BU21024FV-M_14 Datasheet, PDF (10/20 Pages) Rohm – Resistive Type Touch Screen Controller ICs

BU210243FGVU-LM BU21023MUV BU21024FV-M
Application Examples
BU21024FV-M supports 2 HOST interfaces (4-wire SPI and 2-wire serial bus).
The figures shown below are application circuits when each interface is used.
*Please connect the terminal of ECL/EDA to GND, when downloading the Firmware form the HOST.
ECL and EDA pins pull up to VDD if an external EEPROM is used. (example : 10kΩ)
*Please insert TVS diode or zener diode to each sensor line to enhance resistance to ESD.
*Please pull up the INT terminal to VDD or HOST IO voltage (max 4.5V).
*In the case of 4-wire SPI use, please pull down the SO terminal to GND.
If not in use, connect it to the GND.
Datasheet
Example 3: BU21024FV-M Application Circuit (4-wireSPI)
In the case of 2-wire serial interface use,
please pull up the INT, SCL_SCK, SDA_SI terminal to VDD or HOST IO voltage(max4.5V).
Example 4: BU21024FV-M Application Circuit (2-wire Serial bus)
www.rohm.com
© 2014 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
10/16
TSZ02201-0L5L0F300190-1-2
31.Mar.2014 Rev.003