4-wire Resistive Touch Screen Controller - BU21028FV-M

Unlike most resistive touch screen controllers, the BU21028FV-M 4-wire resistive touch-screen controller can generate data that enables dual touch detection. The Host processor can use this data to detect single and dual point coordinates.

Part NumberStatusPackageUnit QuantityMinimum Package QuantityPacking TypeRoHS
BU21028FV-ME2ActiveSSOP-B2025002500TapingYes

BU21028FV-M Data Sheet

Specifications
Vcc(Min.)[V]2.7
Vcc(Max.)[V]3.6
MCU-
Resolution4096 x 4096
Stand-by current[µA]100.0
Host I/FI2C
Operating Temperature (Min.)[°C]-40
Operating Temperature (Max.)[°C]85
Technical Documents
Features
  • AEC-Q100
  • standard 4-wire resistive touch screens
  • Single and dual touch detection
  • I2C-like interface (for the host processor I/F)
  • 12-bit resolution
  • Single 2.7V to 3.6V power supply
  • Auto power down/on control
  • Built-in clock oscillator circuit
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