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16C64B Technical Summary

Overview

The 16C64B is a high-performance, 8-bit microcontroller from Microchip Technology's PIC16C5X family. It is designed for embedded control applications, offering a robust architecture with integrated peripherals, efficient memory organization, and low-power operation. The device is built on Microchip's proven PIC® core, providing reliable performance for a wide range of industrial, automotive, and consumer applications.

Key Features

• 8-Bit RISC Architecture: Optimized for speed and efficiency with a reduced instruction set.
• Integrated Timer Module: Includes an 8-bit real-time clock/counter (TMR0) with an 8-bit prescaler.
• Wide Operating Voltage: Supports operation from 2.5V to 5.5V, making it suitable for battery-powered applications.
• Low Power Consumption: Features sleep mode and power-saving options for energy-sensitive designs.
• On-Chip Oscillator: Supports multiple clock configurations, including RC, XT, and LP modes.
• Robust I/O Ports: Multiple bidirectional I/O pins with programmable pull-up resistors.
• EEPROM Data Memory: Provides non-volatile storage for critical data.
• High-Endurance Flash Memory: Ensures reliable program storage with extended write/erase cycles.

Applications

The 16C64B is versatile and can be used in a variety of embedded control applications, including:

• Industrial Automation: Motor control, sensor interfacing, and process monitoring.
• Consumer Electronics: Remote controls, smart home devices, and wearable technology.
• Automotive Systems: Dashboard controls, lighting systems, and basic engine management.
• Medical Devices: Portable diagnostic equipment and patient monitoring systems.
• IoT and Edge Computing: Low-power sensor nodes and data acquisition modules.

Architectural Overview

The 16C64B is based on a modified Harvard architecture, separating program and data memory for improved performance. Key architectural features include:

• Program Memory: 1K x 12-bit Flash memory for firmware storage.
• Data Memory: 64 bytes of RAM for temporary data storage.
• Stack: 2-level hardware stack for subroutine handling.
• Instruction Set: 33 single-word instructions for efficient code execution.

Electrical Characteristics

Absolute Maximum Ratings

• Supply Voltage (V_DD): -0.3V to +7.0V
• Input Voltage (V_IN): -0.3V to V_DD + 0.3V
• Operating Temperature: -40°C to +85°C
• Storage Temperature: -65°C to +150°C

DC Characteristics

• Supply Current (Active Mode): 2 mA typical at 5V, 4 MHz
• Supply Current (Sleep Mode): 1 µA typical at 3V
• I/O Pin Leakage Current: ±1 µA max at 5V
• Output Drive Current: 25 mA sink/source per pin

AC Characteristics

• Instruction Cycle Time: 1 µs at 4 MHz
• Timer0 Clock Frequency: DC to 50 MHz
• Reset Pulse Width: 100 ns min

Package Information

The 16C64B is available in multiple package options to suit different design requirements:

• PDIP (Plastic Dual In-Line Package): 18-pin, 300 mil width
• SOIC (Small Outline IC): 18-pin, 150 mil width
• SSOP (Shrink Small Outline Package): 20-pin, 209 mil width
• QFN (Quad Flat No-Lead): 20-pin, 4x4 mm body

Pin Configuration (18-Pin PDIP Example)

• Pin 1: V_DD (Power Supply)
• Pin 2: RA0 (I/O Port A, Bit 0)
• Pin 3: RA1 (I/O Port A, Bit 1)
• Pin 4: RA2 (I/O Port A, Bit 2)
• Pin 5: RA3 (I/O Port A, Bit 3)
• Pin 6: T0CKI (Timer0 Clock Input)
• Pin 7: MCLR (Master Clear Reset)
• Pin 8: V_SS (Ground)
• Pins 9-16: Port B (RB0-RB7, Bidirectional I/O)
• Pin 17: OSC1 (Oscillator Input)
• Pin 18: OSC2 (Oscillator Output)

Development Support

Microchip provides comprehensive development tools for the 16C64B, including:

• MPLAB® X IDE: Integrated development environment for code writing, debugging, and simulation.
• PICkit™ Programmers: Affordable in-circuit debuggers and flash programmers.
• Hardware Emulators: Real-time emulation for complex debugging scenarios.
• Application Notes: Extensive documentation for common use cases and optimization techniques.

Conclusion

The 16C64B is a versatile, low-power microcontroller suitable for a broad range of embedded control applications. Its combination of performance, integrated peripherals, and development support makes it an excellent choice for designers seeking a reliable 8-bit solution. With multiple package options and robust electrical characteristics, it can be adapted to diverse project requirements while maintaining cost-effectiveness.

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