Renesas H8S Series Hardware Manual page 323

16-bit single-chip microcomputer
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Note: * Manual reset is only supported in the H8S/2357 ZTAT.
Port 5 Data Register (P5DR)
Bit
:
7
Initial value :
Undefined Undefined Undefined Undefined
R/W
:
P5DR is an 8-bit readable/writable register that stores output data for the port 5 pins (P5
Bits 7 to 4 are reserved; they return an undetermined value if read, and cannot be modified.
P5DR is initialized to H'0 (bits 3 to 0) by a power-on reset, and in hardware standby mode. It retains its prior state after a
manual reset*, and in software standby mode.
Note: * Manual reset is only supported in the H8S/2357 ZTAT.
Port 5 Register (PORT5)
Bit
:
7
Initial value :
Undefined Undefined Undefined Undefined
R/W
:
Note: * Determined by state of pins P5
PORT5 is an 8-bit read-only register that shows the pin states. It cannot be written to. Writing of output data for the port 5
pins (P5
to P5
) must always be performed on P5DR.
3
0
Bits 7 to 4 are reserved; they return an undetermined value if read, and cannot be modified.
If a port 5 read is performed while P5DDR bits are set to 1, the P5DR values are read. If a port 5 read is performed while
P5DDR bits are cleared to 0, the pin states are read.
After a power-on reset and in hardware standby mode, PORT5 contents are determined by the pin states, as P5DDR and
P5DR are initialized. PORT5 retains its prior state after a manual reset*, and in software standby mode.
Note: * Manual reset is only supported in the H8S/2357 ZTAT.
6
5
4
6
5
4
to P5
.
3
0
3
2
P53DR
P52DR
P51DR
0
0
R/W
R/W
R/W
3
2
P53
P52
P51
—*
—*
—*
R
R
Rev.6.00 Oct.28.2004 page 295 of 1016
1
0
P50DR
0
0
R/W
to P5
).
3
0
1
0
P50
—*
R
R
REJ09B0138-0600H

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