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Difference at89c51 at89s51

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2 Threads found on edaboard.com: Difference at89c51 at89s51
Hi, I want program at89c51 Atmel IC, I don't have any programming software for this IC and flash magic didn't work for it and some peple says this IC not programed at RS232 uC kit.only at89s51 ic is programe.. And also what is difference between them..?? Can any one help to how program this ic and there is any programmin
Could any body tell me abot the difference betwin 89c51 & 89s51 in the data sheet i got the pins status are the same but the flash memory of both mcu is in system programmable but the 89s51 only have pins allocated for in system programming. what about 89c51 in systemm programming?