Datasheet

DocID022265 Rev 6 111/121
STM32F051x4 STM32F051x6 STM32F051x8 Package information
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Device marking
The following figure gives an example of topside marking orientation versus pin 1 identifier
location.
Figure 54. UFQFPN32 package marking example
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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