2

7799CS–AVR–12/09

ATmega8U2/16U2/32U2

1.

Pin Configurations

Figure 1-1.

Pinout

Note:

The large center pad underneath the VQFP and QFN package should be soldered to ground on

the board to ensure good mechanical stability.

1.1

Disclaimer

Typical values contained in this datasheet are based on simulations and characterization of

other AVR microcontrollers manufactured on the same process technology. Min and Max values

will be available after the device is characterized.

QFN32

(PCINT11 / AIN2 ) PC2

(OC.0B / INT0) PD0

VCC

XTAL1

PB3 (PDO / MISO / PCINT3)

GND

(PC0) XTAL2

PB4 (T1 / PCINT4)

28 27 26

1

2

3

4

5

6

7

24

23

22

21

20

19

18

12

11

10

913 14 15

(AIN0 / INT1) PD1

8

16

17

PB6 (PCINT6)

25

29

30

31

32

PB7 (PCINT7 / OC.0A / OC.1C)

PB5 (PCINT5)

PC7 (INT4 / ICP1 / CLKO)

PC6 (OC.1A / PCINT8)

Reset (PC1 / dW)

(RXD1 / AIN1 / INT2) PD2

VQFP32

(PCINT11 /AIN2 ) PC2

(OC.0B / INT0) PD0

VCC

XTAL1

PB3 (PDO / MISO / PCINT3)

GND

(PC0) XTAL2

PB4 (T1 / PCINT4)

28 27 26

1

2

3

4

5

6

7

24

23

22

21

20

19

18

12

11

10

913 14 15

(AIN0 / INT1) PD1

8

16

17

PB6 (PCINT6)

25

29

30

31

32

PB7 (PCINT7 / OC.0A / OC.1C)

PB5 (PCINT5)

PC7 (INT4 / ICP1 / CLKO)

PC6 (OC.1A / PCINT8)

Reset (PC1 / dW)

(RXD1 / AIN1 / INT2) PD2