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MK712

Features: • Fully integrated, lowest power solution• Low standby current of 0.5A (typical) at 5.0V• Active current while converting less than 10 mA• Resolves 350 dots/inch on 10.5 display• Maximum speed of 197 points/second• Ratiometric conversion may eliminate...

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SeekIC No. : 004421782 Detail

MK712: Features: • Fully integrated, lowest power solution• Low standby current of 0.5A (typical) at 5.0V• Active current while converting less than 10 mA• Resolves 350 dots/inch on...

MK712 Data Sheet

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Part Number:
MK712
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2024/4/27

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Product Details

Description



Features:

• Fully integrated, lowest power solution
• Low standby current of 0.5A (typical) at 5.0V
• Active current while converting less than 10 mA
• Resolves 350 dots/inch on 10.5" display
• Maximum speed of 197 points/second
• Ratiometric conversion may eliminate screen calibration
• Automatically wakes up and goes back to standby
• 3.3V or 5V supply
• 12 bit A/D converter
• Simplifies the writing of software for touch screens
• Extended temperature range available
• Capacitors are the only external components required
• Touch screen is directly driven - no external transistors are required
• Programmable conversion rate
• A to D Converter is monotonic
• Parallel interface
• See the MK715 for a serial interface


Pinout

Connection Diagram


Specifications

Parameter
Conditions
Minimum
Typical
Maximum
Units
Supply Voltage, VDD Referenced to GND
7
V
Inputs and Clock Outputs Referenced to GND
-0.5
VDD+0.5V
V
Ambient Operating Temperature  
0
70
Soldering Temperature Max of 20 seconds
260
Storage temperature  
-65
150



Description

The MK712 Touch Screen Controller IC provides all the screen drive, A to D converter and control circuits to easily interface to 4-wire analog resistive touch screens.

The IC MK712 continually monitors the screen waiting for a touch. In this mode, the supply current is typically 0.5A. When the screen is touched, the IC performs analog to digital conversions to determine the location of the touch, stores the X and Y locations in the registers, and issues an interrupt. This process of MK712 is repeated up to 197 times per second until no further screen touches are detected, at which time the low current mode is resumed.




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