Mikroelektronika d.o.o.
I2C Isolator 6 Click Board
I2C Isolator 6 Click Board
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Key Features
- Robust galvanic isolation of digital signals, withstands 5kVRMS for 60s, low power consumption, supports hot swap application, glitch-free operation, excellent reliability, long operational life, and more
- Based on the ADUM2250 - two-channel I2C digital isolator from Analog Devices
- Can be used for transferring digital signals between circuits with different power domains
- mikroBUS: I2C Interface
Overview
Eliminate the Need for Splitting I2C Signals
With the ADUM2250, you'll enjoy two bidirectional channels that support a fully isolated I2C interface, eliminating the need for splitting I2C signals into separate transmit and receive signals. This innovative design allows for data rates from DC up to 1MHz and includes hot swap circuitry to prevent data glitches.
Perfect for Transferring Digital Signals Between Circuits
Our I2C Isolator 6 Click Board™ is the ideal solution for transferring digital signals between circuits with different power domains at ambient temperatures. Experience seamless integration and optimal performance in your next project.
Supported by mikroSDK Compliant Library
Our I2C Isolator 6 Click Board™ is backed by a mikroSDK compliant library, offering a suite of functions that streamline software development. You'll have all the tools you need to get started right away.
Ready to Use with mikroBUS™ Socket
This Click board™ comes as a fully tested product, ready to be used on a system equipped with the mikroBUS™ socket. Don't wait – upgrade your project with the I2C Isolator 6 Click Board™ today!
How Does The I2C Isolator 6 Click Board™ Work?
The I2C Isolator 6 Click Board™ is based on the ADUM2250, a two-channel, 5kVRMS I2C digital isolator from Analog Devices, suitable for hot-swap applications. The ADUM2250 bidirectionally buffers the two I2C signals across the isolation barrier while providing 5kVRMS of galvanic isolation. It transfers digital signals with data rates up to 1MHz between circuits with different power domains at ambient temperatures. It offers the glitch-free operation, excellent reliability, and very long operational life. The wide temperature range and high isolation voltage make the device ideal for harsh industrial environments.
The I2C Isolator 6 Click Board™ also possesses two terminals labelled as VIN and SDA/SCL at the top of the Click board™, where VIN represents the isolated-side power supply of the isolator, while the other corresponds to the isolated bidirectional logic-bus terminal.
This Click board™ can operate with either 3.3V or 5V logic voltage levels selected via the VCC SEL jumper. This way, both 3.3V and 5V capable MCUs can 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 | I2C,Isolators |
| Applications | Can be used for transferring digital signals between circuits with different power domains |
| On-board modules | ADUM2250 - two-channel I2C digital isolator from Analog Devices |
| Key Features | Robust galvanic isolation of digital signals, withstands 5kVRMS for 60s, low power consumption, supports hot swap application, glitch-free operation, excellent reliability, long operational life, and more |
| Interface | I2C |
| Compatibility | mikroBUS |
| Click board size | M (42.9 x 25.4 mm) |
| Input Voltage | 3.3V or 5V |
PINOUT DIAGRAM
This table shows how the pinout of the I2C 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 | ||
| NC | 3 | CS | RX | 14 | NC | ||
| NC | 4 | SCK | TX | 13 | NC | ||
| NC | 5 | MISO | SCL | 12 | SCL | I2C Clock | |
| NC | 6 | MOSI | SDA | 11 | SDA | I2C Data | |
| 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 |
I2C ISOLATOR 6 CLICK ELECTRICAL SPECIFICATIONS
| Description | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage | 3.3 | - | 5 | V |
| Maximum Withstand Isolation Voltage | - | - | 5000 | VRMS |
| Data Rate | - | - | 1 | Mbps |
Software Support
Software Support
We provide a library for the I2C Isolator 6 Click Board™ as well as a demo application (example), developed using MikroE compilers. The demo can run on all the main MikroE development boards.
The package can be downloaded/installed directly from NECTO Studio The package Manager (recommended), downloaded from our LibStock™ or found on MikroE Github account.
Library Description
This library contains API for I2C Isolator 6 Click driver.
Key functions
-
i2cisolator6_writeI2C Isolator 6 I2C writing function. -
i2cisolator6_readI2C Isolator 6 I2C reading function. -
i2cisolator6_write_then_readI2C Isolator 6 I2C write then read function.
Example Description
This library contains API for the I2C Isolator 6 Click Board™ driver. This demo application shows an example of the I2C Isolator 6 Click Board™ wired to the I2C Isolator 6 Click Board™ or reading device ID. The library also includes an I2C writing and reading functions.
void application_task ( void )
{
static uint8_t device_id = 0;
static uint8_t reg = ACCEL21_REG_WHO_AM_I;
if ( I2CISOLATOR6_OK == i2cisolator6_write_then_read( &i2cisolator6, ®, 1, &device_id, 1 ) )
{
if ( ACCEL21_DEVICE_ID == device_id )
{
log_printf( &logger, " Device ID: 0x%.2Xrn", ( uint16_t ) device_id );
log_printf( &logger, "---------------------rn" );
}
}
Delay_ms( 1000 );
}
The full application code, and ready to use projects can be installed directly from NECTO Studio The package Manager (recommended), downloaded from our LibStock™ or found on MikroE Github account.
Other MikroE Libraries used in the example:
- MikroSDK.Board
- MikroSDK.Log
- Click.I2CIsolator6
Additional Notes and Information
Depending on the development board you are using, you may need USB UART Click Board™, USB UART 2 Click or RS232 Click to connect to your PC, for development systems with no UART to USB interface available on the board. UART terminal is available in all MikroE compilers.
MIKROSDK
The I2C Isolator 6 Click Board™ is supported with mikroSDK - MikroE Software Development Kit, which needs to be downloaded from the LibStock and installed for the compiler you are using to ensure proper operation of mikroSDK compliant Click board™ demo applications.
Software Support
Software Support
We provide a library for the I2C Isolator 6 Click Board™ as well as a demo application (example), developed using MikroE compilers. The demo can run on all the main MikroE development boards.
The package can be downloaded/installed directly from NECTO Studio The package Manager (recommended), downloaded from our LibStock™ or found on MikroE Github account.
Library Description
This library contains API for I2C Isolator 6 Click driver.
Key functions
-
i2cisolator6_writeI2C Isolator 6 I2C writing function. -
i2cisolator6_readI2C Isolator 6 I2C reading function. -
i2cisolator6_write_then_readI2C Isolator 6 I2C write then read function.
Example Description
This library contains API for the I2C Isolator 6 Click Board™ driver. This demo application shows an example of the I2C Isolator 6 Click Board™ wired to the I2C Isolator 6 Click Board™ or reading device ID. The library also includes an I2C writing and reading functions.
void application_task ( void )
{
static uint8_t device_id = 0;
static uint8_t reg = ACCEL21_REG_WHO_AM_I;
if ( I2CISOLATOR6_OK == i2cisolator6_write_then_read( &i2cisolator6, ®, 1, &device_id, 1 ) )
{
if ( ACCEL21_DEVICE_ID == device_id )
{
log_printf( &logger, " Device ID: 0x%.2Xrn", ( uint16_t ) device_id );
log_printf( &logger, "---------------------rn" );
}
}
Delay_ms( 1000 );
}
The full application code, and ready to use projects can be installed directly from NECTO Studio The package Manager (recommended), downloaded from our LibStock™ or found on MikroE Github account.
Other MikroE Libraries used in the example:
- MikroSDK.Board
- MikroSDK.Log
- Click.I2CIsolator6
Additional Notes and Information
Depending on the development board you are using, you may need USB UART Click Board™, USB UART 2 Click or RS232 Click to connect to your PC, for development systems with no UART to USB interface available on the board. UART terminal is available in all MikroE compilers.
MIKROSDK
The I2C Isolator 6 Click Board™ is supported with mikroSDK - MikroE Software Development Kit, which needs to be downloaded from the LibStock and installed for the compiler you are using to ensure proper operation of mikroSDK compliant Click board™ demo applications.
Frequently Asked Questions
Ask a Question-
What is the maximum isolation voltage provided by the ADUM2250?
The ADUM2250 provides a maximum isolation voltage of 5kVRMS.
-
Does the I2C Isolator 6 Click Board™ require splitting I2C signals into separate transmit and receive signals for use with standalone optocouplers?
No, the I2C Isolator 6 Click Board™ eliminates the need for splitting I2C signals into separate transmit and receive signals for use with standalone optocouplers.
-
What is the data rate supported by the ADUM2250?
The ADUM2250 supports data rates from DC up to 1MHz.
-
What are the benefits of using the I2C Isolator 6 Click Board™?
The I2C Isolator 6 Click Board™ offers completely isolated bidirectional communication, simplifies software development with the mikroSDK compliant library, and comes as a fully tested product that is ready to be used on a system equipped with the mikroBUS™ socket.
-
What is the ADUM2250?
The ADUM2250 is a two-channel, 5kVRMS I2C digital isolator from Analog Devices that provides two bidirectional channels and supports a completely isolated I2C interface. It eliminates the need for splitting I2C signals into separate transmit and receive signals for use with standalone optocouplers. It supports data rates from DC up to 1MHz and has hot swap circuitry to prevent data glitches.
-
What is the I2C Isolator 6 Click Board™?
The I2C Isolator 6 Click Board™ is a compact add-on board that provides completely isolated bidirectional communication. It is designed to transfer digital signals between circuits with different power domains at ambient temperatures.