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Discussion Groups | Piclist | PIC 16F877A problems...
A discussion group for the PICMicro microcontroller. Also called the Microchip PIC, this list is dedicated to the use and abuse of this fine, simple, microcontroller. Close to topic posts are welcome, ie. general electronics.
PIC 16F877A problems... - shet...@gmail.com - Jan 11 18:10:59 2008
I'm trying to get PIC 16F877A to work with a 20Mhz crystal. I'm a beginner with PIC, tho i
have decent exp with other controllers.
i'm having problems trying to get it to work. If i understand correctly, the crystal needs to be connected between osc1 and osc2 pins with caps to ground. I'm using hi-tech's PICC and tide to compile and assemble the program, which i then burn to the chip. the program i'm trying to run is nothin much, jus tryin to light 8 leds on portb(PORTB = 0b10101010) and toggle their state at every timer interrupt. but all i get is a 3.68V on all the portB pins. also i tried checking the voltage at the osc1 and osc2 pins, i have .9V on thm.
I'v read in one of the other posts tht the free samples from microchip sometimes run only up2 4Mhz, and we shud check the part no. well, the sample tht i'v got is
"PIC16F877A
07312FG"
does this mean tht the sample will only work upto 12mhz?? or is there somethin else i might be rong at... any suggestions???
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i'm having problems trying to get it to work. If i understand correctly, the crystal needs to be connected between osc1 and osc2 pins with caps to ground. I'm using hi-tech's PICC and tide to compile and assemble the program, which i then burn to the chip. the program i'm trying to run is nothin much, jus tryin to light 8 leds on portb(PORTB = 0b10101010) and toggle their state at every timer interrupt. but all i get is a 3.68V on all the portB pins. also i tried checking the voltage at the osc1 and osc2 pins, i have .9V on thm.
I'v read in one of the other posts tht the free samples from microchip sometimes run only up2 4Mhz, and we shud check the part no. well, the sample tht i'v got is
"PIC16F877A
07312FG"
does this mean tht the sample will only work upto 12mhz?? or is there somethin else i might be rong at... any suggestions???
to unsubscribe, go to http://www.yahoogroups.com and follow the instructions
(You need to be a member of piclist -- send a blank email to piclist-subscribe@yahoogroups.com )