Sampei
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 Posted:
Mon Feb 14, 2005 12:47 am Post subject:
Pic ICSP |
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Hi,
I would program PIC16F877A with ICSP.
I used as programmer a jdm based (Pic-PG2 showed
http://www.olimex.com/dev/) and as software ic-prog 1.05C.
I tried a lot of configurations but nothing.
One is showed below:
[FIDOCAD ]
LI 90 55 95 55
LI 95 55 95 60
MC 95 60 1 0 170
MC 95 70 0 0 045
MC 95 35 3 0 010
LI 95 45 95 35
LI 45 45 65 45
LI 65 45 65 75
LI 77 55 77 90
LI 77 90 125 90
MC 95 55 3 0 080
TY 99 31 5 3 0 0 0 * +5
TY 126 88 5 3 0 0 0 * ICSP
SA 95 55
LI 75 55 65 55
TY 45 50 5 3 0 0 0 * /MCLR
MC 90 55 2 0 200
TY 70 50 5 3 0 0 0 * BAT48
TY 100 50 5 3 0 0 0 * 1K
TY 100 60 5 3 0 0 0 * 0.1uF
LI 65 75 65 140
TY 45 40 5 3 0 0 0 * PIC
TY 50 95 5 3 0 0 0 * VDD
TY 50 105 5 3 0 0 0 * VSS
TY 50 115 5 3 0 0 0 * RB7
TY 50 125 5 3 0 0 0 * RB6
LI 65 110 125 110
LI 65 120 125 120
LI 65 130 125 130
TY 125 105 5 3 0 0 0 * ICSP
TY 125 115 5 3 0 0 0 * ICSP
TY 125 125 5 3 0 0 0 * ICSP
MC 95 110 0 0 045
with and without the wire between the two Vdd. Later i proved this jdm
configuration (http://www.jdm.homepage.dk/icsp.htm) but i used as diode
BAT48: nothing.
Now:
1)There is any particular ic-prog setting to program with ICSP?
2)Why during the programming the value of MCLR is 8 volt ?(I know that
it shoud be 13v)
3)Why I must use a Schottky diode?
Thanks to all
--
I have a little dreidel, I made it out of clay
And when it's dry and ready, with dreidel I shall play.
Oh, Dreidel, Dreidel, Dreidel, I made you out of clay
Dreidel, Dreidel, Dreidel, with Dreidel I shall play.
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