I2C Isolator 2 click

I2C Isolator 2 click provides I2C lines and power isolation for slave devices. It carries the ADM3260 dual I2C isolator with an integrated DC-to-DC converter, from Analog Devices. I2C Isolator 2 click is designed to run on either 3.3V or 5V power supply. The click communicates with the target microcontroller over an I2C interface with additional functionality provided by the PWM pin on the mikroBUS™ line.

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

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

Buttons and LEDs

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