Datasheet

ManualsBrandsST ManualsEmbedded Processors & ControllersMicrocontroller 32bit 128KB LQFP
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DS9118 Rev 14 131/149
STM32F303xB STM32F303xC Package information
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LQFP64 device marking
The following figure gives an example of topside marking orientation versus pin 1 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 44. LQFP64 – 10 x 10 mm, low-profile quad flat 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.
MSv36502V1
Revision code
STM32F303
Product identification
(1)
Date code
YWW
Pin 1 
indentifier
RCT6
R
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