HD6432633 Datasheet, PDF (519/1453 Pages) Renesas Technology Corp – Series of Microcomputers (MCUs: microcomputer units)

10B.5 Port 7
10B.5.1 Overview
Port 7 is an 8-bit I/O port. Port 7 is a multipurpose port for the bus control output pins (CS4 to
CS7), SCI I/O pins (SCK3, RxD3, and TxD3), and manual reset input pin (MRES). The pin
functions for P77 to P74 are the same in all operating modes. P73 to P70 pin functions are
switched according to operating mode.
Figure 10B-4 shows the configuration for port 7 pins.
Port 7
Port 7 pins
P77 / TxD3
P76 / RxD3
P75 / SCK3
P74 / MRES
P73 / CS7
P72 / CS6
P71 / CS5
P70 / CS4
Pin functions in modes 4 to 6
P77 (I/O) / TxD3 (output)
P76 (I/O) / RxD3 (input)
P75 (I/O) / SCK3 (I/O)
P74 (I/O) / MRES (input)
P73 (I/O) / CS7 (output)
P72 (I/O) / CS6 (output)
P71 (I/O) / CS5 (output)
P70 (I/O) / CS4 (output)
Pin functions in mode 7
P77 (I/O) / TxD3 (output)
P76 (I/O) / RxD3 (input)
P75 (I/O) / SCK3 (I/O)
P74 (I/O) / MRES (input)
P73 (I/O)
P72 (I/O)
P71 (I/O)
P70 (I/O)
Figure 10B-4 Port 7 Pin Functions
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