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Solid-State Optical Mouse Sensor with PS/2 and Quadrature Outputs Technical Data
HDNS-2000
Features
* Optical Navigation Technology - Superior precision and smooth navigation optimized for desktop and portable mouse applications - No mechanical parts, provides high reliability and needs no maintenance * Complete Compact 2-D Motion Sensor - Easy implementation and design flexibility - Replaces mechanical ball system in traditional mice * Two Selectable Output Modes - Standard 3-Button PS/2 Output Mode - Two Channel Quadrature Output Mode (X and Y Direction) which emulates encoder phototransistors * High Speed Motion Detection - Accurately measures up to 12 inches per second at 400 cpi
* Accurate Navigation over a Wide Range of Surfaces - Enables mouse to be used with or without a mouse pad * Power Conservation Mode during No Motion * Compatible with High Volume Manufacturing Processes - Requires no precision optical alignment - Wave solderable
Applications
* Computer Mice for Desktop PCs, Workstations and Portable Computers * Integrated Input Devices
Description
The HDNS-2000 is a low-cost reflective optical sensor that provides a non-mechanical tracking engine for implementing a computer mouse. It is based on 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 mounted in a plastic optical package and designed to be used with the HDNS-2100 (Lens), HDNS-2200 (LED Assembly Clip), and HLMP-ED80 (High Light Output 639 nm LED), providing a complete and compact tracking engine. This optical tracking engine has no moving parts and requires no precision optical alignment enabling high volume system assembly. The HDNS-2000 offers a PS/2 or quadrature output mode for interface flexibility. Resolution is specified as 400 cpi at rates of motion up to 12 inches per second.
CAUTION: It is advised that normal static precautions be taken in handling and assembly of this component to prevent damage and/or degradation which may be induced by ESD.
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Theory of Operation
The HDNS-2000 is based on Optical Navigation Technology. It contains an Image Acquisition System (IAS), Digital Signal Processor (DSP), and a mode selectable PS/2 or quadrature output converter. The IAS acquires images of microscopic
surface images via the lens and illumination system provided by the HDNS-2100, HDNS-2200 and the HLMP-ED80. These images are further processed by the DSP to determine direction and distance of motion. The DSP generates a stream of x and y relative displacement values
which are then communicated to the output converter. This converter provides a PS/2 3-Button output, replacing existing mouse microcontrollers, or two channel quadrature output, for direct interface to existing mouse microcontrollers.
IMAGE ACQUISITION SYSTEM
DIGITAL SIGNAL PROCESSOR
PS/2 or QUAD OUTPUT CONVERTER
Figure 1. HDNS-2000 Block Diagram.
Ordering Information
Specify Part Number as follows: HDNS-2000 = Sensor IC in a 16-pin optical plastic package, 20 per tube.
YYWW H2000
PIN 1 22.30 (0.878)
0.99 (0.039) 3.18 (0.125)
9.10 (0.358) 5.15 (0.203)
LEAD WIDTH 0.50 (0.020) LEAD OFFSET 1.27 (0.050) 2.54 LEAD PITCH (0.100)
1.42 (0.056) KAPTON TAPE
0.25 (0.010) 5 TYP. 6.17 (0.243) 12.34 (0.486)
6.02 (0.237) 13.38 (0.527)
4.55 (0.179)
5.60 (0.220)
0.80 (0.031)
DIMENSIONS IN MILLIMETERS (INCHES)
Figure 2. HDNS-2000 Sensor Package Outline Drawing.
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Pinout
Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Name PS2_C MODE/XA RB/XB MB/YB LB/YA XY_LED VDD3 REFB OSC1 GND OSC2 GND VDD5 VDD5 NRESET PS2_D PS/2 mode PS/2 Interface Clock Select PS/2 mode Right Button input Middle Button input Left Button input LED control output 3.3 VDC input Internal reference Oscillator input Ground Oscillator output Ground 5 VDC input 5 VDC input NRESET PS/2 Interface Data Quadrature mode PS/2 Interface Clock XA output XB output YB output YA output LED control output 3.3 VDC input Internal reference Oscillator input Ground Oscillator output Ground 5 VDC input 5 VDC input NRESET PS/2 Interface Data
2D Assembly Drawing of HDNS-2000
Shown with HDNS-2100, HDNS-2200, and HLMP-ED80. Agilent provides an IGES file drawing describing the base plate molding features for lens and PCB alignment. See HDNS-2100 Technical Data Sheet for more information.
44.29 (1.744)
+x
19.10 (0.752)
+y BASE PLATE ESD LENS RING
PLASTIC SPRING
CLIP
14.58 (0.574) SURFACE IS 0 REF. SENSOR PCB
13.82 (0.544)
10.58 (0.417)
7.45 (0.293)
BASE PLATE ALIGNMENT POST
DIMENSIONS IN MILLIMETERS (INCHES)
Figure 3.
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Exploded View Drawing
HDNS-2200 (CLIP)
HLMP-ED80 (LED) HDNS-2000 (SENSOR)
CUSTOMER SUPPLIED PCB
HDNS-2100 (LENS)
CUSTOMER SUPPLIED BASE PLATE WITH RECOMMENDED ALIGNMENT FEATURES PER IGES DRAWING
Figure 4.
Typical Application using PS/2 Output
3.3 V REGULATOR LP2950ACZ-3.3
1.0 F R1
0.1 F 7 VDD3 8 REFB 0.1 F
13 14 PS/2 CONNECTOR 5 3 1 2 6 4 +5 V (4) CLK (5) DATA (1) GND (3) 2
VDD5 VDD5 MODE/XA
R1 VALUE (OHMS) 68.9 68.9 68.9 68.9 78.9 93.1 113 137 169
LED BIN K L M N P Q R S T
HLMP-ED80
BUTTONS
R
M
L
SURFACE 6 1 PS2_C 2N3904 XY_LED 9 16 PS2_D OSC1 3 HDNS RB 18.432 MHz 2000 11 4 MB 18.432 MHz CERAMIC RESONATOR SUCH AS OSC2 AVX KBR-18-43-MSA or 15 5 NRESET MURATA CSA18.43MXZ040 LB GND GND 0.22 F 10 12
INTERNAL IMAGE SENSOR HDNS-2000 LENS
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Typical Application using Quadrature Output
2.7 2N3906 3.3 V REGULATOR LP2950ACZ-3.3 R1 VALUE (OHMS) 68.9 68.9 68.9 68.9 78.9 93.1 113 137 169 LED BIN K L M N P Q R S T
1.0 F R1
1.5 M
0.1 F
4.7 F
0.1 F
7.5 K 0.33 F 9 12 CEXT VDD 5 P1.0 P0.1 2 VDD D- D+ GND SHLD 6 MHz 11 XTALOUT
P0.4 P0.5 P1.2 VSS VPP P0.7 P0.6
13 14 2
VDD5 VDD5 MODE/XA
7 VDD3 8 REFB
0.1 F
HLMP-ED80 XY_LED 6 9 18.432 MHz OSC2 11 18.432 MHz CERAMIC RESONATOR SUCH AS AVX KBR-18-43-MSA or MURATA CSA18.43MXZ040 SURFACE 2N3904
13 D- 14 D+ 10 XTALIN
CYPRESS CY7C63000A-PC
P0.0 1 3 P0.2 4 P0.3 16 P1.1 P0.2 15
3 XB 4 YB 5 YA 15 NRESET
HDNS 2000
OSC1
GND GND PS2_C PS2_D
10
12
1
16
20
19
6
7
8
18
17 PANASONIC EVQ SERIES ENCODER
BUTTONS L
R
M
INTERNAL IMAGE SENSOR
HDNS-2000 LENS
NOTES: 1) DUE TO THE CYPRESS IMPLEMENTATION OF USB SUSPEND MODE SUPPORT, THE NRESET PIN OF THE HDNS-2000 MUST BE RESET USING A LINE FROM THE CYPRESS CHIP. THE REASON FOR THIS IS THAT THE CYPRESS CHIP DOES NOT CONFIGURE THE PORT INPUT PINS UNTIL AFTER IT HAS RECEIVED A BUS RESET FROM THE USB PORT. THE UNCONFIGURED INPUT PORT PINS PRESENT A 16 K PULLUP TO VCC. IF A CAP IS USED ON NRESET (PIN 15), THIS PULLUP WILL RESULT IN THE HDNS-2000 SEEING A HIGH ON THE MODE PIN AND POWERING UP IN THE PS/2. 2. THE QUADRATURE INPUT PINS OF THE CYPRESS PART MUST BE PROGRAMMED TO BE HI-Z, INSTEAD OF THE NORMAL CURRENT PULLDOWNS. THIS ENSURES THAT THE HDNS-2000 WILL BE ABLE TO PULL THE QUADRATURE LINES HIGH OVER ALL CONDITIONS OF VOLTAGE AND TEMPERATURE.
Recommended LED Bin Table
LED Bin Category R1 Value K L 69.8 69.8 M 69.8 N 69.8 P 78.7 Q 93.1 R 113 S 137 T 169
Note: The 69.8 W resistor for bins K through N is determined by the absolute maximum rating of 50 mA for the HLMP-ED80. The other resistor values for other bins will guarantee good signals with reduced power.
Absolute Maximum Ratings
Parameter Storage Temperature Operating Temperature Lead Solder Temperature Symbol TS TA Min. -40 0 Max. 85 40 260 Units C C C Notes
For 10 seconds, 1.6 mm below seating plane (see HLMP-ED80 data sheet for LED solder specifications)
Supply Voltage Supply Voltage ESD Input Voltage Input Voltage
VDD3 VDD5 VIN VIN
-0.5 -0.5 -0.5 -0.5
3.6 5.5 2 VDD5+0.5 VDD3+0.5
V V kV V V
All pins, Human Body Model All I/O except OSC1 and OSC2 OSC1 and OSC2
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Recommended Operating Conditions
Parameter Symbol Operating Temperature TA Supply Voltage VDD3 Supply Voltage VDD5 Clock Frequency CLK Resonator Impedance XRES Reset Capacitor C RESET Distance from lens foot A reference plane to surface Speed S Acceleration Light level onto IC ACC IRRINC Min. 0 3.15 4.25 17.4 0.001 2.3 0 0 0 40 Typ. 3.3 5.0 18.432 0.22 2.4 Max. 40 3.45 5.5 18.7 40 10.0 2.5 12 30 0.15 25000 Units C V V MHz F mm in/sec cm/sec g mWm2 Notes
Set by ceramic resonator
Dimension A on HDNS-2100 data sheet
= 639 nm
DC Electrical Specifications
Electrical Characteristics over recommended operating conditions. Typical values at 25C, VDD3=3.3, VDD5=5.0 Parameter Supply Current (mouse moving) Supply Current (mouse moving) Supply Current (mouse not moving) Input Low Voltage Input High Voltage Output Low Voltage (LED) Output Low Voltage (XA,XB,YA,YB) Output High Current (XA,XB,YA,YB) Output High Current (LED) Input Pull-up (RB,MB,LB) Output Low Voltage (PS/2) Output Pullup Current (PS/2) Reset Pullup Current Symbol IDD3 IDD5 IDD5 VIL VIH VOL VOL IOH IOHBD IPU VOL IOH IRESET Min. Typ. 9.3 4.7 1.9 Max. 15.5 9.5 0.8 2 0.3 100 1.5 100 300 5 300 3.1 300 0.41 625 10 0.5 0.5 600 6 600 0.5 1500 20 Units mA mA mA V V V V A mA A V A A Notes Pin 6=0.6 V Pin 6=0.6 V
IOL=2 mA IOL=4 mA VOH=2.1 V VBE=0.6 V VIN=0.8 V VOL=20 mA VOH=2.0 V VNRESET=2.0 V
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I/O Specifications PS/2 Command Set Implementation
The following commands are implemented. All other commands will cause an FE (resend) response from the HDNS-2000. A second invalid command will cause an FC (error) response from the HDNS-2000. (HEX COMMAND) Mnemonics for and Response Command and Bytes Response Bytes FF FA AA 00 FF ACK ID DT FE nn.. F6 FA F5 FA F4 FA F3 FA nn FA FE nn.. F6 ACK F5 ACK F4 ACK F3 ACK nn ACK Valid Values and Default Value after Software or Hardware Reset
Mnemonic for Command RESET RESEND SET_DFS DISABLE ENABLE SET_SAMPLING
Description Soft reset ID=AA DT=0 Resend last byte (i.e. ACK) or Packet Default Setting Disable stream mode Enable stream mode Set sampling rate
{default mode} {0A 14 28 3C 50 64 C8} 10 20 40 60 80 100 200 reports/ second
READ_DT ECHO
F2 FA 00 EE FA
F2 ACK DT EE ACK
NO_ECHO READ_DATA SET_STREAM
EC FA EB FA nn nn nn EA FA
EC ACK EB ACK nn nn nn EA ACK
Responds with DT=00 Echo all further commands until NO_ECHO or RESET Respond to following commands normally Request a data packet Respond with data packets at the sample rate Data only sent on READ_DATA Request status packet Pseudo Log Linear Set resolution For test purposes only
See IBM PS/2 Mouse Technical Reference {default mode}
SET_PROMPT STATUS SET_SCALE LIN_SCALE SET_RES DISABLE_TEST
F0 FA E9 FA nn nn nn E7 FA E6 FA E8 FA nn FA E8 FA AA FE
F0 ACK E9 ACK nn nn nn E7 ACK E6 ACK E8 ACK nn ACK E8 ACK AA RESEND
See IBM PS/2 Mouse Technical Reference {default mode} {00 01 02 03} 2 4 8 16 Counts/mm Default mode after hardware reset.
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PS/2 Mode Output Waveforms Host Sending Data Timing Diagram
I/O INHIBIT 1ST CLK 2ND CLK 9TH CLK 10TH CLK 11TH CLK
CLK
(5) T1 T2 T3 DATA (1) START BIT BIT 0 (2) PARITY BIT (2) (3) STOP BIT (4)
NOTES: 1) THE MOUSE CHECKS THE DATA LINE. IF THE LINE IS LOW, THE SYSTEM HAS DATA TO TRANSMIT. THE DATA LINE IS SET INACTIVE WHEN THE START BIT (ALWAYS 0) IS PLACED ON THE DATA LINE. 2) THE MOUSE SAMPLES THE DATA LINE FOR EACH BIT WHILE THE CLK LINE IS HIGH. DATA MUST BE STABLE WITHIN 1 MICROSECOND AFTER THE RISING EDGE OF THE CLK LINE. 3) THE MOUSE CHECKS FOR A HIGH STOP BIT AFTER THE 10TH CLK. IF THE DATA LINE IS LOW, THE MOUSE CONTINUES TO CLOCK UNTIL THE DATA LINE BECOMES HIGH, THEN CLOCKS THE LINE-CONTROL BIT, AND AT THE NEXT OPPORTUNITY SENDS A RESEND COMMAND TO THE SYSTEM. 4) THE MOUSE PULLS THE DATA LINE LOW, PRODUCING THE LINE-CONTROL BIT. 5) THE HOST CAN PULL THE CLK LINE LOW, INHIBITING THE MOUSE.
TIMING PARAMETER T1 T2 T3
DESCRIPTION DURATION OF CLK HIGH DURATION OF CLK LOW TIME FROM FALLING CLK TRANSITION, TO DATA TRANSITION HOST SENDING DATA TIMING
MIN. TIME 30 SEC 30 SEC 0 SEC
MAX. TIME 50 SEC 50 SEC 30 SEC
Host Receiving Timing Diagram
1ST CLK T3 T1 T2 BIT 0 BIT 1 BIT 2 PARITY BIT T4 T5 STOP BIT 2ND CLK 3RD CLK 10TH CLK 11TH CLK
CLK
(1, 2)
DATA START BIT
NOTES: 1) THE HOST CAN HOLD THE CLOCK SIGNAL LOW TO INHIBIT THE NEXT TRANSMISSION. 2) THE HOST RAISES THE CLOCK LINE TO ALLOW THE NEXT TRANSMISSION. 3) ALL TIMES GIVEN BELOW ASSUME AN 18.432 MHz RESONATOR AND ARE DEPENDENT UPON ITS ACCURACY.
TIMING PARAMETER T1 T2 T3 T4 T5
DESCRIPTION TIME FROM DATA TRANSITION TO FALLING EDGE OF CLK TIME FROM RISING EDGE OF CLK TO DATA TRANSITION DURATION OF CLK LOW DURATION OF CLK HIGH TIME TO MOUSE INHIBIT AFTER CLOCK 11 TO ENSURE THE MOUSE DOES NOT START ANOTHER TRANSMISSION HOST RECEIVING DATA TIMING
MIN. TIME 5 SEC 5 SEC 30 SEC 30 SEC 0 SEC
MAX. TIME 25 SEC 25 SEC 50 SEC 50 SEC 50 SEC
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Quadrature Output Mode Waveform
The 2 channel quadrature outputs are 5 V CMOS outputs. The Delta X count is used to generate the XA and XB quadrature signals. The Delta Y count is used to generate the YA and YB quadrature signals. Delta X,Y counts are in the range of +7 to -7 counts of motion and new Delta X,Y values are generated at a rate of 1500 Hz. The quadrature signals can change at a maximum rate of 12.5 kHz.
XB
80 s
80 s
XA
80 s
80 s
80 s
80 s
EXAMPLE QUADRATURE OUTPUT WAVEFORM (+X MOTION)
AC Electrical Specifications
Electrical characteristics over recommended operating conditions. Typical values at 25C, VDD3=3.3, VDD5=5.0, A=2.4 mm, CLK=18.432 MHz Parameter Symbol PS/2 baud rate Fps2 PS/2 data transition delay T2 after PS/2_C rising edge PS/2 motion report rates Motion scale factor Power up delay Min. 10 10 Typ. 12.5 20 100 400 100 Max. 15 25 Units Kbaud s reports/sec counts/inch ms Notes See PS/2 Timing Diagrams See PS/2 command settings CRESET=0.22 F
Typical Performance Characteristics
Typical Performance of HDNS-2000 assembled as shown in Figure 3 with HDNS-2100 Lens, HNDS-2200 LED Assembly Clip, and HLMP-ED80.
450
AVERAGE ERROR (% OF TRAVEL)
RESOLUTION (COUNTS/INCH)
10 9 8 7 6 5 4
WOOD (WALNUT) RECOMMENDED OPERATING REGION PAPER FILE FOLDER WHITE LAMINATED DESKTOP
400 350 300 250 200 150 100 50 0 2.0 2.2 2.4 2.6 2.8 3.0 3.2 RECOMMENDED DISTANCE FROM LENS FOOT REFERENCE PLANE TO SURFACE
3 2 1 0 2.0 2.2 2.4
BLACK CLOTH MOUSE PAD
2.6
2.8
3.0
3.2
DISTANCE FROM HDNS-2100 LENS FOOT REFERENCE PLANE TO SURFACE (mm)
DISTANCE FROM HDNS-2100 LENS FOOT REFERENCE PLANE TO SURFACE (mm)
Figure 5. Typical Resolution vs. Assembly Height.
Figure 6. Typical Error vs. Assembly Height.
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1.2
RELATIVE RESPONSIVITY
70
TRAVEL IN y DIRECTION (mm)
60 57 50 40 30 20 10 0 0 10 20 30 40 50 60
TRUE REPORTED
1.0 0.8 0.6 0.4 0.2 0 450
550
650
750
850
950
TRAVEL IN x DIRECTION (mm)
WAVELENGTH (nm)
Figure 7. Typical Reported Path vs. True Path.
Figure 8. Typical Responsivity vs. Wavelength.
www.semiconductor.agilent.com Data subject to change. Copyright (c) 2000 Agilent Technologies, Inc. Obsoletes 5968-7179E (11/99) 5980-1088E (5/00)
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