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You can eat up 100,000 writes.? Each time you change any menu item

it gets stored in EEPROM.? Ian also automatically stores the current

frequency each time you change it.

Also I meant after several years when users get intermittent errors

for no apparent reason!

rOn

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From: Jerry Gaffke via Groups.Io <jgaffke=[email protected]>
To: [email protected]
Sent: Wednesday, February 7, 2018 8:44 PM
Subject: Re: [BITX20] CAT Support uBITX Firmware CEC Version 1.0 Release #ubitx

In section 8.4 of the ATmega328P datasheet (used on the Nano, which is used on the Raduino)?
? ? (EEPROM) is organized as a separate data space, in which single bytes can be read and written.
? ? The EEPROM has an endurance of at least 100,000 write/erase cycles.
So can update each individual byte 100,000 times.
Hard to imagine burning out an EEPROM byte if it involved twiddling knobs and pressing some buttons for each update.

Where you get into trouble is when the code writes to EEPROM with no operator intervention.
Takes about 3.4ms to erase and write an eeprom byte, so a code loop could burn out a byte of eeprom in about an hour.


On Wed, Feb 7, 2018 at 03:49 pm, Ronald Pfeiffer wrote:

would be careful since EEPROM has a finite write life!

These nano's are soldered in.

?

rOn

?

From: Mike Woods <mhwoods@...>? ?Sent: Wednesday, February 7, 2018 6:27 PM

There are 20 memory channels in the latest versions (0.35 and 1.0) and they are stored in EEPROM