電容式感測器、開關控制IC - BU21072MUV
BU21072MUV/BU21078MUV 是針對開關操作的電容式感測器控制器。
除在每個開關中使用1個感測器外，也可將矩陣狀配置多個感測器的交點用作1個開關。依據檢測結果感知溫度漂移、外來噪音，實施自動校準。
內建適用於PWM 的LED控制器。
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規格:
Vcc(Min.)[V]
3.0
Vcc(Max.)[V]
5.5
Sensor input channels
10
LED control channels
6
Interface
I2C
Matrix key
4 x 4
Operating Temperature (Min.)[°C]
-20
Operating Temperature (Max.)[°C]
85
功能:
・ 10 capacitive sensor ports. (BU21072MUV) 12 capacitive sensor ports. (BU21078MUV)・ Supported Matrix switches. Maximum 16 switches. (BU21072MUV) Maximum 36 switches. (BU21078MUV)
・ Automatic self-calibration.
・ Held touch detection.
・ LED controller with PWM function.
・ Inform the detected result of switch operation by interrupt.
・ 2-wire serial bus interface.
・ 3.3V single power supply.
・ Built-in Power-On-Reset and Oscillator.