PixArt Imaging Inc.
PAW3402 / PAW3412
PS/2 Optical Mouse SOC
9. Referencing Application Circuit
9.1 PAW3402 with Mechanical Encoder Input
*Y1 OPEN
U1
VDD_5V_10R
*R3
OPEN
BL
*1
1
2
3
4
5
6
*14
12
11
10
9
ENSW1
Z1
NC
NC
Z1
VDD_5V
R1 D1
VDD_5V
C2
BL
LED
*C4 OPEN
COM
LED
Z2
Z2
C5
0.1uF 10uF
JP1
BM
BR
+
VCC
GND
DATA
CLK
OSC_RES
VSS
BM
1
2
3
4
BR
VDD_5V
VDD_5V_10R
R4
R5
SHORT
SHORT
8
VDD5V
VREF
DATA
CLOCK
R6 10 ohm
7
C1
C3
C6
C7
+
PAW3402
0.1uF 10uF
27pF 27pF
Note:
1. *C4 , *R3 and *Y1 is left for PAW3502 with USB interface
2. PS/2 connector JP1 is suggested to has the pin sequence like this:
VCC, GND, DATA, CLK.
3. R4, R5, C6, C7 are for EMC immunity
Warning:
If PCBA has dual layout for PAW3402 and PAW3502, please DO NOT mount
PAW3402 in PAW3502's pin pads *1 and *14
Figure 11. Application Circuit for PAW3402 (Mechanical Encoder Input)
9.2 PAW3412 with Optical Encoder Input
VDD_5V_10R
*Y1 OPEN
U1
U2
*R3
OPEN
BL1
D2
IR
*1
1
2
3
4
5
6
*14
12
11
10
9
NC
NC
Z1
PT
VDD_5V
R1 D1
Z1
Z2
VDD_5V
BL
LED
*C4 OPEN
LED
Z2
JP1
1
VCC
GND
DATA
CLK
BM1
BR1
R7
*
R8
R9
*
OSC_RES
VSS
BM
*
BR
2
3
4
VDD_5V
VDD_5V_10R
R4
R5
SHORT
SHORT
8
VDD5V
VREF
DATA
CLOCK
R6 10 ohm
7
C1
C3
C6
C7
C5
C2
+
+
PAW3412
0.1uF 10uF
27pF 27pF
10uF
0.1uF
Note:
1. *C4 , *R3 and *Y1 is left for PAW3502 with USB interface
2. PS/2 connector JP1 is suggested to has the pin sequence like this:
VCC, GND, DATA, CLK.
3. R4, R5, C6, C7 are for EMC immunity
4. For resistor value selection, refer to high or low input level
of Z1 and Z2 in the D.C. Electrical Characteristics table.
The recommended value for R7 is 470ohm.
The recommended value for R8/R9 is 5.1Kohm.
Warning:
If PCBA has dual layout for PAW3412 and PAW3502,
please DO NOT mount PAW3412 in PAW3502's pin pads *1 and *14
Figure 12. Application Circuit for PAW3412 (Optical Encoder Input)
All rights strictly reserved any portion in this paper shall not be reproduced, copied or transformed to any other forms without permission.
PixArt Imaging Inc.
E-mail: fae_service@pixart.com.tw
12
V1.0, Feb. 2008
PIXART [ PIXART IMAGING INC. ]
