User's Manual

Atmel AVR2042

8334A-AVR-05/11

Figure 5-4. User I/Os.

PB2

PB1

PB0

PB3

The LEDs are connected to PB0..2 for active-high operation. The key will pull PB3 to

GND. The key is intended to be used in combination with the internal pull-up resistor.

Table 5-5. LED/Button connection.

ATxmega256A3 I/O

PB0 (6) D1

PB1 (7) D2

PB2 (8) D3

PB3 (9) T1

To get full accessibility to all I/O pins of the Atmel ATxmega256A3, three 8-bit ports

are routed to 10-pin headers. Each header provides additional pins for VTG and

GND. Figure 5-5 shows the pin-out for a single port.

Figure 5-5. General pin-out of I/O port headers.

Table 5-6. PORTA header connection.

Header PORTA ATxmega256A3

1 PA0 (62)

2 PA1 (63)

3 PA2 (64)

4 PA3 (1)

5 PA4 (2)

6 PA5 (3)

7 PA6 (4)

8 PA7 (5)

9 GND

10 VTG