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_______________________________________________________________ maxim integrated products 1 for pricing, delivery, and ordering information, please contact maxim direct at 1-888-629-4642, or visit maxims website at www.maxim-ic.com. max11811 touch evaluation system (tevs) evaluates: max11811 19-5520; rev 0; 9/10 general description the max11811 touch evaluation system (tevs) demonstrates the rich features of the max11811 touch- screen controller (tsc) and allows its evaluation. the tevs consists of a usb interface board (utibb+), max11811 evaluation kit (ev kit), and a 4-wire touch sensor mounted with an linear resonant actuator (lra) motor (usb cable included). the device is a complete resistive touch-sensor controller solution that targets touch-enabled devices with small- to medium-size displays. the device enables miniaturization of consumer products due to its ultra-small size. its low power consumption makes it attractive for portable devices. the tevs with haptics operates directly from the usb power. windows xp ? and windows ? 7-compatible software running on a pc interfaces to the tevs board through the computers usb communications port. see the quick start section for setup and operating instructions. the ev kit daughter board provides a proven pcb layout to facilitate evaluation of the device and must be inter - faced to the appropriate i 2 c timing signals for proper operation. see figures 15, 16a, and 16b for connections and appropriate voltage levels. refer to the max11811 ic data sheet for timing requirements and register addresses. features hardware s complete evaluation system including usb-to-serial interface (i 2 c) board s convenient test points provided on-board for digital interface and analog signals s interfaces to common 4-wire resistive touch sensors through standard fpc connectors 1.25mm pitch 1mm pitch 0.5mm pitch s built-in ldos and level translators for operation with 1.8v, 3.0v, and 3.6v s ir-based driver and proximity sensor included** s integrated haptic controller and driver motor for motor-based haptic feedback software s user-friendly gui interface (microsoft windows xp and windows 7-compatible usb interface and drivers) s easy access to tsc configuration registers and status registers s direct and autonomous conversion-mode demonstration capability s ability to capture raw data and display the data in either conversion mode s pseudo multi-touch demonstration + denotes lead(pb)-free and rohs compliant. * mounted on a 0.125in x 3.5in x 9in plexiglas base. ordering information ev system contents list windows and windows xp are registered trademarks of microsoft corp. ** the gui does not support this feature. part type interface type MAX11811TEVS+ ev system i 2 c qty description 1 software and driver cd-rom. 1* ev kit daughter board (with the tsc mounted on it, but can be separated from the tevs for evaluation of the tsc in the user setup). 1* usb interface board (utibb+). this acts as a gateway converting and accepting data from the usb port to i 2 c for the ev kit. the ev kit plugs into the utibb+. 1* 4-wire touch sensor mounted with an lra motor. 1 usb cable for power and communication.
max11811 touch evaluation system (tevs) evaluates: max11811 2 ______________________________________________________________________________________ component lists max11811 interface board MAX11811TEVS+ block diagram designation qty description a0/csb, a1/dout, csb, en1b, en2b, gnd100, gnd101, gnd102, gpio_k1Cgpio_ k8, miso, p1_4C p1_7, p3_4Cp3_7, pirqb, scl, scl/ clk, sclk, sda, sda/din, tirqb, u2-pin1, u2-pin20 34 test points c1, c2, c11, c13 4 1 f f q 10%,16v x5r ceramic capacitors (0603) tdk c1608x5r1c105k c3, c6, c12, c14 4 10 f f q 20%, 6.3v x5r ceramic capacitors (0603) tdk c1608x5r0j106m c4, c5, c9, c10, c15Cc19, c23, c24, c25 12 0.1 f f q 10%, 50v x7r ceramic capacitors (0603) tdk c1608x7r1h104k c7, c8 2 22pf q 5%, 50v c0g ceramic capacitors (0603) tdk c1608c0g1h220j max11811 usb interface board (utibb+) max11811 ev kit+ 4-wire resistive touch screen i 2 c usb interface to host pc y+ x+ y- x- irq 1.8v to 3.6v/gnd fpc connector haptic motor designation qty description c20, c21 2 10pf q 5%, 50v c0g ceramic capacitors (0603) tdk c1608c0g1h100j c22 1 33000pf q 10%, 16v x5r ceramic capacitor (0603) taiyo yuden emk107bj333ka c26, c27, c28 0 not installed, capacitors fb1, fb2 2 1.5a, 26 i ferrite beads (1206) steward mi1206k260r-10 gnd103, gnd104 2 loops for test with 2 vias (use 20awg wire to make loops) j1Cj5, j11Cj17, j22 0 not installed, headers j6, j7 2 2-pin headers j8, j9, j18, j19 4 3-pin headers j10 1 21-position smd female connector hirose df9-21s-1v(32) j20 1 5-position mini-usb connector hirose ux60a-mb-5st
max11811 touch evaluation system (tevs) evaluates: max11811 _______________________________________________________________________________________ 3 component lists (continued) max11811 interface board (continued) * ep = exposed pad. designation qty description j21 1 dual-row jtag header, 0.1in centers, gold plated led2, led3, led4 3 rgb clear leds (0805) lumex opto sml-lx0805sic r1, r2 2 4.7k i resistors (0805) r3, r4, r10, r19, r32Cr39, r40, r41 0 not installed, resistors r5 1 196k i q 1% resistor (0805) r6 1 590k i q 1% resistor (0805) r7 1 61.9k i q 1% resistor (0805) r8, r22 2 100k i q 1% resistors (0805) r20 1 100k i resistor (0805) r9, r16, r17 3 215 i resistors (0805) r11Cr14 4 0 i resistors (0805) r15, r18 2 51k i resistors (0805) r21 1 169k i q 1% resistor (0805) r23, r24 2 27 i resistors (0805) r25 1 1.5k i resistor (0805) r26 1 2.2k i resistor (0805) r27 1 470 i resistor (0805) r28 1 10k i resistor (0805) r29, r30, r31 3 3.3k i resistors (0805) u1, u7 2 adjustable output ldo regulators (5 sc70) maxim max8512exk+ u2 1 8-channel level translator (20 tssop) maxim max3001eeup+ designation qty description u3 1 ldo regulator (5 sc70) maxim max8511exk25+ u4 1 usb-to-serial uart (32 lqfp) ftdi ft232bl u5 1 1kb, 1.8v srl eeprom (8 so) atmel at93c46en-sh-b u6 1 microcontroller (68 qfn-ep*) maxim maxq2000-rax+ u8 1 octal-level translator (12 tqfn-ep*) maxim max3395eetc+ u9 0 not installed y1 1 16mhz crystal ecs ecs-160-20-5pxdn-tr y2 1 6mhz crystal ecs ecs-60-20-5g3xds-tr y3 0 not installed, crystal 5 bumpers (rubber feet, on bottom of board) 3m sj-5306 (clear) 4 shunts (j8, j9, j18, and j19) sullins stc02syan
max11811 touch evaluation system (tevs) evaluates: max11811 4 ______________________________________________________________________________________ vendor specifications motor vendor and specifications source: aac acoustic technology (www.aacacoustic. com) (see table 1). touch-panel vendor and specification densitron and fujitsu are approved panel vendors for resistive touch-screen controllers from maxim (see tables 2 and 3 for recommended touch panels). * ep = exposed pad. table 1. aac lra motor specification max11811 ev kit daughter board part number elv-10es weight 2.5g (nominal) rated voltage 1.41v rms nominal operating current 60ma max maximum input voltage 1.875v rms operating temperature range -20 n c to +70 n c storage temperature range -40 n c to +80 n c designation qty description c1Cc5 0 not installed, capacitors c6, c9 2 10 f f q 20%, 6.3v x5r ceramic capacitors (0603) tdk c1608x5r0j106m c7 1 0.1 f f q 10%, 50v x7r ceramic capacitor (0603) murata grm188r71h104k c8 1 220pf q 5%, 50v c0g ceramic capacitor (0603) tdk c1608c0g1h221j c10 1 1 f f q 10%, 25v x5r ceramic capacitor (0603) tdk c1608x5r1e105k gnd, gnd1, gnd3, gpi, gpo, pgnd, vbat, vdd, vddin, vddm, vddp, vpd, x+, x-, y+, y- 16 test points j1 1 4-position smd connector fci sfw4r-1ste1lf j2 1 21-position smd male connector hirose df9-21p-1v(32) j3 1 4-position smd connector, gold hirose fh19c-4s-0.5sh(25) designation qty description j4 0 not installed, header j5, j6, j7 3 2-pin headers j8 1 smt connector with through hole molex 39-53-2044 j9Cj12 4 3-pin headers led1 1 red led (0603) lite-on ltst-c190ckt r1Cr5, r7, r8, r9, r17, r18, r19 11 0 i resistors (0603) r6 1 215 i q 1% resistor (0603) r10 1 100k i q 1% resistor (0603) r11, r12, r13, r15 0 not installed, resistors r16 1 5.11k i q 1% resistor (0603) r20 1 32.4 i q 1% resistor (0603) u1 1 touch-screen controller (20 tqfn-ep*) maxim max11811etp+ u2 1 smd proximity sensor, ir avago tech hsdl-9100-021 u3 1 photo sensor agilent apds-9002 2 shunts (j9, j10) sullins stc02syan
max11811 touch evaluation system (tevs) evaluates: max11811 _______________________________________________________________________________________ 5 table 3. fujitsu 4-wire resistive touch- panel specification table 2. densitron 4-wire resistive touch-panel specification figure 1. complete max11811 touch evaluation system (tevs) photo part number t010-1401-t670 outer dimension 61.4mm x 80.3mm transparent area 54.4mm x 71.2mm active area 51.4mm x 68.2mm flex tail 30mm glass thickness 0.7mm pet film features clear transparency 80% part number dts408-0380-00 dts408-0280-00 screen diagonal 3.8in 2.8in dimension (w x h x d) 91mm x 72mm x 0.95mm 70mm x 55mm x 1.4 mm viewing area 81mm x 63mm 59.6mm x 46.1mm active area width (mm) 79mm 58mm active area height (mm) 58mm 44mm package mode film glass transparency 80%
max11811 touch evaluation system (tevs) evaluates: max11811 6 ______________________________________________________________________________________ quick start note: in the following sections, software-related items are identified by bolding. text in bold refers to items directly from the ev kit software. text in bold and under - lined refers to items from the windows operating system. procedure (tevs software and usb driver installation) 1) before plugging the tevs into an available port on a windows xp or windows 7 pc, the tevs software must be installed. 2) ensure that the jumpers on the utibb+ board are in the following positions: j8: 2-3 j9: 2-3 j19: 1-2 3) the software comes with the usb driver and a gui application. unzip the files and save the contents in an easily accessible location. 4) locate the setup.exe file and double-click on it, then follow the instructions for installation. 5) the driver for the ev kit is installed in the following location: c:\maxim tsc usb driver cdm20602 6) the application along with its supporting files is located at: c:\program files\maxim integrated products\ max118xx evs 7) a shortcut to the application executable file is created on the desktop and in the start | programs menu. 8) to uninstall the software, go to my computer | add or remove program. figure 2. max11811 touch evaluation system (tevs) block diagram haptic motor max11811 usb interface board (utibb+) max11811 ev kit+ 4-wire resistive touch screen i 2 c usb interface to host pc y+ x+ y- x- irq 1.8v to 3.6v/gnd fpc connector
max11811 touch evaluation system (tevs) evaluates: max11811 _______________________________________________________________________________________ 7 detailed description of hardware ensure that the max11811 ev kit daughter board is properly mounted on the utibb+ and the touch-screen panel is properly connected to the daughter board. the daughter board houses the touch-screen controller ic. this module processes the data from the touch-screen panel connected to it and streams it out to the utibb+ interface board. the utibb+ acts as an intermediary gateway that converts the i 2 c (signal levels and protocol) into the usb for processing by the pc. the utibb+ includes a maxq2000 microcontroller to carry out this task. hardware installation note: install the software before starting this step. connect the tevs to the pc using the usb cable provided. a dialog box appears, as shown in figure 3. click on the install from a list or specific location (advanced) radio button and then press the next > button. type c:\maxim tsc usb driver cdm20602 in the edit box, as shown in figure 4, or press the browse button to find the cmaxqusb driver folder. press the next > button to proceed. during the installation steps, a hardware installation warning message is displayed, as shown in figure 5. press the continue anyway button to proceed. follow all the steps that come up next and exit when done. at the end of the process, the driver is installed and the device is ready to be used. disconnect and plug the device back in again. figure 3. found new hardware wizard dialog
max11811 touch evaluation system (tevs) evaluates: max11811 8 ______________________________________________________________________________________ figure 4. search for the best driver figure 5. windows logo testing warning
max11811 touch evaluation system (tevs) evaluates: max11811 _______________________________________________________________________________________ 9 max11811 tevs gui description after successful installation of the driver, connect the tevs to the pc using the usb cable. start the gui by double-clicking on the max118xxevs .exe file. following a successful communication link, the gui indicates what it has found at two locations on the gui: 1) the window caption: max11811 4-wire advanced touch screen controller 2) the status bar: tsc communication: i2c tsc device found i2c addr. = 0x96 usb comm. successful registers tab the registers tab shown in figure 6 displays a successful communication link with a tsc device. this tab displays the registers related to x, y, z1, and z2 measurement of the device. the user can manipulate the register values by changing the binary bit patterns on the right or the hex values on the left. refer to the max11811 ic data sheet for details on the registers. upon startup, factory-default values of the tsc registers from the max11810-11_init.ini files are loaded onto the gui and then written into the tsc. the user can change the factory-default values in the max11810-11_init.ini file, with new values entered by the user on the gui by selecting the file | save option from the menu bar. this overwrites the factory-default values in the max11810-11_init.ini file. the user also has the option to save the register values on the gui screen under a different name by selecting the file | save as option, and to open and load a previously saved file by selecting the file | open and load option. the gui automatically writes to the tsc when a new .ini file is opened and loaded. however, when the user individually manipulates bits on the gui screen, it must be followed by pressing the write registers button. the read registers button reads all the registers from the tsc and displays it in the binary and hex fields. at any time, the computer mouse can be scrolled over a checkbox (the bit indicators) and the status with a description of the bit is indicated by the tool tip. note: any changes on the gui must be followed by a press of the write registers button for the value to be loaded into the tsc. haptic registers tab the haptic registers tab holds registers for configuring the haptic patterns (refer to the max11811 ic data sheet for details on the registers). the user can manipulate the values through the drop-down combo boxes and the various checkboxes. as in the registers tab, the factory-default values from the max11810-11_init.ini files are loaded onto the gui and then written into the tsc at startup. the quickest way to test the haptic patterns is to use the preprogrammed set of values given in the drop-down combo boxes. the drop-down combo box in green is for the linear resonant actuator (lra) motor and the drop- down combo box in yellow is for the eccentric rotating mass (erm) motor (see figure 7). the user also has the ability to enable haptics (check - box) and generate haptic (button). a delay can also be entered in milliseconds for the haptic to be generated through the haptic delay edit box. any manual changes made to the registers should be followed by pressing the write registers button for the value to be sent to the tsc. as in the registers tab, the user can change the factory- default values in the max11810-11_init.ini file, with new values entered on the gui using the file | save option from the menu bar. this overwrites the factory-default values in the max11810-11_init.ini file. the user also has the option to save the register values on the gui screen under a different name using the file | save as option, and to open and load a previously saved file by using the file | open and load option. touch data tab the touch data tab displays the user inputs on the touch panel on a screen. the user can make various selections to display a combination of x, y, z1, and z2 data along with their processed/mathematical interpretation. as in the haptic registers tab, the user can enable haptics (checkbox) and also apply a delay in milliseconds through the haptic delay edit box. the drop-down combo box with preprogrammed haptic patterns is also available in this tab for both the lra and erm motor. the tsc has two modes of operation, direct and autono - mous. refer to the max11811 ic data sheet for more details. direct mode: direct mode can be selected in the registers tab by selecting it in the operating mode
max11811 touch evaluation system (tevs) evaluates: max11811 10 _____________________________________________________________________________________ figure 6. registers tab
max11811 touch evaluation system (tevs) evaluates: max11811 ______________________________________________________________________________________ 11 figure 7. haptic registers tab
max11811 touch evaluation system (tevs) evaluates: max11811 12 _____________________________________________________________________________________ configuration register, or by selecting it in the touch data tab, as shown in figure 8. autonomous mode: autonomous mode can be selected in the registers tab by selecting it in the operating mode configuration register, or by selecting it in the touch data tab, as shown in figure 9. raw data the raw data tab (figure 10) displays a stream of raw data collected during the operation of the tsc. this data can be saved for data analysis by pressing the save data button. multi-touch tab the multi-touch tab (figures 11, 12, and 13) gives a simple demo of the multi-touch on a resistive panel. use the touch panel to enlarge and reduce the picture found in this tab. this works only in the autonomous mode. contact the factory for details on this feature. proximity sensing tab the gui currently does not support this feature. however, this feature is available in the tevs hardware and the tsc chip fully supports this feature, as described in the max11811 ic data sheet. reg. data snd/rcv tab the reg. data snd/rcv tab lets the user send and receive multiple data to the tsc registers. figure 14 shows an example where the first line is writing 0xf1 to register 0x01 (the activate checkbox must be checked). the second line reads register 0x01 with what was written in the first line. the tsc + eval. sys. response (hex) box shown in figure 14 displays the whole protocol and may be of interest while debugging only. the 4f 4b 00 is the response from the tevs following a successful write and is the ascii ok, 5a 00 01 f1 is the response from the tevs for a request read, 5a is a sync byte, 00 is reserved, 01 indicates that 1 byte of data is to follow, and f1 is the (1 byte) data. the tsc response only (hex) box displays the tsc response only. since the only relevant information is the register data, it displays f1 (the content of register 0x01).
max11811 touch evaluation system (tevs) evaluates: max11811 ______________________________________________________________________________________ 13 figure 8. touch data tab (direct mode)
max11811 touch evaluation system (tevs) evaluates: max11811 14 _____________________________________________________________________________________ figure 9. touch data tab (autonomous mode)
max11811 touch evaluation system (tevs) evaluates: max11811 ______________________________________________________________________________________ 15 figure 10. raw data tab
max11811 touch evaluation system (tevs) evaluates: max11811 16 _____________________________________________________________________________________ figure 11. multi-touch tab (before zoom out and rotate)
max11811 touch evaluation system (tevs) evaluates: max11811 ______________________________________________________________________________________ 17 figure 12. multi-touch tab (single-touch active)
max11811 touch evaluation system (tevs) evaluates: max11811 18 _____________________________________________________________________________________ figure 13. multi-touch tab (after zoom out and rotate during the multi-touch mode)
max11811 touch evaluation system (tevs) evaluates: max11811 ______________________________________________________________________________________ 19 figure 14. reg. data snd/rcv tab
max11811 touch evaluation system (tevs) evaluates: max11811 20 _____________________________________________________________________________________ figure 15. max11811 ev kit schematic
max11811 touch evaluation system (tevs) evaluates: max11811 ______________________________________________________________________________________ 21 figure 16a. max11811 interface board schematic (sheet 1 of 2)
max11811 touch evaluation system (tevs) evaluates: max11811 22 _____________________________________________________________________________________ figure 16b. max11811 interface board schematic (sheet 2 of 2)
maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a maxim product. no circuit patent licenses are implied. maxim reserves the right to change the circuitry and specifications without notice at any time. maxim integrated products, 120 san gabriel drive, sunnyvale, ca 94086 408-737-7600 23 ? 2010 maxim integrated products maxim is a registered trademark of maxim integrated products, inc. max11811 touch evaluation system (tevs) evaluates: max11811 revision history revision number revision date description pages changed 0 9/10 initial release

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