ATAM862 datasheet(13/110 Pages) ATMEL

13 / 110 page

4554E–4BMCU–05/06

ATAM862-3

11. Microcontroller Block

12. Features

• 4-Kbyte ROM, 256

× 4-bit RAM

• EEPROM Programmable Options

• Read Protection for the EEPROM Program Memory

• 11 Bi-directional I/Os

• Up to Seven External/Internal Interrupt Sources

• Eight Hardware and Software Interrupt Priorities

• Multifunction Timer/Counter

– IR Remote Control Carrier Generator

– Biphase-, Manchester- and Pulse-width Modulator and Demodulator

– Phase Control Function

• Programmable System Clock with Prescaler and Five Different Clock Sources

• Very Low Sleep Current (< 1 µA)

• 2

× 512-bit EEPROM Data Memory

• 256

× 4-bit RAM Data Memory

• Synchronous Serial Interface (2-wire, 3-wire)

• Watchdog, POR and Brown-out Function

• Voltage Monitoring Inclusive Lo_BAT Detect

13. Description

The microcontroller is designed with EEPROM cells so it can be programmed several times. To

offer full compatibility with each ROM version, the I/O configuration is stored into a separate

internal EEPROM block during programming. The configuration is downloaded to the I/Os with

every power-on reset.

14. Introduction

The microcontroller block is a member of Atmel’s family of 4-bit single-chip microcontrollers.

Instead of ROM it contains EEPROM, RAM, parallel I/O ports, two 8-bit programmable multi-

function timer/counters, voltage supervisor, interval timer with watchdog function and a

sophisticated on-chip clock generation with integrated RC-, 32-kHz and 4-MHz crystal

oscillators.

ATAM862 Datasheet(PDF) 13 Page - ATMEL Corporation