|T O P I C R E V I E W
||Posted - 05/09/2008 : 09:59:43
I am beginner on electronics. I am trying to program PIC16F84A using TOPWIN2005 USB programmer.
I have made simple schema for flashing one led.(4MHz crystal).
Now I want to program it. But it asks me about FOSC1,FOSC2,WDTEN,PWRITE, and many CPs.
What I must do? Which of them I must check?
|1 L A T E S T R E P L I E S (Newest First)
||Posted - 05/14/2008 : 09:45:12
I understand after looking datasheet of PIC16F84A.
bit 13-4 CP: Code Protection bit
1 = Code protection disabled
0 = All program memory is code protected
bit 3 PWRTE: Power-up Timer Enable bit
1 = Power-up Timer is disabled
0 = Power-up Timer is enabled
bit 2 WDTE: Watchdog Timer Enable bit
1 = WDT enabled
0 = WDT disabled
bit 1-0 FOSC1:FOSC0: Oscillator Selection bits
11 = RC oscillator
10 = HS oscillator
01 = XT oscillator
00 = LP oscillator
For external crystal must be set RC(11-FOSC1 and FOSC2 must be checked.)For HS FOSC1 must checked and FOSC2 must be unchecked and so. :)
Now my blinking led works very well