BU21008MUV is a capacitive sensor controller with 16 channels. Half of the sensor ports can be used for LED drivers with PWM function. PWM function can control ambient light. It also has gesture function to recognize short touch, long touch, and finger motion.
The BU21008MUV is a capacitive sensor control IC featuring 16 sensor channels, an integrated 10‑bit A/D converter, LED driver with PWM, and gesture detection for short touch, long touch and finger motion. It operates from a 2.5 V to 3.3 V analog supply and 1.7 V to 3.3 V I/O supply, and is supplied in a VQFN32 package.
The device communicates via a 2‑wire serial interface (compatible with I²C) and includes a host interface, power‑management block, clock generation, and programmable registers for sensor data, button states, gesture parameters, and LED control.
| Analog supply voltage (AVDD) | 2.5 V to 3.3 V |
|---|---|
| I/O supply voltage (DVDD) | 1.7 V to 3.3 V |
| Package | VQFN32 (VQFN032V5050) |
| ADC resolution | 10 bit |
| Oscillator frequency range | 0.4 MHz to 2.0 MHz |
| Operating temperature range (TOPR) | -40 °C to 85 °C |
It uses a 2‑wire serial interface (compatible with I²C) for host communication.
The device provides 16 independent capacitive sensor channels.
The gesture function can recognize short touch, long touch, and finger motion.
Typical AVDD is 3.0 V, with a range from 2.5 V to 3.3 V.