ATmega16HVB datasheet(76/273 Pages) ATMEL

76 / 273 page

8042A–AVR–07/09

ATmega16HVB/32HVB

• MOSI/PCINT10 - Port B, Bit6

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

Slave, this pin is configured as an input regardless of the setting of DDB6. When the SPI is

enabled as a Master, the data direction of this pin is controlled by DDB6. When the pin is forced

by the SPI to be an input, the pull-up can still be controlled by the PORTB6 bit. When not operat-

ing in SPI mode, this pin can serve as an external interrupt source.

PCINT10: Pin Change Interrupt 10. This pin can serve as external interrupt source.

• SCK/PCINT9 - Port B, Bit5

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

Slave, this pin is configured as an input regardless of the setting of DDB5. When the SPI is

enabled as a Master, the data direction of this pin is controlled by DDB5. When the pin is forced

by the SPI to be an input, the pull-up can still be controlled by the PORTB5 bit.

PCINT9: Pin Change Interrupt 9. This pin can serve as external interrupt source.

•SS/PCINT8 - Port B, Bit4

SS, Slave Select input: When the SPI is enabled as a Slave, this pin is configured as an input

regardless of the setting of DDB4. 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 DDB4. When

the pin is forced by the SPI to be an input, the pull-up can still be controlled by the PORTB4 bit.

When not operating in SPI mode, this pin can serve as Clock Output, CPU Clock divided by 2.

See ”Clock Output” on page 28.

PCINT8: Pin Change Interrupt 8. This pin can serve as external interrupt source.

• PCINT7 - Port B, Bit3

PCINT7: Pin Change Interrupt 7. This pin can serve as external interrupt source.

• PCINT6 - Port B, Bit2

PCINT6: Pin Change Interrupt 6. This pin can serve as external interrupt source.

• CKOUT/PCINT5 - Port B, Bit1

CKOUT: Clock output. This pin can serve as clock output pin.

PCINT5: Pin Change Interrupt 5. This pin can serve as external interrupt source.

• ICP00/PCINT4 - Port B, Bit0

ICP00: Input Capture Timer/Counter0. This pin can serve as Input Capture Trigger for

Timer/Counter0

PCINT4: Pin Change Interrupt 4. This pin can serve as external interrupt source.

ATmega16HVB Datasheet(PDF) 76 Page - ATMEL Corporation