IC TOUCH SCREEN CTLR 12-WLP

MAX11800EWC+T

Manufacturer Part NumberMAX11800EWC+T
DescriptionIC TOUCH SCREEN CTLR 12-WLP
ManufacturerMaxim Integrated Products
TypeResistive
MAX11800EWC+T datasheet
 


Specifications of MAX11800EWC+T

Touch Panel Interface4-WireNumber Of Inputs/keys1 TSC
Resolution (bits)12 bData InterfaceSerial, SPI™
Data Rate/sampling Rate (sps, Bps)105kVoltage - Supply1.7 V ~ 3.6 V
Operating Temperature-40°C ~ 85°CMounting TypeSurface Mount
Package / Case12-WLPVoltage Supply SourceSingle Supply
Sampling Rate (per Second)105kResolution11 bits
Interface TypeI2C, SPISupply Voltage (max)3.6 V
Supply Voltage (min)1.7 VConversion Rate34.4 KSPs
Maximum Operating Temperature+ 85 CMinimum Operating Temperature- 40 C
Mounting StyleSMD/SMTLead Free Status / RoHS StatusLead free / RoHS Compliant
Other namesMAX11800EWC+T
MAX11800EWC+TTR
  
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19-4711; Rev 3; 10/10
Touch-Screen Controllers with I
General Description
The MAX11800–MAX11803 low-power touch-screen con-
trollers operate from a single supply of 1.70V to 3.6V, tar-
geting power-sensitive applications such as handheld
equipment. The devices contain a 12-bit SAR ADC and a
multiplexer to interface with a resistive touch-screen
panel. A digital serial interface provides communications.
The MAX11800–MAX11803 include digital preprocessing
of the touch-screen measurements, reducing bus loading
and application-processor resource requirements. The
included smart interrupt function generator greatly
reduces the frequency of interrupt servicing to the
devices. The MAX11800–MAX11803 enter low-power
modes automatically between conversions to save power,
making the devices ideal for portable applications.
The MAX11800/MAX11801 offer two modes of operation:
direct and autonomous. Direct mode allows the applica-
tion processor to control all touch-screen controller activ-
ity. Autonomous mode allows the MAX11800/MAX11801
to control touch-screen activity, thereby freeing the
application processor to perform other functions. In
autonomous mode, the devices periodically scan the
touch screen for touch events without requiring host-
processor intervention. This can be used to reduce sys-
tem power consumption. An on-chip FIFO is used during
autonomous mode to store results, increasing effective
data throughput and lower system power.
The MAX11800–MAX11803 support data-tagging,
which records the type of measurement performed; X,
Y, Z1, or Z2, and the type of touch event; initial touch,
continuing touch, or touch release.
The MAX11800/MAX11802 support the SPI™ serial bus.
The MAX11801/MAX11803 support the I
The MAX11800–MAX11803 are available in 12-pin TQFN
and 12-pin WLP packages, and are specified over the
-40°C to +85°C (extended) and -40°C to +105°C (auto-
motive) temperature ranges.
Mobile Communication
POS Terminals
Devices
Handheld Games
PDAs, GPS Receivers,
Automotive Center
Personal Navigation
Consoles
Devices, Media Players
Portable Instruments
Typical Operating Circuits and Pin Configurations appear
at end of data sheet.
SPI is a trademark of Motorola, Inc.
________________________________________________________________ Maxim Integrated Products
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
Low-Power, Ultra-Small Resistive
♦ 4-Wire Touch-Screen Interface
♦ X/Y Coordinate and Touch Pressure Measurement
♦ Ratiometric Measurement
♦ 12-Bit SAR ADC
♦ Single 1.7V to 3.6V Supply
♦ Two Operating Modes—Direct and Autonomous
♦ Data Tagging Provides Measurement and Touch
Event Information
♦ Data Filtering Provides Noise Reduction
♦ Aperture Mode Provides Spatial Filtering
♦ Digital Processing Reduces Bus Activity and
Interrupt Generation
♦ Programmable Touch-Detect Pullup Resistors
♦ Auto Power-Down Control for Low-Power
Operation
♦ 25MHz SPI Interface (MAX11800/MAX11802)
♦ 400kHz I
♦ 1.6mm x 2.1mm, 12-Pin WLP and 4mm x 4mm,
12-Pin TQFN
♦ Low-Power Operation
343µW at V
888µW at V
♦ ESD Protection
±4kV HBM
±8kV HBM (X+, X-, Y+, Y-)
±1kV CDM
±200V MM
2
C serial bus.
PART
MAX11800ETC+
MAX11800GTC/V+
Applications
MAX11800EWC+T
MAX11801ETC+
MAX11801GTC/V+
MAX11801EWC+T
MAX11802ETC+
MAX11802EWC+T
MAX11803ETC+
MAX11803EWC+T
+ Denotes a lead(Pb)-free/RoHS-compliant package.
/V denotes an automotive qualified part.
T = Tape and reel.
* EP = Exposed pad.
2
C/SPI Interface
Features
2
C Interface (MAX11801/MAX11803)
= 1.7V, 34.4ksps
DD
= 3.3V, 34.4ksps
DD
Ordering Information
TEMP RANGE
PIN-PACKAGE
-40°C to +85°C
12 TQFN-EP*
-40°C to +105°C
12 TQFN-EP*
-40°C to +85°C
12 WLP
-40°C to +85°C
12 TQFN-EP*
-40°C to +105°C
12 TQFN-EP*
-40°C to +85°C
12 WLP
-40°C to +85°C
12 TQFN-EP*
-40°C to +85°C
12 WLP
-40°C to +85°C
12 TQFN-EP*
-40°C to +85°C
12 WLP
1

MAX11800EWC+T Summary of contents

  • Page 1

    ... V ♦ ESD Protection ±4kV HBM ±8kV HBM (X+, X-, Y+, Y-) ±1kV CDM ±200V serial bus. PART MAX11800ETC+ MAX11800GTC/V+ Applications MAX11800EWC+T MAX11801ETC+ MAX11801GTC/V+ MAX11801EWC+T MAX11802ETC+ MAX11802EWC+T MAX11803ETC+ MAX11803EWC+T + Denotes a lead(Pb)-free/RoHS-compliant package. /V denotes an automotive qualified part Tape and reel Exposed pad. ...

  • Page 2

    Low-Power, Ultra-Small Resistive Touch-Screen Controllers with I Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

  • Page 3

    Low-Power, Ultra-Small Resistive Touch-Screen TABLE OF CONTENTS (continued) Examples of Using Aperture Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

  • Page 4

    Low-Power, Ultra-Small Resistive Touch-Screen Controllers with I 2 Figure Timing Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . ...

  • Page 5

    Low-Power, Ultra-Small Resistive Touch-Screen Table 1. Terminology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

  • Page 6

    Low-Power, Ultra-Small Resistive Touch-Screen Controllers with I Table 1. Terminology TERM Panel, Resistive Touch Sensor: Panel, or touch screen, or touch panel are used interchangeably to denote the Touch Screen, resistive touch sensor. Touch Panel Touch-Screen Controller: Devices attached to ...

  • Page 7

    Low-Power, Ultra-Small Resistive Touch-Screen Table 1. Terminology (continued) TERM First-In First-Out Memory: The MAX11800–MAX11803 contain a 1024-bit FIFO that is used to store conversion FIFO results when operating in autonomous conversion mode. FIFO depth indicates the number of words (16-bit ...

  • Page 8

    Low-Power, Ultra-Small Resistive Touch-Screen Controllers with I ABSOLUTE MAXIMUM RATINGS V to GND ...........................................................-0.3V to +4.0V DD X+, X-, Y+, Y-, AUX, TIRQ to GND ........................-0.3V to +4.0V SCL, CLK, SDA, DIN, A0, CS, A1, DOUT to GND.-0.3V to +4.0V ...

  • Page 9

    Low-Power, Ultra-Small Resistive Touch-Screen ELECTRICAL CHARACTERISTICS (continued 1.7V to 3.6V -40°C to +85°C (MAX11800E–MAX11803E erwise noted. Typical values are +25°C and V A PARAMETER SYMBOL DIGITAL INPUTS (SDA, DIN, SCL, ...

  • Page 10

    Low-Power, Ultra-Small Resistive Touch-Screen Controllers with I SPI TIMING CHARACTERISTICS (V = 1.7V to 3.6V -40°C to +85°C (MAX11800E and MAX11802E noted. Typical values are +25°C and V A PARAMETER SYMBOL CLK ...

  • Page 11

    Low-Power, Ultra-Small Resistive Touch-Screen CSH0 CSS0 CS CLK 1 0 DIN HIGH-Z DOUT SPI WRITE OPERATION CSS0 CS t CLK 1 DIN ...

  • Page 12

    Low-Power, Ultra-Small Resistive Touch-Screen Controllers with 1. -40°C to +85° noncontinuous AUX input. SPI = 10MHz and 371Ω).) AVERAGE SUPPLY CURRENT vs. SAMPLING RATE 90 AUTONOMOUS ...

  • Page 13

    Low-Power, Ultra-Small Resistive Touch-Screen ( -40°C to +85° noncontinuous AUX input. SPI = 10MHz and 371Ω).) AVERAGE SUPPLY CURRENT vs. SAMPLING RATE 3.0 DIRECT CONVERSION MODE—AUXILIARY ...

  • Page 14

    Low-Power, Ultra-Small Resistive Touch-Screen Controllers with I PIN MAX11800/MAX11802 MAX11801/MAX11803 TQFN-EP WLP TQFN- — — — ...

  • Page 15

    Low-Power, Ultra-Small Resistive Touch-Screen Controllers with I AUX X+ X- TOUCH- Y+ SCREEN Y- INTERFACE AUX TOUCH- SCREEN Y- INTERFACE ______________________________________________________________________________________ MAX11800/MAX11801 MUX SAR ADC LOGIC CORE INTERNAL V DD CLOCK INTERRUPT GENERATION ENGINE GND MAX11802/MAX11803 MUX ...

  • Page 16

    Low-Power, Ultra-Small Resistive Touch-Screen Controllers with I Detailed Description The MAX11800–MAX11803 contain standard features found in a typical resistive touch-screen controller as well as advanced features found only on Maxim touch- screen controllers. Standard features included in the MAX11800–MAX11803 are: ...

  • Page 17

    Low-Power, Ultra-Small Resistive Touch-Screen DIRECT CONVERSION MODE CONFIGURATION REGISTER 0x0B BITS[6: CONFIGURATION SETUP, MEASUREMENTS, REGISTERS AND READBACK COMMANDS PANEL TIMING PANEL SETUP 0x05 0x69–0x6F COMBINED MEASUREMENT N/A MEASUREMENT: 0x70–0x75 DATA READBACK: 0x52–0x59 PANEL MEASUREMENT N/A MEASUREMENT: 0x78–0x7F DATA ...

  • Page 18

    Low-Power, Ultra-Small Resistive Touch-Screen Controllers with I CONFIGURATION REGISTERS PANEL TIMING AVERAGING METHOD 0x03, 0x0B EDGE INTERRUPT MODE CONTINUOUS INTERRUPT MODE EVENT TAG (ETAG) (FIFO NOT USED) MEASUREMENT TAG (MTAG) (FIFO NOT USED) ADC RESOLUTION AND TIMING 0x02, 0x04, 0x06 ...

  • Page 19

    Low-Power, Ultra-Small Resistive Touch-Screen Table 2. Operating Modes, Conditions, and Options OPERATION PSU PMC CMC TDM LPM AVG FIFO APER MODE DCM MAX11800– Yes Yes Yes Yes MAX11803 ACM MAX11800/ Yes Yes Yes Yes MAX11801 3 AUX ...

  • Page 20

    Low-Power, Ultra-Small Resistive Touch-Screen Controllers with I power dissipation condition is observed when the point of contact is in the top left corner of the panel sensor. The planar end-to-end resistance included in the cur- rent path is minimal at ...

  • Page 21

    Low-Power, Ultra-Small Resistive Touch-Screen the timing of the decision are configurable through the touch-detect pullup timing configuration register (0x07). Program the MAX11800–MAX11803 in the context of the application to maximize power efficiency and achieve the desired scan throughput. PUR is ...

  • Page 22

    Low-Power, Ultra-Small Resistive Touch-Screen Controllers with I FAST PULLUP TOUCH DETECTION DIGITAL WAVEFORM SCAN MODE MEASUREMENT COMPLETE— POWER ASSISTED PULLUP PERIOD (10Ω) DATA IS KNOWN ANALOG WAVEFORM V DD INITIAL INPUT VOLTAGE DETERMINED BY LAST SCAN ACTIVITY NORMAL TOUCH DETECTION ...

  • Page 23

    Low-Power, Ultra-Small Resistive Touch-Screen Combined Commands Combined commands reduce AP interaction with the MAX11800–MAX11803 by allowing multiple measure- ments. For example, the MAX11800–MAX11803 can be instructed to provide X and Y data and Y and Z1 data, or ...

  • Page 24

    Low-Power, Ultra-Small Resistive Touch-Screen Controllers with I Features Available in the MAX11800/MAX11801 Only Autonomous Mode The MAX11800/MAX11801 can perform measurements automatically without the AP involvement, and is referred to as autonomous conversion mode (ACM). When operating in ACM, the MAX11800/MAX11801 ...

  • Page 25

    Low-Power, Ultra-Small Resistive Touch-Screen SETUP NO X COMMAND PANEL SETUP NO Y COMMAND PANEL SETUP NO Z COMMAND PANEL AVERAGE CONVERSION USER COMMAND INTERNAL TRANSITION Figure 8. State Machine Transitions (Direct Conversion Mode)—MAX11800–MAX11803 Table 6. Measurement and Event Tags (Continuous ...

  • Page 26

    Low-Power, Ultra-Small Resistive Touch-Screen Controllers with I BEGINNING OF TOUCH EVENT PANEL TOUCH TIRQ TDM READBACK OPERATIONS ARE NOT SHOWN, BUT ARE EXECUTED DURING TDM PERIODS. SCAN INTERVAL ( CONTROLLED BY THE AP AND THE INITIATION OF DM ...

  • Page 27

    Low-Power, Ultra-Small Resistive Touch-Screen BEGINNING OF TOUCH EVENT PANEL TOUCH t TIRQ IRQ TDM READBACK OPERATIONS ARE NOT SHOWN, BUT ARE EXECUTED DURING TDM PERIODS. TIRQ DURATION ( SPECIFIED BY THE GENERAL CONFIGURATION REGISTER (0x01). IRQ SCAN INTERVAL ...

  • Page 28

    Low-Power, Ultra-Small Resistive Touch-Screen Controllers with I Table 9. Panel Measurement Command Summary HEX ACCESS PAIRABLE 0x70h Write 0x72h Write 0x74h Write 0x76h Write 0x78h Write 0x79h Write 0x7Ah Write 0x7Bh Write 0x7Ch Write 0x7Dh Write 0x7Eh Write 0x7Fh Write ...

  • Page 29

    Low-Power, Ultra-Small Resistive Touch-Screen PANEL SETUP COMMANDS (DIRECT CONVERSION ONLY) PANEL SETUP (PSU) FOR DRIVE MEASUREMENT COMMANDS (DIRECT CONVERSION ONLY) SINGLE CONVERSION WITH CONT = 1 SETUP ADC ADC ( CONVERSION ACQUISITION PSU ...

  • Page 30

    Low-Power, Ultra-Small Resistive Touch-Screen Controllers with I X AND Y COMMANDS SINGLE CONVERSIONS PSU ACQ CONV PSU AVERAGED CONVERSIONS PSU ACQ CONV PSU N AVGX X, Y, AND Z1 COMMANDS SINGLE CONVERSIONS ...

  • Page 31

    Low-Power, Ultra-Small Resistive Touch-Screen Autonomous Conversion Mode The MAX11800/MAX11801 perform measurements automatically and inform the AP when they are com- plete in autonomous conversion mode, reducing data X PSU X MEAS NO YES X AVG DONE POWER-DOWN ACM REQUEST PUR ...

  • Page 32

    Low-Power, Ultra-Small Resistive Touch-Screen Controllers with I Measurement Operations In autonomous conversion, the MAX11800/MAX11801 idle in TDM until a touch event occurs. The MAX11800/MAX11801 begin an automated sequence of measurements as defined by the configuration regis- ter 0x08h. The MAX11800/MAX11801 ...

  • Page 33

    Low-Power, Ultra-Small Resistive Touch-Screen Delayed Touch Detection During Mode Transitions The MAX11800/MAX11801 support a low-power power- down mode suspending all touch-screen activity and the panel is not driven. In this mode, the MAX11800/MAX11801 is unable to detect a touch. When ...

  • Page 34

    Low-Power, Ultra-Small Resistive Touch-Screen Controllers with I FIFO Data Word Structure Table 11 shows a 16-bit data word (MSB byte + LSB byte). Each data word consists of 12 bits of position data, mapped to locations [15:4]. Eight-bit measure- ment ...

  • Page 35

    Low-Power, Ultra-Small Resistive Touch-Screen For example: -1 0000 = 2 LSB = aperture checking disabled (1-1) 0001 = 2 LSB = ±1 LSB (2-1) 0010 = 2 LSB = ±2 LSB (3-1) 0011 = 2 LSB = ±4 LSB … ...

  • Page 36

    Low-Power, Ultra-Small Resistive Touch-Screen Controllers with I When the MAX11800/MAX11801 operate in autonomous conversion mode with low or no aperture ranges, the FIFO and interrupt activity occur frequently with the AP servicing the devices frequently to avoid loss of data ...

  • Page 37

    Low-Power, Ultra-Small Resistive Touch-Screen The second waveform shows an interrupt operation assuming that aperture mode is disabled (or that ΔX = Δ LSB), assuming that the AP service interrupts at a frequency faster than the selected TSC sample ...

  • Page 38

    Low-Power, Ultra-Small Resistive Touch-Screen Controllers with I SPI Communication Sequence (MAX11800/MAX11802) The SPI interface consists of three inputs, DIN, DCLK, CS, and one output, DOUT. A logic-high on CS dis- ables the MAX11800/MAX11802 digital interface and places DOUT in a ...

  • Page 39

    Low-Power, Ultra-Small Resistive Touch-Screen SPI Configuration or Result Register Read (MAX11800/MAX11802) Figure 19 shows the read operation sequence for the MAX11800/MAX11802. A single configuration register can be read back in a 2-byte operation, composed of a requested register address (A[6:0], ...

  • Page 40

    Low-Power, Ultra-Small Resistive Touch-Screen Controllers with SCLK A [6:0] DIN i DOUT Figure 20. SPI Multiple-Byte Register Read Sequence—MAX11800/MAX11802 CS SCLK DIN Figure 21. SPI Conversion Command—MAX11800/MAX11802 SPI Conversion Command (MAX11800/MAX11802) The sequence in Figures 20 and ...

  • Page 41

    Low-Power, Ultra-Small Resistive Touch-Screen t F SDA LOW SCL t HD;STA t HD;DAT S Figure 22. 2-Wire Interface Timing Diagram S Sr SCL SDA Figure 23. START, STOP, and Repeated START Conditions on SDA with SCL high. ...

  • Page 42

    Low-Power, Ultra-Small Resistive Touch-Screen Controllers with I master-generated 9th clock pulse if the previous byte is successfully received. Monitoring ACK allows for detec- tion of unsuccessful data transfers. An unsuccessful data transfer occurs if a receiving device is busy or ...

  • Page 43

    Low-Power, Ultra-Small Resistive Touch-Screen Read Data Format Send the slave address with the R/W bit set initi- ate a read operation. The MAX11801/MAX11803 acknowledge receipt of its slave address by pulling SDA low during the 9th SCL ...

  • Page 44

    Low-Power, Ultra-Small Resistive Touch-Screen Controllers with I reading one byte from the MAX11801/MAX11803. Figure 28 illustrates the frame format for reading multi- ple bytes from the MAX11801/MAX11803. As previously indicated, the MAX11801/MAX11803 read sequence does not limit how many bytes ...

  • Page 45

    Low-Power, Ultra-Small Resistive Touch-Screen BYTE 1: DEVICE ADDRESS START SDA 1 0 SCL 2 Figure 30 Conversion and Measurement Commands Direct Conversion Read Operations All direct conversion commands automatically set the readback target register, streamlining data gathering operations. ...

  • Page 46

    Low-Power, Ultra-Small Resistive Touch-Screen Controllers with I Table 16. SPI Command and Data Format: 8 Bits BIT 7 BIT 6 BIT Table 17 Command and Data Format: 8 Bits Plus ACK BIT 7 BIT ...

  • Page 47

    Low-Power, Ultra-Small Resistive Touch-Screen Table 18. Status and Configuration Registers HEX ACCESS PAIRABLE (NOTE 1) 00h R No 01h R/W Yes 02h R/W Yes 03h R/W Yes 04h R/W Yes 05h R/W Yes 06h R/W Yes 07h R/W Yes 08h ...

  • Page 48

    Low-Power, Ultra-Small Resistive Touch-Screen Controllers with I Table 20. Conversion Command Summary R0 HEX (CONT) ACCESS PAIRABLE (NOTE 1) (NOTE 2) 60h–67h X — 69h (1) W 6Bh (1) W 6Dh (1) W 6Fh (1) W 70h (0) W 72h ...

  • Page 49

    Low-Power, Ultra-Small Resistive Touch-Screen Table 21. Measurement Commands HEX ACCESS PAIRABLE 0x70h Write 0x72h Write 0x74h Write 0x76h Write 0x78h Write 0x79h Write 0x7Ah Write 0x7Bh Write 0x7Ch Write 0x7Dh Write 0x7Eh Write 0x7Fh Write General Status Register (0x00) (Read ...

  • Page 50

    Low-Power, Ultra-Small Resistive Touch-Screen Controllers with I General Configuration Register (0x01) BIT 7 6 NAME RT_SEL HOLD_DO DEFAULT 1 1 BIT NAME 0: 50k touch-detection pullup resistance 7 RT_SEL 1: 100k touch-detection pullup resistance (panel setting—not to be confused with ...

  • Page 51

    Low-Power, Ultra-Small Resistive Touch-Screen Measurement Averaging Configuration Register (0x03)* BIT 7 6 NAME AVG_X[1:0] DEFAULT 0 0 BIT NAME Averaging sample depth for measurements 7:6 AVG_X[1:0] If AVG_FLT = 0 (see the Operating Mode Configuration ...

  • Page 52

    Low-Power, Ultra-Small Resistive Touch-Screen Controllers with I Panel Setup Timing Configuration Register (0x05) BIT 7 6 NAME PSUXY[3:0] DEFAULT 0 0 BIT NAME X, Y panel setup times (position measurements) 0000: 0μs 0001: 20μs 0010: 50μs 7:4 PSUXY[3:0] 0011: 80μs ...

  • Page 53

    Low-Power, Ultra-Small Resistive Touch-Screen Touch-Detect Pullup Timing Configuration Register (0x07) BIT 7 6 NAME 0 0 DEFAULT BIT NAME Rough pullup time (t 0000: 2μs* 0001: 2μs 0010: 4μs 7:4 PUR[3:0] 0011: 8μs 0100: 10μs 0101: 50μs 0110: 100μs 0111: ...

  • Page 54

    Low-Power, Ultra-Small Resistive Touch-Screen Controllers with I Autonomous Mode Timing Configuration Register (0x08) BIT 7 6 NAME DEFAULT 0 0 BIT NAME Initial period (time between touch and initial scan block, t 0000: 10μs 0001: 20μs 0010: 50μs 7:4 TINIT[3:0] ...

  • Page 55

    Low-Power, Ultra-Small Resistive Touch-Screen Auxiliary Measurement Configuration Register (0x0A) BIT 7 6 NAME D_CV_A[3:0] DEFAULT 0 0 BIT NAME Delay initial auxiliary conversion 000: 10μs 001: 100μs 010: 500μs 7:5 D_CV_A[3:0] 011: 1ms 100: 5ms 101: 10ms 110: 50ms 111: ...

  • Page 56

    Low-Power, Ultra-Small Resistive Touch-Screen Controllers with I Operating Mode Configuration Register (0x0B) BIT 7 6 NAME PWRDN AMODE[1:0] DEFAULT 1 0 BIT NAME 0: Device is powered up and operational in either a direct or 7 PWRDN autonomous conversion mode ...

  • Page 57

    Low-Power, Ultra-Small Resistive Touch-Screen Controllers with I TOUCH SCREEN TOUCH SCREEN ______________________________________________________________________________________ MAX11800/MAX11802 Typical Operating Circuit V DD 0.1μ TIRQ Y+ DIN MAX11800 MAX11802 CLK X- DOUT CS Y- AUX INPUT AUX GND MAX11801/MAX11803 Typical Operating Circuit ...

  • Page 58

    Low-Power, Ultra-Small Resistive Touch-Screen Controllers with I TOP VIEW CS CLK 9 8 DOUT 10 11 AUX MAX11800 MAX11802 TQFN A0 SCL AUX MAX11801 MAX11803 12 Y+ ...

  • Page 59

    ... 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 ____________________ 59 © 2010 Maxim Integrated Products ...