83C752

83C752 Microcontroller Technical Summary

Overview

The Philips 83C752/87C752 is an 8-bit microcontroller that combines the robust architecture of the 80C51 family with cost-effective packaging and low-power operation. Manufactured using Philips' high-density CMOS technology with an epitaxial substrate, this microcontroller is optimized for performance, power efficiency, and reliability. It is available in both erasable (quartz lid) and One-Time Programmable (OTP) plastic package options, making it suitable for prototyping as well as high-volume production.

Key Features

• 80C51 Core Architecture - Maintains compatibility with the widely-used 80C51 instruction set and peripherals.
• High-Density CMOS Technology - Provides low power consumption while maintaining high performance.
• Erasable (Quartz Lid) & OTP (Plastic) Options - Supports both development and production needs.
• On-Chip Program Memory - Includes ROM (83C752) or EPROM (87C752) for firmware storage.
• On-Chip Data Memory (RAM) - Provides fast access to temporary data storage.
• Multiple I/O Ports - Configurable digital I/O for interfacing with external components.
• Timers/Counters - Built-in timers for precise timing and event counting.
• Serial Communication Interface (UART) - Enables asynchronous serial data communication.
• Low-Voltage Operation - Suitable for battery-powered applications.

Applications

The 83C752 microcontroller is designed for embedded control applications where cost, power efficiency, and compact size are critical. Typical use cases include:

• Consumer Electronics - Remote controls, small appliances, and toys.
• Industrial Control Systems - Sensor interfacing, motor control, and automation.
• Automotive Electronics - Dashboard controls, lighting systems, and basic ECU functions.
• Medical Devices - Portable diagnostic equipment and wearable health monitors.
• Home Automation - Smart switches, thermostats, and security systems.

Electrical Characteristics

The 83C752 operates under the following electrical specifications:

• Supply Voltage (V_CC): 4.5V to 5.5V (standard operation)
• Power Consumption: Typically 10mA @ 5V, 12MHz (active mode)
• Idle Mode Current: <5mA (clock running, CPU halted)
• Standby Mode Current: <100µA (clock stopped)
• Operating Temperature Range: -40°C to +85°C (industrial grade)
• Clock Frequency: Up to 12MHz (crystal or external oscillator)
• I/O Port Sink/Source Current: 10mA per pin (max)

Package Information

The 83C752 is available in multiple package options to suit different application requirements:

• PLCC (Plastic Leaded Chip Carrier) - 28-pin, surface-mount package with J-leads.
• DIP (Dual In-line Package) - 28-pin, through-hole package for prototyping.
• SOIC (Small Outline IC) - 28-pin, surface-mount package for space-constrained designs.

Each package variant includes thermal and mechanical specifications to ensure reliable operation in different environments.

Memory Organization

The 83C752 features a structured memory architecture:

• Program Memory (ROM/EPROM) - 4KB (expandable externally)
• Data Memory (RAM) - 128 bytes (internal)
• Special Function Registers (SFRs) - Dedicated registers for peripheral control.

Peripheral Features

In addition to the core CPU, the 83C752 integrates several key peripherals:

• Two 16-bit Timer/Counters - For precise event timing and counting.
• Full-Duplex UART - Serial communication with configurable baud rates.
• Interrupt Controller - Supports multiple interrupt sources with priority levels.
• Watchdog Timer - Enhances system reliability by recovering from software faults.

Development Support

Philips provides comprehensive development tools for the 83C752, including:

• Assemblers & Compilers - For efficient code development.
• In-Circuit Emulators (ICE) - For real-time debugging.
• Evaluation Boards - For rapid prototyping.

Conclusion

The 83C752 microcontroller from Philips is a versatile and cost-effective solution for embedded control applications. Its combination of 80C51 compatibility, low power consumption, and integrated peripherals makes it ideal for a wide range of industries. With multiple package options and development support, it provides a flexible platform for both prototyping and mass production.