RE46C127
CMOS Ionization Smoke Detector ASIC with Interconnect and Timer Mode
Product Specification
R&E International
Timing Diagram (non Timer Mode)
Standby M ode; 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)
Ouput High Z
LED
Sample Smoke
T
HON1
T
HOF1
Low Battery Warning Chirp
Horn
T
IODLY
IO (Pin 2) as Output
IO Charge Dump
T
I OFI LT
Timing not same scale as above
IO ( Pin 2) as Input
T
I ODLY 2
LED supressed in remote alarm mode
Horn
Start of horn pattern is not synchronized to an external alarm
Horn pattern not self completing for external alarm
Internal Clock
Notes:
1. Smoke is not sampled w hen the horn is active. Horn cycle is self completing in local alarm.
2. Low battery w arning chirp is suppressed in local or remote alarm
3. IO Dump active only in local alarm, inactive if external alarm
Telephone 610.992.0727
Page 8 of 9
E-mail: rande@randeint.com
DS-RE46C127-121806
This datasheet contains PROPRIETARY and CONFIDENTIAL information.
Facsimile 610.992.0734
RANDE [ R & E INTERNATIONAL, INC. ]
