MSSI241B 查看數據表（PDF） - Mosel Vitelic, Corp

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MSSI241B

INSTANT VOICE ROM

Mosel Vitelic, Corp 

MOSEL VITELIC

Features

Single power supply can operate at 2.4V

through 6V.

Current output can drive 8 ohm speaker with a

transistor, Vout can drive buzzer directly.

The voice content is stored for 7-12 seconds for

SI121 ( 13-24 for SI241/241B ) including mute

and is single section / phrase and single trigger.

Automatic power down.

A phrase is composed of repetitive sections.

Interrupt function (INTP) stops the audio output

at once.

An LED function with 3Hz flash is provided to

tell the audio status.

A STOP pulse comes out when audio signal is

finished.

CDS input interface with 10ms debounce is

provided for trigger pin, REP pin and INTP pin.

MSSI121/241/241B

INSTANT VOICE ROM

Repeat pin was provided to keep audio output

repeating.

Built-in power on play function and is

programmable.

Programmable option for either Retrigger or not.

Programmable option for either Level or Edge

trigger type.

Programmable option for either Holdable or

Unholdable output type.

Programmable option for repeat times up to 8

times.

Programmable option for either LED display or

STOP pulse on LED/STP pin.

SI121 can be programmed by MSM9159,

MSM9156, MSM9140 & MSM9139.

SI241/241B can be programmed by MSM9159,

MSM9140.

Block Diagram

INTP

REP

TG

LED/STP

CONTROL

LOGIC

CLOCK

OSC

GENERATOR

VDD

VSS

TIMING

GENERATOR

TRIGGER

TABLE

1

ADDRESS

GENERATOR

VOICE

ROM

MPCM

DECODER

CURRENT

BUFFER

BUZZER

BUFFER

C OUT

VOUT1

VOUT2

PID224B 04/95

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