NXP Semiconductors
KW45B41Z-EVKUM
KW45B41Z-EVK Board User Manual
range (–40
℃
to +105
℃),
this device is an ideal choice for automotive and industrial IoT "motion sensing"
applications.
Figure 23 shows the accelerometer circuit diagram.
LPSPI1_PCS2/INT_COMBO
I2C1_SCL
BT_MODE
2
SCL/SCLK
5
INTF_SEL
9
SPI_CS/WAKE_UP
7
ACCEL_SA0
I2C_SCL_FXLS I2C_SDA_FXLS
Figure 23. Accelerometer circuit diagram
The above circuit diagram is explained below:
• The accelerometer is powered by the VDD_SENSOR supply, which is tied to the VBOARD supply for voltage
level compatibility with the target MCU inputs/outputs
• Discrete pullup resistors are provided for I2C bus lines
• The I2C data signal can be shared with other peripherals through Arduino socket DH connector J2
• One interrupt signal is routed to the accelerometer
Jumper JP43 can be used to configure I2C address of the accelerometer when the accelerometer acts a
secondary I2C device, as explained in the table below.
JP43 setting 8-bit I2C read address 8-bit I2C write address
1-2 shorted (default setting) 0x33 0x32
2-3 shorted 0x31 0x30
Table 17. Accelerometer I2C address configuration
2.9 mikroBUS socket
A mikroBUS socket is a pair of 1x8 position receptacles (connectors) with a proprietary pin configuration. It
allows maximum hardware expandability with smallest number of pins.
The KW45B41Z-EVK board has a mikroBUS socket with two 1x8 position receptacles, J12 and J13. Figure 24
shows the pinouts of the mikroBUS socket connectors.
KW45B41Z-EVKUM All information provided in this document is subject to legal disclaimers. © 2023 NXP B.V. All rights reserved.
User manual Rev. 2 — 13 February 2023
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