Datasheet > BU21028FV-M

BU21028FV-M

更新时间： 2024-01-10 07:37:56

品牌	Logo	应用领域
罗姆 - ROHM		/
页数	文件大小	规格书
36页	2158K
描述
4-wire Resistive Touch Screen Controller

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BU21028FV-M 数据手册

Datasheet

Resistive touch screen controller LSI series for Automotive

4-wire Resistive

Touch Screen Controller

BU21028FV-M

General Description

Key Specifications

Unlike most resistive touch screen controllers, the

BU21028FV-M 4-wire resistive touch-screen controller

can generate data that enables dual touch detection.

The Host processor can use this data to detect single

and dual point coordinates.



Power supply voltage:

Temperature range:

Standby current:

Sleep current:

Operating current:

Coordinate resolution:

2.7V to 3.6V

-40°C to +85°C

1.0 μA(Max)

100 μA(Max)

0.8 mA(Typ)

12bit

Features

 AEC-Q100^{(Note 1)}

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

Package(s)

 standard 4-wire resistive touch screens

 Single and dual touch detection

 I2C-like interface (for the host processor I/F)

 12-bit resolution

SSOP-B20

6.50 mm x 6.40 mm x 1.15 mm

 Single 2.7V to 3.6V power supply

 Auto power down/on control

 Built-in clock oscillator circuit

(Note1: Grade 3)

Applications

■

Equipment with built-in user interface for 4-wire

resistive touch screen

Portable information equipment like smart phones,

tablets, and PDAs

PCs or peripheral equipment like laptops, touch

screen monitors, and printers

audioIn-vehicle terminals such as car navigation

system, car audio system and display audio

systems

Typical Application Circuit(s)

VDD

Host IO VDD

option(*1)

option(*4)

33ohm

10ohm

RSTB

Y+

1.0nF

33ohm

10ohm

SCL

SDA

INT

1.0nF

Host

10ohm

X-

X+

(GPIO port）

BU21028FV-M

1.0nF

10ohm

1.0nF

option(*2)

Y-

4- wire

resistive

touch

AUX

AD0

AD1

option(*3)

screen

Option(*1) For the touch panel noise reduction

(Please choose the fixed valuse to environment, a demand)

Option(*2) Please connect to VDD, when use as Slave address = 41h

Option(*3) For ESD protection (Zener diode / TVS diode)

Option(*4) Damping resistance

(Please choose the fixed valuse to environment, a demand)

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

.www.rohm.com

TSZ02201-0L5L0F300720-1-2

27.May.2016 Rev.002

1/32

TSZ22111 • 14 • 001

12 3 4 5 6 7...36

中文翻译

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