HP-48 FRAM Cards

[snrowe]

(07-23-2016 12:58 AM)JDW Wrote:  

(07-23-2016 12:46 AM)Dave Frederickson Wrote:  Thanks, Matthias...

JDW says, "You're welcome." :-)

(07-23-2016 12:51 AM)snrowe Wrote:  Yes READ and WRITE BOTH wear out FRAM. 1 Trillion cycles is on the order of what I read as well, this applies to read and write.

The only thing that PDF educated me on was temperature. So we shouldn't keep FRAM cards in a room higher than 85°C. That's good to know. As the mercury rises above 80°C, I think I'll switch on the A/C. :-)

Seriously, I don't see the negative you are mentioning. The data shows FRAM to have greater endurance than Flash, and most computers use SSDs now. So in effect, you're safer using FRAM in a 48GX than a computer is using its SSD! How is that a knock against FRAM in a 48GX?

Quote from article on page 3:
"A read operation in a FRAM is destructive because it requires switching the polarization state in order to sense its state. The read operation has to restore the polarization to its original state after the initial read which adds cycle time to the read operation."

Also page 6 the table states FRAM has a destructive read.