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???
05/04/03 13:04
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#44794 - RE: Quick Pulse EPROM Programming (8051)
Responding to: ???'s previous message
Thomas Lutz wrote:
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I have an AMD 8751H microcontroller that I wish to program. I have the microcontroller in a 40 pin package. I was looking at the intel documentation for the MCS-51 family and saw that the device must be programmed using the "Quick-Pulse" programming method.

Are you sure about that? Quick-Pulse programming is normally used for the CMOS versions (87C51). Your chip may be even older than the 87C51, and if it is you will need "slow-pulse" programming and a Vpp of 21V...

I would get a datasheet for the chip if possible. If not I have some programming specs for the Intel 8751 I could post here.

Also, what is the circular glass on top of the microcontroller for? Is that for erasing the memory with UV light?

Yes

As a note, I bought the 8751H off E-bay, so I do not know what is currently in the flash.

Not much, as it doesn't have any flash memory ;-)

Best regards,

Mikkel C. Simonsen

List of 8 messages in thread
TopicAuthorDate
Quick Pulse EPROM Programming (8051)            01/01/70 00:00      
   RE: Quick Pulse EPROM Programming (8051)            01/01/70 00:00      
   RE: Quick Pulse EPROM Programming (8051)            01/01/70 00:00      
   RE: Quick Pulse EPROM Programming (8051)            01/01/70 00:00      
   RE: Quick Pulse EPROM Programming (8051)            01/01/70 00:00      
      RE: Quick Pulse EPROM Programming (8051)            01/01/70 00:00      
         RE: Quick Pulse EPROM Programming (8051)            01/01/70 00:00      
            RE: Quick Pulse EPROM Programming (8051)            01/01/70 00:00      

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