ATMEGA48 datasheet(8/377 Pages) ATMEL

Part #	ATMEGA48

Description	High performance, low power Atmel AVR 8-bit microcontroller Advanced RISC architecture

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Manufacturer	ATMEL [ATMEL Corporation]

Direct Link	http://www.atmel.com

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8

2545T–AVR–05/11

ATmega48/88/168

3.

Resources

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

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

4.

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.

5.

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.

For I/O Registers located in extended I/O map, “IN”, “OUT”, “SBIS”, “SBIC”, “CBI”, and “SBI”

instructions must be replaced with instructions that allow access to extended I/O. Typically

“LDS” and “STS” combined with “SBRS”, “SBRC”, “SBR”, and “CBR”.

6.

Capacitive touch sensing

The Atmel QTouch Library provides a simple to use solution to realize touch sensitive interfaces

on most Atmel AVR microcontrollers. The QTouch Library includes support for the QTouch and

QMatrix acquisition methods.

Touch sensing can be added to any application by linking the appropriate Atmel QTouch Library

for the AVR Microcontroller. This is done by using a simple set of APIs to define the touch chan-

nels and sensors, and then calling the touch sensing API’s to retrieve the channel information

and determine the touch sensor states.

The QTouch Library is FREE and downloadable from the Atmel website at the following location:

www.atmel.com/qtouchlibrary. For implementation details and other information, refer to the

Atmel QTouch Library User Guide - also available for download from the Atmel website.

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ATMEGA48 Datasheet(PDF) 8 Page - ATMEL Corporation

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