Datasheet

ManualsBrandsST ManualsEmbedded Processors & ControllersMicrocontroller 32bit 128KB UFQFPN
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Package information STM32L071xx
136/144 DS10690 Rev 6
Device marking for UFQFPN32
The following figure gives an example of topside marking versus pin 1 position identifier 
location. 
Other optional marking or inset/upset marks, which depend on supply chain operations, are 
not indicated below.
Figure 62. UFQFPN32 marking example (package top view) 
1. 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.
L071KZ6
MSv36159V1
Pin 1 
indentifier
Product identification
(1)
Date code
YWW
Revision code
R
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