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PDF ADNS-3530 Data sheet ( Hoja de datos )
| Número de pieza | ADNS-3530 | |
| Descripción | Low Power LED Integrated Slim Mouse Sensor | |
| Fabricantes | PixArt | |
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Data Sheet
ADNS-3530
Low Power LED Integrated Slim Mouse Sensor
Description
Features
The ADNS-3530 LED optical mouse sensor is a small form
factor (SFF) LED illuminated navigation system.
The ADNS-3530 is a low-power optical navigation sen-
sor. It has a new, low-power architecture and automatic
power management modes, making it ideal for battery-
and power-sensitive applications such as cordless input
devices.
The ADNS-3530 is capable of high-speed motion
detection — up to 20 ips and 8 g. In addition, it has
an on-chip oscillator and integrated LED to minimize
external components.
The ADNS-3530, along with the ADNS-3150-001 lens,
forms a complete and compact mouse tracking system.
There are no moving parts which means high reliabil-
ity and less maintenance for the end user. In addition,
precision optical alignment is not required, facilitating
high volume assembly.
The sensor is programmed via registers through a four-
wire serial port. It is packaged in a 16 I/O surface mount-
able package.
Theory of Operation
The ADNS-3530 is based on Optical Navigation Technol-
ogy, which measures changes in position by optically
acquiring sequential surface images (frames) and math-
ematically determining the direction and magnitude of
movement.
• Low power architecture
• Small form factor
• Surface mount technology (SMT) device
• Self-adjusting power-saving modes for longest
battery life
• High speed motion detection up to 20 ips and 8 g
• Self-adjusting frame rate for optimum performance
• Motion detect pin output
• Internal oscillator – no clock input needed
• Selectable 500 and 1000 cpi resolution
• Wide operating voltage: 2.7V - 3.6V nominal
• Four wire serial port
• Minimal number of passive components
• Integrated chip-on-board LED
Applications
• Optical mice
• Optical trackballs
• Integrated input devices
• Battery-powered input device
The ADNS-3530 contains an Image Acquisition System
(IAS), a Digital Signal Processor (DSP), and a four 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 infor-
mation from the sensor serial port. The microcontroller
then translates the data into PS2, USB, or RF signals
0before sending them to the host PC or game console.
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: [email protected]
1
1 page  
PixArt Imaging Inc.
Low Power LED Integrated Slim Mouse Sensor
ADNS-3530
ADNS-3150-001
CUSTOMER-
SUPPLIED
BASE PLATE
Figure 5a. Exploded top view
ADNS-3530
ADNS-3150-001
CUSTOMER-
SUPPLIED
BASE PLATE
Figure 5b. Exploded bottom view
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.
5 Page 
PixArt Imaging Inc.
Low Power LED Integrated Slim Mouse Sensor
Power Management Modes
The ADNS-3530 has three power-saving modes. Each
mode has a different motion detection period, affecting
response time to mouse motion (Response Time). The
sensor automatically changes to the appropriate mode,
depending on the time since the last reported motion
(Downshift Time). The parameters of each mode are
shown in the following table.
Mode
Rest 1
Rest 2
Rest 3
Response Time
(Nominal)
16.5 ms
82 ms
410 ms
Downshift Time
(Nominal)
237 ms
8.4 s
504 s
Motion Pin Timing
The motion pin is a level-sensitive output that signals
the microcontroller when motion has occurred. The mo-
tion pin is lowered whenever the motion bit is set; in
other words, whenever there is data in the Delta_X or
Delta_Y registers. Clearing the motion bit (by reading
Delta_Y and Delta_X, or writing to the Motion register)
will put the motion pin high.
LED Mode
For power savings, the LED will not be continuously on.
ADNS-3530 will flash the LED only when needed.
Synchronous Serial Port
The synchronous serial port is used to set and read pa-
rameters in the ADNS-3530, and to read out the motion
information.
The port is a four wire serial port. The host microcon-
troller always initiates communication; the ADNS-3530
never initiates data transfers. SCLK, MOSI, and NCS may
be driven directly by a microcontroller. 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.
The lines that comprise the SPI port:
SCLK: Clock input. It is always generated by the mas-
ter (the microcontroller).
MOSI: Input data. (Master Out/Slave In)
MISO: Output data. (Master In/Slave Out)
NCS: Chip select input (active low). NCS needs to
be low to activate the serial port; otherwise,
MISO will be high Z, and MOSI & SCLK will be
ignored. NCS can also be used to reset the se-
rial port in case of an error.
Chip Select Operation
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 nor-
mal address-to-data or transaction-to-transaction delay
is still required before beginning the next transaction.
To improve communication reliability, all serial transac-
tions 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.
Write Operation
Write operation, defined as data going from the micro-
controller to the ADNS-3530, is always initiated by the
microcontroller 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-3530 reads MOSI on rising edges of
SCLK.
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: [email protected]
11
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