Section 1. Usb And Ps/2 Multimedia Keyboard Interface; Introduction; Overview - Motorola M68HC08 Designer Reference Manual

Designer Reference Manual — DRM014

Section 1. USB and PS/2 Multimedia Keyboard Interface

1.1 Introduction

1.2 Overview

DRM014 — Rev 0
MOTOROLA
Freescale Semiconductor, Inc.
This manual describes a reference design of a Universal Serial Bus and
PS/2 multimedia keyboard interface for Microsoft Windows by using the
MC68HC908JB8.
For the full MC68HC908JB8 specification, please refer to the data sheet,
Motorola order number: MC68HC908JB8/D.
The Motorola MC68HC908JB8 is a member of the HC08 Family of
microcontrollers (MCUs). The features of the MC68HC908JB8 include a
configured Universal Serial Bus (USB) or PS/2 interface, which makes
this MCU suited for personal computer Human Interface Devices (HID),
such as mice and keyboards. The MC68HC908JB8 is available in
several packages to fit into various applications. A multimedia keyboard
with USB and PS/2 interface is demonstrated using the MC68HC908JB8
with a 44-pin QFP package. The main features of the keyboard include:
• Fully USB specification 1.1 compliant
• USB or PS/2 interface auto detect
• Windows 98, ME and 2000 compatible
• Power management keys (power, wake and sleep) support
• Multimedia key support
• In-circuit programming for firmware modification
USB and PS/2 Multimedia Keyboard Interface
For More Information On This Product,
Go to: www.freescale.com
Designer Reference Manual
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