How to whrite a eprom M27C512

[treo]

Hi
I try to write a M27c512 plcc32 new with GW 4x programer without succes.
I need your help.:banghead:

[chipcar cordoba]

eprom that can not be PLCC32, I think? but these must use an eprom eraser if they are used ... can not be written as the flash ...
greetings .

[treo]

eprom that can not be PLCC32, I think? but these must use an eprom eraser if they are used ... can not be written as the flash ...
greetings .
My eprom are new like i write before.

[knok]

My eprom are new like i write before.

ok , it?s new , but is empty ?

[mexanico1971]

i use willem ! no that one ! but i think its the same way ! nedd 14volts ! to flash

[treo]

All setings are ok.I dont know what is wrong.

[mexanico1971]

but you can read ?! read first !

[treo]

but you can read ?! read first !
Yes I readit ok every time but when I pres ID buton I get message device unknown not in library.If I try to write M27c512 Dip is ok,only Plcc package not able to write.

[hector]

Hello i write this eprom with willem eprom.
The other day i can?t to write the eprom, and the problem was the USB Power.

I powered it with a transformer 12V DC, and read,write and verify OK.

Ahhh, first, the eprom has to be erased with UV eraser, around 20 minutes. then check it is empty.

Thanks

[treo]

Hello i write this eprom with willem eprom.
The other day i can?t to write the eprom, and the problem was the USB Power.

I powered it with a transformer 12V DC, and read,write and verify OK.

Ahhh, first, the eprom has to be erased with UV eraser, around 20 minutes. then check it is empty.

Thanks
The eprom is empty I check first,my programer needs external suply with 9v I try with this 9volt and nothing.

[hector]

I think that eprom need 12,75 V to reprograming.
See you the datasheet.

[treo]

I think that eprom need 12,75 V to reprograming.
See you the datasheet.
Yes You"re right programer make 12 volt from 5 or 9 volt from power suply.I think my eproms from Farnel are bad.

[Zmann]

Gq4x programmer? What is the plcc-dil (dip) adapter used. There are two types of plcc32-dil adapter, plcc32-dil32 and plcc32-dil28. Your chip needs the second one, plcc32-dil32 is for mostly flashs like 28fxxx,29fxxx.

Btw, i think you're aware that if your chip is of otp (one time programmable e.g. without glass window) type you have no second chance to program it

[treo]

Gq4x programmer? What is the plcc-dil (dip) adapter used. There are two types of plcc32-dil adapter, plcc32-dil32 and plcc32-dil28. Your chip needs the second one, plcc32-dil32 is for mostly flashs like 28fxxx,29fxxx.

Btw, i think you're aware that if your chip is of otp (one time programmable e.g. without glass window) type you have no second chance to program it
Hi
I use Plcc32-dil28 adapter with no succes for 3 eprom brand new.

[Zmann]

Did the programmer hang up at least for a while when no success

[mitin]

i use beeprog