Datasheet

ATmega169A/PA/329A/PA/649A/P/3290A/PA/6490A/P [DATASHEET]

8284E–AVR–02/2013

• OC1A/PCINT13, Bit 5

OC1A, Output Compare Match A output: The PB5 pin can serve as an external output for the Timer/Counter1 Out-

put Compare A. The pin has to be configured as an output (DDB5 set (one)) to serve this function. The OC1A pin is

also the output pin for the PWM mode timer function.

PCINT13, Pin Change Interrupt Source 13: The PB5 pin can serve as an external interrupt source.

• OC0A/PCINT12, Bit 4

OC0A, Output Compare Match A output: The PB4 pin can serve as an external output for the Timer/Counter0 Out-

put Compare A. The pin has to be configured as an output (DDB4 set (one)) to serve this function. The OC0A pin is

also the output pin for the PWM mode timer function.

PCINT12, Pin Change Interrupt Source 12: The PB4 pin can serve as an external interrupt source.

• MISO/PCINT11 – Port B, Bit 3

MISO: Master Data input, Slave Data output pin for SPI. When the SPI is enabled as a Master, this pin is config-

ured as an input regardless of the setting of DDB3. When the SPI is enabled as a Slave, the data direction of this

pin is controlled by DDB3. When the pin is forced to be an input, the pull-up can still be controlled by the PORTB3

bit.

PCINT11, Pin Change Interrupt Source 11: The PB3 pin can serve as an external interrupt source.

• MOSI/PCINT10 – Port B, Bit 2

MOSI: SPI Master Data output, Slave Data input for SPI. When the SPI is enabled as a Slave, this pin is configured

as an input regardless of the setting of DDB2. When the SPI is enabled as a Master, the data direction of this pin is

controlled by DDB2. When the pin is forced to be an input, the pull-up can still be controlled by the PORTB2 bit.

PCINT10, Pin Change Interrupt Source 10: The PB2 pin can serve as an external interrupt source.

• SCK/PCINT9 – Port B, Bit 1

SCK: Master Clock output, Slave Clock input pin for SPI. When the SPI is enabled as a Slave, this pin is configured

as an input regardless of the setting of DDB1. When the SPI is enabled as a Master, the data direction of this pin is

controlled by DDB1. When the pin is forced to be an input, the pull-up can still be controlled by the PORTB1 bit.

PCINT9, Pin Change Interrupt Source 9: The PB1 pin can serve as an external interrupt source.

•SS

/PCINT8 – Port B, Bit 0

: Slave Port Select input. When the SPI is enabled as a Slave, this pin is configured as an input regardless of

the setting of DDB0. As a Slave, the SPI is activated when this pin is driven low. When the SPI is enabled as a

Master, the data direction of this pin is controlled by DDB0. When the pin is forced to be an input, the pull-up can

still be controlled by the PORTB0 bit

PCINT8, Pin Change Interrupt Source 8: The PB0 pin can serve as an external interrupt source.