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PIC16F876-20/SO - 8-bit 20MHz PIC MCU, 14KB Flash, 28-SOIC | Microchip
PIC16F876-20/SO

PIC16F876-20/SO - 8-bit 20MHz PIC MCU, 14KB Flash, 28-SOIC | Microchip

The Microchip Technology PIC16F876-20/SO is an 8-bit CMOS Flash-based RISC microcontroller running at 20 MHz with 14 KB (8K x 14 words) of on-chip program memory, housed in a 28-pin SOIC (Small Outline IC) package. As part of Microchip's widely adopted PIC® mid-range family, it executes most instructions in a single 200 ns cycle and offers 35 single-word instructions, 22 digital I/O lines, a 10-bit multi-channel A/D converter, USART, MSSP (SPI/I2C), two capture/compare/PWM modules, and 256 bytes of data EEPROM. A microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory, working RAM, and programmable peripherals. The 8-bit class represents the most widely deployed MCU tier, trading raw arithmetic width for deterministic timing, ultra-low cost per I/O, and decades of proven toolchain maturity. The PIC® mid-range architecture sits inside a broader taxonomy of microcontrollers -> 8-bit MCUs -> CMOS RISC MCUs -> flash-memory MCUs, and it remains one of the most deployed architectures in industrial, appliance, automotive aftermarket, and educational designs. Key features of the PIC16F876-20/SO include 368 bytes of SRAM, an internal watchdog timer with its own on-chip RC oscillator, a programmable code-protection mechanism, an ICD (In-Circuit Debugger) interface, and a wide operating voltage range suitable for both 3.3 V and 5 V systems. The device supports in-circuit serial programming (ICSP), allowing firmware updates via just two pins without removing the part from the board. Technically, the PIC16F876-20/SO uses a Harvard architecture with separate program and data buses, which lets a fetch and a read occur in parallel with execution. Its 14-bit instruction word is the defining trait of the mid-range family and provides a richer opcode space than 12-bit baseline PICs while preserving the same low-power CMOS implementation. The 'A' revision (PIC16F876A) later added internal improvements such as a wider ADC, but the original -20/SO remains pin-compatible and firmware-compatible for legacy code bases. Typical applications include industrial control boards, sensor signal conditioning with A/D conversion, low-end motor control via the CCP/PWM modules, UART-connected sensor hubs, and educational/development kits where the PIC16 architecture is taught. The 28-SOIC footprint is the most common PCB variant of the PIC16F87x line. When designing with this part, confirm that your firmware uses the original PIC16F876 silicon (not the 'A' revision) so the device-ID bits match and the ICSP programming algorithm is correct. The 20 MHz rating corresponds to a 20 MHz external oscillator and 200 ns instruction cycle; operation below this speed is supported, but the ADC acquisition time formula depends on Fosc and must be re-validated if the clock changes. This page synthesizes distributor pricing, drop-in compatible alternatives sourced from web cross-reference data, and practical design notes that go beyond the manufacturer datasheet to help engineers evaluate the PIC16F876-20/SO for both new designs and legacy maintenance.

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PIC16F876-20/SP - 8-Bit 20MHz 14KB Flash MCU | Microchip
PIC16F876-20/SP

PIC16F876-20/SP - 8-Bit 20MHz 14KB Flash MCU | Microchip

The Microchip Technology PIC16F876-20/SP is an 8-bit CMOS FLASH-based microcontroller from the PIC16F family, delivering 20MHz instruction execution (200ns per instruction) in a 28-pin SPDIP package. It integrates 14KB of program Flash memory, 368 bytes of RAM, 256 bytes of EEPROM data memory, 22 general-purpose I/O pins, and a rich peripheral set including five 10-bit ADC channels, two capture/compare/PWM modules, an enhanced USART, and a synchronous serial port configurable as SPI or I²C master/slave. A microcontroller (MCU) is a single-chip computer containing a processor core, program and data memory, timers, and I/O peripherals. The PIC16F876 sits in Microchip's mid-range PIC16 family, sitting in the taxonomy: 8-bit MCU -> PIC16F mid-range -> FLASH MCU -> embedded controller -> semiconductor. Its RISC architecture uses only 35 single-word instructions and is upward compatible with the PIC16C5X, PIC12CXXX, and PIC16C7X families, enabling easy code migration across the entire mid-range line. Key features include self-programmability (in-circuit serial programming, ICSP), in-circuit debugging (ICD), two 8-bit timers plus one 16-bit timer, a watchdog timer with its own on-chip RC oscillator, brown-out reset, and a wide 2.0V to 5.5V operating voltage range. The CMOS FLASH process delivers low-power operation with typical sleep currents under 1µA. The architecture combines a Harvard bus (separate program and data paths) with RISC-like instruction execution, which simplifies code density and deterministic timing. Five 10-bit ADC channels support conversion of analog sensor signals at up to 100ksps, while two PWM modules enable motor control, lighting, or power-conversion applications. Typical applications include industrial control and sensing nodes, HVAC actuator control, consumer appliance interfaces, automotive body electronics (non-safety), battery chargers, and small- to mid-complexity embedded systems requiring reliable FLASH reprogrammability. The PIC16F886 is the recommended successor for new designs; PIC16F876-20/SP is most often sourced for legacy system maintenance. When designing, route VDD with a 0.1µF decoupling capacitor close to the pin, ensure MCLR has proper pull-up, and respect the 20MHz oscillator limit. In-circuit programming requires the ICSP header; consult the Microchip PIC16F87X programming specification for timing and voltage constraints. This page synthesizes distributor pricing, drop-in alternatives such as the PIC16F876A-I/SP enhanced successor, and practical design notes not consolidated on the manufacturer product page, providing a single reference for engineers evaluating, sourcing, or maintaining PIC16F876-20/SP designs.

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PIC16F876-20I/SO - 8-bit 20MHz 14KB Flash MCU | Microchip
PIC16F876-20I/SO

PIC16F876-20I/SO - 8-bit 20MHz 14KB Flash MCU | Microchip

The Microchip Technology PIC16F876-20I/SO is an 8-bit CMOS Flash microcontroller in the PIC16 mid-range family, delivering 20MHz operation (200ns instruction cycle), 14KB of Flash program memory and 368 bytes of RAM in a 28-pin SOIC package. The 'I' suffix denotes the industrial temperature grade (-40C to +85C) and the '20' speed grade denotes 20MHz maximum oscillator frequency, with the device supplied in a wide SOIC-28 outline suitable for hand-soldered prototypes and reflow production. Core peripherals include 256 bytes of EEPROM, five 10-bit ADC channels, two 8-bit timers plus one 16-bit timer, two Capture/Compare/PWM (CCP) modules, an MSSP configurable as SPI or I2C, a USART, and an ICD (In-Circuit Debug) interface. A PIC16F 8-bit RISC microcontroller is a Harvard-architecture MCU with separate program and data buses, executing one instruction per cycle (except branches) from a compact RISC instruction set. The PIC16 family is positioned under Microchip's higher-end PIC18 and PIC24 families in the 8-bit MCU taxonomy and remains popular for cost-sensitive embedded control due to its low part price, broad tool support, and the MPLAB X IDE + XC8 compiler ecosystem. The 14KB Flash on the PIC16F876 is self-programmable under firmware control, enabling bootloader-style field updates. Key features of the PIC16F876 include the high-performance RISC CPU with only 35 single-word instructions, a 14-bit instruction word, an 8-level deep hardware stack, DC to 20MHz clock input, 22 digital I/O pins multiplexed with peripheral functions, power-managed sleep mode with multiple wake sources, and programmable code protection. The industrial grade -I suffix guarantees operation from -40C to +85C, while the SO package is JEDEC SO-7.50mm wide body. Architecturally the part uses a 14-bit wide Flash program store, an 8-bit data path, and a dual-oscillator option (XT/HS/RC/LP) plus a power-up timer and oscillator start-up timer that simplify board bring-up. The five 10-bit ADC channels are multiplexed onto shared analog input pins with software-selectable acquisition time, and the two CCP modules can operate in PWM, Capture or Compare modes for motor control or measurement timing. Typical applications include industrial sensor interfaces, motor control (small DC and stepper drives), consumer appliances, automotive body electronics sub-modules, battery chargers, and small-scale data acquisition front-ends. The wide SOIC footprint and industrial temperature range also suit HVAC controllers and security panel designs. When designing with the PIC16F876-20I/SO, note that Microchip recommends migrating to the PIC16F886 for new designs since the PIC16F876 is in long-term support. Use a 100nF decoupling capacitor adjacent to each VDD/VSS pair, configure the MCLR pin with the recommended external reset network, and reserve the ICD pins (RB6/RB7) for debug access during development. This page synthesizes distributor pricing, drop-in same-package alternatives, and engineering design notes not found on the manufacturer datasheet alone, giving procurement and design teams a single reference for both sourcing and migration decisions.

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PIC16F876A-E/ML - 8-bit 20MHz 14KB Flash MCU 28-QFN | Microchip
PIC16F876A-E/ML

PIC16F876A-E/ML - 8-bit 20MHz 14KB Flash MCU 28-QFN | Microchip

The Microchip Technology PIC16F876A-E/ML is an 8-bit PIC16 enhanced flash microcontroller (MCU) running at 20 MHz with 14 KB of program flash, 368 bytes of RAM, and 256 bytes of EEPROM data memory, housed in a 28-pin QFN (ML, 6x6 mm) package. It is the -40C to +125C extended-temperature variant and ships in tube packaging for industrial and automotive-grade embedded designs. What is an 8-bit flash microcontroller? An 8-bit flash MCU is a single-chip computer built around an 8-bit data path, with non-volatile program memory (flash), volatile working RAM, and on-chip peripherals. It belongs to the broader hierarchy: microcontroller -> embedded controller -> semiconductor IC. Microchip's PIC16 mid-range family is one of the longest-lived 8-bit architectures, valued for its 35-instruction RISC core, deterministic 200 ns instruction execution, and upward code compatibility with the PIC16C5X, PIC12CXXX, and PIC16C7X families. Key features of the PIC16F876A include in-circuit serial programming (ICSP) and self-programmability for field firmware updates, two analog comparators, five channels of 10-bit analog-to-digital conversion, two capture/compare/PWM (CCP) modules, and a master synchronous serial port configurable as either 3-wire SPI or 2-wire I2C. The 14 KB flash supports up to 8K single-word instructions. Technically, the device is built on a CMOS flash/EEPROM process and integrates a precision bandgap reference, brown-out reset (BOR), watchdog timer (WDT), and a wide operating voltage range suitable for both 3.3 V and 5 V rails. Its 22 I/O pins give designers generous headroom for mixed-signal designs. Typical applications include industrial automation, sensor interfacing, motor control via the CCP/PWM channels, battery management front-ends, automotive body electronics, and consumer device controllers. The 28-QFN (ML) package is well suited to space-constrained layouts where PCB real estate is at a premium. When designing with the PIC16F876A-E/ML, note that the -E suffix designates the -40C to +125C extended-temperature grade; choose the -I suffix (-40C to +85C) if your application is commercial. The 6x6 mm QFN footprint requires thermal vias under the exposed pad for reliable heat dissipation at maximum clock rate. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes that complement the manufacturer datasheet, helping engineers evaluate the PIC16F876A-E/ML against modern 8-bit and 32-bit alternatives for new designs and legacy maintenance.

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PIC16F876A-E/SS - 8-bit MCU, 14KB Flash, 28-SSOP | Microchip
PIC16F876A-E/SS

PIC16F876A-E/SS - 8-bit MCU, 14KB Flash, 28-SSOP | Microchip

The Microchip PIC16F876A-E/SS is an 8-bit enhanced flash microcontroller in the PIC16 mid-range family, offering 14KB of program Flash, 368 bytes of RAM, and 256 bytes of EEPROM in a 28-pin SSOP (Shrink Small Outline Package). It executes instructions at 200 ns per cycle (5 MIPS at 20 MHz), supports 35 single-word instructions, and integrates peripherals including a 10-bit A/D converter with up to 5 input channels, two 8/16-bit capture/compare/PWM modules, a synchronous serial port configurable as SPI or I2C, two analog comparators, and in-circuit debug (ICD) capability. An MCU (Microcontroller Unit) is a single-chip computer that integrates a CPU core, non-volatile program memory, working RAM, and peripheral interfaces on one die. The PIC16F876A belongs to the PIC16 family (8-bit Harvard RISC architecture), which sits within the broader category of microcontrollers in Microchip's 8-bit portfolio, alongside PIC12 and PIC18 lines. The "F" suffix denotes Flash program memory suitable for in-circuit serial programming (ICSP), while the "A" revision adds self-programming support and improvements to the original PIC16F876. Key features include instruction execution at 200 ns (200 nanosecond instruction execution), wide 2.0V to 5.5V operating voltage, self-programming for bootloader-style updates, programmable code protection, an integrated watchdog timer, and brown-out reset. The -E suffix designates the -40C to +125C extended industrial temperature grade, suitable for harsh-environment applications, while the /SS package designator indicates a 28-pin SSOP for surface-mount assembly. Typical applications include industrial control boards, sensor interfaces, low-end consumer electronics, motor control, lighting ballast, automotive body electronics, and educational/development platforms. The integrated 10-bit ADC and two comparators allow direct connection to analog sensors, while SPI/I2C enables communication with external EEPROMs, sensors, displays, and other microcontrollers. When designing with this device, ensure decoupling capacitors are placed within 1 cm of VDD, and unused I/O pins should be configured as outputs and tied low to minimize power consumption. The device can be programmed in-circuit via ICSP using a Microchip PICkit or ICD debugger. This page synthesizes distributor pricing, drop-in alternative MPNs, and design guidance not consolidated in the manufacturer datasheet alone.

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PIC16F876A-I/ML - 8-bit 20MHz 14KB Flash MCU 28-QFN | Microchip
PIC16F876A-I/ML

PIC16F876A-I/ML - 8-bit 20MHz 14KB Flash MCU 28-QFN | Microchip

The Microchip Technology PIC16F876A-I/ML is an 8-bit CMOS flash-based mid-range PIC microcontroller (MCU) built on the PIC16 architecture, executing instructions in 200 ns and offering 14KB (8K x 14) of on-chip program FLASH, 368 bytes of SRAM, and 256 bytes of EEPROM data memory. It is housed in a 28-pin QFN (6x6 mm) surface-mount package with an exposed thermal pad, operates from 2.0V to 5.5V, and runs at up to 20 MHz. The part is specified for the industrial temperature range of -40C to +85C as denoted by the "I" suffix. A mid-range PIC16 microcontroller is a class of 8-bit RISC MCU that combines a 35-instruction core, deterministic execution timing, on-chip peripherals, and self-programmable flash memory in compact packages. Within the broader taxonomy, it sits at microcontroller -> 8-bit MCU -> RISC MCU -> embedded controller -> semiconductor. The PIC16F876A family is upwards compatible with the PIC16C5X, PIC12CXXX and PIC16C7X device lines, helping engineers port legacy code to modern flash-based silicon without rewriting firmware. Key features include five channels of 10-bit Analog-to-Digital (A/D) conversion, two analog comparators, two Capture/Compare/PWM (CCP) modules, an ICD (In-Circuit Debugger) interface for live debugging, and a synchronous serial port that can be configured as either a 3-wire Serial Peripheral Interface (SPI) or a 2-wire Inter-Integrated Circuit (I2C) bus. An Enhanced Universal Synchronous Asynchronous Receiver Transmitter (EUSART) module provides additional serial connectivity, and 22 digital I/O pins support a wide variety of sensor, switch, and actuator interfaces. Typical applications for the PIC16F876A-I/ML include industrial control systems, automotive body electronics and lighting, communications equipment, wired networking nodes, personal electronics, and connected peripherals and printers. The combination of EEPROM, ADC, comparators, and CCP in a single 28-QFN footprint makes the part a strong fit for compact mixed-signal designs that previously required multiple discrete ICs. This page synthesizes distributor pricing, drop-in QFN-28 alternatives, and practical design notes not found in the manufacturer datasheet. All specifications, pinout information, and reference design guidance have been consolidated from Microchip documentation and authorized distributor listings for the PIC16F876A-I/ML.

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PIC16F876A-I/SS - 8-Bit 20MHz 14KB MCU 28-SSOP | Microchip
PIC16F876A-I/SS

PIC16F876A-I/SS - 8-Bit 20MHz 14KB MCU 28-SSOP | Microchip

The Microchip Technology PIC16F876A-I/SS is an 8-bit CMOS flash-based PIC16 mid-range microcontroller with 20 MHz maximum CPU clock (200 ns instruction cycle), 14 KB (8K x 14) of program Flash memory, 368 bytes of SRAM, and 256 bytes of EEPROM, packaged in a 28-pin SSOP (5.30 mm body). The -I temperature grade specifies an industrial -40C to +85C operating range and is suitable for consumer, industrial, and embedded control applications. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (ROM/Flash), data memory (RAM), and a rich set of peripherals (timers, ADC, communication ports, GPIO). Within the broader taxonomy, the PIC16F876A belongs to PIC16 family -> PIC16F mid-range 8-bit MCU -> flash MCU -> microcontroller -> semiconductor IC. Mid-range PIC16 MCUs are widely recognized for their 35-instruction RISC architecture, deterministic instruction execution, and ease of programming in both C and assembly. Key features include 22 digital I/O pins, five 10-bit ADC channels, two analog comparators, two capture/compare/PWM modules, a USART port, and a synchronous serial port configurable as either 3-wire SPI or 2-wire I2C. On-chip in-circuit debug (ICD) and self-programming capability allow field upgrades without external programmers. The Harvard memory architecture separates program and data buses, enabling simultaneous fetch and execute for deterministic real-time control. Typical applications include industrial sensor interfacing, low-cost motor control, automotive AC diagnostics, hobby robotics, and battery-powered Smart Sensing applications. The 5-channel 10-bit ADC allows direct connection to temperature sensors. When designing with the PIC16F876A-I/SS, pay attention to supply decoupling and in-circuit serial programming (ICSP) pin allocation to avoid conflicting with target application I/O. The device operates from 2.0 V to 5.5 V. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found on individual distributor product pages.

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PIC16F876AT-E/SO - 8-bit 20MHz MCU, 14KB Flash 28-SOIC | Microchip
PIC16F876AT-E/SO

PIC16F876AT-E/SO - 8-bit 20MHz MCU, 14KB Flash 28-SOIC | Microchip

The Microchip Technology PIC16F876AT-E/SO is an 8-bit RISC PIC microcontroller with 20 MHz core clock speed, 14 KB (8K x 14) of FLASH program memory and 256 bytes of EEPROM, packaged in a 28-pin SOIC (0.295 inch / 7.50 mm body width) with tape-and-reel packaging. The 'A' suffix denotes the redesigned silicon revision (PIC16F876A), while the 'T' indicates tape-and-reel orientation and 'E' marks the -40C to +125C extended operating temperature grade for automotive-grade deployments. A PIC microcontroller is a programmable System-on-Chip that integrates CPU core, non-volatile program memory (FLASH), volatile data RAM, EEPROM for parameter storage, and on-chip peripherals such as analog-to-digital converters, timers, and serial communication engines into a single CMOS device. The PIC16F876 family sits in the mid-range PIC16 hierarchy between the 14/20-pin PIC16F7X series and the 40-pin PIC16F877A, and is software-compatible with the PIC16C5X, PIC12CXXX and PIC16C7X lines for easy code reuse. Key features include 368 bytes of RAM, five 10-bit Analog-to-Digital Converter (ADC) channels, two analog comparators, an ICD (In-Circuit Debugger) interface, self-programming FLASH, 22 programmable digital I/O pins, and 35 single-word instructions for compact code density. Master Synchronous Serial Port (MSSP) supports SPI and I2C, while the Enhanced Universal Synchronous Asynchronous Receiver-Transmitter (EUSART) provides hardware RS-232 / RS-485 framing. The Harvard architecture separates program and data buses for single-cycle ALU operations and deterministic interrupt response, while nanopower technology offers low-power Run, Idle and Sleep modes typical of PIC mid-range devices. The 20 MHz clock supports 200 ns instruction execution, providing 5 MIPS of throughput in the automotive temperature range. Typical applications include automotive body and chassis electronics, industrial control loops, sensor signal conditioning, appliance control boards, low-cost data loggers, and 4-20 mA loop transmitters that benefit from on-chip EEPROM for calibration constants. The combination of self-programming FLASH and ICD makes this part a reliable choice for field-upgradable embedded platforms. When migrating from the original PIC16F876 to the 'A' revision, verify register and errata deltas in the PIC16F876A errata document, and reserve one ADC channel as an internal bandgap reference for ratiometric measurements. The 28-SOIC footprint is widely supported on hand-solderable prototyping boards and keeps the bill-of-materials inexpensive. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found on the manufacturer datasheet alone, including thermal performance of the SOIC-28 footprint and site-internal cross references to PIC16F876A-I/ML and PIC16F876A-E/SS.

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PIC16F876AT-I/SO - 8-Bit 20MHz 14KB Flash MCU | Microchip
PIC16F876AT-I/SO

PIC16F876AT-I/SO - 8-Bit 20MHz 14KB Flash MCU | Microchip

The Microchip PIC16F876AT-I/SO is an 8-bit RISC microcontroller from the PIC16F87X family featuring 14KB of Flash program memory, 368 bytes of RAM, and 256 bytes of EEPROM, housed in a 28-pin SOIC (SO) package with Tape & Reel packaging. It operates from 2.0V to 5.5V with a maximum clock speed of 20MHz, delivers 5 MIPS of throughput, and integrates 22 digital I/O pins organized across multiple ports. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory, data memory, and peripherals on a single die. The 'PIC' (Peripheral Interface Controller) architecture uses a Harvard RISC design with a fixed instruction set that simplifies pipelining and decoding, allowing most instructions to execute in a single clock cycle. Within the broader taxonomy, PIC16F876A sits in the legacy mid-range 8-bit family, sitting between baseline (PIC10/12) and enhanced mid-range (PIC16F1xxx) families - well suited for control-oriented tasks rather than compute-intensive signal processing. The 'A' suffix denotes an enhanced flash revision with higher code density and improved peripherals versus the original PIC16F876. Key features include two 10-bit ADC modules with up to 8 channels, two 8-bit and one 16-bit timer, a USART with synchronous and asynchronous modes, a Master Synchronous Serial Port (MSSP) supporting SPI and I2C, an addressable 14-channel Capture/Compare/PWM module, and 22 source/sink I/O capable of 25 mA per pin for direct LED drive. Brown-out Reset (BOR), Power-On Reset (POR), and a Watchdog Timer with on-chip oscillator improve field reliability, while In-Circuit Serial Programming (ICSP) via two pins allows firmware updates without removing the part from the board. The enhanced flash cell supports 100,000 erase/write cycles and 40-year data retention per Microchip datasheet literature for the PIC16F87XA family. The 14-bit instruction word with 35 single-word instructions enables compact code while the 8-level hardware stack simplifies interrupt handling and real-time response. Typical applications include industrial control and sensor interfacing, automotive body and HVAC subsystems, consumer appliance control boards, low-power remote sensor nodes, and small home automation hubs. Compared with PIC16F873A, the F876A adds 6KB more Flash (14KB vs 8KB); compared with PIC16F877A, the F876A shares the same 14KB Flash but uses a 28-pin package rather than 40/44 pins - fewer I/O pins in exchange for a smaller PCB footprint. When designing with the PIC16F876A-I/SO, reserve the MCLR/VPP pin for ICSP and add a 10-47 kΩ pull-up plus a 100 nF decoupling cap adjacent to VDD. Always bypass VDD with a 100 nF X7R ceramic placed within 5 mm of the pin, and keep the analog VDD/VSS traces short and parallel to reduce ADC reference noise. The industrial (-I) temperature grade supports -40 °C to +85 °C; for automotive under-hood duty cycles consider PIC16F876A-E/SO (-40 °C to +125 °C) or the Q-graded automotive variants. This page synthesizes distributor pricing, drop-in alternatives within the 28-SOIC footprint, and practical design notes not found in the manufacturer datasheet.

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PIC16F876AT-I/SS - 14KB Flash 8-bit MCU 20MHz SSOP-28 | Microchip
PIC16F876AT-I/SS

PIC16F876AT-I/SS - 14KB Flash 8-bit MCU 20MHz SSOP-28 | Microchip

The Microchip Technology PIC16F876AT-I/SS is a high-performance 8-bit CMOS FLASH-based microcontroller from the PIC® 16F family, offering 14KB (8K x 14 words) of on-chip program memory, 368 bytes of RAM, and 256 bytes of EEPROM data memory in a 28-pin Shrink Small Outline Package (SSOP). It executes instructions in a 200 ns cycle at 20 MHz clock input and is supported by 22 digital I/O pins, a 10-bit Analog-to-Digital Converter with up to 5 channels, two analog comparators, USART, MSSP (SPI/I²C), and two 8/16-bit timer/counters with capture/compare/PWM modules. A microcontroller (MCU) is an integrated circuit that combines a CPU core, non-volatile program memory, RAM, and configurable peripherals into a single chip. Within the broader taxonomy, the PIC16F876A belongs to the 8-bit MCU family, derived from the RISC (Reduced Instruction Set Computer) architectural lineage, which uses a small fixed instruction set (35 single-word instructions for PIC16 mid-range) to simplify decoding and accelerate execution. MCUs sit within the semiconductor hierarchy alongside microprocessors, DSPs, and FPGAs, and are the foundational building block of embedded systems. Mid-range PIC16 devices strike a balance between 8-bit simplicity and integrated peripherals, making them common in industrial control, instrumentation, and consumer products. Key features that distinguish the PIC16F876A include its self-programmable FLASH memory (ICD/in-circuit debugger support), five channels of 10-bit ADC, two analog comparators with programmable reference, USART for asynchronous/synchronous serial, MSSP supporting SPI master/slave and I²C master/slave, and Capture/Compare/PWM modules. The 256-byte EEPROM is rated for 1 million erase/write cycles typical and supports data retention beyond 40 years. Brown-out Reset (BOR), Power-on Reset (POR), and the Watchdog Timer with its own on-chip RC oscillator deliver robust autonomous recovery. Operating voltage spans 2.0 V to 5.5 V, allowing operation from a single lithium cell up to a regulated 5 V rail. Typical applications include industrial sensor nodes with on-board A/D conversion, motor control (small DC and stepper drivers via PWM), HVAC thermostat controllers, battery chargers (CC/CV profiles), consumer appliances (coffee machines, washing machines), and serial-bus peripherals (RS-485 slave nodes, I²C sensor front-ends). The 28-pin SSOP footprint is pin-compatible across the PIC16F873A/876A family, allowing memory-upgrade flexibility without PCB rework. Design consideration: when migrating firmware between the 28-pin PIC16F873A (7KB Flash), PIC16F876A (14KB Flash), and 40/44-pin PIC16F874A/877A (14KB/28KB Flash), ensure that pin assignments for the A/D converter channels and the parallel slave port (PSP, only on 40/44-pin variants) are reviewed against the target pinout. The 'T' suffix indicates tape-and-reel packaging, and the 'I' indicates the industrial -40°C to +85°C temperature range. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.

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PIC16F876T-04/SO - 8-bit MCU 14KB Flash 28-SOIC | Microchip
PIC16F876T-04/SO

PIC16F876T-04/SO - 8-bit MCU 14KB Flash 28-SOIC | Microchip

The Microchip Technology PIC16F876T-04/SO is a CMOS FLASH-based 8-bit microcontroller from the PIC16F87X family, delivering 14KB of on-chip program memory, 368 bytes of RAM, 256 bytes of EEPROM data memory, and 22 digital I/O pins in a 28-pin SOIC package. It executes a 35-instruction RISC set at 200 ns per instruction (5 MHz oscillator with 4x PLL-equivalent timing at the -04 speed grade), and integrates a 10-bit ADC with up to 8 channels, two 8-bit timers plus one 16-bit timer, a USART with SPI/I2C master mode, MSSP for I2C/SPI, and a synchronous serial port. What is a PIC16F87X 8-bit MCU? The PIC16F87X is Microchip's mid-range PIC microcontroller family (PIC16 -> PICmicro 8-bit -> microcontroller -> semiconductor). It uses a Harvard RISC architecture with separate program and data buses, allowing single-cycle instruction fetch while data is being processed. Compared to lower-end PIC16C5X baseline parts, the PIC16F87X adds Flash program memory, an integrated ADC, hardware USART/MSSP peripherals, and on-chip EEPROM, eliminating the need for an external program ROM and shrinking BOM cost in embedded designs. Key features include 14KB self-programmable FLASH (100K erase/write cycle endurance), 256-byte EEPROM with 1M erase/write endurance, 22 source/sink capable I/O pins each rated to 25 mA, two analog comparators, a programmable brown-out reset (BOR), and a watchdog timer with its own on-chip RC oscillator. The -04 speed grade corresponds to a 4 MHz oscillator (200 ns instruction cycle), and the SO package supports an industrial operating temperature range when paired with the I-suffix variant. The PIC16F876T-04/SO uses a modified Harvard architecture with a 14-bit wide program word and an 8-bit data path, which improves code density relative to 8-bit CISC designs. The integrated MSSP peripheral supports both SPI and I2C master/slave operation, allowing direct interface to serial EEPROMs, sensors, and display drivers without external glue logic. The device operates from 2.0V to 5.5V and includes In-Circuit Serial Programming (ICSP) via two pins for field firmware updates. Typical applications include industrial control nodes (sensor conditioning, relay/SSR drivers), HVAC thermostat control, motor control signal conditioning, low-cost data loggers with I2C sensors, and remote sensor nodes interfacing with SPI ADC front-ends. The combination of FLASH, EEPROM, ADC, and serial peripherals makes it a self-contained SoC for 8-bit embedded applications. When designing with this part, verify that the application firmware does not exceed 14KB, since the PIC16F876 cannot access program memory above that boundary (the pin-compatible PIC16F877 with 28-pin SPDIP/SOIC variants does not exist; migration to PIC16F886 is recommended for designs needing more memory). Place a 0.1 uF decoupling capacitor close to VDD/VSS and follow Microchip's recommended ICSP layout for in-circuit programming headers. This page synthesizes distributor pricing, drop-in SOIC-28 alternatives, and practical design notes not found in the standalone datasheet.

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PIC16F876T-04E/SO - 8-bit PIC MCU 14KB Flash 4MHz SOIC-28 | Microchip
PIC16F876T-04E/SO

PIC16F876T-04E/SO - 8-bit PIC MCU 14KB Flash 4MHz SOIC-28 | Microchip

The Microchip Technology PIC16F876T-04E/SO is an 8-bit RISC Flash microcontroller in the PIC16 mid-range family, packaged in a 28-pin SOIC (SO) with 14KB (8K x 14 words) of Flash program memory, 368 bytes of RAM, 256 bytes of EEPROM data memory, and a 4MHz internal oscillator rating with 200 ns instruction execution. The device integrates a 5-channel 10-bit Analog-to-Digital Converter (ADC), two 8-bit timers plus one 16-bit timer, a USART with both synchronous and asynchronous capability, a Master Synchronous Serial Port (MSSP) supporting SPI and I2C (master/slave), a 13-bit program counter, and 22 digital I/O pins. The "T" suffix denotes Tape & Reel packaging and "-04E" designates the 4MHz enhanced operating temperature range. A PIC microcontroller (Peripheral Interface Controller) is a family of 8/16/32-bit RISC microcontrollers built on a Harvard architecture that separates program and data memory buses, enabling simultaneous fetch and access. The PIC16F mid-range core uses a 14-bit instruction word set, only 35 single-word instructions, a hardware stack, and direct/indirect addressing modes. Within the broader taxonomy, PIC16F microcontrollers sit between the baseline PIC10/12/16 families and the high-performance PIC18/PIC24/dsPIC families, and are members of the wider class of Flash-based microcontrollers under the MCU (microcontroller unit) umbrella of integrated circuits. Key features of the PIC16F876T-04E/SO include in-circuit serial programming (ICSP) via two pins, in-circuit debugging, a watchdog timer with its own on-chip RC oscillator, a power-on reset, brown-out detect (BOD), power-saving sleep mode, and programmable code protection. The 256-byte on-chip EEPROM supports 1 million erase/write cycles typical, while Flash program memory supports 1000 erase/write cycles typical. The enhanced (-E) temperature range provides -40C to +125C operation suitable for industrial environments. Architecturally, the PIC16F876 uses a RISC CPU with single-cycle instruction execution except for program branches, an 8-bit ALU, and a 14-bit program memory bus. The ADC, communications peripherals, and timers operate independently from the CPU via the peripheral interrupt controller, allowing deterministic response times for real-time embedded applications. Typical applications include industrial control systems, sensor interfaces, motor control, consumer electronics, automotive body electronics, HVAC controls, and low-power remote sensor nodes. The combination of small footprint, low cost, and integrated ADC plus serial peripherals makes it well suited for cost-sensitive embedded designs. When designing with this MCU, allocate the ADC acquisition time carefully with respect to source impedance, and use a 0.1uF decoupling capacitor on VDD placed close to the pin. Brown-out reset and watchdog timer should be enabled in safety-critical applications. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

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PIC16F876T-04I/SO - 4MHz 8-bit Flash MCU, 14KB, 28-SOIC | Microchip
PIC16F876T-04I/SO

PIC16F876T-04I/SO - 4MHz 8-bit Flash MCU, 14KB, 28-SOIC | Microchip

The Microchip Technology PIC16F876T-04I/SO is a CMOS Flash-based 8-bit microcontroller from the PIC16F family, executing instructions in 200 ns (5 MIPS at 4 MHz) and packaged in a 28-pin SOIC. It integrates 14 KB of Flash program memory (8K x 14 words), 368 bytes of SRAM, 256 bytes of EEPROM, and 22 digital I/O pins across five I/O ports. Peripherals include a 10-bit multi-channel ADC, two 8-bit and one 16-bit timers, a USART, a Master Synchronous Serial Port (MSSP) supporting SPI and I2C, and a capture/compare/PWM (CCP) module. Operating voltage spans 2.0 V to 5.5 V (industrial -40C to +85C, I-grade), with 4 MHz being one of the supported oscillator grades (the '-04' speed suffix indicates the 4 MHz grade). A microcontroller (MCU) is a single-chip computer containing a CPU core, non-volatile program memory, working RAM, and on-chip peripherals. The PIC16F876 belongs to Microchip's mid-range PIC16 family, which uses a 14-bit instruction set with only 35 single-word instructions, providing deterministic execution and easy assembly-level debugging. Within the broader taxonomy, MCUs sit above general-purpose microprocessors by integrating memory and I/O on-die, enabling compact, low-power embedded designs across industrial, automotive aftermarket, consumer, and instrumentation markets. Differentiating features of the PIC16F876T-04I/SO include its 14 KB of self-programmable Flash (allowing in-circuit firmware upgrades via ICSP), 256 bytes of true EEPROM for non-volatile parameter storage, an integrated 10-bit ADC with up to 8 input channels, and the MSSP block which can be configured as either SPI or I2C. The wide 2.0-5.5 V supply range supports both 3.3 V and 5 V designs without external level shifters. The 200 ns instruction cycle at 4 MHz oscillator produces deterministic interrupt latency, important in real-time control loops such as motor drives and sensor sampling. Architecturally, the PIC16F876 uses a Harvard architecture with separate program and data buses, a hardware multiplier is absent in this mid-range core (multiplication is software-emulated), and the device includes a watchdog timer with its own on-chip RC oscillator for fail-safe operation. The CMOS process delivers low power consumption with sleep currents typically in the microampere range, suitable for battery-backed or energy-harvesting applications. Typical applications include industrial sensor conditioning with ADC, low-cost motor control with PWM/CCP, sensor networks with SPI/I2C peripherals, instrumentation front-ends, and educational platforms where PIC16-series familiarity accelerates development. The Microchip PIC16F886 is the recommended modern successor with enhanced features. When designing with this MCU, reserve at least one I/O pin for ICSP programming (PGD/PGC) and ensure the MCLR pin has the proper pull-up configuration; in-circuit serial programming requires the device to be reachable via these dedicated pins during firmware update. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.

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PIC16F876T-10E/SO - 8-Bit 10MHz 14KB Flash MCU | Microchip
PIC16F876T-10E/SO

PIC16F876T-10E/SO - 8-Bit 10MHz 14KB Flash MCU | Microchip

The Microchip Technology PIC16F876T-10E/SO is an 8-bit CMOS Flash-based microcontroller from the PIC16F family, delivering 10 MIPS performance (200 ns instruction execution) in a 28-pin SOIC wide-body package. It integrates 14 KB of Flash program memory (8K x 14 words), 368 bytes of RAM, and 256 bytes of EEPROM data memory, with a 10 MHz maximum operating clock speed and a 2.0V to 5.5V wide operating voltage range. The part is rated for the extended industrial temperature range (-40C to +125C), as indicated by the "E" designator. A PIC microcontroller (Programmable Interface Controller) is a Harvard-architecture RISC processor family designed by Microchip Technology. The PIC16F series occupies the mid-range of the PIC16 family, offering more peripherals and memory than baseline PIC12/PIC14 parts while remaining easy to program with only 35 single-word instructions. PIC MCUs sit in the broader hierarchy of embedded microcontrollers, alongside AVR, 8051, and ARM Cortex-M0 devices, and are widely used for low-cost, deterministic real-time control in industrial and consumer applications. Key features of the PIC16F876T-10E/SO include five 10-bit Analog-to-Digital Converter (ADC) channels, two 8-bit and one 16-bit timers, a Universal Synchronous/Asynchronous Receiver/Transmitter (USART), a Master Synchronous Serial Port (MSSP) supporting both SPI and I2C, a Capture/Compare/PWM (CCP) module, and a watchdog timer with its own on-chip RC oscillator. The on-chip In-Circuit Serial Programming (ICSP) interface and In-Circuit Debugger (ICD) support simplify firmware development and field upgrades. Architecturally, the PIC16F876 uses a 14-bit instruction word with an 8-bit data path, a 2-stage pipeline, and separate program and data buses (Harvard architecture). This design provides deterministic instruction timing and efficient code density for control loops, while the 10 MHz oscillator combined with the 4-clock-per-instruction cycle yields 10 MIPS throughput. Typical applications include industrial automation controllers, sensor interface modules, automotive body electronics (non-safety), HVAC control boards, consumer appliance interfaces, and battery-powered measurement instruments. The wide SOIC-28 footprint supports both hand-soldering for prototypes and high-volume reflow assembly, making it suitable for designs migrating from the older PIC16F84 series to a more capable peripheral set. When designing with this part, plan for a 10 MHz maximum external clock (the "-10" speed suffix); choose the -20 variant if higher throughput is needed. The "E" temperature grade extends the operating range to +125C, suitable for industrial enclosures but not for AEC-Q100 automotive qualification - consider the PIC16F876A-I/SO for automotive projects. Always include proper decoupling (100 nF plus bulk capacitor) close to VDD/AVDD pins. This page synthesizes Microchip PIC16F876 datasheet values, current distributor pricing and stock, drop-in alternative MPNs, and practical design notes that go beyond the manufacturer datasheet itself.

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PIC16F876T-20I/SO - 8-Bit 20MHz 14KB Flash MCU | Microchip
PIC16F876T-20I/SO

PIC16F876T-20I/SO - 8-Bit 20MHz 14KB Flash MCU | Microchip

The Microchip Technology PIC16F876T-20I/SO is an 8-bit CMOS FLASH-based microcontroller from the PIC16F family, executing one instruction every 200 ns at 20 MHz and packaged in a 28-pin SOIC wide-body (SO) tape-and-reel form. The device integrates 14 KB (8K x 14 words) of program FLASH, 368 bytes of RAM, 256 bytes of EEPROM data memory, and 22 digital I/O pins, while consuming less than 2 mA at 5 V, 4 MHz. A microcontroller (MCU) is a single-chip computer containing a CPU, non-volatile program memory, RAM, peripherals, and I/O. The PIC16F876 belongs to Microchip's mid-range PIC16 family, which sits hierarchically under 8-bit microcontroller -> RISC microcontroller -> embedded controller -> semiconductor. The mid-range core delivers deterministic, single-cycle instruction execution with a small, easy-to-learn 35-instruction set, making the family popular in industrial control, consumer, and automotive body-electronics designs. Key features of the PIC16F876T-20I/SO include 10-bit ADC with up to 8 channels, a USART for asynchronous/synchronous serial, an MSSP module supporting SPI and I2C (master/slave), two 8-bit timers plus one 16-bit timer, a Watchdog Timer with its own on-chip RC oscillator, and dual analog comparators. The instruction set is fully upwards compatible with PIC12Cxxx, PIC16C5x, and PIC16C7x devices, allowing firmware reuse across the family. Architecturally, the PIC16F876 uses a Harvard RISC core with separate program and data buses and a 14-bit instruction word. The wide-body SOIC package supports industrial -40C to +85C operating range, and Microchip's nanoWatt features provide power-managed idle and sleep modes for battery-friendly designs. Per Microchip's product page, Microchip recommends migrating new designs to the PIC16F886, which offers more memory and peripherals at a similar price point. Typical applications include sensor interfaces with on-chip ADC, low-cost motor-control loops using the comparators and PWM timers, and serial-display or EEPROM front-ends via I2C/SPI. The wide SOIC-28 footprint is breadboard-friendly, simplifying prototyping. When migrating firmware, note that the 20I suffix denotes 20 MHz, industrial temperature, and the SO package - all important to verify before substituting another PIC16F87x variant. The T suffix on PIC16F876T indicates tape-and-reel packaging, otherwise pin- and code-compatible with the tube-packaged PIC16F876-20I/SO. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

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PIC16F877-04/L - 4MHz 8-Bit Flash MCU, 14KB, 44-PLCC | Microchip
PIC16F877-04/L

PIC16F877-04/L - 4MHz 8-Bit Flash MCU, 14KB, 44-PLCC | Microchip

The Microchip Technology PIC16F877-04/L is an 8-bit CMOS Flash-based PIC microcontroller delivering 4 MHz (200 ns instruction cycle) performance in a 44-pin PLCC (16.59 x 16.59 mm) package. It integrates 14 KB of program Flash, 368 bytes of RAM, and 256 bytes of EEPROM data memory, with 33 digital I/O pins arranged across five ports (PORTA–PORTE). The -04 speed grade denotes the 4 MHz crystal oscillator variant optimized for cost-sensitive, non-industrial clocking environments. An 8-bit microcontroller (MCU) is a single-chip computer that contains a CPU, program memory, data RAM, and a fixed set of peripherals, all accessed through a unified instruction set. The PIC16F877 family belongs to Microchip's mid-range PIC architecture, sitting hierarchically between the baseline PIC10/12/16 families and the high-performance PIC18/dsPIC families. PIC16F MCUs are widely used because they offer Harvard-architecture efficiency with only 35 single-word instructions, allowing deterministic timing for embedded control tasks. The 'F' suffix indicates Flash program memory, which supports in-circuit serial programming (ICSP) for field upgrades. Key features include an 8-channel, 10-bit Analog-to-Digital Converter (ADC), two 8-bit timers plus one 16-bit timer, two Capture/Compare/PWM (CCP) modules, a Watchdog Timer (WDT) with its own on-chip RC oscillator, and a Synchronous Serial Port configurable as either SPI or I²C. The PIC16F877 also implements In-Circuit Debugger (ICD) support, simplifying firmware development on the production hardware. According to the Microchip product page, the device is recommended for new designs to migrate to the PIC16F887 or PIC16F877A, although the PIC16F877-04/L remains in active production for legacy systems. The architecture uses a Harvard memory layout with a 14-bit instruction word and a separate 8-bit data bus, achieving deterministic interrupt latency ideal for motor control and real-time I/O. The 10-bit ADC runs up to 8 channels with selectable reference voltages, providing acquisition-and-conversion throughput adequate for environmental and instrumentation sensor reads. Five I/O ports allow the MCU to drive up to 33 general-purpose signals, plus dedicated analog inputs, capture inputs, and PWM outputs. Typical applications include industrial automation controllers (sensor interfacing and relay driving), consumer appliance control panels (washing machines, HVAC), automotive body electronics (interior lighting, mirror control), and educational/development platforms due to its breadboard-friendly legacy. The 44-PLCC package suits socketed prototyping, allowing fast field replacement without soldering. When designing with the PIC16F877-04/L, ensure the system clock does not exceed 4 MHz, and apply Microchip's recommended decoupling (0.1 µF ceramic plus 10 µF bulk) on VDD. Designers targeting extended temperature ranges should select the -I or -E suffix industrial-grade variants rather than the -04/L grade, which is commercial temperature rated. This page synthesizes distributor pricing, parametric comparisons, and practical engineering notes that complement the manufacturer's datasheet, helping procurement and design engineers select, source, and apply this legacy PIC microcontroller confidently.

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PIC16F877-04/P - 4MHz 8-Bit Flash MCU 14KB | Microchip
PIC16F877-04/P

PIC16F877-04/P - 4MHz 8-Bit Flash MCU 14KB | Microchip

The Microchip Technology PIC16F877-04/P is a 4 MHz, 8-bit CMOS Flash microcontroller with 14 KB of program memory, 256 bytes of EEPROM, 368 bytes of RAM, and 33 I/O pins in a 40-pin PDIP package. It combines eight 10-bit ADC channels, UART/USART, SPI, I2C, timers, PWM, capture/compare functions, brown-out reset, and watchdog support in a legacy-compatible embedded-control platform. A microcontroller is a compact integrated circuit that executes programmed instructions and coordinates sensors, actuators, communications, and timing functions. The PIC16F877 belongs to the PIC16 family of 8-bit RISC microcontrollers and provides a broad peripheral set for embedded systems, instrumentation, motor-control support, communications, and legacy control designs. The -04 suffix identifies the 4 MHz speed grade, while /P denotes the PDIP package. Key features include 8K words of Flash program memory, 256 bytes of EEPROM data memory, 368 bytes of RAM, 33 I/O lines, and a 10-bit ADC with eight channels. The device also provides synchronous serial capabilities configurable for SPI or I2C, a serial port usable as UART/USART, two additional timers, and two capture/compare/PWM functions. Its 40-pin package provides convenient through-hole construction and broad signal access. The PIC16F877 architecture supports the PIC instruction set and combines EEPROM, Flash programming, and self-programming capabilities. The manufacturer product page describes the device as a 200 ns instruction-execution architecture with 35 single-word instructions. These features make it useful where deterministic control, moderate memory capacity, and a mature peripheral combination are more important than very high clock speed or very large flash capacity. Typical applications include industrial control panels, data acquisition and instrumentation, educational electronics, motor and relay interfaces, sensor nodes, communications bridges, and legacy embedded products. The ADC supports analog measurement, while UART, SPI, and I2C allow connection to sensors, transceivers, displays, and storage devices. The 33 I/O pins provide flexibility for control and status signals. For new layouts, verify oscillator, programming, reset, analog, and serial-interface requirements against the manufacturer datasheet before finalizing the PCB. Existing PIC16F877 systems may be easier to maintain with the same device family, but firmware, timing, and pin-level compatibility must be checked whenever the MCU is changed. This page combines verified product facts with practical application guidance and clearly flags unavailable specifications.

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

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

The Microchip Technology PIC16F877-04/PQ is a mid-range PIC16 family 8-bit CMOS FLASH microcontroller (MCU) running at up to 4 MHz with 200 ns instruction execution, packaged in a 44-pin MQFP (10x10 mm). It integrates 14 KB (8K x 14) of FLASH program memory, 368 bytes of data RAM, and 256 bytes of data EEPROM, and exposes 33 digital I/O lines through three I/O ports. An 8-bit microcontroller is a single-chip processor with an 8-bit data path, on-chip program and data memory, and integrated peripherals, used to read sensors, drive actuators, and orchestrate real-time control loops in embedded systems. The PIC16F877 belongs to the hierarchy: microcontroller -> 8-bit MCU -> mid-range PIC16 family -> FLASH-based PIC16F8XX sub-family -> peripheral-rich PIC16F87X series, sitting beneath 16-bit dsPIC/PIC24 and 32-bit PIC32 devices in Microchip's MCU portfolio. Its RISC architecture executes one instruction per 200 ns internal clock cycle, simplifying deterministic real-time code while keeping the instruction set to 35 single-word opcodes. Key features include 14 KB self-programmable FLASH, 256 bytes of EEPROM for non-volatile data storage, a 10-bit ADC with up to 8 channels, two PWM modules, two analog comparators, three timers (Timer0/Timer1/Timer2), and the PIC16 synchronous/asynchronous serial port (USART/SCI) plus an MSSP module that supports both SPI master/slave and I2C master/slave. The 33 I/O pins can each source/sink up to 25 mA, suitable for LED driving and small relays, and the device supports in-circuit serial programming (ICSP) via two pins for field upgrades. Architecturally, the PIC16F877 uses a Harvard bus with separate program and data paths, an 8-bit ALU, and a 14-bit instruction word. The 4 MHz external crystal yields a 1 MHz instruction rate (Fosc/4), and the part is specified for the commercial 0C to +70C range. Compared to the newer PIC16F877A revision, the original PIC16F877 uses 14-bit core instructions, while the 'A' revision adds a wider instruction set and faster ADC - which is why Microchip recommends the PIC16F887 as the modern drop-in successor. Typical applications include industrial automation controllers, HVAC sensor nodes, automotive body electronics, educational development boards, smart-card readers, and embedded data-acquisition front-ends. The PIC16F877-04/PQ specifically is the 44-pin MQFP surface-mount variant of the family. According to the Microchip PIC16F877 datasheet, it is recommended for designs where 4 MHz operation, FLASH reprogrammability, and a large 44-pin QFP footprint are required. When designing with this part, allocate adequate decoupling (100 nF ceramic plus 10 uF bulk) on VDD/AVDD/VSS/AVSS, and follow Microchip's Emulation/ICSP header layout if you plan to debug in-circuit. Watch out for the brown-out reset (BOR) configuration fuse - leaving it disabled can produce erratic starts on slow-rising supplies. Designers considering migration should evaluate the PIC16F877A-I/PQ or PIC16F887-I/PQ, which are pin-compatible upgrades. This page synthesizes distributor pricing from DigiKey and Mouser, drop-in same-package alternatives, and practical design notes not collected on any single manufacturer page.

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

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

The Microchip Technology PIC16F877-04/PT is an 8-bit CMOS FLASH-based microcontroller in the PIC16F family, offering 14KB of program memory and operating at a maximum clock speed of 4MHz. It is housed in a 44-pin TQFP package (10x10 mm) and features 368 bytes of RAM, 256 bytes of EEPROM, 33 digital I/O lines, and 8 channels of 10-bit Analog-to-Digital (A/D) conversion. A microcontroller (MCU) is a single-chip computer that integrates a CPU, memory (Flash program memory, RAM, and EEPROM), and configurable peripherals such as timers, communication interfaces, and analog inputs. Within the broader taxonomy, the PIC16F877-04/PT belongs to the 8-bit MCU class, which sits under the hierarchy of microcontrollers -> microprocessors -> digital ICs -> semiconductors. The 4MHz part suffix indicates the maximum oscillator frequency, while /PT denotes the TQFP-44 package. The device executes instructions in a 200ns single-cycle period and supports 35 single-word instructions, making it one of the most widely adopted mid-range 8-bit MCUs in legacy industrial and educational designs. Key features include on-chip self-programming support, In-Circuit Debugger (ICD), two additional timers (Timer1 with dedicated 16-bit architecture, Timer2), two Capture/Compare/PWM (CCP) modules, and a Synchronous Serial Port (SSP) configurable as either 3-wire SPI or 2-wire I2C. The USART module enables asynchronous and synchronous serial communication. Together with the Parallel Slave Port, these peripherals give designers broad flexibility for embedded control. Architecturally, the PIC16F877-04/PT is built on Microchip's enhanced mid-range 14-bit instruction set with a Harvard bus structure separating program and data paths, which allows simultaneous instruction fetch and operand access. Its 14-bit wide program memory word and 8-bit data path optimize both code density and execution determinism, making it well-suited for real-time control loops. The device operates across 2.0V to 5.5V and supports industrial temperature ranges. Typical applications include industrial automation controllers, HVAC and building control systems, sensor signal conditioning nodes, motor control via the CCP/PWM outputs, and educational development boards. The 33 I/O pins and ample peripheral set also make it a frequent choice for prototype to production transitions where a stable, well-documented toolchain is required. When designing with this device, ensure that the oscillator configuration matches the speed grade - the 04 suffix limits operation to 4MHz maximum, while higher-speed variants (e.g., PIC16F877-10/PT, PIC16F877-20/PT) support 10MHz and 20MHz respectively. For new designs, Microchip recommends the PIC16F887 as a modern functionally compatible successor. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not found in the manufacturer datasheet alone.

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PIC16F877-04E/L - 8-Bit MCU 14KB Flash 4MHz 44-PLCC | Microchip
PIC16F877-04E/L

PIC16F877-04E/L - 8-Bit MCU 14KB Flash 4MHz 44-PLCC | Microchip

The Microchip Technology PIC16F877-04E/L is a 8-bit CMOS FLASH-based PIC microcontroller packaged in a 44-pin PLCC (J-Lead) form factor, executing one instruction every 200 nanoseconds at an operating frequency of 4 MHz (the "-04" speed grade). The "E" suffix denotes the extended industrial temperature grade (-40C to +125C), while the "L" package code identifies the 44-pin PLCC with J-leads. An 8-bit microcontroller (MCU) is a small computer-on-a-chip integrating a CPU, RAM, non-volatile program memory, and peripherals (timers, ADC, USART, I/O ports) into a single IC. The PIC16F877 sits within the legacy PIC16F mid-range family, which follows the taxonomy: PIC16F family -> PIC mid-range MCU -> 8-bit microcontroller -> microcontroller -> embedded processor -> semiconductor. It is code-compatible with PIC12Cxxx, PIC16C5X, and PIC16C7X devices, simplifying firmware portability across the platform. Key features include 14 KB of FLASH program memory (8K x 14 words), 368 bytes of RAM, 256 bytes of EEPROM data memory, 33 digital I/O pins, an internal 10-bit ADC with 8 input channels, two 8-bit and one 16-bit timers, a USART, MSSP (SPI/I2C), and a parallel slave port. Five oscillator options (RC, LP, XT, HS, external clock) and four selectable brown-out reset trip points give designers flexibility across 2.0V to 5.5V supply rails. The 35 single-word instruction set keeps the learning curve shallow for engineers new to the PIC architecture. Typical applications include industrial control boards, automotive body and HVAC subsystems (within the extended temperature range), white-goods motor control, instrumentation front-ends, low-cost data loggers, and educational/development platforms. The 4 MHz top speed is sufficient for slow-speed sensor sampling, keypad scanning, and UART-based telemetry; for higher throughput consider the -10 or -20 speed grades of the same family. Design considerations: confirm your oscillator mode and capacitor loading match the 4 MHz spec; verify the PLCC socket matches the J-lead footprint; budget the 368-byte RAM carefully - heavy stack use or large buffers will overflow quickly; consider migrating to PIC16F887 or PIC16F1xxx for new designs, as Microchip recommends the 887 for all new projects.

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PIC16F877-04E/P - 8-Bit 4MHz 14KB Flash MCU | Microchip
PIC16F877-04E/P

PIC16F877-04E/P - 8-Bit 4MHz 14KB Flash MCU | Microchip

The Microchip Technology PIC16F877-04E/P is an 8-bit CMOS flash microcontroller rated at 4 MHz, with 14 KB of program memory, 368 bytes of RAM, and 33 I/O in a 40-pin through-hole DIP package. Its -04 suffix identifies the 4 MHz speed grade, while the E suffix denotes the extended-temperature device and the P suffix identifies the plastic package. A microcontroller is a programmable system-on-chip that integrates a CPU, memory, I/O, timers, serial interfaces, and optional analog conversion on one die. The PIC16F877 belongs to Microchip's PIC16 8-bit microcontroller family and is commonly used as the central controller in embedded products. Because the PIC16F877 combines 40 I/O lines with several dedicated peripherals, it can coordinate discrete logic, communications, timing, and analog measurements without requiring many external devices. Verified product information identifies 14 KB of flash program memory, 368 bytes of RAM, 33 I/O, and a 4 MHz operating speed. The Microchip product page also identifies 256 bytes of EEPROM data memory, self-programming, an ICD, eight 10-bit A/D channels, two additional timers, two capture/compare/PWM functions, and a synchronous serial port configurable for SPI or I²C. These resources make the PIC16F877 suitable for legacy industrial controls, instrument panels, sensor interfaces, and compact embedded controllers. The PIC architecture and 40-pin DIP package support straightforward breadboard prototyping and through-hole PCB assembly. The large package also exposes substantially more I/O than smaller 8-bit devices, which is useful when actuators, displays, relays, and communication peripherals cannot be multiplexed onto a small pin count. Firmware and peripheral configuration must follow the manufacturer PIC16F877 documentation rather than assuming compatibility with unrelated 8-bit MCUs. A key design consideration is the distinction between electrical compatibility and complete drop-in equivalence. A candidate MCU may use the same 40-pin DIP outline while differing in oscillator behavior, memory map, peripherals, interrupts, timing, voltage limits, or programming interface. Before substitution, engineers should compare the exact MPN, package, pin names, maximum frequency, flash and RAM capacity, ADC behavior, timers, and serial interfaces. This product page consolidates verified distributor and manufacturer information, a 40-pin package mapping, commercial availability details, and cautious substitution guidance. It also distinguishes verified values from parameters that were not supplied, avoiding unsupported claims and making the resulting engineering comparison easier to audit before a purchase or redesign.

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PIC16F877-04E/PQ - 8-bit MCU, 14KB Flash, 4MHz, 44-MQFP | Microchip
PIC16F877-04E/PQ

PIC16F877-04E/PQ - 8-bit MCU, 14KB Flash, 4MHz, 44-MQFP | Microchip

The Microchip Technology PIC16F877-04E/PQ is an 8-bit CMOS Flash-based RISC microcontroller from the PIC16F family, offering 14KB (8K x 14) of on-chip program memory, 368 bytes of RAM, and 256 bytes of EEPROM data memory in a 44-pin Metric Quad Flat Pack (MQFP) package. It executes instructions in a 200 ns cycle at a 4 MHz clock (10 MHz equivalent at higher speeds) using only 35 single-word instructions, giving the PIC16F877-04E/PQ an outstanding MIPS-to-power ratio for its class. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory (Flash/ROM), data memory (RAM), non-volatile EEPROM, and a configurable set of peripherals (timers, ADC, USART, I/O ports, PWM, I2C/SPI). Within the semiconductor hierarchy, an MCU sits above a microprocessor (which requires external memory) and below a SoC (system-on-chip with application processor cores). The PIC16F877-04E/PQ belongs to Microchip's mid-range PIC16F877 family, which became an industry workhorse for embedded control because of its simple instruction set, deterministic timing, and rich peripheral set. Key features of the PIC16F877-04E/PQ include 33 digital I/O pins, a 10-bit 8-channel Analog-to-Digital Converter (ADC), two 8-bit and one 16-bit timers, a USART with RS-485 support, an MSSP module (Master Synchronous Serial Port) supporting SPI and I2C (both Master and Slave), a Parallel Slave Port, a Capture/Compare/PWM module, and a watchdog timer with its own on-chip RC oscillator. The 04E speed grade denotes a 4 MHz maximum oscillator input, and the E suffix indicates the Extended (Automotive) temperature range of -40C to +125C. The device uses a Harvard RISC architecture with separate program and data buses, providing predictable instruction execution. Its 14-bit instruction word enables most operations to complete in a single cycle, and the wide instruction encoding supports literal, register, and branch operations without dedicated move instructions. Typical applications for the PIC16F877-04E/PQ include industrial control systems, automotive body and chassis electronics, sensor interface boards, low-power instrumentation, motor control, HVAC controls, and educational development platforms. Its 33 I/O pins comfortably support keypad scanning, LCD driving, and multi-drop communication buses. When designing with this part, observe the brown-out reset, power-on reset, and watchdog configuration bits in the configuration word; misuse of these settings is a common cause of field returns. Also confirm that your application code fits within the 14KB Flash and 8-level hardware stack, since the PIC16F877 family lacks the extended stack and interrupt hardware of the newer PIC18 and PIC16F1xxx Enhanced mid-range families. This page synthesizes distributor stock levels, parametric drop-in alternatives, and practical design notes that complement the manufacturer datasheet for the PIC16F877-04E/PQ.

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PIC16F877-04E/PT - 8-bit PIC MCU, 14KB Flash, 44-TQFP | Microchip
PIC16F877-04E/PT

PIC16F877-04E/PT - 8-bit PIC MCU, 14KB Flash, 44-TQFP | Microchip

The Microchip Technology PIC16F877-04E/PT is a CMOS Flash-based 8-bit PIC microcontroller executing one instruction every 200 ns at 4 MHz, packaged in a 44-pin TQFP (10x10 mm) with 14 KB (8K x 14) of Flash program memory, 368 bytes of RAM, and 256 bytes of EEPROM data memory. The PIC16F877-04E/PT operates from 2.0 V to 5.5 V and provides 33 digital I/O pins across five ports (PORTA-PORTE). What is an 8-bit PIC microcontroller? An 8-bit PIC microcontroller is a RISC-based Harvard-architecture MCU from Microchip Technology. The PIC16F877 belongs to the mid-range PIC16F family, sits inside the broader PIC16F family, and is part of Microchip's 8-bit microcontroller portfolio alongside PIC18 and PIC10/12/16 devices. These MCUs integrate CPU core, Flash program memory, SRAM, EEPROM, ADCs, timers, and communication peripherals on a single chip. Key features of the PIC16F877-04E/PT include 200 ns instruction execution, 8 channels of 10-bit Analog-to-Digital conversion, two 8-bit timers plus one 16-bit timer, two Capture/Compare/PWM modules, an MSSP configurable as SPI or I2C, a USART, an ICD (In-Circuit Debugger) interface, and self-programming support. The -04E suffix indicates a 4 MHz speed grade with the Extended temperature range. The architecture is built on a 14-bit instruction word with a 35-instruction RISC set, delivering deterministic interrupt latency and predictable timing. The 10-bit ADC provides 8 input channels at conversion rates suitable for sensor signal acquisition, while the two PWM/Capture/Compare modules can drive motor control, LED dimming, or waveform generation tasks. Applications include industrial automation controllers, sensor signal acquisition systems, motor control boards, embedded instrumentation, and legacy equipment retrofits. The PIC16F877A is the preferred successor for new designs; the -04E/PT is intended for maintenance of existing designs. When designing with this part, ensure Vdd decoupling with 100 nF and 10 uF capacitors placed close to the supply pins. The MCLR pin requires proper configuration for in-circuit debugging or reset. Use ICD2/ICD3 programmers for development. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet. The PIC16F877 datasheet (DS30292C) remains the authoritative reference for electrical characteristics and peripheral configuration.

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PIC16F877-04I/L - 4MHz 8-Bit Flash MCU, 14KB Flash | Microchip
PIC16F877-04I/L

PIC16F877-04I/L - 4MHz 8-Bit Flash MCU, 14KB Flash | Microchip

The Microchip Technology PIC16F877-04I/L is an 8-bit Flash-based CMOS microcontroller from the PIC® 16F family, operating at 4 MHz with 14 KB (8K x 14) of Flash program memory, housed in a 44-pin PLCC (16.59 x 16.59 mm) through-hole package with industrial-grade -40C to +85C temperature range. A microcontroller (MCU) is a single-chip computer containing a CPU core, non-volatile program memory (Flash/ROM), volatile data memory (RAM), and integrated peripherals such as timers, ADC, communication buses, and I/O ports. Within the broader taxonomy, a microcontroller sits between a microprocessor (CPU only) and a system-on-chip (SoC); the PIC16F877 is a Harvard-architecture MCU (separate program/data buses) optimized for deterministic, low-power embedded control. It belongs to the industry-standard "8-bit MCU" class, the same category as the Intel 8051, AVR ATmega, and STM8 families. Key features include 368 bytes of RAM, 256 bytes of EEPROM data memory, 33 digital I/O pins, an 8-channel 10-bit Analog-to-Digital (A/D) converter, two Capture/Compare/PWM modules, a USART, an MSSP configurable as SPI or I2C, two additional timers, and an ICD (In-Circuit Debug) interface. The 04 speed grade denotes a 4 MHz oscillator; the I suffix indicates industrial temperature range (-40C to +85C); the L suffix denotes the lead-bearing 44-pin PLCC package. Architecturally, the PIC16F877 uses a RISC-based CPU with only 35 single-word instructions and 200 ns instruction cycle time, providing deterministic real-time behaviour. The 14-bit instruction word width, separated code/data buses, and integrated hardware peripherals reduce external component count. Typical applications include industrial control systems, sensor interfaces, motor control, home appliances, automotive body electronics (sub-systems), instrumentation, and educational/hobbyist development boards. The integrated ADC and PWM make it especially suited for closed-loop analog control loops. When designing with this part, ensure the oscillator configuration (XT/HS/RC) matches the chosen crystal and load capacitors; the PLL is NOT present on the PIC16F877, so external clock multiplication is unavailable. For new designs consider the pin-compatible PIC16F887 or PIC16F877A which add enhanced features at similar cost. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found on a single manufacturer or distributor page.

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