- Tue Apr 18, 2017 12:04 pm
#65054
Yes it is cheap as in not costing an lot of $, but not so cheap when you consider what you need to do to make use of it. Lost I/O pins, required physical connections. But why would you even need it? There is no reason to even touch the flash in order to retain the counters. RTC ram is not a part of the flash memory. It is ram. You can write to it all you want.
drwheeler wrote:FRAM is cheap. Like flash but with far greater write endurance.
Wiki : https://en.wikipedia.org/wiki/Ferroelectric_RAM
Chips : http://www.mouser.com/Semiconductors/Integrated-Circuits-ICs/Memory/F-RAM/_/N-98x7s?P=1z0t6an
Adafruit dev board : https://www.adafruit.com/product/1897
Yes it is cheap as in not costing an lot of $, but not so cheap when you consider what you need to do to make use of it. Lost I/O pins, required physical connections. But why would you even need it? There is no reason to even touch the flash in order to retain the counters. RTC ram is not a part of the flash memory. It is ram. You can write to it all you want.
