Features. Applications

Transcription

1 Description The PixArt ADNS-050 is a small form factor entry-level gaming optical navigation sensor. It is housed in an 8-pin staggered dual in-line package (DIP). It is capable of high-speed motion detection typically at 60ips and acceleration up to 0g; suitable for both wired and wireless gaming navigation system. The low power management in wireless mode can be customized to suit user preferences. In addition, it has an on-chip oscillator and LED driver to minimize external components. The ADNS-050 sensor along with the ADNS lens, or ADNS trim lens LED clip, and HLMP-EGE red LED forms a complete and compact mouse tracking system. There are no moving parts, which translates to high reliability and less maintenance for the end user. Precision optical alignment is not required, thus facilitating high volume assembly. Theory of Operation The ADNS-050 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-050 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 and translates the ΔX and Δy information from the sensor serial port into PS, USB, or F signals before sending them to the host PC. Features Small Form Factor Package - 8-pin DIP Operating oltage:.8-.0 High Speed Motion Detection at typical of 60ips and acceleration up to 0g. Selectable esolutions up to 000cpi Four wire Serial Port Interface External Interrupt Output for Motion Detection Internal Oscillator no clock input needed On-chip LED driver Minimal number of passive components Programmable power-saving modes for selectable wired or wireless application Customizable response time and downshift time for rest modes Configurable LED operating modes and drive current Applications Wired and Wireless Optical gaming mice and trackballs Integrated input devices Battery-powered input devices NOTE: The ADNS-050 sensor is not designed for use with blue LED navigation system.

2 Pinout of ADNS-050 Optical Mouse Sensor Pin Name Input/Output Description MISO O Serial Data Output (Master In/Slave Out) LED I LED Illumination Control Input MOTION O Motion Interrupt Output (Active low,) 4 NCS I Chip Select (Active low) 5 SCLK I Serial Clock Input 6 GND I Ground 7 DD I Supply oltage 8 MOSI I Serial Data Input (Master Out/Slave In) Item Marking emarks Product Number A050 Date Code XYYWWZ X = Subcon Code YYWW = Date Code Z = Sensor Die Source Lot Code Numeric Figure. Package Outline Drawing (Top iew)

3 Figure. Package Outline Drawing CAUTION: It is advised that normal static precautions be taken in handling and assembling of this component to prevent damage and/or degradation which may be induced by ESD.

4 Overview of Optical Mouse Sensor Assembly PixArt provides an IGES file drawing describing the base plate molding features for lens and PCB alignment The ADNS-050 sensor is designed for mounting on a through-hole PCB. There is an aperture stop and features on the package that align to the lens. The ADNS lens and ADNS trim 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-EGE red LED is recommended for illumination. Figure. ecommended PCB Mechanical Cutouts and Spacing 4

5 H BUS D- D+ GND SHIELD HWFL mm 5way CC SENSO 5 C4 C6 00nF uf/0 9 0 C9 C5 4.7uF/6. 00nF C7 C uF/0 00nF 7 k C C 0pF 0pF EXT_8 EXT_9 6 CON k CC PCB_SOCKET_X5P JTAG 8 k C0 00nF Left Button A050 Sensor Block SW U D4 HLMP-EGE GND C805F47 DD W G B S 0 C D C 0uF/0 k5 k U EGIN BUS D- D+ P.7 P.6 CCK/ST P.0/CD SCLK P0./SCLK MISO P0./MISO MOSI P0./MOSI 0 NCS P0.4/NCS 9 MOTION P0.5 8 P0.6 6 ZB P.0 5 ZA P. 4 SW_LEFT P. SW_IGHT P. SW_MID P.4 +CPI P.5 0 -CPI P.6 9 EXT_ P.7 8 LED P.0 7 LED P. 6 LED P. 5 EXT_ P. 4 EXT_4 P.4 EXT_5 P.5 EXT_6 P0.0 7 P0.7 ight Button MCU SCLK MISO MOSI NCS MOTION EXT_ CC 5 SENSO 5 CC SENSO SMA5.0ATG A C Default: Open D D PGB0060M PGB0060M SW P ZA EXT_ EXT_4 P P4 Short by Default P4 P5 EXT_5 P5 CONNECT TO PCB P P P P8 EXT_6 P6 CUENT MEASUEMENT OLTAGE MEASUEMENT EXT_8 P8 EXT_9 P9 EXTA POT 00nF PCB Notes: Avoid Stub layout : Overvoltage Protection Circuits : EMC Shielding Circuit for USB cable. PCB Notes: Place near USB connector PCB Notes: Provide plane for USB Shield adjacent to CC plane that is no larger than USB header P6 P7 Open by Default CON +CPI 4 LED -CPI 5 6 LED 7 8 LED Middle Button SW5 PCB_SOCKET_X4P Tilt Left SW6 Tilt ight SW7 CONNECT TO PCB Z-Encoder P9 P0 ZB P 6 GND DD 7 SCLK MISO MOSI NCS MOTION XY_LED ADNS

6 Figure 9. Schematic diagram for interface between ADNS-050 and microcontroller with HLMP-EGE ed LED on a wireless solution NOTE: The ADNS-050 Optical Mouse Sensor is not designed for use with blue LED navigation system. 6 BT BATTEY 00k C 0nF C 00nF C4 00nF C 00nF C9 4.7uF/6. J X.768KHz SW_LEFT SW_IGHT SW_MID D5 HLMP-ED80 MOT_MCU U F_IQ SW_CPI+ MISO_MCU MOSI_MCU SCLK_MCU NCS_MCU F_EN F_NCS ZA ZB MSP40-74 SW SW ZB ZA Q 5.6 C7 C8 0uF/6. 0nF C9 nf C0 5 nf k 6 M % C C pf pf L 8.nH L4 C.9nH.5pF C5 C6.nF 4.7pF E L5.7nH C4 pf nf4l0 U7 F_EN F_NCS SCLK_MCU MOSI_MCU MISO_MCU F_IQ X 6MHz Notes:. 50 ohm trace (highlighted trace) SW5 SW4 Notes: 0uF input cap optional TP TP TP P PAD SW SW SLIDE-SPDT Notes: Pads for current measurement. Short by default. NOTE: = x {(o/fb) -} = 5K x {(o/500m) -} L 4.7uH U TPS C7 4.7uF/6. 5 U5 ADNS 050 C 4.7uF/6. C5 4.7uF/6. M C6 4.7uF/6. C8 0uF/6. 5k PCB Notes: pin 9,4,4,5,6,8,,7,8, 9, need to short track if need to connect to GND plane. HLMP-EGE DD: MCU Supply DD: F Supply DD: Sensor Supply 7 8 9

7 Design Considerations for Improved ESD Performance egulatory equirements For improved electrostatic discharge performance, typical creepage and clearance distance are shown in the table below. Assumption: base plate construction is as per the PixArt supplied IGES file and ADNS or ADNS50-00 trim lens. Note that the lens material is polycarbonate or polystyrene HH0. Therefore, cyanoacrylate based adhesives or other adhesives that may damage the lens should NOT be used. Passes FCC B and worldwide analogous emission limits when assembled into a mouse with shielded cable and following PixArt s recommendations. ADNS Lens Typical Distance (mm) Creepage 5.4 Clearance 7.77 Passes IEC radiated susceptibility level when assembled into a mouse with shielded cable and following PixArt s recommendations. Passes EN /IEC80-4 EFT tests when assembled into a mouse with shielded cable and following PixArt recommendations. Provides sufficient ESD creepage/clearance distance to withstand discharge up to 5K when assembled into a mouse according to usage instructions above. Table. Absolute Maximum atings Parameter Symbol Minimum Maximum Units Storage Temperature TS C Operating Temperature TA C Lead Solder Temperature TSOLDE 60 C Supply oltage DD k All pins DD All I/O pins 7 ma MISO pin Typ. Max Units ESD (Human Body Model) Input oltage IN Output Current Iout -0.5 Notes For 7 seconds,.6mm below seating plane. Table. ecommended Operating Condition Parameter Symbol Min Operating Temperature TA 0 40 C Notes Power Supply oltage DD.8.0 Power Supply ise Time tt ms 0 to DD min Supply Noise (Sinusoidal) NA 00 mp-p 0kHz 50MHz Serial Port Clock Frequency fsclk MHz 50% duty cycle Distance from Lens eference Z.5 mm..4 Plane to Tracking Surface Speed S 60 ips Acceleration A 0 g In run mode Load Capacitance Cout 00 pf MISO 7

8 Table 4. DC Electrical Specifications Electrical characteristics over recommended operating conditions. Typical values at 5 C, DDLED =.8, ILED HLMPEGE, LED =. Parameter Symbol Units Notes DC Supply Current IDD_UN_DC IDD_UN_WIELESS IDD_EST IDD_EST IDD_EST Min Typ Max ma Including LED current. No load on MISO Default sensor setting for est, est and est modes Power Down Current IPD 0 μa Input Low oltage IL Input High oltage IH Input Hysteresis I_HYS 00 Input Leakage Current Ileak ± Output Low oltage OL Output High oltage OH Input Capacitance Cin 0.5 SCLK, MOSI, NCS SCLK, MOSI, NCS m SCLK, MOSI, NCS ±0 μa in=dd-0.6, SCLK, MOSI, NCS 0.7 Iout=mA, MISO, MOTION Iout=-mA, MISO, MOTION pf MOSI, NCS, SCLK dd-0.5 dd Synchronous Serial Port Chip Select Operation The synchronous serial port is used to set and read parameters in the ADNS-050, and to read out the motion information. The port is a four wire serial port. The host micro-controller always initiates communication; the ADNS-050 never initiates data transfers. SCLK, MOSI, 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 at tri-state. The serial port is activated after NCS goes low; otherwise, MISO will be high-z, while MOSI and SCLK will be ignored. 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. NCS can also be used to reset the serial port in case of an error occurs. The lines that comprise the SPI port: SCLK: Clock input. It is always generated by the master (the micro-controller). 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 serial port in case of an error. 8

9 egisters The ADNS-050 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 egister Name egister Description ead/write Default alue POD_ID Product ID 0x09 0x0 E_ID evision ID 0x0 MOTION_ST Motion Status 0x0 DELTA_X Delta_X 0x04 DELTA_Y Delta_Y 0x05 SQUAL Squal Quality 0x06 SHUT_HI Shutter Open Time (Upper 8-bit) 0x0 0x07 SHUT_LO Shutter Open Time (Lower 8-bit) 0x08 PIX_MAX Maximum Pixel alue 0x09 PIX_ACCUM Average Pixel alue 0x0a PIX_MIN Minimum Pixel alue 0x0b PIX_GAB Pixel Grabber 0x0d MOUSE_CTL Mouse Control 0x0 0x0e UN_DOWNSHIFT Downshift Time from un to est 0x46 0x0f EST_PEIOD Time Period of est 0x0 EST_DOWNSHIFT Downshift Time from est to est 0x4f 0x EST_PEIOD Time Period of est 0x09 0x EST_DOWNSHIFT Downshift Time from est to est 0xf 0x EST_PEIOD Time Period of est 0 x 0xc SHUT_TH Shutter Threshold 0x4 0xd SQUAL_THESHOLD Squal Threshold 0xd 0x NA_CTL LED Mode Configuration 0x5 MISC_SETTINGS DC and wakeup settings egister 0x6 0x4 LED_PECHAGE LED precharge time egister 0xa0 0xa ESET eset W 0xb SHUTDOWN Shutdown egister W 0xf NOT_E_ID Inverted evision ID 0xff 0x45 EST_MODE_CONFIG est Mode Configuration 9