can't read location 0000h of flash

babidesai123 · ‎2003-04-29

Posted on April 29, 2003 at 15:19

babidesai123 · ‎2011-05-17

Posted on May 17, 2011 at 11:53

Hello,

We are trying to erase or program the sector FS1 of primary flash ,page1,which is located in 0000 H to 3FFF H as data space

But we rae not able to achieve this.

If we map this to 8000h to BFFFH we can erase the same. with the same exisiting code.

So according to me there is no problem in our code C code for erasing the sector.

& i have confifured primary as data memory & secondary as code space.

ALL VM &PAGE REGISTER INITILIZATION ROUTIES ARE AT THE SAME SPACE FOR BOTH THE BLOCKS.

Is there any limitation to erase or program the lowest sector???

i would like to know the reason behind the same.

purvi

joseph2399 · ‎2011-05-17

Posted on May 17, 2011 at 11:53

Make sure your chip select equation is setup correctly for your Flash Sector FS1 before you issue the Erease Sector command i.e. FS1 is active(selected) at memory location 0-0x3fff on page 1. This can be done in the PSDsoft Express Chip Select Equations menu.