PIXART ADNS-5050

ADNS-5050
Optical Mouse Sensor
Data Sheet
Description
Features
The ADNS-5050 is a mainstream, small form factor optical mouse sensor. It is a user-friendly product with many
built-in features and optimized for LED-based corded
products.
 Small form factor, pin-to-pin compatible with
ADNS-5020-EN
The ADNS-5050 is capable of high-speed motion detection – up to 30ips and 8g. In addition, it has an on-chip
oscillator and built-in LED driver to minimize external
components. Frame rate is also adjusted internally.
 High speed motion detection at 30 ips and up to 8g
 Register-to-register compatible with ADNS-5020-EN
 Built-in LED driver for simpler circuitry
 Self-adjusting frame rate for optimum performance
 Internal oscillator – no clock input needed
The ADNS-5050 along with the 5100-001 lens, LED clip
and HLMP-EG3E-xxxxx LED form a complete and compact mouse tracking system. There are no moving parts,
which mean high reliability and less maintenance for the
end user. In addition, precision optical alignment is not
required, facilitating high volume assembly.
 Default 500 cpi resolution, adjustable from 125 to 1375
cpi via 125 cpi step
The sensor is programmed via registers through a threewire SPI interface. It is housed in an 8-pin staggered dual
in-line package (DIP).
Applications
Theory of Operation
 Operating voltage: 5V nominal
 Three-wire serial interface
 Only 4 capacitors and no transistor required
 Optical Mice
 Optical trackballs
 Integrated input devices
The ADNS-5050 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 ADNS-5050 contains an Image Acquisition System
(IAS), a Digital Signal Processor (DSP), and a three wire serial port.
The IAS acquires microscopic surface images via the lens
and illumination system. These images are processed by
the DSP to determine the direction and distance of motion. The DSP calculates the Δx and Δy relative displacement values.
An external microcontroller reads the Δx and Δy information from the sensor serial port. The microcontroller then
translates the data into PS2 or USB signals before sending
them to the host PC.
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PixArt Imaging Inc.
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PixArt Imaging Inc.
ADNS-5050 Optical Mouse Sensor
Pinout of ADNS-5050 Optical Mouse Sensor
Pin
Name
Description
I/O type
1
SDIO
Serial Port Data Input and Output
I/O
2
XY_LED
LED Control
O
3
NRESET
Reset Pin (active low input)
I
4
NCS
Chip Select (active low input)
I
5
VDD5
Supply Voltage
Power
6
GND
Ground
Ground
7
REGO
Regulator Output
O
8
SCLK
Serial Clock Input
I
Date Code
4
5
3
6
2
7
1
8
Lot Code
Product Number
Item
Marking
Product Number
A5050
Remarks
Date Code
XYYWWZ
X = Subcon Code
YYWW = Date Code
Z = Sensor Die Source
Lot Code
VVV
Numeric
Figure 1. Package outline drawing (top view).
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PixArt Imaging Inc.
ADNS-5050 Optical Mouse Sensor
Product
Number
Date Code
Features for
Illustration only
9.90
0.390
9.10
0.358
3.21
0.126
4.30
0.169
5.15
0.203
12.85
(At shoulder)
0.506
Lot Code
Pin 1
±
90
1.00
Lead offset
0.039
0.50
0.020
(2.54)
0.100
∅ 5.60
12.85 ± 0.50
(At lead tip)
0.506 ± 0.020
2.00
0.079
(0.04)
0.002
Lead pitch
3q
Lead width
Pin 1
0.220
4.55
0.179
Protective
Kapton Tape
Section A-A
A
A
∅ 0.80
0.031
Clear Optical Path
4.45
0.175
Notes:
1. Dimensions in millimeter / inches.
2. Dimensional tolerance: ± 0.1mm.
3. Coplanarity of leads: 0.1mm.
4. Lead pitch tolerance: ± 0.15mm.
5. Non-cumulative pitch tolerance: ± 0.15mm.
6. Angular tolerance: ± 3q
7. Maximum flash: 0.2mm.
8. Brackets () indicate reference dimension.
9. Document Number: LED_DIFF_8B_PKG_002
Figure 2. Package outline drawing
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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PixArt Imaging Inc.
ADNS-5050 Optical Mouse Sensor
Overview of Optical Mouse Sensor Assembly
PixArt Imaging provides an IGES file drawing describing the base plate molding features for lens and PCB
alignment.
The ADNS-5050 sensor is designed for mounting on a
through-hole PCB, looking down. There is an aperture
stop and features on the package that align to the lens.
The ADNS-5100-001 lens provides optics for the imaging
of the surface as well as illumination of the surface at the
optimum angle. Features on the lens align it to the sensor,
base plate, and clip with the LED.
The LED clip holds the LED in relation to the lens. The LED
must be inserted into the clip and the LED’s leads formed
prior to loading on the PCB.
The HLMP-EG3E-xxxxx LED is recommended for illumination.
12.85
(0.506)
10.35
(0.407)
7.56
(0.298)
6.29
(0.248)
5.02
(0.198)
OPTIONAL HOLE FOR
ALIGNMENT POST, IF USED
2.25
(0.089)
0.25
(0.010)
31.50
(1.240)
26.67
(1.050)
14.44
(0.569)
0
(0)
24.15 25.00
(0.951) (0.984)
3X … 3.00
(0.118)
14.94
CLEAR ZONE (0.588)
2X … 0.80
(0.031)
1.00
(0.039)
PIN
#1
2.00
(0.079)
HOLE PITCH
DISTANCE
2.00
(0.079)
13.06
(0.514)
8X … 0.80
(0.031)
OPTICAL CENTER
0
(0)
1.37
(0.054)
6.30
(0.248)
11.22
(0.442)
12.60
(0.496)
ALL DIMENSIONS IN MILLIMETERS (INCHES).
Figure 3. Recommended PCB mechanical cutouts and spacing.
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ADNS-5050 Optical Mouse Sensor
33.45
(1.317)
TOP VIEW
13.10
(0.516)
BASE PLATE
DIMENSIONS IN mm (INCHES)
CROSS SECTION SIDE VIEW
10.58
(0.417)
7.45
(0.293)TOP PCB to SURFACE
PCB
2.40 BOTTOM of LENS FLANGE to SURFACE
(0.094)
SENSOR
0.43
(0.017)
LED CLIP
LENS
LED
NAVIGATION SURFACE
BASE PLATE
Figure 4. 2D Assembly drawing of ADNS-5050 (top and side views).
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ALIGNMENT POST
(OPTIONAL)
PixArt Imaging Inc.
ADNS-5050 Optical Mouse Sensor
LED
LED CLIP
SENSOR
CUSTOMER
SUPPLIED PCB
LENS (SHOWING
ADNS-5100-001)
CUSTOMER SUPPLIED
BASE PLATE WITH
RECOMMENDED
ALIGNMENT FEATURES
PER IGES DRAWING
Figure 5. Exploded view drawing.
PCB Assembly Considerations
3. Insert the LED clip assembly into PCB.
4. This sensor package is only qualified for wave-solder
process.
5. Wave solder the entire assembly in a no-wash solder
process utilizing solder fixture. The solder fixture
is needed to protect the sensor during the solder
process. It also sets the correct sensor-to-PCB distance
as the lead shoulders do not normally rest on the PCB
surface. The fixture should be designed to expose
the sensor leads to solder while shielding the optical
aperture from direct solder contact.
10. Install mouse top case. There MUST be a
feature in the top case to press down onto the
PCB assembly to ensure all components are
interlocked to the correct vertical height.
ADNS-5050
VDD5
GND
6. Place the lens onto the base plate.
7. Remove the protective kapton tape from optical
aperture of the sensor. Care must be taken to
keep contaminants from entering the aperture.
Recommend not to place the PCB facing up during the
entire mouse assembly process. Recommend to hold
the PCB first vertically for the kapton removal process.
8. Insert PCB assembly over the lens onto the base plate
aligning post to retain PCB assembly. The sensor
aperture ring should self-align to the lens.
REGO
IMAGE ARRAY
DSP
SERIAL PORT AND REGISTERS
2. Insert the LED into the assembly clip and bend the
leads 90 degrees.
9. The optical position reference for the PCB is
set by the base plate and lens. Note that the
PCB motion due to button presses must be
minimized to maintain optical alignment.
POWER AND CONTROL
1. Insert the sensor and all other electrical components
into PCB.
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SCLK
SDIO
NRESET
OSCILLATOR
LED DRIVE
Figure 6. Block diagram of ADNS-5050 optical mouse sensor.
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NCS
XY_LED
PixArt Imaging Inc.
ADNS-5050 Optical Mouse Sensor
Design Considerations for Improved ESD Performance
For improved electrostatic discharge performance,
typical creepage and clearance distance are shown in
the table below. Assumption: base plate construction
as per the PixArt Imaging supplied IGES file and
ADNS-5100-001 lens.
Typical Distance
A5100-001
Creepage
17.9
Clearance
9.2
NOTE: The lens material is polycarbonate or polystyrene HH30, therefore,
cyanoacrylate based adhesives orother adhesives that may damage the
lens should NOT be used.
LED CLIP
SENSOR
LENS
PCB
NAVIGATION SURFACE
LED
BASE PLATE
Figure 7. Sectional view of PCB assembly highlighting optical mouse components.
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ADNS-5050 Optical Mouse Sensor
SW2
+ 5V
MIDDLE
SW1
RIGHT
D1
HLMP-EG3E
SW3
LEFT
VCC
C7
0.1
8
1 SCLK
SDIO
VCC
P1.0
P1.1
P1.2
P1.3
P1.6
P1.7
VCC
VBUS
GND
D+
D-
J1
1
2
3
4
POWER
MCU
with
USB
Features
D+/SCLK
D-/SDAT
R13
1.30K
C2
4.7
5
VDD
P0.7
P0.6
P0.5
4
NCS
P0.4
GND 6
C4
3.3
ADNS-5050
XY_LED 2 XY_LED
NRESET
P0.3
P1.4
P1.5
P0.0
P0.1
VPP
XOUT
VREG
XIN/P2.1
RECOMMENDED
LED BIN:
VCC
Q1
2 VCC
GND
1
3 QA
QB
R2
240
D2
Z-LED
Z-ENCODER
R4
27K
R3
27K
Figure 8. Schematic diagram for interface between ADNS-5050 and microcontroller.
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C3
0.1
REG0 7
U1
3
P0.2
C1
0.1
BIN P AND ABOVE
(P,Q,R,S….)
Ropt
0.5k
PixArt Imaging Inc.
ADNS-5050 Optical Mouse Sensor
Regulatory Requirements
 Passes FCC B and worldwide analogous emission limits when assembled into a mouse with shielded cable and
following PixArt Imaging recommendations.
 Passes IEC-1000-4-3 radiated susceptibility level when assembled into a mouse with shielded cable and following
PixArt Imaging recommendations.
 Passes EN61000-4-4/IEC801-4 EFT tests when assembled into a mouse with shielded cable and following PixArt
Imaging recommendations.
 UL flammability level UL94 HB.
 Provides sufficient ESD creepage/clearance distance to avoid discharge up to 15 kV when assembled into a mouse
using lens according to usage instructions above.
Absolute Maximum Ratings
Parameter
Symbol
Storage Temperature
TS
Minimum
-40
Lead Solder Temp
Supply Voltage
-0.5
VDD
ESD
Input Voltage
VIN
Output Current
Iout
-0.5
Maximum
Units
85
°C
Notes
260
°C
5.5
V
2
kV
All pins, human body model
MIL 883 Method 3015
VDD+0.5
V
All I/O pins
7
mA
SDIO pin
Recommended Operating Conditions
Parameter
Symbol
Minimum
Operating Temperature
TA
0
Power Supply
VDD
4.0
Power Supply Rise Time
VRT
0.005
Supply Noise (Sinusoidal)
Maximum
Units
40
°C
5.25
V
100
ms
0 to VDD
VNA
100
mV p-p
10 kHz-50 MHz
Serial Port Clock Frequency
fSCLK
3
MHz
50% duty cycle.
Distance from Lens Reference
Plane to Tracking Surface (Z)
Z
2.5
mm
Speed
S
Acceleration
a
8
g
Load Capacitance
Cout
100
pF
2.3
Typical
5.0
2.4
30
SENSOR
Notes
ips
SDIO
LENS
OBJECT SURFACE
2.40
Z = (0.094)
LENS REFERENCE PLANE
Figure 9. Distance from lens reference plane to tracking surface (Z).
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ADNS-5050 Optical Mouse Sensor
AC Electrical Specifications
Electrical Characteristics over recommended operating conditions. Typical values at 25 °C, VDD = 5.0 V.
Parameter
Symbol
Minimum
Power Down
tPD
Wake from Power Down
tWAKEUP
50
Reset Pulse Width
tRESET
250
Motion Delay after Reset
tMOT-RST
SDIO Rise Time
tr-SDIO
SDIO Fall Time
tf-SDIO
SDIO delay after SCLK
tDLY-SDIO
SDIO Hold Time
thold-SDIO
SDIO Setup Time
Typical
Maximum
Units
Notes
50
ms
From PD (when bit 1 of register 0x0d
is set) to low current
55
ms
From PD inactive (when NRESET pin is
asserted high or write 0x5a to register
0x3a) to valid motion
ns
Active low.
50
ms
From NRESET pull high to valid mo
tion, assuming VDD and motion is
present.
150
300
ns
CL = 100pF
150
300
ns
CL = 100pF
120
ns
From SCLK falling edge to SDIO data
valid, no load conditions.
100
ns
Data held until next falling SCLK edge.
tsetup-SDIO
120
ns
From data valid to SCLK rising edge.
SPI Time between
Write Commands
tSWW
30
μs
From rising SCLK for last bit of the first
data byte, to rising SCLK for last bit of
the second data byte.
SPI Time between Write
and Read Commands
tSWR
20
μs
From rising SCLK for last bit of the first
data byte, to rising SCLK for last bit of
the second address byte.
SPI Time between
Read and Subsequent
Commands
tSRW
tSRR
500
ns
From rising SCLK for last bit of the first
data byte, to falling SCLK for the first
bit of the next address.
SPI Read Address-Data
Delay
tSRAD
4
μs
From rising SCLK for last bit of the
address byte, to falling SCLK for first bit
of data being read.
NCS Inactive after
Motion Burst
tBEXIT
250
ns
Minimum NCS inactive time after
motion burst before next SPI usage.
NCS to SCLK Active
tNCS-SCLK
120
ns
From NCS falling edge to first SCLK
rising edge.
SCLK to NCS Inactive
(for read operation)
tSCLK-NCS
120
ns
From last SCLK rising edge to NCS
rising edge, for valid SDIO data
transfer.
SCLK to NCS Inactive
(for write operation)
tSCLK-NCS
20
us
From last SCLK rising edge to NCS
rising edge, for valid SDIO data transfer.
NCS to SDIO High-Z
tNCS-SDIO
500
ns
From NCS rising edge to SDIO high-Z
state.
Transient Supply Current
IDDT
60
mA
Max supply current during a VDD ramp
from 0 to VDD.
10
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ADNS-5050 Optical Mouse Sensor
DC Electrical Specifications
Electrical Characteristics over recommended operating conditions. Typical values at 25 °C, VDD = 5.0 V.
Parameter
Symbol
DC Supply Current
Minimum
Typical
Maximum
Units
Notes
IDD_AVG
13.0
16.0
mA
Average sensor current, at max frame
rate. No load on SDIO.
Idle Supply Current
IDD_IDLE
11.0
Power Down Supply Current
IDD_PD
180
mA
250
μA
SCLK, NCS, NRESET, SDIO=VDD
0.5
V
SCLK, SDIO, NCS, NRESET
V
SCLK, SDIO, NCS, NRESET
mV
SCLK, SDIO, NCS, NRESET
μA
Vin = VDD-0.6 V, SCLK, SDIO, NCS,
NRESET
mA
Average current at maximum
frame rate.
51.5
mA
Peak current at maximum frame rate.
Follow recommended schematics in
Figure 8 to ensure DC current flowing
through LED during run mode is within
LED's absolute maximum limit.
0.7
V
Iout = 1 mA, SDIO
V
Iout = -1 mA, SDIO
Input Low Voltage
VIL
Input High Voltage
VIH
Input Hysteresis
VI_HYS
200
Input Leakage Current
Ileak
±1
XY_LED Current
(pin voltage range should
be greater than 0.8 V.)
IXY_LED
45
XY_LED Current
(pin voltage range should
be greater than 0.8 V.)
IXY_PK
45
Output Low Voltage
VOL
Output High Voltage
VOH
Input Capacitance
Cin
50
pF
Frame Rate
FR
4500
fps
VDD – 0.5
VDD-0.7
±10
Internally adjusted by sensor
(value shown is based on internal
oscillator frequency of 28MHZ)
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ADNS-5050 Optical Mouse Sensor
Typical Performance Characteristics
Resolution vs Z
1200
Manila
1000
Black
Formica
Resolution (DPI)
800
White
Paper
600
400
Spruce/
White
Pine
200
0
1.6
1.7
1.8
1.9
2
2.1
2.2
2.3
2.4
2.5
2.6
2.7
2.8
2.9
3
3.1
3.2
Distance from Lens Reference Plane to Tracking Surface, Z (mm)
Figure 10. Mean resolution vs. distance from lens reference plane to surface.
Average Path Error vs Z
25
Manila
Resolution (DPI)
20
Black
Formica
15
White
Paper
10
Spruce/
White
Pine
5
0
1.6
1.7
1.8
1.9
2
2.1
2.2
2.3
2.4
2.5
2.6
2.7
2.8
2.9
3
3.1
3.2
3.3
3.4
Distance from Lens Reference Plane to Tracking Surface, Z (mm)
Figure 11. Average error vs. distance (mm).
1
0.9
Normalized Response
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
400
500
600
700
Wavelength (nm)
800
900
1000
Figure 12. Relative wavelength responsivity.
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ADNS-5050 Optical Mouse Sensor
LED Mode
Chip Select Operation
For optimized tracking performance, the LED is in DC
mode when motion is detected, and ADNS-5050 will
pulse the LED when the mouse is in idle state. To force the
LED into always DC mode, kindly refer to register 0x22.
The serial port is activated after NCS goes low. If NCS
is raised during a transaction, the entire transaction is
aborted and the serial port will be reset. This is true for
all transactions. After a transaction is aborted, the normal address-to-data or transaction-to-transaction delay
is still required before beginning the next transaction. To
improve communication reliability, all serial transactions
should be framed by NCS. In other words, the port should
not remain enabled during periods of non-use because
ESD and EFT/B events could be interpreted as serial communication and put the chip into an unknown state. In addition, NCS must be raised after each burst-mode transaction is complete to terminate burst-mode. The port is not
available for further use until burst-mode is terminated.
Synchronous Serial Port
The synchronous serial port is used to set and read parameters in the ADNS-5050, and to read out the motion
information.
The port is a three wire serial port. The host micro-controller always initiates communication; the ADNS-5050
never initiates data transfers. SCLK, SDIO, and NCS may
be driven directly by a micro-controller. The port pins may
be shared with other SPI slave devices. When the NCS pin
is high, the inputs are ignored and the output is tri-stated.
Write Operation
Write operation, defined as data going from the microcontroller to the ADNS-5050, is always initiated by the
micro-controller and consists of two bytes. The first byte
contains the address (seven bits) and has a “1” as its MSB
to indicate data direction. The second byte contains the
data. The ADNS-5050 reads SDIO on rising edges of SCLK.
The lines that comprise the SPI port:
SCLK:
Clock input. It is always generated by the master
(the micro-controller).
SDIO:
Input and Output data.
NCS:
Chip select input (active low). NCS needs to be
low to activate the serial port; otherwise, SDIO
will be high Z, and SDIO & SCLK will be ignored.
NCS can also be used to reset the serial port in
case of an error.
NCS
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
1
2
1
A6
A5
A4
A3
A2
A1
A0
D7
D6
D5
D4
D3
D2
D1
D0
1
A6
SCLK
SDIO
SDIO DRIVEN BY MICRO-CONTROLLER
Write Operation
1/(2f SCLK ) 1/(2f SCLK )
SCLK
SDIO
thold
tsetup
SDIO Setup and Hold Time
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ADNS-5050 Optical Mouse Sensor
Read Operation
A read operation, defined as data going from the ADNS-5050 to the micro-controller, is always initiated by the microcontroller and consists of two bytes. The first byte contains the address, is sent by the micro-controller over SDIO, and
has a “0” as its MSB to indicate data direction. The second byte contains the data and is driven by the ADNS-5050 over
SDIO. The sensor outputs SDIO bits on falling edges of SCLK and samples SDIO bits on every rising edge of SCLK.
SCLK
CYCLE #
1
2
3
4
5
6
7
A6
A5
A4
A3
A2
A1
8
9
10
11
12
13
14
15
16
D7
D6
D5
D4
D3
D2
D1
D0
SCLK
SDIO
0
A0
SDIO DRIVEN BY MICRO-CONTROLLER
SDIO DRIVEN BY ADNS-5050
DETAIL "A"
DETAIL "B"
Read Operation
tDLY
DETAIL "A"
MICROCONTROLLER
TO ADNS-5050
SDIO HANDOFF
SCLK
tSETUP
SDIO
0 ns, MIN.
A1
A0
tSRAD
Hi-Z
tDLY
D7
D6
0 ns, MIN.
Microcontroller to ADNS-5050 Handoff
tDLY
DETAIL "B"
ADNS-5050 TO
MICROCONTROLLER
SDIO HANDOFF
tHOLD
SCLK
D0
SDIO
RELEASED BY 5050
R/W BIT OF NEXT ADDRESS
DRIVEN BY MICRO
ADNS-5050 to Microcontroller Handoff
NOTE:
The 0.5/fSCLK minimum high state of SCLK is also the minimum SDIO data hold time of the ADNS-5050. Since the falling edge of SCLK is actually the
start of the next read or write command, the ADNS-5050 will hold the state of data on SDIO until the falling edge of SCLK.
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ADNS-5050 Optical Mouse Sensor
Required Timing between Read and Write Commands
There are minimum timing requirements between read
and write commands on the serial port.
tSWR
•••
SCLK
ADDRESS
DATA
ADDRESS
WRITE OPERATION
NEXT READ OPERATION
•••
Timing between Two Write Commands
If the rising edge of the SCLK for the last data bit of the
second write command occurs before the required delay
(tsww), then the first write command may not complete
correctly.
tSRW & tSRR
tSRAD
•••
SCLK
DATA
ADDRESS
READ OPERATION
ADDRESS
•••
NEXT READ
or WRITE OPERATION
Timing between Write and Read Commands
If the rising edge of SCLK for the last address bit of the
read command occurs before the required delay (tSWR),
the write command may not complete correctly.
t SWW
SCLK
ADDRESS
DATA
WRITE OPERATION
ADDRESS
DATA
WRITE OPERATION
Timing between Read and Either Write or Subsequent Read Commands
During a read operation SCLK should be delayed at least
tSRAD after the last address data bit to ensure that the
ADNS-5050 has time to prepare the requested data. The
falling edge of SCLK for the first address bit of either the
read or write command must be at least tSRR or tSRW after
the last SCLK rising edge of the last data bit of the previous
read operation.
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ADNS-5050 Optical Mouse Sensor
Motion Burst Timing
tSRAD
•••
SCLK
MOTION_BURST REGISTER ADDRESS
READ FIRST BYTE
FIRST READ OPERATION
•••
READ SECOND BYTE
Burst Mode Operation
Burst mode is a special serial port operation mode that
may be used to reduce the serial transaction time for a
motion read. The speed improvement is achieved by continuous data clocking to or from multiple registers without the need to specify the register address, and by not
requiring the normal delay period between data bytes.
Burst mode is activated by reading the Motion_Burst register. The ADNS-5050 will respond with the contents of the
Delta_X, Delta_Y, SQUAL, Shutter_Upper, Shutter_Lower,
Maximum_Pixel and Pixel_Sum registers in that order. The
burst transaction can be terminated anywhere in the sequence after the Delta_X value by bringing the NCS pin
high. After sending the register address, the micro-controller must wait tSRAD and then begin reading data. All
data bits can be read with no delay between bytes by driving SCLK at the normal rate. The data are latched into the
output buffer after the last address bit is received. After
the burst transmission is complete, the micro-controller
must raise the NCS line for at least tBEXIT to terminate
burst mode. The serial port is not available for use until
it is reset with NCS, even for a second burst transmission.
PixArt Imaging highly recommends the usage of burst
mode operation in optical mouse sensor design applications.
READ THIRD BYTE
During power-up there will be a period of time after the
power supply is high but before any clocks are available.
The table below shows the state of the various pins during
power-up and reset.
State of Signal Pins After VDD is Valid
Pin
During Reset
After Reset
NCS
SDIO
SCLK
XY_LED
Ignored
Ignored
Ignored
Hi-Z
Functional
Depends on NCS
Depends on NCS
Functional
Notes on Power Down
The ADNS-5050 can be set in Power Down mode by setting bit 1 of register 0x0d. In addition, the SPI port should
not be accessed during power down. (Other ICs on the
same SPI bus can be accessed, as long as the sensor’s NCS
pin is not asserted.) The table below shows the state of
various pins during power down. There are 2 ways to exit
power down, either assert low NRESET pin or by writing
0x5a to Register 0x3a. A full reset will thus be executed.
Wait for tWAKEUP before accessing the SPI port. Any register settings must then be reloaded.
Notes on Power-up and Reset
The ADNS-5050 does not perform an internal power up
self-reset. There are two ways to reset the chip, either assert low NRESET pin or by writing 0x5a to register 0x3a. A
full reset will thus be executed. Any register settings must
then be reloaded.
*
Pin
Power Down Active
NRESET
Functional
NCS
Functional*
SDIO
Functional*
SCLK
Functional*
XY_LED
Power Down
NCS pin must be held to 1(high) if SPI bus is shared with other
devices. It can be in either state if the sensor is the only device in
addition to the controller microprocessor.
NOTE: There is long wakeup time from power down.
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PixArt Imaging Inc.
ADNS-5050 Optical Mouse Sensor
Registers
The ADNS-5050 registers are accessible via the serial port. The registers are used to read motion data and status as well
as to set the device configuration.
Address
Register
Read/Write
Default Value
0x00
Product_ID
R
0x12
0x01
Revision_ID
R
0x01
0x02
Motion
R
0x00
0x03
Delta_X
R
Any
0x04
Delta_Y
R
Any
0x05
SQUAL
R
Any
0x06
Shutter_Upper
R
Any
0x07
Shutter_Lower
R
Any
0x08
Maximum_Pixel
R
Any
0x09
Pixel_Sum
R
Any
0x0a
Minimum_Pixel
R
Any
0x0b
Pixel_Grab
R/W
Any
0x0c
Reserved
0x0d
Mouse_Control
R/W
0x00
R/W
0x08
R/W
0x00
W
N/A
0x0e – 0x18
Reserved
0x19
Mouse_Control2
0x1a – 0x21
Reserved
0x22
LED_DC_Mode
0x23 – 0x39
Reserved
0x3a
Chip_Reset
0x3b – 0x3d
Reserved
0x3e
Product ID2
R
0x26
0x3f
Inv_Rev_ID
R
0xfe
0x40 – 0x62
Reserved
0x63
Motion_Burst
R
0x00
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ADNS-5050 Optical Mouse Sensor
Product_ID
Access: Read
Address: 0x00
Reset Value: 0x12
Bit
7
6
5
4
3
2
1
0
Field
PID7
PID6
PID5
PID4
PID3
PID2
PID1
PID0
Data Type:
8-Bit unsigned integer
USAGE:
This register value is made to be the same as ADNS-5020-EN for direct replacement. The alternative
PID is located at Product_ID2 (Address 0x3e). The values in these registers do not change; either one
can be used to verify if the serial communications link is functional.
Revision_ID
Access: Read
Data Type:
Address: 0x01
Reset Value: 0x01
Bit
7
6
5
4
3
2
1
0
Field
RID7
RID6
RID5
RID4
RID3
RID2
RID1
RID0
8-Bit unsigned integer
USAGE: This register contains the IC revision. It is subject to change when new IC versions are released.
Motion
Access: Read/Write
Address: 0x02
Reset Value: 0x00
Bit
7
6
5
4
3
2
Field
MOT
Reserved Reserved Reserved Reserved Reserved Reserved Reserved
0
Data Type:
Bit field.
USAGE:
Register 0x02 allows the user to determine if motion has occurred since the last time it was read. If
the MOT bit is set, then the user should read registers 0x03 and 0x04 to get the accumulated motion.
Read this register before reading the Delta_X and Delta_Y registers.
Writing anything to this register clears the MOT bit, Delta_X and Delta_Y registers. The written data
byte is not saved.
Field Name
MOT
Reserved
Description
Motion since last report
0 = No motion
1 = Motion occurred, data ready for reading in Delta_X and Delta_Y registers
Reserved
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ADNS-5050 Optical Mouse Sensor
Delta_X
Access: Read
Address: 0x03
Reset Value: 0x00
Bit
7
6
5
4
3
2
1
0
Field
X7
X6
X5
X4
X3
X2
X1
X0
Data Type:
Eight bit 2’s complement number.
USAGE:
X movement is counts since last report. Absolute value is determined by resolution. Reading clears
the register.
MOTION
-128
-127
-2
-1
0
+1
+2
+126
+127
DELTA_X
80
81
FE
FF
00
01
02
7E
7F
NOTE: Register 0x03 MUST be read prior to Register 0x04.
Delta_Y
Access: Read
Address: 0x04
Reset Value: 0x00
Bit
7
6
5
4
3
2
1
0
Field
Y7
Y6
Y5
Y4
Y3
Y2
Y1
Y0
Data Type:
Eight bit 2’s complement number.
USAGE:
Y movement is counts since last report. Absolute value is determined by resolution. Reading clears
the register.
MOTION
-128
-127
-2
-1
0
+1
+2
+126
+127
DELTA_Y
80
81
FE
FF
00
01
02
7E
7F
NOTE: Register 0x03 MUST be read prior to Register 0x04.
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PixArt Imaging Inc.
ADNS-5050 Optical Mouse Sensor
SQUAL
Access: Read
Address: 0x05
Reset Value: 0x00
Bit
7
6
5
4
3
2
1
0
Field
SQ7
SQ6
SQ5
SQ4
SQ3
SQ2
SQ1
SQ0
Data Type:
Upper 8 bits of a 9-bit unsigned integer.
USAGE:
SQUAL (Surface Quality) is a measure of the number of valid features visible by the sensor in the current frame. The maximum SQUAL register value is 128. Since small changes in the current frame can
result in changes in SQUAL, variations in SQUAL when looking at a surface are expected. The graph
below shows few sequentially acquired SQUAL values, while a sensor was moved slowly over white
paper. SQUAL is nearly equal to zero, if there is no surface below the sensor. SQUAL is typically maximized when the navigation surface is at the optimum distance from the imaging lens (the nominal
Z-height).
60
SQUAL value
50
40
30
20
10
0
1
55
109 163 217 271 325 379 433 487 541 595 649 703 757 811 865
Count
Figure 13. Squal values (white paper).
60
SQUAL count
50
40
Avg-3sigma
30
Avg
20
Avg+3sigma
10
0
1.6
1.8
2
2.2
2.4
2.6
2.8
3
3.2
3.4
Delta from Lens Reference Plane to Tracking Surface, Z (mm)
Figure 14. Mean squal vs. Z (white paper).
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PixArt Imaging Inc.
ADNS-5050 Optical Mouse Sensor
Shutter_Upper
Access: Read
Address: 0x06
Reset Value: 0x00
Bit
7
6
5
4
3
2
1
0
Field
S15
S14
S13
S12
S11
S10
S9
S8
Shutter_Lower
Access: Read
Address: 0x07
Reset Value: 0x00
Bit
7
6
5
4
3
2
1
0
Field
S7
S6
S5
S4
S3
S2
S1
S0
Data Type:
Sixteen bit unsigned integer.
USAGE:
Units are clock cycles. They must be read in this order: Read 0x06 first, then 0x07. The shutter is continuously adjusted to keep the average and maximum pixel values within normal operating range.
The shutter value is automatically adjusted.
70
60
Shutter value
50
40
30
20
10
0
1
47
93 139 185 231 277 323 369 415 461 507 553 599 645 691 737 783 829 875
Count
Figure 15. Shutter (white paper).
200
Shutter value (Count)
150
Avg-3sigma
Avg
100
Avg+3sigma
50
0
1.6
1.8
2
2.2
2.4
2.6
2.8
3
3.2
3.4
Distance from Lens Reference Plane to Tracking Surface, Z (mm)
Figure 16. Mean shutter vs. Z (white paper).
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ADNS-5050 Optical Mouse Sensor
Maximum_Pixel
Access: Read
Address: 0x08
Reset Value: 0x00
Bit
7
6
5
4
3
2
1
0
Field
MP0
MP6
MP5
MP4
MP3
MP2
MP1
MP0
Data Type:
Seven-bit number.
USAGE:
Maximum Pixel value in current frame. Minimum value = 0, maximum value = 127. The maximum
pixel value can vary with every frame.
Pixel_Sum
Access: Read
Address: 0x09
Reset Value: 0x00
Bit
7
6
5
4
3
2
1
0
Field
AP7
AP6
AP5
AP4
AP3
AP2
AP1
AP0
Data Type:
High 8 bits of an unsigned 15-bit integer.
USAGE:
This register is the accumulated pixel value from the last image taken. The maximum accumulator
value is 45,847, but only bits [14:7] are reported. It may be described as the full sum divided by 1.41.
The maximum register value is 179. The minimum is 0. The pixel sum value can change on every
frame
Minimum_Pixel
Access: Read
Address: 0x0a
Reset Value: 0x00
Bit
7
6
5
4
3
2
1
0
Field
MP0
MP6
MP5
MP4
MP3
MP2
MP1
MP0
Data Type:
Seven-bit number..
USAGE:
Minimum Pixel value in current frame. Minimum value = 0, maximum value = 127. The minimum
pixel value can vary with every frame.
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ADNS-5050 Optical Mouse Sensor
Pixel_Grab
Access: Read/Write
Address: 0x0b
Reset Value: 0x00
Bit
7
6
5
4
3
2
1
0
Field
Valid
PD6
PD5
PD4
PD3
PD2
PD1
PD0
Data Type:
Eight-bit word.
USAGE:
The pixel grabber captures 1 pixel per frame. If there is a valid pixel in the grabber when this register
is read, the MSB will be set, an internal counter will incremented to capture the next pixel and the
grabber will be armed to capture the next pixel. It will take 361 reads to upload the complete image.
Any write to this register will reset and arm the grabber to grab pixel 0 on the next image.
Physical Pixel Address Map – readout order of the array
(looking through the sensor aperture at the bottom of the package)
LAST PIXEL
BOTTOM VIEW OF MOUSE
TOP X-RAY VIEW OF MOUSE
18 37 56 75 94 113 132 151 170 189 208 227 246 265 284 303 322 341 360
17 36 55 74 93 112 131 150 169 188 207 226 245 264 283 302 321 340 359
16 35 54 73 92 111 130 149 168 187 206 225 244 263 282 301 320 339 358
LB
15 34 53 72 91 110 129 148 167 186 205 224 243 262 281 300 319 338 357
RB
14 33 52 71 90 109 128 147 166 185 204 223 242 261 280 299 318 337 356
13 32 51 70 89 108 127 146 165 184 203 222 241 260 279 298 317 336 355
POSITIVE Y
11 30 49 68 87 106 125 144 163 182 201 220 239 258 277 296 315 334 353
10 29 48 67 86 105 124 143 162 181 200 219 238 257 276 295 314 333 352
9
28 47 66 85 104 123 142 161 180 199 218 237 256 275 294 313 332 351
POSITIVE Y
12 31 50 69 88 107 126 145 164 183 202 221 240 259 278 297 316 335 354
4
5
3
8
27 46 65 84 103 122 141 160 179 198 217 236 255 274 293 312 331 350
7
26 45 64 83 102 121 140 159 178 197 216 235 254 273 292 311 330 349
6
25 44 63 82 101 120 139 158 177 196 215 234 253 272 291 310 329 348
7
5
24 43 62 81 100 119 138 157 176 195 214 233 252 271 290 309 328 347
8
4
23 42 61 80 99 118 137 156 175 194 213 232 251 270 289 308 327 346
3
22 41 60 79 98 117 136 155 174 193 212 231 250 269 288 307 326 345
2
21 40 59 78 97 116 135 154 173 192 211 230 249 268 287 306 325 344
1
20 39 58 77 96 115 134 153 172 191 210 229 248 267 286 305 324 343
0
19 38 57 76 95 114 133 152 171 190 209 228 247 266 285 304 323 342
FIRST PIXEL
6
2
1
POSITIVE X
HOLE AT MOUSE BOTTOM COVER FOR LENS
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POSITIVE X
PixArt Imaging Inc.
ADNS-5050 Optical Mouse Sensor
Reserved
Address: 0x0c
Mouse_control
Access: Read/Write
Address: 0x0d
Reset Value: 0x00
Bit
7
6
5
4
3
2
Field
Reserved Reserved Reserved Reserved Reserved Reserved PD
Data Type:
Eight bit number
USAGE:
Resolution and Power Down information can be accessed or to be edited by this register.
Field Name
Description
PD
Power Down
0 = Normal
1 = Power Down
RES
Set resolution
0 = 500 cpi
1 = 1000 cpi
Reserved
Reserved
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0
RES
PixArt Imaging Inc.
ADNS-5050 Optical Mouse Sensor
Reserved
Address: 0x0e-0x18
Mouse_Control2
Access: Write
Address: 0x19
Reset Value: 0x08
Bit
7
6
5
4
Field
Reserved Reserved Reserved RES_EN
3
2
1
0
RES
RES
RES
RES
Data Type:
Eight bit number
USAGE:
Resolution information can be accessed or to be edited by this register.
Field Name
Description
RES_EN
= 0 Disable RES[3:0] setting.
= 1 Enable RES[3:0] setting.
RES [3:0]
= 0b0001: 125 CPI
= 0b0010: 250 CPI
= 0b0011: 375 CPI
= 0b0100: 500 CPI
= 0b0101: 625 CPI
= 0b0110: 750 CPI
= 0b0111: 875 CPI
= 0b1000: 1000 CPI
= 0b1001: 1125 CPI
= 0b1010: 1250 CPI
= 0b1011: 1375 CPI
NOTE: Bit 4 MUST be set to ‘1’ before the resolution set in this register takes effect.
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ADNS-5050 Optical Mouse Sensor
Reserved
Address: 0x1a-0x21
LED_DC_Mode
Access: Read/Write
Address: 0x22
Reset Value: 0x00
Bit
7
6
5
4
3
2
1
0
Field
LM7
LM 6
LM 5
LM 4
LM 3
LM 2
LM 1
LM 0
Data Type:
8-Bit unsigned integer
USAGE:
Write 0x80 to this register to force LED into Always DC mode.
Reserved
Address: 0x23-0x39
Chip_Reset
Access: Write
Address: 0x3a
Reset Value: 0x00
Bit
7
6
5
4
3
2
1
0
Field
CR7
CR 6
CR 5
CR 4
CR 3
CR 2
CR 1
CR 0
Data Type:
8-Bit unsigned integer
USAGE:
Write 0x5a to initiate chip RESET.
Reserved
Address: 0x23-0x39
Product_ID2
Access: Read
Address: 0x3e
Reset Value: 0x26
Bit
7
6
5
4
3
2
1
0
Field
PID7
PID 6
PID 5
PID 4
PID 3
PID 2
PID 1
PID 0
Data Type:
8-Bit unsigned integer
USAGE:
This register contains a unique identification assigned to the ADNS-5050. The value in this register
does not change; it can be used to verify that the serial communications link is functional.
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ADNS-5050 Optical Mouse Sensor
Inv_Rev_ID
Access: Read
Address: 0x3f
Reset Value: 0xfe
Bit
7
6
5
4
3
2
1
0
Field
RRID7
RRID6
RRID5
RRID4
RRID3
RRID2
RRID1
RRID0
Data Type:
8-Bit unsigned integer
USAGE:
This register contains the inverse of the revision ID which is located at register 0x01..
Reserved
Address: 0x40-0x62
Motion_Burst
Access: Read
Address: 0x63
Reset Value: 0x00
Bit
7
6
5
4
3
2
1
0
Field
MB7
MB6
MB5
MB4
MB3
MB2
MB1
MB0
Data Type:
Various.
USAGE:
Read from this register to activate burst mode. The sensor will return the data in the Delta_X, Delta_Y,
SQUAL, Shutter_Upper, Shutter_Lower, Maximum_Pixel and Pixel_Sum. If the burst is not terminated
at this point, the internal address counter stops incrementing and Pixel Sum register’s value will be
continuously returned. Bursts are terminated when NCS is raised.
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