EPROM programmer erase

[Jon Elson]

(Sorry, this is a bit off topic, but I do use this to
load bitfiles into FPGAs.)

I have a Xeltek Superpro/Z eprom programmer, with their
winsp ver. 1.0 software, running on Win 2K/Pro.
Today I had need to erase and reprogram an Atmel 17LV256
EEPROM, but the erase button on the programmer GUI is grayed
out. I can't remember if I ever did this before. I used
to use UV-erasable EPROMS, but this one is electrically erasable.
Is there a setting or option that enables erasing?

(I know if I try to contact Xeltek, they will try to sell me
a new programmer.)

Thanks in advance for any hints!

Jon

 

[jg]

Did you try just loading the data ?
Some ee devices simply over-write

 

[Jon Elson]

jg wrote:

Did you try just loading the data ?
Some ee devices simply over-write
Yes, I tried this, and it didn't work. After a number of people

on other forums suggested the same, I tried it again, and it worked!
So, I must have had a dirty contact on the chip that didn't connect
to the programming socket.

Thanks!

Jon