Monthly Archives January 2014

How to drive 5V inputs from 3.3 V microcontroller with 5V tolerant inputs

Recently I bought a serial graphical LCD from Ebay. I thought I’ve checked everything before buying it, but I was wrong!  When they arrived I realized I’ve bought the 5V version  instead of 3.3V version. I was going to use PIC 18F46J50 for my project but it was a 3.3V microcontroller. Then I found a neat trick (which was actually from the datasheet of PIC 18F46J50) which uses 5.5V input capable pins of PIC18F46J50  to drive the 5V inputs . This article is all about this cool technique. To use this technique you should find pins which has the capability
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