Email: Password: Remember Me | Create Account (Free)

Back to Subject List

Old thread has been locked -- no new posts accepted in this thread
Jim Granville
03/13/13 15:06
Read: 961 times


 
#189565 - as always, it depends
Responding to: Erik Malund's previous message
Erik Malund said:

I believe that for hardware I²C implementations the requirement to specify a slave clock frequency is superfluous.


You do not usually need to specify an operate speed, but it is common to specify a maximum speed, and there, that can be lower than one might think.
I recall a Philips part that used a 455KHz ceramic resonator, and somehow they manged to get that into the slave SPI Hardware, such that the i2c was unreliable above ~75KHz, so the part failed to meet even Philips lowest speed specs...


List of 6 messages in thread
TopicAuthorDate
I think I'm right, but ....      Erik Malund      03/13/13 08:47      
   as always, it depends      Jim Granville      03/13/13 15:06      
      not the driving clock but ....      Erik Malund      03/13/13 16:04      
         yes,,,      Jim Granville      03/13/13 16:46      
   Specifying a slave clock      Oliver Sedlacek      03/18/13 06:35      
      if you could ...      Erik Malund      03/18/13 11:07      

Back to Subject List