Rainbow-electronics ATAR862-8 User Manual download pdf (Page 13)

ATAR862-8

4589B–4BMCU–02/03

Microcontroller Block

Features

• Extended Temperature Range for High Temperature up to 125°C

• 4-Kbyte ROM, 256 x 4-bit RAM

• 16 Bi-directional I/Os

• Up to Seven External/Internal Interrupt Sources

• 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

• Supply-voltage Range (2.0 V to 4.0 V)

• Very Low Sleep Current (< 1 µA)

• 32 x 16-bit EEPROM (ATAR892 Only)

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

• Watchdog, POR and Brown-out Function

• Voltage Monitoring Inclusive Lo_BAT Detect

• Flash Controller T48C862 Available (SSO24)

Description The ATAR862-8 is a member of Atmel’s family of 4-bit single-chip microcontrollers. It

offers highest integration for IR and RF data communication, remote-control and phase-

control applications. The ATAR862-8 is suitable for the transmitter side as well as the

receiver side. It contains ROM, RAM, parallel I/O ports, two 8-bit programmable multi-

function timer/counters with modulator and demodulator function, voltage supervisor,

interval timer with watchdog function and a sophisticated on-chip clock generation with

external clock input, integrated RC-oscillator, 32-kHz and 4-MHz crystal-oscillators. The

ATAR862-8 has an EEPROM as a third chip in one package.

Figure 9. Block Diagram

T2I SD

Voltage monitor

External input

MARC4

UTCM

OSC1 OSC2

I/O bus

ROM RAM

4-bit CPU core

256 x 4 bit

Data direction +

alternate function

Data direction +

interrupt control

Port 4

Port 5

Data direction +

alternate function

Port 6

Timer 3

Brown-out protect.

RESET

Clock management

Timer 1

watchdog timer

Timer 2

Serial interface

Port 1

T2O

T3O

T3I

BP10

BP13

BP20/NTE

BP21

BP22

BP23

BP40

INT3

SC BP41

VMI

BP42

T2O

BP43

INT3

BP50

INT6

BP51

INT6

BP52

INT1

BP53

INT1

BP60

T3O

BP63

T3I

oscillators

Crystal

oscillators

4 K x 8 bit

VMI

with modulator

SSI

External

clock input

interval- and

8/12-bit timer

8-bit

timer / counter

with modulator

and demodulator

T2I

1 2 ... 8 9 10 11 12 13 14 15 16 17 18 ... 105 106

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Rainbow-electronics ATAR862-8 User Manual Page 13

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