2 MODULE INTERFACES
Pin number Symbol I/O type Function
19 C1 I/O Common I/O pin,
which
corresponds to C1
(Pin 21) of IC
20 D4 I/O Common I/O pin,
which
corresponds to D4
(Pin 1) of IC
21 NC I/O No connection
Note: P indicates a power supply pin and I/O indicates an input/output pin.
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