MC3630 3-Axis Accelerometer GENERAL DESCRIPTION FEATURES The MC3630 is an ultra-low power, low- Range, Sampling & Power noise, integrated digital output 3-axis 2, 4, 8, 12 or 16g ranges accelerometer with a feature set optimized 8, 10 or 12-bit resolution with FIFO for wearables and consumer product o 14-bit single samples motion sensing. Applications include Sample rate 14 - 1300 samples/sec wearable consumer products, IoT devices, o Sample trigger via internal oscillator, user interface control, gaming motion input, clock pin or software command electronic compass tilt compensation for Sniff and Wake modes cell phones, game controllers, remote o 0.4 A Sniff current 6Hz controls and portable media products. o Separate or combined sniff/wake Ultra-Low Power with 32 sample FIFO Low noise and low power are inherent in o 0.9 A typical current 25Hz the monolithic fabrication approach, where o 1.6 A typical current 50Hz the MEMS accelerometer is integrated in a o 2.8 A typical current 100Hz single-chip with the electronics integrated o 36 A typical current 1300Hz circuit. Simple System Integration In the MC3630 the internal sample rate can I2C interface, up to 1 MHz be set from 14 to 1300 samples / second. SPI Interface, up to 8 MHz Specific tap or sample acquisition 2.0 2.0 0.94 mm 12-pin package conditions can trigger an interrupt to a Single-chip 3D silicon MEMS remote MCU. Alternatively, the device Low noise to 2.3mgRMS supports the reading of sample and event ROHS Compliant status via polling. Information furnished by MEMSIC is believed to be accurate and reliable. MEMSIC Semiconductor (Tianjin) Co., Ltd. However, no responsibility is assumed by MEMSIC for its use, or for any infringements of patents or other rights of third parties which may result from its Room 4-501, Financial Center, No. 158, West Third Road, use. No license is granted by implication or otherwise under any patent or patent Tianjin Airport Economic Zone, Tianjin, China, 300308 rights of MEMSIC. Tel: +86 022-59896226 www.memsic.com MEMSIC MC3630 APS-048-0047 v1.6 Page 1 of 84 Formal release date: 2020/07/09 TABLE OF CONTENTS 1 Order Information ............................................................................................................. 5 2 Functional Block Diagram ................................................................................................ 6 3 Packaging and Pin Description ........................................................................................ 7 3.1 Package Outline ................................................................................................................... 7 3.2 Package Orientation ............................................................................................................. 8 3.3 Pin Description ..................................................................................................................... 9 3.4 Typical Application Circuits ................................................................................................ 10 3.5 Tape and Reel ................................................................................................................... 13 3.6 Soldering Profile ................................................................................................................. 15 3.7 Shipping and Handling Guidelines ..................................................................................... 15 3.8 Moisture Sensitivity Level Control ...................................................................................... 15 4 Specifications ................................................................................................................. 16 4.1 Absolute Maximum Ratings ................................................................................................ 16 4.2 Sensor Characteristics ....................................................................................................... 17 4.3 Electrical and Timing Characteristics .................................................................................. 18 4.3.1 Electrical Power and Internal Characteristics .................................................................. 18 4.3.2 Electrical Characteristics ................................................................................................ 19 4.3.3 I2C Timing Characteristics .............................................................................................. 20 4.3.4 SPI Timing Characteristics.............................................................................................. 21 5 General Operation ......................................................................................................... 22 5.1 Sensor Sampling ................................................................................................................ 22 5.2 Offset and Gain Calibration ................................................................................................ 22 5.3 Reset ................................................................................................................................. 22 5.4 Reload ............................................................................................................................... 24 5.5 Operational Modes ............................................................................................................. 25 5.6 Mode State Machine Flow .................................................................................................. 26 6 Interfaces ....................................................................................................................... 27 6.1 SPI vs I2C Operation Modes .............................................................................................. 27 6.2 I2C Physical Interface ........................................................................................................ 27 6.3 I2C Message Format .......................................................................................................... 28 6.4 SPI Physical Interface ........................................................................................................ 28 6.5 SPI 3-Wire Mode ................................................................................................................ 29 MEMSIC MC3630 APS-048-0047 v1.6 Page 2 of 84 Formal release date: 2020/07/09