Datasheet

DocID026284 Rev 4 109/128
STM32F091xB STM32F091xC Package information
124
7.4 WLCSP64 package information
WLCSP64 is a 64-ball, 3.347 x 3.585 mm, 0.4 mm pitch wafer-level chip-scale package.
Figure 42. WLCSP64 package outline
1. Drawing is not to scale.
Table 75. WLCSP64 package mechanical data
Symbol
millimeters inches
(1)
Min Typ Max Min Typ Max
A 0.525 0.555 0.585 0.0207 0.0219 0.0230
A1 - 0.175 - - 0.0069 -
A2 - 0.380 - - 0.0150 -
A3 - 0.025 - - 0.0010 -
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