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'i2c controller question'
1999\08\12@105845 by Panos Kenterlis

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1999\08\12@141502 by Barry King

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> I have already seen the Philips PCF8584 but it only supports a maximum =
> processor bus speed of 12MHz.

The 8584 is the only one I've ever seen.  I researched the part but
have not used it yet.

Can't you force a CPU wait-state on this one peripheral to make it
work?

> BTW can you tell me what is the capacity of an EPROM chip i just found =
> ?? It has the following label on it 27C64A-20 FA (FES5486   8829VD).

27C64 is an EPROM, CMOS, 64 K bits (8K x 8).

> I pressume the access time is 20ns.. am i wrong ??

The 20 usually means 200 nanoseconds access time.

1999\08\14@230348 by Mark Willis

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> Panos Kenterlis wrote:
> <snipped>
> BTW can you tell me what is the capacity of an EPROM chip i just found
> ?? It has the following label on it 27C64A-20 FA (FES5486   8829VD). I
> pressume the access time is 20ns.. am i wrong ??
> <snipped>

 64kbit, i.e. 8 bit x 8k Byte, EPRom.  20nS is incorrect, too, usually
those -20 parts are 200 nS.  (About the fastest EPRoms get is, oh, 45 or
50 nS, that I know of.)  See (for example)
http://www.amd.com/products/nvd/techdocs/11419.pdf for data on AMD's
Am27C64.

 Mark

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