HT7611 データシートの表示（PDF） - Holtek Semiconductor

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HT7611

General Purpose PIR Controller

Holtek Semiconductor 

Trigger Timing

HT761X

Note: 1. The output is activated if the trigger signal conforms to the following criteria:

• More then 3 triggers within 2 seconds.

• A trigger signal sustain duration ≥ 0.34 secs.

• 2 trigger signals within 2 secs with one of the trigger signal sustain ≥ 0.16 secs.

2. The effective comparator output width can be selected to be 24ms or 32ms or

48ms by mask option. The default is 24ms (system frequency=16KHz).

3. The output duration is set by an external RC that is connected to the OSCD pin.

5

24th Mar ’97

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