PIC16F873A-I/SS

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The PIC16F873A-I/SS (Microchip) is an 8-bit microcontroller that can be used in a wide range of applications and embedded systems. The microcontroller features an internal oscillator, four 8-bit ports and 256 bytes of SRAM memory. It also has an integral 8K program memory, 3-4K word EEPROM, and other popular peripherals such as I2C, SPI, UART, 1-wire, PWMs, and 8-bit A/D converters.

The PIC16F873A-I/SS microcontroller is suitable for use in embedded control systems, industrial automation, and medical, automotive, and aerospace applications. Its 8K program memory, 4K EEPROM, and 256 bytes of SRAM offer plenty of storage and execution space for sophisticated applications. Its high internal oscillator and integral peripherals provide high flexibility and low system cost.

The PIC16F873A-I/SS microcontroller incorporates a Harvard architecture, with separate instruction and data memory spaces. The instruction memory is divided into three banks. Bank 0 holds up to 8K of instructions with program counter (PC) being incremented after each instruction execution. Banks 1 and 2 are used to store temporary data and variables. The data memory is organized into 16 addressable sections, with each section storing up to 256 bytes of data. This data organization structure enables efficient and fast data movement between the CPU and the peripherals.

The microcontroller also features a range of different clock sources, including internal and external oscillators, and an RC oscillator for time-critical operations. The internal oscillator is accurate and stable, and can run up to 20 MHz. It is also compatible with all the PIC16F873A-I/SS\'s programming algorithms and techniques.

The PIC16F873A-I/SS has a range of general-purpose input/output (GPIO) ports and pins that can be configured in a number of different ways. The depending the application, the pins can be enabled as inputs, outputs, or open drain. In addition, they can also be configured with internal pull-up, analog input/output, PWM, and pulse-width modulation (PWM) generators. Depending on the chip’s pins configuration, its GPIOs can support logic levels of 0-5V, 0-6V, 0-8V, and 0-15V. A dedicated pin enables the user to enable and disable the internal pull-up resistors.

The PIC16F873A-I/SS integrates interrupt enable (IEN) inputs, following the local interrupt format. Each port on the microcontroller has up to three interrupt enable inputs, allowing the user to monitor up to 6 interrupt sources from within a single-chip. In addition, the microcontroller also provides real-time clock (RTC) for applications that require timekeeping support. The RTC has a maximum clock speed of 1MHz.

The PIC16F873A-I/SS is embedded with a wide range of other peripherals, such as four-channel A/D converters, eight-channel pulse-width modulation (PWM) generators, and eight-channel I2C communication interface. The A/D converters have an accuracy of up to 10bits, and can measure voltage levels from 0 to 5V. The PWM generators deliver a resolution of up to 10 bits, and can drive up to six outputs in pulse-width modulation (PWM) mode.

The PIC16F873A-I/SS microcontroller is equipped with an onboard watchdog timer (WDT) for safety and reliability purposes. This timer is enabled and started when the microcontroller is powered up, and is reset whenever the microcontroller successfully executes its intended operation. In addition, the microcontroller also has two software-enabled sleep modes, namely sleep and idle. The idle mode puts the chip into a low-power state, while the sleep mode puts it in a very low power state. The chip can wake up from sleep mode by an interrupt or by an external trigger.

Overall, the PIC16F873A-I/SS is a powerful 7-bit microprocessor that can be used in a wide range of embedded systems and applications. It is capable of running up to 20 MHz and incorporates many integrated peripherals, such as I2C, SPI, UART, and 1-wire communication interfaces. Its advanced GPIO and clock sources make it ideal for high-performance and low-power embedded systems, and its 8K instruction memory and 4K EEPROM offer plenty of storage and execution space for sophisticated control tasks.

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