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ATMEGA644 Datasheet(PDF) 6 Page - ATMEL Corporation

Part No. ATMEGA644
Description  8-bit Microcontroller with 64K Bytes In-System Programmable Flash
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Maker  ATMEL [ATMEL Corporation]
Homepage  http://www.atmel.com
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ATMEGA644 Datasheet(HTML) 6 Page - ATMEL Corporation

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6
2593LS–AVR–02/07
ATmega644
2.2.10
AVCC
AVCC is the supply voltage pin for Port F and the Analog-to-digital Converter. It should be exter-
nally connected to V
CC, even if the ADC is not used. If the ADC is used, it should be connected
to V
CC through a low-pass filter.
2.2.11
AREF
This is the analog reference pin for the Analog-to-digital Converter.
3.
Resources
A comprehensive set of development tools, application notes and datasheetsare available for
download on http://www.atmel.com/avr.


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