Post by thread:[PIC]: reset button

How do I set a push button reset on a 16f84 ? Button to resistor to gnd hooked to pin 4 ? Keith __________________________________________________ Do You Yahoo!? Send FREE video emails in Yahoo! Mail! http://promo.yahoo.com/videomail/ -- http://www.piclist.com hint: To leave the PICList spam_OUTpiclist-unsubscribe-requestTakeThisOuTmitvma.mit.edu

Button between pin 4 and ground when pressed. Resistor to Vcc hooked to pin 4. Gives you a 'warm boot': your code will have to init registers like a cold boot if you need that. /\/\/\/*=Martin {Original Message removed}

button to gnd from MCLR, 10k to vcc from the same mclr On Mon, 21 Jan 2002, Keith Christopher wrote: {Quote hidden}> How do I set a push button reset on a 16f84 ? > > Button to resistor to gnd hooked to pin 4 ? > > > > Keith > > __________________________________________________ > Do You Yahoo!? > Send FREE video emails in Yahoo! Mail! > http://promo.yahoo.com/videomail/ > > -- > http://www.piclist.com hint: To leave the PICList > .....piclist-unsubscribe-requestKILLspam@spam@mitvma.mit.edu > > -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads

220 ohm current limiting resistor from MCLR first of all From the free end of the 220R - 10k to Vcc Button + 100R to 0V 10nF to 0V (ie in parallel with the button and the 100R) The 10nF + 10k to Vcc provides some noise filtering and also ensures that MCLR stays low for a short time after Vcc goes high at power-up You can also add a small diode in parallel with the 10k, with the cathode (stripe end) to Vcc. This is a discharge path for the 10nF at power-down -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads