RE46C190S16F datasheet(8/42 Pages) MICROCHIP

Part #	RE46C190S16F

Description	CMOS Low Voltage Photoelectric Smoke Detector ASIC with Interconnect and Timer Mode

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Manufacturer	MICROCHIP [Microchip Technology]

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RE46C190

DS22271A-page 8

 2010 Microchip Technology Inc.

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

9.80

10.4

11.0

ms

Operating

Standby Period

TPLED1

8

320

344

368

s

Standby, no alarm

Local Alarm Period

TPLED2A

8

470

500

530

ms

Local alarm condition

with temporal horn

pattern

TPLED2B

8

625

667

710

ms

Local alarm condition

with continuous horn

pattern

Hush Timer Period

TPLED4

8

10

10.7

11.4

s

Timer mode, no local

alarm

External Alarm

Period

TPLED0

8

LED IS NOT ON

s

Remote alarm only

GLED Indicator

Latched Alarm Period

TPLED3

9

40

43

46

s

Latched Alarm Condition,

LED enabled

Latched Alarm Pulse

Train (3x) Off Time

TOFLED

9

1.25

1.33

1.41

s

Latched Alarm Condition,

LED enabled

Latched Alarm LED

Enabled Duration

TLALED

9

22.4

23.9

25.3

Hours

Latched Alarm Condition,

LED enabled

Smoke Check

Smoke Test Period

with Temporal Horn

Pattern

TPER0A

2

10

10.7

11.4

s

Standby, no alarm

TPER1A

2

1.88

2.0

2.12

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

s

In remote alarm

Note 1:

See timing diagram for Horn Pattern (Figure 5-2).

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.

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