H8SSLASH2214 datasheet(341/936 Pages) RENESAS

Il numero della parte	H8S/2214

Spiegazioni elettronici	16-Bit Single-Chip Microcomputer H8S Family/H8S/2200 Series

PDF	936 Pages

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Produttore elettronici	RENESAS [Renesas Technology Corp]

Homepage	http://www.renesas.com

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Section 9 I/O Ports

Rev.4.00 Sep. 18, 2008 Page 281 of 872

REJ09B0189-0400

Section 9 I/O Ports

9.1

Overview

The H8S/2214 Group has ten I/O ports (ports 1, 3, 7, and A to G), and two input-only ports (ports

4 and 9).

Table 9.1 summarizes the port functions. The pins of each port also have other functions.

Each port includes a data direction register (DDR) that controls input/output (not provided for the

input-only ports), a data register (DR) that stores output data, and a port register (PORT) used to

read the pin states.

Ports A to E have an on-chip MOS input pull-up function, and in addition to DR and DDR, have a

MOS input pull-up control register (PCR) to control the on/off status of the MOS input pull-ups.

Ports 3 and A include an open-drain control register (ODR) that controls the on/off status of the

output buffer PMOS.

All the ports can drive a single TTL load and 30 pF capacitive load.

The

IRQ pins and external expansion interrupt input pins are Schmitt-triggered inputs.

Block diagrams of each port are shown in appendix C, I/O Port Block Diagrams.

H8S/2214 Scheda tecnica(PDF) 341 Page - Renesas Technology Corp