Technical Summary: Philips 83C550 Microcontroller

Overview

The Philips 83C550 is a high-performance microcontroller based on the 80C51 architecture, fabricated using Philips' advanced high-density CMOS technology. This technology combines the speed and density of HMOS with the low power consumption of CMOS, making it ideal for a wide range of embedded applications. The microcontroller features an epitaxial substrate that minimizes latch-up sensitivity, ensuring robust performance in demanding environments.

The 83C550 is part of the 8XC550 family, which includes ROM (83C550), EPROM (87C550), and ROMless (80C550) variants. It is designed for applications requiring high-speed processing, efficient power management, and versatile peripheral integration.

Features

Core Architecture

• 80C51-based architecture with enhanced functionality.
• 4k × 8 ROM (83C550) or 4k × 8 EPROM (87C550) for program storage.
• 128 × 8 RAM for data storage and processing.
• Boolean processor for efficient bit manipulation.

Peripheral Integration

• Eight channels of 8-bit A/D converter for analog signal acquisition.
• Two 16-bit counter/timers for precise timing and event counting.
• Watchdog timer for system reliability and fault recovery.
• Full-duplex serial channel (UART) for communication with external devices.

Memory and Addressing

• 64k ROM and 64k RAM addressing capability for expanded memory requirements.

Power Management

• Idle mode for reduced power consumption during inactive periods.
• Power-down mode for minimal power usage when the system is dormant.

Compatibility and Performance

• CMOS and TTL compatible for seamless integration with mixed-signal systems.
• Single speed range at V_CC = 5V ±10% (3.5 to 16MHz).
• Extended temperature ranges for operation in harsh environments.
• OTP (One-Time Programmable) package option available for prototyping and production.

Applications

The Philips 83C550 microcontroller is suitable for a broad spectrum of applications, including but not limited to:

• Industrial automation: Control systems, sensor interfacing, and motor control.
• Consumer electronics: Home appliances, audio equipment, and remote controls.
• Automotive systems: Engine management, dashboard displays, and safety systems.
• Medical devices: Portable diagnostic equipment and patient monitoring systems.
• Communication systems: Modems, routers, and serial communication devices.

Electrical Characteristics

Operating Conditions

• Supply voltage (V_CC): 5V ±10%.
• Operating frequency: 3.5MHz to 16MHz.
• Temperature ranges:
  • Commercial: 0°C to +70°C.
  • Industrial: -40°C to +85°C.

Power Consumption

• Active mode: Current consumption varies with clock frequency.
• Idle mode: Reduced power consumption with CPU inactive but peripherals active.
• Power-down mode: Minimal power usage with only RAM retention.

I/O Characteristics

• CMOS/TTL compatible I/O pins: Supports direct interfacing with both CMOS and TTL logic levels.
• High-current drive capability: Suitable for driving LEDs and small relays.

Package Information

Available Packages

• Plastic Dual In-Line Package (PDIP): SOT129-1.
• Plastic Leaded Chip Carrier (PLCC): SOT187-2.

Ordering Information

The 83C550 is available in multiple configurations, including ROM, EPROM, and ROMless variants. Below is a summary of ordering options:

• P83C550EBP: ROM version, PDIP package, 0°C to +70°C, 3.5 to 16MHz.
• P83C550EBA: ROM version, PLCC package, 0°C to +70°C, 3.5 to 16MHz.
• P83C550EFA: ROM version, PLCC package, -40°C to +85°C, 3.5 to 16MHz.
• OTP (One-Time Programmable) options: Available for prototyping and low-volume production.

Package Dimensions

• PDIP (SOT129-1): Standard 40-pin dual in-line package.
• PLCC (SOT187-2): 44-pin leaded chip carrier with J-lead configuration.

Conclusion

The Philips 83C550 microcontroller is a versatile and high-performance solution for embedded systems requiring robust processing, efficient power management, and extensive peripheral integration. Its 80C51-based architecture, combined with advanced CMOS technology, makes it suitable for a wide range of industrial, consumer, automotive, and medical applications. With multiple package options and temperature ranges, the 83C550 offers flexibility for diverse design requirements.