HD64F2357VF13 Datasheet, PDF(364/1049 Page) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

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HD64F2357VF13 Datasheet, PDF (364/1049 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

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Port G Register (PORTG)

Bit

:

7

6

5

â

â

â

Initial value : Undefined Undefined Undefined

R/W

:â

â

â

4

PG4

â*

R

Note: * Determined by state of pins PG4 to PG0.

3

PG3

â*

R

2

PG2

â*

R

1

PG1

â*

R

0

PG0

â*

R

PORTG is an 8-bit read-only register that shows the pin states. It cannot be written to. Writing of output data for the port

G pins (PG4 to PG0) must always be performed on PGDR.

Bits 7 to 5 are reserved; they return an undetermined value if read, and cannot be modified.

If a port G read is performed while PGDDR bits are set to 1, the PGDR values are read. If a port G read is performed

while PGDDR bits are cleared to 0, the pin states are read.

After a power-on reset and in hardware standby mode, PORTG contents are determined by the pin states, as PGDDR and

PGDR are initialized. PORTG retains its prior state after a manual reset*, and in software standby mode.

Note: * Manual reset is only supported in the H8S/2357 ZTAT.

Rev.6.00 Oct.28.2004 page 334 of 1016

REJ09B0138-0600H

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