2.7 to 5V level shifting

Mar 11, 2007 3 Replies
R

Dear all Looking for a simple way to interface 2.7V Flash Mmeory to a 5V uC. The various peripherals in the system are 5V (LCD module, programming interface, sensors) so it seems easiest to interface the memory. There doesnt seem to be a serial flash available in 5V. Lots of parallel flash devices at 5V but these are old and take too many lines



One line will have to be bidirectional



Thanks



Richard


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L

There are plenty of multi-bit buffer that include level converters that'll handle 2.7V to 5V. How many bits do you need to convert to 5V?

W "Some people are alive only because it is illegal to kill them." . | ,. w , \\|/ \\|/ Perna condita delenda est ---^----^---------------------------------------------------------------
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R

Re the LCD module - it may be worth a second look at the data sheet. I'm pretty sure that some have 3v compatible logic i/o despite the 5V supply.

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SN74LVC8T245

Uwe Bonnes bon@elektron.ikp.physik.tu-darmstadt.de Institut fuer Kernphysik Schlossgartenstrasse 9 64289 Darmstadt --------- Tel. 06151 162516 -------- Fax. 06151 164321 ----------
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