stm32l100rb eeprom size 2kb or 4kb?

[dfacchin]

Posted on January 17, 2014 at 14:55

In the

http://www.st.com/st-web-ui/static/active/en/resource/technical/document/datasheet/DM00078075.pdf

 of the micro it's listed that the EEPROM size is of 2Kb.

In the

http://www.st.com/st-web-ui/static/active/en/resource/technical/document/reference_manual/CD00240193.pdf

for STM32L1XX at page 46 it's written that the medium and low density devices have a Data Memory of 4kbyte (the manual is for all STM32L mcus).

What is wrong, the manual or the datasheet ?

The STM32L152RB has 4Kbyte in the datasheet, so my guess is that the manual is wrong.

tx

#stm32l-stm32l100rb-eeprom

[chen]

Posted on January 17, 2014 at 15:31

Hi

The ''RM0038 Reference manual'' is a manual for the STMF1xxxxxx family of processors.

The Datasheet is the information for (what looks like 3 variants) of a STM32L100

There may also be an 'Errata' sheet for this part

''What is wrong, the manual or the datasheet ?''

Both should be correct.

The reference manual give detailed information about the general artichecture and the peripherals for the family of processors.

The data sheet give specific details for a single processor type.

The data sheet should be the correct value you are looking for.

[Tesla DeLorean]

Posted on January 17, 2014 at 16:00

You'll probably find the die has more memory, the STM32L100RB is sold as having 128KB FLASH, 10KB RAM, 2KB EEPROM tested. Most of the material I've seen is consistent with that. It should be easy enough to confirm manually if you have the parts.

RM0038 is more of an all-encompassing document originally for the L15x parts. The L100 part is the ''value line'' and is thus somewhat feature stripped.

http://www.emcu.it/MKT/Mar13/STM32L1_Cust_March2013.pdf

They did die shrink the L1 parts, I recall seeing an number of internal inconsistencies in the presentations, as I definitely recall there being only 1 comparator in some of the original slides.

The most critical take-away is that the EEPROM is only rated for 10K cycles!!

[dfacchin]

Posted on January 22, 2014 at 10:34

Tks for the clarification