Rainbow-electronics ATmega128RFA1 Manual de usuario descargar pdf (Pagina 193)

193

8266A-MCU Wireless-12/09

ATmega128RFA1

Table 14-3. Port B Pins Alternate Functions

Port Pin Alternate Functions

PB7 OC0A/OC1C/PCINT7 (Output Compare and PWM Output A for

Timer/Counter0, Output Compare and PWM Output C for Timer/Counter1 or

Pin Change Interrupt 7)

PB6 OC1B/PCINT6 (Output Compare and PWM Output B for Timer/Counter1 or

Pin Change Interrupt 6)

PB5 OC1A/PCINT5 (Output Compare and PWM Output A for Timer/Counter1 or

Pin Change Interrupt 5)

PB4 OC2A/PCINT4 (Output Compare and PWM Output A for Timer/Counter2 or

Pin Change Interrupt 4)

PB3 MISO/PDO/PCINT3 (SPI Bus Master Input/Slave Output, Programming Data

Output or Pin Change Interrupt 3)

PB2 MOSI/PDI/PCINT2 (SPI Bus Master Output/Slave Input , Programming Data

Input or Pin Change Interrupt 2)

PB1 SCK/PCINT1 (SPI Bus Serial Clock or Pin Change Interrupt 1)

PB0 SS¯ ¯ /PCINT0 (SPI Slave Select input or Pin Change Interrupt 0)

The alternate pin configuration is as follows:

• OC0A/OC1C/PCINT7, Bit 7

OC0A, Output Compare Match A output: The PB7 pin can serve as an external output

for the Timer/Counter0 Output Compare. The pin has to be configured as an output

(DDB7 set “one”) to serve this function. The OC0A pin is also the output pin for the

PWM mode timer function.

OC1C, Output Compare Match C output: The PB7 pin can serve as an external output

for the Timer/Counter1 Output Compare C. The pin has to be configured as an output

(DDB7 set (one)) to serve this function. The OC1C pin is also the output pin for the

PWM mode timer function.

PCINT7, Pin Change Interrupt source 7: The PB7 pin can serve as an external interrupt

source.

• OC1B/PCINT6, Bit 6

OC1B, Output Compare Match B output: The PB6 pin can serve as an external output

for the Timer/Counter1 Output Compare B. The pin has to be configured as an output

(DDB6 set (one)) to serve this function. The OC1B pin is also the output pin for the

PWM mode timer function.

PCINT6, Pin Change Interrupt source 6: The PB6 pin can serve as an external interrupt

sourceOC1A, Output Compare Match A output: The PB5 pin can serve as an external

output for the Timer/Counter1 Output 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.

PCINT5, Pin Change Interrupt source 5: The PB5 pin can serve as an external interrupt

source.

• OC2A/PCINT4, Bit 4

OC2A, Output Compare Match output: The PB4 pin can serve as an external output for

the Timer/Counter2 Output Compare. The pin has to be configured as an output (DDB4

set (one)) to serve this function. The OC2A pin is also the output pin for the PWM mode

timer function.

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