Erasing EPROM

Comments

• Bean Posts: 8,129

  2005-10-23 15:34 edited 2005-10-23 15:34

  I don't know about a black light, but sunlight will work.
  Bean.
  
  ▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
  "SX-Video·Module" Now available from Parallax for only $28.95
  
  http://www.parallax.com/detail.asp?product_id=30012
  Product web site: www.sxvm.com
  Available now... SX-Video OSD module $59.95 www.sxvm.com
  
  Life is NOT a box of chocolates.
  Life is a trip, and 99% of the time you get where your headed.
  
  ·
• kingneb Posts: 65

  2005-10-23 15:42 edited 2005-10-23 15:42

  How long will sunlight take? Will the season matter?
  
  ▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
  All my exes live in Texas
  
  
  Oh yeah, all my exes are six feet under the ground!!!
  
  One was a lineman who violated the one hand rule.
  
  The·second put his tongue on 10 car batteries wired in series.
  
  The third was involved in a tesla coil experiment gone bad.
• Paul Baker Posts: 6,351

  2005-10-23 16:04 edited 2005-10-23 16:04

  from http://www.arlabs.com/help.htm
  
  "Usually an EPROM, once it has been programmed, will have a cover or sticker placed over the window. You cannot erase an EPROM or change its contents by removing this cover and exposing it to normal room light. Even in direct sunlight it would take two weeks of constant exposure to alter the chip. You cannot erase an EPROM with a black light or tanning bed, it is best to use an eraser manufactured to erase EPROMs and other programmable devices. "
  
  And yes season, time of day, location, and cloud cover all affect the amount of ultraviolet content·in sunlight.
  
  BTW EPROMs are very obsolete, you should consider an equivalent EEPROM or flash chip instead.
  
  ▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
  ·1+1=10
  
  Post Edited (Paul Baker) : 10/23/2005 4:07:15 PM GMT