topic Re: difference between FIODIR & IODIR in LPC Microcontrollers

difference between FIODIR & IODIR

lpcware — Wed, 15 Jun 2016 16:42:18 GMT

Content originally posted in LPCWare by moslem1368 on Sun Dec 02 02:59:49 MST 2012
Hi
What is difference between FIODIR & IODIR Reg. in lpc21xx in Aplication?

Re: difference between FIODIR & IODIR

lpcware — Wed, 15 Jun 2016 16:42:18 GMT

Content originally posted in LPCWare by omid.azadeh on Mon Apr 08 01:43:57 MST 2013

FIODIR -> Fast Input/Output Direction

IODIR -> Normally Input/Output Direction

Re: difference between FIODIR & IODIR

lpcware — Wed, 15 Jun 2016 16:42:19 GMT

Content originally posted in LPCWare by embd02161991 on Thu Aug 15 15:50:45 MST 2013
Hi,

FIODIR refers to Fast Input/Output Direction control register and IODIR refers to Input/Output Direction control register. The purpose of FIO is basically application oriented. In case you have a external memory running at high frequencies and you want to communicate with it. Here, FIO's are better than IO's as they are faster.

Thanks,
SK