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Chapter 4 port functions, 1 port functions – NEC switch User Manual

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User’s Manual U12978EJ3V0UD

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CHAPTER 4 PORT FUNCTIONS

4.1 Port Functions

The

µPD789800 Subseries provides the ports shown in Figure 4-1, enabling various methods of control.

Numerous other functions are provided that can be used in addition to the digital I/O port functions. For more

information on these additional functions, see CHAPTER 2 PIN FUNCTIONS.

Figure 4-1. Port Types

P20

P26

P40

P47

P10

P17

Port 2

Port 4

Port 1

P00

P07

Port 0