Datasheet

2549O–AVR–05/12

ATmega640/1280/1281/2560/2561

13.3.11 Alternate Functions of Port L

The Port L alternate pin configuration is as follows:

• OC5C – Port L, Bit 5

OC5C, Output Compare Match C output: The PL5 pin can serve as an external output for the

Timer/Counter5 Output Compare C. The pin has to be configured as an output (DDL5 set) to

serve this function. The OC5C pin is also the output pin for the PWM mode timer function.

• OC5B – Port L, Bit 4

OC5B, Output Compare Match B output: The PL4 pin can serve as an external output for the

Timer/Counter 5 Output Compare B. The pin has to be configured as an output (DDL4 set) to

serve this function. The OC5B pin is also the output pin for the PWM mode timer function.

• OC5A – Port L, Bit 3

OC5A, Output Compare Match A output: The PL3 pin can serve as an external output for the

Timer/Counter 5 Output Compare A. The pin has to be configured as an output (DDL3 set) to

serve this function. The OC5A pin is also the output pin for the PWM mode timer function.

Table 13-32. Overriding Signals for Alternate Functions in PK3:PK0

Signal Name

PK3/ADC11/

PCINT19

PK2/ADC10/

PCINT18

PK1/ADC9/

PCINT17

PK0/ADC8/

PCINT16

PUOE0000

PUOV0000

DDOE0000

DDOV 0 0 0 0

PVOE0000

PVOV0000

PTOE––––

DIEOE PCINT19 • PCIE2 PCINT18 • PCIE2 PCINT17 • PCIE2 PCINT16 • PCIE2

DIEOV 1 1 1 1

DI PCINT19 INPUT PCINT18 INPUT PCINT17 INPUT PCINT16 INPUT

AIO ADC11 INPUT ADC10INPUT ADC9 INPUT ADC8 INPUT

Table 13-33. Port L Pins Alternate Functions

Port Pin Alternate Function

PL7 –

PL6 –

PL5 OC5C (Output Compare and PWM Output C for Timer/Counter5)

PL4 OC5B (Output Compare and PWM Output B for Timer/Counter5)

PL3 OC5A (Output Compare and PWM Output A for Timer/Counter5)

PL2 T5 (Timer/Counter5 Clock Input)