HD6432633 Datasheet, PDF (443/1453 Pages) Renesas Technology Corp – Series of Microcomputers (MCUs: microcomputer units)

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