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RE46C190S16F Datasheet, PDF (8/42 Pages) Microchip Technology – CMOS Low Voltage Photoelectric Smoke Detector ASIC with Interconnect and Timer Mode
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RE46C190
AC ELECTRICAL CHARACTERISTICS
AC Electrical Characteristics: Unless otherwise indicated, all parameters apply at TA = -10° to +60°C, VDD = 3V,
VBST = 4.2V, Typical Application (unless otherwise noted) (Note 1 to Note 4).
Parameter
Symbol Test Pin Min
Typ
Max
Units
Condition
Time Base
Internal Clock Period
TPCLK
9.80
10.4
11.0
ms PROGSET,
IO = high
RLED Indicator
On Time
TON1
8
Standby Period
TPLED1
8
Local Alarm Period TPLED2A
8
TPLED2B
8
Hush Timer Period
TPLED4
8
External Alarm
Period
TPLED0
8
9.80
10.4
11.0
320
344
368
470
500
530
625
667
710
10
10.7
11.4
LED IS NOT ON
ms Operating
s
Standby, no alarm
ms Local alarm condition
with temporal horn
pattern
ms Local alarm condition
with continuous horn
pattern
s
Timer mode, no local
alarm
s
Remote alarm only
GLED Indicator
Latched Alarm Period TPLED3
9
Latched Alarm Pulse TOFLED
9
Train (3x) Off Time
Latched Alarm LED TLALED
9
Enabled Duration
40
43
46
s
Latched Alarm Condition,
LED enabled
1.25
1.33
1.41
s
Latched Alarm Condition,
LED enabled
22.4
23.9
25.3
Hours Latched Alarm Condition,
LED enabled
Smoke Check
Smoke Test Period
TPER0A
2
with Temporal Horn
Pattern
TPER1A
2
10
10.7
11.4
1.88
2.0
2.12
s
Standby, no alarm
s
Standby, after one valid
smoke sample
TPER2A
2
0.94
1.0
1.06
s
Standby,
after two consecutive
valid smoke samples
TPER3A
2
0.94
1.0
1.06
s
Local Alarm
(three consecutive valid
smoke samples)
TPER4A
2
235
250
265
ms Push button test,
>1 chamber detections
313
333
353
ms Push button test,
no chamber detections
TPER5A
2
7.5
8.0
8.5
Note 1: See timing diagram for Horn Pattern (Figure 5-2).
s
In remote alarm
2: TPCLK and TIRON are 100% production tested. All other AC parameters are verified by functional testing.
3: Typical values are for design information only.
4: Limits over the specified temperature range are not production tested, and are based on characterization
data.
DS22271A-page 8
 2010 Microchip Technology Inc.
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