Author Topic: P89c51rd2 isp problems  (Read 4188 times)

Sreedharan Nandu

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P89c51rd2 isp problems
« on: January 17, 2005, 04:11:32 am »
     I was able to program the p89c51rd2hbp cntrller with the the status and boot vector FC,00h.But as when the power reduced & when i tried to read the Status byte and Flash Magic ,it  showed the boot vector & status byte as FF & FCh with the security bits 1 and 3 set.
How can i program back the status and boot vector.Also when i try to erase ,it responses suddenly with "flash erased"and when i tried to program the flash,it responses "flash programming failed".
I need your help regarding this.