SH7080_09 Datasheet, PDF(1157/1622 Page) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperH RISC engine Family

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SH7080_09 Datasheet, PDF (1157/1622 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperH RISC engine Family

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Section 21 Pin Function Controller (PFC)

Initial

Bit

Bit Name Value R/W Description

15 to 13 â¯

All 0

R

Reserved

These bits are always read as 0. The write value

should always be 0.

12

PC23MD0 0*1

R/W PC23 Mode

Select the function of the PC23/A23 pin.

0: PC23 I/O (port)

1: A23 output (BSC)*2

11 to 9 â¯

All 0

R

Reserved

These bits are always read as 0. The write value

should always be 0.

8

PC22MD0 0*1

R/W PC22 Mode

Select the function of the PC22/A22 pin.

0: PC22 I/O (port)

1: A22 output (BSC)*2

7 to 5 â¯

All 0

R

Reserved

These bits are always read as 0. The write value

should always be 0.

4

PC21MD0 0*1

R/W PC21 Mode

Select the function of the PC21/A21 pin.

0: PC21 I/O (port)

1: A21 output (BSC)*2

3 to 1 â¯

All 0

R

Reserved

These bits are always read as 0. The write value

should always be 0.

0

PC20MD0 0*1

R/W PC20 Mode

Select the function of the PC20/A20 pin.

0: PC20 I/O (port)

1: A20 output (BSC)*2

Notes: 1. The initial value is 1 in the on-chip ROM disabled external-extension mode.

2. This function is enabled only in the on-chip ROM enabled/disabled external-extension

mode. Do not set 1 in single-chip mode.

Rev. 4.00 Dec. 15, 2009 Page 1097 of 1558

REJ09B0181-0400

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