AT90PWM81-16SN Atmel, AT90PWM81-16SN Datasheet - Page 226

• Manufacturer Part Number: AT90PWM81-16SN
• Description: IC MCU AVR 8K FLASH ISP 20SOIC
• Manufacturer: Atmel
• Series: AVR® 90PWM Lightingr

Specifications of AT90PWM81-16SN

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 16MHz
• Connectivity: SPI
• Peripherals: Brown-out Detect/Reset, PWM, WDT
• Number Of I /o: 16
• Program Memory Size: 8KB (8K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 512 x 8
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 8x10b; D/A 1x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 105°C
• Package / Case: 20-SOIC (7.5mm Width)
• Data Bus Width: 8 bit
• Data Ram Size: 256 B
• Interface Type: SPI
• Maximum Clock Frequency: 16 MHz
• Number Of Timers: 1
• Maximum Operating Temperature: + 105 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit, 8 Channel
• On-chip Dac: 10 bit, 1 Channel
• Height: 2.35 mm
• Length: 13 mm
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 2.7 V
• Width: 7.6 mm
• For Use With: ATSTK600-SOIC - STK600 SOCKET/ADAPTER FOR SOIC
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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