I could not find P89C557E4 in the FlashMagic device list?

[jimmie]

I could not find P89C557E4 in the FlashMagic device list? So which device is the similar one?P89C51RC or P89C662? I also notice  the datasheet of P89C557 mentioned that it has the flash-EEPROM,is it the same one with Flash which could been multi-programming?

[Andy Ayre]

That device is not supported. It's ISP protocol is different to all the other devices that are supported, and therefore you cannot use it with Flash Magic. As it is discontinued we won't be adding support. Sorry.

It's protocol however is very simple and you can probably use Hyperterminal, or write your own quick program - perhaps in Python?

Andy

[jimmie]

Thank u for the response ,so it become an difficult work for me:),so could you give me more prompt for this,which protocel should I use in Hyperterminal, kermit or Xmodem?I had read the datasheet of P89c557,and I found the transfer protocel neither the kermit or Xmodem?Who can help me for this?

[Andy Ayre]

8 bits, no parity, 1 stop bit, no flow control. 4800 or 9600 baud.

[jimmie]

Nice to get this info.
Is  Full Erasing the must step before serial programming?
I still have an question that how to erase the EEprom by serial way,it did not be mentioned in the datasheet,only by parallel way? Could I use the similar ISP command(P89C662) like :0100000307F5  to do full chip erase?

[jimmie]

Bingo,I can successfully program P89c557 by the console now.I'll also make an simple program to share the experience,thank Andy for the info :-)