SPI Isolator 6 Click Board™

Product Code: MIKROE-5265

How Does The SPI Isolator 6 Click Board™ Work? The SPI Isolator 6 Click Board™ as its foundation uses the MAX22345, a four-channel digital isolator with a maximum data rate of 200Mbps from Analog Devices. The MAX22345 provides galvanic isolation for digital signals transmitted between two ground domains and can withstand up to 784Vpeak of continuous isolation and up to 3.75kVRMS for up to 60 seconds. Besides, it also offers low-power operation, high electromagnetic interference (EMI) immunity, and stable temperature performance through Analog's proprietary process technology. Both power pins' wide supply voltage range allows the MAX22345 to be used for level translation and isolation. Because the SPI Isolator 6 Click Board™ represents an isolator for SPI communication, it logically communicates with the MCU precisely through that communication. As already mentioned, the MAX22345 has two power pins for the A and B isolation sides, where it is possible to supply its B side with external voltage in the range of 1.7 to 5.5V by applying it to the terminal marked with VCC_EXT.

In addition to the external power supply terminal, this Click board ™ also possesses another two terminals to which the isolated SPI data communication lines are routed. The SPI Isolator 6 Click Board™ can operate with both 3.3V and 5V logic voltage levels selected via the VCC SEL jumper. This way, it is allowed for both 3.3V and 5V capable MCUs to use the communication lines properly. However, the Click board™ comes equipped with a library containing easy-to-use functions and an example code that can be used, as a reference, for further development. SPECIFICATIONS Type Isolators,SPI Applications Can be used for general SPI-bus isolation, industrial, process and building automation, programmable logic controllers, and many more On-board modules MAX22345 - four-channel digital isolator from Analog Devices Key Features Reinforced galvanic isolation for SPI communication, up to 200Mbps maximum data rate, withstands 3.75kVRMS for 60s, low power consumption, and more Interface SPI Compatibility mikroBUS Click board size M (42.9 x 25.4 mm) Input Voltage 3.3V or 5V,External PINOUT DIAGRAM This table shows how the pinout of the SPI Isolator 6 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 RX 14 NC SPI Clock SCK 4 SCK TX 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 ONBOARD SETTINGS AND INDICATORS Label Name Default Description LD1 PWR - Power LED Indicator JP1 VCC SEL Left Logic Level Voltage Selection 3V3/5V: Left position 3V3, Right position 5V SPI ISOLATOR 6 CLICK ELECTRICAL SPECIFICATIONS Description Min Typ Max Unit Supply Voltage 3.3 - 5 V External Supply Voltage VCC_EXT 1.7 - 5.5 V Data Rate - - 200 Mbps Isolation Voltage (Continuously) - - 784 VRMS