BU21024FV-M_14 Datasheet, PDF (1/20 Pages) Rohm – Resistive Type Touch Screen Controller ICs

Datasheet
Resistive Type Touch Screen Controller ICs
BU21024FV-M
General Description
Unlike most resistive touch screen controllers, the
BU21024 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
SSOP-B28
W(Typ) x D(Typ) x H(Max)
10.0mm x 7.60mm x 1.35mm
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 I²C 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 large volume automotive,
consumer, and industrial applications
„ AEC-Q100 Qualified
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 computers, LCD displays
(with USB interface)
„ Car navigation system, Car Audio
Key Specifications and Lineup
Parameter
Screen
Maximum Detection Point
Integrated Filter Process
Gesture Detection
Supplied Voltage Range(V)
Temperature Range(°C)
Host I/F
Pakage
BU21024FV-M
4-wire resistive
touch screens
2
Yes
Yes
2.7 to 3.6
-40 to +85
4-wire SPI
2-wire serial
SSOP-B28
○Product structure：Silicon monolithic integrated circuit ○This product has no designed protection against radioactive rays
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31.Mar.2014 Rev.003