I2C DMX Receiver

Description

The IS3710 is a chip that performs one job, does it extremely well, and is super easy to use (you don’t need any libraries — we love the KISS principle). It receives DMX frames and stores each DMX channel into its memory.

The chip has two ports:

• An I2C interface that connects to your microcontroller, FPGA, Arduino, Raspberry Pi, etc. This is where you retrieve the DMX data.
• A UART input that connects to your favorite RS485 transceiver. This is where the DMX data arrives from the RS485 transceiver.

The chip’s internal memory consists of 512 registers, mapped like this:

• Register 1 → DMX Channel 1
• Register 2 → DMX Channel 2
• ...
• Register 512 → DMX Channel 512

Just read the channels you care about via I2C — and you’re good to go.

Advantages & Features

• 🧠 Buffers all 512 DMX channels (a full DMX universe)

• ❌ No libraries needed! Use standard I2C functions

• 🛠️ Forget about DMX protocol handling

  • No need to deal with frame parsing, timings, or UART interrupts

  • Save engineering time and focus on what makes your project unique

• 🧘 Reduces CPU load

  • No timer or UART overhead

  • Great for non-deterministic systems (like Raspberry Pi and single board computers)

  • Perfect for heavily loaded CPUs or ISR-heavy applications

• 🔌 Saves I/O pins

• Uses I2C instead of UART. As I2C is a shared bus, no dedicated pins are scarified.

• Ideal for pin-limited designs.

• 🔄 I2C interface

  • Compatible with 3.3V and 5V systems
  • Works at 100kHz, 400kHz, and 1MHz

• 🔁 UART interface

• 3.3V and 5V tolerant

• 🧷 Easy-to-solder SO8N package

• 🧪 Evaluation board available

• 🚀 Speeds up development

  • Faster prototyping
  • Shorter time-to-market

  • Ideal for FPGAs designs

• 🛠️ Reels available for pick-and-place machines