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e.li1
e.li1
Associate
August 19, 2019
Solved

What is the difference between STM32WB55 and ES32WB55?

  • August 19, 2019
  • 2 replies
  • 1196 views

Hi, I have two types of MCUs that I am building a board with. One is labeled as STM32WB55, while the other one is ES32WB55. Is there any difference between the two? I could not find any information on the ES32 chip in my Googling. I am having trouble connecting to the chip using an ST-Link. Does it have anything to do with the fact that I am using an ES chip?

Thanks.

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Best answer by BRYAN SPEED

ES , I think means Engineering Sample

2 replies

BRYAN SPEED
BRYAN SPEEDAnswer
Visitor II
August 19, 2019

ES , I think means Engineering Sample

e.li1
e.li1Author
Associate
August 19, 2019

Thanks Bryan. That makes sense.

Remi QUINTIN
Remi QUINTIN
Technical Moderator
August 20, 2019

​Yes it is an engineering sample, which means it is a very early sample of STM32WB product which was not fully validated and may have some issues corrected in the final STM32WB devices delivered on the market.

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