HD64F3337YCP16V Datasheet, PDF (159/749 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

7.4.3 Pin Functions in Each Mode
Port 3 has different pin functions in different modes. A separate description for each mode is given
below.
Pin Functions in Modes 1 and 2: In mode 1 (expanded mode with on-chip ROM disabled) and
mode 2 (expanded mode with on-chip ROM enabled), port 3 is automatically used for the
input/output pins of the 8-bit data bus (D₇ to D₀). Figure 7.10 shows the pin functions in modes 1
and 2.
Port 3
Modes 1 and 2
D₇ (input/output)
D₆ (input/output)
D₅ (input/output)
D₄ (input/output)
D₃ (input/output)
D₂ (input/output)
D₁ (input/output)
D₀ (input/output)
Figure 7.10 Pin Functions in Modes 1 and 2 (Port 3)
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