At 06:08 AM 10/5/01 +0200, you wrote:
>Does anyone one how many bytes/sec can be sent using I2C on a 20Mhz
>processor?  I want to be able to send data and recieve data as fast as
>possible, howere, UART is too slow.  I will be using SRAM with I2C
>interface to storing and retrieving large amounts of data, in the order
>of 5 or 10 Megabyte of storeage. If not more.

SPI is faster. There are two speeds of I2C- 100K and 400K, IIRC.
That's bits per second, plus there is framing and address and instruction
information with contribute to the overhead. If the data is
sequential you may be able to get at it about twice as fast, again
depending on what you are talking to.

So, slow I2C is in the same league as a UART at 115 kilobaud.

Best regards,
Spehro Pefhany --"it's the network..."            "The Journey is the reward"
speff@interlog.com             Info for manufacturers: http://www.trexon.com
Embedded software/hardware/analog  Info for designers:  http://www.speff.com
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