Port 7; 5.1 Overview - Renesas H8S/2633 Series Hardware Manual

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
MRES
P74 /
CS7
P73 /
CS6
P72 /
CS5
P71 /
CS4
P70 /
Figure 10B-4 Port 7 Pin Functions
Pin functions in modes 4 to 6
P77 (I/O) / TxD3 (output)
P76 (I/O) / RxD3 (input)
P75 (I/O) / SCK3 (I/O)
MRES (input)
P74 (I/O) /
CS7 (output)
P73 (I/O) /
CS6 (output)
P72 (I/O) /
CS5 (output)
P71 (I/O) /
CS4 (output)
P70 (I/O) /
Pin functions in mode 7
(I/O) / TxD3 (output)
P77
RxD3 (input)
P76 (I/O) /
P75 (I/O) / SCK3 (I/O)
MRES (input)
P74 (I/O) /
P73 (I/O)
P72 (I/O)
P71 (I/O)
P70 (I/O)
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