HD6433694 Datasheet, PDF (145/432 Pages) Renesas Technology Corp – 16-Bit Single-Chip Microcomputer H8 Family/H8/300H Tiny Series

9.4.1 Port Control Register 7 (PCR7)
PCR7 selects inputs/outputs in bit units for pins to be used as general I/O ports of port 7.
Initial
Bit
Bit Name Value
7


6
PCR76 0
5
PCR75 0
4
PCR74 0
3 to 0 

R/W

W
W
W

Description
Reserved
Setting a PCR7 bit to 1 makes the corresponding pin an
output port, while clearing the bit to 0 makes the pin an
input port. Note that the TCSRV setting of the timer V has
priority for deciding input/output direction of the
P76/TMOV pin.
Reserved
9.4.2 Port Data Register 7 (PDR7)
PDR7 is a general I/O port data register of port 7.
Initial
Bit
Bit Name Value
7

1
6
P76
0
5
P75
0
4
P74
0
3 to 0 
All 1
R/W

R/W
R/W
R/W

Description
Reserved
This bit is always read as 1.
PDR7 stores output data for port 7 pins.
If PDR7 is read while PCR7 bits are set to 1, the value
stored in PDR7 is read. If PDR7 is read while PCR7 bits
are cleared to 0, the pin states are read regardless of the
value stored in PDR7.
Reserved
These bits are always read as 1.
Rev. 4.00, 03/04, page 117 of 400