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Dexter
3 Posts |
 Posted - 08/03/2004 : 13:48:12
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Hi,
I cannot program any AM29F040 devices. I can get ID, read, erase, and blank check, but not write to chip. I get this error:
Error at 0x000000 Chip = 0xFF buffer = 0x25
I checked Vpp settings at its 12V when checked on (Test H/W tab).
Can someone confirm the other jumper settings? JP5, JP6, JP7? |
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| Reply #1
Dexter
3 Posts |
Posted - 08/04/2004 : 02:02:06
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Oh, I have a standard willem programmer.
I cannot even ID or erase now, no matter which chip I use. (I have 5 29F040 chips).
any ideas? |
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| Reply #2
someone
28 Posts |
Posted - 08/05/2004 : 13:24:42
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| Sector protected? |
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| Reply #3
Dexter
3 Posts |
Posted - 08/05/2004 : 13:45:24
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When it did work, it didnt seem sector protected. Shouldnt I be able to at least ID the chip, no matter if its sector protected or not?
thanks! |
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| Reply #4
SBNova
USA
3 Posts |
Posted - 09/23/2004 : 15:35:11
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I have nearly the same problem, with error at 0x000000 chip=0xff buffer=0x00. On the device page I tried selecting "skip write 0xff" with no difference. I have the MCUMall.com board that is the "dual powered" willem programmer, with the USB power source. Chip is an AMD 29F040B C 1993 AMD. I have windows XP on my Compaq laptop.
I also cant erase this same chip (actually I have two of them- both brand new, except I programmed one of them one time with my old programmer) I get "erase completed by check DQ7", but when you re-read it, it still has data. |
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| Reply #5
SBNova
USA
3 Posts |
Posted - 09/23/2004 : 15:43:13
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When looking at the programmer with the zif handle "up", serial to the left, and USB/12v to the right, I have the following settings;
JP-1 empty- no jumper
JP-2 upper position, connecting the top two of the three pins.
J-1 the one to the right of the zif- jumper is on the lower two pins of the five.
J-2, also to the right of the ZIF, is on the upper two of the six pins.
JP-5 the jumper is on the upper two of the three pins.
JP-6 jumper is on the lower two of the three.
JP-7 jumper is on the lower two of the three pins.
This is as correct as I understand via the instructions. The JP-5,6,and 7 dont look like they are important when using USB power- as it says it only has 5v- which is what a 29F040 needs right? |
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| Reply #6
someone
28 Posts |
Posted - 09/24/2004 : 15:26:57
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Check your A18 jumper setting. It located at the left side of DIP. |
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Topic |
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Programming AM29F040 error
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