Obsolete — sourcing through independent channels
80-BGA MICROSTAR JUNIOR — board integration note
The MSP430F5219IZQER comes in an 80-ball VFBGA package, the MICROSTAR JUNIOR variant measuring 5x5 mm. This is a fine-pitch BGA — not hand-solderable in a rework station without a profile-controlled reflow oven. The 31 I/O are distributed across the ball grid, so PCB breakout requires at least a four-layer board for fanout routing. Verify the ball-out against your layout before committing the BOM; the package is specific to this ordering code and differs from the LQFP-packaged MSP430F5xx siblings.