COP87L22CJ 8-Bit Microcontroller Technical Summary

Overview

The COP87L22CJ is an advanced 8-bit microcontroller featuring a memory-mapped architecture with versatile I/O capabilities and robust system protection features. Designed for low-power operation across a wide voltage range, this microcontroller combines high performance with flexible configuration options, making it suitable for a variety of embedded control applications.

With its efficient instruction set architecture, the device delivers 1 μs instruction cycle time at maximum clock speed. The integrated peripheral set including serial communication interfaces, timer/counter functions, and analog comparators provides comprehensive system control capabilities in a single package solution.

Key Features

• 8-bit Memory Mapped Architecture: Efficient memory organization for optimal code density and performance
• MICROWIRE/PLUS™ Serial I/O: Enhanced serial communication interface for peripheral expansion
• 16-bit Timer/Counter with Capture: Flexible timing operations with input capture capability
• Multi-Source Interrupt System: Supports prioritized interrupt handling for real-time responsiveness
• Integrated Analog Comparator: On-chip analog signal comparison capability
• Brown-Out Protection: Automatic reset protection during power supply fluctuations
• Multi-Input Wakeup: Low-power mode with multiple wakeup sources
• Wide Operating Voltage: 2.7V to 5.5V range for battery-powered applications
• Configurable I/O Pins: Software-selectable pin functions for application-specific optimization

Applications

The COP87L22CJ is designed for a broad range of embedded control applications, including:

• Consumer electronics and appliances
• Industrial control systems
• Automotive electronics
• Sensor interfaces and data acquisition
• Power management systems
• Security systems
• Medical devices
• Internet of Things (IoT) edge devices

The device's combination of low-power operation, robust protection features, and flexible I/O configuration makes it particularly suitable for battery-powered and mission-critical applications where reliability is paramount.

Electrical Characteristics

Absolute Maximum Ratings

• Supply Voltage (VDD): -0.3V to +6.0V
• Input Voltage (any pin): -0.3V to VDD+0.3V
• Operating Temperature Range: -40°C to +85°C
• Storage Temperature Range: -65°C to +150°C

Recommended Operating Conditions

• Supply Voltage Range: 2.7V to 5.5V
• Operating Temperature: -40°C to +85°C
• Clock Frequency: 0 to 4MHz (VDD=2.7V to 5.5V)

DC Characteristics

• Supply Current (Active Mode @ 4MHz): 2.5mA typical
• Supply Current (Standby Mode): 10μA typical
• Input High Voltage: 0.7VDD min
• Input Low Voltage: 0.3VDD max
• Output High Voltage (Ioh = -10μA): VDD-0.7V min
• Output Low Voltage (Iol = 1.6mA): 0.4V max

AC Characteristics

• Instruction Cycle Time: 1μs @ 4MHz
• MICROWIRE/PLUS Clock Frequency: 1MHz max
• Timer Input Frequency: 1MHz max
• Reset Pulse Width: 10μs min

Package Information

28-Pin Plastic DIP (CJ Package)

• Package Type: PDIP-28
• Dimensions: 36.32mm x 13.97mm (including leads)
• Lead Pitch: 2.54mm
• Lead Count: 28
• Material: Molded Plastic
• Operating Temperature: -40°C to +85°C
• Moisture Sensitivity Level (MSL): 3

Pin Configuration

The 28-pin package includes the following pin functions:

• 8 general-purpose I/O ports with multiple alternate functions
• Power supply (VDD) and ground (VSS) pins
• Reset input with internal pull-up
• Clock input/output pins
• MICROWIRE/PLUS interface pins (SI, SO, SK)
• Timer/counter input/output pins
• Comparator input pins
• Multi-input wakeup pins

Functional Description

Core Architecture

The COP87L22CJ features an 8-bit CPU core with a memory-mapped architecture that provides efficient access to both program and data memory. The instruction set is optimized for control applications, featuring single-cycle execution for most instructions. The core includes an arithmetic logic unit (ALU), program counter, stack pointer, and status register.

Memory Organization

The microcontroller implements a unified memory space with:

• Up to 4KB of program memory (ROM)
• 128 bytes of data memory (RAM)
• Memory-mapped I/O registers
• Special function registers for peripheral control

Peripheral Features

The integrated peripherals include:

• MICROWIRE/PLUS Interface: Synchronous serial interface supporting both master and slave modes with clock speeds up to 1MHz
• 16-bit Timer/Counter: Configurable as timer or event counter with input capture capability
• Analog Comparator: Single comparator with software-selectable reference and hysteresis options
• Multi-Input Wakeup: Configurable wakeup from low-power modes using multiple input signals
• Brown-Out Detection: Automatic reset generation when supply voltage falls below threshold

Development Support

The COP87L22CJ is supported by a comprehensive development ecosystem including:

• In-circuit emulators for real-time debugging
• C compilers and assemblers
• Evaluation boards with prototyping areas
• Programming tools for production flashing
• Application notes and reference designs

Ordering Information

The device is available in several variants:

• COP87L22CJ: 28-pin PDIP package, industrial temperature range
• COP87L22CJ-28: Tape and reel packaging option
• COP87L22CJ/883: Military-grade version with extended temperature range