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UM10204 Datasheet

I2C-bus specification and user manual

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UM10204
I2C-bus specification and user manual
Rev. 6 — 4 April 2014
User manual
Document information
Info Content
Keywords
I2C, I2C-bus, Standard-mode, Fast-mode, Fast-mode Plus, Fm+,
Ultra Fast-mode, UFm, High Speed, Hs, inter-IC, SDA, SCL, USDA, USCL
Abstract
Philips Semiconductors (now NXP Semiconductors) developed a simple
bidirectional 2-wire bus for efficient inter-IC control. This bus is called the
Inter-IC or I2C-bus. Only two bus lines are required: a serial data line
(SDA) and a serial clock line (SCL). Serial, 8-bit oriented, bidirectional
data transfers can be made at up to 100 kbit/s in the Standard-mode, up to
400 kbit/s in the Fast-mode, up to 1 Mbit/s in the Fast-mode Plus (Fm+), or
up to 3.4 Mbit/s in the High-speed mode. The Ultra Fast-mode is a
uni-directional mode with data transfers of up to 5 Mbit/s.


NXP Semiconductors Electronic Components Datasheet

UM10204 Datasheet

I2C-bus specification and user manual

No Preview Available !

NXP Semiconductors
UM10204
I2C-bus specification and user manual
Revision history
Rev Date
Description
v.6 20140404 User manual; sixth release
Modifications:
Figure 41 “Rp(max) as a function of bus capacitance” updated (recalculated)
Figure 42 “Rp(min) as a function of VDDupdated (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.
v2.1 2000
Version 2.1 of the I2C-bus specification
v2.0 1998
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
requirements.
v1.0 1992
Version 1.0 of the I2C-bus specification
Original 1982
first release
Contact information
For more information, please visit: http://www.nxp.com
For sales office addresses, please send an email to: salesaddresses@nxp.com
UM10204
User manual
All information provided in this document is subject to legal disclaimers.
Rev. 6 — 4 April 2014
© NXP Semiconductors N.V. 2014. All rights reserved.
2 of 64


Part Number UM10204
Description I2C-bus specification and user manual
Maker NXP Semiconductors
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