Datasheet

74
8018P–AVR–08/10
ATmega169P
13.3.2 Alternate Functions of Port B
The Port B pins with alternate functions are shown in Table 13-6.
The alternate pin configuration is as follows:
• OC2A/PCINT15, Bit 7
OC2, Output Compare Match A output: The PB7 pin can serve as an external output for the
Timer/Counter2 Output Compare A. The pin has to be configured as an output (DDB7 set (one))
to serve this function. The OC2A pin is also the output pin for the PWM mode timer function.
PCINT15, Pin Change Interrupt source 15: The PB7 pin can serve as an external interrupt
source.
Table 13-5. Overriding Signals for Alternate Functions in PA3..PA0
Signal Name PA3/COM3 PA2/COM2 PA1/COM1 PA0/COM0
PUOE
LCDEN •
(LCDMUX>2)
LCDEN •
(LCDMUX>1)
LCDEN •
(LCDMUX>0)
LCDEN
PUOV0000
DDOE
LCDEN •
(LCDMUX>2)
LCDEN •
(LCDMUX>1)
LCDEN •
(LCDMUX>0)
LCDEN
DDOV 0 0 0 0
PVOE0000
PVOV0000
PTOE––––
DIEOE
LCDEN •
(LCDMUX>2)
LCDEN •
(LCDMUX>1)
LCDEN •
(LCDMUX>0)
LCDEN
DIEOV 0 0 0 0
DI––––
AIOCOM3COM2COM1COM0
Table 13-6. Port B Pins Alternate Functions
Port Pin Alternate Functions
PB7
OC2A/PCINT15
(Output Compare and PWM Output A for Timer/Counter2 or Pin Change
Interrupt15).
PB6
OC1B/PCINT
14 (Output Compare and PWM Output B for Timer/Counter1 or Pin Change
Interrupt14).
PB5
OC1A/PCINT13
(Output Compare and PWM Output A for Timer/Counter1 or Pin Change
Interrupt13).
PB4
OC0A/PCINT12
(Output Compare and PWM Output A for Timer/Counter0 or Pin Change
Interrupt12).
PB3 MISO/PCINT11
(SPI Bus Master Input/Slave Output or Pin Change Interrupt11).
PB2 MOSI/PCINT10
(SPI Bus Master Output/Slave Input or Pin Change Interrupt10).
PB1 SCK/PCINT9
(SPI Bus Serial Clock or Pin Change Interrupt9).
PB0 SS/PCINT8
(SPI Slave Select input or Pin Change Interrupt8).