ATmega16A datasheet(7/352 Pages) ATMEL

7 / 352 page

8154B–AVR–07/09

ATmega16A

2.2.7

RESET

Reset Input. A low level on this pin for longer than the minimum pulse length will generate a

reset, even if the clock is not running. The minimum pulse length is given in Table 27-2 on page

296. Shorter pulses are not guaranteed to generate a reset.

2.2.8

XTAL1

Input to the inverting Oscillator amplifier and input to the internal clock operating circuit.

2.2.9

XTAL2

Output from the inverting Oscillator amplifier.

2.2.10

AVCC

AVCC is the supply voltage pin for Port A and the A/D Converter. It should be externally con-

nected 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.

2.2.11

AREF

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

Resources

A comprehensive set of development tools, application notes and datasheets are available for

download on http://www.atmel.com/avr.

Note:

Data Retention

Reliability Qualification results show that the projected data retention failure rate is much less

than 1 PPM over 20 years at 85°C or 100 years at 25°C.

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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