I am attempting to make a shield to program my 64KB eeprom module (27SF512- datasheet at http://www.moates.net/zips/27SF512.pdf ). I am using three 74HC595 chips to shift out the 16 bit address and the 8 data bits. All of the logic is fine at 5V, except part of the programming protocol requires me to…

Driving 12V signal from 5V pin

system July 29, 2011, 8:44pm 12

@Grumpy Mike
Agreed. His question appears to be more complex than I originally thought that it was.

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