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Analog Resistive Touch Screen Controller FIT

1. Co Ltd Interface with Touch Analog Resistive Touch Screen Controller FIT 10 Series User s Guide Co Ltd Interface with Touch FIT 10 Series User s Guide Table of Contents E O bo N N G Co GQ G agg Prod ct u a Sete 2 Products Applicable 5 2 e eit e et Ue lectae e IRR Re te ee e Lone 2 Product Names iiie riore eret det oui tec dos een Qao ter dae Fee tees eder de xe 2 arela ii el a Ee E CE 2 Ove MEW aus 3 Features nee Lue liama ede 3 General Specificalioris ere Ue RU 3 Peripheral 4 uu ence 5 OVE VIG eat Cd I not e 5 Initializing Mode amp Idling Mode 6 Coordinate Mode iiss Sots Lr 7 Calibration Setup qct giantess o ia UE 9 Calibration RAGING an potere epe u d P Putus DEUS 13 Calibration Mode uere a 14 Setting Example 1 D ee b e ste eee 16 Te acl 17 l ist of Commangds Res
2. 13 Rev 3 2000 2002 DMC Co Ltd DMC Co Ltd Interface with Touch FIT 10 Series User s Guide 2 6 Calibration Mode This mode transmits the calibrated coordinates using the data set in Calibration Setup Mode This mode can be used to adjust the touch and cursor to absorb the electrical loss and tolerance This mode employs the function to limit the maximum coordinate for its function This mode be entered by receiving either one of DAh 2Ah 3Ah Start Calibration Mode in Idling Mode and exited to Idling Mode by receiving OBh End Calibration Mode Receiving 55h Reset switches the modes to Initialization Mode 1 byte of pen down ID followed by the coordinate data is transmitted when a touch is detected when a finger or a pen touches the touch screen and 1 byte of pen down ID is transmitted when the touch is ter minated when a finger or a pen leaves the touch screen point mode excluded Correspondence and Mode Transition Host OAh 2Ah 3Ah Coordinates 06h FIT 10 Calibration Mode Idling Mode Start amp End Calibration Mode Command 1 byte Mode Command Function Coordinate data is transmitted according to the sampling rate setting and one pen up ID is transmitted when touch is terminated No input for 20 sampling duration enables Power Saving Mode Pen up IDs are transmitted according to the sampling rate Start Calibration Data 2 2Ah
3. Item Rating Remarks FIT 10 IC DC 2 7V to 6 0V ly Vol E Supply Voltage FIT 10 IF DC 45V to 55V FIT 10 IF E 16 4mA VCC 5 0V 7 8mA VCC 3 3 Supply Current At sampling Rate 30p s FIT 10 IF 17 8mA FIT 10 IF E FIT 10 1C Bb Operating Tem No dew condensation FIT 10 IF 10 to 60 C FIT 10 IF E No dew condensation FIT 10 1C Storing Tem No dew condensation FIT 10 IF 25 to 80 FIT 10 IF E No dew condensation Format Asynchronous Serial Transfer Rate 9600bps Correspondence Data Format 8bit Fixed value Stop Bit 1bit Parity None Frequency FIT 10 IC 10MHz 10MHz fixed 1 Point Mode Point Mode Transmits one pen down S lina R ints 2 30p s 3 50p s ID when a touch is detected No ampling Rate points sec 4 80p s 5 100p s pen up ID is transmitted when the 6 130p s 7 150p s touch leaves the screen Varies if the maximum coordinate is Resolution 10 bit 1024 x 1024 set below in Calibration Setup Mode FIT 10 IC 24 7 W x 8 7 D x 3 35 H Dimension mm FIT 10 IF W x 40 D H FIT 10 IF E ide a nae Rev 3 2000 2002 DMC Co Ltd DMC Co Ltd Interface with Touch FIT 10 Series User s Guide 1 7 Peripheral Composition Overview In order to measure the coordinate of the X resistive layer a certain voltage 5V in this case is needed to be supplied from the peripheral circuit of FIT 10 to the either one of
4. 2 Y P 2 Display Points P01 P10 P11 1 byte X Raw Coordinate 2 byte 1 byte KS 1 byte Y Raw Coordinate 2 byte diia T 22 X Calibration Data 2 byte Y Calibration Data 2 byte 00 Coordinate 8 byte P01 Coordinate 8 byte 1 byte X Raw Coordinate 2 byte P10 Coordinate 8 byte 1 byte Y Raw Coordinate 2 byte P11 Coordinate 8 byte X Calibration Data 2 byte X Max Coordinate 2 byte Y Calibration Data 2 byte o Y Max Coordinate 2 byte 1 byte 11 Rev 3 2000 2002 DMC Co Ltd DMC Co Ltd Interface with Touch FIT 10 Series User s Guide Example 2 Maximum point setting Example 3 5 point setting X P 5 5 Calibration Points X_P 5 Y_P 5 Calibration Points P02 P03 P04 P12 P13 P14 P22 P23 P24 P32 P33 P34 P42 P43 P44 0Dh byte OEh 1 byte byte 00 Coordinate 8 byte 1 byte P01 Coordinate 8 byte 00 Coordinate 8 byte P10 Coordinate 8 byte P01 Coordinate byte P11 Coordinate 8 byte P02 Coordinate 8 byte PCT Coordinate 8 byte e e Max Coordinate 2 byte P43 Coordinate 8 byte Y Max Coordinate 2 byte P44 Coordinate 8 byte X Max Coordinate 2 byte of POO P10 P11 Y Max Coordinate 2 byte PJ 7 Me 12 Rev 3
5. ROHM equivalent UJ m T un Ww rn SH SE E 1999 DMC Co Ltd P31 700 OWA 1112412 3I 01 113 Nd 22 06661 3391 areas noo 76 25 00 433 6 4 10 d33 e d AS 933 179 50 33 04 x nro OAS ZId TAS 91d 735 ND3d33 SId vid Eld eid Ud Old 108 90d 00 Sod re 72 504 Tod 00d 666 N5 1454 111 P21 700 OWA easy 9NIAVM 1102412 3 31 01 113 L Nd 22 06661 3391 atsa NOOT nev 213 914 3S 933 179 1 50 d33 0rd 4 x nro OAS ZId TAS 91d 735 ND3d33 SId vid Eld eid Ud Old 104 90d 00 Sod 27 70 12 92 666 N5 1454 111 7 02 OWA SNOISNAWIG ONILNNOW YOLIINNOD 0 Luvd Na aea GNI N2 aul Uaroug x OWA 666L 0 0000 25 s3 L 64 94 23 9 50 ela 9 IT 27 703 OWA 66619 SNOISNAWIG DNILNNOW YOLIINNOD 5 0 LuVd 0 LL a O Bn n 64 94 ral 19 Loa 69 154 45 90
6. 2000 2002 DMC Co Ltd 201 Co Ltd Interface with Touch FIT 10 Series User s Guide 2 5 Calibration Reading Mode The calibration data stored in EEPROM can be read in this mode This mode is used to verify the setting or testing the calibration data Not used on FIT 10 IF This mode can be entered by receiving 1Dh Load Calibration Data in Idling Mode and exited to Idling Mode when the transmission is completed Correspondence and Mode Transition Host 1Dh Setup Coordinates Max Points FIT 10 Calibration Reading Idling Mode Calibration Data Format Regardless the number of calibration point setting the calibration data is transmitted in the format of max point setting 25 point setting except that 5 point setting is transmitted in the format of 9 point set ting Number of calibration points X axis X_P Y axis Y_P Minimum 2 Maximum 5 Max Point Setting 9 Point Setting P02 P04 P12 P13 P14 P22 P23 P24 P32 P33 P34 1 byte P42 P43 P44 1 byte X Raw Coordinate 2 byte 1 byte Y Raw Coordinate 2 byte 1 byte nd P00 Coordinate 8 byte P01 Coordinate 8 byte lt x 70 X Calibration Data 2 byte P02 Coordinate 8 byte Y Calibration Data 2 byte 8b P43 Coordinate yte P44 Coordinate 8 byte Upper 1 byte X Max Coordinate 2 byte Lower 1 byte 2 Y Max Coordinate byte B
7. Supply ICC1 Idling Mode 7 8 mA Ens 2 Data Transmission 7 8 mA Supply Current ICC3 Stop Mode 10 uA Data Transmission At Touch on 35 FIT 10 IC Supply 180 10 5 Circuit Current Current Actual Value at IPOFF Power Saving 10 uA X 415 Y 299 IIDOL Idling Mode 8 0 mA ISTOP Stop Mode 10 uA 8 FIT 10 IF FIT 10 IF E Vin 5 0V ificati Item Symbol Condition Unit Remarks Min Reg Max H Voltage VOH 2 0 2 4 V L Voltage VOL IOL 1 8mA 0 4 V 130 Data T 227 17 8 ata Transmission Supply 30 At Touch on 188 UA FIT 10 IF FIT 10 IF E Current 180 20 5 mA Circuit Current Actual Value at CN5 IPOFF Power Saving 10 uA X 415 Y 299 IIDOL Idling Mode 16 4 mA ISTOP Stop Mode 10 uA ee 23 Rev 3 2000 2002 DMC Co Ltd DMC Co Ltd Interface with Touch FIT 10 Series User s Guide 4 Changes amp Improvements 4 1 Version History 10 VER1 0 to VER2 0 Fixed the problem that FIT 10 freezes on certain IBM PC AT compatibles at startup and mode transi tion Added capability to supply power from RS 232C 8 FIT 10 IF FIT 10 IF E VER1 0 to VER 2 0 Circuit change for FIT 10 IC change RS 232C interface circuit change and power line addition 3 pin to 5 pin change on for the power line Added surge protection circuit Connector no change VER2 0 to Rev C Fixed the problem that 2 54mm pitch connecto
8. 931 703 OWA 6661 SNOISNSWIG TWNYILX3 WNUILX3 3 41 01 114 mew 4I 0L 113 2050 6661 aea ec OR QG cC I 0 nen ee uide uide 3262 54 H3 88S SND 40 ISr H3 8SS 8D04UALU 9252 5 03 2 Uo 40 ISF HA ASS won quejownba Jo vS r2 Sane LN VE USAI INS 5401490 jo ajduox3 1 4anddns N d ON uu03 palddns si 4 pauinbau 300 G E E seu r 2282 5 panddns 5 ji pauinbau ON 2x 3 ZNI 40 IND Tx u231d Tx uaaJ2su no lt 6 AG y NI Od 49314 uucg T Tx uaa42suono lt 09 5
9. Mode or Calibration Mode after the stabilization time set by terminal 37 P13 and 38 P14 27ms for FIT 10 IF FIT 10 IF E H e 4 5 Rev 3 2000 2002 DMC Co Ltd DMC Co Ltd Interface with Touch FIT 10 Series User s Guide 2 2 Initialization Mode and Idling Mode At power on FIT 10 performs internal initialization approx 500msec and enters Initialization Mode so that FIT 10 can correspond to the host Sampling rate can be set and EEPROM data is loaded if EEPROM is installed Receiving 05h S_Rate Set Sampling Rate resolves the sampling rate that the coordinate data is transmitted FIT 10 returns 06h ACK or 15h NAK according to the touch screen and EEPROM data status and switches modes from Initialization Mode to Idling Mode Each mode can be entered from this mode Correspondence and Mode Transition Host FIT 10 Idling Mode Initializing Mode Internal Initialization lt Internal Init Approx 500ms Set Sampling Rate S_Rate Command Mode Sampling Command Remarks 30p s 40h 50p s 41h 80p s 42h 100 5 43h 130p s 44h 150p s 45h Point Once on touch 50h No pen up ID Response with no EEPROM Condition Response Format Description OK 06h ACK 1 byte Touch screen properly connected NG 15h NAK
10. N c To host DMC co Ltd Interface with 10 Series User s Guide 2 Modes 2 1 Overview Initializing Mode The period between power on and FIT 10 performs internal initialization to establish correspondence to the host EEPROM Data is loaded in this mode if EEPROM is installed Idling Mode Waiting mode after the correspondence to the host is established This mode can be entered by re ceiving 05h either one of 40 45h 50h Set Sampling Rate in Initialization Mode Each mode can be entered from this mode Coordinate Mode Raw 10bit coordinates are transmitted in this mode This mode can be entered by receiving either one of 01h 21h 31h Start Coordinate Mode in Idling Mode and exited to Idling Mode by receiving 02h End Coordinate Mode Receiving 55h Reset switches the modes to Initialization Mode Calibration Setup Mode Setup mode to setup the calibration data used in Calibration Mode Receiving ODh OEh Start Setup Mode switches modes to this mode Setup is performed by selecting the designated point numbers from X22 2 4 point calibration to X 5 Y 5 25 point calibration Calibration Reading Mode Not applicable to FIT 10 IF EEPROM data can be read in this mode if EEPROM is installed This mode can be used to test the calibration data in EEPROM set in Calibration Setup Mode This mode can be entered by receiving 1Dh Read Calibration D
11. setting and the coordinate data is transmitted when touch is detected Power Saving Mode is disabled Coordinate data is transmitted according to the sampling Start Calibration Data 3 3Ah rate setting and one pen up ID is transmitted when touch is terminated Power Saving Mode is disabled Exits Calibration Mode and returns to Idling Mode Ap plicable to 1 3 Start Calibration Data 1 0Ah End Calibration Data OBh Power Saving Mode Power Saving Mode is enabled when no touch is detected in 20 sampling duration in Calibration Mode switched by receiving OAh This mode stops the oscillation of the crystal and enables the low power mode Any input or any command from the host releases this mode and switches modes to Idling Mode after the stabilization time set by terminal 37 P13 and 38 P14 27ms for FIT 10 IF FIT 10 IF E In order to receive OBh Power Saving Mode must be exited A command or a touch must be transmitted to exit Power Saving Mode and OBh must be followed before 20 sampling duration elapses Host FIT 10 Idling Mode Calibration Mode Power Saving Mode T 1 lt lt gt 20 Sampling Stabilization 20 Sampling 14 Rev 3 2000 2002 DMC Co Ltd 21 Co Ltd Interface with Touch Data Details FIT 10 Series User s Guide Pen down ID Pen up I
12. 1 byte Touch screen not connected Response with EEPROM installed Condition Response Format Description OK 06h ACK 1 byte Touch screen connection amp EEPROM OK 15 NAK Code 2222 LC puru UT T EE A AO eos e od bito 1 01h No Data in EEPROM NG 12222244 bitt 1 02h gt pyte EEPROM data error 22020000 PEN bit2 1 04h _ EEPROM writing eror 1 bit3 1 08h Touch screen not connected P j a 2 6 Rev 3 2000 2002 DMC Co Ltd Co Ltd Interface with Touch FIT 10 Series User s Guide 2 3 Coordinate Mode This mode transmits the raw coordinate data as the result of A D conversion from the analog input This mode can be used to obtain the raw data needed to create the calibration data in Calibration Setup Mode This mode does not employ the function to limit the maximum coordinate for its function This mode can be entered by receiving either one of 01h 21h 31h Start Coordinate Mode in Idling Mode and exited to Idling Mode by receiving 02h End Coordinate Mode Receiving 55h Reset switches the modes to Initialization Mode 1 byte of pen down ID followed by the coordinate data is transmitted when a touch is detected when a finger or a pen touches the touch screen and 1 byte of pen down ID is transmitted when the touch is ter minated when a finger o
13. 8 FIT 10 IC AVSS VSS 0 0V Item Symbol Rating Unit Remarks Min Max AVCC and VCC must be in the VCC VSS 0 3 VSS 7 2 V same potential VCC must not Supply Voltage AVCC VSS 0 3 VSS 7 2 V exceed AVCC i e at power on AVR VSS 0 3 Must satisfy both values VI VSS 0 3 VCC 0 3 V vss 0 3 55 70 V P51 only V VSS 0 V V Output Voltage 2 55 08 VO2 VSS 0 3 VSS 7 0 V P51 only L Level IOL 20 mA Peak Output Current IOLAV 4 mA Average L Level Total IOL 100 mA Peak Output Current IOLAV 40 mA Average H Level HOL 20 mA Peak Output Current HOLAV 4 mA Average H Level Total HOL 50 mA Peak Output Current HOLAV 20 mA Average Power Consumption PD 500 mW Operating Temp TA 40 85 Storing Temp Tstg 55 150 C 3 3 Recommended Specification FIT 10 IC AVSS VSS 0 0V Item Symbol Rating Unit Remarks Min May Supply Voltage VCC 2 7 6 0 V H Input Voltage VIH 0 8VCG VCC 0 3 V L Input Voltage VIL VSS 0 3 0 2VCC V Clock Frequency fCH 10 0 MHz 10MHz Fixed 8 FIT 10 IF FIT 10 IF E Item Symbol Ratina Unit Remarks Min May Voltage CN5 VCC 4 5 5 5 V H Input Voltage VIH 0 8Vin Vin 0 3 V L Input Voltage VIL 0 3 0 2Vin V A stable power source is required when power is supplied to CN5 to avoid malfunction caused by sudden voltage change The power needs to be supplied to either one of CN3 or CN5 21 Rev 3 2000 2002 DMC Co Ltd Co Ltd Interface with Touch
14. D Bit Order 7 6 5 4 3 2 1 0 Bit Order 7 6 5 4 3 2 1 0 Data SWOSW10 1 0 0 O 1 Data SWOSW10 1 0 0 0 0 Pen down ID Pen up ID ID SW0 SW1 ID SW0 SW1 11h 0 0 10h 0 0 51h 0 1 50h 0 1 91h 1 0 90h 1 0 Dih 1 1 DOh 1 1 Data Example Started by receiving OAh or 3Ah in the case of X 0374 Y 01A9 Touch on 2 t Touch off Oth Bit Order 7 0 6 5 4 3 Data 0000 2 1 0 0 Bit Order Data 7 6 5 10 4 3 1 0 1 Data Example Transmitted by receiving 2Ah t Touch off Touch on s Nnrusisinn Rev 3 2000 2002 DMC Co Ltd 41 DMC Co Ltd m Interface with Touch FIT 10 Series User s Guide 2 7 Stop Mode This mode can be entered by receiving OFh Start Stop Mode in idling Mode This mode stops the os cillation of the crystal and enables the low power consumption mode Performing hardware reset switches the modes to Initializing Mode or receiving 00h Null releases MPU stop and switches modes to Idling Mode after the stabilization time set by terminal 37 P13 and 38 P14 27ms for FIT 10 IF FIT 10 IF E Host FIT 10 Idling Mode e OO O Stop Mode Stabilization 16 Rev 3 2000 2002 DMC Co Ltd Co Ltd Interface with Touch 2 8 Mode Chart Command 20 Sampling Coordinate Mode ODh Completed Calibrat
15. FIT 10 Series User s Guide 3 4 AC Specification Reset Timing FIT 10 IF FIT 10 IF E FIT 10 IC VCC 5V 10 RST L Width TZLZH 48TXCYL RST H Width TZHZL 24TXCYL RST Clock Timing FIT 10 IC VCC 5V 10 Remarks Clock Frequency CH 10MHz Fixed Clock Pulse Width PWH L 20 ns Rising Falling Time TCR TCF For External Clock 10 ns XO Crystal External Clock LI X1 22 Rev 3 2000 2002 DMC Co Ltd 21 Co Ltd Interface with Touch FIT 10 Series User s Guide 3 5 DC Specification 8 FIT 10 IC VCC 5 0V ificati Item Symbol Condition Specification Unit Remarks Min Reg Max H Voltage 2 0 2 4 V L Voltage VOL IOL 1 8mA 0 4 V ICC1 Idling Mode 16 3 mA upply LXX 10 Current ICC2 Data Transmission 16 4 mA Supply Current ICC3 Stop Mode 10 uA 130 2s 17 8 mA Data Transmission Suppl e At Touch on TE 12 pply Actual Value at Current IPOFF Power Saving 10 uA X 415 299 IIDOL Idling Mode 16 4 mA ISTOP Stop Mode 10 uA VCC 3 3V ificati Item Symbol Condition Spseiticsob Unit Remarks Min Reg Max Voltage VOH IOH 1 5mA 1 5 V L Voltage VOL IOL 1 0mA 0 4 V
16. M 1 moni 21 L IL 20 M_I RST 02d 0 4 OMS ZLId IAS 91d eld 735 WO03d33 S1Id 4d SSAV JIAV Old 134 99d 94 204 904 04 703 ENV E9d 20d INV I9d 104 0 094 004 SSA ISd 154 cSd Lu gt a DI C TI 161 P43 EEP_DO T 160 P41 EEP_SK T 162 P40 EEP_CS T 163 P32 RD P42 EEP 1999 DMC Ltd 9371 703 OWA 6661 UDUD WW EASY SNUISN3AIT 1 31 3 ON J x 46 065661 6205699 aa 20052870 910 8 820v 0 0 c2 338 K60Z 00 81 i 200 900 gt S0 0 GT O 440 NV 800 270 NIW 200 gt S0 0 02 0F0e T 11427720021 910 96 707 0F02 8T 910279207 0x 0 91 1N3N3529 ING 10 31 XVACOETOGE E No Qty P N Type 1 IC EEPROM 3 10103405 Transistor 3 Q2 04 06 Transistor Recommended Seiko Instrument 29130AF J equivalent 25 1036 ROHM equivalent F r Zener Diode RD5 1B Im Resistor R3 R4 R8 Resistor 1 8W 10KQ 5 MCR10EZHJ103 R10 R11 R13 R14 19 1 CN3 Connector SPIN 7 Resistor V na 5 MCRSUUZHUVO 5 Resistor vow ans 2 mI La RENE 1 2 452 pou PART LIST Revj 10 1 DMC Co L I 2 Specification ce
17. PROM 1 3 Indication Following are referred on this specification FIT 40 FIT 10 represents FIT 10 IC FIT 10 IF and FIT 10 IF E 1 4 Overview FIT 10 is a touch screen control device that performs an A D conversion of an analog signal of a resistive touch screen and transmits the coordinate data to the host in a 10 bit resolution serial correspondence at 9600bps FIT 10 can be used for various applications for its functions including the power saving mode seven sampling speed settings max 150p s 1 two external switch connections and automatic calibra tion data loading with an external EEPROM 2 8 FIT 10 IC An 8 bit micro controller for the analog resistive touch screen with a 10 bit A D resolu tion FIT 10 IC works with the peripheral circuits such as touch screen interface circuit RS 232C interface circuit and optional EEPROM FIT 10 IF FIT 10 IC installed analog touch screen controller board FIT 10 IF dispenses a need to newly design the peripheral circuits and can easily be used by connecting to the touch screen and the host Using the driver software 3 enables the mouse emulation on various operation systems and dispenses the need to newly design the controller software FIT 10 IF E An EEPROM installed version of FIT 10 IF The calibration data can be stored in the EEPROM and automatically read after power on 1 150 transmissions of coordinate data per second 2 EEPROM can be optionally installed on the
18. S 19 P70 Crystal Open 20 RST Reset Input 21 MODO Mode Set to VSS 22 Mode Set to VSS 23 X0 Crystal 24 X1 Crystal 25 VSS Power GND 26 P27 Open 27 P26 Open 28 P25 Open 29 P24 Open 30 P23 Open 31 P22 Open 32 P21 Open 33 P20 Open 34 P17 SW0 SWO Input H OFF L ON BIT7 1 when 1 35 P16 SW1 SW1 Input H OFF L ON BIT6 1 when ON 1 36 P15 EEPROM_SEL EEPROM Use H Yes L No 37 P14 Stabilization L Oms L H 38 P13 Time 39 12 40 11 41 10 42 7 43 P06 Open 44 P05 Open 45 4 YD Control 2 46 YU Control 1 47 2 YD Control 1 19 Rev 3 2000 2002 DMC Co Ltd Co Ltd Interface with Touch FIT 10 Series User s Guide 48 P01 XL Control 1 49 P00 XR Control 1 50 VSS Power GND 51 P37 YU Control 3 52 P36 XL Control 2 53 P35 Open 54 P34 Open 55 P33 Open 56 P32 RD Data Input 57 VCC Power 5V 58 P31 SD Data Output 59 P30 Open 60 P43 EEP_DO EEPROM DO Input 2 61 P42 EEP_DI EEPROM DI Output 2 62 P41 EEP_SK EEPROM SK Output 2 63 P40 EEP_CS EEPROM CS Output 2 64 P53 Open 1 34 and 35 should be connected to VCC 5V if SWO SW1 are not used 2 61 62 63 should be open and 60 should be connected to VCC if EEPROM is not used may cause malfunction FIT 10 IF FIT 10 IF E All the Open terminal must be open Conn
19. ata in Idling Mode Calibration Mode Calibrated coordinates are transmitted in this mode This mode can be used to adjust the touch and the cursor to absorb the electrical loss and tolerance The raw coordinate data is calibrated using the data set in Calibration Setup Mode and transmitted as calibrated coordinate This mode employs the function to limit the maximum coordinate This mode can be entered by receiving either one of DAh 2Ah 3Ah Start Calibration Mode in Idling Mode and exited to Idling Mode by receiving OBh End Calibration Mode Receiving 55h Reset switches the modes to Initialization Mode Stop Mode This mode can be entered by receiving OFh Start Stop Mode in idling Mode This mode stops the oscillation of the crystal and enables the low power consumption mode Performing hardware reset switches the modes to Initialization Mode or receiving 00h Null releases MPU stop and switches modes to Idling Mode after the stabilization time set by terminal 37 P13 and 38 P14 27ms for FIT 10 IF FIT 10 IF E Power Saving Mode Power saving is enabled when no touch is detected in 20 sampling duration in Coordinate Mode switched by receiving 01h or Calibration Mode switched by receiving OAh This mode stops the os cillation of the crystal and enables the low power consumption mode Any input or any command from the host releases this mode and switches modes to Coordinate
20. ecting those terminals to VCC VSS or other circuit CN Terminal Name Function 1 XL Touch screen Input 0 XL Open if CN2 is used CN1 2 YU Touch screen Input 1 YU Open if CN2 is used 3 XR Touch screen Input 2 XR Open if CN2 is used 4 YD Touch screen Input 3 YD Open if CN2 is used 1 YD Touch screen Input 0 YD Open if CN1 is used 2 XL Touch screen Input 1 XL Open if CN1 is used CN2 3 YU Touch screen Input 2 YU Open if CN1 is used 4 XR Touch screen Input 3 XR Open if CN1 is used 5 Open 1 Dout RS 232C Data Output 2 Din RS 232C Data Input CN3 3 GND RS 232C GND 4 Vin RS 232C Power Open if power is supplied from CN5 5 Vin RS 232C Power Open if power is supplied from CN5 1 Vin Power 5V For Voltage Monitor 2 BZ Buzzer 50ms pulse at 2 5kHz on touch CN4 3 GND Power GND 4 Swi SW1 Input H OFF L ON BIT6 1 when ON 5 SW0 SWO Input H OFF L BIT7 1 when 1 Vin Power 5V 2 Vin Power 5V 3 TTLout TTL Data Output CN5 4 TTLin TTL Data Input 5 Open 6 RST Reset Input 7 GND Power GND Open if power is supplied from CN3 8 GND Power GND Open if power is supplied from CN3 20 Rev 3 2000 2002 DMC Co Ltd DMC Co Ltd Interface with Touch FIT 10 Series User s Guide 3 2 Maximum Specification
21. ility are required such as aerospace systems vehicle operating control atomic energy controls medical devices for life support etc Any semiconductor devices have inherently a certain rate of failure The user must protect against in jury damage or loss from such failures by incorporating safety design measures into the user s facility and equipment FIT 10 Series User s Guide Rev 3 6 April 1 2002 2000 2002 Co Ltd This document can be freely distributed but any alternation to this document is prohibited 21 Co Ltd Interface with Touch DMC Co Ltd http www dmccoltd com 9 floor Kanda Sento Building 1 2 4 Yushima Bunkyo Ku Tokyo 113 0034 Japan Phone 81 3 5209 7131 Japanese 7135 English Fax 81 3 5209 7130 25 Rev 3 2000 2002 DMC Co Ltd 709 OWA 6661 0 Wa3Hdlad 01548 QN 1454 21 01 113 Nd Upwa 62 2 63 sy WISd33 us 84 2 2120 WONd 33 noo vay el 10 d33 evd AS 933 179 52 d33 0rd 4 f X as 964 SEd x nro OAS ZId TAS 91d 735 ND3d33 SId vid Eld eid Ud Old 104 908 900 S0d 27 70 12 92 Rev 3 FIT 10ZIC 1999 04 22 TERMINAL NO NAME DME 3eL IL 1 Pee 30 IL eoL IL 4 8 IL pes e7L 1 Pee 26 IL pe7 25 IL 1 vss ee m
22. ion Setup Mode 2 9 Mode Transition Example Example 1 Coordinate Mode Power on Power Saving Mode Command Initializing Mode a OBh Idling Mode 00h Sampling Rate 50p s Power Saving Mode ON FIT 10 Series User s Guide Calibration Reading Mode Host FIT 10 20 sampling Within 20 sampling Power Saving Mode Coordinate Mode Idling Mode Initializing Mode Internal Initialization 500ms Rev 3 2000 2002 DMC Co Ltd DMC Co Ltd Interface with Touch FIT 10 Series User s Guide Example 2 Coordinate Mode Sampling Rate 30p s Power Saving Mode OFF Recommended setting if power is supplied from RS 232C Host o5hj 40h 06h FIT 10 Coordinate Mode Idling Mode Initializing Mode Internal Initialization 500ms Example 3 Calibration Mode Sampling Rate 30p s Power Saving OFF Recommended setting if power is supplied from RS 232C Host FIT 10 EEPROM Data Calibration Mode Idling Mode Initializing Mode Internal Initialization 500ms 2 10 List of Command Responses Command Name Direction 05h Set Sampling Rate Host to FIT 10 01h Start Coordinate Mode 1 Host to FIT 10 21h Start Coordinate M
23. ion coordinates N Note If the input area is set smaller than the physical dimension of the touch screen following coor dinates are transmitted in the outer area Idling Mode Min Coordinates X 00 00 Y 00 00 X 00 00 1 03 00 00 00 00 00 00 Input Area X 00 00 X 03 FF Y Data Y Data X 00 00 X Data X 03 FF Y 03 FF Y 03 FF Y 03 FF data 5 Max Coordinates 03 FF Y 03 FF v Coordinate Mode _ l 4 Obtain aie v Idling Mode Input raw data i the calibration Calibration Setup Mode 4 qata and may Touch screen Calibration Data Format Number of calibration points X axis X_P Y axis Y_P Minimum 2 Maximum 5 pen hone Calibration Points M Maximum X_P Value 1 byte Y_P Value 1 byte Coordinate 8 byte byte X Raw Coordinate 2 byte 1 byte i 2 byte POM Coordinate 8 byte Y Raw Coordinate y 1 byte X Calibrati Dat 2 byte P10 Coordinate 8 byte I Y Calibration Data 2 byte P1M Coordinate 8 byte PMM Coordinate 8 byte 1 byte X Max Coordinate 2 byte 1 byte 2 Y Max Coordinate byte P01 Coordinate 10 Rev 3 2000 2002 DMC Co Ltd DAC FIT 10 Series User s Guide Example 1 Minimum point setting X_P 2 Y_P 2 X Max Coordinate Y Max Coordinate Calibration Points
24. ode 2 Host to FIT 10 31h Start Coordinate Mode 3 Host to FIT 10 02h End Coordinate Mode Host to FIT 10 ODh Start Setup Mode Host to FIT 10 1Dh Read Calibration Data Host to FIT 10 Start Calibration Mode 1 Host to FIT 10 2Ah Start Calibration Mode 2 Host to FIT 10 3Ah Start Calibration Mode 3 Host to FIT 10 OBh End Calibration Mode Host to FIT 10 OFh Start Stop Mode Host to FIT 10 00h Null Host to FIT 10 55h Reset Host to FIT 10 10h Pen up ID FIT 10 to Host 11h Pen down ID FIT 10 to Host 06h ACK FIT 10 to Host 15h NAK FIT 10 to Host M Y H aed 18 Rev 3 2000 2002 DMC Co Ltd Co Ltd Interface with Touch FIT 10 Series User s Guide 3 Data Sheet 3 1 Terminal Function 8 FIT 10 IC Terminal Name Function 1 P52 Open 2 P51 Buzzer Output N ch Open drain Output 3 P50 Open 4 P60 ANO A D Converter Input 0 to XR 5 P61 AN1 A D Converter Input 1 to XL 6 P62 AN2 A D Converter Input 2 to YD 7 P63 AN3 A D Converter Input 3 to YU 8 P64 Open 9 P65 Open 10 P66 Open 11 P67 Open 12 AVCC A D Converter Power to VCC 13 AVR A D Converter Reference Power to AVCC 14 AVSS A D Converter VSS to VSS 15 P74 Open 16 P73 RD Input 17 P72 YU Input 18 P71 Crystal to VS
25. pOftSes cce tre pete eset do ci qa Re kg Die ext chants cede 17 5 etre C DARE UE DER DRIFT PONDUS 18 5 8 222 2 22 22 22 2 2551 22 52252 22225112 1522 2222222 121234242424 52 211 2221112 19 Function 2 2 2 2 22 42 422424252241 42 4 24442 2 2 240 42240 442 212 2 012488242 4 1 diden kiana 19 Absolute Maximum Ratings aaiae Eei 21 Recommendable Op Conditions u 21 Alternative Current Rates 22 Direct Current eee erret qe eee ere pe egeo 23 Changes amp Improvemoents J J J J 24 MEME 24 Precaution Tor Use aie A ee eel 25 General ed eer ea nv e Re ee tees 25 Giao OMNI HERE UE UE 25 1 Rev 3 2000 2002 DMC Ltd DMC Co Ltd Interface with Touch FIT 10 Series User s Guide 1 Product Overview 1 1 Products Applicable This specification is applicable to FIT 10 IC FIT 10 IF and FIT 10 IF E 1 2 Product Names Product Name Description FIT 10 IC Analog resistive touch screen micro controller FIT 10 IF FIT 10 IC installed touch screen controller board FIT 10 IF E FIT 10 IC installed touch screen controller board with EE
26. peripheral circuits of FIT 10 IC Not applicable to FIT 10 IF 3 Please contact the local sales representatives for software availability 2 Rev 3 2000 2002 DMC Co Ltd Co Ltd FIT 10 Series User s Guide Interface with Touch 1 5 Features Two output modes Coordinate Mode transmits the raw coordinate data in 10 bit and Calibration Mode transmits the coordinate data that is being calibrated to the display coordinates The calibration data can be stored in the optional EEPROM and automatically read at power on The data remains in the EEPROM after power off Calibration Mode can be used on FIT 10 IF by setting the calibration data at Calibration Setup Mode at every power on Two external switch information can be transmitted with the coordinate data External circuits can be monitored The touch signal can be externally transmitted This signal can be used to have buzzer or LED for touch recognition or to control the external equipment Power Saving Mode is available for the low power consumption requirement When no input is de tected the mode is automatically switched to Power Saving Mode Seven sampling modes including point mode can optimize the best sampling speed for various appli cations Power can be supplied from RS 232C line FIT 10 IF FIT 10 IF E 1 6 General Specifications
27. r a pen leaves the touch screen Point Mode excluded Correspondence and Mode Transition Host FIT 10 Coordinate Mode Idling Mode Start amp End Coordinate Mode Command 1 byte Mode Command Function Coordinate data is transmitted according to the sampling rate setting and one pen up ID is transmitted when touch is terminated No input for 20 sampling duration enables Power Saving Mode Pen up IDs are transmitted according to the sampling rate Start Coordinate Data 2 21h setting and the coordinate data is transmitted when touch is detected Power Saving Mode is disabled Coordinate data is transmitted according to the sampling Start Coordinate Data 3 31h rate setting and one pen up ID is transmitted when touch is terminated Power Saving Mode is disabled Exits Coordinate Mode and returns to Idling Mode Ap plicable to 1 3 Start Coordinate Data 1 01h End Coordinate Data 02h Power Saving Mode Power Saving Mode is enabled when no touch is detected in 20 sampling duration in Coordinate Mode switched by receiving 01h This mode stops the oscillation of the crystal and enables the low power consumption mode Any input or any command from the host releases this mode and switches modes to Idling Mode after the stabilization time set by terminal 37 P13 and 38 P14 27ms for FIT 10 IF FIT 10 IF E In order to receive 02h Power Saving Mode m
28. r cannot be mounted on CN2 1 Y HP d 24 Rev 3 2000 2002 DMC Co Ltd DMC co Ltd Interface with n FIT 10 Series User s Guide 5 Precautions for Use 5 1 General Handling Keep the product away from any conductive objects while in use Do not touch the conductive part of the product to avoid being damaged by the electrostatic discharge Follow the proper procedure for handling Keep the product in the proper storing environment and avoid any load to the product Do not use or store the product in the severe condition like following Wet environment or a condition where the product is likely to get wet Where dew condensation is likely to occur Near solvent or acid Do not take apart or alter the product 5 2 Others 8 contents of this document are subject to change without notice The manufacturer or sales representatives will not be liable for any damages or loss arising from use of this product This product is intended for use in standard applications computers office automation and other office equipment industrial communications and measurement equipment personal and household devices etc Please avoid using this product for special applications where failure or abnormal operation may directly affect human lives or cause physical injury or property damage or where extremely high levels of reliab
29. rt Setup Mode in Idling Mode and exited to Idling FIT 10 Series User s Guide Mode with returning 06h 15h ACK NAK when the setup is completed The data can be stored in this mode if EEPROM is installed Correspondence and Mode Transition Host FIT 10 Calibration Setup Mode Idling Mode Start Setup Mode Command 1byte ODh OEh Setup Points Coordinates Response with no EEPROM Mode Command Function Start Setup Mode 1 Regular calibration setting Start Setup Mode 2 OEh 5 point calibration setting Condition Response Format Description OK 06h ACK 1 byte Setup completed Response with EEPROM installed Condition Response Format Description OK 06h 1 byte EEPROM writing successful 15 NAK _ EE bito 1 01h No Data EEPROM _____ NGC Wine 11 1 020 gt pyte EEPROM data error 0 0 bit2 1 04h EEPROM writing error bit3 1 08h Touch screen not connected Rev 3 2000 2002 DMC Co Ltd Co Ltd m Interface with Touch FIT 10 Series User s Guide Setup Procedure Fix the calibration points and numbers and display the points by an object such as a cross mark or an arrow Obtain the raw coordinate data in Coordinate Data Mode Send ODh OEh from the host to switch to Calibration Setup Mode and input the calibrat
30. the electrodes of the X resistive layer of the touch screen and the other is needed to be grounded When the touch screen is depressed the resistive conductive coating of the X resistive layer contacts the one of the Y resistive layer and the volt age of the X layer at the contact point x is measured on the Y resistive layer A_ n This voltage is measured higher on the power source side and results lower on the grounded side This results A_ n VCC at E point and A_ n OV at A point FIT 10 IC computes the coordinate data from A_ n and transmits the data to the host through RS 232C interface The coordinate of Y resistive layer is measured in the same way and alternating these two resolves the touch position of the touch screen Example of the relationship between the input points and the output data Electrical loss or tolerance of FIT 10 touch screen and cables are excl uded VCC VCC 5 0V 7 X resistive layer reverse side 7 un xl A in Output Data Touch 4 X electrode 1 xl A ov 0000h side 2 Y resistive layer B 1 25V OOFFh S elacirdds C 2 5V 01FFh D 3 75V 02FFh A in E 5V O3FFh Max FIT 10IF FIT 10 IF E Touch Screen X resistive layer Y resistive layer P P 4 Rev 3 2000 2002 DMC Co Ltd FIT 10 IC e ei
31. ust be exited A command or a touch must be trans mitted to exit Power Saving Mode and 02h must be followed before 20 sampling duration elapses Host FIT 10 Idling Mode Coordinate Mode I T Power Saving Mode lt 4 20 Sampling Stabilization 20 Sampling 7 Rev 3 2000 2002 DMC Ltd 21 Co Ltd Interface with Touch Data Details FIT 10 Series User s Guide Pen down ID Pen up ID Bit Order 7 6 5 4 3 2 1 0 Bit Order 7 6 5 4 3 2 1 0 Data SWOSW10 1 0 0 O 1 Data SWOSW10 1 0 0 0 0 Pen down ID Pen up ID ID SW0 SW1 ID SW0 SW1 11h 0 0 10h 0 0 51h 0 1 50h 0 1 91h 1 0 90h 1 0 Dih 1 1 DOh 1 1 Data Example Started by receiving 01h or 31h in the case of X 0374 01A9 Touch on t Touch off Oth Bit Order 7 0 6 5 4 3 Data 0000 2 1 0 0 Bit Order Data 7 6 5 1 0 4 3 1 0 1 Data Example Transmitted by receiving 21h t Touch off Touch on ae 8 Rev 3 2000 2002 DMC Co Ltd Co Ltd Interface with Touch 2 4 Calibration Data Setup Mode The calibration data used in Calibration Mode is setup in this mode Raw coordinate data of the calibra tion points is needed to setup This mode can be entered by receiving ODh OEh Sta

Analog Resistive Touch Screen Controller FIT

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