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BU21182FS Datasheet(PDF) 1 Page - Rohm |
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BU21182FS Datasheet(HTML) 1 Page - Rohm |
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1 / 43 page  〇Product structure : Silicon integrated circuit 〇This product has no designed protection against radioactive rays 1/40 © 2019 ROHM Co., Ltd. All rights reserved. www.rohm.com TSZ22111 • 14 • 001 TSZ02201-0L5L0F301170-1-2 05.Feb.2019 Rev.001 Capacitive Switch Controller ICs Capacitive Switch Controller IC BU21182FS General Description BU21182FS is a capacitive switch controller for switch operation. Based on the result of detecting changes in capacitance, judge the operation of Switch ON / OFF / Long Press. Features 20 Capacitive Sensor Ports. Switch ON / OFF / Long Press Detection. Information by Interrupt Terminal. Noise Calibration Function. Drift Calibration Function. Adjust Switch Detection Time Function. 2-wire Serial Bus Interface. Single Power Supply. Applications Office Automation Appliance as Printer. AV Appliance as TV and HDD Recorder. Home Appliance as Air Conditioner, Refrigerator and Rice Cooker. Electrical Equipment with Multiple Switches. Key Specifications Power Supply Voltage Range: 3.0V to 5.5V Operating Temperature Range: -25°C to +85°C Operating Current: 3.5mA(Typ) Package W(Typ) x D(Typ) x H(Max) SSOP-A32 13.60mm x 7.80mm x 2.01mm Typical Application Circuit 2.2 μF 0.1 μF 1.0 μF 4.7 μF 1 16 17 32 VSS SDA SCL ADDR NC TEST1 TEST2 CS19 CS18 CS17 CS16 CS15 CS14 CS13 CS12 VDD RSTB DVDD AVDD CS0 CS1 CS2 CS3 CS4 CS5 CS6 CS7 CS8 CS9 CS10 CS11 HOST INTB VDD Sensor Electrode VDD VDD VDD (Note 1) (Note 2) (Note 1) The pull-up resistors must be connected to VDD. Choose the value of the pull-up resistors so as to meet 2-wire Serial Bus Interface Electrical Characteristics. (Note 2) For noise protection, choose the value of the resistors by evaluation. Figure 1. Typical Application Circuit SSOP-A32 Datasheet |
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