RE46C145_12 Datasheet, PDF (11/26 Pages) Microchip Technology – CMOS Photoelectric Smoke Detector ASIC with Interconnect and Timer Mode

RE46C145
Oscillator
Internal Clock
STROBE
IRED
T_POSC
T_{PW OSC}
T_ON1
LED
LED
Horn
Low BatteryTest
Low BatteryWarning Chirp
Standby, No Alarm (not to scale)
T_PER1
T_ON2
T_PLED1
Low Supply or Chamber Test Failure
Low Battery Warning Chirp
T_HON3
FIGURE 3-1:
T_HOF3
Chamber Test and Warning is Offset from Low Battery Test and Warning by 21.5 Seconds.
RE46C145 Timing Diagram – Standby, Low Supply and Chamber Test Failure.
 2009-2012 Microchip Technology Inc.
DS22181C-page 11