topic LPCxpresso board connecting question in LPCXpresso IDE

LPCxpresso board connecting question

lpcware — Wed, 15 Jun 2016 22:11:31 GMT

Content originally posted in LPCWare by sojiro on Tue Jun 29 12:32:44 MST 2010
I will soon get my hands on one lpsxpresso board (lpc1343)
I have to connect it with a camera that runs at 5V

Can i power my cam from board?
In case i power my cam externally i have to connect both grounds right?
And use resistors in order to lower power at pins at 3.2V right?

Re: LPCxpresso board connecting question

lpcware — Wed, 15 Jun 2016 22:11:32 GMT

Content originally posted in LPCWare by leon_heller on Tue Jun 29 13:18:34 MST 2010
The LPC1343 has 5V-tolerant I/Os. You might need level conversion, it depends on the camera signals.

Re: LPCxpresso board connecting question

lpcware — Wed, 15 Jun 2016 22:11:32 GMT

Content originally posted in LPCWare by sojiro on Tue Jun 29 14:12:53 MST 2010
Hey,

Nice to see you here too

What does this mean?

Quote:
5 V tolerant I/O pins; only valid when the VDD supply voltage is
present

That i should provide power supply not just input/output?

I don't like living on the edge i will still use some conversion

What about the GND i mentioned?

:)

Re: LPCxpresso board connecting question

lpcware — Wed, 15 Jun 2016 22:11:33 GMT

Content originally posted in LPCWare by kevink on Tue Jun 29 14:25:26 MST 2010

Quote: sojiro

What about the GND i mentioned?
:)

Yes, you need to connect the grounds together.

Re: LPCxpresso board connecting question

lpcware — Wed, 15 Jun 2016 22:11:33 GMT

Content originally posted in LPCWare by leon_heller on Tue Jun 29 19:57:07 MST 2010

Quote: sojiro
Hey,

Nice to see you here too

What does this mean?

That i should provide power supply not just input/output?

I don't like living on the edge i will still use some conversion

What about the GND i mentioned?

:)

Yes, it's the same with most chips - they don't like voltages on the inputs unless they are powered.