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AK4185 - Low Power Touch Screen Controller

Description

The AK4185 is a 4-wire/ 5-wire resistive touch screen controller that incorporates 12bit SAR A/D converter.

The AK4185 operates down to 1.6V supply voltage in order to connect a low voltage microprocessor.

Features

  • 4-wire or 5-wire Touch Screen Interface.
  • SPITM Serial Interface.
  • 12bit SAR A/D Converter with S/.

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Datasheet preview – AK4185

Datasheet Details

Part number AK4185
Manufacturer Asahi Kasei Microsystems
File Size 440.59 KB
Description Low Power Touch Screen Controller
Datasheet download datasheet AK4185 Datasheet
Additional preview pages of the AK4185 datasheet.

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Full PDF Text Transcription

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[AK4185] AK4185 Low Power Touch Screen Controller with SPI™ Interface GENERAL DESCRIPTION The AK4185 is a 4-wire/ 5-wire resistive touch screen controller that incorporates 12bit SAR A/D converter. The AK4185 operates down to 1.6V supply voltage in order to connect a low voltage microprocessor. The AK4185 has both an automatic continuous measurement and a measurement data calculation function. The functions that normally require external processing, such as calculating the average screen input value, are processed by the AK4185. In addition, a new sequential mode achieves short coordinate measurement time while greatly reducing the microprocessor overhead. The AK4185 can detect the pressed screen location by performing two A/D conversions and it can also measure touch pressure.
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