HD64F3039F18 Datasheet, PDF (166/710 Pages) Renesas Technology Corp – Renesas 16-Bit Single-Chip Microcomputer H8 Family / H8/300H Series

Section 7 I/O Ports
7.3 Port 2
7.3.1 Overview
Port 2 is an 8-bit input/output port with the pin configuration shown in figure 7.5. Pin functions
differ according to operation mode.
In modes 1 and 3 (expanded mode with on-chip ROM disabled), port 2 consists of address bus
output pins (A₁₅ to A₈). In mode 5 (expanded mode with on-chip ROM enabled), settings in the
port 2 data direction register (P2DDR) can designate pins for address bus output (A₁₅ to A₈) or
generic input. In modes 6 and 7 (single-chip mode), port 2 is a generic input/output port.
Port 2 has software-programmable built-in pull-up transistors. Pins in port 2 can drive one TTL
load and a 90-pF capacitive load. They can also drive a Darlington transistor pair.
Port 2
Port 2 pins Modes 1 and 3
Modes 5
Mode 6 and 7
P2₇ /A₁₅
P2₆ /A₁₄
P2₅ /A₁₃
P2₄ /A₁₂
P2₃ /A₁₁
P2₂ /A₁₀
P2₁ /A₉
P2₀ /A₈
A₁₅ (output)
A₁₄ (output)
A₁₃ (output)
A₁₂ (output)
A₁₁ (output)
A₁₀ (output)
A₉ (output)
A₈ (output)
P2₇ (input)/A₁₅ (output) P2₇ (input/output)
P2₆ (input)/A₁₄ (output) P2₆ (input/output)
P2₅ (input)/A₁₃ (output) P2₅ (input/output)
P2₄ (input)/A₁₂ (output) P2₄ (input/output)
P2₃ (input)/A₁₁ (output) P2₃ (input/output)
P2₂ (input)/A₁₀ (output) P2₂ (input/output)
P2₁ (input)/A₉ (output) P2₁ (input/output)
P2₀ (input)/A₈ (output) P2₀ (input/output)
Figure 7.5 Port 2 Pin Configuration
Rev.3.00 Mar. 26, 2007 Page 142 of 682
REJ09B0353-0300