关于C2口的复用

Introduction C8051F30x devices include an on-chip Cygnal 2-Wire (C2) Interface for in-system programming, debugging, and boundary scan testing. Two signals are associated with the C2 Interface: C2 Clock (C2CK) and C2 Data (C2D). To preserve package pins, the C2CK and C2D pins also function as the us