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UR7HCPXZ-P440-FA Dataheets PDF



Part Number UR7HCPXZ-P440-FA
Manufacturers Semtech Corporation
Logo Semtech Corporation
Description Advanced Click-to-Select No-DriftTM PS/2 Force Stick Controller
Datasheet UR7HCPXZ-P440-FA DatasheetUR7HCPXZ-P440-FA Datasheet (PDF)

PixiPointTM Z UR7HCPXZ-P440 Advanced “Click-to-Select” TM No-Drift PS/2 Force Stick Controller HID & SYSTEM MANAGEMENT PRODUCTS, MOUSECODERTM FAMILY DESCRIPTION The PixiPointTM Z mouse encoder is a cost-effective, highfunctionality IC designed to interface the CTS 106, 108 and 109 sensors to the PS/2 port. Ideal for laptop/palmtop use, the low power PixiPointTM Z offers an advanced algorithm for enhanced motion control. The IC also enables click, double-click, MouseWheel action and slow drag wit.

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PixiPointTM Z UR7HCPXZ-P440 Advanced “Click-to-Select” TM No-Drift PS/2 Force Stick Controller HID & SYSTEM MANAGEMENT PRODUCTS, MOUSECODERTM FAMILY DESCRIPTION The PixiPointTM Z mouse encoder is a cost-effective, highfunctionality IC designed to interface the CTS 106, 108 and 109 sensors to the PS/2 port. Ideal for laptop/palmtop use, the low power PixiPointTM Z offers an advanced algorithm for enhanced motion control. The IC also enables click, double-click, MouseWheel action and slow drag without the need for special drivers. The IC provides an extra port for hot-plug connection of an external pointing device, including those with built-in Mousewheel. Both the embedded sensor and the external device can be operated concurrently. The PixiPointTM Z utilizes a special signal conditioning circuit (US and International patent pending) which enables a low cost, simple and real estate-saving implementation. Just a few low tolerance external components are needed. The IC implements typically consumes less than 3mA, making it suitable for use in battery-operated systems. PS/2 communication is bidirectional at 10 kbps. The IC, a CMOS device operating at 4 MHz, is compatible with both the IBM and Microsoft two-button and the Logitech three-button mouse protocols. It implements all commands from and to the system, as defined in the IBM PS/2 Mouse Communication Protocol. Custom versions are also available to suit a range of applications. 32 1 FEATURES • Accurate cursor control via Semtech’s Advanced Motion Control algorithm • Click (Select), Double-Click (Execute), MouseWheel and slow drag are implemented in the IC – no special driver support required • Enables hot-plug connections of an external pointing device, including those with MouseWheel • Offers concurrent operation of force stick and external pointing device • Provides ideal interface for CTS Series 106, 108 and 109 sensors • Low power consumption of typically less than 3mA makes it ideal for battery-operated systems • 3-5V operation in extended temperature range APPLICATIONS • Notebooks/laptops • Handhelds PIN ASSIGNMENTS • Keyboards • Instrumentation • Can utilize standard mouse drivers • Inexpensive, simple and real estate-saving implementation with USAR’s proprietary signal conditioning circuit • Offers “Clean Stop” so cursor stops when you want it to • Compatible with IBM/Microsoft two-button and Logitech threebutton mouse • Supports all commands from and to the system, as defined in the IBM PS/2 Mouse Communication Protocol • Small 32-pin 7mm X 7mm LQFP package • Customized versions available • Royalty-free and cost-effective _RB SPWR0 SPWR1 SPWR2 SPWR3 SPWR4 DA OFST 25 24 AD SELX SELZ DRVZ VREF _RESET VSS2 VDD 8 9 16 17 _MB _LB INH MDAT MCLK SSELECT XCLK1 XCLK PixiPoint and MouseCoder are trademarks of Semtech Corp. All other trademarks belong to their respective companies. Copyright Semtech 2000-2001 DOC7-PXZ-P440-DS-111 1 OCSIN _OSCOUT VSS DRV_XY0 DRV_XY1 Z_SIG0 Z_SIG1 XDAT www.semtech.com ORDERING CODE Package options 32-pin, Plastic LQFP Pitch in mm’s 0.5 TA = -20°C to +85°C UR7HCPXZ-P440-FA XX = Optional for customization codes BLOCK DIAGRAM LEFT, MIDDLE, RIGHT & SCROLL BUTTONS 3 Data Buffer Switch Interface 3 MCLK MDAT X/Y/Z Channel Activation Control PS/2 Communication Port X Input Analog Signal Input Y Input Signal Conditioning Control Power Strobe XCLK XDAT 8042 Emulation Port Control PixiPoint TM 5 Z Interface 16-bit Timer Power-On Reset Oscillator Circuit 2 OSCIN-OSCOUT Copyright Semtech 2000-2001 DOC7-PXZ-P440-DS-111 2 www.semtech.com FUNCTIONAL DESCRIPTION The UR7HCPXZ-P440 consists functionally of five major sections (see Functional Diagram, previous page). These are the PixiPointTM Z Interface, the 16-Bit Timer, the Oscillator Circuit, the PS/2 Communication Port and the 8042 Emulation Port. All sections communicate with each other and operate concurrently. SIGNAL CONDITIONING CIRCUIT The PixiPointTM Z sensor is a flexible (but very firm) “beam” with four Strain Gages – one on each of the sides. If the force is applied precisely in the X direction, then it will produce a change of resistance of only the two X gages. Force in the Y direction will cause changes only in the Y gages. One of the pair of the gages will increase, while the other will concurrently decrease the resistance. If the user presses on the sensor from the top (Z Axis), all of the strain gages will decrease the resistance. When the test current is passed through the gages, these resistance changes are converted into the voltage changes. These signals are very small, typically under 1 mV Full Scale. The Signal Conditioning Circuit (patent pending) balances and amplifies the incoming signals for digitizing by a built-in A/D converter. PIN DEFINITIONS Mnemonic VDD VSS VSS2 OSCIN Pin # 8 11 7 9 Type P P P I Name and Function Power Supply: +5V Ground Ground Oscillator Input: external clock input or one side of the Ceramic Resonator with built-i.


UR7HCPXZ-P440 UR7HCPXZ-P440-FA UR7HCPXZ-S440


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