topic Re: LPC1754 at 3v in LPC Microcontrollers

LPC1754 at 3v

lpcware — Wed, 15 Jun 2016 18:06:52 GMT

Content originally posted in LPCWare by zepedrowdp on Wed May 28 03:58:13 MST 2014
Hey!

I designed my board with a single supply of 3.3v for VDD and VDDreg. The datasheet of the TFT I'm using says that the typical voltage for communication is 2.8v but goes to a max of 3.3v, so I guessed it would work with the 3.3v.

Thing is, I found out that the TFT only works with a voltage of 3v or less, forcing me to supply the whole board with 3v (both for VDD and VDDreg).

So far, the LPC1754 hasn't shown any problems and everything is working correctly.
Although, I must ask: Should I expect any erratic behavior from the microcontroller due to the supply voltage being a bit lower than recomended? Or is it ok as long as it doesn't drop to extremely low values?

Re: LPC1754 at 3v

lpcware — Wed, 15 Jun 2016 18:06:53 GMT

Content originally posted in LPCWare by R2D2 on Wed May 28 04:11:36 MST 2014
LPC17xx datasheet is talking about Vmin of 2.5V :)

So 3V shouldn't cause problems...

Re: LPC1754 at 3v

lpcware — Wed, 15 Jun 2016 18:06:54 GMT

Content originally posted in LPCWare by zepedrowdp on Wed May 28 08:14:46 MST 2014

Quote: R2D2
LPC17xx datasheet is talking about Vmin of 2.5V :)

So 3V shouldn't cause problems...

That's great! Even at 100MHz?

Re: LPC1754 at 3v

lpcware — Wed, 15 Jun 2016 18:06:54 GMT

Content originally posted in LPCWare by mc on Thu May 29 06:56:17 MST 2014
Hi zepedrowpdp,
As spec in the datasheet link below(page 40/79) it works at 3.0 volt.
http://www.nxp.com/documents/data_sheet/LPC1759_58_56_54_52_51.pdf