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2007-05-29
PIR CONTROLLER
PIR CONTROLLER
M7612
一华半导体股份有限公司
MOSDESIGN SEMICONDUCTOR CORP.
PIN DESCRIPTION
Pin No
Pin Name
Description
1
UOU1
First stage OP amp output.
2
NII1
First stage OP amp positive input.
3
II1
First stage OP amp negative input.
4
VREF
Stable reference voltage.
5
VSS
System ground.
6
TB
Time base for：
The delay time of receiving PIR signal to sent a pulse to trigger TRIAC or a high signal to trigger relay.
The delay time = R * C * 32.
The PIR signal patented and accepted only if the signal cycle greater than R * C * 768. When state of
RELAY or TRIAC is changing form active into inactive mode. It takes more than R * C * 4069 , then
system is able to receive PIR signal again.
10K < R < 1M Ohm
100p F ≦ C < 0.1uf ( Reference Diagram 1 )
7
QTEST
For testing only.
8
TCI
To set up the timing of how long TRIAC or RELAY is active.
During the period , if the system receives the PIR signal , then it restarts counting the timing again.
The flash cycle show the beginning of auto mode.
Note：width of TRIAC pulse = R * C * 2
Flash cycle：R * C * 32768
The range for R：4.7K ≦ R < 1M Ohm
C：100pF < C < 0.1uF ( Reference Diagram 2 )
9
CDS
Connected to a CDS for inhibiting RELAY or TRIAC being triggered.
If TRIAC or RELAY has already being triggered by PIR signal and turned into active mode , then CDS can
not inhibit PIR again.
10
TRAIC
To trigger TRIAC , active low.
Sink current：15 mA max.
11
RELAY
To drive relay , active hign.
Sink current：10 mA max.
Source current：10 mA max.
12
ZCD
Detect zero cross of AC line under remote mode function.
13
VDD
Operation voltage：5V , stand by current：0.5 mA
14
II2
2
nd stage OP amp negative input.
15
NII2
2
nd stage OP amp positive input.
16
UOU2
2
nd stage OP amp output.
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