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BU21021GUL-E2 Datasheet(PDF) 1 Page - Rohm |
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BU21021GUL-E2 Datasheet(HTML) 1 Page - Rohm |
1 / 13 page BU21021GUL ○ Product structure:Silicon monolithic integrated circuit ○This product is not designed protection against radioactive rays . 1/10 TSZ02201-0Y1Y0F300060-1-2 © 2012 ROHM Co., Ltd. All rights reserved. 19.Jun.2012 Rev.001 TSZ22111・14・001 www.rohm.com Datasheet 4-wire resistive Touch Screen Controller BU21021GUL ●General Description BU21021GUL is a resistive touch screen controller, which is capable of detecting 2 points touch with a legacy 4-wire resistive touch screen. BU21021GUL is capable of detecting X/Y coordinates, touch pressure in 1 point detection mode, and a pair of X/Y coordinates in 2 point detection mode. It is also capable of recognizing multiple finger gestures from coordinate data variation and notifying to host with gesture detection flags respectively. BU21021GUL employs embedded CPU for noise filtering, coordinate calculation, gesture detection and other signal processing required on a chip. ●Feature ■ Legacy 4-wire resistive touch screen is applicable ■ 1 point / 2 points touch detection ■ On chip coordinate generation ■ Multiple gesture detections ■ 3V single power supply ■ Higher coordinate resolution with 12-bit SAR A/D converter ■ On chip clock generator ■ Selectable HOST I/F(IFSEL pin) 4-wire SPI / 2-wire serial bus ●Key Specification ■ Power supply voltage ■ Temperature range ■ Standby current ■ Sleep current ■ Operating current ■ Coordinate resolution 2.7V to 3.6V -25℃ to 85℃ 5.0uA (Max.) 60uA (Typ.) 4.0mA (Typ.) 12bit ●Package VCSP50L2 2.70 mm x 2.65 mm x 0.55(max) mm ●Application ■ Equipments with user Interface employing 4-wire resistive touch screen. ■ Mobile phone, Tablet PC, PDA or other portable information devices. ■ Digital still camera, Digital video camera, portable TV or other Audio-visual devices. ■ Note PC, Touch screen monitor, printer or other PC peripherals. ●Application Circuit Example (2-wire serial I/F, Slave address=B8h, non-use EEPROM) Figure 1. Application circuit example |
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