Datasheet > BU21026MUV

BU21026MUV

更新时间： 2024-01-23 23:14:12

品牌	Logo	应用领域
罗姆 - ROHM		/
页数	文件大小	规格书
23页	2090K
描述
4-wire Resistive Touch Screen Controller

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BU21026MUV 数据手册

Datasheet

Resistive touch screen controller LSI series

4-wire Resistive

Touch Screen Controller

BU21026MUV

General Description

Key Specifications

BU21026MUV is a low power 4-wire resistive touch

screen controller. BU21026MUV measures coordinates

and touch pressures with a 12bit A/D converter.

BU21026MUV has a digital filter for noise reduction.

 Power supply voltage

 Temperature range

 Standby current

 Operating current

 Coordinate resolution

1.65V to 3.60V

-30℃ to 85℃

0.8uA (Max.)

120uA (Typ.)

12Bits

Features

W(Typ) x D(Typ) x H(Max)

4.00mm x 4.00mm x 1.00mm

 4-wire resistive touch screen controller

 Single 1.65V to 3.60V supply.

 Low standby current ( 0.8uA max)

 12bit SAR A/D converter

 2-wire serial interface

 Command base interface

 Digital filter

Package

VQFN020V4040

 Touch pressure measurement

 Auto power down control

 Built-in clock oscillation circuit

Applications

 Equipment with a built in user interface of 4-wire

resistive touch screen

 Portable device such as smart phone, tablet, PDA.

 Digital still camera, digital video camera, portable TV.

 PC / PC peripheral equipment such as laptop PC,

touch screen monitor, printer.

VDD

Typical Application Circuit(s)

1.0μF 0.1μF

2.2kΩ

GND

Master

( 2-wire serial

interface )

Auxilary Input

AUX

SDA

SCL

INT

SDA

10Ω

SCL

0.1μF

GPIO

BU21026

10Ω

AD1

AD0

0.1μF

Touch

Screen

GND

1. 4-wire resistive touch screen

2. Pull-up resistor for 2-wire serial interface

3. Bypass capacitors

4. Diodes for ESD protection

5. Low pass filter for noise reduction

〇Product structure : Silicon monolithic integrated circuit 〇This product has no designed protection against radioactive rays

.www.rohm.com

TSZ02201-0L5L0FF00890-1-2

4.Aug.2016 Rev.001

1/19

TSZ22111 • 14 • 001

12 3 4 5 6 7...23

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