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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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PIC16F877AT-I/L - 8-Bit 20MHz MCU, 14KB Flash | Microchip
PIC16F877AT-I/L

PIC16F877AT-I/L - 8-Bit 20MHz MCU, 14KB Flash | Microchip

The Microchip Technology PIC16F877AT-I/L is an 8-bit PIC microcontroller with a 20 MHz operating frequency, 14 KB of Flash program memory, 33 I/O, and a 44-pin PLCC package measuring 16.59 mm by 16.59 mm. It is designed for embedded control applications requiring programmable digital I/O, serial communication, timers, and analog measurement. A microcontroller is a compact computer-in-a-chip that executes firmware to monitor inputs and control outputs. The PIC16F877A belongs to the PIC16F family, combining a RISC-based architecture, Flash memory, RAM, peripherals, and I/O in one integrated device. Its 8-bit architecture and 20 MHz maximum frequency make it suitable for industrial automation, consumer electronics, instrumentation, and control systems. Key features include an 8-channel, 10-bit ADC, 14 KB of Flash memory, and 33 I/O. The supplied distributor data identifies the device as an 8-bit MCU with 14 KB Flash, 368 bytes of RAM, 33 I/O, and a 20 MHz maximum operating frequency. The “AT” portion of the MPN identifies the specified device variant, while “/L” identifies the leaded package option. The PIC16F877AT-I/L combines a conventional 8-bit control core with on-chip peripherals that reduce external component count. Its Flash-based program memory supports in-system programming and field firmware updates when the system design provides the required programming interface. The 10-bit ADC enables analog sensor acquisition, while the 33 I/O pins provide digital control and communication connections. Typical applications include industrial automation and machine control, consumer appliances, electronic instrumentation, and automotive systems. In an industrial controller, the MCU can read sensors, execute control logic, drive indicators, and coordinate communication interfaces. In an automotive system, the extended temperature specification supports operation from -40°C to +85°C, subject to the complete system requirements. Designers should preserve the 44-pin PLCC footprint and verify all pin assignments, power, oscillator, programming, and peripheral connections against the manufacturer datasheet. The PLCC package is not a leadless chip carrier; its gull-wing leads are soldered around the package body. Adequate decoupling and correct oscillator layout are essential for reliable embedded operation. This page combines verified distributor information, manufacturer-related references, structured comparisons, and practical design guidance for engineers evaluating the PIC16F877AT-I/L.

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PIC16F877AT-I/ML - 20MHz 8-Bit MCU 14KB Flash | Microchip
PIC16F877AT-I/ML

PIC16F877AT-I/ML - 20MHz 8-Bit MCU 14KB Flash | Microchip

Microchip Technology PIC16F877AT-I/ML is an 8-bit PIC16 microcontroller with a 20 MHz maximum operating frequency, 14 KB of flash program memory organized as 8K × 14 words, 368 bytes of RAM, and 33 I/O pins. The device is supplied in a 44-QFN surface-mount package measuring 8 mm × 8 mm, with the -I industrial-temperature and -T enhanced-flash identifiers incorporated in the orderable MPN. An 8-bit microcontroller is a programmable semiconductor containing a processor core, nonvolatile program memory, data memory, and peripherals on one integrated circuit. Within the product hierarchy, the PIC16F877A belongs to the PIC16 family of 8-bit RISC microcontrollers, which are designed for embedded control tasks involving digital inputs, outputs, timers, communications, and analog signal conditioning. The -AT variant combines the enhanced-flash PIC16F877A architecture with an industrial-temperature ordering option. The verified device data identifies a 20 MHz operating speed, 14 KB (8K × 14) flash memory, 368 bytes of RAM, and 33 I/O pins. These resources make the MCU suitable for products that need substantial control logic, persistent firmware, and multiple peripheral connections without relying on a higher-cost system-on-chip design. The 44-QFN package also supports compact, surface-mount PCB assemblies, although its exposed thermal and layout requirements must be followed exactly. The PIC16F877A device family supports established embedded-control workflows such as timer-based sequencing, digital I/O control, serial communications, and analog measurement using its integrated peripherals. Its 8-bit architecture simplifies instruction handling and is well established in industrial control, instrumentation, appliance control, and legacy peripheral equipment. Firmware portability should still be evaluated rather than assumed because software architecture, interrupt behavior, and peripheral details can vary between related PIC16 families. Typical uses include compact industrial controllers, sensor-conditioning equipment, power and motor-control subsystems, communications modules, and embedded products that retain an installed PIC16F877A software base. The 33 I/O pins provide useful interface capacity for buttons, indicators, relays, sensors, displays, and external converters. Designers should budget several I/O pins for programming, reset, and supervisory functions before finalizing an application layout. A primary design consideration is package verification. The target uses a 44-QFN footprint with an 8 mm × 8 mm body, so PCB land patterns, exposed-pad connection, paste volume, solder profile, and assembly clearance must match the manufacturer drawing. Software tools, oscillator settings, peripheral configuration, and application-specific timing should also be checked against the manufacturer documentation before production release. This product page consolidates verified distributor specifications, lifecycle information, same-footprint replacement candidates, package considerations, and application guidance. It also distinguishes documented compatibility evidence from parameters that still require confirmation, helping engineers make sourcing and design decisions without treating related part numbers as automatic drop-in replacements.

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PIC16F877AT-I/PT - 8-bit 20MHz MCU 14KB Flash 44-TQFP | Microchip
PIC16F877AT-I/PT

PIC16F877AT-I/PT - 8-bit 20MHz MCU 14KB Flash 44-TQFP | Microchip

The Microchip Technology PIC16F877AT-I/PT is an 8-bit RISC Flash microcontroller from the PIC16F87xA family, operating at up to 20 MHz with 14KB (8K x 14 words) of on-chip Flash program memory and 368 bytes of RAM, housed in a 44-pin TQFP (PT) surface-mount package. The 'T' suffix indicates Tape & Reel packaging and the 'I' indicates the industrial temperature grade (-40C to +85C). The device integrates 256 bytes of EEPROM data memory, 33 digital I/O pins, three timers (Timer0, Timer1, Timer2), two Capture/Compare/PWM (CCP) modules, an enhanced USART, MSSP (SPI/I2C), a 10-bit ADC with up to 8 channels, and two analog comparators. A 14-instruction word Harvard architecture delivers ~5 MIPS at 20 MHz, and 35 single-word instructions provide deterministic execution suitable for real-time control loops. An 8-bit microcontroller (MCU) is a small computer-on-a-chip that integrates a CPU, non-volatile program memory, working RAM, peripherals and I/O into a single IC. PIC16-family devices occupy the mid-range tier of Microchip's 8-bit portfolio, bridging entry-level PIC10/12/14 parts and the higher-pin-count PIC18 family, and are widely used in legacy industrial, educational and embedded designs. Key features include wide operating voltage (2.0 V to 5.5 V), low-power operation with nanoWatt technology, ICD (In-Circuit Debugger) support via two debug pins, and self-programmable Flash memory. Brown-out Reset (BOR), Power-on Reset (POR), watchdog timer with on-chip RC oscillator, and code protection are standard. The ADC offers 10-bit resolution with successive approximation and is well-suited for sensor interfacing; PWM resolution of up to 10 bits supports motor and lighting control. Typical applications include industrial automation controllers, HVAC sensor nodes, motor driver signal conditioning, instrumentation front-ends, smart-card readers, security and access-control panels, and legacy equipment retrofits. Its 33 I/O and rich peripheral set make it ideal when an entire subsystem (display, keypad, sensors, actuators, communication) must be served from a single chip. Designers should reserve a 100 nF decoupling capacitor close to VDD and a 10 uF bulk capacitor on the board input rail.

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PIC16F877AT-I/PTG - 8-bit 20MHz MCU 14KB Flash TQFP-44 | Microchip
PIC16F877AT-I/PTG

PIC16F877AT-I/PTG - 8-bit 20MHz MCU 14KB Flash TQFP-44 | Microchip

The Microchip Technology PIC16F877AT-I/PTG is an 8-bit PIC16 family microcontroller built on a RISC core, delivering 20 MHz CPU performance with 14 KB (8K x 14) of Flash program memory in a 44-pin TQFP (PT) package supplied on tape-and-reel (suffix "G"). It integrates 368 bytes of RAM, 256 bytes of EEPROM, and 33 digital I/O pins, providing generous connectivity for embedded control applications. A microcontroller (MCU) is a single-chip computer containing a CPU, program memory (Flash/ROM), working memory (RAM), non-volatile data storage (EEPROM), and peripherals such as timers, ADC, communication ports, and I/O. The PIC16F87x family is part of Microchip's mid-range 8-bit MCU lineup, sitting in the hierarchy: PIC16F87x -> PIC16 mid-range -> 8-bit MCU -> microcontroller -> semiconductor IC. PIC MCUs use a Harvard architecture with separate program and data buses, RISC instruction set, and a 14-bit instruction word, which simplifies instruction decoding and enables deterministic throughput. Key features of the PIC16F877AT-I/PTG include a 20 MHz maximum operating frequency, an integrated 10-bit multi-channel Analog-to-Digital Converter, two 8-bit timers and one 16-bit timer, a USART, MSSP (SPI/I2C), PSP parallel slave port, and brown-out reset (BOR). The wide operating voltage range of 2.0V to 5.5V (industrial -40C to +85C) supports both 3.3V and 5V designs. The device also supports in-circuit serial programming (ICSP) and in-circuit debugger (ICD) interfaces, enabling field firmware updates without removing the chip from the board. Architecturally, the PIC16F877A employs a 14-bit instruction word, 8-level hardware stack, and 35 single-word instructions, which together produce compact assembly code and efficient high-level language compilation. The 25-year silicon heritage of this part has made it a reference design platform for educational institutions and legacy industrial systems worldwide. Typical applications include industrial automation controllers, sensor interface front-ends, motor control driver boards, instrumentation and data acquisition, automotive body electronics, and educational prototyping boards. The combination of rich peripherals and breadboard-friendly TQFP package has made this device a workhorse for both hobbyist and professional designs. When designing with this part, ensure decoupling capacitors (0.1 uF and 10 uF) are placed within 5 mm of the VDD pins. Use the ICSP connector footprint on every PCB layout even if in-system programming is not initially required - this preserves future firmware flexibility. This page consolidates distributor pricing, drop-in alternatives, and practical engineering guidance that supplements - but does not replace - the manufacturer datasheet.

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PIC16F877T-04/L - 8-Bit 4MHz PIC MCU 14KB Flash 44-PLCC | Microchip
PIC16F877T-04/L

PIC16F877T-04/L - 8-Bit 4MHz PIC MCU 14KB Flash 44-PLCC | Microchip

The Microchip Technology PIC16F877T-04/L is an 8-bit CMOS Flash-based PIC16 microcontroller delivering 4 MIPS throughput at 4 MHz and packing 14 KB (8K x 14) of on-chip program memory, 368 bytes of RAM, and 256 bytes of EEPROM into a 44-pin PLCC (Plastic Leaded Chip Carrier, 16.59 x 16.59 mm) J-leaded package. The /L suffix denotes the commercial temperature range of 0C to +70C, while the T suffix indicates Tape & Reel packaging, and the -04 speed suffix specifies a 4 MHz maximum oscillator frequency. What is a PIC16F8xx microcontroller? The PIC16F877 belongs to Microchip's mid-range PIC16 family, an 8-bit RISC architecture positioned in the broader taxonomy as: 8-bit microcontroller -> PIC microcontroller -> microcontroller unit (MCU) -> embedded controller -> semiconductor. PIC16F8xx devices execute one instruction per 200 ns cycle (4 MHz external oscillator, 1 MHz instruction clock), providing a deterministic Harvard-architecture engine that is widely used for industrial control, instrumentation, and legacy embedded designs. Key features include 33 digital I/O pins, a 10-bit Analog-to-Digital Converter (ADC) with up to 8 channels, a USART, MSSP (SPI/I2C), capture/compare/PWM modules, two 8-bit timers plus one 16-bit timer, and in-circuit serial programming (ICSP). The device operates from 2.0 V to 5.5 V and supports 35 single-word instructions with 14-bit instruction word width. Architecturally, the PIC16F877 uses a RISC core with 14-bit instructions, an integrated 10-bit ADC, and Flash program memory that enables in-system reprogramming. Compared to its predecessor PIC16C77, the Flash-based PIC16F877 offers faster development cycles and field-upgradeable firmware. Microchip recommends migrating to the pin-compatible PIC16F887 for new designs. Typical applications include industrial automation controllers, HVAC control boards, sensor signal conditioning, motor driver front-ends, low-end embedded displays, and legacy test & measurement instrumentation. The wide peripheral set makes it suitable for any 8-bit application that requires ADC, serial communication, and PWM in a single device. When designing with the PIC16F877T-04/L, ensure decoupling capacitors are placed close to VDD/VSS pairs and that the MCLR reset pin has the proper 10 kohm pull-up with a diode clamp. For new designs, prefer the pin-compatible PIC16F887 which offers enhanced peripherals and longer lifecycle support. This page synthesizes distributor pricing, drop-in alternatives, and design notes beyond the manufacturer datasheet summary, helping engineers evaluate lifecycle status and replacement strategy.

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PIC16F877T-04/PQ - 8-bit PIC MCU, 14KB Flash, 4MHz, 44-MQFP | Microchip
PIC16F877T-04/PQ

PIC16F877T-04/PQ - 8-bit PIC MCU, 14KB Flash, 4MHz, 44-MQFP | Microchip

The Microchip Technology PIC16F877T-04/PQ is an 8-bit PIC® RISC Flash microcontroller IC delivering 4MHz CPU performance with 14KB (8K x 14 words) of on-chip program Flash memory, packaged in a 44-pin Metric Quad Flat Pack (MQFP, 10x10 mm) supplied on Tape & Reel. This CMOS FLASH-based mid-range MCU executes instructions in 200 ns and supports 35 single-word instructions. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, RAM, Flash program memory, EEPROM data memory, and a rich set of peripherals onto one IC. The PIC16F877 sits within the broader taxonomy of microcontroller -> embedded controller -> semiconductor device, and its RISC architecture makes it suitable for real-time control applications where deterministic instruction timing simplifies firmware design. Key features of the PIC16F877T-04/PQ include 368 bytes of RAM, 256 bytes of EEPROM data memory, 33 digital I/O pins, three timers, a 10-bit Analog-to-Digital Converter with up to 8 channels, a USART, MSSP (SPI/I2C), and a Parallel Slave Port. The “-04” suffix indicates the 4 MHz maximum operating frequency grade, and the “T” suffix denotes Tape & Reel packaging for high-volume SMT assembly. The device integrates a Harvard-architecture RISC core, 14-bit instruction word, and brown-out-reset / power-on-reset / watchdog timer for robust embedded operation. The wide operating voltage range (2.0 V to 5.5 V) and four oscillator modes (RC, HS, XT, LP) allow trade-offs between speed, power, and external component cost. The 10-bit ADC makes it well suited to sensor-interface designs where mixed-signal integration reduces BOM. Typical applications include industrial control panels, HVAC sensor nodes, motor-control daughter boards, instrumentation front-ends, automotive body modules, and educational/development platforms where the PIC16 architecture is widely taught and supported by MPLAB X IDE and the XC8 compiler toolchain. When designing with the PIC16F877T-04/PQ, observe the 44-MQFP land pattern and reflow profile (JEDEC J-STD-020). The MCU’s wide 2.0–5.5 V supply range allows direct operation from a 3.3 V or 5 V rail, but the ADC absolute accuracy is improved with a clean analog supply and proper PCB partitioning. This page synthesizes distributor pricing, drop-in pin-compatible alternatives from the PIC16F family, and practical design notes not consolidated on the manufacturer datasheet.

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PIC16F877T-04/PT - 4MHz 8-Bit 14KB Flash MCU | Microchip
PIC16F877T-04/PT

PIC16F877T-04/PT - 4MHz 8-Bit 14KB Flash MCU | Microchip

The Microchip Technology PIC16F877T-04/PT is a 4 MHz, 8-bit CMOS Flash microcontroller with 14 KB of program memory, 368 bytes of RAM, 33 I/O pins, and a 44-pin TQFP package measuring 10 x 10 mm. It executes instructions in as little as 200 ns and uses a compact instruction set containing 35 single-word instructions. The -04 suffix identifies the 4 MHz speed grade, while /PT identifies the surface-mount 44-pin TQFP package and tape-and-reel ordering format. A microcontroller is a programmable semiconductor that integrates a CPU core, memory, input/output ports, and peripherals on one device. Within the product hierarchy, this PIC16F877 belongs to Microchip's PIC16 family of 8-bit RISC microcontrollers. Such devices are used to read sensors, control actuators, manage communications, and implement embedded control logic without requiring a separate processor, memory, and external interface circuitry. Key features include 14 KB of Flash program memory organized as 8K x 14 words, 368 bytes of data RAM, 33 I/O pins, and a maximum listed clock frequency of 4 MHz. The Flash architecture supports in-circuit programming and repeated firmware updates, making the device suitable for products whose control software must be revised during production or field service. The compact 44-TQFP package also reduces board area compared with larger through-hole and PLCC options. The PIC16F877 is designed around Microchip's PIC architecture with a 35-instruction set and a 200 ns instruction-execution capability. Its combination of Flash memory, parallel I/O, and legacy-compatible peripherals makes it suitable for industrial controllers, instrumentation, data acquisition, and legacy product revisions. According to the manufacturer product page, the PIC16F877 is part of a broader family that is upward compatible with earlier PIC16C5X, PIC12CXXX, and PIC16C7X devices, simplifying migration for supported designs. Typical uses include motor and relay control, temperature and process monitoring, programmable logic controllers, laboratory instruments, communication controllers, and embedded industrial equipment. Designers can retain the 10 x 10 mm TQFP footprint while upgrading an older PIC16F877 design to a newer compatible device after checking every peripheral, pin function, electrical limit, and firmware dependency. A critical design consideration is oscillator selection. This -04 device is rated for 4 MHz, so a faster external crystal or clock must not be used without confirming timing requirements against the manufacturer documentation. Decoupling, programming-interface access, unused-pin handling, brownout behavior, and peripheral pin multiplexing should also be validated against the schematic and current datasheet before production release. This page consolidates verified distributor specifications, package information, sourcing links, compatible alternatives, and practical engineering guidance. It also distinguishes directly evidenced parameters from unspecified electrical details so engineers can identify what still requires confirmation against the authoritative Microchip documentation.

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PIC16F877T-04E/L - 4MHz 8-Bit FLASH MCU, 14KB, 44-PLCC | Microchip
PIC16F877T-04E/L

PIC16F877T-04E/L - 4MHz 8-Bit FLASH MCU, 14KB, 44-PLCC | Microchip

The Microchip Technology PIC16F877T-04E/L is a CMOS FLASH-based 8-bit PIC microcontroller delivering 4 MIPS performance from a 4 MHz oscillator in a 44-pin PLCC (J-lead) package qualified to the automotive -40C to +125C temperature grade. It integrates 14 KB of FLASH program memory (8K x 14 words), 368 bytes of data SRAM, and 256 bytes of data EEPROM, with 33 general-purpose digital I/O lines multiplexed across five ports (RA-RE). A microcontroller (MCU) is a single-chip computer that combines a CPU core, program and data memory, peripherals, and I/O on one die. The PIC16F877 belongs to Microchip's mid-range PIC16 family, sitting in the hierarchy: PIC16F family -> PIC16 mid-range 8-bit MCU -> PIC microcontroller -> RISC microcontroller -> embedded computing platform. Mid-range PIC16F parts balance code density (14-bit instruction word, 35 single-word instructions) with rich peripherals for cost-sensitive embedded control. Key features include 200 ns instruction execution, 8-channel 10-bit ADC, two capture/compare/PWM modules, one USART with RS-485 support, one MSSP capable of SPI and I2C (master/slave), a parallel slave port, and two 8-bit plus one 16-bit timer. The wide operating voltage range of 2.0 V to 5.5 V and self-programming FLASH make it suitable for both battery-powered and industrial line-powered designs. Architecturally, the PIC16F877 uses a Harvard RISC core with separate program and data buses, allowing instruction fetch and data access in the same cycle. The on-chip ICD/debug support and 14-bit wide instruction word give a 2:1 code density advantage over many CISC 8-bit contemporaries, which reduces FLASH footprint for equivalent functionality and contributes to the part's longevity in legacy designs. Typical applications include industrial automation controllers, automotive body and HVAC modules, sensor signal conditioning front-ends, RS-485 networked sensor nodes, and consumer appliance user-interface boards. For new designs, Microchip recommends migrating to the pin-compatible PIC16F887, which adds an internal oscillator and enhanced ADC at the same 44-pin PLCC footprint. Design consideration: PLCC packages require a through-hole socket or careful surface-mount reflow profile; an ICSP/ICD connector footprint must be reserved for in-circuit debug, and the MCLR reset pin needs the datasheet-specified RC network to avoid spurious resets. This page synthesizes distributor pricing, drop-in PLCC alternatives, and practical design notes beyond the manufacturer datasheet, giving procurement and engineering teams a single source for selection.

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