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2005-09-20 by vineet jain
Hello, Can I connect any TTL chip working at 5V to the LPC2104 GPIO's??? Regards, Vineet. __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com [Non-text portions of this message have been removed]
2005-09-20 by fbpmania
--- In lpc2000@yahoogroups.com, vineet jain <vineetrvce@y...> wrote: > Hello, > Can I connect any TTL chip working at 5V to the LPC2104 GPIO's??? > > Regards, > Vineet. > > > > __________________________________________________ > Do You Yahoo!? > Tired of spam? Yahoo! Mail has the best spam protection around > http://mail.yahoo.com > > [Non-text portions of this message have been removed] > Hello Vineet, this depends on your TTL Chip. Check your Datasheet what your IC will interprete als "high". There is always a min. Voltage given. Greetings.
2005-09-20 by Karl Olsen
--- In lpc2000@yahoogroups.com, vineet jain <vineetrvce@y...> wrote: > Hello, > Can I connect any TTL chip working at 5V to the LPC2104 GPIO's??? Chips that use TTL levels can be connected directly. Karl Olsen
2005-09-20 by Blagoj Kupev
Be aware that external TTL chip has to be powered from +5V. You can use 74HCT versions without any problem. This way you can connect GPIO's only if it is configured as output (connected to 74HCT input), but if you want to use TTL output connected to GPIO configured as input, check if your processor has 5V tolerant inputs. BR, Blagoj Kupev Na 20.09.2005 12:04 Karl Olsen rece:
>--- In lpc2000@yahoogroups.com, vineet jain <vineetrvce@y...> wrote: > > >>Hello, >> Can I connect any TTL chip working at 5V to the LPC2104 GPIO's??? >> >> > >Chips that use TTL levels can be connected directly. > >Karl Olsen > > > > > > > >Yahoo! Groups Links > > > > > > > > >__________ NOD32 1.1224 (20050920) Information __________ > >This message was checked by NOD32 antivirus system. >http://www.eset.com > > > > >