SPI Isolator Click Board™

The SPI Isolator Click Board™ carries the ADuM4154 5kV digital isolator optimized for a serial peripheral interface (SPI), from Analog Devices. The click is designed to run on either 3.3V or 5V power supply. It communicates with the target microcontroller over SPI interface.

ADUM4154 FEATURES

The ADuM4154 has four high-speed channels. The first three channels, CLK, MI/SO, and MO/SI (the slash indicates the connection of the particular input and output channel across the isolator) are optimized for either low propagation delay in the B grade, or high noise immunity in the A grade.

Note: For more information about the A and B grade specifications see the datasheet.

Take a look at how the click can be connected in the picture below:

Note: For this example we used the ccRF 3 click and the EasyPIC v7 development board

SPI Communication

SPI (Serial Peripheral Interface) communication is one of the most popular protocols for sending data between microcontrollers and different peripherals.

It is a synchronous protocol; the clock signal is provided by the master.

For more information take a look at our Learn article about SPI communication.

SPECIFICATIONS

PINOUT DIAGRAM

This table shows how the pinout of the SPI Isolator Click Board™ corresponds to the pinout on the mikroBUS™ socket (the latter shown in the two middle columns).

Notes	Pin					Pin	Notes
NC	1	AN	PWM	16	NC
NC	2	RST	INT	15	NC
SPI Chip Select	CS	3	CS	TX	14	NC
SPI Clock	SCK	4	SCK	RX	13	NC
SPI Data OUT	SDO	5	MISO	SCL	12	NC
SPI Data IN	SDI	6	MOSI	SDA	11	NC
Power supply	+3.3V	7	3.3V	5V	10	+5V	Power supply
Ground	GND	8	GND	GND	9	GND	Ground