Product Description
The KX127-1068 is a tri-axis ±2g, ±4g, or ±8g silicon micromachined
accelerometer with integrated Pedometer, 2048-byte buffer,
orientation, Directional-TapTM/Double-TapTM, 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/Double-TapTM
detection, Free fall detection, Pedometer and activity monitoring algorithms.

Features
• Small footprint: 2 x 2 x 0.9 mm LGA 12-pin package
• 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-TapTM/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