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BU21021GUL-E2 Datasheet(PDF) 1 Page - Rohm

No. de pieza BU21021GUL-E2
Descripción Electrónicos  4-wire resistive Touch Screen Controller
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Fabricante Electrónico  ROHM [Rohm]
Página de inicio  http://www.rohm.com
Logo ROHM - Rohm

BU21021GUL-E2 Datasheet(HTML) 1 Page - Rohm

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BU21021GUL
Product structure:Silicon monolithic integrated circuit ○This product is not designed protection against radioactive rays
.
1/10
TSZ02201-0Y1Y0F300060-1-2
© 2012 ROHM Co., Ltd. All rights reserved.
19.Jun.2012 Rev.001
TSZ22111・14・001
www.rohm.com
Datasheet
4-wire resistive
Touch Screen Controller
BU21021GUL
●General Description
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 in
1 point detection mode, and a pair of X/Y coordinates in
2 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.
●Feature
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
●Key Specification
Power supply voltage
Temperature range
Standby current
Sleep current
Operating current
Coordinate resolution
2.7V to 3.6V
-25℃ to 85℃
5.0uA (Max.)
60uA (Typ.)
4.0mA (Typ.)
12bit
●Package
VCSP50L2
2.70 mm x 2.65 mm x 0.55(max) mm
●Application
Equipments with user Interface employing 4-wire
resistive touch screen.
Mobile phone, Tablet PC, PDA or other portable
information devices.
Digital still camera, Digital video camera, portable TV
or other Audio-visual devices.
Note PC, Touch screen monitor, printer or other PC
peripherals.
●Application Circuit Example
(2-wire serial I/F, Slave address=B8h, non-use EEPROM)
Figure 1. Application circuit example


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