RE46C180
DS22275A-page 8
?2011 Microchip Technology Inc.
Interconnect
IO Active Delay
T
IODLY1
2
3.5
3.7
3.9
s
From start of Local Alarm
to IO Active. SyncEn = 1
2
3.1
3.3
3.5
s
From start of Local Alarm
to IO Active. SyncEn = 0
Remote Smoke Alarm
Delay
T
IODLY2
2
769
810
851
ms
No Local Alarm,
from IO Active to Alarm,
temporal horn pattern
T
IODLY3
2
299
315
331
ms
No Local Alarm,
from IO Active to alarm,
continuous horn pattern
IO Filter for Remote
Smoke Alarm
T
IOFILT
2
291
ms
IO pulse-width to be filtered
IO as input, no Local Alarm
IO Pulse On Time
for CO Alarm
T
IOPW1
2
37
290
ms
No Local Alarm, 2 valid
pulses required for CO
IO Pulse Off Time
for CO Alarm
T
IOTO1
2
5.4
s
IO = Low
IO Dump
T
IODMP1
2
475
500
525
ms
At conclusion of Local Alarm
or PTT
Horn Synchronization
IO Pulse Period
T
PIO1
2
3.8
4
4.2
s
Local Alarm, temporal horn
pattern, SyncEn =1 (Note 4)
IO Pulse On Time
T
ONIO
2
3.41
3.59
3.77
s
Local Alarm, temporal horn
pattern, SyncEn =1 (Note 4)
Horn Sync IO Dump
T
IODMP2
2
95
100
105
ms
Local Alarm,
SyncEn =1 (Note 4)
Horn Sync IO Dump
Delay
T
IODLY4
2
285
300
315
ms
Local Alarm,
SyncEn =1 (Note 4)
Auto Alarm Locate (AAL)
IO Cycle Period
T
PIO2
2
15.2
16
16.8
s
Local Alarm, temporal horn
pattern, SyncEn =1,
NoAAL = 0 (Note 4)
IO Cycle Off Time
T
OFIO
2
4.19
4.41
4.63
s
Local Alarm, temporal horn
pattern, SyncEn = 1,
No AAL = 0, IO off time
between IO pulse trains (3x)
(Note 4)
HUSH Timer Operation
HUSH Timer Period
T
TPER
8.5
9
9.5
min
No Alarm, ShrtTO = 0
76
80
84
s
No Alarm, ShrtTO = 1
EOL
End-of-Life Age Sample
T
EOL
346
364
382
Hours Standby, EOLEn = 1
AC ELECTRICAL CHARACTERISTICS (CONTINUED)
AC Electrical Characteristics: Unless otherwise indicated, all parameters apply at T
A
= -10癈 to +60癈,
V
DD
= 9V, V
SS
= 0V.
Parameter
Symbol
Test
Pin
Min
Typ
Max
Units
Conditions
Note 1: T
POSC
is 100% production tested. All other timing is verified by functional testing.
2: See timing diagram for CO alarm horn pattern.
3: See timing diagram for smoke alarm temporal and non-temporal horn pattern.
4: See timing diagram for horn synchronization and Auto Alarm Locate (AAL).
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