Flash Reprogram -> HDFlash -> Data eeprom

[asherman]

Posted on April 17, 2003 at 09:28

Flash Reprogram -> HDFlash -> Data eeprom

[asherman]

Posted on April 15, 2003 at 12:23

Hello All ,

In the XFlash we can reprogram the Flash 10K and EEprom 300K .

In the HDlash we can reprogram the Flash 100 but how much the Emulated data EEprom ?

Shermantec

[stephanie23]

Posted on April 15, 2003 at 12:28

Emulated EEPROM is based on the Flash, so 100 cycles also!

Emulated EEPROM on XFlash is 10K.

[asherman]

Posted on April 15, 2003 at 13:18

Hello

Thanks for the reply . What we are going to to with all of the new devices . ST72F321,521 and more .

They are all in HDFlash so how i can make that i can get more cycling program on the HDFlash ?

Shermantec

[rolf]

Posted on April 17, 2003 at 09:28

Hi!

How many bytes of EEPROM data do you have to store? Depending on that number you can increase the number of write instruction. The methode of doing that is described in the FLASH PROGRAMMING REFERENCE MANUAL which is available on this site.

Example: if you need to store 20 byte EEPROM data (value between 0x00 and 0xFF) and you use sector 1 (4kbyte) for doing that, you can write this datas according to this formula:

(number of max. HD-flash erase cycles) * (size of sector) / (number of bytes which should be stored) / (memory size you need to store one byte of EEPROM data)

in this example this means:

100 *4096 / 20 /2 => so you can write this data about 10k times!

Ciao,

Rolf