• Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

How often is data transferred from RAM to EEPROM ?

Status
Not open for further replies.

jani12

Member
In a typical embedded automotive embedded system, I believe data is only transferred from RAM to EEPROM once every key cycle, right before embedded system goes to sleep ?
 

ronsimpson

Well-Known Member
Most Helpful Member
There are too any answers to your question.
I have one computer that copies RAM to EEPROM at power down. At power up it copies EEPROM back to RAM.
Some computers hold "calibration" data in EEPROM. That gets set at the factory and may change once a year.
EEPROM may hold a serial number, set at the factory and is never changed.
Some machines I designed have a "power up counter" and a "hour counter" in EEPROM. We want to know how long this unite has run. Some times we get a broken machine that has run 24X7X365 for 4 years. Some times we get a return that is 4 years old and has only been turned on one and has run for less than a hour. (the last one we service under the 1 year warranty)
 
Status
Not open for further replies.

Latest threads

EE World Online Articles

Loading
Top