MXB7843EEE+ Maxim Integrated Products, MXB7843EEE+ Datasheet
MXB7843EEE+
Specifications of MXB7843EEE+
Related parts for MXB7843EEE+
MXB7843EEE+ Summary of contents
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... Typical Application Circuit appears at end of data sheet. TransZorb is a trademark of Vishay Intertechnology, Inc. SPI/QSPI are trademarks of Motorola, Inc. ________________________________________________________________ Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. ♦ ESD-Protected ADC Inputs ± ...
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Touch-Screen Controller ABSOLUTE MAXIMUM RATINGS CS, DCLK to GND ...................................-0. DIN, DD Digital Outputs to GND...............................-0. X+, X-, Y+, Y-, IN3, IN4 to GND........-0. REF Maximum ...
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Touch-Screen ELECTRICAL CHARACTERISTICS (continued 2.7V to 3.6V 2.5V REF DCLK unless otherwise noted. Typical values are at T MIN MAX PARAMETER SYM REFERENCE ...
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Touch-Screen Controller TIMING CHARACTERISTICS (Figure 2.7V to 3.6V 2.5V REF DCLK unless otherwise noted. Typical values are at T MIN MAX PARAMETER SYM B O ...
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Touch-Screen (V = 2.7V 2.5V 2MHz REF DCLK noted.) INTEGRAL NONLINEARITY vs. DIGITAL OUTPUT CODE 0.5 0.4 0.3 0.2 0.1 0 -0.1 -0.2 -0.3 -0.4 0 500 1000 1500 2000 ...
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Touch-Screen Controller (V = 2.7V 2.5V 2MHz REF DCLK noted.) REFERENCE CURRENT vs. SUPPLY VOLTAGE 8 0.1µ 125kHz SAMPLE 8.2 8.1 8.0 7.9 7.8 7.7 ...
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Touch-Screen PIN NAME 1 V Positive Supply Voltage. Connect to pin 10 Position Input, ADC Input Channel Position Input, ADC Input Channel Position Input ...
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Touch-Screen Controller Detailed Description The MXB7843 uses a successive-approximation conver- sion technique to convert analog signals to a 12-bit digital output. An SPI/QSPI/MICROWIRE™-compatible serial interface provides an easy communication to a micro- processor (µP). It features ...
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Touch-Screen IN3 IN4 REF Table 1. Input Configuration, Single-Ended Reference Mode (SER/DFR HIGH MEASUREMENT ...
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Touch-Screen Controller Analog Input Protection Internal protection diodes, which clamp the analog input to V and GND, allow the analog input pins to DD swing from GND - 0. 0.3V without damage. DD ...
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Touch-Screen IN3 IN4 GND Figure 2. Equivalent Input Circuit GND Figure 3. Single-Ended Y-Coordinate Measurement ______________________________________________________________________________________ PENIRQ V REF DD A2–A0 (SHOWN 001 ) B SER/DFR (SHOWN ...
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Touch-Screen Controller TOUCH SCREEN PENIRQ Functional Block Diagram Figure 5. SCREEN TOUCHED HERE PENIRQ CS DCLK DIN INTERRUPT PROCESSOR NO RESPONSE TO TOUCHMASK PENIRQ t TOUCH Figure 6. PENIRQ ...
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Touch-Screen Initialization After Power-Up and Starting a The digital interface consists of three inputs, DIN, DCLK, CS, and one output, DOUT. A logic-high on CS disables the MXB7843 digital interface and places DOUT in a high-impedance ...
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Touch-Screen Controller ACQ DCLK 1 4 SER/ DIN MODE PD1 DFR IDLE ACQUIRE (START) BUSY RB1 DOUT A/D STATE IDLE ACQUIRE DRIVERS1 AND 2 (SER/DFR HIGH) OFF DRIVERS1 AND ...
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Touch-Screen DCLK DIN S CONTROL BYTE 0 DOUT BUSY Figure 9. 16-Clock/Conversion Timing Table 3. Control Byte Format BIT 7 BIT 6 BIT 5 START A2 A1 BIT NAME 7 START Start bit ...
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Touch-Screen Controller pointing device presses on the touch screen, the Y+ and Y- drivers are turned on, connecting one side of the vertical resistive layer to V and the other side to DD ground. In this ...
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Touch-Screen the maximum rate during a conversion, conversions are done less often. There is a significant difference in power consumption between these two modes. In this mode, the MXB7843 is powered down. This mode becomes active ...
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Touch-Screen Controller I/O CS SCK DCLK MISO DOUT MICROWIRE MOSI DIN MASKABLE BUSY INTERRUPT Figure 11. MICROWIRE Interface ground. Connect the digital system ground to the star ground at this point only. For lowest noise operation, ...
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Touch-Screen CS DCLK DIN START BUSY DOUT Figure 14. MXB7843-to-TMS320 Serial Interface Timing Diagram 2.375V TO 5.5V 1µF TO 10µF OPTIONAL TOUCH SCREEN ______________________________________________________________________________________ MODE SER/DEF PD1 PD0 MSB 0.1µ DCLK ...
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Touch-Screen Controller (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information www.maxim-ic.com/packages.) 20 ______________________________________________________________________________________ Package Information PACKAGE OUTLINE, QSOP .150", .025" LEAD PITCH ...
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... 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 ____________________ 21 © 2005 Maxim Integrated Products ...