ATMEGA16M1-MU Atmel, ATMEGA16M1-MU Datasheet - Page 263

• Manufacturer Part Number: ATMEGA16M1-MU
• Description: IC MCU AVR 16K FLASH 32VQFN
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA16M1-MU

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 16MHz
• Connectivity: CAN, LIN, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
• Program Memory Size: 16KB (8K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 512 x 8
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 11x10b; D/A 1x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 32-VQFN Exposed Pad, 32-HVQFN, 32-SQFN, 32-DHVQFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Number Of I /o: -

24. DAC – Digital to Analog Converter
24.1
24.2
8209D–AVR–11/10
Features
Overview
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The ATmega16M1/32M1/64M1 features a 10-bit Digital to Analog Converter. This DAC can be
used for the analog comparators and/or can be output on the D2A pin of the microcontroller via
a dedicated driver.
The DAC has a separate analog supply voltage pin, AV
from V
The reference voltage is the same as the one used for the ADC,
plexer Register” on page 242.
voltage reference may be externally decoupled at the AREF pin by a capacitor for better noise
performance.
10 bits resolution
8 bits linearity
±0.5 LSB accuracy between 100mV and AVcc - 100mV
V
The DAC could be connected to the negative inputs of the analog comparators and/or to a
dedicated output driver
The output impedance of the driver is around 100 Ohm. So the driver is able to load a 1nF
capacitance in parallel with a resistor higher than 33K with a time constant around 1µs
out
= DAC × Vref/1023
CC
. See the paragraph
“ADC Noise Canceler” on page 230
These nominally 2.56V Vref or AV
ATmega16M1/32M1/64M1
CC
. AV
CC
must not differ more than ±0.3V
on how to connect this pin.
CC
See “ADMUX – ADC Multi-
are provided On-chip. The
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