at90pwm81-16se ATMEL Corporation, at90pwm81-16se Datasheet - Page 73

• Manufacturer Part Number: at90pwm81-16se
• Description: 8-bit Avr Microcontroller With 8k Bytes In- System Programmable Flash
• Manufacturer: ATMEL Corporation

10.3.2
7734M–AVR–03/10
Alternate Functions of Port B
The Port B pins with alternate functions are shown in
Table 10-3.
The alternate pin configuration is as follows:
• PSCOUT22/ICP1/ADC9 – Bit 7
PSCOUT22: Output 2 of PSC 2
ICP1 – Input Capture Pin1: This pin can act as an input capture pin for Timer/Counter1.
ADC9, Analog to Digital Converter, input channel 9
• MISO/ACMP3/ADC8– Bit 6
MISO: Master Data input, Slave Data output pin for SPI channel. When the SPI is enabled as a master,
this pin is configured as an input regardless of the setting of DDB0. When the SPI is enabled as a slave,
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 and PUD bits.
ACMP3, Analog Comparator 3 Positive Input. Configure the port pin as input with the internal pull-up
switched off to avoid the digital port function from interfering with the function of the Analog
Comparator.
ADC8, Analog to Digital Converter, input channel 8
• ADC5/ACMP2/INT1/SCK – Bit 5
Port Pin
PB7
PB6
PB5
PB4
PB3
PB2
PB1
PB0
Alternate Functions
PSCOUT22 Output
ICP1 (Timer/Counter1 Input Capture Pin )
ADC9 (Analog Input Channel 9)
MISO (SPI Master In Slave Out)
ACMP3 (Analog Comparator 3 Positive Input )
ADC8 (Analog Input Channel 8)
ADC5 (Analog Input Channel 5)
ACMP2 (Analog Comparator 2 Positive Input)
INT1(External Interrupt 1 Input)
SCK (SPI Clock)
MOSI (SPI Master Out Slave In)
ADC3 (Analog Input Channel 3)
ACMPM reference for analog comparators
PSCOUTR1 Output .
ADC2 (Analog Input Channel 2)
ACMP2M (Analog Comparator 2 Negative Input)
INT0 (External Interrupt 0 Input)
PSCOUT21 OutpuT
PSCOUT20 output
T1counter source.
PSCOUT23 Output
ACMP3_OUT( Analog Comparator3 Output)
Port B Pins Alternate Functions
.
.
Table
10-3.
AT90PWM81
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