UR7HCTS2-S840-FG Semtech Corporation, UR7HCTS2-S840-FG Datasheet
UR7HCTS2-S840-FG
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UR7HCTS2-S840-FG Summary of contents
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... The IC operates Volts. Features of Semtech’s motion algorithm include resistance to RF and other noise which provides smooth and precise motion control. The UR7HCTS2-S840 also works flawlessly with any 4 or 8-wire touch screen, regardless of size or manufacturer. The cost-effective solution requires ...
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... Other Materials Type ScreenCoder TM SPI/Serial Evaluation Kit Note 1: XXX= Denotes Revision number Left Button Switch Interface Touch Panel Interface Sensor Interface 8042 Emulation port 2 TA=-20° +85° C UR7HCTS2-S840-FG Order number EVK7-TS2-S840-XXX Right Button Drivers for Touch Screen 4 Sense Line 4 XCLK XDAT www.semtech.com ...
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Copyright Semtech 2000-2001 DOC7-TS2-S840-DS-102 PIN DEFINITIONS Mnemonic Pin # Type Name and Function VDD 8 P Power Supply VSS 11 P Ground VSS2 7 P Ground OSCIN 9 I Oscillator Input: external clock input or one side of the Ceramic ...
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... FUNCTIONAL DESCRIPTION The UR7HCTS2-S840 consists functionally of five major sections (see the Functional Diagram). These are the Sensor Interface, Power Management section, the 16-Bit Timer, the Oscillator Circuit and the Serial Peripheral Interface (SPI) and the Asynchronous Serial Interface (Serial). All sections communication with each other and operate concurrently ...
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POWER MANAGEMENT (CON’T) System-coordinated Power Management Normal Operation State: In normal operation state, both the _PWR_DOWN and XPWRS pins are in high state. The ScreenCoder TM SPI/Serial operations are controlled by Self-Power Management TM . Critical Suspend: At any time, ...
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TOUCH SCREEN SENSOR INTERFACE (CON’T) Touch Measurement Position information is only collected if it has been determined that the touch pressure is sufficient for an accurate reading. To obtain position information from the Resistive Touch Screen Sensor, the ScreenCoder four ...
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... WheelMouse and 5-button mice. Identification and Revision for ScreenCoder TM SPI/Serial The UR7HCTS2-S840 offers a special identification and revision package. This package uses the absolute mode format, but will not appear in the normal absolute mode. For normal absolute mode, the first byte will be 80 Hex or 9F Hex ...
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... To assure fast transmission, the system must assert _RTS low as soon as possible. If the system is ready to receive the data, it doesn't have to raise _RTS between packages. The UR7HCTS2-S840 checks _RTS after every byte transmission. If _RTS returns to high, it means that the transmission was unsuccessful. The IC will raise _CTS to abort the transmission and the entire package will be re- transmitted ...
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... When a byte is transferred successfully, the system has to wait a minimum of 50us to begin the clocks for next byte transmission. 5. When the mouse package is transmitted, the system stops the SPI clock needs to communicate with other SPI devices, it has to wait for _ATN return to high. _ATN high means the SPI port of UR7HCTS2-S840 is now in high Impedance State. _ATN ...
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... PROTOCOLS FOR THE UR7HCTS2-S840 IN SPI MODE (CON’T) SPI Communication Timing Parameters Symbol Description t1 _ATN low to _SS low t2 _SS low to first clock (_SS toggles for every package) t2’ _ATN low to first clock (_SS low) t3 Last clock of transmitted byte to next byte’s first clock ...
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... SUGGESTED INTERFACING FOR THE SCREENCODER Copyright Semtech 2000-2001 DOC7-TS2-S840-DS-102 TM SPI/SERIAL UR7HCTS2-S840-FG IN SERIAL MODE SHIEL XCLK VDD 17 8 XDAT VSS2 18 7 RVSD1 RESET 19 6 XL2 VREF 20 5 YT2 CTS/ATN 21 4 YB2 XPWRS 22 3 XR2 SXR SYB ...
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... SUGGESTED INTERFACING FOR THE SCREENCODER Copyright Semtech 2000-2001 DOC7-TS2-S840-DS-102 TM SPI/SERIAL UR7HCTS2-S840-FG IN SPI MODE SHIEL XCLK VDD 17 8 XDAT VSS2 18 7 RVSD1 RESET 19 6 XL2 VREF 20 5 YT2 CTS/ATN 21 4 YB2 XPWRS 22 3 XR2 SXR SYB ...
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MECHANICAL INFORMATION FOR THE FG PACKAGE Detail Recommended PCB Footprint Copyright Semtech 2000-2001 DOC7-TS2-S840-DS-102 Symbol ...
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... Supply Voltage Vdd Input Voltage Vin Current Drain per Pin I (not including Vss or Vdd) Operating Temperature Ta UR7HCTS2-S840 Storage Temperature Range Tstg DC Electrical Characteristics, Temperature range=T low to T high unless otherwise noted) Characteristic Symbol Supply Voltage Output Voltage (10 µA load) Voh Vol ...
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... SCREENCODER TM SPI/SERIAL BILL OF MATERIALS FOR PAGE 12 SCHEMATIC UR7HCTS2-S840-FG BOM Description Quantity Manufacturer Bare PCB: PCB1 1 USAR Capacitor: C1 Generic C2, C3, C7 Generic C5, C10 2 Generic C6 Generic C11-C14 4 Generic Custom IC USAR U4 1 USAR ICs Analog Devices U3 TelCom Inductor Generic ...
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... Telephone +49 (0)8161 140 124 Telefax Copyright 2000-2001 Semtech Corporation. All rights reserved. MouseCoder, ScreenCoder and Self-Power Management are trademarks of Semtech Corporation. Semtech is a registered trademark of Semtech Company. All other trademarks belong to their respective companies. INTELLECTUAL PROPERTY DISCLAIMER This specification is provided " ...