Memsic DB3672B User Manual
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Memsic DB3672B User Manual

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DB3672B Demo Board User Guide
MEMSIC Semiconductor (Tianjin) Co., Ltd.

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Summary of Contents for Memsic DB3672B

  • Page 1 DB3672B Demo Board User Guide MEMSIC Semiconductor (Tianjin) Co., Ltd.

  • Page 2: Introduction

    IoMT (Internet of Moving Things) functionality for the latest MEMSIC motion sensors. It highlights either the MC3672 (1.1 x 1.3 mm CSP) and MC3635 (1.6 x 1.6 mm LGA) ultra-low power, 3-axis accelerometers by providing g-force data to 32-bit ARM Cortex-M4.

  • Page 3: Table Of Contents

    Schematics ..........................16 EV3672/EV3635 EVAL boards install ..................19 Order a board from www.mouser.com/ ..................... 19 GET quick start guide from MEMSIC ....................19 Plug ev36xxa into a breadboard ....................... 19 Connect to processor(arduino) via spi or i2c ..................20 GET drivers from MEMSIC .......................

  • Page 4: Features

    1. MEMSIC 3-axis Accelerometer MC3635 (U9) in 1.6 x 1.6mm LGA package 2. MEMSIC 3-axis Accelerometer MC3672 (U10) in 1.3 x 1.1 mm WLCSP package 3. Ambiq 32-bit ARM Cortex-M4F Apollo2 MCU (U7) with 48 MHz clock frequency, 1 MB flash storage and 256 KB SRAM 4.
  • Page 5 (MC3635 PWR measurement connector) (CR2032) (MC3672 PWR measurement connector) Figure 4 Components (bottom view) MEMSIC DB3672B APS-045-0031 v1.1 Page 5 of 22 Formal release date: 2020/08/17...

  • Page 6: Demo Applications

    DEMO APPLICATIONS DB3672B illustrates with a few common IoT gestures of accelerometer. All results are shown on screen with LEDs to assist demonstration, which consists of following features: Feature Memory DMIPS Version Comments (KB) Data v1.0.0 Raw data Readout Single Tap 0.32...
  • Page 7 (D4) is ON for 2 seconds. When screen is tapped three times with 0.7secs, Triple Tapped is shown and Green LED (D5) is ON for 2 seconds. Figure 7 Tap Mode MEMSIC DB3672B APS-045-0031 v1.1 Page 7 of 22 Formal release date: 2020/08/17...
  • Page 8 Pitch > abs(30 Green LED is ON Roll > abs((30 Yellow LED is ON Both Green Yellow are ON when Pitch and Roll > abs(30 Figure 10 Tilt Mode MEMSIC DB3672B APS-045-0031 v1.1 Page 8 of 22 Formal release date: 2020/08/17...
  • Page 9 Jump Rope mode: track number of Jumps Figure 12 Jump Rope Mode Activity Mode: In this mode DB3672B acts like a pedometer, which measures number of steps taken and current state: still, walking or running. At least 10 steps required to transit from Still to “Walking”...
  • Page 10 2 seconds Figure 14 Activity Mode After Sniff page, subsequent screen shows QR code followed by Data page again in loop. QR Code Figure 15 QR code Mode MEMSIC DB3672B APS-045-0031 v1.1 Page 10 of 22 Formal release date: 2020/08/17...
  • Page 11 Data QR code Tap(s) Sniff/ Shake Power Switch Jump Free Rope Fall Activity Tilt Detect Face Side Figure 16 Demo application flow MEMSIC DB3672B APS-045-0031 v1.1 Page 11 of 22 Formal release date: 2020/08/17...

  • Page 12: Firmware Update Tool

    FIRMWARE UPDATE TOOL Get the tools from MEMSIC STEPS to update firmware: 1. Install CP2102 driver on your PC/laptop from link below: https://www.silabs.com/products/development-tools/software/usb-to-uart-bridge-vcp- drivers Figure 17 Installing USB-to-UART Driver 2. While pressing button (SW3) on sensor board, connect board to computer by micro USB cable 3.
  • Page 13 Figure 18 Serial Port Not Detected Figure 19 DB3672 FW flash tool MEMSIC DB3672B APS-045-0031 v1.1 Page 13 of 22 Formal release date: 2020/08/17...

  • Page 14: Current Measurement

    CURRENT MEASUREMENT DB3672B board has a pair of jumpers for measuring current consumption on MEMSIC accelerometers (U9 & U10). J4 (MC3635) and J5(MC3672) jumper can be used to measure current on sensor, depicted ultra-low power at 0.4uA in Sniff mode.
  • Page 15 Figure 22 Wake supply current @ ultra-low power, 25Hz Sensor Category Sniff Current @ 6Hz Wake Current @ ULP, 25Hz MC3672 0.4 uA 0.9 uA MC3635 0.4 uA 0.9 uA MEMSIC DB3672B APS-045-0031 v1.1 Page 15 of 22 Formal release date: 2020/08/17...

  • Page 16: Schematics

    SCHEMATICS MEMSIC DB3672B APS-045-0031 v1.1 Page 16 of 22 Formal release date: 2020/08/17...
  • Page 17 MEMSIC DB3672B APS-045-0031 v1.1 Page 17 of 22 Formal release date: 2020/08/17...
  • Page 18 MEMSIC DB3672B APS-045-0031 v1.1 Page 18 of 22 Formal release date: 2020/08/17...

  • Page 19: Ev3672/Ev3635 Eval Boards Install

    EV3672/EV3635 EVAL BOARDS INSTALL ORDER A BOARD FROM WWW.MOUSER.COM GET QUICK START GUIDE FROM MEMSIC PLUG EV36XXA INTO A BREADBOARD MEMSIC DB3672B APS-045-0031 v1.1 Page 19 of 22 Formal release date: 2020/08/17...

  • Page 20: Connect To Processor(Arduino) Via Spi Or I2C

    CONNECT TO PROCESSOR(ARDUINO) VIA SPI OR I2C GET DRIVERS FROM MEMSIC MEMSIC DB3672B APS-045-0031 v1.1 Page 20 of 22 Formal release date: 2020/08/17...

  • Page 21: Load And Run Mc36Xx Demo

    LOAD AND RUN MC36XX DEMO MEMSIC DB3672B APS-045-0031 v1.1 Page 21 of 22 Formal release date: 2020/08/17...

  • Page 22: Revision History

    REVISION HISTORY Date Revision Description 2019-06-18 APS-045-0031v1.0 First release. 2020-08-17 APS-045-0031v1.1 Change to MEMSIC format based on the License Agreement with mCube. MEMSIC DB3672B APS-045-0031 v1.1 Page 22 of 22 Formal release date: 2020/08/17...

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