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Holtek HT48R50A-1 - User Manual

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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.

Table of Contents

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Holtek HT48R50A-1 Specifications

General IconGeneral
BrandHoltek
ModelHT48R50A-1
CategoryMicrocontrollers
LanguageEnglish

Summary

Chapter 1 Hardware Structure

Pin Assignment Details

Pin Description Guide

Absolute Maximum Ratings

DC Characteristics

Electrical characteristics under DC conditions, including voltage, current, and timing parameters.

AC Characteristics

System Architecture Overview

Arithmetic and Logic Unit (ALU)

Data Memory Overview

Special Function Registers

Status Register (STATUS)

Interrupt Control Registers

Timer;Event Counter Registers

Registers associated with timers/event counters.

Input;Output Ports and Control Registers

Registers for configuring and controlling I/O ports.

UART Registers

I;O Port Control Registers

External Interrupt Input

Explains external interrupt pins and their configuration.

External Timer Clock Input

Describes external timer input pins and their sharing.

Oscillator Options

System Clock Configurations

Describes the three methods for generating the system clock.

UART Pins

Timer;Event Counters

Configuring Timer;Event Counter Clock Source

Explains how to select internal or external clock sources for timers.

Timer Registers

Timer Control Registers

Configuring Timer Mode

Configuring Event Counter Mode

Explains how to configure timers for external event counting.

Configuring Pulse Width Measurement Mode

Interrupts Overview

Interrupt Registers

Registers for controlling and managing interrupts.

Interrupt Scheme Diagrams

Interrupt Priority

External Interrupt Configuration

Details on external interrupt configuration and triggering.

Timer;Event Counter Interrupts

UART Interrupt Handling

Details the UART interrupt mechanism.

Reset and Initialization Procedures

Reset Types

Describes the different types of microcontroller resets.

Watchdog Timer Operation

Power Down Mode and Wake-up

Explains how to enter and exit power-down mode.

Watchdog Timer Configuration

Universal Asynchronous Receiver;Transmitter (UART)

UART Features Summary

Lists the key features of the integrated UART module.

UART External Pin Interfacing

Explains the physical connection of UART pins.

UART Data Transfer Scheme

UART Status and Control Registers

USR Register Details

UCR2 Register Functionality

Setting Up and Controlling the UART

Enabling and Disabling the UART

Explains how to enable or disable the UART function.

Data, Parity, and Stop Bit Selection

UART Data Transmission

UART Receive Break Handling

Receiving Data Process

Steps to initiate data reception.

Managing Receiver Errors

Overrun Error (OERR Flag)

Explanation of overrun errors and the OERR flag.

Framing Error (FERR Flag)

Explanation of framing errors and the FERR flag.

Parity Error (PERR Flag)

Explanation of parity errors and the PERR flag.

Chapter 2 Instruction Set Introduction

Instruction Timing Details

Details the execution cycles for different instruction types.

Data Transfer Instructions

Arithmetic Operations

Covers add, subtract, increment, decrement instructions.

Chapter 3 Instruction Definition

HALT Instruction

Enters Power Down Mode.

Chapter 4 Assembly Language and Cross Assembler

Chapter 5 MCU Programming Tools

HT-IDE Development Environment

Holtek's integrated development environment.

Holtek In-Circuit Emulator (HT-ICE)

Describes the HT-ICE emulator for real-time emulation and debugging.

OTP Programmer and Adapter Card

Discusses tools for OTP device programming and adapter cards.

HT-ICE Interface Card Settings

Installation Guide

System Requirements for HT-IDE3000

Lists the hardware and software requirements for HT-IDE3000.

Hardware Installation Steps

Steps for physically installing the HT-ICE.

Software Installation Guide

Chapter 6 Quick Start Guide

Step 1: Create a New Project

Guide to creating a new project in HT-IDE3000.

Step 3: Build the Project

Steps to assemble and compile the project.

Step 4: Program OTP Device

Process for programming OTP devices.

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