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BU21023GUL-E2 bảng dữ liệu(PDF) 11 Page - Rohm |
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BU21023GUL-E2 bảng dữ liệu(HTML) 11 Page - Rohm |
11 / 21 page BU21023GUL BU21023MUV BU21024FV-M 11/17 TSZ02201-0L5L0F300840-1-2 © 2013 ROHM Co., Ltd. All rights reserved. 7.June.2016 Rev.004 www.rohm.com TSZ22111・15・001 Application Examples 【BU21023GUL BU21023MUV】 BU21023GUL/MUV support 2 HOST interfaces (4-wire SPI and 2-wire serial bus). The figures shown below are application circuits when each interface is used. (Although BU21023GUL is CSP package, it is shown in similar figure for comparison.) *Please connect the terminal of ECL/EDA to GND when downloading the firmware from 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. BU21023 Host SO IFSEL T3 T2 T1 CLK_EXT RSTB VDD VDD 0.1uF 1uF 1uF 10kohm (10kohm) YN XN YP XP panel 1nF 1nF 1nF 1nF 10ohm 10ohm 10ohm 10ohm option(*1) option(*3) option(*2) (*1) For Noise protection RC-LPF. (Please select constant and design for requirement and environment) (*2) For ESD protection. (Zener diode/TVS diode) (*3) EEPROM interface PIN. Please pull-up to VDD in use. (*5) Please pull-down as prevention against the SO terminal output Hi-Z. option(*5) 1uF Example 1: BU21023GUL/MUV 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). (*1) For Noise protection RC-LPF. (Please select constant and design for requirement and environment) (*2) For ESD protection. (Zener diode/TVS diode) (*3) EEPROM interface PIN. Please pull-up to VDD in use. (*4) Please connect to VDD when use as slave address = "BAh". BU21023 YN XN Host YP XP SO IFSEL T3 T2 T1 CLK_EXT RSTB VDD VDD panel 0.1uF 1uF 1uF 10kohm 10kohm 10kohm 1nF 1nF 1nF 1nF 10ohm 10ohm 10ohm 10ohm option(*1) option(*2) option(*3) option(*4) 1uF Example 2: BU21023GUL/MUV Application Circuit (2-wire Serial bus) |
Số phần tương tự - BU21023GUL-E2 |
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Mô tả tương tự - BU21023GUL-E2 |
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