RE46C122
CMOS Ionization Smoke Detector ASIC with Interconnect and Timer Mode
R&E International
Product Specification
Timing Diagram (non Timer Mode)
Standby Mode; No Low Battery; No Alarm
Alarm; No Low Battery
Alarm; Low Battery
No Alarm; Low Battery
Oscillator
Pin 15 > Pin 13
Pin 13 > Pin 15; 130mV Level Shift on Pin 13
Pin 15 > Pin 13
1.67S
10.5mS
Internal Clock
24 Clock Cycles (40 S)
24 Clock Cycles (1S)
LED
Sample Smoke
Horn
Low Battery Warning Chirp
See Figure Below for Complete Horn Cycle
TIODLY1
IO (Pin 2) as Output
IO Charge Dump
Timing not same scale as above
TIOFILT
IO ( Pin 2) as Input
LED supressed in remote alarm mode
TIODLY2
Horn
Start of horn temporal pattern is not synchronized to an external alarm
Horn pattern not self completing for external alarm,see timing below for complete horn cycle
Internal Clock
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
THON1 THOF1
THOF2
Complete Temporal Horn Pattern
Telephone 610.992.0727
Page 8 of 10
Facsimile 610.992.0734
E-mail: rande@randeint.com
DS-RE46C122-121806
This datasheet contains PROPRIETARY and CONFIDENTIAL information.
RANDE [ R & E INTERNATIONAL, INC. ]
