ATXMEGA256A3-MU Atmel, ATXMEGA256A3-MU Datasheet - Page 44
ATXMEGA256A3-MU
Manufacturer Part Number
ATXMEGA256A3-MU
Description
8-bit Microcontrollers - MCU 8/16 bit 1.6V-3.6V 256KB + 8KB
Manufacturer
Atmel
Datasheet
1.ATXMEGA64A3-MU.pdf
(134 pages)
Specifications of ATXMEGA256A3-MU
Product Category
8-bit Microcontrollers - MCU
Rohs
yes
Core
AVR
Data Bus Width
8 bit/16 bit
Maximum Clock Frequency
32 MHz
Program Memory Size
256 KB
Data Ram Size
16 KB
On-chip Adc
Yes
Package / Case
QFN EP
Mounting Style
SMD/SMT
A/d Bit Size
12 bit
A/d Channels Available
8
Data Rom Size
4 KB
Interface Type
I2C, SPI, USART
Maximum Operating Temperature
+ 85 C
Minimum Operating Temperature
- 40 C
Number Of Programmable I/os
50
Number Of Timers
7
Processor Series
ATXMega
Program Memory Type
Flash
Factory Pack Quantity
260
Supply Voltage - Max
3.6 V
Supply Voltage - Min
1.6 V
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27. AC - Analog Comparator
27.1
27.2
8068T–AVR–12/10
Features
Overview
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XMEGA A3 features four Analog Comparators (AC). An Analog Comparator compares two volt-
ages, and the output indicates which input is largest. The Analog Comparator may be configured
to give interrupt requests and/or events upon several different combinations of input change.
Both hysteresis and propagation delays may be adjusted in order to find the optimal operation
for each application.
A wide range of input selection is available, both external pins and several internal signals can
be used.
The Analog Comparators are always grouped in pairs (AC0 and AC1) on each analog port. They
have identical behavior but separate control registers.
Optionally, the state of the comparator is directly available on a pin.
PORTA and PORTB each has one AC pair. Notations are ACA and ACB, respectively.
Four Analog Comparators
Selectable Power vs. Speed
Selectable hysteresis
Analog Comparator output available on pin
Flexible Input Selection
Interrupt and event generation on
Window function interrupt and event generation on
– 0, 20 mV, 50 mV
– All pins on the port
– Output from the DAC
– Bandgap reference voltage.
– Voltage scaler that can perform a 64-level scaling of the internal VCC voltage.
– Rising edge
– Falling edge
– Toggle
– Signal above window
– Signal inside window
– Signal below window
XMEGA A3
44
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