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BU21072MUV データシート(PDF) 2 Page - Rohm |
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BU21072MUV データシート(HTML) 2 Page - Rohm |
2 / 40 page 2/36 BU21072MUV / BU21078MUV / BU21078FV TSZ02201-0L5L0F300640-1-2 © 2012 ROHM Co., Ltd. All rights reserved. www.rohm.com TSZ22111・15・001 14.Jul.2016 Rev.004 OVERVIEW BU21072MUV/BU21078MUV/BU21078FV is a capacitive sensor controller for switch operation. Included blocks are AFE (Analog Front End) detecting capacitance, A/D converter, MPU, LED ports with PWM function, 2-wire serial bus interface compatible with I2C protocol, power-on-reset, oscillator. Operate with a 3.0 to 5.5V single power supply. The results that detected switch operations (Touch/Release/Hold) are held to each register. An interrupt is send from INT port to the host when a register is updated by detected operations. If external noise and temperature drift are detected, run automatic self-calibration. Without periodic polling, offer the reduction of the host load. LED ports are able to be applied PWM function. PWM function offers fade-in / fade-out brightness control. Simple switch One sensor is assigned to one switch. Each simple switch has the registers of detected Touch/Release/Hold operations. Simple switches support to multi-detect Touch/Release/Hold. Unused simple switches are maskable. Matrix switches The cross points of the sensors which are arranged in a matrix are able to assigned to individual switches. Each matrix switch has the registers of detected Touch/Release/Hold operations. Matrix switches do not support to multi-detect Touch/Release/Hold. Not used matrix switches are maskable. BU21072MUV supports 16 matrix switches configured by 4x4 sensors, and BU21078MUV / BU21078FV supports 36 matrix switches configured by 6x6 sensors. Automatic self-calibration BU21072MUV/BU21078MUV/BU21078FV has observed the situation surrounding the sensor based on the detection result. If external noise and temperature drift are detected, the automatic self-calibration is operated for the stable detection result. LED controller with PWM timers LED controller is High active. Each LED port is assigned to a choice of four PWM timers. If the situation surrounding the sensor is changed by the switching LED, it is useable that calibration is operated by sending LED control command. Host interface BU21072MUV/BU21078MUV/BU21078FV is slave device for the host device. 2-wire serial bus is compatible with I2C protocol. Slave Address : 0x5C(BU21072MUV) , 0x5D(BU21078MUV / BU21078FV) Pin Configurations BU21072MUV TOP VIEW 1 6 18 13 24 19 7 12 SIN9 SIN8 SIN7 SIN6 SIN5 SIN4 INT SDA SCL TEST VSS DVDD BU21078MUV TOP VIEW 1 7 21 15 28 22 8 14 SIN7 SIN6 SIN13 SIN5 SIN14 SIN4 SIN3 LED0 INT SDA SCL TEST VSS DVDD SIN0 AVDD VDD DVDD VSS TEST SCL SDA INT LED0 LED1 LED4 SIN6 LED2 SIN1 SIN11 SIN2 SIN12 SIN3 SIN4 SIN14 SIN5 LED3 SIN13 SIN7 LED7 LED6 LED5 1 14 15 28 BU21078FV TOP VIEW Figure 2. Pin configuration (BU21072MUV) Figure 3. Pin configuration (BU21078MUV) Figure 4. Pin configuration (BU21078FV) |
同様の部品番号 - BU21072MUV |
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同様の説明 - BU21072MUV |
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