BU21021GUL
Resistive Type Touch Screen Control IC

BU21021GUL is a resistive touch screen controller, which is capable of detecting 2 points touch with a legacy 4-wire resistive touch screen. BU21021GUL is capable of detecting X/Y coordinates, touch pressure in1 point detection mode, and a pair of X/Y coordinates in2 point detection mode.
It is also capable of recognizing multiple finger gestures from coordinate data variation and notifying to host with gesture detection flags respectively.
BU21021GUL employs embedded CPU for noise filtering, coordinate calculation, gesture detection and other signal processing required on a chip.

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Product Detail

 
Part Number | BU21021GUL-E2
Status | Recommended
Package | VCSP50L2
Unit Quantity | 3000
Minimum Package Quantity | 3000
Packing Type | Taping
RoHS | Yes

Specifications:

Vcc(Min.)[V]

2.7

Vcc(Max.)[V]

3.6

MCU

32bit

Resolution

4096 x 4096

Stand-by current[µA]

60.0

Host I/F

I2C / SPI

Operating Temperature (Min.)[°C]

-20

Operating Temperature (Max.)[°C]

85

Features:

・ Legacy 4-wire resistive touch screen is applicable
・ 1 point / 2 points touch detection
・ On chip coordinate generation
・ Multiple gesture detections
・ 3V single power supply
・ Higher coordinate resolution with 12-bit SAR A/D converter
・ On chip clock generator
・ Selectable HOST I/F(IFSEL pin) 4-wire SPI / 2-wire serial bus

Design Resources

 

Technical Articles

Schematic Design & Verification

  • Impedance Characteristics of Bypass Capacitor

Thermal Design

  • Thermal Resistance

Packaging & Quality

Package Information

  • Package Information

Manufacturing Data

  • Factory Information

Environmental Data

  • Compliance with the ELV directive
  • REACH SVHC Non-use Declaration
  • RoHS Comission Delegated Directive

Export Information

  • The Export Control Order
  • Export Administration Regulations(EAR)