ROHM BU21008MUV datasheet user manual
Summary
This advanced capacitive sensor controller IC provides robust human-machine interaction for portable electronics. It features 16 sensing channels, integrated gesture recognition, and PWM control for LED indicators. This manual details the complete technical specifications, including the ADC operation, power management logic, and digital interface methods. Ideal for designers creating consumer devices, mobile phones, or smart automation equipment requiring sophisticated, low-power capacitive switching solutions.
Page 1 Text Content
Capacitive Sensor Control IC Series
Capacitive Sensor Switch Control IC
No.09048EBT04
BU21008MUV
●Description BU21008MUV are the capacitive sensor controller with 16 channels respectively. Half of sensor ports are available to use to LED driver with PWM function. PWM function can control light ambient. Also gesture function can recognize the short touch, long touch and finger motion.
●Features 1) Gesture function 2) LED driver with PWM available 3) 2 wire serial interface 4) Power supply = 2.5V to 3.3V, I/O power supply = 1.7V to 3.3V 5) Integrated 10bit AD converter, clock and reset 6) Package VQFN032V5050
●Applications It is possible to use it widely as a switch such as a Mobile phone, Portable equipment, and Audiovisual apparatuses.
●Absolute Maximum Ratings (Ta=25℃)
RATING
PARAMETER SYMBOL UNIT
MIN MAX
AVDD -0.3 4.5
APPLIED VOLTAGE
DVDD -0.3 4.5 VAIN -0.3 AVDD+0.3
INPUT VOLTAGE
VDIN -0.3 DVDD+0.3
STORAGE TEMPERATURE RANGE Tstg -55 125 ℃ POWER DISSIPATION Pd 304 m W Ambient temperature reduces a permission loss by 3.1m W per case more than 25 degrees Celsius, 1 degree Celsius.
●Recommended Operating conditions
RATING
PARAMETER SYMBOL UNIT
MIN TYP MAX
AVDD 2.5 3.0 3.3 V
APPLIED VOLTAGE
DVDD 1.7 3.0 3.3 V
OPERATINGTEMPERATURE RANGE Topr -40 25 85 ℃
www.rohm.com 2009.04 - Rev.B
© 2009 ROHM Co., Ltd. All rights reserved.
Page Summary Contents For ROHM BU21008MUV datasheet user manual
Manual Details
| Brand | ROHM |
|---|---|
| Pages | 17 |
| File Size | 677.81 KB |
| Published | July 15, 2026 |
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Frequently Asked Questions
What types of touch gestures can the capacitive sensor recognize?
The gesture function supports recognizing short touch, long touch, and finger motion.
How does this control IC interface with a host system?
It utilizes a two-wire serial interface for communication purposes.
What are the recommended voltage ranges for AVDD and DVDD?
AVDD should operate between 2.5V and 3.3V, while DVDD should operate between 1.7V and 3.3V.
Can this device be used in life-critical systems (e.g., medical or aerospace)?
No, it is not designed for equipment requiring extremely high levels of reliability where failure poses a threat to human life.