PDA

View Full Version : Continuous Read Op. From EEPROM


gunayburak
- 30th July 2015, 19:33
Hello ;

A question digging my mind for a long time ..
I'm aware of that a continous EEPROM write ops to a PIC uC is not recommended since it's got a limitation stated in the datasheets varying between 1M and 10M times ...

How about the continous readings from EEPROM ? Does it have limitations too ? As far as I searched for the datasheet I could not find anything about it ?

Ideas ?

Thanks :)
rmteo
- 31st July 2015, 01:24
Hello ;
How about the continous readings from EEPROM ? Does it have limitations too ? As far as I searched for the datasheet I could not find anything about it ?

Thanks :)
Electrically Eraseable Programmable Read Only Memory.
gunayburak
- 31st July 2015, 02:36
Electrically Eraseable Programmable Read Only Memory.
I know what it is ... Yet the behaviour in pic mcu's may differ ... A clear answer would be appreciated ..
rmteo
- 31st July 2015, 03:43
... Yet the behaviour in pic mcu's may differ
Why should it differ?
Dave
- 31st July 2015, 15:32
There are NO limitations on reading an EEPROM. Where the limitations are involved is in the writing which requires the changing of the cell states.
gunayburak
- 31st July 2015, 16:06
There are NO limitations on reading an EEPROM. Where the limitations are involved is in the writing which requires the changing of the cell states.

Thank you so much dave .. That is an answer ..
LinkMTech
- 31st July 2015, 20:47
Check out the F-RAM (http://www.mouser.com/ProductDetail/Cypress-Semiconductor/FM25CL64B-G/?qs=sGAEpiMZZMs6Aik9Fp479uyxxuW7IEdkiACtnKXSupY%3d ). Cost more than the usual EEPROM but price has dropped by around half.
SPI or I2C interface devices, no write time delays and a trillion number of read/writes.
gunayburak
- 31st July 2015, 23:10
Check out the F-RAM (http://www.mouser.com/ProductDetail/Cypress-Semiconductor/FM25CL64B-G/?qs=sGAEpiMZZMs6Aik9Fp479uyxxuW7IEdkiACtnKXSupY%3d ). Cost more than the usual EEPROM but price has dropped by around half.
SPI or I2C interface devices, no write time delays and a trillion number of read/writes.

Thanks so much ... I'll have a look :) Where can I get the best price on them ? Any suggestion ?
LinkMTech
- 1st August 2015, 00:28
I'm spoiled to get them locally but check their site for regional sales locations here (http://www.cypress.com/products/f-ram-serial).
LinkMTech
- 1st August 2015, 01:22
Noticed that Fujitsu also makes them too.
Web site (http://www.fujitsu.com/global/products/devices/semiconductor/memory/fram/standalone/1m-i2c.html)
rmteo
- 1st August 2015, 01:50
... That is an answer ..
Actually that is an answer for your level of IQ.
HenrikOlsson
- 1st August 2015, 07:00
rmteo, comments like that is bit out of line and unnecessary, aren't they?
If you feel a question is below your level of expertise then I suggest you simply ignore it.

/Henrik.
rmteo
- 1st August 2015, 07:02
And why not? Look at the comments of the poster.
Archangel
- 1st August 2015, 07:15
And why not? Look at the comments of the poster.
Mostly because they violate the forum rules. 'nuff said.
gunayburak
- 1st August 2015, 13:01
Noticed that Fujitsu also makes them too.
Web site (http://www.fujitsu.com/global/products/devices/semiconductor/memory/fram/standalone/1m-i2c.html)

Thank you so much for your effort ...
gunayburak
- 1st August 2015, 13:15
Actually that is an answer for your level of IQ.

Well ...

What I mean by that sentence is : That is an answer I was looking for ... Because the question is clean enough as its answer should be ...
Secondly I've never bragged about my level of IQ , I know who I am , why I'm here , my level of IQ and your level of IQ now , as everyone else does searching for this post ...

Thanks to everyone and for their kind answers (those beneath my level of IQ and over , all of them)