HD6473032F16 Datasheet, PDF (292/847 Pages) Renesas Technology Corp – Hardware Manual Renesas 16-Bit Single-Chip Microcomputer H8 Family/H8/300H Series

Section 9 I/O Ports
9.6 Port 5
9.6.1 Overview
Port 5 is a 4-bit input/output port with the pin configuration shown in figure 9.5. The pin functions
differ depending on the operating mode.
In modes 1 to 4 (expanded modes with on-chip ROM disabled), port 5 consists of address output
pins (A₁₉ to A₁₆). In modes 5 and 6 (expanded modes with on-chip ROM enabled), settings in the
port 5 data direction register (P5DDR) designate pins for address bus output (A₁₉ to A₁₆) or
generic input. In mode 7 (single-chip mode), port 5 is a generic input/output port.
Port 5 has software-programmable built-in pull-up MOS transistors.
Pins in port 5 can drive one TTL load and a 90-pF capacitive load. They can also drive an LED or
a darlington transistor pair.
Port 5
Port 5
pins
P5₃ /A₁₉
P5₂ /A₁₈
P5₁ /A₁₇
P5₀ /A₁₆
Modes 1 to 4
A₁₉ (output)
A₁₈ (output)
A₁₇ (output)
A₁₆ (output)
Modes 5 and 6
Mode 7
P5₃ (input)/A₁₉ (output)
P5₂ (input)/A₁₈ (output)
P5₁ (input)/A₁₇ (output)
P5₀ (input)/A₁₆ (output)
P5₃ (input/output)
P5₂ (input/output)
P5₁ (input/output)
P5₀ (input/output)
Figure 9.5 Port 5 Pin Configuration
Rev. 3.00 Mar 21, 2006 page 262 of 814
REJ09B0302-0300