Datasheet

RE46C140

CMOS Photoelectric Smoke Detector ASIC with Interconnect R&E International

and Timer Mode A Subsidiary of Microchip Technology Inc.

Product Specification

Timing Diagrams (continued)

Local Alarm Timing (not to scale)

PER2

STROBE

IRED

PLED2

LED

No Alarm Local or Remote Alarm No Alarm

Horn Temporal Pattern

HON1

HOF1

HOF2

Horn

Interconnect Timing

IODLY1

IO as Output

IOFILT

IODLY2

IO as Input

Notes:

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