HD64F3687GFPV Datasheet, PDF (168/538 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

Section 9 I/O Ports
9.6 Port 7
Port 7 is a general I/O port also functioning as a timer V I/O pin and SCI3_2 I/O pin. Each pin of
the port 7 is shown in figure 9.6. The register settings of the timer V and SCI3_2 have priority for
functions of the pins for both uses.
Port 7
P76/TMOV
P75/TMCIV
P74/TMRIV
P72/TXD_2
P71/RXD_2
P70/SCK3_2
Figure 9.6 Port 7 Pin Configuration
Port 7 has the following registers.
• Port control register 7 (PCR7)
• Port data register 7 (PDR7)
9.6.1 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


6
PCR76 0
5
PCR75 0
4
PCR74 0
3



When each of the port 7 pins P76 to P74 and P72 to P70
W
functions as a general I/O port, setting a PCR7 bit to 1
makes the corresponding pin an output port, while
W
clearing the bit to 0 makes the pin an input port.
W
Bits 7 and 3 are reserved bits.

2
PCR72 0
W
1
PCR71 0
W
0
PCR70 0
W
Rev.5.00 Nov. 02, 2005 Page 134 of 500
REJ09B0027-0500