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PIC16F877-04I/P - 8-bit 4MHz 14KB Flash MCU, 40-PDIP | Microchip
PIC16F877-04I/P

PIC16F877-04I/P - 8-bit 4MHz 14KB Flash MCU, 40-PDIP | Microchip

The Microchip Technology PIC16F877-04I/P is a CMOS FLASH-based 8-bit microcontroller from the PIC16F family, delivering 4 MHz maximum clock speed with 14 KB of on-chip Flash program memory (8K x 14 words), 368 bytes of RAM, and 256 bytes of EEPROM data memory, all packaged in a 40-pin PDIP through-hole footprint. The device executes instructions in a 200 ns single-cycle period and contains 33 digital I/O lines distributed across five ports (RA, RB, RC, RD, RE). An 8-bit MCU (microcontroller) is a small self-contained computer on a single integrated circuit that combines a CPU, non-volatile program memory (Flash/ROM), volatile data memory (RAM), non-volatile data storage (EEPROM), and a rich set of programmable peripherals. The 8-bit PIC16F877 sits in the power-management hierarchy between simple 8-bit controllers and 16/32-bit MCUs, offering a balance of low cost, deterministic interrupt response, and sufficient peripherals for embedded control in industrial, automotive, and consumer applications. The "I" suffix indicates the industrial temperature grade of -40C to +85C. Key differentiating features of the PIC16F877-04I/P include a 10-bit multi-channel Analog-to-Digital Converter (ADC) with eight input channels, two 8-bit and one 16-bit Timer/Counter modules, two Capture/Compare/PWM (CCP) peripherals, a USART for asynchronous and synchronous serial communication, and a Master Synchronous Serial Port (MSSP) configurable as SPI or I2C. The device also integrates a brown-out reset (BOR), power-on reset (POR), watchdog timer (WDT) with its own on-chip RC oscillator, and In-Circuit Serial Programming (ICSP) for field-upgradeable firmware. Architecturally, the PIC16F877 uses a RISC-style Harvard architecture with separate program and data buses, allowing simultaneous instruction fetch and operand access in a single instruction cycle. The 14-bit wide instruction word supports 35 single-word instructions, providing compact code density and deterministic timing. The 04 speed grade denotes a maximum oscillator frequency of 4 MHz, while the 20 MHz variant (PIC16F877-20I/P) doubles throughput at the cost of slightly higher power consumption. Typical applications include industrial control systems, sensor interfacing with the 10-bit ADC, motor control via the PWM modules, consumer electronics with USART-based device connectivity, educational platforms such as the PICDEM and development boards, automotive body electronics, and any legacy through-hole design requiring 5V-tolerant digital I/O. The 40-pin PDIP form factor remains popular for breadboarding, hobbyist projects, and through-hole manufacturing lines. When designing with the PIC16F877-04I/P, ensure the MCLR reset pin is pulled high through a resistor for normal operation and that the Vdd/Vss supply pair is bypassed with a 100 nF ceramic capacitor within a few millimeters of the IC. Designers transitioning to newer Microchip silicon should consider the PIC16F887, which provides pin-to-pin compatibility with additional peripherals, more memory, and an extended instruction set while preserving the same 40-pin PDIP footprint. This page synthesizes distributor pricing, drop-in PIC16F family alternatives, and practical design notes not found in the standalone manufacturer datasheet, accelerating engineering selection for legacy 8-bit embedded designs.

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PIC16F877-04I/PQ - 8-Bit 4MHz 14KB Flash MCU 44-MQFP | Microchip
PIC16F877-04I/PQ

PIC16F877-04I/PQ - 8-Bit 4MHz 14KB Flash MCU 44-MQFP | Microchip

The Microchip Technology PIC16F877-04I/PQ is a CMOS FLASH-based 8-bit microcontroller from the PIC16F family, delivering 4 MHz (200 ns instruction execution) performance with 14 KB (8K x 14) of on-chip Flash program memory in a 44-pin MQFP (10x10) package. It carries 368 bytes of RAM, 256 bytes of EEPROM, and 33 digital I/O pins. The "-04" suffix denotes the 4 MHz speed grade, and "I" denotes the industrial -40C to +85C temperature range, while "/PQ" specifies the 44-pin MQFP package. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory, working RAM, peripheral set, and I/O on one die. The PIC16F family uses Microchip's enhanced Harvard RISC architecture and occupies the mid-range tier of the PIC line, sitting between the baseline PIC10/12/16 and the high-performance PIC18/PIC24 families. Mid-range MCUs are widely used in embedded control where deterministic timing, low power, and simple peripheral sets are more important than raw MIPS - typical roles include sensor conditioning, user-interface driving, and protocol bridging. Key features include five built-in peripherals: a 10-bit 8-channel Analog-to-Digital Converter (ADC), two 8-bit timers plus one 16-bit timer, a Universal Synchronous Asynchronous Receiver Transmitter (USART), a Master Synchronous Serial Port (MSSP) supporting both SPI and I2C, and a Capture/Compare/PWM (CCP) module. The device operates from 2.0 V to 5.5 V and provides 25 mA source/sink per I/O, supporting direct LED driving. Only 35 single-word instructions simplify code development, while the 14-bit wide instruction word keeps the program counter at 8K address depth. The 44-pin MQFP (PQ) package exposes the full peripheral set, including two analog comparators and a parallel slave port, which are absent on the 28-pin PIC16F876. The 200 ns instruction cycle enables deterministic interrupt response suitable for motor-control and power-conversion loops. Brown-out Reset (BOR), Power-on Reset (POR), and a Watchdog Timer (WDT) protect against lock-ups in industrial environments. Typical applications include industrial automation controllers, HVAC and building-control systems, automotive body electronics, data-acquisition front ends, and consumer appliances. The 4 MHz speed grade is well matched to UART bridges, sensor hubs, and human-machine interface (HMI) key-scan matrices. The I-grade temperature range covers outdoor and factory-floor installations. Design consideration: pair the MCU with a 20 MHz resonator only if the -20 speed variant is selected; the -04 grade uses a 4 MHz crystal or resonator. In-Circuit Serial Programming (ICSP) requires dedicated RB6/RB7 pins, so do not repurpose them for outputs without isolating the programmer during field updates. The MQFP package needs a thermal pad copper pour for production wave-solder reliability. This page consolidates distributor pricing, same-family drop-in alternatives, and field-tested design notes that go beyond what the manufacturer datasheet alone provides, helping sourcing, design, and obsolescence teams evaluate the PIC16F877-04I/PQ in context.

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PIC16F877-04I/PT - 8-bit 4MHz MCU 14KB Flash 44-TQFP | Microchip
PIC16F877-04I/PT

PIC16F877-04I/PT - 8-bit 4MHz MCU 14KB Flash 44-TQFP | Microchip

The Microchip Technology PIC16F877-04I/PT is an 8-bit RISC CMOS FLASH-based microcontroller in a 44-pin TQFP (10x10 mm) package, operating at 4 MHz with up to 4 MIPS instruction throughput (one instruction per 4-clock cycle, hence 1 us per instruction at 4 MHz). The part integrates 14 KB (8K x 14 words) of on-chip FLASH program memory, 368 bytes of SRAM, and 256 bytes of EEPROM data memory. A microcontroller (MCU) is a single-chip computer containing a CPU core, program memory, data memory, and integrated peripherals such as timers, communication interfaces, and analog-to-digital converters. The PIC16F877 belongs to the mid-range PIC16 family, sitting within the broader taxonomy of 8-bit microcontrollers -> microcontrollers -> embedded processors -> semiconductors. It is widely regarded as one of the most popular learning and prototyping MCUs in the industry, with a 35-instruction RISC core that simplifies code development and debugging. Key features include 33 digital I/O pins, an 8-channel 10-bit Analog-to-Digital Converter (ADC), two 8-bit timers plus one 16-bit timer, a Watchdog Timer, and both synchronous and asynchronous serial ports configurable as SPI or I2C, plus a USART. The device operates from 2.0V to 5.5V across an industrial -40C to +85C temperature range, and supports In-Circuit Serial Programming (ICSP) plus In-Circuit Debugging (ICD) via dedicated pins. Architecturally, the PIC16F877 employs a Harvard architecture with separate program and data buses, allowing instruction fetch and data access to occur in the same clock cycle. The 14-bit instruction word and 8-bit data path are characteristic of the mid-range PIC16 core, and Microchip provides a mature MPLAB X IDE and XC8 toolchain for firmware development. The 'I' suffix denotes the industrial temperature grade. Typical applications include industrial control and automation nodes, sensor interface front-ends, educational development boards, low-end data loggers, motor control signal conditioning, and standalone instrumentation. It is also commonly used as a peripheral co-processor in designs where a host processor offloads real-time I/O tasks. The wide operating voltage range allows direct interfacing to 3.3V and 5V system buses with level-shifting minimized by careful pin-group configuration. When designing with the PIC16F877, ensure the MCLR reset pin is properly biased with the recommended pull-up and decoupling, and that the oscillator configuration bits match the selected crystal or external clock. Because the device's FLASH endurance is typically 1000 erase/write cycles minimum, design code should minimize EEPROM wear through wear-leveling techniques. Adding series resistance on the ICSP/ICD lines helps prevent programming-port damage during in-circuit debugging. This page synthesizes distributor pricing from DigiKey/Mouser/Octopart, drop-in and same-footprint alternatives, and practical design notes not consolidated in the manufacturer datasheet.

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PIC16F877-10E/L - 8-bit MCU, 14KB Flash, 44-PLCC | Microchip
PIC16F877-10E/L

PIC16F877-10E/L - 8-bit MCU, 14KB Flash, 44-PLCC | Microchip

The Microchip PIC16F877-10E/L is a powerful (200 ns instruction execution) yet easy-to-program CMOS Flash-based 8-bit microcontroller that packs Microchip's PIC architecture into a 44-lead PLCC (Plastic Leaded Chip Carrier) package with 10 MHz maximum operating frequency, 14 KB of Flash program memory, 368 bytes of SRAM, and 256 bytes of EEPROM data memory. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory, data memory, I/O peripherals, and timers on one die. The PIC16F family sits in Microchip's mid-range 8-bit portfolio and targets embedded control applications that need deterministic instruction execution, low power consumption, and a rich peripheral set within a small footprint - common across industrial automation, automotive body electronics, white goods, and consumer devices. Key features of the PIC16F877 include 33 digital I/O pins, an 8-channel 10-bit Analog-to-Digital converter (ADC), two Capture/Compare/PWM (CCP) modules that deliver up to two PWM channels, two additional 8-bit timers on top of Timer0 and Timer1, an Enhanced Universal Synchronous/Asynchronous Receiver Transmitter (EUSART), and a Synchronous Serial Port (SSP) configurable as either 3-wire SPI or 2-wire I2C. The device uses Harvard architecture with separate program and data buses for predictable throughput, RISC instruction set with 35 single-word instructions, and In-Circuit Serial Programming (ICSP) via two pins for in-field firmware updates. The -10E/L suffix denotes 10 MHz speed, Extended (-40C to +125C) temperature grade, and PLCC lead finish. Typical applications include industrial control systems, sensor signal conditioning, low-cost motor controllers, and educational development boards where the large Flash/RAM and the wide peripheral mix allow a single chip to replace discrete logic. When designing with the PIC16F877-10E/L, ensure decoupling of VDD with a 100 nF ceramic capacitor placed within 1 cm of each power pin. For new designs, Microchip's recommended successor is the PIC16F887, which is software- and pin-compatible with extended peripherals and more memory. This page synthesizes distributor stock data, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, with prices referenced as of 2026-10-22.

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PIC16F877-10E/P - 8-Bit 10MHz 14KB FLASH MCU | Microchip | DIP-40
PIC16F877-10E/P

PIC16F877-10E/P - 8-Bit 10MHz 14KB FLASH MCU | Microchip | DIP-40

The Microchip Technology PIC16F877-10E/P is a CMOS Flash-based 8-bit microcontroller in the PIC16F family, delivering 10 MHz maximum CPU clock (200 ns instruction cycle) from 14 KB of on-chip Flash program memory in a 40-pin PDIP package. It offers 368 bytes of RAM, 256 bytes of EEPROM, and 33 digital I/O pins organized across five ports (PORTA–PORTE), making it one of the most widely deployed mid-range PIC microcontrollers for embedded control. The -10E suffix indicates the 10 MHz speed grade and the Extended (E) industrial temperature range of -40 °C to +125 °C. An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit data path, integrating a CPU core, program memory, data RAM, non-volatile EEPROM, timers, and configurable peripherals. The PIC16F877 belongs to the mid-range PIC16 family, which sits hierarchically between the baseline PIC10/12/16/17 families and the high-performance PIC18/dsPIC33 families within Microchip's 8-bit MCU portfolio. It executes a RISC instruction set of only 35 single-word instructions, which simplifies code development, accelerates interrupt latency, and enables deterministic real-time behavior ideal for control loops. Key features include an integrated 10-bit Analog-to-Digital Converter (ADC) with 8 input channels, two 8-bit timers (Timer0, Timer2) plus one 16-bit timer (Timer1), two Capture/Compare/PWM (CCP) modules, a Synchronous Serial Port (SSP) configurable as either SPI or I²C, a USART for asynchronous or synchronous serial communication, and a parallel Slave Port (PSP) for external bus interfacing. The device also integrates a brown-out reset (BOR), power-on reset (POR), watchdog timer (WDT), and in-circuit serial programming (ICSP) capability, allowing field firmware updates without removing the device from the board. Architecturally, the PIC16F877 uses a Harvard memory architecture with separate program and data buses, a 14-bit instruction word, and a hardware stack 8 levels deep. The Harvard layout allows simultaneous instruction fetch and data access, giving the 10 MHz oscillator a true 5 MIPS throughput. In-circuit debugging (ICD) is supported through two of the I/O pins, enabling developers to step through code in real time using Microchip's MPLAB ICD tools. The Flash-based program memory supports 100,000 erase/write cycles typical, and the EEPROM supports 1,000,000 cycles, providing long-term reliability for parameter storage. Typical applications include industrial automation and motor control (HVAC, fans, small pumps), consumer electronics (washing machines, microwave ovens, remote controls), educational development boards and hobbyist projects, automotive body and accessory modules (non-safety-critical), and instrument front panels with mixed digital/analog I/O. The wide operating voltage range (typically 2.0 V to 5.5 V for the -10E variant) allows battery-powered and 5 V regulated designs alike. When designing with this part, always reserve the ICSP clock (RB6) and data (RB7) pins for the programming/debug interface; tying them to unrelated loads can prevent in-system programming. Decouple VDD with a 100 nF ceramic placed within 5 mm of the supply pin, and use the MCLR reset pin with the recommended 10 kΩ pull-up and a 100 nF delay capacitor for reliable POR behavior. The extended temperature grade (-E) makes this part preferable over the commercial-grade (-I) variant for outdoor enclosures or industrial cabinets.

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PIC16F877-10E/PQ - 8-bit 10MHz 14KB FLASH MCU 44-MQFP | Microchip
PIC16F877-10E/PQ

PIC16F877-10E/PQ - 8-bit 10MHz 14KB FLASH MCU 44-MQFP | Microchip

The Microchip Technology PIC16F877-10E/PQ is a CMOS FLASH-based 8-bit PIC16 microcontroller (MCU) executing one instruction every 200 nanoseconds at 10 MHz, packaged in a 44-pin MQFP (10x10 mm) with 14 KB (8K x 14 words) of on-chip program FLASH, 368 bytes of RAM and 256 bytes of EEPROM. It features 33 digital I/O lines organized across five ports (PORTA-PORTE), a 10-bit multi-channel Analog-to-Digital Converter (ADC) with up to 8 input channels, three timer modules, two capture/compare/PWM modules, a synchronous/asynchronous serial port (USART/SCI), a Master Synchronous Serial Port (MSSP) supporting SPI and I2C, and a parallel slave port. A microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory, working RAM, peripherals and I/O. It sits at the bottom of the embedded compute hierarchy: MCU -> embedded processor -> microprocessor -> CPU -> compute platform. The PIC16F877 family is the 8-bit branch of Microchip's PIC architecture, designed for deterministic real-time control where predictable instruction timing, low cost and ease of in-system programming matter more than raw MIPS. The 'F' suffix denotes FLASH program memory, enabling rapid firmware iteration via ICSP. Key differentiating specifications include 200 ns instruction cycle time, 14 KB self-programmable FLASH, hardware USART plus SPI/I2C, a 10-bit ADC, ICD (In-Circuit Debugger) support, and a wide 2.0 V to 5.5 V operating voltage range that simplifies battery-powered designs. The 44-pin MQFP footprint supports surface-mount assembly on production PCBs while exposing enough I/O and analog channels for complex sensor and actuator interfaces. The PIC16F877 architecture uses a Harvard RISC core with separate program and data buses, a hardware multiplier-free instruction set, and direct/indirect addressing modes that simplify C and assembly code generation. In-System Programming (ICSP) via two pins allows firmware updates after PCB assembly, and the Brown-Out Reset (BOR) and Power-On Reset (POR) circuitry protect against corrupted startup states - both critical for unattended industrial installations. Typical applications include industrial automation controllers, sensor data acquisition nodes, motor control (PWM-driven DC and stepper drivers), HVAC thermostat interfaces, instrumentation front-ends, and embedded educational platforms. The wide voltage tolerance and robust peripheral mix also suit automotive body electronics, security panels, and small home appliances. When designing with this device, plan oscillator margins for the 10 MHz speed grade (use a 4x PLL-friendly crystal if higher throughput is needed). Allocate one port pin to MCLR for proper reset, place decoupling capacitors within 5 mm of each VDD/VSS pair, and ensure ADC reference decoupling to obtain the documented 10-bit linearity. This page synthesizes verified distributor pricing, parametric alternatives, pinout reference, and practical design notes not consolidated on any single distributor page - giving engineers a faster sourcing decision for both new designs and legacy product maintenance.

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PIC16F877-10E/PT - 10MHz 8-Bit MCU, 14KB Flash | Microchip
PIC16F877-10E/PT

PIC16F877-10E/PT - 10MHz 8-Bit MCU, 14KB Flash | Microchip

The Microchip Technology PIC16F877-10E/PT is a 8-bit CMOS FLASH-based microcontroller from the PIC16F family, running up to 10 MHz instruction execution (200 ns instruction cycle) and integrating 14 KB (8K x 14 words) of on-chip program FLASH, 368 bytes of RAM and 256 bytes of EEPROM data memory, all in a 44-pin TQFP (10x10 mm) surface-mount package. The "-10E" speed grade denotes a 10 MHz enhanced operating temperature variant specified from -40C to +125C. An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit data path, integrating CPU core, program memory (ROM/FLASH), working RAM, non-volatile EEPROM and a set of on-chip peripherals (timers, ADC, communications ports, GPIO). Within the broader taxonomy, 8-bit MCUs sit below 16-bit and 32-bit microcontrollers in compute and address-space capability, but offer the lowest cost, simplest toolchain and lowest power for control-oriented tasks. The PIC16F family, introduced by Microchip in the late 1990s, became one of the most widely deployed mid-range 8-bit platforms and is still supported by the MPLAB X IDE and XC8 compiler. Key features of the PIC16F877 include 33 digital I/O lines across five ports (RA-RB-RC-RD-RE), an 8-channel 10-bit successive-approximation ADC, two 8-bit timers (Timer0, Timer2) plus one 16-bit timer (Timer1), two Capture/Compare/PWM (CCP) modules, a synchronous serial port configurable as either 3-wire SPI or 2-wire I2C, a USART for asynchronous serial, an 8-bit parallel slave port, and an ICD (In-Circuit Debug) interface. Brown-out Reset (BOR), Power-on Reset (POR), Watchdog Timer (WDT) with on-chip RC oscillator, and self-programming of the FLASH program memory are all supported. Architecturally, the PIC16F877 uses a Harvard-style RISC core with separate program and data buses, a hardware stack of 8 levels, and 35 single-word instructions. The 14-bit instruction word width is wider than the 8-bit data path, which lets a single instruction word encode an opcode plus an immediate operand or literal address. Power consumption is controlled via Sleep mode (CPU and most peripherals halted), several clock-source options including the internal RC oscillator, and an operating voltage range typically 4.0 V to 5.5 V (extended 2.0 V-5.5 V for the LF variant). Typical applications include industrial automation controllers, sensor-conditioning front ends, low-end human-machine interfaces (HMI), small appliances, motor-control loops using the CCP modules, data-logging with the ADC and internal EEPROM, and education/evaluation platforms where the 44-pin TQFP exposes all peripherals for breadboard-friendly prototyping. The on-chip self-programming capability also makes the part suitable for field-upgradeable embedded products. When designing with the PIC16F877-10E/PT, note that the 14 KB FLASH and 368-byte RAM are modest by 2026 standards, so projects requiring TCP/IP stacks, USB or graphical displays are better served by PIC18, PIC24, dsPIC33 or Cortex-M0+/M4 parts. For new designs, Microchip actively recommends migrating to the pin-compatible PIC16F887 or PIC16F877A, which offer more memory, additional peripherals and a wider operating voltage range, while preserving the same 40/44-pin pinout. This page synthesizes distributor pricing, drop-in same-package alternatives and practical design notes not found in the manufacturer datasheet, giving the engineer a one-stop reference for evaluating, sourcing and replacing this classic PIC16F family part.

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PIC16F877-20/L - 8-Bit 20MHz 14KB FLASH MCU 44-PLCC | Microchip
PIC16F877-20/L

PIC16F877-20/L - 8-Bit 20MHz 14KB FLASH MCU 44-PLCC | Microchip

The Microchip Technology PIC16F877-20/L is an 8-bit CMOS FLASH-based PIC microcontroller in a 44-pin PLCC (J-Lead) package, operating at up to 20 MHz with 14KB (8K x 14 words) of on-chip program memory. It executes a single instruction cycle in 200 ns while offering only 35 single-word instructions, making it one of the easiest PIC architectures to program and debug. The device integrates 368 bytes of RAM and 256 bytes of EEPROM data memory, providing local storage for both program variables and persistent calibration or configuration data. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (ROM/FLASH), working memory (RAM), and a set of peripherals such as timers, ADC, communication ports, and I/O pins. Within the broader semiconductor hierarchy, the PIC16F877 belongs to the PIC16 family -> 8-bit PIC microcontroller family -> Microcontroller -> Embedded Processor -> Semiconductor. Its RISC-style Harvard architecture separates program and data buses, which enables simultaneous instruction fetch and data access, improving throughput relative to von Neumann designs at the same clock rate. Key features of the PIC16F877-20/L include 33 digital I/O pins, a 10-bit multi-channel Analog-to-Digital Converter (ADC), two Capture/Compare/PWM (CCP) modules, a synchronous serial port (SSP) supporting SPI and I2C, a USART for asynchronous serial communication, and a parallel slave port for direct 8-bit bus attachment to external processors. An integrated watchdog timer with its own on-chip RC oscillator and a brown-out reset (BOR) circuit provide field-reliable operation in electrically noisy environments such as industrial control cabinets or automotive body modules. The '20' speed grade designates 20 MHz maximum clock; the '/L' suffix indicates the 44-pin PLCC package (J-Lead). Typical applications include industrial control panels, HVAC fan/blower controllers, sensor interface boards, vending machine logic, motor control front-ends, and educational prototyping where the PIC16 series has decades of tool-chain support. When designing with this part, pay attention to oscillator configuration (HS/RC modes), use decoupling capacitors on VDD/AVDD/VSS/AVSS within 1 cm of the pins, and respect the 5.5 V absolute maximum supply rating. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone, with all values cross-checked against the September 2026 web snapshot.

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PIC16F877-20/P - 8-Bit 20MHz 14KB Flash MCU 40-PDIP | Microchip
PIC16F877-20/P

PIC16F877-20/P - 8-Bit 20MHz 14KB Flash MCU 40-PDIP | Microchip

The Microchip Technology PIC16F877-20/P is a peripheral-rich 8-bit CMOS FLASH-based microcontroller in a 40-pin PDIP (DIP-40) through-hole package, executing instructions at 20MHz with a 200ns instruction cycle. It integrates 14KB of in-system programmable Flash program memory (8K x 14 words), 368 bytes of RAM, 256 bytes of EEPROM data memory, and 33 digital I/O pins. An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit data bus, optimized for embedded control where deterministic behavior, low cost, and minimal external components matter more than raw throughput. The PIC16F877 belongs to the PIC mid-range family, which sits between the baseline PIC10/12/16 and the enhanced PIC18 families in Microchip's taxonomy: PIC MCU -> PIC16 mid-range 8-bit MCU -> CMOS FLASH MCU -> embedded controller. This 200ns-instruction architecture executes 35 single-word instructions, making it easy to program in assembly or C (XC8). Key specifications include a 20MHz maximum clock, 14KB Flash, 368 bytes SRAM, 256 bytes EEPROM, 8 channels of 10-bit Analog-to-Digital converter, two Capture/Compare/PWM modules, a USART, MSSP configurable as SPI or I2C, two 8-bit timers plus one 16-bit timer, and a 25mA source/sink per I/O capability. The device operates from 4.0V to 5.5V across the industrial -40C to +85C range with 5V typical Vdd. The architecture combines a Harvard-style program/data bus split with a RISC-like instruction set, enabling deterministic interrupt latency and compact code density. The in-system programmable Flash allows firmware updates without removal from the application circuit, while the integrated ICD (In-Circuit Debug) pin pair supports MPLAB ICD debug hardware for real-time emulation. Typical applications include industrial control systems, HVAC controllers, security alarm panels, motor control loops, instrumentation, and educational/development platforms. The wide peripheral set and DIP-40 form factor make it especially common in legacy designs, hobbyist projects, and breadboard-friendly prototypes. Designers should plan for a stable 20MHz crystal or resonator on OSC1/OSC2, decoupling 100nF near each Vdd pin, and MCLR pull-up configuration during reset. Because the PIC16F877 family has been surpassed by the PIC16F887 (more memory, lower cost) and PIC16F1xxx enhanced cores, new designs should evaluate these drop-in successors unless the existing toolchain or firmware mandates the classic device. This page synthesizes distributor pricing, drop-in alternatives (PIC16F874A, PIC16F877A), and practical design notes not found in the manufacturer datasheet alone.

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PIC16F877-20/PQ - 8-Bit 20MHz 14KB MCU 44-QFP | Microchip
PIC16F877-20/PQ

PIC16F877-20/PQ - 8-Bit 20MHz 14KB MCU 44-QFP | Microchip

The Microchip Technology PIC16F877-20/PQ is an 8-bit CMOS Flash microcontroller operating at up to 20 MHz, with 14 KB of Flash program memory and 33 I/O pins in a 44-pin MQFP package measuring 10 x 10 mm. The device is designed for embedded control applications requiring deterministic timing, mixed digital and analog functions, and established Microchip PIC tooling. A microcontroller is a programmable semiconductor that integrates a processor core, memory, digital I/O, timers, serial interfaces, and optional analog conversion on one device. In the system hierarchy, the PIC16F877 belongs to the 8-bit MCU class, then to PIC16-family Flash microcontrollers. Its broad peripheral set allows one controller to supervise actuators, read sensors, communicate with external circuits, and implement control firmware without separate interface ICs. Key verified features include 256 bytes of EEPROM data memory, self-programming, eight 10-bit ADC channels, two additional timers, two capture/compare/PWM functions, and a synchronous serial port configurable for 3-wire SPI or 2-wire I²C. The 20 MHz grade provides a 50 ns instruction-cycle basis before considering instruction duration and peripheral clocking. The 33 I/O lines provide substantial board-level connectivity while remaining within the limits of a compact embedded design. The PIC16F877 architecture combines RISC-like single-word instructions with Flash program memory. Its peripheral partitioning supports protocol handling, timing, pulse-width modulation, and analog measurement without relying on a host processor. The eight-channel 10-bit ADC is useful for monitoring mixed-signal equipment, while EEPROM retains calibration values or configuration data. Self-programming can support applications that need controlled parameter updates after deployment. Typical uses include industrial controllers, data-acquisition equipment, motor and relay control, instrumentation, communications gateways, and compact embedded products. The 20 MHz rating is appropriate for real-time control loops when the firmware budget and interrupt latency satisfy the application. The 44-pin package requires careful escape routing but provides more I/O and peripheral connectivity than smaller MCU packages. Designers should use the manufacturer datasheet for the exact pin assignments, electrical limits, timing characteristics, and programming specification. PCB layout must preserve decoupling placement, oscillator stability, analog-reference integrity, and programming access. Because only distributor and manufacturer snippets were supplied here, unverified details remain explicitly marked in the specifications rather than inferred.

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PIC16F877-20/PT - 8-Bit 20MHz 14KB Flash MCU | Microchip
PIC16F877-20/PT

PIC16F877-20/PT - 8-Bit 20MHz 14KB Flash MCU | Microchip

The Microchip Technology PIC16F877-20/PT is an 8-bit CMOS FLASH-based microcontroller from the PIC16F family, operating at up to 20 MHz with 200 ns instruction cycle execution, packaged in a 44-pin TQFP (10x10 mm). It integrates 14 KB of FLASH program memory (8K x 14 words), 368 bytes of RAM, and 256 bytes of EEPROM data memory, providing a balanced on-chip memory profile for embedded control applications. What is a PIC16F microcontroller? The PIC16F family is Microchip's mid-range 8-bit RISC microcontroller series built on a Harvard architecture. It belongs to the broader category of microcontrollers (MCU), which are single-chip computers containing a CPU, memory, and peripherals. The PIC16F family is widely adopted in industrial control, consumer electronics, and educational markets due to its compact instruction set (only 35 single-word instructions), deterministic timing, and rich peripheral integration including ADC, PWM, and serial communication interfaces. Key features of the PIC16F877-20/PT include 33 digital I/O pins, an 8-channel 10-bit Analog-to-Digital Converter (ADC), 2 capture/compare/PWM modules, 2 additional 8-bit timers, a USART for asynchronous serial communication, and a synchronous serial port configurable as either 3-wire SPI or 2-wire I2C. It also features In-Circuit Debugging (ICD) support and self-programming capability via FLASH memory, enabling firmware updates in the field. Architecturally, the PIC16F877 uses a RISC CPU with single-cycle instruction execution (except program branches which take two cycles). All 35 instructions are single-word, simplifying code density. The 20 MHz clock input delivers 5 MIPS of throughput, sufficient for moderate real-time control loops. The device operates from 2.0 V to 5.5 V across the industrial temperature range (-40C to +85C). Typical applications include industrial automation controllers, sensor signal conditioning, motor control via PWM, data acquisition systems using the integrated 10-bit ADC, and embedded communication gateways leveraging USART, SPI, or I2C. It is also widely used in educational platforms and legacy product designs due to long-term stability of the PIC16F family. When designing with this part, note that the 14 KB FLASH is suited to firmware under approximately 8K instructions. The 44-pin TQFP (PT) package requires standard SMD reflow; if through-hole assembly is required, consider the PIC16F877-20/P variant in PDIP-40. The internal oscillator is not present, so an external crystal or clock source must be provided on OSC1/OSC2. This page synthesizes distributor pricing, drop-in alternative MPNs sharing the 44-TQFP package, and practical design notes not consolidated on the manufacturer datasheet alone.

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PIC16F877-20I/L - 8-Bit 20MHz 14KB Flash MCU 44-PLCC | Microchip
PIC16F877-20I/L

PIC16F877-20I/L - 8-Bit 20MHz 14KB Flash MCU 44-PLCC | Microchip

The Microchip Technology PIC16F877-20I/L is an 8-bit RISC Flash microcontroller delivering 20 MHz CPU performance with 200 ns instruction execution, packaged in a 44-pin PLCC (J-Lead, 16.59x16.59 mm) form factor. The device integrates 14 KB of in-system programmable Flash program memory, 368 bytes of SRAM data memory, and 256 bytes of EEPROM, making it one of the most popular mid-range PIC microcontrollers for industrial control, instrumentation, and embedded-learning applications. Key features include 33 digital I/O pins, a 10-bit 8-channel Analog-to-Digital Converter (ADC), two 8-bit and one 16-bit timers, two capture/compare/PWM modules, a USART, an MSSP (SPI/I2C) port, a Parallel Slave Port, and a watchdog timer with its own on-chip RC oscillator. The Harvard architecture with separate program and data buses enables single-cycle instruction execution for most opcodes, and only 35 single-word instructions are required to learn the entire instruction set. The PIC16F877 belongs to the PIC16F mid-range family, which sits hierarchically below the PIC18F (enhanced 8-bit) and above the PIC12F/PIC10F baseline families. Its successor recommended by Microchip is the PIC16F887, which retains pin compatibility while adding twice the program memory (14 KB) and a 14-bit ADC. The device supports in-circuit serial programming (ICSP) and in-circuit debugging via two I/O lines, enabling low-cost development with tools like PICkit and MPLAB ICD. The "-20" suffix denotes the 20 MHz maximum operating frequency, while "I" indicates the industrial operating temperature grade of -40C to +85C. The "/L" package code designates the leaded PLCC-44 (J-Lead) form factor with socket compatibility for legacy through-hole designs, instrumentation, and industrial control boards. The 20 MHz oscillator drives a 4-phase clock that effectively delivers 5 MIPS of throughput, sufficient for closed-loop control, sensor sampling, and serial-protocol bridging. Typical applications include industrial automation controllers, HVAC thermostats, data acquisition front-ends, motor control for small BLDC and stepper drivers, educational development boards, and consumer appliance control panels. The large 33-I/O count allows direct interface to keypads, LCD character modules, EEPROMs, and 4-20 mA sensor front-ends without external logic. When designing with this part, ensure the oscillator configuration bits (HS, XT, LP, RC) match the external resonator or crystal you intend to use. Brown-out detect (BOR) and low-voltage programming (LVP) configuration bits must be set correctly to avoid intermittent reset behavior. Place decoupling capacitors (100 nF + 10 uF bulk) within 5 mm of VDD/VSS pins. This page synthesizes distributor pricing from DigiKey, Mouser, LCSC, and Octopart, drop-in replacement candidates from Microchip's PIC16F family, and practical design notes not found in the standalone datasheet PDF.

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PIC16F877-20I/P - 8-Bit 20MHz 14KB Flash MCU | Microchip | DIP-40
PIC16F877-20I/P

PIC16F877-20I/P - 8-Bit 20MHz 14KB Flash MCU | Microchip | DIP-40

The Microchip Technology PIC16F877-20I/P is an 8-bit CMOS Flash-based microcontroller from the PIC16 family, executing instructions in 200 ns (20 MHz) and packaged in a 40-pin PDIP (DIP-40) through-hole format. The device integrates 14 KB of program Flash (8K x 14 words), 368 bytes of RAM, 256 bytes of data EEPROM, and 33 digital I/O pins shared across five ports (PORTA-PORTE). A microcontroller (MCU) is a single-chip computer containing a CPU, program memory, data memory, and integrated peripherals such as ADCs, timers, and communication interfaces. The PIC16F877 belongs to the mid-range PIC16 family, which sits within Microchip's 8-bit PIC architecture (PIC -> 8-bit MCU -> microcontroller -> semiconductor). This category targets cost-sensitive embedded designs that benefit from RISC instruction simplicity (only 35 single-word instructions) and on-chip peripherals. Key features of the PIC16F877-20I/P include a 20 MHz maximum operating frequency, 8-channel 10-bit ADC, two 8-bit timers plus one 16-bit timer, a 200 ns instruction cycle, brown-out reset (BOR), a watchdog timer, and hardware USART, MSSP (SPI/I2C) and parallel slave port. The wide operating voltage range (2.0V-5.5V), four oscillator modes (RC, LP, XT, HS), and ICD (In-Circuit Debugger) support make it flexible for both battery-powered and mains-fed designs. The architecture employs a Harvard-style RISC CPU with separate program and data buses, 14-bit wide instruction words, and a two-stage pipeline. The 25 mA source/sink per I/O pin directly drives LEDs and small relays, eliminating driver transistors in many interfaces. The integrated 10-bit ADC provides 8 input channels at conversion speeds suitable for sensor monitoring at sub-millisecond sample rates. Typical applications include industrial control panels, sensor interface nodes, motor control peripheral logic, educational development platforms, instrumentation front-ends, and legacy equipment maintenance. The through-hole PDIP-40 package is preferred for breadboarding, repair of legacy boards, and harsh-environment designs where through-hole leads improve mechanical robustness. Designers should note that Microchip recommends migrating to the PIC16F887 (1:1 pin-compatible with enhanced peripherals) or PIC18F4520 for new designs. The 40-pin PDIP footprint is shared with many PIC16/PIC18 devices, simplifying migration. Always enable the watchdog timer in noise-prone industrial environments and place a 100 nF decoupling capacitor directly between VDD and VSS pins. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes for the PIC16F877-20I/P not found in the original manufacturer datasheet, with all specifications cross-referenced to Microchip's published documentation.

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PIC16F877-20I/PQ - 8-Bit 20MHz Flash MCU | Microchip
PIC16F877-20I/PQ

PIC16F877-20I/PQ - 8-Bit 20MHz Flash MCU | Microchip

The Microchip Technology PIC16F877-20I/PQ is an 8-bit CMOS flash-based PIC microcontroller operating at 20 MHz, with 14 KB of flash program memory and 44-pin MQFP packaging. It provides 368 bytes of RAM, 256 bytes of data EEPROM, and 33 I/O pins according to the verified distributor data. The -20I/PQ ordering code identifies the 20 MHz grade and industrial-temperature option, while the PQ package code corresponds to a 10 mm by 10 mm MQFP. An 8-bit microcontroller is a compact embedded-processing component that combines a CPU core, program memory, data memory, and peripherals in one semiconductor device. The PIC16F877 belongs to the PIC16 family and uses a Harvard-style embedded architecture with single-word instructions. Microchip describes the family as capable of 200 ns instruction execution and programming with only 35 single-word instructions, making it suitable for control systems that need deterministic peripheral handling and straightforward firmware development. The verified feature set includes 14 KB of flash program memory, 368 bytes of RAM, 256 bytes of EEPROM, 33 I/O pins, and a maximum clock frequency of 20 MHz. The MCU is identified in distributor listings as supporting I2C, SPI, and UART interfaces. These serial peripherals allow connection to sensors, displays, transceivers, and other embedded modules without requiring separate interface devices. Flash memory supports in-system reprogramming workflows, while EEPROM provides nonvolatile storage for parameters and calibration data. PIC16F877-20I/PQ is packaged in a 44-pin MQFP, making it suited to moderate-size control boards and legacy industrial equipment where through-hole assembly and a larger pin count are useful. The exact MCU pin names and electrical operating limits are not fully present in the supplied excerpts; those values remain marked for verification against the manufacturer datasheet. Microchip’s product page identifies PIC16F887 as a newer device to consider, so engineers should evaluate that option for new designs rather than assuming direct software or peripheral equivalence. Typical applications include industrial automation controllers, sensor interfaces, motor and relay control, instrumentation panels, communication hubs, and embedded systems requiring I2C, SPI, or UART connectivity. The 33 I/O pins provide useful peripheral distribution for discrete inputs and outputs, while the 20 MHz operating rate supports time-sensitive control tasks. The larger MQFP footprint is less compact than modern fine-pitch packages but can simplify prototyping and serviceability. A key design consideration is migration from PIC16F877 to a newer MCU. Replacing the MCU requires checking package pinout, memory map, interrupt behavior, peripheral registers, and firmware compatibility rather than relying only on the family name. For new compact or highly connected products, compare PIC16F887 or another current family member against the required package and peripheral requirements. This product page consolidates verified distributor specifications, manufacturer availability information, package details, and engineering-oriented selection notes. It does not invent missing pin-level or electrical values; unavailable details are explicitly identified so procurement and design teams can verify them against the manufacturer datasheet before release to production.

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PIC16F877-20I/PT - 8-Bit 20MHz 14KB Flash MCU 44-TQFP | Microchip
PIC16F877-20I/PT

PIC16F877-20I/PT - 8-Bit 20MHz 14KB Flash MCU 44-TQFP | Microchip

The Microchip Technology PIC16F877-20I/PT is a peripheral-rich 8-bit CMOS FLASH-based PIC microcontroller in a 44-pin TQFP (10x10 mm) package. The device runs at 20 MHz (200 ns instruction cycle), integrates 14 KB of FLASH program memory (8K x 14 words), 368 bytes of SRAM, and 256 bytes of EEPROM data memory, with 33 digital I/O pins, an 8-channel 10-bit A/D converter, two additional timers, two capture/compare/PWM modules, and a synchronous serial port configurable as SPI or I2C. An 8-bit microcontroller (MCU) is a single-chip computer with an 8-bit data path, ALU, program counter, RAM, ROM/FLASH, and integrated peripherals. The PIC architecture is a RISC design with only 35 single-word instructions, making it beginner-friendly and deterministic for real-time control. Microcontrollers in the PIC16 family sit in the broader taxonomy: 8-bit MCU -> microcontroller -> embedded controller -> semiconductor IC, and are widely used in industrial, automotive (premium-line), consumer, and educational applications. Key features include 20 MHz operation from 2.0 V to 5.5 V, an integrated ICD (In-Circuit Debugger) interface, self-programming support, brown-out reset (BOR), power-on reset (POR), watchdog timer (WDT), and an industrial temperature grade (-40C to +85C) denoted by the "I" suffix. The "-20" speed suffix specifies 20 MHz operation versus the 4 MHz / 10 MHz variants in the same family. The PIC16F877 implements a Harvard architecture with separate program and data buses, 14-bit instruction width, and a hardware multiplier is not present, but single-cycle ALU ops deliver predictable timing. The device is upward code-compatible with PIC16C5X, PIC12CXXX, and PIC16C7X, simplifying migration from older designs. Typical applications include industrial control systems, sensor interfacing, motor control (low-power), HVAC thermostats, security panels, instrumentation, and educational/development boards. The wide 2.0-5.5 V range simplifies battery and line-powered designs alike. When designing, ensure adequate decoupling (0.1 uF + 10 uF bulk) close to VDD/AVDD/VSS pins and respect the 5.5 V absolute maximum on any pin to avoid latch-up. For new designs, Microchip recommends migrating to PIC16F887 or PIC16F877A for enhanced features and active lifecycle status. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.

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PIC16F877A-E/L - 8-bit 20MHz 14KB Flash MCU 44-PLCC | Microchip
PIC16F877A-E/L

PIC16F877A-E/L - 8-bit 20MHz 14KB Flash MCU 44-PLCC | Microchip

The Microchip Technology PIC16F877A-E/L is a peripheral-rich 8-bit CMOS Flash-based microcontroller built on Microchip's PIC16 architecture, executing instructions in 200 ns and packaged in a 44-pin PLCC (Plastic Leaded Chip Carrier) with J-leads. The device integrates 14 KB of Flash program memory (8K x 14 words), 368 bytes of SRAM, 256 bytes of EEPROM, and 33 digital I/O pins spread across five ports (PORTA-PORTE), running at up to 20 MHz from a 2.0 V to 5.5 V supply. The "E" suffix denotes the Extended operating temperature grade (-40 C to +125 C), and the "L" suffix indicates the 44-pin PLCC package. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, RAM, non-volatile program memory, peripherals, and I/O on one die. PIC16F-series MCUs belong to the enhanced mid-range family of Microchip's PIC microcontroller hierarchy: PIC10/12/14/16 (base-line and mid-range 8-bit) -> PIC16 (mid-range, enhanced mid-range) -> PICmicro 8-bit -> Microcontroller -> Semiconductor. They are designed for deterministic, low-power embedded control with a small instruction footprint (35 instructions on the PIC16F877A). Key features of the PIC16F877A include a 10-bit Analog-to-Digital Converter (ADC) with up to 8 input channels, two 8-bit timers plus one 16-bit timer, two Capture/Compare/PWM (CCP) modules, an Enhanced Universal Synchronous Asynchronous Receiver Transmitter (EUSART), a Master Synchronous Serial Port (MSSP) configurable for SPI or I2C, an ICD (In-Circuit Debug) interface, two analog comparators, brown-out reset (BOR), and a programmable watchdog timer. The Harvard architecture and 14-bit instruction word allow compact, predictable code execution. Typical applications include industrial control systems, HVAC controllers, automotive body and interior electronics, sensor signal conditioning, low-cost instrumentation, and education/development platforms where the PIC16F877A is a long-standing reference design. The wide operating voltage and rich analog/digital peripheral mix make it suitable for replacing multiple discrete components with one programmable solution. When designing with this device, ensure proper decoupling (100 nF + 10 uF bulk) near VDD pins, place the MCLR pull-up correctly for in-circuit debugging, and verify I/O assignments against the 44-pin PLCC pinout. The internal RC oscillator can be used to save cost, but a crystal is recommended for timing-sensitive UART or PWM applications.

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PIC16F877A-E/ML - 8-bit 20MHz MCU, 14KB Flash, 44-QFN | Microchip
PIC16F877A-E/ML

PIC16F877A-E/ML - 8-bit 20MHz MCU, 14KB Flash, 44-QFN | Microchip

The Microchip Technology PIC16F877A-E/ML is an 8-bit PIC RISC microcontroller with 14KB (8K x 14) of Flash program memory, 368 bytes of RAM, and 256 bytes of EEPROM, executing instructions at 20 MHz (200 ns instruction cycle). Housed in a 44-pin QFN (8x8 mm) package with exposed pad, the part integrates 33 digital I/O pins, a 10-bit 8-channel ADC, two 8-bit and one 16-bit timers, two capture/compare/PWM modules, a USART, an MSSP supporting SPI and I2C, and two analog comparators. The -E suffix denotes the extended industrial temperature grade (-40C to +125C), making the PIC16F877A-E/ML suitable for harsh-environment embedded control. An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit data path, optimized for deterministic, low-power control tasks. PIC microcontrollers sit within the broader hierarchy: 8-bit MCU -> microcontroller -> embedded processor -> semiconductor. The PIC16F877A family is widely adopted for industrial automation, instrumentation, automotive subsystems, and educational platforms due to its mature toolchain (MPLAB X IDE, XC8 compiler, PICkit programmers) and code-compatible upward migration paths to PIC16F887 and PIC18F series devices. Key features include self-programming Flash, in-circuit serial programming (ICSP), a wide 2.0V-5.5V operating voltage, on-chip brown-out reset (BOR) and power-on reset (POR), and a 10-bit ADC with up to 8 input channels. The Harvard architecture separates program and data buses, enabling simultaneous fetch and read/write cycles that deliver predictable interrupt latency. The integrated 14KB Flash is rated for 100K erase/write cycles, while the 256-byte EEPROM supports 1M write cycles. Typical applications span industrial sensor conditioning, motor control front-ends, automotive body modules, smart energy metering, and legacy 8051/PIC12-PIC16 firmware ports. The 44-QFN footprint suits space-constrained designs where the larger 40-PDIP and 44-PLCC variants are not viable. When designing with this MCU, allocate the exposed pad (EP) to a contiguous ground pour for thermal dissipation and to meet the absolute maximum ratings for package soldering. Verify oscillator stability at the chosen VDD and temperature corner before locking in MPLAB X configuration bits. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

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PIC16F877A-E/P - 8-Bit 20MHz MCU, 14KB Flash, 40-PDIP | Microchip
PIC16F877A-E/P

PIC16F877A-E/P - 8-Bit 20MHz MCU, 14KB Flash, 40-PDIP | Microchip

The Microchip PIC16F877A-E/P is an 8-bit CMOS FLASH-based microcontroller built on the PIC16 architecture, operating at up to 20 MHz with 14 KB (8K x 14) of program memory and 368 bytes of RAM, housed in a 40-pin PDIP (DIP-40) through-hole package. The "-E" suffix designates the extended temperature grade (-40C to +125C) and "/P" denotes the plastic DIP package, making this variant well-suited for industrial and ruggedized environments. A PIC16F-series 8-bit microcontroller (MCU) belongs to the broader category of microcontrollers -> embedded processors -> semiconductors. The PIC architecture uses a RISC-based Harvard design with a fixed instruction set of 35 single-word instructions, executing in 200 ns at 20 MHz. PIC MCUs are characterized by deterministic instruction timing, low power consumption, and easy in-system programming via ICSP, making them a long-standing industry workhorse for embedded control designs since the 1990s. Key features include 14 KB self-programmable FLASH program memory, 256 bytes of EEPROM data memory, 368 bytes of RAM, 33 digital I/O pins, an internal 10-bit ADC with up to 8 channels, two 8-bit and one 16-bit timers, dual analog comparators, a USART, MSSP (SPI/I2C), and an ICD (In-Circuit Debug) interface. The 20 MHz instruction execution delivers approximately 5 MIPS of throughput, sufficient for sensor interfacing, motor control loops, and Human-Machine Interface (HMI) tasks. Architecturally, the PIC16F877A implements the enhanced mid-range 14-bit instruction set core with interrupt-driven peripherals and a 14-bit program word. Its 8-level hardware stack and 2.0V-5.5V wide operating voltage allow direct battery or 5V regulated operation. The device supports power-saving INTOSC oscillator modes, BOR (Brown-Out Reset), and WDT (Watchdog Timer) for robust unattended operation. Typical applications include industrial automation controllers, automotive dashboard subsystems, HVAC controls, sensor data acquisition, educational development boards, UPS and battery management, RFID readers, and legacy PIC16 system upgrades where the drop-in PIC16F887 can replace it with doubled FLASH. Designers benefit from a mature MPLAB X IDE ecosystem with free XC8 compilers and extensive peripheral libraries. When designing with this MCU, place a 100 nF decoupling capacitor close to each VDD pin and maintain the 5V supply within 2.0V-5.5V for reliable FLASH programming. The -E extended-grade variant tolerates industrial temperature ranges but verify timing constraints against the in-system oscillator configuration you select for the application.

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PIC16F877A-E/PT - 8-Bit 20MHz 14KB Flash MCU 44-TQFP | Microchip
PIC16F877A-E/PT

PIC16F877A-E/PT - 8-Bit 20MHz 14KB Flash MCU 44-TQFP | Microchip

The Microchip Technology PIC16F877A-E/PT is an 8-bit CMOS flash-based PIC microcontroller running at up to 20 MHz instruction rate (200 ns instruction cycle), integrating 14 KB of Flash program memory, 368 bytes of RAM and 256 bytes of EEPROM, and packaged in a 44-pin TQFP (PT) 10x10 mm surface-mount package. The 20 MHz clock rate delivers 5 MIPS of computational throughput, with 14 KB (8K x 14 words) of self-programmable Flash supporting in-circuit serial programming (ICSP). What is a PIC16F877A? The PIC16F877A belongs to Microchip's PIC16 family of 8-bit microcontrollers (MCU) within the broader mid-range PICmicro architecture. As a microcontroller, it integrates CPU, program memory, data memory, EEPROM, timers, ADC, USART, I/O ports and other peripherals onto a single chip. Microcontrollers sit hierarchically under embedded processors -> processors -> semiconductors, and the PIC16F877A specifically targets mid-complexity embedded control tasks where deterministic interrupt response and low power are required. Key feature highlights of the PIC16F877A-E/PT include 33 digital I/O pins, a 10-bit 8-channel Analog-to-Digital Converter (ADC), two 8-bit timers plus one 16-bit timer, two Capture/Compare/PWM (CCP) modules, a Master Synchronous Serial Port (MSSP) supporting both SPI and I2C, a USART with RS-485 support, a Parallel Slave Port (PSP), and a Brown-Out Reset (BOR) circuit. The -E temperature grade denotes the -40C to +125C extended industrial operating range, suitable for harsh-environment applications. Architecturally, the PIC16F877A uses a 14-bit instruction word with a Harvard-style separate code and data bus, providing deterministic single-cycle instruction execution (200 ns at 20 MHz). The 35 single-word instruction RISC-like instruction set simplifies code generation and learning, which is why the PIC16F877A remains one of the most widely taught microcontrollers in universities and embedded courses. Typical applications include industrial automation control, sensor data acquisition, motor and lighting control, instrumentation, RS-232/RS-485 networked sensor nodes, hobbyist and education platforms, and mid-range consumer product controllers. The wide supply range of 2.0V to 5.5V and low-power sleep modes extend battery-operated use cases. Design consideration: when migrating to the PIC16F877A-E/PT, the 44-pin TQFP footprint must be matched on the PCB; the legacy 40-pin DIP variant uses package code -P and is not pin-compatible. Ensure your programmer/debugger supports ICSP on PGEC1/PGED1 (pins 39/40). Use MPLAB X IDE and the XC8 compiler for firmware development. This page synthesizes distributor pricing, drop-in compatible alternatives, application reference circuits and practical design notes not collected on a single manufacturer datasheet page.

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PIC16F877A-I/L - 8-bit 20MHz 14KB Flash MCU 44-PLCC | Microchip
PIC16F877A-I/L

PIC16F877A-I/L - 8-bit 20MHz 14KB Flash MCU 44-PLCC | Microchip

The Microchip Technology PIC16F877A-I/L is a CMOS FLASH-based 8-bit microcontroller from the PIC® 16F family, executing instructions in 200 nanoseconds at 20 MHz and offering 14 KB (8K x 14) of program memory in a 44-pin PLCC package (16.59 x 16.59 mm). It provides 368 bytes of RAM, 256 bytes of EEPROM data memory, and 33 general-purpose digital I/O pins, making it one of the most widely adopted mid-range 8-bit microcontrollers in industrial, educational, and legacy embedded designs. What is a PIC16F microcontroller? PIC (Peripheral Interface Controller) microcontrollers from Microchip are 8-bit RISC-based Harvard-architecture MCUs known for deterministic instruction execution, low power consumption, and a small instruction set (typically 35 instructions for the mid-range family). Within the broader taxonomy, the PIC16F877A sits in the PIC16 mid-range family (PIC10/12/16/18 family hierarchy -> 8-bit MCU -> microcontroller -> embedded IC -> semiconductor), which targets applications that need more peripherals and code space than baseline PICs but do not require the 16-bit performance of PIC24/dsPIC devices. Key features include an integrated 10-bit ADC with up to 8 channels, two 8-bit and one 16-bit timers, two Capture/Compare/PWM (CCP) modules, a USART for asynchronous serial, an MSSP module supporting both SPI and I²C, 256 bytes of EEPROM, in-circuit serial programming (ICSP), and an ICD interface for in-circuit debugging. Operating voltage spans 2.0V to 5.5V, with the industrial temperature grade (-40°C to +85°C) denoted by the 'I' suffix. Architecturally, the PIC16F877A uses a 14-bit instruction word with separate code and data buses (Harvard), allowing simultaneous instruction fetch and data access. Its 8-level hardware stack and 35-instruction RISC set deliver predictable timing that simplifies real-time control code. FLASH program memory plus self-programming support enables field firmware updates. Typical applications include industrial process control, motor drives, HVAC, security and alarm panels, instrumentation, automotive body electronics, and legacy embedded products. The 44-PLCC package is socket-friendly, simplifying prototyping and field replacement. Educational platforms and textbook designs have used this part for decades, and pin-compatible successors such as PIC16F887 and PIC18F4520 are common upgrades. When designing with the PIC16F877A-I/L, ensure decoupling: place 100 nF and 10 µF capacitors near VDD, tie all unused inputs to VDD or ground through 10 kΩ resistors, and respect the maximum 20 MHz clock and 200 ns instruction cycle. The MPLAB X IDE and XC8 compiler provide the standard firmware toolchain. This page synthesizes distributor pricing, drop-in PIC family alternatives, and practical design notes not found in the manufacturer datasheet alone.

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PIC16F877A-I/LG - 8-Bit MCU, 14KB Flash, 44-PLCC | Microchip
PIC16F877A-I/LG

PIC16F877A-I/LG - 8-Bit MCU, 14KB Flash, 44-PLCC | Microchip

The Microchip PIC16F877A-I/LG is a CMOS FLASH-based 8-bit microcontroller from the PIC16 family, featuring 14KB (8K x 14) of program memory, 368 bytes of SRAM, and 256 bytes of EEPROM data memory, housed in a 44-pin PLCC (J-Lead) package. It executes instructions in a 200 ns cycle at 20 MHz and is built on a RISC architecture with 35 single-word instructions, making it easy to program in C or assembly. The device offers 33 digital I/O pins, three timer modules, a 10-bit ADC with 8 channels, two capture/compare/PWM modules, and hardware USART, SPI, and I2C peripherals. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, memory (Flash, RAM, EEPROM), and peripherals around an 8-bit data path. Within the embedded hierarchy, MCUs sit beneath microprocessors, distinguished by on-chip program memory and peripherals that make them self-contained for control tasks. The PIC16 family occupies Microchip's mid-range 8-bit portfolio, balancing cost, peripheral integration, and code density for industrial, consumer, and educational designs. The PIC16F877A architecture combines a Harvard bus with separate program and data memories, enabling single-cycle instruction fetch and decode. Its 14-bit instruction word delivers compact code, and the 8-level hardware stack supports nested subroutines without software overhead. The nanoWatt technology feature set offers multiple power-managed idle and sleep modes, reducing quiescent current for battery-backed designs, while the wide 2.0 V to 5.5 V operating range supports both 3.3 V and 5 V rails. Typical applications include industrial automation controllers, sensor interface boards, motor control peripherals, USB-to-UART bridges (via external UART), HVAC control panels, and educational development platforms. The PIC16F877A's combination of ADC, PWM, and serial peripherals lets a single chip replace multiple discrete components, shrinking BOM cost while retaining deterministic interrupt response. A practical design tip: configure the configuration bits (fuses) for the intended oscillator mode (HS, XT, or RC) before programming, and reserve MCLR as a reset input with the recommended 10 kohm pull-up. This page synthesizes distributor pricing, drop-in alternatives, and engineering notes not found in the manufacturer datasheet alone.

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PIC16F877A-I/ML - 8-Bit 20MHz 14KB Flash MCU | Microchip
PIC16F877A-I/ML

PIC16F877A-I/ML - 8-Bit 20MHz 14KB Flash MCU | Microchip

The Microchip Technology PIC16F877A-I/ML is an 8-bit CMOS flash microcontroller with a 20 MHz maximum clock, 14 KB of program Flash memory, 368 bytes of RAM, 33 I/O pins, and a 44-pin QFN package measuring 8 mm by 8 mm. According to the Microchip PIC16F877A product page, the device executes instructions in as little as 200 nanoseconds and uses a compact instruction set containing 35 single-word instructions. It belongs to the PIC16 family of 8-bit microcontrollers, combining embedded control, programmable I/O, and serial peripherals on one semiconductor device. A microcontroller is a complete embedded-control component that integrates a processor core, nonvolatile program memory, data memory, I/O ports, timers, and communication interfaces. Within the hierarchy of semiconductor and embedded systems, a PIC16 microcontroller sits below the broader category of microcontrollers and above application-specific control controllers. The PIC16F877A combines this integration with an established PIC instruction set and software development ecosystem. Verified distributor information identifies 14 KB of flash program memory organized as 8K by 14 words, 368 bytes of data RAM, 33 I/O pins, and operation up to 20 MHz. The manufacturer snippet also confirms 200 ns instruction execution and only 35 single-word instructions. Other device capabilities—including RAM organization beyond the stated 368 bytes, EEPROM capacity, I/O electrical limits, ADC resolution, USART availability, timer resources, and operating-temperature limits—were not included in the supplied verified data and therefore are not asserted here. The -I grade suffix denotes the manufacturer's industrial temperature option, but the exact numerical temperature limits are not present in the provided search records. The /ML suffix identifies the 44-pin QFN package and its supported manufacturing configuration. This package differs from the PIC16F877A-I/P 40-pin through-hole variant, so the package suffix and land pattern must be checked before substitution rather than relying only on the base device name. Typical engineering uses include embedded control, instrumentation, educational MCU platforms, and legacy industrial equipment where a compact 8-bit controller and sufficient I/O capacity are required. The device's 20 MHz maximum clock and 33 I/O pins provide useful control bandwidth for digital state machines, timing functions, and peripheral integration. Firmware performance still depends on instruction count, interrupt structure, memory access, and the selected clock configuration. When laying out a board, preserve the exposed-pad and land-pattern requirements of the 44-pin QFN, confirm every power and ground connection, and route sensitive interfaces away from noisy switching nodes. Firmware migration also requires validation of configuration words, peripheral registers, interrupt behavior, and application timing rather than assuming binary or peripheral compatibility from a similar PIC16 device. This page consolidates the verified manufacturer capability statement, distributor package and memory data, lifecycle information, sourcing links, and replacement analysis. It separates confirmed values from missing technical data so engineers can compare the part without relying on unverified parameter guesses.

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PIC16F877A-I/P - 8-Bit 20MHz 14KB Flash MCU | Microchip
PIC16F877A-I/P

PIC16F877A-I/P - 8-Bit 20MHz 14KB Flash MCU | Microchip

The Microchip Technology PIC16F877A-I/P is an 8-bit CMOS Flash PIC microcontroller rated for 20 MHz operation, with 14 KB of program Flash, 368 bytes of RAM, and 33 I/O pins in a 40-pin plastic DIP package. According to the verified distributor listings, the device provides a 200 ns instruction execution time and a compact 35-instruction architecture, making it suitable for embedded control, measurement, and legacy industrial systems. A microcontroller is a programmable integrated circuit that combines a CPU core, nonvolatile program memory, data memory, input/output ports, and peripherals on one package. The PIC16F877A-I/P belongs to the PIC16 family, where Flash program memory allows firmware to be reprogrammed without removing the device. Its DIP-40 package also supports breadboards, prototyping boards, through-hole assembly, and repair workflows where a socketed component is useful. The verified source data identifies 14 KB of Flash, 368 bytes of RAM, 33 I/O pins, 8-bit processing, and a 20 MHz maximum clock indication. The product family also supports communication and control peripherals described in the manufacturer material, including timer/counter resources, capture/compare/PWM functions, serial interfaces, and an analog-to-digital converter. Exact voltage range, ADC resolution, timer quantities, and electrical timing values are not present in the supplied verified extract and must be checked in the manufacturer datasheet before production release. PIC16F877A-I/P is commonly selected for cost-sensitive embedded controllers, data-acquisition systems, instrumentation, educational platforms, and legacy industrial equipment. The 40-pin DIP footprint simplifies prototype replacement, while the 33-pin I/O budget supports multiple digital inputs and outputs around a control core. Firmware development should account for the PIC16 instruction set and verify timing at the selected oscillator or external-clock configuration. The main design consideration is package and lifecycle validation. The part is presented by distributors as purchasable, but current stock, price, and lifecycle status should be checked at procurement. A replacement must be reviewed for pinout, memory, clock, supply voltage, peripheral mapping, programming-tool support, and firmware compatibility rather than selected by MPN similarity alone. The verified LCSC snippet shows an in-stock listing and a price from $2.9394, while exact tiered pricing is not supplied. This product record combines the verified manufacturer and distributor facts with explicitly marked data gaps. It also separates confirmed same-package alternatives from broader functional replacements, so engineers can make a grounded drop-in decision instead of assuming that a different MCU with similar advertised features is electrically interchangeable.

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PIC16F877A-I/PT - 8-Bit 20MHz MCU, 14KB Flash, 44-TQFP | Microchip
PIC16F877A-I/PT

PIC16F877A-I/PT - 8-Bit 20MHz MCU, 14KB Flash, 44-TQFP | Microchip

The Microchip Technology PIC16F877A-I/PT is an 8-bit CMOS flash-based microcontroller in a 44-pin TQFP (10x10 mm) package, delivering 20 MHz CPU performance with 200 ns instruction execution. The 'A' revision is the improved successor to the legacy PIC16F877, integrating 14 KB of program Flash, 368 bytes of SRAM, and 256 bytes of EEPROM data memory. It is part of Microchip's PIC® mid-range family and is pin-compatible with the original PIC16F877 in any of its three package options (DIP-40, PLCC-44, TQFP-44). What is a PIC16F877A microcontroller? The PIC16F877A belongs to the PIC® mid-range 8-bit microcontroller family, sitting in the taxonomy: PIC16F877A -> PIC16F family -> PIC® mid-range -> 8-bit microcontroller -> microcontroller -> embedded controller -> semiconductor IC. Microcontrollers of this class combine a CPU core, non-volatile program Flash, volatile SRAM, on-chip peripherals (timers, ADC, USART, CCP, I/O ports), and a brown-out reset circuit on a single die. They are programmed via Microchip's ICSP (In-Circuit Serial Programming) interface using tools such as PICkit, ICD, or MPLAB Xpress, with code development performed in MPLAB X IDE using XC8 compilers. Key features of the PIC16F877A-I/PT include: 33 digital I/O pins, a 10-bit ADC with up to 8 channels, two 8-bit timers plus one 16-bit timer, two capture/compare/PWM (CCP) modules, a USART for asynchronous/synchronous serial communication, an SSP module supporting SPI and I2C (master/slave), a parallel slave port, on-chip 256-byte EEPROM, and brown-out reset plus power-on reset. The wide operating voltage range of 2.0 V to 5.5 V supports both 3.3 V and 5 V system designs. Architecturally, the PIC16F877A uses a RISC Harvard architecture with separate program and data buses, allowing simultaneous instruction fetch and operand access. The 14-bit instruction word provides 35 single-word instructions, and the device includes a hardware multiplier that accelerates arithmetic. The 'A' revision silicons correct early-life bugs of the original PIC16F877 (such as the oscillator start-up timer behavior and the EEPROM endurance issue) and is the variant currently in production. The 'I' suffix denotes the industrial temperature grade (-40°C to +85°C). Typical applications include industrial automation control boards, motor control driver boards, sensor interface modules, instrumentation and data loggers, educational development platforms and embedded learning kits, consumer appliance controllers, and the design of legacy upgrades to PIC16F877-based systems where software can be recompiled unchanged for the 'A' revision. The 33 I/O pins and rich peripherals also suit hobbyist projects such as robotics controllers and home-brew SCADA nodes. When designing with this part, ensure decoupling capacitance of 100 nF plus 10 µF bulk is placed within 10 mm of the VDD pins, leave the MCLR pin pulled high through a 10 kΩ resistor, and respect the minimum capacitance load on the oscillator pins if running from a crystal. In-circuit serial programming requires the ICSPDAT and ICSPCLK pins to be accessible and not driven by external buffers during programming. This page synthesizes Microchip datasheet parameters, DigiKey and Mouser distributor pricing tiers, and drop-in-compatible PIC alternatives not consolidated on a single distributor page.

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