Searching \ for ' [PIC] ISP of PIC16F877 using Warp13 Prog' in subject line. ()
Make payments with PayPal - it's fast, free and secure! Help us get a faster server
FAQ page: www.piclist.com/techref/microchip/devices.htm?key=16F
Search entire site for: 'ISP of PIC16F877 using Warp13 Prog'.

No exact or substring matches. trying for part
PICList Thread
'[PICLIST] [PIC] ISP of PIC16F877 using Warp13 Prog'
2002\01\06@233200 by Donovan Parks

flavicon
face
Hello,

I have a Newfoundland Electronics Warp13 programmer and would like to program my PIC16F877 using the ISP feature of the programmer and chip.

The help file for the Warp13 is not entirely clear on how to correctly isolate the pins used in ISP.  RB6 and RB7 are not being used in my application so these are easy (as is ground), but I am uncertain as to what 'isolation' circuits I should be using on Vpp(/MCLR) and Vdd.  The help file suggests either a diode or resistor on Vpp(/MCLR) - what is better? why? what value of resistor?  I am at a loss at how to isolate Vdd.  
Also, am I correct that my programmer will supply all power needed to do ISP (or should I be supplying +5V to the PIC)?

Thanks for any and all help.

Donovan

--
http://www.piclist.com hint: To leave the PICList
spam_OUTpiclist-unsubscribe-requestTakeThisOuTspammitvma.mit.edu


2002\01\06@234427 by Al Williams

flavicon
face
Read the appropriate section of
http://www.microchip.com/download/tools/picmicro/program/icsp/30277c.pdf

Al Williams
AWC
* Floating point A/D
http://www.al-williams.com/awce/pak9.htm


> {Original Message removed}

2002\01\07@042651 by Peter Anderson

picon face
+ 5VDC ----- 10K -------->|------- Term 1

When Vpp is applied to term 1, the diode is reverse
biased.

You do have to power the PIC during the programming.

Peter H Anderson, http://www.phanderson.com
WARP13 Reseller

--- Donovan Parks <.....dparksKILLspamspam@spam@UVIC.CA> wrote:
{Quote hidden}

__________________________________________________
Do You Yahoo!?
Send FREE video emails in Yahoo! Mail!
http://promo.yahoo.com/videomail/

--
http://www.piclist.com hint: PICList Posts must start with ONE topic:
[PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads


2002\01\07@081521 by x

flavicon
face
Hi Donovan,

my solution is to employ a 2-line by 5-pin header. One line is connected
to the PIC, the other line is to Your application. When the circuit is
in use, 5 jumpers are put on the headers. When programming, the 5
jumpers removed and the ICSP cable is plugged onto the appropriate line.

This works for me without any problems.

One more development to this: use a 6 pole header, the 6th pole is
connected to OSC1 and the nearby pin (the 5th) is GND in this case. When
you plug on the ICSP cable, it shorts OSC1 to GND, thus, oscillator
won't start, there's no problem with slow Vpp rise.

Your programmer will supply all the voltages during programming.

This "jumper" solution is the only rock-solid solution I could find out,
because the programmer doesn't like to see any capacitors on the pins it
handles.

Sincerely:
Bela

--
http://www.piclist.com hint: PICList Posts must start with ONE topic:
[PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads


2002\01\07@090032 by Edson Brusque

face
flavicon
face
Hello Al Williams,

> Read the appropriate section of
> http://www.microchip.com/download/tools/picmicro/program/icsp/30277c.pdf

   I never found this very clear. The only relevant information I can find
on "ICSP Guide" says that the max rise time from VSS to VIHH for test mode
entry have to be bellow 8ms.

   Where can I find the exact maximum values? Isn't it dependant of clock?
If I have a PIC already running, raising the VIHH voltage to 13 pins would
make it stop or reset?

   Best regards,

   Brusque

-----------------------------------
Edson Brusque
Research and Development
C.I.Tronics Lighting Designers Ltda
Blumenau  -  SC  -  Brazil
http://www.citronics.com.br
-----------------------------------

--
http://www.piclist.com hint: PICList Posts must start with ONE topic:
[PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads


2002\01\07@165730 by uter van ooijen & floortje hanneman

picon face
>     Where can I find the exact maximum values? Isn't it dependant of
clock?

Yes it is.

> If I have a PIC already running, raising the VIHH voltage to 13 pins would
> make it stop or reset?

It would enter an non-defined mode where you can probably screw up your
program.

Wouter van Ooijen

Van Ooijen Technische Informatica: http://www.voti.nl
Jal compiler for PIC uC's:  http://www.voti.nl/jal
PICs kopen? http://www.voti.nl/shop

--
http://www.piclist.com hint: PICList Posts must start with ONE topic:
[PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads


2002\01\07@173132 by Josh Koffman

flavicon
face
I thought the WARP13 applied power to the device under programming
through the ICSP header? I'm about to build an ICSP cable, so this is
quite timely :)

Josh

{Quote hidden}

--
A common mistake that people make when trying to design something
completely foolproof is to underestimate the ingenuity of complete
fools.
       -Douglas Adams

--
http://www.piclist.com hint: PICList Posts must start with ONE topic:
[PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads


2002\01\07@173506 by Josh Koffman

flavicon
face
Ahem...I sent too soon. Another question I have about ICSP is how do I
deal with it on the 16f628 and the MCLR? In my current project I'm not
anticipating any problems as MCLR is set as digital i/o and not used, so
I should just be able to hook it right up to the ICSP with no problems.
But in the future, should I design in breakable connections like on the
RB6 and RB7? Again, in my current project, none of the ICSP pins are in
use (other than +5v and GND), so what would happen if I left the ICSP
cable attached while I ran the circuit? Would it damage the circuit or
the programmer?

Josh
--
A common mistake that people make when trying to design something
completely foolproof is to underestimate the ingenuity of complete
fools.
       -Douglas Adams

Peter Anderson wrote:
{Quote hidden}

--
http://www.piclist.com hint: PICList Posts must start with ONE topic:
[PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads


More... (looser matching)
- Last day of these posts
- In 2002 , 2003 only
- Today
- New search...