I2C-bus specification and user manual
v.6 20140404 User manual; sixth release
• Figure 41 “Rp(max) as a function of bus capacitance” updated (recalculated)
• Figure 42 “Rp(min) as a function of VDD” updated (recalculated)
v.5 20121009 User manual; fifth release
v.4 20120213 User manual Rev. 4
v.3 20070619 Many of today’s applications require longer buses and/or faster speeds. Fast-mode Plus was
introduced to meet this need by increasing drive strength by as much as 10× and increasing the
data rate to 1 Mbit/s while maintaining downward compatibility to Fast-mode and Standard-mode
speeds and software commands.
Version 2.1 of the I2C-bus specification
The I2C-bus has become a de facto world standard that is now implemented in over 1000 different
ICs and licensed to more than 50 companies. Many of today’s applications, however, require higher
bus speeds and lower supply voltages. This updated version of the I2C-bus specification meets those
Version 1.0 of the I2C-bus specification
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Rev. 6 — 4 April 2014
© NXP Semiconductors N.V. 2014. All rights reserved.
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