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ATMEGA48 Datasheet(PDF) 4 Page - ATMEL Corporation

Part No. ATMEGA48
Description  8-bit Microcontroller with 8K Bytes In-System Programmable Flash
Download  33 Pages
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Maker  ATMEL [ATMEL Corporation]
Homepage  http://www.atmel.com
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ATMEGA48 Datasheet(HTML) 4 Page - ATMEL Corporation

 
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4
2545JS–AVR–12/06
ATmega48/88/168
resistors are activated. The Port D pins are tri-stated when a reset condition becomes active,
even if the clock is not running.
The various special features of Port D are elaborated in ”Alternate Functions of Port D” on page
84.
1.1.7
AV
CC
AV
CC is the supply voltage pin for the A/D Converter, PC3:0, and ADC7:6. It should be externally
connected to V
CC, even if the ADC is not used. If the ADC is used, it should be connected to VCC
through a low-pass filter. Note that PC6..4 use digital supply voltage, V
CC.
1.1.8
AREF
AREF is the analog reference pin for the A/D Converter.
1.1.9
ADC7:6 (TQFP and QFN/MLF Package Only)
In the TQFP and QFN/MLF package, ADC7:6 serve as analog inputs to the A/D converter.
These pins are powered from the analog supply and serve as 10-bit ADC channels.


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