PIC16F876A-I/SP

Program Memory Type:	FLASH
Base Part Number:	PIC16F876A
Supplier Device Package:	28-SPDIP
Package / Case:	28-DIP (0.300", 7.62mm)
Operating Temperature:	-40°C ~ 85°C (TA)
Oscillator Type:	External
Data Converters:	A/D 5x10b
Voltage - Supply (Vcc/Vdd):	4 V ~ 5.5 V
RAM Size:	368 x 8
EEPROM Size:	256 x 8
Series:	PIC® 16F
Program Memory Size:	14KB (8K x 14)
Number of I/O:	22
Peripherals:	Brown-out Detect/Reset, POR, PWM, WDT
Connectivity:	I²C, SPI, UART/USART
Speed:	20MHz
Core Size:	8-Bit
Core Processor:	PIC
Part Status:	Active
Packaging:	Tube

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Introduction

PIC16F876A-I/SP is a powerful and cost-effective microcontroller (MCU) manufactured by Microchip Technology Inc. It is widely used in embedded applications, such as industrial automation, consumer electronics, medical equipments and transportation. It is based on the enhanced 14-bit RISC architecture and a powerful 8-bit processor. The main features include 8 Kbytes of EEPROM, large RAM capacity, Capture/Compare/PWM (CCP) module, and numerous general-purpose I/O (GPIO) pins. Moreover, the device provides several communication capabilities, including SPI, I2C, and USART.

Application Field

As a powerful MCU, PIC16F876A-I/SP can be used for a variety of applications. It can be used for industrial automation, such as HVAC systems, motor control, and sensor interface. As well, it can be used for consumer electronics, such as smart home appliances and toy controllers. In healthcare applications, it can be used for portable medical instruments, calibration and health monitoring devices. In the transportation sector, it is used for vehicular applications, such as instrument clusters and body-level controllers.

Features

PIC16F876A-I/SP is equipped with 8 Kbytes of EEPROM and a RAM capacity of up to 512 Kbytes. In addition, the device provides Peripheral Interface Controller (PIC) support and high-speed multitasking, allowing the user to take advantage of high-performance real-time operations. It also supports CRC-8, DI and SPI serial buses, as well as I2C and USART communications. In addition, the device features Capture/Compare/PWM (CCP) module, which is a high-performance peripheral that allows the user to configure a variety of PWM signals, and receives input signals to generate pulse-width modulation (PWM) output to control devices.

Working Principle

PIC16F876A-I/SP microcontrollers are based on a simplified instruction set computer (SISC) architecture, which means that it operates on a set of instructions in a predetermined sequence. The instructions are stored in the program memory, which is then executed by the controller. Thus, when a program is uploaded into the MCU, it will run sequentially, which is referred to as “threaded mode” in the software. The basic flow of operation is to take an instruction from memory, decode it, execute the command, and then fetch the next instruction. At the heart of the device is the CPU, which has two main functions called the "fetch" and "execute" cycles. In the fetch cycle, the first instruction is taken from memory, decoded and then executed. In the execute cycle, once the instruction has been decoded, the command associated with that instruction is executed accordingly. Each instruction is generally in the form of "opcode, operands", which means it is a combination of letters or numbers that represents an operation, and the data that the operation will involve. In addition to the CPU, there are several other peripherals that the device provides, such as timers, capturing devices, and compare registers. The timers are used to generate programmable signals to control the speed of operations, and capture devices are used to capture and store the on-time and the off-time of input signals. The compare registers are used to monitor the values of variables and can be used to trigger interrupts when certain conditions are met.

Conclusion

In conclusion, PIC16F876A-I/SP is a highly versatile microcontroller, which is widely used in a variety of applications. It is based on a 14-bit RISC architecture and provides 8K of EEPROM, numerous GPIO pins, and several communication capabilities. It also features a powerful 8-bit processor, Capture/Compare/PWM module and a wide range of peripherals. The microcontroller provides an efficient and cost-effective solution for embedded applications.

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