Capacitive Switch Controller IC - BU21077MUV (New)

BU21077MUV is a capacitive switch controller for switch operation. BU21077MUV has programmable MPU and it control the sensing sequence and how to use value of sensor. It is possible to reduce operational current with devising a sensing sequence.

* This product is a STANDARD grade product and not recommend for on-vehicle devices.
Part Number
Unit Quantity
Minimum Package Quantity
Packing Type
Constitution Materials List
BU21077MUV-E2 Active VQFN020V4040 2500 2500 Taping inquiry Yes
Vcc(Min.)[V] 2.7
Vcc(Max.)[V] 5.5
Sensor input channels 8
Interface I2C
Matrix key Variable
Operating Temperature (Min.)[°C] -20
Operating Temperature (Max.)[°C] 85
    • Programmable MPU
    • 8 Capacitive Sensor Ports
    • 2-Wire Serial Bus Interface
    • Single Power Supply
    • Built-in Power-On-Reset and Oscillator
ROHM Semiconductor reserves the right to change the specifications at any time.
Technical Data
Application Note

Thermal Resistance

NE Handbook Series

Sensor Networks