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BU21021GUL Datasheet(PDF) 2 Page - Rohm |
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BU21021GUL Datasheet(HTML) 2 Page - Rohm |
2 / 13 page Datasheet Datasheet 2/10 TSZ02201-0Y1Y0F300060-1-2 © 2012 ROHM Co., Ltd. All rights reserved. 19.Jun.2012 Rev.001 www.rohm.com TSZ22111・15・001 BU21021GUL ●Pin Layout 1 2 3 4 5 A T4 PVDD DVDD VDD DVSS B XP AVDD AVSS DVDD_EXT C XN YP RSTB T1 T2 D YN SEL_CSB SO T3 IFSEL E ECL EDA SCL_SCK SDA_SI INT Top view Figure 2. Pin Layout ●Pin Descriptions Pin no. Pin Name I/O Description Equivalent circuit D1 YN I/O YN channel input. D C1 XN I/O XN channel input. D C2 YP I/O YP channel input. D B1 XP I/O XP channel input. D A1 T4 I/O Test input / output. D A2 PVDD O Regulator output for touch screen voltage supply. D B3 AVDD O Regulator output for analog circuit. D A2 DVDD I/O Regulator output for digital circuit D B4 AVSS - Analog ground. - A4 VDD - Chip power supply. - A5 DVSS - Digital ground. - B5 DVDD_EXT I Digital power supply select. (L=internal、H=external) A C3 RSTB I Reset (Low active) C C4 T1 I Test input. A C5 T2 I Test input. A D4 T3 I Test input. A D5 IFSEL I Host interface select. (L=4-wire SPI, H=2-wire serial) A D3 SO O 2-wire serial High impedance 4-wire SPI Data output O E5 INT O Interrupt E D2 SEL_CSB I 2-wire serial Slave address select 4-wire SPI Chip select I E4 SDA_SI I/O 2-wire serial Data input / output 4-wire SPI Data input I/O E3 SCL_SCK I 2-wire serial Clock input 4-wire SPI Clock input I E2 EDA I/O SDA for EEPROM B E1 ECL I/O SCL for EEPROM B (*1) Bypass AVDD and DVDD to GND with 1.0 uF capacitor and PVDD and T4 need terminal opening. (*2) Digital voltage can be supplied by DVDD when DVDD_EXT=H. (*3) ECL and EDA need pull-up with 4.7kΩ resister in use case. If not use, connect to GND. (*4) SCL_SCK and SDA_SI need pull-up with over 4.7kΩ resister and SO need terminal opening when use 2-wire serial I/F. (*5) Above parameters are only recommended for use. Absolute reliability is not guaranteed. (*6) When VDD is not supplied, state of RSTB=”H” is prohibition. |
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