RE46C162/163
CMOS Ionization Smoke Detector ASIC with Interconnect,
Timer Mode and Alarm Memory
Features
Description
• Pin Selectable Horn Patterns
• Alarm Memory
• Sensitivity Control Timer:
- 8 minute Timer for RE46C162
- 1 minute Timer for RE46C163
• >1500V ESD Protection (HBM) on All Pins
• Guard Outputs for Ion Detector Input
• ±0.75 pA Detect Input Current
• Internal Reverse Battery Protection
• Low Quiescent Current Consumption ( Pin 15; 130mV Level Shift on P in 13
TPW
Pin 15 > Pin 13
TPER2
Inte rnal Clock
24 Cloc k Cyc les (40 S)
24 Cloc k Cy cles (1S)
LED
Sample Smoke
Low Battery Warning Chirp
Horn
See F igure Below for C omplete Horn Cycle
TIODLY1
IO (Pin 2) as Output
Timing not same scale as above
IO Charge Dump
TIODMP
TIOFILT
IO ( Pin 2) a s Input
LED supress ed in remote alarm mode
TIODLY2
Horn
Start of horn tem poral pattern is not sy nc hroniz ed to an ex ternal alarm
Horn pattern not self completing for external alarm,s ee timing below for complete horn c ycle
Inte rnal Clock
Note s:
1. Smoke is not sampled when the ho rn is active. Horn cycle is self completing in local alarm.
2. L ow battery warnin g chirp is suppressed in local or re mote alarm
3. IO Dump active on ly in loca l alarm, inactive if external alarm
T HOF2
THON1 THOF1
Complete Temporal Horn Pattern
THON3
THOF3
Non -Temporal Horn Pattern
FIGURE 3-1:
DS22245A-page 12
Timing Diagram – Standby, Local Alarm, Low Battery.
2010 Microchip Technology Inc.
RE46C162/163
Oscillator
TPER1
TPW
Internal Clock
TSTART
TLOF3
LED
Outputs High Z
TSTROBE
TTPER
FIGURE 3-2:
Timing Diagram –Timer Mode.
AlarmMemory
Alarm, No Low Battery
Alarm Memory; No Alarm; No Low Battery
AlarmMemory After 24 Hour Timer
Indication
Standby
LED
TLON
TLOF2
TLOF4
TLOF1
TLOF1
TLOF5
THON2
TAMTPER
HB
THOF5
TSTART
FIGURE 3-3:
Timing Diagram – Alarm Memory Mode.
2010 Microchip Technology Inc.
DS22245A-page 13
RE46C162/163
NOTES:
DS22245A-page 14
2010 Microchip Technology Inc.
RE46C162/163
4.0
PACKAGING INFORMATION
4.1
Package Marking Information
16-Lead PDIP
Example
XXXXXXXXXXXXXX
XXXXXXXXXXXXXX
YYWWNNN
Legend: XX...X
Y
YY
WW
NNN
e3
*
Note:
RE46C162-V/P
1003256
Customer-specific information
Year code (last digit of calendar year)
Year code (last 2 digits of calendar year)
Week code (week of January 1 is week ‘01’)
Alphanumeric traceability code
Pb-free JEDEC designator for Matte Tin (Sn)
This package is Pb-free. The Pb-free JEDEC designator ( e3 )
can be found on the outer packaging for this package.
In the event the full Microchip part number cannot be marked on one line, it will
be carried over to the next line, thus limiting the number of available
characters for customer-specific information.
2010 Microchip Technology Inc.
DS22245A-page 15
RE46C162/163
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