RE46C145 Datasheet, PDF (11/12 Pages) Microchip Technology – CMOS Photoelectric Smoke Detector ASIC with Interconnect and Timer Mode

RE46C145
CMOS Photoelectric Smoke Detector ASIC with
Interconnect and Timer Mode
Product Specification
R&E International
A Subsidiary of Microchip Technology Inc.
STROBE
IRED
LED
Timing Diagrams (continued)
Local Alarm Timing (not to scale)
T_PER2
T_PLED2
No Alarm
Horn
IO as Output
T_IODLY1
IO as Input
T_IOFILT
Local or Remote Alarm
Horn Temporal Pattern
T_HON1
T_HOF1
T_HOF2
Interconnect Timing
T_IODLY2
No Alarm
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.
© 2009 Microchip Technology Inc.
DS22181A-page 11