16F877 -- Why an EEPROM?
On Tue, 6 Mar 2001 12:33:11 -0600, you wrote:
>----- Forwarded by Michael J Mansheim/Graco on 03/06/01 12:36 PM -----
>> EEPROM can be written/rewritten thousands of times. Flash has a limited
>> writing memory, and it is very slow to rewrite program memory. If the
>> chip is code protected, one cannot write at all to the flash program
>> memory, but one can still use EEPROM memory.
>Actually, the write cycle times are the same (4 ms typ, 10 ms max) for
>both types of memory.
Except with the eeprom the processor can be doing other things during
the write. Writing the flash halts the CPU for the duration.
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In reply to: <OF6E8221E9.A404EA92-ON86256A07.0065E392@graco.com>
See also: www.piclist.com/techref/microchip/memory.htm?key=eeprom
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