HD6412350 Hitachi, HD6412350 Datasheet - Page 352

• Manufacturer Part Number: HD6412350
• Description: (HD6412350 / HD6432351) 16-BIT MICROCONTROLLER
• Manufacturer: Hitachi

Port 2 Register (PORT2)
PORT2 is an 8-bit read-only register that shows the pin states. It cannot be written to. Writing of
output data for the port 2 pins (P2
If a port 2 read is performed while P2DDR bits are set to 1, the P2DR values are read. If a port 2
read is performed while P2DDR bits are cleared to 0, the pin states are read.
After a power-on reset and in hardware standby mode, PORT2 contents are determined by the pin
states, as P2DDR and P2DR are initialized. PORT2 retains its prior state after a manual reset, and
in software standby mode.
332
Bit
Initial value
R/W
Note: * Determined by state of pins P2
:
:
:
P27
—*
R
7
P26
—*
R
6
7
to P2
P25
—*
7
0
R
) must always be performed on P2DR.
5
to P2
0
.
P24
—*
R
4
P23
—*
R
3
P22
—*
R
2
P21
—*
R
1
P20
—*
R
0