Chapter 5 Port Functions; Port Functions - NEC mPD780973 Series Preliminary User's Manual

5.1 Port Functions

The µ PD780973 Subseries are provided with five input port pins, sixteen output port pins, and thirty-five input/output
port pins. Figure 5-1 shows the port configuration. Every port can be manipulated in 1-bit or 8-bit units controlled
in various ways. Moreover, the port pins can also serve as I/O pins of the internal hardware.



Port 4





Port 5




Port 6






Port 8









Port 9





CHAPTER 5 PORT FUNCTIONS

Figure 5-1. Port Types
P40
P44
P50
P54
P60
P61
P81
P87
P90
P97

P00




Port 0




P07

P10



Port 1



P14

P20




Port 2




P27
P30 




Port 3




P37
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