ATmega16 datasheet(310/315 Pages) ATMEL

310 / 315 page

ATmega16(L)

2466E–AVR–10/02

Table of Contents

Features................................................................................................. 1

Pin Configurations................................................................................ 2

Disclaimer.............................................................................................. 2

Overview................................................................................................ 3

Block Diagram ...................................................................................................... 3

Pin Descriptions.................................................................................................... 4

About Code Examples.......................................................................... 5

AVR CPU Core ...................................................................................... 6

Introduction ........................................................................................................... 6

Architectural Overview.......................................................................................... 6

ALU – Arithmetic Logic Unit.................................................................................. 7

Status Register ..................................................................................................... 7

General Purpose Register File ............................................................................. 8

Stack Pointer ...................................................................................................... 10

Instruction Execution Timing............................................................................... 11

Reset and Interrupt Handling.............................................................................. 11

AVR ATmega16 Memories ................................................................. 14

In-System Reprogrammable Flash Program Memory ........................................ 14

SRAM Data Memory........................................................................................... 15

EEPROM Data Memory...................................................................................... 16

I/O Memory ......................................................................................................... 21

System Clock and Clock Options ..................................................... 22

Clock Systems and their Distribution .................................................................. 22

Clock Sources..................................................................................................... 23

Crystal Oscillator................................................................................................. 23

Low-frequency Crystal Oscillator ........................................................................ 26

External RC Oscillator ........................................................................................ 26

Calibrated Internal RC Oscillator ........................................................................ 27

External Clock..................................................................................................... 29

Timer/Counter Oscillator..................................................................................... 29

Power Management and Sleep Modes.............................................. 30

Idle Mode ............................................................................................................ 31

ADC Noise Reduction Mode............................................................................... 31

Power-down Mode.............................................................................................. 31

Power-save Mode............................................................................................... 31

Standby Mode..................................................................................................... 32

Extended Standby Mode .................................................................................... 32

Minimizing Power Consumption ......................................................................... 33

ATMEGA16 Datasheet(PDF) 310 Page - ATMEL Corporation