Storing data in program memory(AT89s52)!!!

[ergman]

Hello everyone,

How can I store some data into the on chip ROM of uC AT89s52 using Assembly Language.
PS: I could have done it using the DB directive but in this case i want to copy the contents of a RAM location to the internal ROM. I've tried using the instruction:

MOV DPTR,#2000H
MOVC @DPTR,#data

But the above mentioned instruction is not supported...it gives errors while assembling....

Is there any other way to do it???

Thnx...

 

[FvM]

The feature you are asking for is depending on the hardware capability to write to the flash memory during program execution (so called self-write). It's not available for AT89S52 family.

 

[ergman]

The feature you are asking for is depending on the hardware capability to write to the flash memory during program execution (so called self-write). It's not available for AT89S52 family.

Is there any other uC which is compatible with AT89s52 and has this "self write" capability???

 

[FvM]

E.g. NXP P89V51RD2 has the feature, there called IAP (in-application programming).

 

[ergman]

Ohk @FvM...Thanks for your help..

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Ohk @FvM...Thanks for your help..

 

[js]

Many silabs mcu-s have self programming feature!
**broken link removed**