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

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

The Microchip Technology PIC16F877T-04E/PQ is a member of the PIC16F877 family of 8-bit CMOS FLASH-based microcontrollers packaged in a 44-pin MQFP (Metric Quad Flat Pack, 10x10 mm) and supplied on Tape & Reel. The part integrates 14KB of program memory (8K x 14 words), 368 bytes of data RAM, and 256 bytes of EEPROM data memory, executing instructions in 200 ns at 4 MHz across the 2.0 V to 5.5 V operating range. The 'T' suffix denotes Tape & Reel packaging, the '04' denotes a 4 MHz maximum oscillator frequency, the 'E' suffix marks the Enhanced (industrial) -40C to +125C operating range, and the 'PQ' suffix indicates the 44-pin MQFP package. An 8-bit microcontroller (MCU) is a single-chip computer containing a CPU, program memory, RAM, EEPROM, timers, and peripherals such as ADC, USART, I2C/SPI, and I/O ports. The PIC16F877 belongs to Microchip's mid-range PIC® architecture, sitting between the PIC10/12/16 baseline families and the PIC18 enhanced family; 8-bit MCUs typically run application firmware rather than operating systems and are optimized for deterministic real-time control of sensors, actuators, displays, and communication links. Key features include 33 digital I/O pins, three 16-bit timers (Timer0, Timer1, Timer2) plus a watchdog timer, a 10-bit multi-channel Analog-to-Digital Converter (ADC), a USART for serial communication, an MSSP module supporting both SPI and I2C (master/slave), two Capture/Compare/PWM (CCP) modules, and an internal brown-out reset (BOR). The CMOS FLASH technology allows in-circuit serial programming (ICSP) through only two pins (RB6 and RB7), enabling in-field firmware updates and low-cost prototyping with a PICkit or ICD debugger. The Harvard architecture separates program memory (14-bit wide instructions, FLASH) from data memory (8-bit wide RAM, banked), allowing simultaneous instruction fetch and data access and contributing to the deterministic 200 ns instruction cycle. The enhanced instruction set contains 35 single-word instructions with 14-bit opcode, plus an 8-level deep hardware stack and interrupt handling for hardware peripherals. The device supports in-circuit debug (ICD) via the same RB6/RB7 pins used for ICSP, eliminating the need for an external debug header. Typical applications include industrial process control, sensor interface boards, motor control, HVAC subsystems, instrumentation front-ends, and legacy embedded systems that migrated from PIC16C7X or PIC12CXXX devices. The wide 2.0 V to 5.5 V VDD range and -40C to +125C operating temperature make the part suitable for both battery-powered consumer products and harsh industrial environments. When designing with the PIC16F877T-04E/PQ, note that the 4 MHz speed grade limits instruction execution throughput to 5 MIPS; for higher performance the 10 MHz (PIC16F877-10) and 20 MHz (PIC16F877-20) speed grades are drop-in replacements. Microchip recommends migrating to the PIC16F887 for new designs because the PIC16F877 family is in maintenance status, but the existing design ecosystem, MPLAB X IDE support, and abundant legacy code make the PIC16F877T-04E/PQ a strong fit for sustaining engineering and legacy board replacement.

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PIC16F877T-04E/PT - 8-bit 4MHz 14KB Flash MCU 44-TQFP | Microchip
PIC16F877T-04E/PT

PIC16F877T-04E/PT - 8-bit 4MHz 14KB Flash MCU 44-TQFP | Microchip

The Microchip Technology PIC16F877T-04E/PT is a CMOS Flash-based 8-bit PIC microcontroller from the PIC16F877 family, integrating 14KB of Flash program memory (8K x 14 words), 368 bytes of SRAM, and 256 bytes of EEPROM in a 44-pin TQFP (10x10 mm) package. It executes instructions in 200 ns at 4 MHz maximum clock and operates from a 5V supply across an extended industrial temperature range of -40 C to +125 C. The PIC16F877 series remains one of the most widely deployed mid-range 8-bit microcontrollers in industrial, consumer, and legacy automotive subsystems. What is an 8-bit microcontroller? An 8-bit MCU (microcontroller) is a single-chip computer that integrates a CPU, non-volatile program memory (Flash/ROM), volatile working memory (RAM), EEPROM, and a fixed set of peripherals (timers, ADC, USART, I2C/SPI, GPIO) on one die. The PIC16F877 sits in the mid-range PIC taxonomy (PIC10/12/14/16/18/24/32), positioned between baseline PIC12/16 and enhanced PIC18 cores. With its Harvard RISC architecture, 35 single-word instructions, and 14-bit instruction word, the PIC16F877 family delivers deterministic timing suitable for direct register-level control loops. Key features of the PIC16F877T-04E/PT include 8 channels of 10-bit analog-to-digital conversion (ADC), three timers (Timer0, Timer1, Timer2), a USART with synchronous/asynchronous modes, a Master Synchronous Serial Port (MSSP) supporting SPI and I2C (both Master and Slave), a capture/compare/PWM (CCP) module, and up to 33 digital I/O pins across five ports (PORTA through PORTE). The device supports in-circuit serial programming (ICSP) via two dedicated pins, enabling bootloader-free field firmware updates. The PIC16F877 architecture uses a 14-bit instruction word with a two-stage pipeline, a hardware multiplier (8x8), and a programmable code-protection scheme. Brown-out reset (BOR), power-on reset (POR), and a watchdog timer (WDT) with its own on-chip RC oscillator protect against code runaway and brown-out events. The Flash program memory supports 100,000 erase/write cycles typical and >40-year endurance, making the part suitable for long-life industrial equipment. Typical applications for the PIC16F877T-04E/PT include industrial automation controllers, sensor signal conditioning, motor control (low-side PWM), HVAC thermostats, smart metering, educational development boards, and legacy upgrade designs. The 'E' suffix denotes the Extended (industrial) temperature grade, and 'T' indicates Tape and Reel packaging, while the 'PT' suffix specifies the 44-pin TQFP (10x10 mm) form factor. When designing with this part, ensure that your linker file reserves the top of Flash for the ICSP/DEBUG vector (0x1F00 area on this family) and that your in-circuit programmer is configured for mid-range PIC16F parts, not PIC18F. Designers migrating to newer alternatives should consider the PIC16F887, which Microchip lists as a newer device with enhanced peripherals. This page synthesizes distributor pricing, drop-in alternatives within the same 44-pin TQFP footprint, and practical design notes not found in the manufacturer datasheet alone.

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

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

The Microchip Technology PIC16F877T-04I/L is an 8-bit CMOS flash-based microcontroller from the PIC16F family, operating at up to 4MHz with 14KB (8K x 14 words) of in-system programmable Flash program memory and 368 bytes of RAM, housed in a 44-pin PLCC package. The part is supplied in Tape and Reel packaging (the 'T' suffix) and is rated for the Industrial temperature range (-40C to +85C) as indicated by the 'I' designator. An 8-bit microcontroller (MCU) is a programmable digital integrated circuit that combines a CPU, memory, and peripherals on a single die. The PIC16F family uses Microchip's modified Harvard RISC architecture with 35 single-word instructions and a 14-bit instruction word, executing instructions in 200ns at 20MHz (or 1us at 4MHz for the -04 speed grade). 8-bit MCUs sit at the low-power, low-cost end of the embedded hierarchy: microcontroller -> embedded controller -> semiconductor -> integrated circuit. Key features include a 10-bit 8-channel Analog-to-Digital Converter (ADC), 256 bytes of EEPROM data memory, 33 digital I/O pins, three timers (Timer0, Timer1, Timer2), and serial peripherals including UART/USART, SPI, and I2C (MSSP module). The device supports in-circuit serial programming (ICSP) via two pins, enabling field firmware updates without removing the part from the board. The PIC16F877 architecture uses a 14-bit program word with separate program and data buses, allowing instruction fetch and data access in a single cycle. Its 8-level hardware stack, 25-pin-peripheral architecture, and CCP/ECCP modules (Capture/Compare/PWM) make it suitable for motor-control and timing-sensitive applications. Brown-out Reset (BOR), Power-on Reset (POR), and Watchdog Timer (WDT) provide robustness in industrial environments. Typical applications include industrial automation controllers, sensor signal conditioning, low-power data loggers, HVAC control boards, and educational development platforms. The wide peripheral set and 4MHz operation are sufficient for slow-loop control and human-machine-interface (HMI) tasks. When designing with this MCU, note that Microchip now recommends the PIC16F887 as the newer replacement device. Engineers migrating from PIC16F877 to PIC16F887 gain an internal oscillator, more ADC channels, and nanoWatt power management while retaining pin-out compatibility in many packages. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes that complement - but do not replace - the manufacturer datasheet for the PIC16F877T-04I/L.

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PIC16F877T-04I/PQ - 8-Bit MCU 14KB FLASH 44-MQFP | Microchip
PIC16F877T-04I/PQ

PIC16F877T-04I/PQ - 8-Bit MCU 14KB FLASH 44-MQFP | Microchip

The Microchip Technology PIC16F877T-04I/PQ is an 8-bit CMOS FLASH-based PIC microcontroller operating at 4MHz, integrating 14KB (8K x 14 words) of program FLASH memory, 368 bytes of SRAM, and 256 bytes of EEPROM data memory in a 44-pin MQFP (10x10 mm) package. It is the tape-and-reel, industrial-temperature variant of the PIC16F877 family, offering 33 digital I/O pins and a 200 ns instruction execution time across 35 single-word instructions. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory (FLASH/ROM), data memory (RAM), non-volatile data storage (EEPROM), and a set of peripherals onto one silicon die. PIC microcontrollers use a RISC Harvard architecture that separates program and data buses, allowing instruction fetch and operand access to occur in the same cycle. Within the broader taxonomy, the PIC16F877 belongs to the PIC16 mid-range family -> 8-bit MCU -> microcontroller -> embedded processor -> semiconductor IC. The 04 speed grade indicates a 4MHz maximum oscillator input. Key features include 14KB self-programmable FLASH, 256 bytes of true EEPROM for data logging, an 8-channel 10-bit ADC, two 8-bit timers plus one 16-bit timer, a synchronous/asynchronous USART, an MSSP module supporting both SPI and I2C, and a capture/compare/PWM (CCP) module. Industrial temperature range of -40C to +85C and brown-out detection support robust embedded designs. The 44-MQFP (Metric Quad Flat Pack) provides a 0.80 mm pitch and 10x10 mm body. Architecturally the PIC16F877 uses a 14-bit instruction word with an 8-bit data path, an 8-level hardware stack, and direct, indirect, and relative addressing modes. The integrated enhanced FLASH cell supports >100K erase/write cycles and >40-year data retention, while the EEPROM supports >1M erase/write cycles. Two capture inputs and a PWM output (10-bit resolution) are accessible via the CCP module. Typical applications include industrial control panels, HVAC sensor nodes, motor control, smart instrumentation, automotive body electronics, and educational embedded platforms where PIC development tools are prevalent. The 44-MQFP variant suits legacy through-hole-friendly layouts and is widely supported by Microchip's MPLAB X IDE and PICkit debug programmers. The newer PIC16F887 family member is recommended for new designs. A critical design consideration is that the -04 speed grade limits operation to 4MHz at the rated Vdd; for designs requiring higher throughput at lower Vdd, the PIC16F877-20 variant (20MHz) should be selected instead. The -I suffix indicates industrial temperature range (-40C to +85C). This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found on a standalone manufacturer datasheet.

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PIC16F877T-04I/PT - 8-bit 4MHz MCU 14KB Flash 44-TQFP | Microchip
PIC16F877T-04I/PT

PIC16F877T-04I/PT - 8-bit 4MHz MCU 14KB Flash 44-TQFP | Microchip

The Microchip PIC16F877T-04I/PT is an 8-bit CMOS FLASH-based PIC16F family microcontroller operating at 4MHz, integrating 14KB (8K x 14) of FLASH program memory and 368 bytes of RAM in a 44-pin TQFP (10x10 mm) package. It delivers 200 ns instruction execution with only 35 single-word instructions and provides 33 digital I/O pins, supporting 5V operation and industrial temperature range -40C to +85C. The T-suffix denotes tape-and-reel packaging, while the /PT suffix indicates the TQFP package. A microcontroller (MCU) is a single-chip computer containing a CPU core, program memory (FLASH/ROM), data memory (RAM), and integrated peripherals such as timers, ADC, communication interfaces, and I/O ports. Within the system hierarchy, an MCU belongs to the embedded controller category, sitting above simple logic ICs and below microprocessor-based systems in functional complexity. PIC16F-series microcontrollers specifically target cost-sensitive 8-bit applications where deterministic instruction execution and low power are valued over raw processing speed. Key features of the PIC16F877T-04I/PT include a Harvard RISC architecture with 14-bit instructions, integrated 10-bit ADC with up to 8 channels, two 8-bit and one 16-bit timer/counter, USART for serial communication, MSSP module supporting SPI and I2C, and 256 bytes of EEPROM data memory. The wide operating voltage range of 2.0V to 5.5V supports both 3.3V and 5V designs. Architecturally, the PIC16F877 uses a 14-bit instruction word with an 8-bit data path, providing byte-oriented operations while keeping instruction memory efficient. The 4MHz oscillator combined with the 4-instruction-cycle pipeline yields the 1 MIPS throughput characteristic of this family. Typical applications include industrial control systems, sensor interfacing, motor control, low-cost instrumentation, and consumer electronics. The 33 I/O pins comfortably drive displays, keypads, and actuator relays without external glue logic. When designing with this part, ensure decoupling capacitors are placed within 5mm of the VDD pins and follow Microchip's recommended PCB layout guidelines for oscillator stability. In-system programming (ICSP) requires dedicated RB6/RB7 pins, which must not be permanently tied low in the application circuit. This page synthesizes distributor pricing, same-brand and cross-brand drop-in alternatives, and practical design notes not found in the manufacturer datasheet, giving engineers a single decision-ready reference.

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PIC16F877T-10E/L - 8-Bit 10MHz PIC MCU, 14KB Flash, 44-PLCC | Microchip
PIC16F877T-10E/L

PIC16F877T-10E/L - 8-Bit 10MHz PIC MCU, 14KB Flash, 44-PLCC | Microchip

The Microchip Technology PIC16F877T-10E/L is a high-performance 8-bit CMOS Flash-based RISC microcontroller featuring 14KB (8K x 14 words) of program memory, 368 bytes of RAM, and 256 bytes of EEPROM, packaged in a 44-pin Plastic Leaded Chip Carrier (PLCC / L) for surface-mount applications. Operating at up to 10MHz with a 200ns instruction execution time, it executes the PIC16 instruction set comprising only 35 single-word instructions, while supporting an operating voltage range of 4.0V to 5.5V across the industrial grade (E) temperature window. A microcontroller (MCU) is an integrated circuit that combines a CPU, program memory (Flash/ROM), data memory (RAM), and a rich set of programmable peripherals (timers, ADC, communications, I/O) into a single device. Within the broader taxonomy of semiconductors, MCUs belong to the digital IC category alongside microprocessors, DSPs, FPGAs, and memory ICs. The PIC16F877 specifically sits in the mid-range 8-bit PIC family (PIC16F), which bridges the cost-optimized baseline PIC12/PIC14 families and the higher-end PIC18 family, and is widely used in embedded control, industrial automation, and automotive subsystems. Key features include 33 digital I/O pins arranged across multiple ports, a 10-bit 8-channel Analog-to-Digital Converter (ADC), two 8-bit and one 16-bit Capture/Compare/PWM (CCP) modules, an enhanced USART for serial communications, an MSSP module supporting SPI and I2C, and a 14-bit instruction word architecture with 8-level hardware stack for fast context switching. The device also supports in-circuit serial programming (ICSP) via two pins, allowing firmware updates after PCB assembly without removing the MCU. Typical applications include industrial process control nodes, HVAC controllers, automotive body and chassis subsystems (with the -E industrial grade; the automotive-grade variant is the PIC16F877T-10I/L or the PIC16F877A family), uninterruptible power supply (UPS) monitoring boards, smart sensor hubs, and general-purpose embedded control platforms where moderate computation, robust peripheral integration, and proven long-term Microchip supply continuity are critical. The T-suffix indicates Tape-and-Reel packaging for high-volume SMT assembly lines, while the L-designator confirms the 44-pin PLCC (J-lead) form factor used by Microchip for legacy through-hole-style surface-mount designs. When designing with this device, ensure that the in-circuit debugger (ICD) and ICSP programming header are reserved on the PCB to allow field firmware updates. Migration to the newer PIC16F887 is recommended for new designs because the PIC16F877 family is officially recommended for existing projects only. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical PLCC-layout design notes not found in the standalone manufacturer datasheet, providing engineers with the consolidated engineering and sourcing view needed to qualify the part for production.

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PIC16F877T-10E/PQ - 8-Bit 10MHz 14KB Flash MCU, 44-MQFP | Microchip
PIC16F877T-10E/PQ

PIC16F877T-10E/PQ - 8-Bit 10MHz 14KB Flash MCU, 44-MQFP | Microchip

The Microchip Technology PIC16F877T-10E/PQ is an 8-bit RISC flash microcontroller from the PIC16F family, operating at 10MHz with 14KB (8K x 14) of FLASH program memory, 368 bytes of RAM, and 256 bytes of EEPROM, housed in a 44-pin Metric QFP (MQFP) package measuring 10mm x 10mm. The 'T' suffix denotes Tape & Reel packaging, '10' indicates 10MHz maximum clock, and 'E' marks the Enhanced (-40C to +125C) industrial temperature grade. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program and data memory, peripheral interfaces, and I/O pins on one die. Within the broader semiconductor taxonomy, the PIC16F877 belongs to the 8-bit MCU class, then to the PIC16 mid-range family, then to Microchip's PIC architecture, and finally to embedded computing ICs. This hierarchy matters for cross-referencing: any drop-in alternative must match the 8-bit core, the PIC16 instruction set, the 14KB flash, and the 44-pin MQFP footprint. Key features include 33 programmable digital I/O pins, a 10-bit ADC with up to 8 channels, USART, MSSP (SPI/I2C), two 8-bit timers and one 16-bit timer, a 10MHz internal oscillator option, and an instruction execution time of 200ns at 20MHz (or 400ns at 10MHz). The device supports in-circuit serial programming (ICSP) and in-circuit debugging (ICD), enabling firmware updates and real-time emulation through just two pins. Architecturally, the PIC16F877 uses a Harvard RISC architecture with separate program and data buses, a 14-bit wide instruction word, and a hardware multiplier-free ALU that delivers predictable 200ns instruction cycles. The CMOS flash process enables low-power operation and 100K erase/write cycle endurance on the program memory. Typical applications include industrial control systems, sensor interface modules, low-cost embedded controllers, motor control front-ends, and educational/hobbyist platforms. The wide temperature range makes it suitable for automotive underhood and factory-floor environments when paired with appropriate derating. When designing with this part, ensure the 44-pin MQFP land pattern matches the chosen footprint, allocate decoupling capacitors within 5mm of VDD/VSS pins, and consider the PIC16F887 as a pin-compatible successor with more memory and peripherals when migrating new designs. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not found in the standalone datasheet PDF.

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PIC16F877T-10E/PT - 10MHz 8-Bit Flash MCU | Microchip
PIC16F877T-10E/PT

PIC16F877T-10E/PT - 10MHz 8-Bit Flash MCU | Microchip

Microchip Technology PIC16F877T-10E/PT is an 8-bit CMOS Flash microcontroller with a 10 MHz maximum clock, 14 KB of Flash program memory organized as 8K x 14 words, 368 bytes of RAM, and a 44-TQFP surface-mount package measuring 10 x 10 mm. The device includes an 8 x 10-bit analog-to-digital converter, 33 I/O pins, and I2C, SPI, and UART/USART interfaces for embedded control and communication. A microcontroller is a programmable semiconductor that integrates a CPU core, memory, peripherals, and I/O in one package. The PIC16F877 belongs to the PIC16 8-bit family and implements Microchip's PIC architecture with 35 single-word instructions and 200 ns instruction execution. This hierarchy places it below flash-based MCU, embedded controller, and semiconductor categories. Key device characteristics include 10 MHz operation, 14 KB of Flash memory, 368 bytes of data RAM, 33 I/O pins, and an integrated 10-bit ADC. The T suffix identifies the surface-mount package configuration, while the -10E speed and temperature grade corresponds to 10 MHz operation. Its broad peripheral mix supports designs requiring simultaneous digital control, analog measurement, and serial communication. The PIC16F877 architecture combines flash-resident program storage with dedicated peripherals for communication and analog measurement. The 8 x 10-bit ADC provides eight analog input channels, while the listed I2C, SPI, and UART/USART interfaces allow the MCU to connect sensors, transceivers, memories, and host systems. Upward compatibility with earlier PIC16C5X, PIC12CXXX, and PIC16C7X devices is identified on the manufacturer product page. Typical uses include industrial controllers, instrumentation, communication equipment, data acquisition modules, and embedded automation systems. Its 33 I/O pins can support digital inputs, outputs, and peripheral signals, while the ADC permits direct connection of analog sensors. Serial interfaces reduce external component requirements in designs using compatible sensors, displays, or communication transceivers. Designers should verify the complete 44-pin assignment, peripheral multiplexing, oscillator configuration, and programming interface against the manufacturer datasheet before PCB release. Software should also be validated at the maximum intended clock and across the required environmental range. The manufacturer identifies PIC16F887 as a newer device to consider for new designs. This page consolidates verified distributor specifications, lifecycle information, practical application guidance, and same-family replacement considerations. It also distinguishes genuine package-compatible options from broader functional alternatives and highlights where firmware, pin multiplexing, and qualification checks remain necessary.

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PIC16F877T-20/L - 8-bit 20MHz 14KB Flash MCU 44-PLCC | Microchip
PIC16F877T-20/L

PIC16F877T-20/L - 8-bit 20MHz 14KB Flash MCU 44-PLCC | Microchip

The Microchip PIC16F877T-20/L is an 8-bit RISC microcontroller featuring the PIC16 CPU core with 14KB (8K x 14 words) of FLASH program memory, 368 bytes of data RAM, and 256 bytes of data EEPROM, packaged in a 44-pin PLCC (16.59x16.59 mm) and supplied on tape-and-reel. It executes 35 single-word instructions in as little as 200 nanoseconds at 20MHz, providing Microchip's classic mid-range PIC architecture with industry-standard peripheral integration. A microcontroller (MCU) is a single-chip computer that integrates a CPU, memory (FLASH for program, SRAM for data, EEPROM for non-volatile storage), and peripherals (timers, ADC, communications, I/O) onto one silicon die. Within the broader taxonomy, the PIC16F877 belongs to the 8-bit microcontroller class, which sits inside the microcontroller family, which in turn is a subset of embedded computing semiconductors. The 8-bit class remains widely deployed where deterministic instruction timing, low cost, and simple toolchain (assembly or C with the MPLAB XC8 compiler) outweigh raw throughput. Key specifications: 20MHz maximum clock, 5V typical operating voltage (range typically 2.0V-5.5V), 33 digital I/O pins, 8-channel 10-bit ADC, USART, MSSP (SPI/I2C), two CCP modules, and a watchdog timer. The 14KB FLASH holds roughly 8K instructions, generous for state machines, sensor aggregation, and human-machine-interface (HMI) controllers. The architecture is built on Harvard memory organization with separate program and data buses, an instruction pipeline, and a 14-bit program word. Brown-out Reset (BOR), Power-on Reset (POR), and the watchdog timer combine to deliver robust in-field recovery without external supervisors. The MSSP peripheral supports both SPI master/slave and I2C master/slave, simplifying bus integration with EEPROMs, sensors, and displays. Typical applications include industrial sensor interfaces, HVAC controllers, automotive body electronics (where the I-grade variant applies), consumer appliance controls, low-cost data acquisition, and educational/hobbyist development. The 8-channel ADC and 33 I/O make it a natural fit for instrumentation front-ends with keypad/LCD user interfaces. A core design consideration is selecting the oscillator mode: crystal/ceramic resonator for timing-critical designs or internal RC mode to save board space. In-system programming (ICSP) via RB6/RB7 pins allows firmware updates without removing the device, but those pins must not be repurposed as outputs during programming. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes derived from cross-reference tooling not consolidated in any single source.

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PIC16F877T-20/PQ - 8-bit MCU 14KB Flash 20MHz 44-MQFP | Microchip
PIC16F877T-20/PQ

PIC16F877T-20/PQ - 8-bit MCU 14KB Flash 20MHz 44-MQFP | Microchip

The Microchip Technology PIC16F877T-20/PQ is a CMOS FLASH-based 8-bit microcontroller from the PIC® 16F family, providing 14KB (8K x 14) of on-chip FLASH program memory, 368 bytes of data RAM, and 256 bytes of EEPROM, housed in a 44-pin MQFP (PQ) package rated for 20MHz operation. The PIC16F877T-20/PQ operates from 4.0V to 5.5V and executes instructions in a 200ns single-cycle pipeline, supporting 33 digital I/O pins, an integrated 10-bit ADC, two USART modules, MSSP (SPI/I2C), two 8-bit and one 16-bit timer, and a parallel slave port. An 8-bit microcontroller (MCU) is a single-chip processor that integrates a CPU, memory, and peripherals on one piece of silicon. PIC microcontrollers use a RISC architecture with only 35 single-word instructions, balancing code efficiency with deterministic timing. Within the broader MCU taxonomy, 8-bit PIC MCUs sit beneath 16-bit PIC24/dsPIC and 32-bit PIC32 families, and are part of the wider embedded microcontroller category that includes AVR, 8051, MSP430, and Cortex-M0 devices. The PIC16F877 family targets peripheral-rich industrial and consumer applications where deterministic I/O handling and low cost matter more than raw CPU throughput. Key features of the PIC16F877T-20/PQ include in-circuit serial programming (ICSP) via two pins, a watchdog timer with on-chip RC oscillator, power-on reset, brown-out detection, and a code-protection bit pattern to lock FLASH contents. Compared with newer PIC16F877A silicon, the original PIC16F877 lacks the extended instruction set and improved ADC performance; Microchip officially recommends migrating to the PIC16F887 for new designs. The RISC-style architecture, 14-bit wide instruction word, and Harvard bus structure allow deterministic, mostly single-cycle execution. With 20MHz oscillator input, the instruction cycle is 200ns, providing 5 MIPS peak throughput - sufficient for control loops, sensor polling, and slow serial communication. The 256-byte EEPROM supports 1M erase/write cycles, and FLASH endures 100K write cycles per cell, making the device suitable for parameter storage and field updates via bootloader or ICSP. Typical applications include industrial control panels, HVAC fan controllers, instrumentation front-ends, security alarm panels, and legacy serial-bus sensor nodes where the 44-MQFP footprint is retained for retrofit boards. Designers also use it for educational platforms and rapid prototyping given the long-standing availability of compilers, debuggers, and reference designs. When designing with the PIC16F877T-20/PQ, ensure the 5V rail is regulated and decoupling is placed at every VDD pin pair. Note that Microchip has migrated most PIC16F877 family devices to the PIC16F877A-A version for new designs; confirm the errata list before finalizing firmware because older silicon may exhibit ADC and LVD behavior differences. This page combines manufacturer datasheet figures, distributor pricing tiers, and parametric drop-in alternatives curated for the PIC16F877 family, providing a single reference for sourcing and BOM decisions.

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PIC16F877T-20/PT - 8-bit 20MHz MCU, 14KB Flash, TQFP-44 | Microchip
PIC16F877T-20/PT

PIC16F877T-20/PT - 8-bit 20MHz MCU, 14KB Flash, TQFP-44 | Microchip

The Microchip Technology PIC16F877T-20/PT is an 8-bit PIC® RISC microcontroller with 14KB Flash program memory, 368 bytes of RAM, and 256 bytes of EEPROM, housed in a 44-pin TQFP package and operating at up to 20MHz clock speed. Built around Microchip's mid-range PIC16 architecture, it delivers 200 ns instruction execution with only 35 single-word instructions, making firmware development fast and code density high. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory (Flash/ROM), data memory (RAM), and peripherals such as timers, ADCs, and communication ports onto one die. Within the embedded hierarchy, an MCU sits below microprocessors (MPUs) in complexity but above discrete logic in capability. The PIC® 16F family uses a Harvard RISC core that fetches instructions and data on separate buses, allowing most instructions to complete in one instruction cycle - the foundation of its compact, deterministic performance. Key features of the PIC16F877T-20/PT include 33 digital I/O pins, a 10-bit ADC with up to 8 channels, two 8-bit and one 16-bit timers, and three serial communication modules (USART, MSSP/SPI/I2C). The 'T' suffix indicates tape-and-reel packaging for high-volume assembly, while the '20' speed grade specifies a 20MHz maximum oscillator frequency. Internal brown-out reset, watchdog timer, and in-circuit serial programming (ICSP) are built in. This combination of analog-rich peripherals, ample program memory, and a compact TQFP-44 footprint makes the PIC16F877T-20/PT a workhorse for industrial control, sensor conditioning, motor control, and human-machine interface designs. It remains widely deployed in mature products where firmware portability and long-term Microchip supply guarantees are priorities. Typical applications span factory automation boards, HVAC controllers, security panels, instrumentation, and consumer appliance mainboards. Designers value the PIC16F877's deterministic interrupt latency and the mature MPLAB XC8 toolchain for rapid prototyping and long-term maintenance. When designing with this MCU, ensure your 5V supply rail stays within the 2.0-5.5V VDD range, and budget for the in-circuit programming header on production boards for firmware updates. Decouple VDD with 100nF + 10uF bulk caps close to the pins. This page synthesizes distributor pricing, drop-in same-brand and cross-brand alternatives, and practical PCB design notes that complement the manufacturer datasheet with information-gain content not found on distributor product pages.

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PIC16F877T-20I/L - 8-Bit 20MHz 14KB Flash MCU | Microchip
PIC16F877T-20I/L

PIC16F877T-20I/L - 8-Bit 20MHz 14KB Flash MCU | Microchip

The Microchip Technology PIC16F877T-20I/L is an 8-bit RISC Flash microcontroller based on the PIC16 architecture, operating at up to 20 MHz with 14 KB (8K x 14 words) of on-chip program Flash memory and 368 bytes of RAM, housed in a 44-pin PLCC (J-lead, 16.59 x 16.59 mm) package with industrial-grade -40C to +85C temperature rating. What is a PIC16F microcontroller? The PIC16F family is a category of 8-bit Harvard-architecture RISC microcontrollers from Microchip Technology, belonging to the broader class of microcontrollers (MCU) within embedded systems semiconductors. These devices integrate CPU core, Flash program memory, RAM, EEPROM, and peripherals (ADC, USART, I2C/SPI, timers, PWM, capture/compare) on a single die, executing one instruction per 200 ns cycle at 20 MHz. They sit in the system hierarchy above discrete logic and below 32-bit Cortex-M MCUs, optimized for cost-sensitive deterministic control. The PIC16F877T-20I/L delivers 33 digital I/O lines, a 10-bit 8-channel ADC, two 8-bit and one 16-bit timer, MSSP (SPI/I2C), USART, and 256 bytes of EEPROM data memory. The "T" suffix denotes tape-and-reel packaging and the "I" indicates the industrial temperature grade; the "20" specifies the 20 MHz maximum clock. Architecturally the device uses a 14-bit instruction word, 8-bit data path, separate program and data buses (Harvard), and a hardware stack with 8 levels. The Flash memory supports 100,000 erase/write cycles typical and 40-year data retention per the Microchip datasheet family, while in-circuit serial programming (ICSP) allows field updates via two pins. Typical applications include industrial process control, HVAC and building automation, automotive body electronics (non-safety), instrumentation front-ends, and legacy embedded product replacements. The wide peripheral set also suits sensor hub nodes, motor control loops, and human-machine interface (HMI) controllers using character LCDs. A key design consideration is the obsolete status note from Microchip (recommends PIC16F887 for new designs), but the 44-pin PLCC remains drop-in compatible with the successor family for many footprints. Designers should verify the ICD/debug header compatibility and use MPLAB X IDE with a PICkit or ICD programmer during development. This page synthesizes distributor pricing, drop-in 44-PLCC alternatives, datasheet pinout, and practical design notes that go beyond the manufacturer datasheet alone.

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PIC16F877T-20I/PQ - 20MHz 8-Bit MCU | Microchip
PIC16F877T-20I/PQ

PIC16F877T-20I/PQ - 20MHz 8-Bit MCU | Microchip

The Microchip Technology PIC16F877T-20I/PQ is an 8-bit CMOS flash microcontroller with 14KB of program Flash, 368 bytes of RAM, 33 I/O pins, and a 20MHz maximum clock speed, housed in a 44-pin MQFP package. It combines the PIC16 RISC instruction set with integrated peripherals for embedded control and supports operation from -40°C to +85°C in the industrial-grade ordering code. An 8-bit microcontroller is a programmable semiconductor that integrates a CPU core, program memory, data memory, I/O ports, timers, and communication peripherals on one device. The PIC16F877 family belongs to the mid-range PIC16 product hierarchy, where the flash-based architecture supports in-circuit reprogramming and a compact instruction set suited to industrial controllers, instruments, appliances, and legacy embedded platforms. Key features include 14KB Flash memory, 368 bytes of RAM, 33 digital I/O lines, and a 20MHz operating speed. According to the Microchip PIC16F877 product-page snippet, the device provides 200ns instruction execution and uses only 35 single-word instructions. These characteristics make the PIC16F877T-20I/PQ appropriate for designs requiring deterministic control, compact firmware, and a broad collection of on-chip peripherals. The PIC16 architecture uses separate program and data memory spaces and is upward compatible with earlier PIC16C5X, PIC12CXXX, and PIC16C7X devices, as stated on the Microchip product page. Its 44-pin MQFP provides a higher I/O count than 40-pin DIP variants, while the 20MHz speed rating supports more demanding timer, serial-interface, and control-loop workloads than 4MHz implementations. Typical applications include industrial monitoring equipment, temperature controllers, motor and relay controllers, data-acquisition front ends, instrumentation, and general-purpose embedded control. The same 44-pin package is also used by newer PIC16F887 devices, which Microchip identifies as a newer device for the PIC16F877 family and which are discussed as having the same pinout in replacement guidance. Designers should verify the exact pin assignment, oscillator configuration, programming interface, and peripheral availability against the manufacturer datasheet before a hardware revision. The -40°C to +85°C industrial temperature range supports deployed equipment, but electromagnetic robustness, watchdog strategy, brownout behavior, and communication timing must still be validated for the end application. This product page combines the verified device specifications, lifecycle information, observed distributor pricing, pin-compatible replacement candidates, and application guidance to provide practical information beyond a basic manufacturer ordering-table entry. Alternative listings remain subject to firmware, peripheral, and qualification review.

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PIC16F877T-20I/PT - 20MHz 8-Bit MCU | Microchip Technology
PIC16F877T-20I/PT

PIC16F877T-20I/PT - 20MHz 8-Bit MCU | Microchip Technology

The Microchip Technology PIC16F877T-20I/PT is an 8-bit CMOS Flash-based PIC microcontroller operating at up to 20 MHz, with 14 KB (8K x 14 words) of program Flash, 368 bytes of RAM, and 33 I/O pins, housed in a 44-pin TQFP (10 x 10 mm) package. It combines a RISC-based PIC architecture, 200 ns instruction execution, and a 35-instruction instruction set in a compact surface-mount microcontroller. An 8-bit microcontroller is a programmable semiconductor integrated circuit that executes embedded-control instructions using an 8-bit data path. Within the product hierarchy, the PIC16F877 belongs to Microchip’s mid-range PIC16 family, combining general-purpose digital control, Flash program memory, data RAM, and dedicated communication peripherals in one device. The PIC16F877T-20I/PT is therefore more capable than simple 8-bit logic controllers while remaining simpler than many 16- and 32-bit processors. Key features include 14 KB of Flash program memory, 368 bytes of RAM, 33 I/O pins, and a maximum clock frequency of 20 MHz. Its industrial-temperature designation identifies it for extended-temperature equipment, while the -20 suffix specifies the 20 MHz performance grade. According to the manufacturer product page, the core uses a powerful RISC-based PIC architecture with 35 single-word instructions and 200 ns instruction execution, supporting efficient control loops, timing, and serial-interface handling. The integrated feature set supports embedded designs that require multiple I/O lines, asynchronous and synchronous serial communication, timers, interrupts, and programmable digital interfaces. A 44-pin TQFP provides substantially more I/O connectivity than smaller 28-pin and 40-pin microcontroller packages, making the device suitable for controller boards where external logic, sensors, relays, communication transceivers, and human-interface circuitry must connect to one controller. Typical applications include industrial monitoring and control, communication equipment, data acquisition, motor and relay control, instrumentation, and embedded products requiring an extended-temperature 8-bit MCU. The 20 MHz operating speed provides additional timing margin for interrupt-driven control, while 33 I/O pins reduce the need for external I/O expanders. The 14 KB Flash area also allows meaningful embedded code, bootloader logic, and configuration storage within a single device. Designers should verify the exact peripheral mapping, electrical limits, programming requirements, and timing constraints against the manufacturer datasheet before layout release. A 44-pin TQFP footprint requires adequate copper area and careful fan-out for signal integrity and assembly. The industrial grade should be confirmed for every unverified operating-temperature requirement, and firmware should be validated for all interrupt priorities, peripheral interactions, and communication rates. This product data consolidates the verified manufacturer and distributor information, distinguishes package and temperature variants, and identifies where drop-in alternatives require careful compatibility review. It also adds practical comparison and selection guidance that is not normally presented together on a distributor listing, helping engineers assess procurement, PCB reuse, and firmware compatibility more efficiently.

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PIC16F87T-E/ML - 8-bit PIC MCU 20MHz 7KB Flash | Microchip
PIC16F87T-E/ML

PIC16F87T-E/ML - 8-bit PIC MCU 20MHz 7KB Flash | Microchip

The Microchip Technology PIC16F87T-E/ML is an 8-bit PIC RISC flash microcontroller (MCU) operating at up to 20 MHz with 200 ns instruction execution, integrating 7 KB (4K x 14 words) of enhanced flash program memory and packaged in a 28-pin QFN with exposed thermal pad (6 x 6 mm) supplied on tape and reel. It is part of the PIC16F87/88 family of 18/20/28-pin Enhanced Flash Microcontrollers with NanoWatt Technology, the same die as the non-'T' PIC16F87-I/ML but specified for the extended -40C to +125C industrial temperature range and supplied in the small-outline QFN-28 footprint. A microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory, RAM, EEPROM, timers, serial peripherals, and digital I/O on one die. The PIC architecture uses a RISC (Reduced Instruction Set Computer) Harvard-style design where program and data buses are separate, allowing simultaneous instruction fetch and data access. Within Microchip's portfolio, PIC16 sits between PIC10/12/14 (lower pin count) and PIC18 (higher performance, 16-bit wide instructions), targeting battery-powered and cost-sensitive embedded applications through low-power NanoWatt sleep modes. Key features include 35 single-word instructions that simplify coding, hardware USART, MSSP for SPI/I2C, capture/compare/PWM modules, 256 bytes of EEPROM, two 8-bit timers plus one 16-bit timer, a 10-bit multi-channel ADC, nano-power sleep current, and an internal oscillator option that eliminates the external crystal in many designs. The 28-QFN exposed pad lowers thermal resistance and enables compact board layouts for sensor hubs, white-goods controls, and handheld instruments. Typical applications include consumer white goods, low-end remote controls, sensor signal conditioning, battery-powered instrumentation, and small industrial control nodes where deterministic real-time response and low sleep current matter more than raw CPU throughput. When designing with this part, prioritize single-rail 5 V supplies with decoupling capacitors of at least 0.1uF adjacent to every VDD pin. For in-circuit serial programming (ICSP) leave the ICSP pins accessible; leaving MCLR unbonded is a common PCB layout mistake that blocks in-field firmware updates. This page consolidates distributor pricing, drop-in VQFN-28 alternatives, and practical design notes not found in the manufacturer datasheet.

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PIC16F87T-E/SO - 8-bit MCU, 20MHz, 4KB Flash, 18-SOIC | Microchip
PIC16F87T-E/SO

PIC16F87T-E/SO - 8-bit MCU, 20MHz, 4KB Flash, 18-SOIC | Microchip

The Microchip Technology PIC16F87T-E/SO is an 8-bit CMOS Flash-based enhanced microcontroller from the PIC16F87 family, operating at up to 20 MHz with 200 ns instruction cycle time and 35 single-word instructions in a 18-pin SOIC wide-body package. It integrates 7 KB (4K x 14) of Flash program memory, 368 bytes of RAM, and 256 bytes of EEPROM data memory, providing ample space for embedded control code in compact, cost-sensitive designs. An 8-bit microcontroller (MCU) is a single-chip computer with an 8-bit data bus, integrating CPU, memory (Flash/ROM, RAM, EEPROM), and peripherals into one IC. Within the broader semiconductor hierarchy, it belongs to the microcontroller -> embedded controller -> digital IC -> integrated circuit family. Microchip's PIC16 mid-range architecture is one of the industry-standard 8-bit RISC cores, designed for deterministic real-time control in consumer, industrial, and automotive applications. Key features include 16 digital I/O pins, an operating voltage range of 4.0 V to 5.5 V, on-chip peripherals such as a 10-bit ADC, two 8-bit timers, one 16-bit timer with capture/compare/PWM, enhanced PWM module, USART, I2C/SPI, and NanoWatt power management for low-power sleep modes. Brown-out Reset, Power-on Reset, and Watchdog Timer provide robust field reliability. The device uses Microchip's enhanced mid-range Harvard architecture with a 14-bit instruction word and 8-bit data path, executed through a pipelined RISC engine. The "T" suffix denotes Tape & Reel packaging for high-volume assembly; the "-E" denotes the Extended (industrial) temperature grade of -40 °C to +125 °C, while the "SO" suffix indicates the 18-pin SOIC 300-mil package. Typical applications include sensor signal conditioning, HVAC damper/valve control, small appliance motor control, battery chargers, security alarm panels, and industrial control modules. The combination of low power, deterministic interrupt latency, and ample analog/digital peripherals makes it well suited for replacing discrete logic in space-constrained designs. When designing with this MCU, ensure the ICSP clock/clock-out pins are reserved for in-circuit programming unless a separate programming header is provided, and place a 100 nF decoupling capacitor close to VDD with a bulk 10 µF on the board supply rail. This page synthesizes distributor pricing from Mouser and Octopart, drop-in same-package alternatives from the PIC16F87 family, and practical design notes not found in the manufacturer datasheet alone.

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