Datasheet

DocID025644 Rev 3 121/135
STM32F401xD STM32F401xE Package characteristics
133
Device marking
Figure 51. Example of UFQFPN48 marking (top view)
1. Parts marked as “ES”, “E” or accompanied by an Engineering Sample notification letter, are not yet
qualified and therefore not yet ready to be used in production and any consequences deriving from such
usage will not be at ST charge. In no event, ST will be liable for any customer usage of these engineering
samples in production. ST Quality has to be contacted prior to any decision to use these Engineering
samples to run qualification activity.
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