I2C Isolator 2 click
- Order number: MIKROE-2609
- Manufacturer product ID: MIKROE-2609
ADM3260 features
The ADM3260 is a hot swappable digital and power isolator with two nonlatching, bidirectional communication channels, supporting a complete isolated I2C interface, and an integrated isolated dc-to-dc converter, supporting up to 150 mW of isolated power conversion.
The bidirectional I2C channels eliminate the need for splitting I2C signals into separate transmit and receive signals for use with standalone optocouplers.
How it works
The screw terminal on the board can be connected to I2C and power connections of an I2C slave device.
Specifications
| Type | Isolator |
| Applications | Isolated I2C, SMBus, and PMBus interfaces, multilevel I2C interfaces, central office switching, telecommunication and data communication equipment, etc |
| On-board modules | ADM3260 dual I2C isolator |
| Key Features | up to 150 mW output power |
| Key Benefits | integrated DC-to-DC converter |
| Interface | GPIO,I2C |
| Peripherals include | two pars of screw terminals |
| Input Voltage | 5V,5V |
| Compatibility | mikroBUS |
| Click board size | M (42.9 x 25.4 mm) |
Pinout diagram
This table shows how the pinout on I2C Isolator 2 click 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 | PDIS | Power disable | |
| NC | 2 | RST | INT | 15 | NC | ||
| NC | 3 | CS | TX | 14 | NC | ||
| NC | 4 | SCK | RX | 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 |
Jumpers and Settings
| Designator | Name | Default Position | Default Option | Description |
|---|---|---|---|---|
| JP1 | VIO SEL. | Left | 3V3 | Power Supply Voltage Selection 3V3/5V, left position 3V3, right position 5V |
| JP2 | VIO ISO | Left | 3V3 | Isolated Power Supply Voltage Selection 3V3/5V, left position 3V3, right position 5V |
Buttons and LEDs
| Designator | Name | Type | Description |
|---|---|---|---|
| CN1 | SCREW TERMINAL | VCC, GND isolated connection. | |
| CN2 | SCREW TERMINAL | SCL SDA isolated connection |
Programming
Code snippet
The following code snippet is an example of a read sequence using I2C.
1 I2C1_Start(); // issue I2C start signal 2 I2C1_Wr(0xA2); // send byte via I2C (device address + W) 3 I2C1_Wr(2); // send byte (data address) 4 I2C1_Repeated_Start(); // issue I2C signal repeated start 5 I2C1_Wr(0xA3); // send byte (device address + R) 6 LATB = I2C1_Rd(0); // Read the data (NO acknowledge) 7 I2C1_Stop(); // issue I2C stop signal