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

10A.5 Port 7
10A.5.1 Overview
Port 7 is an 8-bit I/O port. Port 7 is a multipurpose port for the 8-bit timer I/O pins (TMRI01,
TMCI01, TMRI23, TMCI23, TMO0, TMO1, TMO2, and TMO3), DMAC I/O pins (DREQ0,
TEND0, DREQ1, and TEND1), bus control output pins (CS4 to CS7), IIC input pin (SYNCI), 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 10A-4 shows the configuration for port 7 pins.
Port 7 pins
TxD3
P77 /
P76 / RxD3
P75 / TMO3 / SCK3
TMO2 / MRES

Port 7

P74 /
TMO1 / TEND1 / CS7
P73 /
TMO0 / TEND0 / CS6 / SYNCI
P72 /
TMRI23 / TMCI23 / DREQ1 / CS5
P71 /
TMRI01 / TMCI01 / DREQ0 / CS4
P70 /
Pin functions in modes 4 to 6
P77 (I/O) /
P76 (I/O) /
P75 (I/O) /
P74 (I/O) /
P73 (I/O) /
P72 (I/O) /
P71 (I/O) /
P70 (I/O) /
Pin functions in mode 7
P77 (I/O) /
P76 (I/O) /
P75 (I/O) /
P74 (I/O) /
P73 (I/O) /
P72 (I/O) /
P71 (I/O) /
P70 (I/O) /
Figure 10A-4 Port 7 Pin Functions
TxD3 (output)
RxD3 (input)
TMO3 (output) / SCK3 (I/O)
TMO2 (output) / MRES (input)
TMO1 (output) / TEND1 (output) / CS7 (output)
TMO0 (output) / TEND0 (output) / CS6 (output) / SYNCI (input)
TMRI23 (input) / TMCI23 (input) / DREQ1 (input) / CS5 (output)
TMRI01 (input) / TMCI01 (input) / DREQ0 (input) / CS4 (output)
TxD3 (output)
RxD3 (input)
TMO3 (output) / SCK3 (I/O)
TMO2 (output) / MRES (input)
TMO1 (output) / TEND1 (output)
TMO0 (output) / TEND0 (output) / SYNCI (input)
TMRI23 (input) / TMCI23 (input) / DREQ1 (input)
TMRI01 (input) / TMCI01 (input) / DREQ0 (input)
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