Thanks for the reply, Vasile. I hope a 5V pin compatible part is available. That would sure make things easier. ----- Original Message ----- From: "Vasile Surducan" To: "Microcontroller discussion list - Public." Sent: Saturday, January 20, 2007 4:52 AM Subject: Re: EE: A dumb mistake. > Lifting up the EEPROM VCC pin and connecting a 0402 SMD resistor > between the pin and the 5V circuit and a standard two terminals 3.3V > zenner between Vcc and GND of the EEprom's SO package looks also > good. > It's not a big deal Rich, but the same amount of work (or less) will > be desoldering and replacing the part. > > Vasile > > On 1/20/07, Rich wrote: >> Hi guys: >> I stupidly put 5 volts to a 3.3 volt part. I missed it in the checking >> and the PCB is fabbed. I thought of lifting the pin (can't cut the trace >> because it is an internal layer) and knocking down the voltage with a >> zener glue-on. I hope the zener impedance will be low enough. The part >> is an EEPROM. Has anyone had any experience with this type of fix? I >> will get new boards for production but I don't want to spring for another >> 300 bucks for a test board. I confess to stupid things from time to >> time. >> -- >> http://www.piclist.com PIC/SX FAQ & list archive >> View/change your membership options at >> http://mailman.mit.edu/mailman/listinfo/piclist >> > -- > http://www.piclist.com PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist > -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist