Rev.6.00 Oct.28.2004 page 334
of 1016
REJ09B0138-0600H
Port G Register (PORTG)
Bit
:
7
6
5
4
3
2
1
0
—
—
—
PG4
PG3
PG2
PG1
PG0
Initial value :
Undefined Undefined Undefined
—
*
—
*
—
*
—
*
—
*
R/W
:
—
—
—
R
R
R
R
R
Note:
*
Determined by state of pins PG
4
to PG
0
.
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 (PG
4
to PG
0
) 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.
Содержание ZTAT H8S/2357F
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Страница 1047: ...H8S 2357 Group H8S 2357F ZTATTM H8S 2398F ZTATTM Hardware Manual 2 6 2 Ote machi Chiyoda ku Tokyo 100 0004 Japan...