Datasheet

ManualsBrandsST ManualsEmbedded Processors & ControllersMicrocontroller 32bit 128KB LQFP
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Package information STM32F303xB STM32F303xC
138/149 DS9118 Rev 14
WLCSP100 device marking 
The following figure gives an example of topside marking orientation versus ball A1 identifier 
location.
The printed markings may differ depending on the supply chain.
Other optional marking or inset/upset marks, which identify the parts throughout supply 
chain operations, are not indicated below.
Figure 50. WLCSP100, 0.4 mm pitch wafer level chip scale package
top view example
1. Parts marked as ES or 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.
MSv40444V1
Ball A1 identifier
Product identification(1)
YWW
R
Revision code
32F303VC6
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