Product Description
The KX126-1063 is a tri-axis ±2g, ±4g or ±8g silicon micromachined
accelerometer with integrated Pedometer, 2048-byte buffer, orientation,
tap/double tap, activity detecting, and Free fall algorithms. The sense
element is fabricated using Kionix’s 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 characteristics
over the range of input supply voltages. I
2C or SPI digital protocol is used to communicate with the chip
to configure and check for updates to the orientation, Directional TapTM 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
 Integrated Free fall, Directional Tap/Double-TapTM, 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
 Digital I2C 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