DOC7707 datasheet(77/307 Pages) ETC1

77 / 307 page

7707F–AVR–11/10

AT90USB82/162

The alternate pin configuration is as follows:

• ICP1/INT4/CLK0, Bit 7

ICP1, Input Capture pin 1 :The PC7 pin can act as an input capture for Timer/Counter1.

INT4, External Interrupt source 4 : The PC7 pin can serve as an external interrupt source to the

MCU.

CLK0, Clock Output : The PC7 pin can serve as oscillator clock ouput if the feature is enabled by

fuse.

• PCINT8/OC1A, Bit 6

PCINT8, Pin Change Interrupt source 8 : The PC6 pin can serve as an external interrupt source.

OC1A, Output Compare Match A output: The PC6 pin can serve as an external output for the

Timer/Counter1 Output Compare. The pin has to be configured as an output (DDC6 set “one”) to

serve this function. The OC1A pin is also the output pin for the PWM mode timer function.

• PCINT9/OC1B, Bit 5

PCINT9, Pin Change Interrupt source 9: The PC5 pin can serve as an external interrupt source.

OC1B, Output Compare Match B output: The PC5 pin can serve as an external output for the

Timer/Counter1 Output Compare. The pin has to be configured as an output (DDC5 set “one”) to

serve this function. The OC1B pin is also the output pin for the PWM mode timer function.

• PCINT10, Bit 4

PCINT10, Pin Change Interrupt source 10 : The PC4 pin can serve as an external interrupt

source.

• PCINT11, Bit 2

PCINT11, Pin Change Interrupt source 11 : The PC2 pin can serve as an external interrupt

source.

• Reset/dW, Bit 1

Reset, Reset input. External Reset input is active low and enabled by unprogramming ("1") the

RSTDISBL Fuse. Pullup is activated and output driver and digital input are deactivated when the

pin is used as the RESET pin.

Table 11-6.

Port C Pins Alternate Functions

Port Pin

Alternate Function

PC7

ICP1/INT4/CLKO

PC6

PCINT8/OC1A

PC5

PCINT9/OC1B

PC4

PCINT10

PC2

PCINT11

PC1

Reset, dW

PC0

XTAL2

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