MCUmall EPROM BIOS Chip Burner Forum
MCUmall EPROM BIOS Chip Burner Forum
Home | Profile | Register | Active Topics | Members | Search | FAQ
Username:
Password:
Save Password
Forgot your Password?

 All Forums
 MCUmall Forums
 TOP USB Programmer
 TOP2005 & PIC16F84A
 New Topic  Reply to Topic
 Printer Friendly
Author Previous Topic Topic Next Topic  

Adil

Azerbaijan
2 Posts

Posted - 05/09/2008 :  09:59:43  Show Profile  Reply with Quote
Hello.

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?

Thanks.
Reply #1

Adil

Azerbaijan
2 Posts

Posted - 05/14/2008 :  09:45:12  Show Profile  Reply with Quote
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
Go to Top of Page
  Previous Topic Topic Next Topic  
 New Topic  Reply to Topic
 Printer Friendly
Jump To:
MCUmall EPROM BIOS Chip Burner Forum © Copyright 2003 - 2009 Mcumall Electronics Inc. Go To Top Of Page
Generated in 0.14 sec. Snitz Forums 2000