D12320VF25IV Datasheet, PDF (446/1304 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

Section 9 I/O Ports
Mode 6: In mode 6, port C pins function as address outputs or input ports. Input or output can be
specified on an individual bit basis. Setting a PCDDR bit to 1 makes the corresponding port C pin
an address output, while clearing the bit to 0 makes the pin an input port.
Port C pin functions in mode 6 are shown in figure 9.14.
Port C
When PCDDR = 1
A₇ (output)
A₆ (output)
A₅ (output)
A₄ (output)
A₃ (output)
A₂ (output)
A₁ (output)
A₀ (output)
When PCDDR = 0
PC₇ (input)
PC₆ (input)
PC₅ (input)
PC₄ (input)
PC₃ (input)
PC₂ (input)
PC₁ (input)
PC₀ (input)
Figure 9.14 Port C Pin Functions (Mode 6)
Mode 7: In mode 7, port C pins function as I/O ports. Input or output can be specified for each pin
on an individual bit basis. Setting a PCDDR bit to 1 makes the corresponding port C pin an output
port, while clearing the bit to 0 makes the pin an input port.
Port C pin functions in mode 7 are shown in figure 9.15.
Port C
PC₇ (I/O)
PC₆ (I/O)
PC₅ (I/O)
PC₄ (I/O)
PC₃ (I/O)
PC₂ (I/O)
PC₁ (I/O)
PC₀ (I/O)
Figure 9.15 Port C Pin Functions (Mode 7)
Rev.6.00 Sep. 27, 2007 Page 414 of 1268
REJ09B0220-0600