Epson指出,由於汽車電子系統不斷擴充,零件供應商勢必縮減板裝零件的安裝面與高度以增加空間容積,而S2R72A4系列所採用的微型封裝,於設計時就考量了這點,48針QFN封裝(7 mm x 7 mm)的安裝面,比48針QFP封裝(9 mm x 9 mm)減少近40%的面積,高度也同步縮減40%(從1.7 mm減少為1.0 mm)。
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