How to interface flash and LCD without using level converter

[mystery]

MSP and 5V

Hi all

I want to interface MSP430F149 with a 5V flash memory (AMD29F010) and a graphic LCD. boths supply is 5V . How can I interface this flash and LCD without using a level converter.

thanks for your future response

 

[mitesh]

MSP430F149 interfcae with 5V

U can connect 5volts device with MSP 430F149 with pullup resistor, I have integrated 5v 20*4 LCD and GPS receiver to MSP430F148

 

[eltonjohn]

ARE TOU SHURE???

I did A DESIGN not LONG AGO using a MSP430F1101
and ANOTHER with MSP430F413 and yes my LCD was also 5v

I burned both chips when i tried tu pull'em up at 5V..

I couldn't programme them any more ...
once i designed just using 3v no more problems

the data sheet specifies a VOH por the Output ports MAX = VCC
and the VCC MAX = 3.6 .. some place i read that they will withstand 4.1 Volt .. and to get a BETTER contrast in my LCD (5 volt) i had supplied the chip with 3,9 v ..and no damage ... There is an APP NOTE on how to
interface those chips to 5V.. But they don't mention 5v pull ups ..

don't do it

 

[andre_luis]

Re: ARE TOU SHURE???

some 24Cxx flash memories accept 2,2v up to 5,5v supply. Try use that

 

[gorkin]

Re: MSP and 5V

I think the use of Dual Supply Translators is the best choice for Your design. Check in:
**broken link removed**

and see what device is best for Your design requeriments!

Gorkin

 

[vaibhav.k]

MSP and 5V

Level translators are available from various semiconductor manufacturer which will convert 3.3V to 5volt and vice versa.Also u can use any CMOS buffer with supply 5Volt that will solve u r problem.