HD64F3039F18 Datasheet, PDF(161/710 Page) Renesas Technology Corp – Renesas 16-Bit Single-Chip Microcomputer H8 Family / H8/300H Series

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HD64F3039F18 Datasheet, PDF (161/710 Pages) Renesas Technology Corp – Renesas 16-Bit Single-Chip Microcomputer H8 Family / H8/300H Series

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7.2 Port 1

Section 7 I/O Ports

7.2.1 Overview

Port 1 is an 8-bit input/output port with the pin configuration shown in figure 7.1. The pin

functions differ between the expanded modes with on-chip ROM disabled, expanded modes with

on-chip ROM enabled, and single-chip mode. In modes 1, 3 (expanded modes with on-chip ROM

disabled), they are address bus output pins (A7 to A0).

In mode 5 (expanded modes with on-chip ROM enabled), settings in the port 1 data direction

register (P1DDR) can designate pins for address bus output (A7 to A0) or generic input. In modes 6

and 7 (single-chip mode), port 1 is a generic input/output port.

Pins in port 1 can drive one TTL load and a 90-pF capacitive load. They can also drive a

Darlington transistor pair.

Port 1

Port 1 pins Modes 1 and 3 Mode 5

Modes 6 and 7

P17 /A7

P16 /A6

P15 /A5

P14 /A4

P13 /A3

P12 /A2

P11 /A1

P10 /A0

A 7 (output)

A 6 (output)

A 5 (output)

A 4 (output)

A 3 (output)

A 2 (output)

A 1 (output)

A 0 (output)

P17 (input)/A 7 (output)

P16 (input)/A 6 (output)

P15 (input)/A 5 (output)

P14 (input)/A 4 (output)

P13 (input)/A 3 (output)

P12 (input)/A 2 (output)

P11 (input)/A 1 (output)

P10 (input)/A 0 (output)

P17 (input/output)

P16 (input/output)

P15 (input/output)

P14 (input/output)

P13 (input/output)

P12 (input/output)

P11 (input/output)

P10 (input/output)

Figure 7.1 Port 1 Pin Configuration

Rev.3.00 Mar. 26, 2007 Page 137 of 682

REJ09B0353-0300

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