RE46C143
CMOS Photoelectric Smoke Detector ASIC with Interconnect
Product Specification
R&E International
A Subsidiary of Microchip Technology Inc.
Timing Diagrams (continued)
STROBE
IRED
LED
Local Alarm Timing (not to scale)
TPER2
TPLED2
No Alarm
Horn Timing
Local or Remote Alarm
THON1
THOF1
Horn
Interconnect Timing
IO as Output
TIODLY1
IO as Input
TIOFILT
TIODLY2
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
No Alarm
© 2009 Microchip Technology Inc.
DS22178A-page 11