RE46C166 Просмотр технического описания (PDF) - Microchip Technology

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RE46C166

CMOS Photoelectric Smoke Detector ASIC with Interconnect, Timer Mode and Alarm Memory

Microchip Technology 

RE46C165/6/7/8

AC ELECTRICAL CHARACTERISTICS

AC Electrical Characteristics: Unless otherwise indicated, all parameters apply at TA = -25° to 75°, VDD = 9V,

Typical Application (unless otherwise noted), VSS = 0V.

Parameter

Symbol

Test

Pin

Min

Typ

Max Units Clocks

Conditions

Oscillator Time Base (COSC, ROSC)

Oscillator Period

Oscillator Tolerance

TPOSC

9

TTOLOSC 9

LED Indication (LED)

LED On Time

LED Period

Alarm Memory LED

Pulse Train (3x)

Off Time

TON1

11

TPLED0 11

TPLED1 11

TPLED2 11

TPLED3 11

TPLED4 11

TOFLED 11

Alarm Memory LED

Timer Period

TLALED 11

9.38 10.42 11.46 ms

-10

0

10

%

1 Operating, Note 1

1 Operating

9.4 10.4 11.5 ms

LED IS NOT ON

s

38 43 47

s

450 500 550 ms

9.6 10.7 11.7 s

225 250 275 ms

1.2 1.3 1.5

s

1

—

4096

48

1024

24

127

Operating

Remote alarm only

Standby, no alarm

Local alarm condition

Timer mode, no local alarm

Timer mode, no local alarm

Alarm memory set,

LED enabled

21.5 23.9 26.3 Hours 8257536 Alarm memory set

Detection (STROBE, IRED)

STROBE On Time

TSTON

4

9.4 10.4 11.5 ms

1 Smoke test,

Chamber test

IRED On Time

TIRON

6

94 104 114 µs

0.01 Operating/DIAG, Note 1

Note 1: TPOSC and TIRON are 100% production tested. All other timing is verified by functional testing.

2: See timing diagram for Horn Temporal Pattern in Figure 3-2.

3: See timing diagram for Horn Continuous Pattern in Figure 3-3.

4: During Timer mode, the LED Period is 10.5 seconds. The LED period will return to 43 seconds at the

conclusion of the Timer mode.

 2010 Microchip Technology Inc.

DS22251A-page 7

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