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Terry Barnaby
Terry Barnaby
Associate III
September 8, 2021
Solved

STM32WL production process

What is the production process (nm) of the STM32WL MCU's ? We are looking at designing a system that will have to operate in a possible radiation encvironment and the nm size of the process will have a bearing on this.

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Bubbles
BubblesBest answer
ST Employee
September 10, 2021

Hello Terry,

it's 90nm.

ECC on flash is nice, but for radiation resilience you'd probably want ECC on SRAM as well. Most STM32H7 has that, WL does not.

J.

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2 replies

Bubbles
BubblesBest answer
ST Employee
September 10, 2021

Hello Terry,

it's 90nm.

ECC on flash is nice, but for radiation resilience you'd probably want ECC on SRAM as well. Most STM32H7 has that, WL does not.

J.

To give better visibility on the answered topics, please click on Accept as Solution on the reply which solved your issue or answered your question.
Terry Barnaby
Terry BarnabyAuthor
Associate III
September 10, 2021

Many thanks for the info. In the application I am looking at the device is mainly asleep and wakes up now and then for a measurement. So the lack of SRAM ECC is probably not so much of a hurdle. Thanks again

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