I2C Fast-mode Plus

NXP's new I²C Fast-mode Plus (Fm+) devices go from zero to 1 MHz so you can go to the next design level with higher data rates. In computing, telecom and networking systems architecture the trend is for greater use of I²C-bus as a maintenance and control bus.

There are also more devices that have some type of embedded intelligence, like PMBus power supplies. Our new Fm+ devices help support these trends, allowing you to create more flexible and larger system designs.

Fm+ uses the same exact software that is used in the Standard-mode and Fast-mode. The tolerances have been tightened on the devices to allow operation up to 1 MHz and the SCL/SDA drive strength was increased by a factor of 10 so you can use more capacitive buses.

Beyond that, our new Fm+ devices are specifically geared towards the latest advances in LED architectural and gaming applications. Designed to be forward-looking, easy-to-implement solutions, they're another industry first from the I²C inventor.

Key features

• 1 MHz I²C-bus serial interface
• Fully compatible with Standard- and Fast-mode software
• SCL/SDA drive strength increased by a factor of 10 to 30 mA

Key benefits

• Place more devices on the same bus without using bus buffers
• Enables longer transmission distances so devices can be used off board, between equipment racks or even across the building
• Easy drop-in replacements for existing Standard- and Fast-mode devices

Key applications

• Servers
• Industrial control
• Medical equipment
• Cell phones
• Instrumentation and text measurement

Related links

Philips leads I²C innovation with industry's first Fast-mode Plus devices
I²C-bus specification, Version 2.1
I²C-bus specification, Version 3.0 - this new release, which includes the Fast-mode Plus technical information, is expected to be finalized by the middle of 2006.

I²C I/O expanders
I²C LED controllers
I²C Bus controllers

Product overview

The first products capable of operating in NXP I²C Fast-mode Plus are available.

Advanced 40-bit Fm+ I²C-bus I/O expander PCA9698
4-bit Fm+ I²C LED controller optimized for RGBA color mixing PCA9633
8-bit Fm+ I²C LED controller optimized for RGBA color mixing PCA9634
16-bit Fm+ I²C LED controller optimized for RGBA color mixing PCA9635
Fast-mode Plus parallel bus to Fm+ I²C-bus controller PCA9665

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