PART NUMBER: KX126-1063 2g / 4g / 8g Tri-axis Digital Rev. 3.0 Accelerometer Specifications 05-Jun-2019 Product Description The KX126-1063 is a tri-axis 2g, 4g, or 8g silicon micromachined accelerometer with integrated Pedometer, 2048-byte buffer, TM TM orientation, Directional-Tap /Double-Tap , activity detecting, and Free fall algorithms. The sense element is fabricated using Kionixs proprietary plasma micromachining process technology. Acceleration sensing is based on the principle of a differential capacitance arising from acceleration-induced motion of the sense element, which further utilizes common mode cancellation to decrease errors from process variation, temperature, and environmental stress. The sense element is hermetically sealed at the wafer level by bonding a second silicon lid wafer to the device using a glass frit. A separate ASIC device packaged with the sense element provides signal conditioning, and intelligent user-programmable application algorithms. The accelerometer is delivered in a 2 x 2 x 0.9 mm LGA plastic package operating from a 1.71V 3.6V DC supply. Voltage regulators are used to maintain constant internal operating voltages over the range of input supply voltages. This results in stable operating 2 characteristics over the range of input supply voltages. I C or SPI digital protocol is used to communicate TM TM with the chip to configure and check for updates to the orientation, Directional-Tap /Double-Tap detection, Free fall detection, Pedometer and activity monitoring algorithms. Features Small footprint: 2 x 2 x 0.9 mm LGA 12-pin package (pin-to-pin compatible with KX122) User-configurable g-range up to 8g and Output Data Rate up to 25600Hz Integrated pedometer (step counter) with overflow, watermark, and increment interrupts High resolution Wake-Up/Back-to-Sleep functions with threshold configurable down to 3.9 mg User accessible manufacturer and part ID registers TM TM Integrated Free fall, Directional-Tap /Double-Tap , and Device-orientation Algorithms Improved ODR accuracy in Low Power mode over temperature Factory Programmed Offset and Sensitivity with improved performance over temperature Extra-large embedded 2048-byte FIFO/FILO buffer continues to record data even when being read Low Power Consumption with FlexSet Performance Optimization User-selectable Low Power or High Resolution modes Internal voltage regulator 2 Digital I C up to 3.4MHz and Digital SPI up to 10MHz RoHS / REACH compliant Excellent temperature performance with high shock survivability Self-test Function Digital High-Pass Filter Outputs 36 Thornwood Dr. Ithaca, NY 14850 2019 Kionix All Rights Reserved tel: 607-257-1080 fax:607-257-1146 886-12714-1906051602-0.32 www.kionix.com - info kionix.com Page 1 of 101 Not Recommended for New DesignsPART NUMBER: KX126-1063 2g / 4g / 8g Tri-axis Digital Rev. 3.0 Accelerometer Specifications 05-Jun-2019 Table of Contents PRODUCT DESCRIPTION .................................................................................................................................................................... 1 FEATURES ......................................................................................................................................................................................... 1 TABLE OF CONTENTS ......................................................................................................................................................................... 2 FUNCTIONAL DIAGRAM .................................................................................................................................................................... 6 PRODUCT SPECIFICATIONS ................................................................................................................................................................ 7 MECHANICAL ............................................................................................................................................................................................ 7 ELECTRICAL ............................................................................................................................................................................................... 8 Start Up Time Profile ........................................................................................................................................................................ 9 Current Profile .................................................................................................................................................................................. 9 Power-On Procedure ....................................................................................................................................................................... 10 ENVIRONMENTAL ..................................................................................................................................................................................... 11 Handling, Mounting, Soldering ....................................................................................................................................................... 11 Floor Life ......................................................................................................................................................................................... 11 TERMINOLOGY ........................................................................................................................................................................................ 12 FUNCTIONALITY ....................................................................................................................................................................................... 13 APPLICATION SCHEMATIC AND PIN DESCRIPTION ........................................................................................................................................... 14 Application Schematic .................................................................................................................................................................... 14 Pin Description ................................................................................................................................................................................ 14 PACKAGE DIMENSIONS AND ORIENTATION ................................................................................................................................................... 15 Dimensions ..................................................................................................................................................................................... 15 Orientation ..................................................................................................................................................................................... 16 DIGITAL INTERFACE ......................................................................................................................................................................... 18 2 I C SERIAL INTERFACE ............................................................................................................................................................................... 18 2 I C Operation .................................................................................................................................................................................. 19 Writing to an 8-bit Register ............................................................................................................................................................ 20 Reading from an 8-bit Register ....................................................................................................................................................... 21 Data Transfer Sequences ................................................................................................................................................................ 22 HS-mode ......................................................................................................................................................................................... 23 2 I C Timing Diagram ......................................................................................................................................................................... 24 SPI COMMUNICATIONS............................................................................................................................................................................. 25 4-Wire SPI Interface ........................................................................................................................................................................ 25 4-Wire SPI Timing Diagram ............................................................................................................................................................ 26 4-Wire Read and Write Registers ................................................................................................................................................... 27 3-Wire SPI Interface ........................................................................................................................................................................ 28 3-Wire SPI Timing Diagram ............................................................................................................................................................ 29 3-Wire Read and Write Registers ................................................................................................................................................... 30 EMBEDDED REGISTERS.................................................................................................................................................................... 31 ACCELEROMETER OUTPUTS........................................................................................................................................................................ 32 MAN ID .............................................................................................................................................................................................. 33 PART ID .............................................................................................................................................................................................. 33 XHP L .................................................................................................................................................................................................. 33 36 Thornwood Dr. Ithaca, NY 14850 2019 Kionix All Rights Reserved tel: 607-257-1080 fax:607-257-1146 886-12714-1906051602-0.32 www.kionix.com - info kionix.com Page 2 of 101 Not Recommended for New Designs