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BU21028FV-E2 데이터시트(PDF) 1 Page - Rohm |
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BU21028FV-E2 데이터시트(HTML) 1 Page - Rohm |
1 / 36 page 〇Product structure : Silicon monolithic integrated circuit 〇This product has no designed protection against radioactive rays . 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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