BU21077MUV-E2 ROHM

Datasheet Capacitive Controller ICs Capacitive Switch Controller IC BU21077MUV General Description Key Specifications BU21077MUV is a capacitive switch controller for switch Input Voltage Range 2.7 to 5.5V operation. Operating Temperature Range -20 to +85C BU21077MUV has programmable MPU and it control the sensing sequence and how to use value of sensor. It is Package possible to reduce operational current with devising a VQFN020V4040 4.00 4.00 1.00 sensing sequence. Features Programmable MPU 8 Capacitive Sensor Ports 2-Wire Serial Bus Interface Single Power Supply Built-in Power-On-Reset and Oscillator Applications Portable Device such as Smart Phone, PDA. Electronic Device with Multi Switches Information Appliance such as Projector AV Appliance such as Digital TV, HDD Recorder PC / PC Peripheral Equipment such as Laptop PC Typical Application Circuit 15 11 16 10 SIN1 SIN5 SIN0 SIN6 2.2uF AVDD SIN7 BU21077MUV 1.0uF DVDD TEST RSTB INT VDD 20 6 1M VDD 1 5 HOST 4.7k 4.7k 1.0uF Figure 1. Typical Application Circuit Product structure : Silicon monolithic integrated circuit This product has no designed protection against radioactive rays www.rohm.com TSZ02201-0L5L0F300820-1-2 2013 ROHM Co., Ltd. All rights reserved. 1/12 TSZ2211114001 14.Jul.2016 Rev.002 VDD NC VSS SIN2 NC SIN3 SCL SIN4 SDA NC BU21077MUV Pin Configurations 15 11 16 10 SIN1 SIN5 SIN0 SIN6 BU21077MUV AVDD SIN7 TOP VIEW DVDD TEST RSTB INT 20 6 1 5 Figure 2. Pin Configurations Pin Descriptions I/O Pin Initial Pin Name I/O Functions Note Power Equivalent No. Condition Circuit 1 VDD Power Power - - - 2 VSS Ground Ground - - - 3 NC - - - - - 4 SCL In Host-I/F SCL pin VDD Hi-Z b 5 SDA InOut Host-I/F SDA pin VDD Hi-Z b 6 INT Out Interrupt output VDD Hi-Z b 7 TEST In Test input Fix L at the normal operation VDD Hi-Z c 8 SIN7 InOut Sensor 7 AVDD Hi-Z a 9 SIN6 InOut Sensor 6 AVDD Hi-Z a 10 SIN5 InOut Sensor 5 AVDD Hi-Z a 11 NC - - - - - 12 SIN4 InOut Sensor 4 AVDD Hi-Z a 13 SIN3 InOut Sensor 3 AVDD Hi-Z a 14 SIN2 InOut Sensor 2 AVDD Hi-Z a 15 NC - - - - - 16 SIN1 InOut Sensor 1 AVDD Hi-Z a 17 SIN0 InOut Sensor 0 AVDD Hi-Z a 18 AVDD Power LDO output for analog blocks - - - 19 DVDD Power LDO output for digital blocks - - - 20 RSTB In Reset bar input Active L VDD Hi-Z c I/O Equivalent Circuits AVDD VDD VDD ASW AIN CIN I I PAD PAD I PAD OEN OEN Figure 4. I/O Equivalent Circuit (b) Figure 5. I/O Equivalent Circuit (c) Figure 3. I/O Equivalent Circuit (a) w ww.rohm.com TSZ02201-0L5L0F300820-1-2 2013 ROHM Co., Ltd. All rights reserved. 2/12 TSZ2211115001 14.Jul.2016 Rev.002 VDD NC VSS SIN2 NC SIN3 SCL SIN4 SDA NC