RE46C127 查看數據表（PDF） - Microchip Technology

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RE46C127

CMOS Ionization Smoke Detector ASIC with Interconnect and Timer Mode

Microchip Technology 

RE46C127

CMOS Ionization Smoke Detector ASIC with

Interconnect and Timer Mode

Product Specification

R&E International

A Subsidiary of Microchip Technology Inc.

Timing Diagram (non Timer Mode)

Standby M ode; No Low Battery; No Alarm

Alarm; No Low Battery

Alarm; Low Battery

No Alarm; Low Battery

Oscillator

Internal Clock

LED

Pin 15 > Pin 13

1.67S 10.5mS

24 Clock Cycles (40 S)

Pin 13 > Pin 15; 130mV Level Shift on Pin 13

Pin 15 > Pin 13

24 Clock Cycles (1S)

Ouput High Z

Sample Smoke

Horn

THON1

THOF1

TIODLY

IO (Pin 2) as Output

Timing not same scale as above

IO Charge Dump

IO ( Pin 2) as Input

TI OFI LT

TI OD LY 2

LED supressed in remote alarm mode

Horn Start of horn pattern is not synchronized to an external alarm

Horn pat t ern not self complet ing f or ext ernal alarm

Internal Clock

Notes:

1. Smoke is not sampled w hen the horn is active. Horn cycle is self completing in local alarm.

2. Low battery w arning chirp is suppressed in local or remote alarm

3. IO Dump active only in local alarm, inactive if external alarm

Low Battery Warning Chirp

© 2009 Microchip Technology Inc.

DS22174B-page 8

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