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
Standby, No Alarm (not to Scale)
Oscillator
T
POS
C
T
PWOSC
Internal Clock
T
ON1
T
PER1
STROBE
T
ON2
IRED
T
PLED1
LED
Low Supply or Chamber Test Failure
LED
Low BatteryTest
T
HON3
Low BatteryWarning Chirp Low Battery Warning Chirp
Horn
T
HOF3
Chamber Test and Warning is Offset from Low Battery Test and Warning by 21.5 Seconds.
2009 © Microchip Technology Inc. DS22179B-page 11