SH7205 Datasheet, PDF(1540/1904 Page) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7200 Series

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SH7205 Datasheet, PDF (1540/1904 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7200 Series

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Section 28 I/O Ports

The I/O pins include a weak keeper circuit or pull-up circuit that fixes the input level high or low

when the I/O pins are not driven from outside. Generally in the CMOS products, input levels on

unused input pins must be fixed by way of external pull-up or pull-down resistors. However, the

I/O pins having a weak keeper circuit or pull-up circuit of this LSI can eliminate these outer

circuits and reduce the number of parts in the system. If the pull-up or pull-down resistors is

necessary to fix the pin level, use the resistor of 4.7 kâ¦ or smaller.

28.2 Register Descriptions

The port has the following registers.

Table 28.1 Register Configuration

Register Name

Port A data register L

Port A port register L

Port B data register H

Port B data register L

Port B port register H

Port B port register L

Port C data register L

Port C port register L

Port D data register L

Port D port register L

Port E data register L

Port E port register L

Port F data register L

Port F port register L

Port G data register L

Port H data register L

Port H port register L

Port J data register L

Port J port register L

Port K data register L

Port K port register L

Abbreviation R/W

PADRL

R/W

PAPRL

R

PBDRH

R/W

PBDRL

R/W

PBPRH

R

PBPRL

R

PCDRL

R/W

PCPRL

R

PDDRL

R/W

PDPRL

R

PEDRL

R/W

PEPRL

R

PFDRL

R/W

PFPRL

R

PGDRL

R/W

PHDRL

R/W

PHPRL

R

PJDRL

R/W

PJPRL

R

PKDRL

R/W

PKPRL

R

Initial

Value

H'0000

H'xxxx

H'0000

H'0000

H'000x

H'xxxx

H'0000

H'0xxx

H'0000

H'000x

H'xx00

H'xxxx

H'0000

H'00xx

H'00xx

H'0000

H'xxxx

H'0000

H'xxxx

H'0000

H'xxxx

Address

Access

Size

H'FFFE3816 8, 16

H'FFFE381A 8, 16

H'FFFE3834 8, 16, 32

H'FFFE3836 8, 16

H'FFFE3838 8, 16, 32

H'FFFE383A 8, 16

H'FFFE3856 8, 16

H'FFFE385A 8, 16

H'FFFE3876 8, 16

H'FFFE387A 8, 16

H'FFFE3896 8, 16

H'FFFE389A 8, 16

H'FFFE38B6 8, 16

H'FFFE38BA 8, 16

H'FFFE38D6 8, 16

H'FFFE38F6 8, 16

H'FFFE38FA 8, 16

H'FFFE3916 8, 16

H'FFFE391A 8, 16

H'FFFE3936 8, 16

H'FFFE393A 8, 16

Rev. 1.00 Mar. 25, 2008 Page 1508 of 1868

REJ09B0372-0100

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