16C56S

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16C56S Technical Summary

Overview

The PIC16C56S 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 efficient power consumption and versatile peripheral integration. The device is built around a RISC-based CPU core, providing a streamlined instruction set for optimized performance in real-time applications.

Key highlights of the PIC16C56S include its compact memory organization, flexible I/O capabilities, and integrated timer module. The microcontroller is well-suited for cost-sensitive designs requiring reliable operation in industrial, automotive, and consumer electronics environments.

Features

• High-Performance RISC CPU: 8-bit architecture with 33 single-word instructions for efficient code execution.
• Memory Organization: 1K x 12-bit program memory (ROM) and 25 x 8-bit general-purpose registers (RAM).
• I/O Ports: 12 bidirectional I/O pins with individual direction control.
• Timer Module: 8-bit Timer0 (TMR0) with an 8-bit prescaler for flexible timing operations.
• Low Power Consumption: Optimized for battery-powered applications with power-saving modes.
• Wide Operating Voltage: Supports operation from 2.5V to 5.5V.
• Robust Peripheral Integration: Includes watchdog timer (WDT) for enhanced system reliability.
• Temperature Range: Industrial-grade operation from -40°C to +85°C.

Applications

The PIC16C56S is widely used in embedded control systems where reliability and cost-efficiency are critical. Common applications include:

• Consumer Electronics: Remote controls, small appliances, and toys.
• Industrial Automation: Sensor interfaces, motor control, and simple automation tasks.
• Automotive Systems: Basic control modules, lighting systems, and dashboard displays.
• Medical Devices: Portable diagnostic equipment and low-power monitoring systems.
• Security Systems: Keypad interfaces and alarm control units.

Electrical Characteristics

Absolute Maximum Ratings

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

DC Characteristics (VDD = 5V, TA = 25°C)

• Supply Current (IDD): 2 mA (typical) at 4 MHz
• Input Low Voltage (VIL): ≤ 0.15VDD
• Input High Voltage (VIH): ≥ 0.25VDD
• Output Low Voltage (VOL): ≤ 0.6V (IOL = 8.5 mA)
• Output High Voltage (VOH): ≥ 4.3V (IOH = -3.0 mA)

AC Characteristics

• Instruction Cycle Time: 1 µs (4 MHz clock)
• Timer0 Clock Frequency: DC to 50 MHz
• Reset Pulse Width: 100 ns (minimum)
• Watchdog Timer Period: 18 ms (nominal)

Package Information

The PIC16C56S is available in multiple package options to accommodate different design requirements:

• 18-Pin PDIP (Plastic Dual In-Line Package): Industry-standard through-hole package for prototyping and general-purpose use.
• 18-Pin SOIC (Small Outline Integrated Circuit): Surface-mount package for space-constrained applications.
• 20-Pin SSOP (Shrink Small Outline Package): Compact footprint for high-density PCB layouts.

Pin Configuration (18-Pin PDIP)

• RA0-RA3: Port A I/O pins (4-bit bidirectional)
• RB0-RB7: Port B I/O pins (8-bit bidirectional)
• MCLR: Master Clear (Reset) input
• OSC1/OSC2: Oscillator crystal input/output
• T0CKI: Timer0 clock input
• VDD/VSS: Power supply and ground

Development Support

Microchip provides comprehensive development tools for the PIC16C56S, including:

• MPLAB IDE: Integrated development environment for code writing, simulation, and debugging.
• PICkit Programmers: Affordable in-circuit debuggers and flash programmers.
• Third-Party Compilers: Support for assembly and C-language development.
• Application Notes: Detailed technical documentation for common use cases.

Conclusion

The PIC16C56S is a versatile and cost-effective microcontroller suitable for a wide range of embedded control applications. Its combination of RISC performance, low power consumption, and flexible I/O makes it an excellent choice for designers seeking a reliable 8-bit solution. With robust development support and multiple packaging options, the PIC16C56S continues to be a popular choice in the microcontroller market.

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