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IIC/SPI

SARAVANAN KANNAN over 16 years ago

Dear friends,

Can Anyone help me on the IIC communications. I am using 50 terminals of microcontroller (P89LPC936)8051 base. I don't know how to communicate with each of them. pls help me.

Thanks,

K. Saravanan

0 Andy Neil over 16 years ago

I2C was invented by Philips - now NXP - and they still own it.
Therefore, NXP must be your starting point - including the full I2C Specification:

www.standardics.nxp.com/.../

Keil also has a page about it: http://www.keil.com/i2c/

See the P89LPC936 Product Info Page (PIP) for specific details: www.nxp.com/.../P89LPC933_934_935_936_6.html

And there is, of course, tons of information all over the web - so fire-up your favourite internet search engine...
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0 Andy Neil over 16 years ago

How far apart are they?

Note that I2C was designed for connections between ICs on the same circuit board - not really for interconnections between equipments.

Note also that there are limits to the maximum capacitance on the bus...
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0 SARAVANAN KANNAN over 16 years ago in reply to Andy Neil

HI each of them are 1 meter far.
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