RE46C152 데이터 시트보기 (PDF) - Microchip Technology

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RE46C152

CMOS Ionization Smoke Detector ASIC with Interconnect, Timer Mode and Tone Select

Microchip Technology 

RE46C152

CMOS Ionization Smoke Detector ASIC with Interconnect,

Timer Mode and Tone Select

Product Specification

R&E International

A Subsidiary of Microchip Technology Inc.

Timing Diagram (non Timer Mode)

Standby Mode; No Low Battery; No Alarm

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

24 Clock Cycles (40 S)

24 Clock Cycles (1S)

LED

Sample Smoke (NFPA72)

Horn (2/3 Duty Cycle, TONE=VSS)

Horn (NFPA72, TONE=Open)

IO (Pin 2) as Output

THON3

THOF3

See Figure Below for Complete Temporal Horn Cycle

TIODLY1

Timing not same scale as above

LowBattery WarningChirp

Low Battery Warning Chirp

IO Charge Dump

TIOFILT

IO ( Pin 2) as Input

Horn Start of horntemporal patternisnot synchronizedtoanexternal alarm

TIODLY2

LED supressed in remote alarmmode

Horn pattern not self completing for external alarm,see timing below for complete horn cycle

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 local or remote alarm

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

THON1 THOF1

THOF2

Complete Temporal Horn Pattern

© 2009 Microchip Technology Inc.

DS22175A-page 10

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