SH7014 Datasheet, PDF (512/754 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer

17. I/O Ports (I/O)
17.3 Port B
Port B is a 10-pin input/output port (8-pin in the SH7014) as shown in table 17.4.
Table 17.4 Port B
ROM Disabled Extended
Mode (Modes 0, 1)
ROM Enabled Extended
Mode (Mode 2)*
PB9 (I/O)/IRQ7 (input)/
A21 (output)
PB9 (I/O)/IRQ7 (input)/
A21 (output)
PB8 (I/O)/IRQ6 (input)/
A20 (output)/WAIT (input)
PB8 (I/O)/IRQ6 (input)/
A20 (output)/WAIT (input)
PB7 (I/O)/A19 (output)
PB7 (I/O)/A19 (output)
PB6 (I/O)/A18 (output)
PB6 (I/O)/A18 (output)
PB5 (I/O)/IRQ3
(input)/RDWR (output)
PB5 (I/O)/IRQ3 (input)/
RDWR (output)
PB4 (I/O)/IRQ2 (input)/
CASH (output)
PB4 (I/O)/IRQ2 (input)/
CASH (output)
PB3 (I/O)/IRQ1 (input)/
CASL (output)
PB3 (I/O)/IRQ1 (input)/
CASL (output)
PB2 (I/O)/IRQ0 (input)/
RAS (output)
PB2 (I/O)/IRQ0 (input)/
RAS (output)
A17 (output)
PB1 (I/O)/A17 (output)
A16 (output)
PB0 (I/O)/A16 (output)
Note: * SH7016 and SH7017 only.
Single Chip Mode*
PB9 (I/O)/IRQ7 (input)
PB8 (I/O)/IRQ6 (input)
PB7 (I/O)
PB6 (I/O)
PB5 (I/O)/IRQ3 (input)
PB4 (I/O)/IRQ2 (input)
PB3 (I/O)/IRQ1 (input)
PB2 (I/O)/IRQ0 (input)
PB1 (I/O)
PB0 (I/O)
17.3.1 Register Configuration
Table 17.5 summarizes the port B register.
Table 17.5 Port B Register
Name
Abbreviation R/W
Port B data register PBDR
R/W
Initial Value
H'0000
Address
H'FFFF8390
H'FFFF8391
Access Size
8, 16, 32
Rev.5.00 Sep. 27, 2007 Page 478 of 716
REJ09B0398-0500