D12320VF25IV Datasheet, PDF (442/1304 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

Section 9 I/O Ports
9.10 Port C
9.10.1 Overview
Port C is an 8-bit I/O port. Port C has an address bus output function, and the pin functions change
according to the operating mode.
Port C has a built-in MOS input pull-up function that can be controlled by software.
Figure 9.12 shows the port C pin configuration.
Port C
Port C pins
PC₇ / A7
PC₆ / A₆
PC₅ / A₅
PC₄ / A4
PC₃ / A₃
PC₂ / A₂
PC₁ / A₁
PC₀ / A₀
Pin functions in modes 4 and 5
A₇ (output)
A₆ (output)
A₅ (output)
A₄ (output)
A₃ (output)
A₂ (output)
A₁ (output)
A₀ (output)
Pin functions in mode 6
PC₇ (input) / A₇ (output)
PC₆ (input) / A₆ (output)
PC₅ (input) / A₅ (output)
PC₄ (input) / A₄ (output)
PC₃ (input) / A₃ (output)
PC₂ (input) / A₂ (output)
PC₁ (input) / A₁ (output)
PC₀ (input) / A₀ (output)
Pin functions in mode 7
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 9.12 Port C Pin Functions
Rev.6.00 Sep. 27, 2007 Page 410 of 1268
REJ09B0220-0600