DocID026291 Rev 1

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TN1178

Hardware migration

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Hardware migration

The STM32L15/6xxD and STM32L15/6xxE devices are produced in the same packages

and are pin-to-pin compatible except for WLCSP packages. All common peripherals share

the same pins.

The FSMC and SDIO and OPAMP3 peripherals are not present in STM32L15/6xxE devices.

In case FSMC or SDIO or the OPAMP3 were used in STM32L15/6xxD and are no longer

needed in the STM32L15/6xxE-based new design, some hardware changes are needed

when migrating from STM32L15/6xxD to STM32L15/6xxE devices.

In case FSMC or SDIO or OPAMP3 peripheral were not used in STM32L15/6xxD hardware

design, the transition from the STM32L15/6xxD device to the STM32L15/6xxE device is

simple. The device can be replaced without any hardware change on the application PCB.