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Clock Stretching | Cypress Semiconductor

Clock Stretching

Summary: 2 Replies, Latest post by hli on 20 Feb 2013 04:28 PM PST
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user_228878049's picture
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 Whenever a clock stretching happens does Master reduce the bit rate or the clock of the signal or does it stop transmitting the data? and does Clock stretching is a phenomenon observed only with I2c or any other protocols.

user_14586677's picture
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user_78878863's picture
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When (I2C) clock stretching occurs, its the slave doing this, not the master. See the links Danan provided. So basically this is something I2C-specific - the slave can signal to the master that it wants to go slower for some reason.

But actually something similar can occur with other protocols like SPI - but there the master needs to stretch the clock since the slave cannot influence it. (And I have not seen it there in real life yet)

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