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參數(shù)資料
| 型號： | MQ80C52CXXX-25P883 |
| 廠商： | ATMEL CORP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, MROM, 25 MHz, MICROCONTROLLER, CQFP44 |
| 封裝： | CERAMIC, QFP-44 |
| 文件頁數(shù)： | 48/108頁 |
| 文件大?。?/td> | 3682K |
| 代理商： | MQ80C52CXXX-25P883 |
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44
8069R–AVR–06/2013
XMEGA A4
Not recommended for new designs -
Use XMEGA A4U series
27. AC - Analog Comparator
27.1
Features
Two Analog Comparators
Selectable Power vs. Speed
Selectable hysteresis
– 0, 20 mV, 50 mV
Analog Comparator output available on pin
Flexible Input Selection
– 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.
Interrupt and event generation on
– Rising edge
– Falling edge
– Toggle
Window function interrupt and event generation on
– Signal above window
– Signal inside window
– Signal below window
27.2
Overview
XMEGA A4 features two 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 has one AC pair. Notation of this peripheral is ACA.
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