HD6433044 Hitachi Semiconductor, HD6433044 Datasheet - Page 300

• Manufacturer Part Number: HD6433044
• Description: (HD64 Series) Hitachi Single-Chip Microcomputer
• Manufacturer: Hitachi Semiconductor

Port B Data Register (PBDR): PBDR is an 8-bit readable/writable register that stores output data
for pins PB7 to PB0. When a bit in PBDDR is set to 1, if port B is read the value of the
corresponding PBDR bit is returned. When a bit in PBDDR is cleared to 0, if port B is read the
corresponding pin level is read.
PBDR is initialized to H'00 by a reset and in hardware standby mode. In software standby mode it
retains its previous setting.
Bit
Initial value
Read/Write
R/W
PB
0
7
7
PB
R/W
0
6
6
R/W
PB
0
5
5
Port B data 7 to 0
These bits store data for port B pins
287
PB
R/W
0
4
4
R/W
PB
0
3
3
R/W
PB
0
2
2
R/W
PB
0
1
1
PB
R/W
0
0
0