RE46C126 데이터 시트보기 (PDF) - Microchip Technology

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RE46C126

CMOS Ionization Smoke Detector ASIC with Interconnect

Microchip Technology 

RE46C126

CMOS Ionization Smoke Detector ASIC with Interconnect

Product Specification

R&E International

A Subsidiary of Microchip Technology Inc.

Standby Mode; No Low Battery; No Alarm

Timing Diagram

Alarm; No Low Battery

Alarm; Low Battery

No Alarm; Low Battery

Oscillator

Pin 15 > Pin 13

1.67S 10.5mS

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

Pin 15 > Pin 13

Internal Clock

LED

24 Clock Cycles (40 S)

Floating

24 Clock Cycles (1S)

DETCOMP (pin1)

Sample Smoke

STROBE (pin 4)

Floating

Horn

IO (Pin 2) as Output

IO Charge Dump

IO ( Pin 2) as Input

TIOFILT

See Figure Below for Complete Horn Cycle

TIODLY2

TIODMP

LED supressed in remote alarm mode

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

Horn pattern not self completing for external alarm

Low Battery Warning Chirp

Internal Clock

Notes:

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

2. Low battery warning chirp is suppressed in alarm

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

© 2009 Microchip Technology Inc.

DS22170B-page 7

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