pleas ansewr now for me is usrgent!!!!!!!!!!!!!!!!!!!!!!
I read the datasheet and still donot understand the function of the 3 modes of Lock Bit...It use to prevent other from read out the flash & eeprom ? Or it use to prevent other rewrite the flash & eeprom ? ..
Can my code protect the Flash memory part while allow the eeprom data to be read out ?
I usually release my chip with lockbit so no one can't read the flash. But if I need to update or bug fixed, I can erase that chip and write again. With the lock bit set, my program can read and write value to the EEPROM. But someone can't read it via ISP programmer.
what are wrong?
i read data8052.pdf chaptar 5 for the e8053 porcessor
So, you read read data8052.pdf chaptar 5 for the e8053 porcessor. Does that mean that e8053 is the correct and 100% fully qualified name of your processor?
Then I have to assume that you mean the Marvell e8053 - isn't that a network chip?
chatper 5 say write 22 and 42 but not good,,,,i ask expurt
Who do you think will 'urgently' hunt up whatever the document you refer to is.
What is your problem, besides urgency, in helping those that MAY help you.
You are referring to some chip with incomplete information if anyone google on "data8052.pdf chaptar 5 for the e8053 porcessor" what are they going to get? if you, in your urgency, had included a link I might have had a look.
Erik
What e8053 processor?
There is no "e8053" listed at http://www.keil.com/dd/
Google gives plenty of hits for "e8053", but none on the first page is obviously an 8051.
If this is really so urgent, and you really want people to feel inclined to help you, don't you think you could at least make the effort to provide full information - and a website link?