pt8a262w Pericom Technology Inc, pt8a262w Datasheet - Page 4

• Manufacturer Part Number: pt8a262w
• Description: Pir Sensor Light Switch Controller
• Manufacturer: Pericom Technology Inc

PT0075(04/03)
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Pin Assignment
Pin Description
Figure 2
Table 1
261
10
11
12
13
14
15
16
2
4
Pin/Pad
1
3
5
6
7
8
9
262
10
12
13
14
15
16
11
2
3
4
5
6
7
8
9
1
RELAY
TRIAC
MODE
OSCD
Name
OSCS
OP1N
OP1O
OP2N
OP2O
OP1P
OP2P
GND
CDS
RST
V
V
ZC
TRIAC
MODE
CC
EE
OSCD
OSCS
GND
CDS
V
ZC
CC
PT8A261P/PT8A261W
Ground Ground
Power
Type
I/O
I/O
O
O
O
O
O
I
I
I
I
I
I
I
I
1
2
3
4
5
6
7
8
Top view
Output timing oscillator I/O, connected to an external RC to adjust output duration.
System oscillator I/O, connected to an external RC to set the system frequency. The system
Schmitt input for AC zero crossing detection.
Connected to a CDS voltage divider for daytime/night auto-detection. Low input to this pin
can disable PIR input. CDS is a schmitt trigger input with 5-second input debounce time.
open - auto detection
Chip reset input, active low, kept floating or connected an RC network
Output of first operational amplifier
Output of second operational amplifier
RELAY drive output through an external NPN transistor, active high
TRIAC drive two-pulse output, active negative pulse.
frequency = 16kHz for normal application.
Mode select, connecting to V
Power supply
Internal voltage regulator output, 3.6V with respect to ground. Connected to the drain of
PIR sensor
Non-inverted input of first operational amplifier, connected directly to source of PIR sensor
Inverted input of first operational amplifier
Non-inverted input of second operational amplifier.
Inverted input of second operational amplifier
16
15
14
13
12
11
10
9
OP2O
OP2N
OP2P
OP1O
OP1N
OP1P
RST
V
EE
4
CC
- output always on, connection GND - output always off,
RELAY
MODE
OSCD
OSCS
GND
CDS
PIR Sensor Light Switch Controller
V
ZC
CC
PT8A262P/PT8A262W
Description
1
2
3
4
5
6
7
8
Top view
16
15
14
13
12
11
10
9
OP2O
OP2N
OP2P
OP1O
OP1N
OP1P
RST
V
EE
PT8A261/262
Data Sheet
Ver:5