Erase and Program the 12C508?
Raymond Yung
What procedure can ERASE and PROGRAM the PIC12C508?
If anyone know, Please email to me!! Thank You :)
mailto:eter...@hk.super.net
Raymond Yung
Gerald Coe
<eter...@hk.super.net> writes
To erase the 12C508 you will need to use the windowed version of the
chip and an ultraviolet (UV) eraser. Difficulties have been reported in
these newsgroups about the length of time needed to erase them and the
reliability of the eraseing process. They should be ok though, if you
give them enough time.
You might like to bear in mind that for the price of the windowed part
you can buy around 10 one-time-programmable (OTP) parts.
You will need a programmer to program them with. A search of the web
will provide lots of them. Check out our Pic/Developer on our website
below.
Assuming your not just wanting to program **that** playstation file, you
will need some software to write/assemble/simulate your code. Check out
the MPLAB software free from microchip - www.microchip.com
--
Kindest Regards | gerry@devantech | We manufacture Pic programmers, 8031,
Gerald Coe | .demon.co.uk | 68302, 64180, 80C188EB cpu modules.
http://www.devantech.demon.co.uk | Full custom uP control systems designed.
Saddle
for an hour. This used to work on eproms for about 20 cycles but I don't
know if the black plastic casing will survive. On the windowless parts, give
it a go, they were heading for the bin anyway.
Regards,
Saddle (In the land of OZ)
Raymond Yung
face same as the windowed EPROM?
If I've a 8pin non-window version of PIC12C508, this mean that is OTP parts?
It not same as PIC16F84 can program many times?
Raymond
Gerald Coe wrote:
> > What procedure can ERASE and PROGRAM the PIC12C508?
> >
Tap
<eter...@hk.super.net> wrote:
>I don't know the window version of 12C508 is what type (mean the face)!! the
>face same as the windowed EPROM?
>
>If I've a 8pin non-window version of PIC12C508, this mean that is OTP parts?
Yes it does.. the 12c508 is not flash or eeprom. I am not sure you can
even get a windowed version of this one
>It not same as PIC16F84 can program many times?
nope
Richard Steven Walz
>
> On Fri, 28 Aug 1998 09:46:44 -0700, Raymond Yung
> <eter...@hk.super.net> wrote:
>
> >I don't know the window version of 12C508 is what type (mean the face)!! the
> >face same as the windowed EPROM?
> >
> >If I've a 8pin non-window version of PIC12C508, this mean that is OTP parts?
> Yes it does.. the 12c508 is not flash or eeprom. I am not sure you can
> even get a windowed version of this one
Yes, I've only seen windowed! With quartz windows those are the biggest
expense, (and testing hermetic).
-Steve
> >It not same as PIC16F84 can program many times?
> nope
---------
Nope.
-Steve
> >Raymond
> >
> >Gerald Coe wrote:
> >
> >> > What procedure can ERASE and PROGRAM the PIC12C508?
> >> >
> >> >Raymond Yung
> >>
> >> To erase the 12C508 you will need to use the windowed version of the
> >> chip and an ultraviolet (UV) eraser. Difficulties have been reported in
> >> these newsgroups about the length of time needed to erase them and the
> >> reliability of the eraseing process. They should be ok though, if you
> >> give them enough time.
> >> You might like to bear in mind that for the price of the windowed part
> >> you can buy around 10 one-time-programmable (OTP) parts.
> >>
> >> You will need a programmer to program them with. A search of the web
> >> will provide lots of them. Check out our Pic/Developer on our website
> >> below.
> >>
> >> Assuming your not just wanting to program **that** playstation file, you
> >> will need some software to write/assemble/simulate your code. Check out
> >> the MPLAB software free from microchip - www.microchip.com
-----------------------------
They program almost the same as 16C/F84's, different pulse/voltage,
otherwise same.
-Steve
--
-Steve Walz rst...@armory.com ftp://ftp.armory.com:/pub/user/rstevew
-Electronics Site!! 1000 Files/50 Dirs!! http://www.armory.com/~rstevew
Europe:(Italy) http://ftp.cised.unina.it/pub/electronics/ftp.armory.com
Don
>
> On Fri, 28 Aug 1998 09:46:44 -0700, Raymond Yung
> <eter...@hk.super.net> wrote:
>
> >I don't know the window version of 12C508 is what type (mean the face)!! the
> >face same as the windowed EPROM?
> >
> >If I've a 8pin non-window version of PIC12C508, this mean that is OTP parts?
> Yes it does.. the 12c508 is not flash or eeprom. I am not sure you can
> even get a windowed version of this one
I believe you can, at least I know I've seen either the 508 or 509 in a
catalog,but.... for an arm and a leg. :)
Don]
Spehro Pefhany
> I believe you can, at least I know I've seen either the 508 or 509 in a
> catalog,but.... for an arm and a leg. :)
Microchip's prices for erasable parts seem pretty reasonable to me, but
then I am comparing with other makers, not with high-volume EPROMS. I
don't think that 8-pin ceramic windowed package is very popular with other
manufacturers. ;-)
--
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Spehro Pefhany "The Journey is the reward"
sp...@interlog.com
Fax:(905) 332-4270 (small micro system devt hw/sw + mfg)
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Gerald Coe
<eter...@hk.super.net> writes
>I don't know the window version of 12C508 is what type (mean the face)!! the
>face same as the windowed EPROM?
>
>If I've a 8pin non-window version of PIC12C508, this mean that is OTP parts?
>It not same as PIC16F84 can program many times?
>
>Raymond
Correct again. The 12C508 is EPROM based, The 16F84 is FLASH based. To
erase it you need to shine ultra-violet light on the chip. You can only
do this though the ceramic devices with the quartz window.
The erasable part number is PIC12C508JW. In the UK it costs 9.95, nearly
10 times the price of the standard version (UK1.11) - prices from the
Farnell cat.
Paul Mateer
vector and have it point to a new location and run your code from
there. Remember that once you "burn" the part you can still turn a
"1" into a "0" but NOT the other way. By changing the reset
(start-up) vector in this way you can use the un-programmed space of
the device. This is very handy for small coded projects to perform
upgrades.
73 es the Best of DX!!!!!
Paul Mateer, AA9GG
Friends of Amateur Radio Group (F.A.R.G.)