Holtek HT48R70A-1 - User Manual

HT48R10A-1, HT48R30A-1,
HT48R50A-1, HT48R70A-1,
HT48RU80
I/O Type MCU
Handbook
Third Edition
June 2006
Copyright Ó 2006 by HOLTEK SEMICONDUCTOR INC. All rights reserved. Printed in Taiwan. No part of this publication
may be reproduced, stored in a retrieval system, or transmitted in any form by any means, electronic, mechanical photo
-
copying, recording or otherwise without the prior written permission of HOLTEK SEMICONDUCTOR INC.

Holtek HT48R70A-1 Specifications

General

Architecture	8-bit
Max CPU Speed	8 MHz
Operating Temperature	-40°C to +85°C
Timers	1 x 8-bit
Communication Interfaces	UART, I2C

Summary

Chapter 1 Hardware Structure

Microcontroller Features

Pin Assignments and Descriptions

Electrical Characteristics

Covers Absolute Maximum Ratings, DC, and AC characteristics vital for device operation.

System Architecture and Clocking

Key Peripherals: UART and Interrupts

Focuses on Interrupt Control Registers, Timer/Event Counters, and UART functionality.

Reset and Initialization Procedures

Details various reset types (Power-on, RES, LVR, WDT) and their effects on internal registers.

Watchdog Timer and Configuration Options

Describes the watchdog timer, its sources, and configurable options for system setup.

Chapter 2 Instruction Set Introduction

Instruction Set Overview

Instruction Timing and Data Transfer

Branching and Control Flow

Chapter 3 Instruction Definition

Arithmetic and Data Manipulation Instructions

Control Transfer Instructions

Chapter 4 Assembly Language and Cross Assembler

Chapter 5 MCU Programming Tools

HT-IDE Development Environment

Introduces the Holtek Integrated Development Environment for rapid MCU application development.

Holtek In-Circuit Emulator (HT-ICE)

Details the HT-ICE emulator for real-time emulation, debugging, and trace features.

OTP Programmer and System Configuration

Discusses OTP programming tools, adapter cards, and system setup requirements.

Installation Guide for HT-IDE3000

Chapter 6 Quick Start Guide

Create New Project and Add Files

Build Project and Program OTP Device

Details building the project, debugging, and programming OTP devices.

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