HD64F3664FPV Datasheet, PDF (161/446 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

Port 7 has the following registers.
• Port control register 7 (PCR7)
• Port data register 7 (PDR7)
Section 9 I/O Ports
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
R/W Description
7


 Reserved
6
PCR76 0
5
PCR75 0
4
PCR74 0
W Setting a PCR7 bit to 1 makes the corresponding pin an
W ^{output port, while clearing the bit to 0 makes the pin an}
input port. Note that the TCSRV setting of the timer V
W
has priority for deciding input/output direction of the
P76/TMOV pin.
3


 Reserved
2



1



0



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
R/W Description
7

1
 Reserved
This bit is always read as 1.
6
P76
0
R/W PDR7 stores output data for port 7 pins.
5
P75
0
4
P74
0
R/W PDR7 is read while PCR7 bits are set to 1, the value
R/W ^{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.
3

1
 Reserved
2

1
 These bits are always read as 1.
1

1

0

1

Rev. 6.00 Mar. 24, 2006 Page 131 of 412
REJ09B0142-0600