A5366
Photoelectric Smoke Detector
with Interconnect and Timer
Functional Block Diagram
+Supply VDD
9V
DETECT
C1
C2
STROBE
IRED
Band-gap
Reference
+
_
Low Battery
I/O
VDD
Photoamp
+
_
Logic
Power-On
Reset
VDD
Oscillator
and Timing
HUSH
TEST
FEEDBACK
HORN2
HORN1
LED
VDD
VDD
TIMING RES
OSC CAP
VSS
–Supply
Allegro MicroSystems, Inc.
3
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com