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Hi Andy,
I know about the "P89C51RD2Hxx" & the "P89C51RD2xx" versions. What I asked was the difference between "89C51rd2" & "89V51rd2". Can I replace the "C" version with "V" version without any software or hardware changes?
I will refer the datasheet but it would help if somebody can share his experience.
Sud.

I want to know if 89c51rd2 can be directly replaced by 89v51rd2 without any changes (hardware or software)?
Else please list out the differences.

I am using Flash Magic to program P89c51RD2BA running at 16MHz. but it works only upto 4800 Baud. It takes a long time to program the chip at this rate. What can I do to improve the Baud Rate?