SX8652IWLTRT Semtech, SX8652IWLTRT Datasheet
SX8652IWLTRT
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... Point-of-Sales Terminals Touch-Screen Monitors ORDERING INFORMATION Part Number Package (Dimension in mm) 1 SX8652ICSTRT 12 - Ball WLCSP 1 SX8652IWLTRT 14 - Lead DFN 1. 3000 Units / reel T o the touch screen Revision V1.7/October 2010 ©2010 Semtech Corp. 15kV ESD Low Power 4-Wire / 5-Wire Resistive Touchscreen Controller with SPI Interface KEY PRODUCT FEATURES Extremely Low Power Consumption: 23uA@1 ...
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... PENDET Mode .............................................................................................................................................. 17 8.4. PENTRIG Mode ............................................................................................................................................. 17 9. Host Interface ........................................................................................................................................................ 19 9.1. SPI Read/Write Registers .............................................................................................................................. 19 9.2. SPI Reading Channel Data............................................................................................................................ 19 9.3. SPI Host Commands ..................................................................................................................................... 20 9.4. SPI implementation and multiple Read/Write ................................................................................................ 20 9.5. Invalid Qualified Data..................................................................................................................................... 21 Revision V1.7/October 2010 ©2010 Semtech Corp. Page 2 SX8652 DATASHEET Page www.semtech.com ...
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... AUX Input - 4-wire touchscreen only ............................................................................................................. 25 10.5. Interrupt Generation....................................................................................................................................... 25 10.6. Coordinate Throughput Rate ......................................................................................................................... 25 10.6.1. SPI Communication Time ....................................................................................................................... 25 10.6.2. Conversion Time ..................................................................................................................................... 26 10.7. ESD event...................................................................................................................................................... 26 11. Packaging Information ........................................................................................................................................... 27 11.1. DFN Package................................................................................................................................................. 27 11.2. WLCSP Package ........................................................................................................................................... 28 Revision V1.7/October 2010 ©2010 Semtech Corp. Page 3 SX8652 DATASHEET Page www.semtech.com ...
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... DOUT AUX/WIPER # Figure 2. SX8652 WLCSP Top View, Solder Bumps on Bottom Side YYWW: date code XXXXX: Lot Number Revision V1.7/October 2010 ©2010 Semtech Corp. 15kV ESD Low Power 4-Wire / 5-Wire Resistive Touchscreen Controller with SPI Interface PIN 1 14 (NC) IDENTIFIER NRST 13 12 NCS ...
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... Y+/TR screen X-/TL Y-/BL Figure 3. Simplified block diagram of the SX8652 Revision V1.7/October 2010 ©2010 Semtech Corp. 15kV ESD Low Power 4-Wire / 5-Wire Resistive Touchscreen Controller with SPI Interface Description Conversion Synchronization (4-wire) or Analog Auxiliary Input (4-wire) / Wiper Input (5-wire) Input power supply, connect to a 0.1uF capacitor to GND ...
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... FR4 PCB with thermal vias under exposed pad (if applicable) JA per JESD51 standards. Revision V1.7/October 2010 ©2010 Semtech Corp. 15kV ESD Low Power 4-Wire / 5-Wire Resistive Touchscreen Controller with SPI Interface Symbol V ...
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... High ESD Input - Output C capacitance ,C C Input - Output capacitance Revision V1.7/October 2010 ©2010 Semtech Corp. 15kV ESD Low Power 4-Wire / 5-Wire Resistive Touchscreen Controller with SPI Interface Symbol Conditions Converter stopped, pen detection off, SPI listening, OSC stopped Converter stopped, pen detection activated, device ...
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... Pen detect resistance External components Capacitor between VDD, GND C Revision V1.7/October 2010 ©2010 Semtech Corp. 15kV ESD Low Power 4-Wire / 5-Wire Resistive Touchscreen Controller with SPI Interface Symbol Conditions Time between rising edge VDD and rising NIRQ res off At full scale ...
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... All timing specifications refer to voltage levels (50% VDD, V 2.6. Host Interface Timing Waveforms CSN tCSS SCLK tDS DIN tDCD DOUT Revision V1.7/October 2010 ©2010 Semtech Corp. 15kV ESD Low Power 4-Wire / 5-Wire Resistive Touchscreen Controller with SPI Interface Symbol Condition f SCLK duty T CSS ...
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... Revision V1.7/October 2010 ©2010 Semtech Corp. 15kV ESD Low Power 4-Wire / 5-Wire Resistive Touchscreen Controller with SPI Interface VDD Control ...
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... The host can reset the chip via the SPI interface or with the dedicated pin NRST. The NRST pin is an active low input that provides a hardware reset. An internal pull-up enables the interfacing with devices at different supply voltage. NRST and NIRQ pins are protected to GROUND Revision V1.7/October 2010 ©2010 Semtech Corp. 15kV ESD Low Power 4-Wire / 5-Wire Resistive Touchscreen Controller with SPI Interface ...
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... The Y coordinate is measured in a similar fashion with the measurement setup given in Table 7. R4 ------------------- - Ypos = 4095 Revision V1.7/October 2010 ©2010 Semtech Corp. 15kV ESD Low Power 4-Wire / 5-Wire Resistive Touchscreen Controller with SPI Interface X+ Top conductive sheet before the stylus contact Figure 8. 4-wire Touch Screen the X coordinate Figure 9 ...
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... The pen detection will set the PENIRQ bit of the RegStat register. The PENIRQ bit will be cleared and the NIRQ will be de- asserted as soon as the host reads the status register. In PENDET mode, the pen detection will set NIRQ low. Revision V1.7/October 2010 ©2010 Semtech Corp. 15kV ESD Low Power 4-Wire / 5-Wire Resistive Touchscreen Controller with SPI Interface resistance smaller. ...
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... Table 15). Increasing PowDly settings can also improve the detection on panel with high resistance. In PENDET mode, the pen detection will set NIRQ low. Revision V1.7/October 2010 ©2010 Semtech Corp. 15kV ESD Low Power 4-Wire / 5-Wire Resistive Touchscreen Controller with SPI Interface R2 ...
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... RATE=0), automatic (command ‘MANAUTO’ and RATE>0), pen detect (command ‘PENDET’), pen trigger mode (command ‘PENTRG’). Revision V1.7/October 2010 ©2010 Semtech Corp. 15kV ESD Low Power 4-Wire / 5-Wire Resistive Touchscreen Controller with SPI Interface ...
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... Figure 14 shows the SPI working in automatic mode with CONDIRQ=1. After the first sentence send through the SPI to make the initialization, traffic is reduced as only reads are required. Revision V1.7/October 2010 ©2010 Semtech Corp. 15kV ESD Low Power 4-Wire / 5-Wire Resistive Touchscreen Controller with SPI Interface ...
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... SPI commands in this mode. The host has to wait for the NIRQ interrupt to make the acquisition of the data. The SPI working is illustrated in Figure 15. Revision V1.7/October 2010 ©2010 Semtech Corp. 15kV ESD Low Power 4-Wire / 5-Wire Resistive Touchscreen Controller with SPI Interface TOUCH NIRQ ...
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... All channel data read Release Interrupt NIRQ=1 Timer expire Figure 16. AUTO, PENDET and PENTRIG Mode Flowchart Revision V1.7/October 2010 ©2010 Semtech Corp. 15kV ESD Low Power 4-Wire / 5-Wire Resistive Touchscreen Controller with SPI Interface PENDET MODE Touch Detected ? no yes Set interrupt ...
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... Example: the SX8652 is set to convert X and Y. The value 0xC0 is set in RegChanMsk. The first byte read after the READCHAN command will be X(MSB), then X(LSB), Y(MSB) and at the end Y(LSB). If the host carry on the reading, it will get invalid data. Revision V1.7/October 2010 ©2010 Semtech Corp. 15kV ESD Low Power 4-Wire / 5-Wire Resistive Touchscreen Controller with SPI Interface CR(7:0) ...
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... NCS stay asserted, the register address is automatically increased to allow sequential read/write (or sequential retrieval of data). Between each different operation though (READ/WRITE/READCHAN), the communication should be restarted. This is described in Figure 17. Revision V1.7/October 2010 ©2010 Semtech Corp. 15kV ESD Low Power 4-Wire / 5-Wire Resistive Touchscreen Controller with SPI Interface CR(7:0) ...
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... This occurs: When the SX8652 has read all the channel data in the FIFO When a conversion is done without a pen being detected. Revision V1.7/October 2010 ©2010 Semtech Corp. 15kV ESD Low Power 4-Wire / 5-Wire Resistive Touchscreen Controller with SPI Interface Single Write Multiple Write ...
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... Register Address RA(4:0) 0 0000 0 0001 0 0010 0 0100 0 0101 The details of the registers are described in the next sections. Revision V1.7/October 2010 ©2010 Semtech Corp. 15kV ESD Low Power 4-Wire / 5-Wire Resistive Touchscreen Controller with SPI Interface Register RegCtrl0 RegCtrl1 RegCtrl2 RegChanMsk RegStat ...
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... RegCtrl2 3:0 0000 SETDLY Revision V1.7/October 2010 ©2010 Semtech Corp. 15kV ESD Low Power 4-Wire / 5-Wire Resistive Touchscreen Controller with SPI Interface Description Set rate in coordinates per sec (cps) (± 20%) If RATE =0: Manual mode. if RATE >0: Automatic mode 0000: Timer disabled -Manual mode ...
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... In order to perform correct coordinates acquisition properly, some time must be given for the touch screen to reach a proper level function of the PCB trace resistance connecting the SX8652 to the touchscreen and also the Revision V1.7/October 2010 ©2010 Semtech Corp. 15kV ESD Low Power 4-Wire / 5-Wire Resistive Touchscreen Controller with SPI Interface ...
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... The highest throughput will be obtained with a SPI frequency of 5MHz when the host read the channel data as quickly as possible after the NIRQ falling edge. Revision V1.7/October 2010 ©2010 Semtech Corp. 15kV ESD Low Power 4-Wire / 5-Wire Resistive Touchscreen Controller with SPI Interface ...
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... ESD event. The values LowThreshold and HighThreshold are given for indication only on the table below and should be fine tune according to the system. Revision V1.7/October 2010 ©2010 Semtech Corp. 15kV ESD Low Power 4-Wire / 5-Wire Resistive Touchscreen Controller with SPI Interface ...
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... ADVANCED COMMUNICATIONS & SENSING 11. Packaging Information 11.1. DFN Package (LASER MARK) NOTES NOTES: 1. CONTROLLING DIMENSIONS ARE IN MILLIMETERS (ANGLES IN DEGREES Revision V1.7/October 2010 ©2010 Semtech Corp. 15kV ESD Low Power 4-Wire / 5-Wire Resistive Touchscreen Controller with SPI Interface PIN1 INDICATOR E A SEATING PLANE ...
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... ADVANCED COMMUNICATIONS & SENSING 11.2. WLCSP Package Revision V1.7/October 2010 ©2010 Semtech Corp. 15kV ESD Low Power 4-Wire / 5-Wire Resistive Touchscreen Controller with SPI Interface 1.5±0. INDEX AREA A1 CORNER 2.0±0.10 0.10 C 0.625 Max. 0.25±0.02 C 1.00 0. 0.25 ...
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... No. 89 Sec. 5, Nanking E. Road, Taipei, 105, TWN, R.O.C. Tel: +886 2 2748 3380 Fax: +886 2 2748 3390 EUROPE Semtech Ltd., Units 2 & 3, Park Court, Premier Way, Abbey Park Industrial Estate, Romsey, Hampshire, SO51 9DN. Tel: +44 (0)1794 527 600 Fax: +44 (0)1794 527 601 Revision V1.7/October 2010 © ...