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PAW3402 / PAW3412
PAW3402 /PAW3412 PS/2 OPTICAL MOUSE SOC General Description
PAW3402 / PAW3412 is a CMOS process optical mouse SOC with PS/2 interface that serves as a nonmechanical motion estimation engine for implementing a computer mouse. Features Single 5.0 volt power supply Compatible with Microsoft Intelli 3D PS/2 and IBM PS/2 mouse Precise optical motion estimation technology Complete 2-D motion sensor No mechanical parts Accurate motion estimation over a wide range of surfaces High speed motion detection up to 28 inches/sec High resolution up to 1000 CPI Power saving mode during times of no movement Support three buttons (R, M, L) and three axes (X, Y, Z) Z axis support two kinds of input-- opto-mechanical and mechanical PAW3402 support mechanical input PAW3412 support opto-mechanical input Internal 10% accurate oscillator, external resonator-less Speed 28 inches/sec Power Supply Interface Wide operating supply range 4.5V ~ 5.5V PS/2 Key Specification
Optical Lens 1:1
Acceleration 20g Resolution Frame Rate Operating Current Package 500 / 800 / 1000 3000 frames/sec 12 mA @Mouse moving (Normal) 5 mA @Mouse not moving (Sleep) Shrunk DIP12
Ordering Information
Part Number PAW3402DK PAW3402DK-LH PAW3402DK-TJ PAW3412DK-TE CPI 800 800 1000 500 Sensor Rotate 0 -90 0 0 Wheel Type Mechanical Mechanical Mechanical Opto-Mechanical Device Type 2D3B/3D3B 2D3B/3D3B 2D3B/3D3B 2D3B/3D3B
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1. Pin Configuration 1.1 Pin Description
Pin # Name 1 2 3 4 5 6 7 8 9 10 11 12 BL LED Type IN OUT Definition Button left key input, internal pull-up 50K ohm, press connect to low LED control Connect to resistor input Chip ground Chip power VDD, 5.0V
OSC_RES IN VSS VDD5V VREF CLOCK DATA BR BM Z2 Z1 GND PWR
BYPASS Analog voltage reference I/O I/O IN IN IN IN PS/2 mouse clock line PS/2 mouse data line Button right key input, internal pull-up 50K ohm, press connect to low Button middle key input, internal pull-up 50K ohm, press connect to low Z axis, support mechanical encoder input (internal pull-down 50K ohm) or optical encoder input (needs external pull-down resistor) Z axis, support mechanical encoder input (internal pull-down 50K ohm) or optical encoder input (needs external pull-down resistor)
1.2 Pin Assignment For Sensor Rotate 0
Figure 1. Top View Pinout
Figure 2. Top View of Mouse
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1.3 Pin Assignment For Sensor Rotate -90
Figure 3. Top View Pinout
Figure 4. Top View of Mouse
2. Block Diagram and Operation
LED
LED DRIVE Z-AXIS COUNTER
POWER ON RESET VOLTAGE REGULATOR AND POWER CONTROL CMOS IMAGE SENSOR
VDD 5V POWER VSS
WHEEL
Z1 Z2
BL BUTTON BM BR
DEBOUNCE
DIGITAL SIGNAL PROCESSOR
VREF
VOLTAGE REFERENCE
PS/2 INTERFACE
CLOCK DATA
PS/2 MOUSE CONTROLLER
INTERNAL OSCILLATOR
OSC_RES
Figure 5. Block diagram PAW3402 / PAW3412 is a CMOS process optical mouse SOC with PS/2 interface that serves as a nonmechanical motion estimation engine for implementing a computer mouse. It is based on new optical navigation technology, which measures changes in position by optically acquiring sequential surface images (frames) and mathematically determining the direction and magnitude of movement. The sensor is in a 12-pin optical package and comes with the resolution of 500 / 800 / 1000 counts per inch (cpi) and the rate of motion up to 28 inches per second. It is also featured resonator-less (Internal 10% accurate oscillator) to save customer's BOM cost. PAW3402 / PAW3412 include PS/2 interface so that no mouse controller is needed to interface through PS/2. PAW3402 / PAW3412 can receive command and echo status or data format which are compatible with IBM PS/2 mouse and Microsoft 3D PS/2 mouse.
* The word "PS/2 Mouse", instead of " PAW3402 / PAW3412", is used in the document.
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3. Specifications 3.1 Absolute Maximum Ratings
Exposure to absolute maximum rating may affect device reliability. Symbol Parameter TSTG TA Storage Temperature Operating Temperature Lead Solder Temp ESD VDC VIN DC Supply Voltage DC Input Voltage -0.5 -0.5 Min. -40 -15 Max. 85 55 260 2 5.5 5.5 Unit C C C kV V V All I/O pin For 10 seconds, 1.6mm below seating plane. All pins, human body model MIL 883 Method 3015 Notes
3.2 Recommend Operating Condition
Symbol Parameter TA VDD VN Z R FR Operating Temperature Power Supply Voltage Supply Noise Distance from Lens Reference Plane to Surface Resolution Frame Rate 2.3 500 2.4 800 3000 Min. 0 4.5 5.0 Typ. Max. 40 5.5 100 2.5 1000 Unit C V mV mm CPI frames/s 25 inches/sec @500CPI 16 inches/sec @800CPI inches/sec 13 inches/sec @1000CPI *Base on data rate : 100 report/sec Peak to peak within 0 - 80 MHz Notes
S
Speed
0
28
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3.3 AC Operating Condition
Electrical characteristics over recommended operating conditions. Typical values at 25 C, VDD =5.0 V Symbol Parameters Tmca Tmci Tmdc Tsca Tsci Tsdc Tscd Mouse CLK Active Time Mouse CLK Inactive Time Time that Mouse Sample DATA from CLK Rising Edge System CLK Active Time System CLK Inactive Time Time from DATA Transition to Falling Edge of CLK Time from Rising Edge of CLK to DATA Transition Min. Typ. Max. Unit 40 40 14 40 40 12 28 us us us us us us us Notes
Refer to Figure 9,10
3.4 DC Electrical Characteristics
Electrical characteristics over recommended operating conditions. Typical values at 25 C, VDD =5.0 V Symbol Parameter Type: PWR Supply Current IDD Mouse moving (normal) Supply Current IDD Mouse not moving (sleep) Type: BL, BM, BR RPH Internal Pull-up Resistance Type: Z1, Z2 RPD Internal Pull-down Resistance 50 Only mechanical Z input built-in internal Kohm pull-down resistance, optical Z input needs external pull-down resistance V V Kohm V mA mV IOL= 1mA VOH=2.0V I OL = 25mA Min. Typ. Max. Unit Notes
-
12 5
-
mA mA
-
50
-
Kohm
Type: BL, BM, BR, Z1, Z2 VIH VIL RPH VOL IOH VOL Input High Voltage Input Low Voltage Internal Pull-up Resistance Output Low Voltage Output Pull-up Current Output voltage LOW 2.0 5 1 0.8 0.6 300
Type: CLOCK, DATA
Type: LED
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4. Z and 2D/3D Assembly
Package Lid Lens
Z OBJECT SURFACE
Figure 6. Distance from Lens Reference Plane to Surface
ESD LENS RING
BASE PLATE
Figure 7. 2D Aassembly
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Figure 8. 3D Assembly for Mounting Instructions
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5. PS/2 Command Set Description
There are 16 valid commands that transmit between the system and the PS/2 Mouse. All other commands will cause an FE (Resend) response from the PS/2 Mouse. A second invalid command will cause an FC (error) response from the PS/2 Mouse.
5.1 PS/2 Command Set
Hex Code FF FE F6 F5 F4 F3, XX F2 F0 EE EC EB EA E9 E8, XX E7 E6 Command Reset Resend Set Default Disable Enable Set Sampling Rate Read Device Type Set Remote Mode Set Wrap Mode Reset Wrap Mode Read Data Set Stream Mode Status Request Set Resolution Set Scaling 2:1 Reset Scaling Response FA, AA, 00 XX, (XX, XX) FA FA FA FA, FA FA, 00 FA FA FA FA, XX, XX, XX FA FA, XX, XX, XX FA, FA FA FA
5.2 Set Sampling Rate (F3, XX)
Second Byte Hex Value (XX) 0A 14 28 3C 50 64 C8 Sampling Rate 10/sec 20/sec 40/sec 60/sec 80/sec 100/sec 200/sec
5.3 Status Request (E9)
Byte 1 Bit 0 1 2 3 4 5 6 7 0-7 0-7 Symbol BR BM BL 0 Scaling Enabled Remote mode 0 Resolution Sampling rate Description 1 = Right button pressed. 1 = Middle button pressed. 1 = Left button pressed. Always = 0, reserved for future use. 0 = Scaling 1:1; 1 = Scaling 2:1. 0 = Disabled; 1 = Enabled. 0 = Stream mode; 1 = Remote mode. Always=0, reserved for future use. Current resolution setting. Bit 0=LSB. Current sampling rate. Bit 0=LSB.
2 3
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6. Data Format
The PS/2 Mouse support two different PS/2-compatible packet formats, depending upon the following operational modes: * * Standard 2D mode (2D3B) Standard 3D mode (3D3B)
6.1 Standard 2D Mode Format
A standard 2D PS/2-compatible mouse motion report consists of a 3-byte packet defined as below. Byte Bit 0 1 2 3 4 5 6 7 0-7 0-7 Symbol BL BR BM 1 Xs Ys XOV YOV Description 1 = Left button pressed 1 = Right button pressed Always = 0, reserved for middle button Always = 1, reserved for future use X data sign, 1 = negative Y data sign, 1 = negative X data overflow, 1 = overflow Y data overflow, 1 = overflow X data (D0 - D7). A positive value indicates motion to the right; a X0~X7 negative value indicates motion to the left. Bit 0=LSB. Y data (D0 - D7), A positive value indicates device motion upward; a Y0~Y7 negative value indicates motion downward. Bit 0=LSB.
1
2 3
6.2 Standard 3D Mode Format
A standard 3D PS/2-compatible mouse motion report consists of a 4-byte packet defined as below. Byte Bit 0 1 2 3 4 5 6 7 0-7 0-7 0-7 Symbol BL BR BM 1 Xs Ys XOV YOV Description 1= Left button pressed 1 = Right button pressed 1= Middle button pressed Always = 1, reserved for future use X data sign, 1 = negative Y data sign, 1 = negative X data overflow, 1 = overflow Y data overflow, 1 = overflow X data (D0 - D7). A positive value indicates motion to the right; A X0~X7 negative value indicates motion to the left. Bit 0=LSB. Y data (D0 - D7). A positive value indicates device motion upward; A Y0~Y7 negative value indicates motion downward. Bit 0=LSB. Z-wheel motion data (D0 - D7). A positive value indicates device Z0~Z7 motion downward; a negative value indicates motion upward. The Z0Z7 limit value is 7. Bit 0=LSB.
1
2 3 4
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7. Mouse Mode Selection
The Set Sampling Rate command is used to set the device operating modes. Whenever the mouse received command 'FF', it will reset to standard mode (2D3B) mode. After power-on reset is initiated, the mouse is set to standard PS/2 mode. The Device ID is available through the PS/2 Read Device Type (0xF2) command. For a device in standard 2D mode, the device will report an ID of 0x00. For a device in standard 3D mode, the device will report an ID of 0x03. Mode Standard 2D mode (2D3B) Standard 3D mode (3D3B) Device ID 0x00 0x03
Standard 3D Mouse (3D3B) Command Sequence After Reset, the device will be in standard 2D mode. By sending the Set Sampling Rate command series as follows, the device is set to standard 3D mode. Command F3 C8 F3 64 F3 50 F2 Response FA FA FA FA FA FA FA, 03
Notice that the Set Sampling Rate commands are valid, and the device report rate will be the value of the last command; that is, 0x50 after this series of commands.
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8. PS/2 Data Transmission 8.1 Mouse Send Data Out to Host
When the mouse is ready to transmit data, it must first check for mouse "inhibit" or system "request to send" status on clock and data lines. If CLK is low (inhibit status), data shall be continuously updated in the mouse and no transmissions shall be started. If CLK is high and DATA is low (request-to-send), data is updated. Data is received from the system and no transmission are started by the PS/2 Mouse until CLK and DATA both high. If CLK and DATA are both high, the transmission is ready. DATA is valid prior to the falling edge of CLK and beyond the rising edge of CLK. During transmission, The PS/2 Mouse check for line contention by checking for an inactive level on CLK at intervals not to exceed 100 microseconds. Contention occurs when the system lowers CLK to inhibit the PS/2 Mouse output after PS/2 Mouse has started a transmission. If this occurs prior to the rising edge of the tenth clock (parity bit), The PS/2 Mouse internally store the data package in its buffer and return DATA and CLK to an active level. If the contention does not occur by the tenth clock, the transmission is complete. Following a transmission, the system can inhibit the PS/2 Mouse by holding CLK low until it can service the input or until the system receives a request to send a response if necessary.
Tsca 1st CLK 2nd CLK 10 th CLK 11th CLK
CLK
Tsdc Tscd Tsci Tpi
.........
DATA
Start bit
.........
Bit0 - Bit7
...
Parity bit Stop bit
.........
Figure 9. Mouse send data out to host
8.2 Mouse Receive Data from Host
System first check to see if the PS/2 Mouse is transmitting data. If the PS/2 Mouse is transmitting, the system can override the output forcing CLK to an inactive level prior to the tenth clock. If the PS/2 Mouse transmission is beyond the tenth clock, the system receives the data. If the PS/2 Mouse is not transmitting or if the system chooses to override the output, the system force CLK to an inactive level for a period of not less than 100 microseconds while preparing for output. When the system is ready to output "0" start bit, it allows CLK to go to active level. If "request-to-send" is detected, the PS/2 Mouse clocks in 11 bits. Following the tenth clock, the PS/2 Mouse checks for an active level on the DATA line, and if found, force DATA low (line control bit), and clock once more. If occurs framing error, the PS/2 Mouse continue to clock until DATA is high, then clock the line control bit and request a resend. For each system command or data transmission to the PS/2 Mouse that requires a response, the system must wait for the PS/2 Mouse to response before sending its next output.
Tmca 1 st CLK 2 nd CLK 9 th CLK 10 th CLK 11 th CLK
CLK
Inhibit
......
Tmdc Tmci Tmlc
DATA
Start bit
.........
Bit0 - Bit7
...
Parity bit Stop bit Line control bit
...
Figure 10. Mouse Receive Data from Host
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9. Referencing Application Circuit 9.1 PAW3402 with Mechanical Encoder Input
*Y1 OPEN
U1
VDD_5V_10R NC Z1 Z2 BM BR DATA CLOCK
*14 12 11 10 9 8 7
*R3 VDD_5V R1 D1 LED *C4 VDD_5V R6
OPEN BL
*1 1 2
NC BL LED OSC_RES VSS VDD5V VREF
ENSW1 Z1 Z2 BM BR R4 R5 C6 27pF C7 27pF SHORT SHORT COM C5
+
VDD_5V C2
JP1
OPEN
3 4
VDD_5V_10R 10 ohm C1
+
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 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
U1
2
+
1 2 3 4
VCC GND DATA CLK
0.1uF 10uF
5 6
C3
PAW3402
10uF
*Y1 OPEN NC Z1 Z2 BM BR DATA CLOCK
*14 12 11 10 9 8 7 Z1 Z2
*R3 VDD_5V R1 D1 LED *C4 VDD_5V R6
OPEN BL1
*1 1 2
NC BL LED OSC_RES VSS VDD5V VREF
D2 IR
3 1
U2 PT VDD_5V R9 * VCC JP1 1 GND 2 DATA 3 CLK 4 C2
+
OPEN
3 4
BM1 BR1 R4 R5 C6 27pF C7
R7 *
R8 *
VDD_5V_10R 10 ohm C1
+
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)
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+
5 6
SHORT SHORT C5 0.1uF
C3
PAW3412
10uF
27pF
10uF
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10. Recommended Value for R1
Radiometric intensity of LED Bin limits (mW/Sr at 20mA) LED Bin Grade N P Min. 14.7 17.7 Typ. Max. 17.7 21.2 25.4
Q 21.2 Note: Tolerance for each bin will be 15% R1 value (ohm), VDD=5.0V LED Bin Grade N P Q Min. 43 43 43 Typ. 56 56 56
Max. -
11. Z-axis Waveform
Figure 13. Z-axis Waveform
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12. Package Information 12.1 Package Outline Drawing
12 11 10 9 8 7
1
2
3
4
5
6
11.68 0.460
3.20 0.126 1.42 0.056
10.16 0.400
1.02 0.040
5.08 0.200 0.254 0.010 0.457 0.018 1.778 0.070 Max. 12 14.22 +/- 0.2 0.560 +/-0.0079 4.064 0.160 3 4 5 6
6.223 0.245 4.826 0.190 1 2
5.461 0.215
5.080 0.200
NOTES: 1. All dimensions in MM/INCH. 2. Dimensions tolerance: +/- 0.10mm 3. Maxmumflash: +0.2mm
4.55 0.179 12 11 10 9 8 7
5.56 0.2189
0.80 0.031
Figure 14. Package Outline Drawing
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12.2 Recommended PCB Mechanical Cutouts and Spacing
4.064 0.160 1 2 3 4 5 6 7.544 0.297 16.942 0.667 12.877 0.507 9.068 0.357
1.778 0.070
6.985 0.275 8.89 0.35
10.221 0.402
0.711 0.028
1.194 0.047
12 0.711 0.028
11
10
9
8
7 27.94 1.100 3.251 0.128
All Dimension : mm/inch Back Side
Figure 15. Recommended PCB Mechanical Cutouts and Spacing
13. Update History
Version V0.1 Update Creation, Preliminary 1st version Date 02/01/2008
Note: The Part No. of the Mouse Product with Prefix "PAN" shall NOT be made, sold, offered to sell, imported or used in or into USA, Canada, Japan and EU. For "PAN", PixArt has only gained territory-limited patent license from Avago. Avago reserve right to take legal action against our customers who fails to comply the above term. PLEASE NOTE THAT PixArt will NOT defend, indemnify, or provide any assistance to our customers who fail to comply the term. IF YOU DO NOT AGREE THE TERM, PIXART WILL NOT DELIVER "PAN" PRODUCTS TO YOU.
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