Mcube MC3672 Quick Start Manuals page 4

MC3672 Accelerometer Driver
R4, R5: If using I2C and I2C pull-up resistors are needed for your application then
install~4.7KΩ resistors into R4 (SCL clock pin) and R5 (SDA data pin) which are not
installed by factory default. In addition, besides soldering resisters on R4/R5, you can add
axial lead 4.7K ohm resistors to the SDA and SCL pin respectively. It will work the same
either way.
NOTE: DO NOT install more than one setup pull-up resistors per I2C bus.
1.4 SPI PINS
With an SPI connection, there is always one master device (usually a microcontroller)
which controls the peripheral devices. Typically, there are three wires commonly
connected to all the devices:
Connect the SCS (Slave Select) to the pin on the device that the master can use to enable
and disable SPI cycles.
Connect the SCL (Serial clock) to the pin where the clock pulses synchronize data
transmission generated by the master
Connect SDO to the pin
Output).
Connect SDA to the
Slave Input).
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where the Slave sends data to the master (Master Input, Slave
pin where the Master sends data to the peripherals (Master Output,
APS-045-0017v1.2
Quick Start Guide and Demo
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