AT90PWM81 Atmel Corporation, AT90PWM81 Datasheet - Page 73

• Manufacturer Part Number: AT90PWM81
• Manufacturer: Atmel Corporation

Specifications of AT90PWM81

• Flash (kbytes): 8 Kbytes
• Pin Count: 20
• Max. Operating Frequency: 16 MHz
• Cpu: 8-bit AVR
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 20
• Ext Interrupts: 3
• Usb Speed: No
• Usb Interface: No
• Spi: 1
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 11
• Adc Resolution (bits): 10
• Adc Speed (ksps): 125
• Analog Comparators: 3
• Resistive Touch Screen: No
• Dac Channels: 1
• Dac Resolution (bits): 10
• Temp. Sensor: Yes
• Crypto Engine: No
• Sram (kbytes): 0.25
• Eeprom (bytes): 512
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: No
• Temp. Range (deg C): -40 to 125
• I/o Supply Class: 2.7 to 5.5
• Operating Voltage (vcc): 2.7 to 5.5
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 1
• Output Compare Channels: 8
• Input Capture Channels: 1
• Pwm Channels: 6
• 32khz Rtc: No
• Calibrated Rc Oscillator: Yes

9.3.2
7734P–AVR–08/10
Alternate Functions of Port B
The Port B pins with alternate functions are shown in
Table 9-3.
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
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
9-3.
AT90PWM81
73