BU21182FS-E2 ROHM

Datasheet Capacitive Switch Controller ICs Capacitive Switch Controller IC BU21182FS General Description Key Specifications BU21182FS is a capacitive switch controller for switch Power Supply Voltage Range: 3.0V to 5.5V operation. Based on the result of detecting changes in Operating Temperature Range: -25C to +85C capacitance, judge the operation of Switch ON / OFF / Operating Current: 3.5mA(Typ) Long Press. Package W(Typ) x D(Typ) x H(Max) Features SSOP-A32 13.60mm x 7.80mm x 2.01mm 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. SSOP-A32 Typical Application Circuit VDD VDD VDD VDD (Note 1) 32 1 1.0F DVDD VSS 4.7F SDA NC 0.1F HOST SCL VDD 2.2F INTB AVDD RSTB CS0 ADDR CS1 TEST2 CS2 Sensor Electrode TEST1 CS3 CS19 CS4 CS18 CS5 CS17 CS6 CS7 CS16 CS8 CS15 CS9 CS14 CS10 CS13 CS11 CS12 (Note 2) 17 16 (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 Product structure : Silicon integrated circuit This product has no designed protection against radioactive rays www.rohm.com TSZ02201-0L5L0F301170-1-2 2019 ROHM Co., Ltd. All rights reserved. 1/40 TSZ22111 14 001 05.Feb.2019 Rev.001 BU21182FS Contents General Description ................................................................................................................................................................ 1 Features ................................................................................................................................................................................. 1 Applications ............................................................................................................................................................................ 1 Key Specifications ................................................................................................................................................................... 1 Package ................................................................................................................................................................................. 1 Typical Application Circuit ........................................................................................................................................................ 1 Contents ................................................................................................................................................................................. 2 Pin Configuration .................................................................................................................................................................... 3 Pin Description........................................................................................................................................................................ 3 I/O Equivalent Circuit .............................................................................................................................................................. 4 Block Diagram ........................................................................................................................................................................ 5 Description of Block ................................................................................................................................................................ 5 Absolute Maximum Ratings ..................................................................................................................................................... 6 Thermal Resistance ................................................................................................................................................................ 6 Recommended Operating Conditions ...................................................................................................................................... 7 Electrical Characteristics ......................................................................................................................................................... 7 Interface Specification ............................................................................................................................................................. 8 2-wire Serial Bus Interface Electrical Characteristics ............................................................................................................. 8 2-wire Serial Bus Protocol .................................................................................................................................................... 9 Power-on Sequence / Reset Timing ....................................................................................................................................... 10 Register Map ........................................................................................................................................................................ 11 Register Description .............................................................................................................................................................. 17 Status Register Description ................................................................................................................................................ 17 Configuration Register Description ..................................................................................................................................... 23 Command Register Description .......................................................................................................................................... 33 Operational Notes ................................................................................................................................................................. 36 Ordering Information ............................................................................................................................................................. 38 Marking Diagram................................................................................................................................................................... 38 Physical Dimension and Packing Information ......................................................................................................................... 39 Revision History .................................................................................................................................................................... 40 www.rohm.com TSZ02201-0L5L0F301170-1-2 2019 ROHM Co., Ltd. All rights reserved. 2/40 TSZ22111 15 001 05.Feb.2019 Rev.001