4 F6 o/ Z2 a: w& W9 ~4 i0 w下面的網站提供他們個人在 PCB Layout 上的經驗值: 4 X2 d& R- r+ ?$ z n4 e0 B' [Both SPI and Microwire are generally limited to on-board communications and traces of no longer than 6 inches, although longer distances (up to 10 feet) can be achieved given proper capacitance and lower bit rates. ) ~7 t7 v; J+ _+ Q
7 J" V" L( ~1 H4 A; ?- O2 {4 u6 m$ W http://www.embedded.com/design/connectivity/4023975/Serial-Protocols-Compared+ K- U5 _; ]; ?) b
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