Can flash memory be used as a data memory?

[deepu_ttc]

helloy guys ,This may be silly question ut its verp imp to me .does flash memory canbe used as data memory ( my task is to write data into flash and read back when master sends command ) if we can use then what is position of EA pin in 8051 does it connected to gnd or to Vcc.
thanks
pradeep

 

[Jepeto]

Re: flash memory

Yes some micro controllers can do it
I know that some of the Microchip 18FXXX family (18fxx2) can write data to the flash program memory on the fly
But not all of them

 

[ldanielrosa]

Re: flash memory

"Flash" refers to the manufacture process. It is non-volatile, so data will be retained with no power. It reads as fast as RAM, but writing is slower and the number of rewrites is limited (usually 1,000,000), and may require a different supply voltage for write/erase cycles. Most uCs that can rewrite their own flash have the power control built in.