An alternative design is also available: SC704

An I2C bus master is a device that can control I2C slave devices on an I2C bus. This makes the module useful for interfacing with external electronics. In this case, the module generates the I2C bus signals using bit-bang code.

The main features of this design are:

• I2C bus master
• LEDs to indicate activity on the SCL and SDA lines
• Simple access using a dedicated I/O port
• Two connections for I2C bus devices
• Supports I2C clock stretching
• Low profile RC2014 style design

Documentation

The documentation can be found at www.scc.me.uk or by following the link below.

Compatibility

This module conforms to the RCBus specification v1.0 for RCBus-2014 standard 40-pin long modules.

The printed circuit board outline conforms to the RC2014 standard for low profile modules.

The module is compatible with all RC2014 backplanes, all RCBus-2014 backplanes (RC2014 compatible including SC100 series) and all full RCBus 80-pin backplanes (including SC700 series).

A similar design SC704 is available in the larger module form factor with a double row bus connector. It is compatible with the RCBus, including the RC2014 standard 40-pin bus, the RC2014 enhanced 60-pin bus and the extended 80-pin RCBus.

The RCBus specification includes RCBus-2014 (both RC2014 standard 40-pin bus and RC2014 enhanced 60-pin bus) and also the full 80-pin RCBus. The 80-pin RCBus provides support for advanced Z80 features, such as the interrupt daisy-chain, as well as support for other processor families.

The Kit

This kit includes all the components needed to make the module, as shown in the first picture. Other modules and backplanes shown in the pictures are not included. You will require tools, solder, and cleaning materials to assemble this kit.

Printed Circuit Board

The printed circuit board is available on its own here.

Related items

SC138 - I2C memory card - Components, spares, and accessories

SC400 series I2C modules

• SC401 - I2C prototyping module
• SC402 - I2C memory module
• SC403 - I2C digital I/O module (MCP23018)
• SC404 - I2C digital I/O module (MCP23008)
• SC405 - I2C digital I/O module (PCF8574)
• SC406 - I2C temperature sensor (TC74)
• SC407 - I2C switches and lights module

Notes

• This product is supplied as a kit of parts that require assembly.
• It is your responsibility to pay any import duty or taxes charged by your home country.
• My products are made in accordance with the "designed for RC2014" labelling scheme.
• RC2014 is a trademark of RFC2795 Ltd.
• This product is designed for hobby use and is not suitable for industrial, commercial, or safety-critical applications.