PAW3402 Datasheet, PDF (12/15 Pages) Pixart Imaging Inc. – PS/2 OPTICAL MOUSE SOC

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
*1 _NC
NC ^*14
ENSW1
VDD_5V
BL
1 _BL
Z1 ¹²
Z1
VDD_5V
R1 D1
LED
*C4 OPEN
2 _LED
3 _{OSC_RES}
Z2 ¹¹
Z2 ^COM
BM ^{10 BM}
C5 C2
+
JP1
1 ^VCC
VDD_5V
VDD_5V_10R
4 _VSS
5 _VDD5V
BR ^{9 BR}
DATA ⁸
0.1uF 10uF
R4 SHORT
2 ^GND
3 ^DATA
R6 10 ohm
6 _VREF
CLOCK ⁷
R5 SHORT
4 ^CLK
C1
C3
+
PAW3402
C6 C7
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
U1
*Y1 OPEN
*R3 OPEN
*1 _NC
NC ^*14
VDD_5V
BL1
1 _BL
Z1 ¹²
Z1
R1 D1 LED
2 _LED
Z2 ¹¹
Z2
*C4 OPEN _{3 OSC_RES}
BM ^{10 BM1}
VDD_5V
VDD_5V_10R
4 _VSS
5 _VDD5V
BR ^{9 BR1}
DATA ⁸
R6 10 ohm
6 _VREF
CLOCK ⁷
C1
C3
+
PAW3412
C6
0.1uF 10uF
27pF
VDD_5V_10R
D2
U2
IR
PT
R7 R8 R9
*
*
*
R4 SHORT
R5 SHORT
C7
C5
27pF
0.1uF
VDD_5V
VCC ^JP1
1
GND
2
DATA
3
CLK
4
C2
+
10uF
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)
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PixArt Imaging Inc.
E-mail: [e-mail]
V1.0, Feb. 2008