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ROHM Semiconductor - Resistive Type Touch Screen Controller ICs

Numéro de référence BU21023GUL
Description Resistive Type Touch Screen Controller ICs
Fabricant ROHM Semiconductor 
Logo ROHM Semiconductor 





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BU21023GUL fiche technique
Datasheet
Resistive Type Touch Screen Controller ICs
BU21023GUL BU21023MUV
General Description
Unlike most resistive touch screen controllers, the
BU21023 4-wire resistive touch screen controller
enables dual-touch detection and gesture recognition.
These intelligent controllers expose a set of registers to
a HOST processor and are configured through software.
The controllers can detect single point coordinates, dual
coordinates, pinch, spread, rotate left and rotate right
gestures, enabling pan and zoom operations in
applications that previously had to rely exclusively on
capacitive touch technology. Resistive touch does not
require custom screen development which reduces
development cost, and results in faster time to market
across a family of products.
Packages
VCSP50L2
VQFN028V5050
W(Typ) x D(Typ) x H(Max)
2.60mm x 2.60mm x 0.55mm
5.00mm x 5.00mm x 1.00mm
VCSP50L2
VQFN028V5050
Features
Enables single touch, dual touch & gesture
recognition using standard 4-wire resistive touch
screens
Adjustable touch detection threshold allows fine
tuning of pressure sensitivity for an application
Enables measurement of single point touch
pressure
SPI- and 2-wire serial interface for interfacing to
HOST processor
Programmable interrupt polarity
10-bit ADC provides sufficient resolution for finger
or stylus inputs
Firmware for internal CPU may be downloaded
from HOST processor or from an EEPROM
Includes filtering options to eliminate false
coordinates
Built in support for intelligent calibration
Easy to swap X & Y coordinates or adapt to
different touch screen connections
Single 3V power supply
Available in small packages and temperature
ranges
Ideally suited for consumer
Applications
Products with an LCD can benefit from pan and
zoom operations.
Smart phones, Digital Cameras, Video Cameras,
GPS Receivers, Printers,
Copiers, automotive navigation screens, touch
kiosks
Tablet PCs , Notebook PCs, LCD displays (with
USB interface)
Key Specifications and Lineup
Parameter
Screen
Maximum Detection Point
Integrated Filter Process
Gesture Detection
Supplied Voltage Range(V)
Temperature Range(°C)
Host I/F
Package
BU21023GUL
4-wire resistive
touch screen
2
Yes
Yes
2.7 to 3.6
-20 to +85
4-wire SPI
2-wire serial
VCSP50L2
BU21023MUV
4-wire resistive
touch screen
2
Yes
Yes
2.7 to 3.6
-20 to +85
4-wire SPI
2-wire serial
VQFN028V5050
Product structureSilicon monolithic integrated circuit
.www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
TSZ2211114001
This product has no designed protection against radioactive rays
1/17
TSZ02201-0L5L0F300840-1-2
7.June.2016 Rev.004

PagesPages 21
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