ATmega32C1 datasheet(11/365 Pages) ATMEL

Part #	ATmega32C1

Description	8-bit Microcontroller with 16K/32K/64K Bytes In-System Programmable Flash

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Manufacturer	ATMEL [ATMEL Corporation]

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11

7647F–AVR–04/09

ATmega16/32/64/M1/C1

Depending on the clock selection fuse settings, PE1 can be used as input to the inverting Oscil-

lator amplifier and input to the internal clock operating circuit.

Depending on the clock selection fuse settings, PE2 can be used as output from the inverting

Oscillator amplifier.

The various special features of Port E are elaborated in “Alternate Functions of Port E” on page

78 and “Clock Systems and their Distribution” on page 29.

2.3.7

AVCC

AVCC is the supply voltage pin for the A/D Converter, D/A Converter, Current source. It should

be externally connected to V

CC, even if the ADC, DAC are not used. If the ADC is used, it should

be connected to V

CC through a low-pass filter (see Section 18.6.2 “Analog Noise Canceling

Techniques” on page 238).

2.3.8

AREF

This is the analog reference pin for the A/D Converter.

2.4

About Code Examples

This documentation contains simple code examples that briefly show how to use various parts of

the device. These code examples assume that the part specific header file is included before

compilation. Be aware that not all C compiler vendors include bit definitions in the header files

and interrupt handling in C is compiler dependent. Please confirm with the C compiler documen-

tation for more details.

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