MCUmall EPROM BIOS Chip Burner Forum Active Users: / Visits Today:
Highest Active Users:
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
 Using The Enhanced/Dual power Willem Programmer
 VPP= 11.93		  Forum Locked
 Printer Friendly
Author Previous Topic Topic Next Topic  

Max

USA
3 Posts
Posted - 01/12/2005 :  09:05:58  Show Profile
I have an enhanced willem usb powered and I'm trying to program a PIC16F84A.
I'm able to read and write other chips I've tried so my hardware and pc settings should be correct. I dl'd weptest.exe and checked the voltage on pin 4, PIC socket and I show 11.93 volts. According to the
PIC data sheet it needs to be between 12 and 15 volts. According to the doc that came with weptest it says that "R12 on the component drawing says r12=10k this should be 100K".
And when I downloaded the latest software it had an updated HW fix enclosed requiring two pull-up resistors (10k) to SELIN and AUTO.
Anyone aware of this and if it might have an effect on what I'm doing?
Max
Reply #1

usb

138 Posts
Posted - 01/12/2005 :  16:58:59  Show Profile
All voltage will have some tolerance, eg. 5% - 10%.

The 11.93V will be considered as 12V. Your multimeter has the tolerance too.
Edited by - usb on 01/12/2005 17:00:11
Go to Top of Page
Reply #2

eartwoonrolt

United Kingdom
3 Posts
Posted - 01/14/2005 :  18:08:13  Show Profile
just out of interest do you get an id on the 16f84a?
Go to Top of Page
  Previous Topic Topic Next Topic  
 Forum Locked
 Printer Friendly
Jump To:
MCUmall EPROM BIOS Chip Burner Forum © Copyright 2003 - 2009 Mcumall Electronics Inc. Go To Top Of Page
Generated in 0.07 sec. Snitz Forums 2000