16C71

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PIC16C71 Technical Summary

Overview

The PIC16C71 is a high-performance 8-bit microcontroller from Microchip Technology, featuring a RISC-based architecture optimized for embedded control applications. It combines a powerful CPU with integrated peripherals, making it suitable for a wide range of industrial, automotive, and consumer applications. The device is part of the PIC16C7X family, known for its low power consumption, ease of use, and robust performance.

Key Features

• High-Performance RISC CPU: Efficient execution with a reduced instruction set (only 35 single-word instructions).
• Single-Cycle Instructions: Most instructions execute in a single clock cycle (except for program branches).
• Analog-to-Digital Converter (ADC): Integrated 8-bit ADC for sensor interfacing.
• Timer Module: Includes Timer0 with an 8-bit prescaler for flexible timing operations.
• I/O Ports: Multiple configurable digital I/O pins for interfacing with external devices.
• Low Power Consumption: Supports sleep modes and power-saving features.
• On-Chip Oscillator: Configurable for various clock sources (RC, XT, HS, LP).
• Wide Operating Voltage: Typically operates between 2.5V and 6.0V.
• EEPROM Data Memory: Some variants include non-volatile data storage.
• Robust Development Support: Compatible with MPLAB IDE and third-party tools.

Applications

The PIC16C71 is widely used in embedded systems requiring analog signal acquisition, timing control, and low-power operation. Common applications include:

• Sensor interfaces (temperature, pressure, light)
• Motor control systems
• Consumer electronics (remote controls, toys)
• Automotive control modules
• Battery-powered devices
• Industrial automation
• Home appliances

Electrical Characteristics

Absolute Maximum Ratings

• Supply Voltage (V_DD): -0.3V to +7.5V
• Input Voltage (V_IN): -0.3V to V_DD + 0.3V
• Operating Temperature: -40°C to +85°C (industrial)
• Storage Temperature: -65°C to +150°C

Recommended Operating Conditions

• Supply Voltage (V_DD): 2.5V to 6.0V
• Clock Frequency: DC to 20 MHz (dependent on voltage)
• ADC Reference Voltage: V_DD or external reference

DC Characteristics

• Input Low Voltage (V_IL): ≤ 0.15 V_DD
• Input High Voltage (V_IH): ≥ 0.25 V_DD
• Output Low Voltage (V_OL): ≤ 0.6V (I_OL = 8.5 mA)
• Output High Voltage (V_OH): ≥ V_DD - 0.7V (I_OH = -3.0 mA)

AC Characteristics

• Instruction Cycle Time: 200 ns (at 20 MHz)
• Timer0 Clock Input Frequency: DC to 50 MHz
• ADC Conversion Time: 20 μs (typical)

Package Information

The PIC16C71 is available in multiple package options to suit different PCB layouts and thermal requirements:

• PDIP (Plastic Dual In-Line Package): 18-pin, 0.3" width
• SOIC (Small Outline IC): 18-pin, 0.15" width
• SSOP (Shrink Small Outline Package): 20-pin, compact footprint

Pinout Summary (18-Pin PDIP Example)

• RA0-RA3: Multiplexed analog/digital I/O
• RB0-RB7: Digital I/O with interrupt-on-change
• OSC1/OSC2: Clock oscillator pins
• MCLR: Master clear (reset) input
• V_DD/V_SS: Power supply and ground

Development Support

Microchip provides extensive development tools for the PIC16C71, including:

• MPLAB IDE: Integrated development environment with simulator and debugger
• PICkit™ Programmers: Low-cost in-circuit programming
• Third-Party Compilers: Support for C and assembly language development
• Application Notes: Detailed reference designs and code examples

Conclusion

The PIC16C71 offers a balanced combination of performance, power efficiency, and peripheral integration, making it a versatile choice for cost-sensitive embedded applications. Its RISC architecture ensures rapid development cycles, while the integrated ADC and timers reduce external component count. With robust development tools and long-term availability, the PIC16C71 remains a reliable solution for 8-bit control systems.

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