5 (TDI/PCINT21)

PC4 (TDO/PCINT20)

PC3 (TMS/PCINT19)

PC2 (TCK/PCINT18)

PC1 (SDA/PCINT17)

PC0 (SCL/PCINT16)

PD7 (OC2A/PCINT31)

PDIP

PA4 (ADC4/PCINT4)

PA5 (ADC5/PCINT5)

PA6 (ADC6/PCINT6)

PA7 (ADC7/PCINT7)

AREF

GND

AVCC

PC7 (TOSC2/PCINT23)

PC6 (TOSC1/PCINT22)

PC5 (TDI/PCINT21)

PC4 (TDO/PCINT20)

(PCINT13/MOSI) PB5

(PCINT14/MISO) PB6

(PCINT15/SCK) PB7

RESET

VCC

GND

XTAL2

XTAL1

(PCINT24/RXD0) PD0

(PCINT25/TXD0) PD1

(PCINT26/RXD1/INT0) PD2

TQFP/VQFN/QFN/MLF