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BU21028FV-E2 데이터시트(PDF) 1 Page - Rohm

부품명 BU21028FV-E2
상세설명  4-wire Resistive Touch Screen Controller
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BU21028FV-E2 데이터시트(HTML) 1 Page - Rohm

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〇Product structure : Silicon monolithic integrated circuit 〇This product has no designed protection against radioactive rays
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1/32
TSZ02201-0L5L0F300720-1-2
© 2016 ROHM Co., Ltd. All rights reserved.
27.May.2016 Rev.002
TSZ22111 • 14 • 001
www.rohm.com
Resistive touch screen controller LSI series for Automotive
4-wire Resistive
Touch Screen Controller
BU21028FV-M
General Description
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.
Features
AEC-Q100
(Note 1)
standard 4-wire resistive touch screens
Single and dual touch detection
I2C-like interface (for the host processor I/F)
12-bit resolution
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
Key Specifications
Power supply voltage:
2.7V to 3.6V
Temperature range:
-40°C to +85°C
Standby current:
1.0 μA(Max)
Sleep current:
100 μA(Max)
Operating current:
0.8 mA(Typ)
Coordinate resolution:
12bit
Package(s)
SSOP-B20
6.50 mm x 6.40 mm x 1.15 mm
Typical Application Circuit(s)
VDD
YN
YP
XN
XP
AUX
RSTB
SCL
SDA
INT
AD1
BU21028FV-M
Host IO VDD
4- wire
resistive
touch
screen
Y+
Y-
X-
X+
10ohm
10ohm
10ohm
10ohm
1.0nF
1.0nF
1.0nF
1.0nF
option(*1)
option(*2)
AD0
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)
Host
(GPIO port)
option(*4)
33ohm
33ohm
33ohm
33ohm
option(*3)
W(Typ) x D(Typ) x H(Max)
Datasheet


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