Ed Frederick

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10 years, 11 months ago.

Parallel devices

How do I connect external devices that require D0-D7 /CS /RD /WR to a LPC1768 ? I have the LPCXpresso LPC1768 rev.c board.

How fast does it need to be? While I guess those others do have real busses, you can also do alot using GPIO.

posted by Erik - 17 Oct 2014

1 Answer

Andy A
10 years, 11 months ago.

Short answer: Not easily.

The 1768 doesn't support external parallel components.

The 177x and 178x products do but not the 176x parts.

You could still access a parallel device using GPIO but it will be slow and not memory mapped.

Accepted Answer

Are there development boards for either of these at low cost?

posted by Ed Frederick 17 Oct 2014

Not that I know of. The LPC4088 has a parallel bus but the only mbed device using that part doesn't make the pins available, they are used for some SDRAM. There are lots of non-mbed eval boards for those parts but again they tend to use the bus for memory rather than bringing it to headers.

posted by Andy A 17 Oct 2014