Datasheet

ManualsBrandsST ManualsEmbedded Processors & ControllersMicrocontroller 32bit 256KB LQFP
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Package information STM32L476xx
244/270 DS10198 Rev 8
Figure 61. UFBGA - 144-pin, 10 x 10 mm, 0.80 mm pitch, ultra fine pitch ball
grid array package recommended footprint
 
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.
ddd  - -  0.080  - -  0.0039
eee - - 0.150 - - 0.0059 
fff - - 0.080 - - 0.0020 
1. Values in inches are converted from mm and rounded to 4 decimal digits.
Table 122. UFBGA144 recommended PCB design rules (0.80 mm pitch BGA) 
Dimension Recommended values
Pitch 0.80 mm
Dpad 0.400 mm
Dsm
0.550 mm typ. (depends on the soldermask 
registration tolerance)
Stencil opening 0.400 mm
Stencil thickness Between 0.100 mm and 0.125 mm
Pad trace width 0.120 mm
Table 121. UFBGA - 144-pin, 10 x 10 mm, 0.80 mm pitch, ultra fine pitch ball
grid array package mechanical data (continued)
Symbol
millimeters inches
(1)
Min. Typ. Max. Min. Typ. Max.
BGA_WLCSP_FT_V1
Dsm
Dpad
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