поискавой системы для электроныых деталей |
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BU21072MUV-E2 датащи(PDF) 4 Page - Rohm |
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BU21072MUV-E2 датащи(HTML) 4 Page - Rohm |
4 / 40 page 4/36 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 Block Diagram LDO15 LDO28 VREF OSC Sensor AFE C/V Converter A/D AVDD DVDD SIN* LED* LOGIC AFE MPU WRAM PROM LEDDRV VDD VSS AFE_CNT PWM_CNT INT WDTR POR HOST I/F TEST SCL SDA Description of Blocks Sensor AFE, C/V Converter Convert from capacitance to voltage following the order of sensors. A/D Convert from voltage to the detected result the digital value. LDO28 2.73V output LDO for Sensor AFE, C/V Converter and A/D. LDO15 1.5V output LDO for OSC and digital blocks. OSC Ring oscillator as the system clock. POR Power-On-Reset monitoring VDD as the system reset. MPU Based on the detection result, detect switch operations (Touch/Release/Hold) and run Auto-calibration. Inform by the INT port to the host about that the switch operations are detected. LED ports are controlled by the commands from the host. PROM Program ROM for the included MPU. WRAM Work RAM for the included MPU. HOST I/F 2-wire serial bus interface compatible with I2C protocol. AFE_CNT Sequencer of Sensor AFE, C/V converter and A/D. PWM_CNT PWM timers for the LED ports. LEDDRV LED port drivers. WDTR Watchdog Timer Reset. It releases the system reset after 1 sec from that MPU cannot clear WDTR. (If MPU cannot clear WDTR, MPU is hang-up.) Figure 8. Block Diagram |
Аналогичный номер детали - BU21072MUV-E2 |
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Аналогичное описание - BU21072MUV-E2 |
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