Datasheet

DocID025936 Rev 8 119/143
STM32L052x6 STM32L052x8 Package information
136
Device marking for TFBGA64
The following figure gives an example of topside marking versus ball A 1 position identifier
location.
Other optional marking or inset/upset marks, which depend on supply chain operations, are
not indicated below.
Figure 43. TFBGA64 marking example (package top view)
2. Parts marked as “ES”, “E” or accompanied by an Engineering Sample notification letter, are not yet
qualified and therefore not approved for use in production. ST is not responsible for any consequences
resulting from such use. In no event will ST be liable for the customer using any of these engineering
samples in production. ST’s Quality department must be contacted prior to any decision to use these
engineering samples to run a qualification activity.
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