Flash erase byte routine

[longpole001]

yes i have seen better chips and will change to them , the routines work for all the same size chip , ill how much i can get the SST25VF080B for ,
but ill also try W25Q80BV - have ordered 200 of these at 6c each + freight

these when they arrive they have a 4k erase space option , and have 25ms time to do it , plus other optionsthat come from the Q series of flash .

be it 4k or 64k , a routine to change say 1- 256k bytes in the same sector/page on the fly is really nice routine to have on hand on these chips and would be easy enought o change to the size that best suites your needs


http://www.adafruit.com/datasheets/W25Q80BV.pdf

[EarlyBird2]

be it 4k or 64k , a routine to change say 1- 256k bytes in the same sector/page on the fly is really nice routine to have on hand on these chips and would be easy enough to change to the size that best suites your needs

We need to start on the routine or have you started?

Your approach in #1 is to copy sectors to be changed to sector 0. The routine will read from the sector 0 into say byte variables these will then be changed if required and written to Flash. This will be repeated for the whole 4k.

Any thoughts?