KX022-1020 Datasheet, PDF (27/75 Pages) List of Unclassifed Manufacturers – Accelerometer Specifications

± 2g / 4g / 8g Tri-axis Digital
Accelerometer Specifications
PART NUMBER:
KX022-1020
Rev. 11.0
10-Sep-15
3-Wire SPI Interface
The KX022 also utilizes an integrated 3-Wire Serial Peripheral Interface (SPI) for digital communication. 3-
wire SPI is a synchronous serial interface that uses two control lines and one data line. With respect to the
Master, the Serial Clock output (SCLK), the Data Output/Input (SDI) are shared among the Slave devices.
The Master generates an independent Chip Select (nCS) for each Slave device that goes low at the start of
transmission and goes back high at the end. This allows multiple Slave devices to share a master SPI port as
shown in Figure 5 below.
Figure 5: 3-wire SPI Connections
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