AT90PWM161 Atmel Corporation, AT90PWM161 Datasheet - Page 226

• Manufacturer Part Number: AT90PWM161
• Manufacturer: Atmel Corporation

Specifications of AT90PWM161

• Flash (kbytes): 16 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

18. Digital to Analog Converter - DAC
18.1
226
Features
AT90PWM81
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The AT90PWM81 features a 10-bit Digital to Analog Converter. This DAC can be used for the analog
comparators
The DAC has a separate analog supply voltage pin, AV
V
The reference voltage is the same as the one used for the ADC,
ADMUX” on page
ence may be externally decoupled at the AREF pin by a capacitor for better noise performance.
CC
10 bits resolution
8 bits linearity
+/- 0.5 LSB accuracy between 100mV and AVcc-100mV
Vout = DAC*Vref/1023
The DAC could be connected to the negative inputs of the analog comparators and/or to a dedicated output
driver.
Output impedance around 1KOhm.
. See the paragraph
216.. These nominally 2.56V Vref or AV
“ADC Noise Canceler” on page 209
CC
. AV
on how to connect this pin.
CC
CC
are provided On-chip. The voltage refer-
must not differ more than ± 0.3V from
See “ADC Multiplexer Register –
7734P–AVR–08/10