Writing to NV memory without disrupting code execution on STM32L0 and STM32L1 microcontrollers (AN4808)

In ultra-low-power devices the Flash program memory and the data EEPROM share the same memory controller. For this reason the Flash memory is not accessible during data EEPROM programming. In this firmware package (X-CUBE-NVMRWW) the implementation example provided for STM32L0 and STM32L1 microcontrollers, shows how to deal with delays in execution caused by the memory interface sharing.

Key Features

  • Continuous EEPROM programming during communication
  • Configuration of EEPROM timing


Technical Documentation

Product Specifications
Description Version Size
DB2925 DB2925: Writing to non-volatile memory without disrupting code execution on STM32L0/L1 Series software expansion for STM32Cube 1.0 113 KB
Application Notes
Description Version Size
AN4808 AN4808: Writing to non-volatile memory without disrupting code execution on microcontrollers of the STM32L0 and STM32L1 Series 1.0 263 KB
User Manuals
Description Version Size
UM2312 UM2312: Development checklist for STM32Cube Expansion Packages 1.0 283 KB
UM2285 UM2285: Development guidelines for STM32Cube Expansion Packages 1.0 485 KB

Presentations & Training Material

Description Version Size
STM32 and STM8 embedded software solutions 4.0 3 MB

Publications and Collaterals

Description Version Size
STM32 Open Development Environment Brochure 15.10 4 MB


License Agreement
Description Version Size
SLA0048 SLA0048: Mix Ultimate Liberty+OSS+3rd-party V1 - SOFTWARE LICENSE AGREEMENT 3.3 104 KB

Get Software

Part Number Software Version Marketing Status Supplier Order from ST
X-CUBE-NVMRWW 1.0.0 Active ST


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