FlexNVM EEPROM Partition of FS32K146

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FlexNVM EEPROM Partition of FS32K146

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DanielDuJijun
Contributor III

I have the following questions about analogue EE and need advice:
1. What is the erase life when the data sheet says the size ratio of FlexRAM and E_Flash is 1:16?
2、If the FlexNVM is divided into 48k E_Flash and 16k D_Flash, i.e. the size ratio of FlexRAM and E_Flash is 1:12, is it feasible? What is the erase life at this time?

Parts : FS32K146HAT0MLLT S32K146 Arm Cortex-M4F, 80 MHz, 1 Mb Flash, CAN FD, FlexIO, CSEc security, LQFP100 - S32K MCUs for General-Purpose.

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danielmartynek
NXP TechSupport
NXP TechSupport

Hi @DanielDuJijun,

If the ratio is 1:16, the write endurance is 100k.

In this case, up to 10k endurance (10% of 100k), the retention is 20 year, and 5 years for endurance >10k.

 danielmartynek_0-1693228262260.png

The datasheet specifies ratios 16 and 256.

But there is the Flex Memory Endurance Calculator for any other use case:

https://www.nxp.com/downloads/en/calculators/FME-Calculator.zip

 

Regards,

Daniel

 

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danielmartynek
NXP TechSupport
NXP TechSupport

Hi @DanielDuJijun,

If the ratio is 1:16, the write endurance is 100k.

In this case, up to 10k endurance (10% of 100k), the retention is 20 year, and 5 years for endurance >10k.

 danielmartynek_0-1693228262260.png

The datasheet specifies ratios 16 and 256.

But there is the Flex Memory Endurance Calculator for any other use case:

https://www.nxp.com/downloads/en/calculators/FME-Calculator.zip

 

Regards,

Daniel

 

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DanielDuJijun
Contributor III
Got it and thanks a lot for your great support.
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