Datasheet

DS10690 Rev 6 121/144
STM32L071xx Package information
139
Figure 47. UFBGA64 – 64-ball, 5 x 5 mm, 0.5 mm pitch ultra profile fine pitch
ball grid array package recommended footprint
ddd - - 0.080 - - 0.0031
eee - - 0.150 - - 0.0059
fff - - 0.050 - - 0.0020
1. Values in inches are converted from mm and rounded to 4 decimal digits.
Table 80. UFBGA64 recommended PCB design rules (0.5 mm pitch BGA)
Dimension Recommended values
Pitch 0.5
Dpad 0.280 mm
Dsm
0.370 mm typ. (depends on the soldermask
registration tolerance)
Stencil opening 0.280 mm
Stencil thickness Between 0.100 mm and 0.125 mm
Pad trace width 0.100 mm
Table 79. UFBGA64 – 64-ball, 5 x 5 mm, 0.5 mm pitch ultra profile fine pitch
ball grid array package mechanical data (continued)
Symbol
millimeters inches
(1)
Min Typ Max Min Typ Max
A019_FP_V2
Dpad
Dsm
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