On 4/23/07, Xiaofan Chen wrote: > On 4/23/07, Phillip Coiner wrote: > > > I copied the interface of my circuit from the schematic of a PICDEM 2 PLUS > > development board from Microchip so that is how I ended up with the cap on > > VPP. > > Do you (or anyone else out there) have any idea why Microchip puts a 10nF on > > VPP?? I'm wondering if I should remove it from the 16F676 design as well?? > > > > I think a lot of the design has a 10nF (I've even seen 100nF) capacitors on > the MCLR/Vpp pin for EMC reasons. I think on MCLR the capacitor purpose it's different than Electro Magnetic Compatibility...jut for resetting at power up. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist