8 Limitation
8.1 RSS/bootloader limitation
Issue observed:
The STM32L5 part soldered on NUCLEO-L552ZE-Q that embeds the bootloader V9.0 is affected by the
limitations described in Section 6.11 RSS/bootloader.
Proposed workaround:
Refer to Section 6.11 RSS/bootloader to detail workaround.
Parts impacted:
This applies only to the NUCLEO-L552ZE-Q with the finished good (FG) NUL552ZEQ$AU1 (Sticker available on
the top side of the board).
8.2 SMPS limitation
Issue observed:
The STM32L5 part soldered on NUCLEO-L552ZE-Q embeds an internal SMPS. The sample revision rev B
embeds two SMPS limitations: SMPS regulation loss upon transiting into SMPS LP mode, and
Unpredictable SMPS state at power-on. Refer to errata sheet STM32L552xx/562xx device errata (ES0448) for
more details.
Proposed workaround:
Refer to errata sheet STM32L552xx/562xx device errata (ES0448).
Parts impacted:
This applies only on the NUCLEO-L552ZE-Q with the finished good (FG) NUL552ZEQ$AU1 (Sticker available on
the top side of the board).
UM2581
Limitation
UM2581 - Rev 2
page 40/48