HD6413003RF Datasheet, PDF (264/715 Pages) Renesas Technology Corp – Microcontroller (MCU)

Port 5 Data Direction Register (P5DDR): P5DDR is an 8-bit write-only register that can select
input or output for each pin in port 5.
Bit
7
6
5
4
3
2
1
0
Mode
1/2
P5₇DDR P5₆DDR P5₅DDR P5₄DDR P5₃DDR P5₂DDR P5₁DDR P5₀DDR
Initial value 0
0
0
0
1
1
1
1
Read/Write W
W
W
W
—
—
—
—
Mode ^{Initial value 1}
1
1
1
1
1
1
1
3/4 _{Read/Write —}
—
—
—
—
—
—
—
Port 5 data direction 7 to 4
These bits select input or
output for port 5 pins
Reserved bits
Modes 1 and 2 (1-Mbyte Modes): Port 5 functions as a generic input/output port. A pin in port 5
becomes an output pin if the corresponding P5DDR bit is set to 1, and an input pin if this bit is
cleared to 0.
Modes 3 and 4 (16-Mbyte Modes): All P5DDR bits are fixed at 1 and port 5 functions as part of
the address bus. Bits P5₃DDR to P5₀DDR are reserved and are also fixed at 1. No bit values can
be modified.
In modes 1 and 2, P5DDR is a write-only register. Its value cannot be read. All bits return 1 when
read.
P5DDR is initialized to H'0F by a reset and in hardware standby mode. In software standby mode
it retains its previous setting, so if a P5DDR bit is set to 1, the corresponding pin maintains its
output state in software standby mode.
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