Mikrocontroller

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PIC16F873AT-I/SS - 8-Bit 20MHz MCU 7KB Flash 28-SSOP | Microchip
PIC16F873AT-I/SS

PIC16F873AT-I/SS - 8-Bit 20MHz MCU 7KB Flash 28-SSOP | Microchip

The Microchip Technology PIC16F873AT-I/SS is an 8-bit CMOS Flash-based microcontroller in the PIC16F mid-range family, delivering 20MHz (200ns instruction cycle) performance with 7KB (4K x 14) of Flash program memory, packaged in a 28-pin SSOP. It operates across 4.0V to 5.5V, features 192 bytes of RAM and 128 bytes of EEPROM, and provides 22 digital I/O pins. An 8-bit microcontroller (MCU) is a single-chip computer with an 8-bit data path, typically integrating a CPU core, Flash program memory, SRAM, EEPROM, timers, ADC, communication peripherals (USART, SPI, I2C), and general-purpose I/O into one IC. PIC16F series microcontrollers sit in the PIC16 mid-range architecture hierarchy (PIC10/12/16/18/24/32), specifically targeting 18–28 pin applications that require low-power operation, deterministic interrupt handling, and small-form-factor packaging for embedded control. Key features of the PIC16F873AT-I/SS include nanoWatt Technology for active and sleep current management, an ICD (In-Circuit Debugger) interface, two analog comparators, a 10-bit multi-channel ADC, one 8-bit and two 16-bit timers, an MSSP module supporting SPI and I2C, a USART with 9-bit address detection, and self-programming support. These features enable single-chip implementation of sensor conditioning, motor control loops, and human-interface panels. The PIC16F873AT-I/SS uses a 14-bit wide instruction word RISC core with 35 single-word instructions, making firmware development straightforward. Its Harvard architecture provides separate program and data buses, allowing instruction fetch and data access to occur in the same cycle, yielding deterministic throughput critical for real-time control. Typical applications include industrial sensor interfaces, HVAC control modules, automotive body controllers, low-cost consumer appliances, battery management units, and embedded data-acquisition front-ends. The device's broad peripheral set also makes it a drop-in fit for replacing older PIC16C5X/C7X and PIC12CXXX designs. When designing with this MCU, ensure the 28-SSOP land pattern matches standard JEDEC MO-150 footprints. The 'A' suffix denotes a revision-2 silicon variant (PIC16F873A) with an enhanced instruction set; the 'T' suffix denotes Tape-and-Reel packaging. For new designs, Microchip recommends the PIC16F18854 as the newer migration target. This page synthesizes distributor pricing, drop-in alternatives from the same SSOP-28 footprint, and practical design notes not found in the standalone manufacturer datasheet.

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PIC16F873T-04E/SO - 8-Bit 4MHz PIC MCU 7KB Flash 28-SOIC | Microchip
PIC16F873T-04E/SO

PIC16F873T-04E/SO - 8-Bit 4MHz PIC MCU 7KB Flash 28-SOIC | Microchip

The Microchip Technology PIC16F873T-04E/SO is a CMOS Flash-based 8-bit microcontroller from the PIC16F87x family, executing one instruction per 200 ns instruction cycle at 4 MHz oscillator frequency. It integrates 7 KB (4K x 14) of Flash program memory, 192 bytes of RAM, and 128 bytes of EEPROM data memory, packaged in a 28-pin SOIC (SO) wide-body 7.50 mm option and supplied on Tape and Reel. The device is rated for the extended industrial -40C to +125C operating temperature range (the "E" suffix) and operates from a 4.0 V to 5.5 V supply. An 8-bit microcontroller (MCU) is a single-chip computer containing a CPU, program memory, data memory, peripherals, and I/O on a single silicon die. PIC microcontrollers use a RISC (Reduced Instruction Set Computer) Harvard architecture with separate program and data buses; the PIC16F873 implements 35 single-word instructions and is part of the "Mid-Range" 14-bit instruction core family, sitting between 12-bit baseline PICs and 16-bit enhanced PICs in Microchip's taxonomy. This category of MCU typically targets embedded control loops, sensor interfacing, and human-machine interface tasks where deterministic timing and low power matter more than raw compute. Key features include 22 digital I/O pins arranged across five ports (RA, RB, RC, RD, RE), five channels of 10-bit Analog-to-Digital Conversion (ADC), two analog comparators, a Capture/Compare/PWM (CCP) module, an Enhanced CCP module for full-bridge motor control, an MSSP peripheral supporting both SPI and I2C (master/slave), a USART with on-chip baud-rate generator, a 16-bit timer/counter with prescaler, two 8-bit timers, a watchdog timer with dedicated on-chip RC oscillator, in-circuit serial programming (ICSP) via two pins, and nanoWatt technology for low-power standby modes. The 8-bit core runs at up to 5 MIPS at 20 MHz, with 200 ns instruction execution enabling deterministic loop times. The architecture separates program memory (Flash, 14-bit word width) from data memory (RAM, 8-bit byte width), connected through separate buses to enable simultaneous instruction fetch and data access. The 10-bit ADC samples up to 5 input channels with 50 ksps throughput, suitable for slow-sensor reads. The integrated USART, MSSP (SPI/I2C) and CCP peripherals allow direct interfacing to sensors, displays, EEPROM, and other microcontrollers without external glue logic. Typical applications include industrial process control, sensor node data acquisition, motor control with back-EMF feedback, automotive body electronics (non-safety), HVAC control boards, instrumentation, and white-goods appliance controllers. The 4 MHz speed grade (PIC16F873T-04E) is the slower industrial variant; the 20 MHz speed grade is the PIC16F873T-20E. When designing with the PIC16F873T-04E/SO, ensure the ICSP programming pins (RB6/RB7) are accessible on the PCB for production programming, place a 100 nF decoupling capacitor close to VDD, and reserve the MCLR/Vpp pin with the recommended 10 kohm pull-up. The 28-SOIC package is the same footprint as the PIC16F873A-I/SO, PIC16F876 and PIC16F873-04/SO, allowing direct substitution within the same PCB design with appropriate firmware verification.

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PIC16F873T-04I/SO - 8-bit PIC MCU, 7KB Flash, 4MHz, 28-SOIC | Microchip
PIC16F873T-04I/SO

PIC16F873T-04I/SO - 8-bit PIC MCU, 7KB Flash, 4MHz, 28-SOIC | Microchip

The Microchip Technology PIC16F873T-04I/SO is an 8-bit PIC RISC Flash microcontroller with 7KB (4K x 14) of program memory, 192 bytes of RAM, and 128 bytes of EEPROM, housed in a 28-pin SOIC package supplied on tape and reel. The "T" suffix indicates tape-and-reel packaging and the "-04" speed grade runs the core at 4 MHz (200 ns instruction cycle), while "I" denotes the industrial temperature range of -40C to +85C and "SO" specifies the 0.295" wide 28-pin SOIC outline. An 8-bit PIC microcontroller is a Harvard-architecture CMOS RISC device optimized for embedded control. PIC MCUs form a tier within the broader microcontroller category, which sits under microcontrollers -> microcontrollers (MCU) -> embedded controllers -> integrated circuits. They are widely used because of their deterministic instruction execution, low power consumption via nanoWatt Technology, and rich peripheral integration, allowing a single chip to replace multiple discrete components in cost-sensitive designs. Key features of this part include 22 digital I/O lines, a 10-bit multi-channel Analog-to-Digital converter (ADC), two Capture/Compare/PWM modules with 10-bit PWM resolution, a Synchronous Serial Port (SSP) supporting SPI master and I2C (master/slave), one USART for asynchronous or synchronous serial communication, three timers (Timer0 8-bit, Timer1 16-bit, Timer2 8-bit with prescaler and postscaler), and a brown-out reset plus power-on reset. The Flash program memory is in-circuit serial programmable, allowing firmware updates without removing the part. Architecturally the PIC16F873 uses a 14-bit wide instruction word and a separate 8-bit data path, with a two-stage pipeline that delivers predictable 200 ns instruction timing at 4 MHz. The 10-bit ADC offers up to 8 input channels with successive-approximation conversion, and the MSSP peripheral can be configured for SPI or I2C bus participation. Internal oscillators and the nanoWatt power management modes allow the device to draw microampere-level currents in Sleep, making it suitable for battery-powered sensing nodes. Typical applications include industrial process control, automotive body electronics (under-the-hood modules require the extended AEC-Q100 "E" grade; the "I" grade suits cabin or non-safety systems), consumer appliance control panels, instrumentation, sensor signal conditioning, and small-format remote controls. The 28-pin SOIC footprint is convenient for hand-solder prototypes and small-batch production. When designing with this part, allocate a 5V regulated rail with a 100 nF decoupling capacitor near VDD, ensure MCLR is pulled high through a 10 kohm resistor unless external reset is desired, and place the in-circuit serial programming (ICSP) connector near the ICSP pins (RB6/RB7) to simplify programming and debugging with the MPLAB PICkit 5 or ICD 5. This page synthesizes distributor pricing, drop-in alternatives from the PIC16F873 family, and practical design notes not found in the manufacturer datasheet alone, giving engineers a single decision-ready reference for procurement and design-in.

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PIC16F873T-10E/SO - 8-Bit Flash MCU 20MHz 7KB SOIC-28 | Microchip
PIC16F873T-10E/SO

PIC16F873T-10E/SO - 8-Bit Flash MCU 20MHz 7KB SOIC-28 | Microchip

The Microchip PIC16F873T-10E/SO is an 8-bit Flash-based CMOS microcontroller from the PIC16F family, delivering up to 20 MHz instruction execution (200 ns instruction cycle) in a 28-pin SOIC package. It integrates 7 KB of program memory organized as 4K x 14 words, 192 bytes of data RAM, and 128 bytes of EEPROM, packaged as a SOIC-28 (0.295 inch body, 1.27 mm pitch). The 'E' suffix indicates the Enhanced Flash memory variant and the 'T' indicates tape-and-reel packaging. A microcontroller (MCU) is a single-chip computer containing a CPU core, program and data memory, and configurable I/O peripherals. The PIC16F family belongs to Microchip's mid-range 8-bit architecture that executes one instruction per cycle using a Harvard structure with separate program and data buses. Within the PIC16F87x sub-family, the 873 variant adds an integrated 10-bit Analog-to-Digital Converter and a synchronous serial port, distinguishing it from the 870/871/872 baseline parts that lack either ADC channels or certain communication peripherals. Key features include 22 digital I/O pins, three timers (Timer0, Timer1, Timer2), a 10-bit 5-channel ADC, a USART/SCI module for asynchronous serial communication, a Master Synchronous Serial Port (MSSP) supporting SPI and I²C, and a Capture/Compare/PWM (CCP) module. The nanoWatt Technology dynamic power management provides programmable brown-out reset, watchdog timer with on-chip oscillator, and multiple power-managed operating modes for low-power applications. The supply voltage range is 4.0 V to 5.5 V across the commercial and industrial temperature grades. Typical applications include industrial control panels, sensor signal conditioning, low-speed motor control loops, household appliance user interfaces, and battery-powered instrumentation where the 192-byte RAM, 7 KB Flash, and rich peripheral set offer a balanced cost-to-capability ratio. Engineers often use the PIC16F873T-10E/SO in designs that require a stable, mature toolchain with MPLAB X IDE, XC8 compiler, and the PICkit programmer ecosystem. When designing with this MCU, ensure that the configuration bits are set correctly for oscillator mode and watchdog operation. The ICSP programming interface shares pins with PORTB, so external pull-ups may interfere with in-circuit debugging. Decouple VDD with at least a 0.1 µF ceramic capacitor placed within 5 mm of the supply pin. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes that are not aggregated in the manufacturer datasheet, helping engineers and procurement teams quickly assess fit-for-purpose and supply risk for the PIC16F873T-10E/SO.

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PIC16F873T-20/SO - 8-Bit 20MHz MCU, 7KB Flash | Microchip
PIC16F873T-20/SO

PIC16F873T-20/SO - 8-Bit 20MHz MCU, 7KB Flash | Microchip

The Microchip PIC16F873T-20/SO is an 8-bit CMOS Flash-based RISC microcontroller running at up to 20 MHz (200 ns instruction cycle), packaged in a 28-pin SOIC (SO) wide-body 7.50 mm with tape-and-reel packaging, integrating 7 KB (4K x 14 words) of Flash program memory, 192 bytes of RAM, and 22 digital I/O pins. It belongs to the Mid-Range PIC16F family and is a 20 MHz speed-grade variant with the "T" suffix denoting Tape and Reel orientation, supporting an industrial temperature range of -40°C to +85°C and a supply voltage of 4.0 V to 5.5 V. A PIC microcontroller (Peripheral Interface Controller) is a family of 8/16/32-bit RISC microcontrollers from Microchip in which program memory, data memory, CPU, and peripherals (ADC, USART, timers, capture/compare/PWM, MSSP) are integrated into a single chip. Within the Microchip taxonomy, PIC16F is the Mid-Range 8-bit family using a 14-bit instruction word, sitting above the baseline PIC10/12/16 families and below the enhanced PIC18 family. PIC microcontrollers are widely used for embedded control where deterministic execution, low power, and broad peripheral integration matter more than raw CPU throughput. Key features include 5 channels of 10-bit ADC, a USART/SCI port, a Master Synchronous Serial Port (MSSP) supporting SPI and I²C (master/slave), two Capture/Compare/PWM modules, two 8-bit timers and one 16-bit timer, 256 bytes of EEPROM data memory, an internal brown-out reset, a watchdog timer, and in-circuit serial programming (ICSP) via the PGD/PGC pins. The Harvard-class architecture and 35 single-word instruction set give compact code density. Typical applications include appliance control, sensor signal conditioning, motor control driver boards, industrial instrument front ends, and low-power remote sensor nodes. With 22 I/O and on-chip ADC/USART/SPI/I²C, the PIC16F873T-20/SO commonly serves as the main MCU on 28-pin boards for HVAC controls, smart metering, white-goods user interfaces, and small-format automation. Designers should reserve PGD/PGC for ICSP, add a 100 nF decoupling cap close to VDD with a bulk 10 µF cap, and follow Microchip's AN734 mid-range reference for oscillator layout and MCLR reset network. This page synthesizes distributor pricing, parametric alternatives, and practical design notes beyond the manufacturer datasheet.

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PIC16F873T-20I/SO - 8-bit PIC MCU, 7KB Flash, 20MHz, 28-SOIC
PIC16F873T-20I/SO

PIC16F873T-20I/SO - 8-bit PIC MCU, 7KB Flash, 20MHz, 28-SOIC

The Microchip Technology PIC16F873T-20I/SO is an 8-bit PIC16 microcontroller (MCU) featuring 7KB (4K x 14 words) of Flash program memory, 192 bytes of SRAM, and 128 bytes of EEPROM, executing instructions at up to 20MHz (200ns instruction cycle) from a 28-pin SOIC wide-body package. The 'T' suffix denotes tape-and-reel packaging, '20' denotes 20MHz maximum clock speed, 'I' denotes the industrial -40C to +85C operating temperature range, and 'SO' denotes the 28-pin SOIC wide-body (300mil) surface-mount package. Core peripherals include 22 digital I/O pins, three timer modules (Timer0/1/2), two 16-bit Capture/Compare/PWM (CCP) modules, a 10-bit multi-channel Analog-to-Digital Converter (ADC), a USART, and a Synchronous Serial Port (SSP) supporting SPI master and I2C. The device operates from 2.0V to 5.5V across PIC16F87X family variants. A PIC (Peripheral Interface Controller) microcontroller is a family of Harvard-architecture 8-bit RISC microcontrollers originally developed by General Instruments and later popularized by Microchip Technology. PIC MCUs integrate a CPU core, non-volatile Flash program memory, RAM, EEPROM, and a configurable set of peripherals (ADC, timers, communication interfaces) onto a single CMOS die. They sit at the low-power/low-cost edge of the embedded-MCU taxonomy: PIC -> microcontroller -> embedded processor -> semiconductor IC. PIC16F-series devices target mid-range 8-bit applications with instruction counts around 35, balancing code density against deterministic real-time performance. Key features of the PIC16F873T-20I/SO include the 10-bit ADC with up to 5 input channels, two 16-bit CCP modules providing PWM (max 10-bit resolution), Capture (max resolution 12.5ns at 20MHz), and Compare functions, plus an in-circuit serial programming (ICSP) interface that allows firmware updates without removing the MCU from the board. The Harvard architecture separates program and data buses, allowing instruction fetch and operand read in a single 200ns cycle. The Flash-based program memory supports >1000 erase/write cycles and typical data retention exceeding 40 years, according to Microchip's PIC16F873/4/6/7 datasheet family documentation. Typical applications for the PIC16F873T-20I/SO span industrial control, sensor interfacing, low-power embedded control, home appliances, automotive body electronics, and consumer white goods. Engineers choose this part for legacy PIC16F87X designs, PICkit-2/PICkit-3 ICD debugging, and applications where code size, peripheral count, and industrial temperature range are more important than raw CPU throughput. Note that Microchip has marked the broader PIC16F87X family as a 'legacy' family - newer designs should evaluate PIC16F1xxx enhanced mid-range or PIC18 alternatives. When designing with this device, ensure decoupling capacitors (100nF ceramic plus 10uF bulk) are placed within 5mm of VDD/VSS pins and that the MCLR reset pin has the proper pull-up configuration. Designers should also verify that ICSP programming header connections are routed to allow in-circuit firmware updates during development.

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PIC16F874-04/L - 8-Bit 4MHz 7KB Flash MCU 44-PLCC | Microchip
PIC16F874-04/L

PIC16F874-04/L - 8-Bit 4MHz 7KB Flash MCU 44-PLCC | Microchip

The Microchip Technology PIC16F874-04/L is an 8-bit CMOS FLASH-based microcontroller from the PIC16F family, operating at up to 4 MHz with 200 ns instruction execution, packaged in a 44-pin PLCC (Plastic Leaded Chip Carrier) with J-lead termination. It integrates 7 KB (4K x 14) of FLASH program memory, 192 bytes of SRAM, and 128 bytes of EEPROM data memory, providing a balanced memory footprint for embedded control applications. The device operates from 4V to 5.5V supply across the industrial -40C to +85C temperature range, and exposes 33 digital I/O pins for peripheral interfacing. A PIC microcontroller is a programmable system-on-chip that combines a RISC CPU core, non-volatile program memory, RAM, EEPROM, and on-chip peripherals (timers, ADC, USART, I2C/SPI, PWM) into a single IC. Within the broader taxonomy, the PIC16F874 belongs to the mid-range PIC16 family, which sits between the baseline PIC10/12/16 family and the high-performance PIC18 and dsPIC families. Mid-range PICs are widely used in industrial control, automotive body electronics, and consumer appliances because of their deterministic architecture, low power consumption, and free MPLAB X IDE toolchain. Key features of the PIC16F874-04/L include five 8-bit/16-bit timer/counter modules, a 10-bit ADC with up to 8 channels, a USART with support for RS-485/RS-232, an MSSP module supporting SPI and I2C (master/slave), a parallel slave port for external bus interfacing, and a 14-bit instruction word optimized for C and assembly development. The 04 speed grade limits the oscillator to 4 MHz, yielding 1 us instruction cycles, which is well-suited to applications that do not require high-speed sampling. Architecturally, the PIC16F874 uses a Harvard RISC core with separate code and data buses, a hardware multiplier is absent on this mid-range device, and interrupt handling is vectored with prioritized sources. The FLASH memory supports in-circuit serial programming (ICSP) via RB6/RB7, enabling field firmware updates without removing the device from the board. Typical applications include industrial automation controllers, HVAC and thermostat systems, motor control front-ends, smart sensor hubs, and legacy embedded products migrating from PIC16C/CR to FLASH. The 44-PLCC package offers socketed replacement-friendly mounting for low-volume and prototyping builds. According to Microchip, the PIC16F874 is recommended for new designs; engineers are pointed to PIC16F884 for new designs that need more memory, ADC channels, and peripherals. When designing with this MCU, allocate a 100 nF decoupling capacitor within 5 mm of VDD and a 10 uF bulk capacitor near the ICSP header. Use a 4 MHz crystal with 22 pF load capacitors if higher timing accuracy than the internal RC oscillator is required. Note that the 04 speed grade caps oscillator frequency at 4 MHz; if 20 MHz operation is needed, select the PIC16F874-20/L variant.

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PIC16F874-04/PQ - 8-bit MCU, 7KB Flash, 33 I/O, 4MHz | Microchip
PIC16F874-04/PQ

PIC16F874-04/PQ - 8-bit MCU, 7KB Flash, 33 I/O, 4MHz | Microchip

The Microchip Technology PIC16F874-04/PQ is an 8-bit Flash microcontroller from the PIC16F87x family operating at up to 4 MHz with 7 KB (4K x 14) of program memory, 192 bytes of RAM, and 128 bytes of EEPROM, housed in a 44-pin MQFP (10x10 mm) package. It integrates a 10-bit ADC with 8 channels, a USART, MSSP (SPI/I2C), two 8-bit timers and one 16-bit timer, plus a 33-pin I/O complement in an industry-standard PIC mid-range core architecture. A Microcontroller Unit (MCU) is a single-chip computer containing a CPU core, program memory (Flash/ROM), data memory (RAM), timers, communication peripherals, and I/O pins on one IC. PIC microcontrollers are RISC-based Harvard-architecture devices optimized for deterministic instruction execution. Within the broader semiconductor hierarchy, MCUs sit below microprocessors (MPUs) and above discrete logic ICs, serving as the embedded "brain" in everything from white goods to industrial controllers. Key features of the PIC16F874-04/PQ include 4 MHz maximum clock speed, 200 ns instruction cycle time, an operating voltage range of 4.0 V to 5.5 V, in-circuit serial programming (ICSP), and a 14-bit instruction word with only 35 single-word instructions. The 10-bit A/D converter with 8 input channels is multiplexed across port pins, enabling direct sensor interfacing without external ADC ICs. The PIC16F874 architecture uses a 14-bit instruction word with separate code and data buses (Harvard), allowing simultaneous fetch and access. The 4 MHz oscillator yields a 1 MIPS throughput, and the integrated brown-out reset, watchdog timer, and power-on reset provide robust field reliability. The 33 I/O pins can source/sink up to 25 mA each, sufficient for direct LED drive. Typical applications include industrial control panels, instrumentation, sensor signal conditioning nodes, motor-control front-ends, and embedded data acquisition systems. The wide 4-5.5V supply range suits both 5V industrial buses and battery-backed designs. Common companion chips are the MCP2551 CAN transceiver and the MCP1700 LDO regulator. When designing with this part, ensure decoupling on VDD/VSS pins with 100 nF ceramic caps placed within 5 mm of each pin. Note that the "-04" speed grade limits operation to 4 MHz; for 20 MHz use the PIC16F874-20/PQ variant. The 44-MQFP footprint matches the PIC16F877-04/PQ, allowing PCB reuse with larger-memory variants. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone. Source data is from Microchip's official PIC16F87x datasheet (DS30292D) and 2026 distributor listings.

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PIC16F874-04E/L - 4MHz 8-bit Flash MCU 7KB | 44-PLCC | Microchip
PIC16F874-04E/L

PIC16F874-04E/L - 4MHz 8-bit Flash MCU 7KB | 44-PLCC | Microchip

The Microchip Technology PIC16F874-04E/L is an 8-bit CMOS Flash-based PIC microcontroller in a 44-pin PLCC (16.59x16.59 mm) package, executing instructions at 4 MHz with 200 ns cycle time. The part integrates 7 KB of Flash program memory (organized 4K x 14), 192 bytes of SRAM data memory, and 128 bytes of EEPROM, and it carries the -04E temperature/qualification suffix denoting the extended industrial temperature grade with automotive-style process screening. A microcontroller (MCU) is a single-chip computer containing a CPU core, program memory, working RAM, and a rich set of programmable peripherals. PIC16F-series MCUs from Microchip use a RISC-based Harvard architecture with only 35 single-word instructions, making them well suited to deterministic, low-latency embedded control. As members of the broader 8-bit MCU family hierarchy (PIC16 -> 8-bit PIC -> microcontroller -> embedded computing -> semiconductor), they balance code density, peripheral integration, and ultra-low power consumption. Key features include 33 digital I/O lines, three timer/counter modules, a 10-bit multi-channel analog-to-digital converter, and hardware serial interfaces for I2C, SPI, and UART/USART. The device supports 14 hardware interrupts and 2 capture/compare/PWM modules, providing enough flexibility for motor control, instrumentation, and sensor interfacing. The enhanced Flash memory enables in-circuit serial programming (ICSP) and on-chip debug capability, while the EEPROM supports non-volatile data storage for configuration and calibration parameters. Architecturally, the PIC16F874 uses a 14-bit instruction word with an 8-bit data path and an integrated brown-out reset, watchdog timer, and power-on reset supervisor. The -04 speed grade (4 MHz maximum oscillator input) and the -E extended-industrial temperature suffix (-40C to +125C) make it suitable for harsh-environment embedded designs. In-system programmability allows field firmware updates without removing the MCU from the application PCB. Typical applications include automotive body and chassis ECUs, industrial control panels, instrumentation, sensor conditioning nodes, low-end motor control, and small appliance controllers. The wide peripheral set lets one part serve both as a communication gateway and a local control node. When designing with the PIC16F874-04E/L, observe the supply voltage range of 4.0 V to 5.5 V, place the decoupling capacitor as close as possible to VDD/SS pins, and configure the MCLR pin with the recommended pull-up network. Verify that oscillator layout follows Microchip guidance to avoid timing drift. This page synthesizes distributor pricing, drop-in same-package alternatives, and design considerations not found in the manufacturer datasheet alone.

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PIC16F874-04E/PQ - 4MHz 8-bit PIC MCU 7KB Flash 44-MQFP | Microchip
PIC16F874-04E/PQ

PIC16F874-04E/PQ - 4MHz 8-bit PIC MCU 7KB Flash 44-MQFP | Microchip

The Microchip Technology PIC16F874-04E/PQ is an 8-bit RISC CMOS FLASH-based microcontroller in the PIC16 family, packaged in a 44-pin MQFP (10x10 mm) and qualified to the AUTOMOTIVE temperature grade (the "-E" suffix). It integrates 7 KB (4K x 14 words) of FLASH program memory, 192 bytes of RAM, and 128 bytes of EEPROM data memory, and executes instructions in a 200 ns cycle at a 4 MHz oscillator input (20 MHz maximum instruction rate equivalent). The core uses the PIC16 mid-range architecture with only 35 single-word instructions, supporting 14-bit wide instruction words. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, non-volatile program memory (FLASH/ROM), volatile data memory (RAM), and configurable I/O peripherals onto one die. The PIC16F874-04E/PQ belongs to the broader product taxonomy: PIC16 mid-range family -> 8-bit PIC microcontrollers -> Microcontroller ICs -> Integrated Circuits -> Semiconductors. Within the power-management hierarchy, the device is the central "brain" that orchestrates analog and digital peripherals on a PCB. Key features include an integrated 10-bit successive-approximation ADC with up to 8 channels, a USART module for asynchronous serial communication, a Synchronous Serial Port (SSP) supporting SPI and I2C master/slave modes, two 8-bit timers plus one 16-bit timer with capture/compare/PWM, a watchdog timer with its own on-chip RC oscillator, and a brown-out reset circuit. The device operates from 4.0 V to 5.5 V and offers up to 33 digital I/O lines across five ports (PORTA-PORTE), making it suitable for mixed-signal embedded designs. The architecture combines a Harvard-bus CPU with peripheral modules clocked from a user-supplied oscillator; instruction throughput of 5 MIPS at 20 MHz enables real-time control loops. In-circuit serial programming (ICSP) is supported via two pins, allowing firmware updates after PCB assembly. Typical applications include industrial control panels, automotive body and chassis subsystems (the -E temperature grade is qualified for this segment), appliance controllers, instrumentation front-ends, and sensor-interface boards that need EEPROM-backed data logging. When designing with this MCU, plan the oscillator and ICSP layout carefully: place the 4 MHz crystal within 5 mm of OSC1/OSC2, and keep the ICSP lines accessible. The 44-MQFP footprint also has a pin-compatible 40-pin PDIP cousin (PIC16F874-04/P) for through-hole prototypes. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes that go beyond the manufacturer datasheet summary, helping engineers evaluate the PIC16F874-04E/PQ for new designs and legacy maintenance.

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PIC16F874-04E/PT - 8-Bit 4MHz Flash MCU, 7KB, 44-TQFP | Microchip
PIC16F874-04E/PT

PIC16F874-04E/PT - 8-Bit 4MHz Flash MCU, 7KB, 44-TQFP | Microchip

The Microchip Technology PIC16F874-04E/PT is an 8-bit RISC Flash microcontroller from the PIC® 16F family, running at 4 MHz (200 ns instruction cycle) and offering 7 KB of Flash program memory (4K × 14 words), 192 bytes of RAM, and 33 digital I/O pins. Housed in a 44-pin TQFP (PT) package, this automotive-temperature-grade part operates from 4 V to 5.5 V and integrates nanoWatt power management, an active-high MCLR reset, and on-chip peripherals such as Capture/Compare/PWM (CCP), USART, MSSP (SPI/I²C), an 8-channel 10-bit ADC, and two 8-bit timers plus one 16-bit timer. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash/ROM), data memory (RAM), and a range of peripheral interfaces. The PIC16F874 belongs to Microchip's mid-range PIC® 16F family, which uses a Harvard architecture with separate program and data buses, enabling predictable instruction timing. Within the broader taxonomy, the PIC16F874 sits as: 8-bit MCU -> RISC MCU -> PIC® 16F family -> Flash-based mid-range PIC -> automotive-grade variant (E suffix) -> TQFP-44 package. This hierarchy is what allows engineers to migrate between similar PIC16F87x parts with minimal code changes. Key features of this device include 200 ns instruction execution time at 4 MHz oscillator, in-system programmability via ICSP, a 10-bit Analog-to-Digital Converter (ADC) with up to 8 input channels, and the nanoWatt low-power feature set that includes sleep mode, watchdog timer, and on-chip oscillator calibration. Brown-out Reset (BOR) and Power-on Reset (POR) ensure reliable startup under fluctuating supply conditions, while the In-Circuit Serial Programming (ICSP) interface allows firmware updates without removing the part from the board. The PIC16F874 is built on a CMOS process and uses a 14-bit instruction word format. Its peripheral set is comparable to the larger PIC16F877 but in a smaller 44-pin footprint rather than 40-pin PDIP or 44-pin TQFP. Compared with the 28-pin PIC16F876, this 44-pin variant exposes additional I/O and ADC channels. The architecture supports prioritized interrupts with hardware context saving and a hardware stack eight levels deep. Typical applications for the PIC16F874-04E/PT include automotive body controllers and instrument clusters, industrial sensor conditioning boards, low-cost motor control using PWM and CCP, battery management front-ends, and small appliances requiring a low-temperature microcontroller that can be re-flashed in the field. Its wide operating voltage tolerance (4 V to 5.5 V) makes it tolerant of the load-dump transients seen in 12 V automotive systems when paired with a 5 V regulator. When designing with this part, reserve the MCLR pin as the reset input (do not tie directly to VDD without the recommended pull-up), and follow Microchip's recommended decoupling scheme of a 100 nF ceramic capacitor on each VDD pin and a 10 µF bulk capacitor near the IC. For automotive (-40 °C to +125 °C) deployment, pay special attention to oscillator start-up time and use the internal RC oscillator only when timing accuracy is non-critical. This page synthesizes distributor pricing, drop-in alternatives within the same TQFP-44 footprint, and practical design notes not found on a single manufacturer datasheet page.

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PIC16F874-04I/L - 8-bit MCU, 4MHz, 7KB Flash, 44-PLCC | Microchip
PIC16F874-04I/L

PIC16F874-04I/L - 8-bit MCU, 4MHz, 7KB Flash, 44-PLCC | Microchip

The Microchip Technology PIC16F874-04I/L is a peripheral-rich 8-bit CMOS Flash microcontroller based on Microchip's PIC16 enhanced architecture, delivering 4 MIPS at 4 MHz and packaged in a 44-pin PLCC (Plastic Leaded Chip Carrier) measuring 16.59 x 16.59 mm. It integrates 7 KB of Flash program memory (4K x 14 words), 192 bytes of RAM, and 128 bytes of EEPROM data memory, providing a balanced mix of code space, volatile scratchpad, and non-volatile storage for embedded applications. What is a PIC microcontroller? The PIC (Peripheral Interface Controller) is a family of 8/16/32-bit RISC microcontrollers originally developed by General Instrument's microelectronics division and later popularized by Microchip Technology. PIC MCUs occupy the hypernym hierarchy microcontroller -> embedded processor -> semiconductor IC, and are widely adopted for deterministic real-time control tasks in industrial, automotive, and consumer applications due to their compact instruction set, low power modes, and rich peripheral integration. The PIC16F874 belongs to the PIC16F mid-range family, sitting between the baseline PIC10/12/16 and the high-performance PIC18/PIC24 families. Key features of the PIC16F874-04I/L include 33 digital I/O lines, a 10-bit 8-channel Analog-to-Digital Converter (ADC), two 8-bit timers plus one 16-bit timer, a USART for asynchronous/synchronous serial communication, an MSSP module supporting both SPI and I²C (Master/Slave), a Capture/Compare/PWM (CCP) module, and a watchdog timer with on-chip RC oscillator for reliable operation. The device supports in-circuit serial programming (ICSP) via two pins, enabling field firmware updates without desoldering. Architecturally, the PIC16F874 employs a Harvard-style RISC core with separate program and data buses, a 14-bit instruction word, and a 200 ns instruction execution time at 4 MHz. The four available oscillator modes (RC, LP, XT, HS) plus the on-chip 4 MHz RC oscillator allow designers to balance cost, EMI, and power. An integrated brown-out reset (BOR) circuit and power-on reset (POR) ensure deterministic startup across the 4.0–5.5 V supply range. Typical applications include industrial control panels, HVAC actuators, automotive body electronics, sensor signal conditioning, low-end human-machine interfaces (HMIs) with character LCDs, and legacy embedded designs originally built around the 16F family. The wide operating temperature range of -40 °C to +85 °C (industrial 'I' suffix) makes the part suitable for uncontrolled thermal environments. When designing with this part, observe the 4 MHz maximum clock for the -04 speed grade; for designs migrating from the 20 MHz -20 variant, simply replace the speed-grade suffix and verify timing margins. The PLCC-44 socket allows convenient prototyping, and pin compatibility with the PIC16F877 enables memory upgrade paths without PCB rework. This page synthesizes verified distributor pricing, drop-in alternatives within the PLCC-44 footprint, and practical design notes not found in the manufacturer datasheet alone.

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PIC16F874-04I/P - 8-bit 4MHz 7KB Flash MCU 40-PDIP | Microchip
PIC16F874-04I/P

PIC16F874-04I/P - 8-bit 4MHz 7KB Flash MCU 40-PDIP | Microchip

The Microchip Technology PIC16F874-04I/P is an 8-bit CMOS Flash-based microcontroller built on the PIC16 architecture, offering 7KB (4K x 14) of Flash program memory, 192 bytes of SRAM, and 128 bytes of EEPROM in a 40-pin PDIP through-hole package. It executes instructions at 200 ns per cycle from a 4 MHz maximum clock input, with only 35 single-word instructions to learn, making it well suited to legacy and cost-sensitive industrial designs. According to the manufacturer datasheet, the part carries the industrial temperature grade suffix "I" for -40C to +85C operation and provides 33 digital I/O lines, a 10-bit ADC, and a USART. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory, data RAM, peripherals, and I/O on one die. Within the broader semiconductor hierarchy, an MCU sits under microcontrollers, which in turn are a subset of digital logic integrated circuits (ICs) used for embedded control. The PIC16F family from Microchip is one of the longest-running 8-bit RISC architectures, prized for deterministic timing, low power, and a small instruction set that shortens firmware development cycles. Key features of the PIC16F874-04I/P include the 4 MHz maximum oscillator, 4K x 14 Flash word program memory (7KB), 192 bytes of data SRAM, and 128 bytes of EEPROM. It provides 33 I/O pins, an integrated 10-bit A/D converter, two 8-bit timers plus one 16-bit timer, a USART with addressing, a Master Synchronous Serial Port (MSSP) for SPI/I2C, and two Capture/Compare/PWM modules. These peripherals address motor control, sensor readout, and human-machine interface (HMI) functions without external support chips. The 40-pin PDIP form factor and pinout are compatible with PIC16C73B/74B/76/77 devices, simplifying board-level migration. According to Microchip's product page, Microchip recommends the newer PIC16F884 as a modern replacement offering more memory and peripherals in the same 40-pin footprint for new designs. The 4 MHz speed grade is appropriate for control loops, slow communication, and battery-powered sensor nodes rather than high-throughput DSP workloads. Typical applications include industrial automation controllers, building HVAC systems, appliance control boards, instrumentation front panels, and legacy embedded retrofits. The wide operating voltage range (2.0 V to 5.5 V) allows direct connection to 3.3 V or 5 V rails. Engineers should observe proper decoupling (0.1 uF ceramic near VDD) and consider the in-circuit serial programming (ICSP) interface for firmware updates in fielded units.

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PIC16F874-04I/PQ - 4MHz 8-bit Flash MCU 7KB | Microchip
PIC16F874-04I/PQ

PIC16F874-04I/PQ - 4MHz 8-bit Flash MCU 7KB | Microchip

The Microchip Technology PIC16F874-04I/PQ is an 8-bit CMOS Flash-based microcontroller built on the PIC16 enhanced core, delivering 4 MIPS performance from a 4 MHz internal oscillator in a 44-pin MQFP (PQ) package rated for the industrial temperature range (-40C to +85C). It integrates 7 KB (4K x 14) of Flash program memory, 192 bytes of SRAM, 128 bytes of EEPROM data memory, and 33 general-purpose digital I/O pins, providing a compact peripheral-rich solution for embedded control. A microcontroller (MCU) is a single-chip computer containing a processor core, non-volatile program memory, working RAM, and integrated peripherals such as timers, communication interfaces and analog converters. The PIC16F family sits in the hierarchy: microcontroller -> 8-bit MCU -> PIC16 enhanced family -> flash-based MCU. Within the broader taxonomy it belongs to: semiconductor -> integrated circuit -> microcontroller -> embedded controller. This category targets low-power deterministic control applications where simple instruction sets and predictable interrupt latency matter more than raw compute throughput. Key features include an 8-channel, 10-bit analog-to-digital converter (ADC), two 8-bit timers plus one 16-bit timer, a Capture/Compare/PWM (CCP) module, a USART with addressable Receive Pin Select, an MSSP module supporting both SPI and I2C (master/slave), and a parallel slave port for external memory expansion. Brown-out Reset (BOR), Watchdog Timer (WDT) with dedicated oscillator, and In-Circuit Serial Programming (ICSP) round out the safety and production feature set. The device operates from 4.0 V to 5.5 V with on-chip power-on reset and a programmable code-protection scheme. Its 35 single-word instruction RISC architecture executes every instruction in a single 200 ns cycle at 20 MHz; the -04 speed grade specifically limits the maximum clock to 4 MHz, trading throughput for lower EMI and power consumption. The 44-pin MQFP (PQ) outline gives a compact surface-mount footprint with all peripheral pins brought out, including 8 analog channels on PORTA/PORTB and 8-bit PORTD/PORTE for parallel-bus applications. Typical applications include industrial control panels, sensor signal conditioning with on-chip ADC, low-speed communication bridges (RS-232/USART or I2C peripherals), HVAC thermostat controllers, appliance user-interface boards, and battery-backed instrumentation. The wide I/O count makes it well suited to driving multiplexed keypads, character LCDs, and small graphic displays. When designing with the PIC16F874-04I/PQ, ensure the application firmware does not exceed 4 MHz instruction-clock operation; the -20 variant is required if the design needs 20 MHz. Decoupling the analog AVdd/AVss pair with 0.1 uF + 10 uF and following Microchip AN546 and PICmicro Mid-Range Reference Manual guidance preserves ADC accuracy and minimizes POR/BOR reset noise. This page synthesizes real-time distributor pricing, drop-in same-package alternatives (PIC16F874A, PIC16F877A, PIC16F874-04, PIC16F877-04) and practical design notes that go beyond the bare datasheet.

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PIC16F874-04I/PT - 8-bit 7KB Flash MCU, 20MHz, TQFP-44 | Microchip
PIC16F874-04I/PT

PIC16F874-04I/PT - 8-bit 7KB Flash MCU, 20MHz, TQFP-44 | Microchip

The Microchip Technology PIC16F874-04I/PT is an 8-bit CMOS Flash-based microcontroller in the PIC16F family, packaged in a 44-pin TQFP (PT) surface-mount form factor. It integrates 7 KB of program Flash, 192 bytes of RAM, and 128 bytes of EEPROM, runs at up to 20 MHz (200 ns instruction cycle), and operates from 4.0 V to 5.5 V across the industrial temperature range (-40 C to +85 C, indicated by the "I" suffix). The device exposes up to 33 digital I/O lines plus a 10-bit, 8-channel ADC, two 8-bit timers and one 16-bit timer, a synchronous/asynchronous serial port (USART/SCI) with addressable mode, an MSSP module supporting SPI and I2C (master/slave), and a Capture/Compare/PWM (CCP) module. What is a PIC16F 8-bit microcontroller? The PIC16F family sits within the broader 8-bit microcontroller category, which in turn belongs to the microcontroller unit (MCU) sub-segment of embedded processors. Within Microchip's portfolio, PIC16F parts are mid-range MCUs that balance low power consumption, deterministic RISC execution, and rich on-chip peripherals; they share the PIC16 instruction set so firmware is portable across the 18-, 28-, and 40-/44-pin variants. Compared with 32-bit Cortex-M parts, PIC16F devices trade raw compute for lower BOM cost, simpler toolchains, and decades of legacy code. Key features of the PIC16F874-04I/PT include 14 interrupt sources, a hardware 8x8 multiplier, nanoWatt power management with multiple idle/sleep modes, an internal oscillator option on some family members, and in-circuit serial programming (ICSP) via two pins. The integrated brown-out reset and power-on reset circuitry improve system robustness in industrial environments. Architecturally, the part uses a Harvard RISC core with a single-cycle ALU and a 14-bit-wide instruction word. This yields deterministic 200 ns instruction execution at 20 MHz and predictable interrupt latency, which is critical in motor-control and real-time sensing loops. Typical applications include industrial sensor nodes, motor-control (BLDC, stepper, brushed DC) front-ends, HVAC controllers, security and alarm panels, automotive body and chassis subsystems, smart metering, and consumer white-goods user-interface controllers. The wide 4.0-5.5 V input range and industrial-grade temperature profile also suit 24 V industrial bus systems when paired with an upstream switching pre-regulator. When designing with this part, allocate a 10 kohm pull-up on the MCLR pin per the Microchip reference design and ensure decoupling is placed within 5 mm of the VDD/AVDD and VSS/AVSS pins. For new designs, evaluate the recommended migration path (PIC16F884) since Microchip flags this family as legacy.

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PIC16F874-10E/L - 8-bit 10MHz MCU, 7KB Flash, 44-PLCC | Microchip
PIC16F874-10E/L

PIC16F874-10E/L - 8-bit 10MHz MCU, 7KB Flash, 44-PLCC | Microchip

The Microchip Technology PIC16F874-10E/L is a CMOS FLASH-based 8-bit PIC16 family microcontroller with a 10 MHz core speed, 7 KB (4K x 14) of program memory, 192 bytes of RAM and 128 bytes of EEPROM, housed in a 44-pin PLCC (J-Lead) package. It integrates the PIC RISC architecture with 35 single-word instructions, executes each instruction in 200 ns at 10 MHz, and supports I2C, SPI and USART peripherals. A microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory (Flash/EEPROM), volatile data memory (RAM), and peripheral blocks (timers, ADC, communication controllers). The PIC16F family is positioned within Microchip's mid-range 8-bit portfolio, sitting between baseline PIC10/12 devices and enhanced PIC18 parts, and is widely used in industrial control, automotive body electronics and consumer appliances where deterministic interrupt response and low BOM cost matter more than raw compute throughput. Key features of this device include 33 digital I/O lines, 8 channels of 10-bit ADC, two 8-bit timers plus one 16-bit timer, a capture/compare/PWM (CCP) module, an analog comparator, and a 5V supply operating range from 4 V to 5.5 V. The on-chip Flash program memory supports in-circuit serial programming (ICSP) and in-circuit debugging, allowing firmware updates and debug without removing the part from the board. The 'E' suffix denotes the industrial temperature grade (-40C to +125C) and the '/L' suffix denotes the 44-pin PLCC package. Typical applications include industrial sensor interfaces, motor control signal conditioning, HVAC fan/valve controllers, and white-goods user interface boards. The wide ADC channel count and rich timer resources make it well suited for closed-loop feedback designs that require multiple analog inputs and PWM outputs simultaneously. For new designs Microchip recommends the pin-compatible PIC16F884 as a modern migration target with more memory and peripherals. When designing with PIC16F874-10E/L, ensure the MCLR reset circuit follows Microchip application note AN587 and place a 100 nF decoupling capacitor close to each VDD pin. The 44-PLCC package is a through-hole J-lead variant suited for socketed legacy and industrial assemblies, not high-vibration automotive under-hood environments where QFN packages are preferred.

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PIC16F874-10E/P - 8-bit PIC MCU, 7KB Flash, 10MHz, 40-DIP | Microchip
PIC16F874-10E/P

PIC16F874-10E/P - 8-bit PIC MCU, 7KB Flash, 10MHz, 40-DIP | Microchip

The Microchip Technology PIC16F874-10E/P is an 8-bit CMOS flash-based PIC microcontroller delivering 7KB of program memory, 192 bytes of RAM, and 33 digital I/O pins, all housed in a 40-pin PDIP (Plastic DIP) through-hole package. It executes instructions in 200 ns at a 10 MHz maximum clock rate and operates from a 4 V to 5.5 V single supply. The "-10E" suffix denotes the 10 MHz speed grade with the Extended (-40C to +125C) industrial temperature range. A microcontroller (MCU) is a single-chip computer containing a CPU core, program memory (Flash/ROM), data memory (RAM), and programmable peripheral blocks such as timers, ADC, UART, and I/O ports. The PIC16F874 belongs to Microchip's mid-range PIC16 family, which is positioned between the baseline PIC10/12/16 series and the high-performance PIC18/PIC24 families. PIC MCUs are widely used in embedded control because they combine deterministic Harvard architecture, low power consumption, and a compact instruction set (35 instructions on this device) that simplifies firmware development. Key features include 7KB Flash program memory, 192 bytes of RAM, 128 bytes of EEPROM, an 8-channel 10-bit ADC, two 8-bit timers and one 16-bit timer, a USART module, an MSSP module for SPI/I2C, a Parallel Slave Port, and nanoWatt technology for power-managed sleep modes. The 33 I/O pins support individual direction control and weak pull-ups. Internally, the PIC16F874 uses a 14-bit wide instruction word with separate program and data buses (Harvard architecture). The CPU is driven by a four-phase clock and supports both interrupt-driven and polled designs. The integrated brown-out reset and power-on reset circuits, combined with the extended temperature range, make this part suitable for industrial and automotive-grade applications. Typical applications include industrial control panels, sensor interface boards, motor control (low-side DC), consumer appliance controllers, and battery-powered instrumentation. The wide temperature range also makes it a fit for outdoor and unattended installations. When designing with this part, ensure decoupling: 100 nF on VDD with a 10 uF bulk cap near the IC. Note that Microchip recommends the newer PIC16F884 for new designs; the PIC16F874-10E/P remains a valid drop-in for legacy 40-pin PIC16F87X designs and existing PCBs. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not found in the standalone manufacturer datasheet.

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PIC16F874-10E/PT - 8-bit Flash MCU, 7KB, 44-TQFP | Microchip
PIC16F874-10E/PT

PIC16F874-10E/PT - 8-bit Flash MCU, 7KB, 44-TQFP | Microchip

The Microchip Technology PIC16F874-10E/PT is an 8-bit CMOS Flash-based microcontroller built on the PIC16 architecture, offering 7 KB of program memory, 192 bytes of RAM, and 33 digital I/O lines in a 44-pin TQFP (PT) package. The '10E' speed grade denotes a 10 MHz oscillator / 200 ns instruction cycle, and the 'E' suffix designates the extended industrial temperature range (-40 °C to +125 °C). The device operates from 4.0 V to 5.5 V, executes the 35-instruction PIC instruction set, and includes on-chip peripherals such as a 10-bit ADC, USART, MSSP (SPI/I²C), and capture/compare/PWM modules. Background: An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory (Flash or ROM), volatile data memory (RAM), and peripheral interfaces into one package. The PIC16F family from Microchip Technology is a mature mid-range 8-bit MCU platform widely used in industrial control, automotive body electronics, and consumer appliances. Within the product taxonomy, PIC16F874 belongs to the 8-bit microcontrollers -> microcontrollers -> integrated circuits -> semiconductors hierarchy. Variants in the PIC16F87x family are differentiated primarily by memory size, package pin count, and peripheral set rather than core architecture. Key features include Flash program memory supporting in-circuit serial programming (ICSP), a 10-bit successive-approximation ADC with up to 8 channels, a USART module for asynchronous or synchronous serial communication, an MSSP module that supports both SPI and I²C master/slave operation, three timers (Timer0, Timer1, Timer2), and dual CCP modules for PWM, capture, or compare. The 'nanoWatt Technology' designation indicates power-managed sleep modes with currents down to the nanoampere range, making the part suitable for battery-powered applications. Technically, the PIC16F874-10E/PT uses a Harvard architecture with separate program and data buses, a 14-bit instruction word, and direct/indirect addressing modes. The 200 ns instruction execution supports deterministic interrupt latency that is well-documented in the Microchip PICmicro Mid-Range Reference Manual. The 44-pin TQFP package offers a wider pin count than the 28-pin siblings (PIC16F873/876) and exposes the full 33-I/O capability plus dedicated OSC1/OSC2, MCLR, and analog reference pins. Typical applications include industrial sensor interfaces, HVAC control boards, automotive body modules, embedded data loggers, and consumer white-goods controllers. The wide operating voltage (4.0–5.5 V) and extended temperature range make it suitable for both indoor and harsh-environment deployments. When designing with this device, ensure that the ICSP programming header includes the standard PGD/PGC/MCLR/VSS/VPP pinout, and that the brown-out reset (BOR) configuration matches the supply profile. Microchip recommends MPLAB X IDE and the XC8 compiler for new firmware development.

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PIC16F874-20/L - 20MHz 8-Bit Flash MCU | Microchip
PIC16F874-20/L

PIC16F874-20/L - 20MHz 8-Bit Flash MCU | Microchip

The Microchip Technology PIC16F874-20/L is a 20 MHz, 8-bit CMOS Flash microcontroller with 7 KB of program memory organized as 4K x 14 words, 192 bytes of RAM, and 33 I/O pins, housed in a 44-pin PLCC package. The device belongs to the PIC16F family of 8-bit microcontrollers and is designed for embedded control systems requiring programmable Flash memory, serial communication peripherals, and a broad digital I/O count. An 8-bit microcontroller is a compact embedded-control device that combines a processor core, program memory, data memory, and peripherals on one integrated circuit. The PIC16F874-20/L executes a 200 nanosecond instruction cycle and supports a compact instruction set of 35 single-word instructions, allowing control logic to be implemented with efficient register-based operations. Its Flash-based architecture supports in-circuit programming and allows firmware to be updated without a separate programmable-memory device. The verified product information identifies 7 KB of Flash program memory, 192 bytes of RAM, 33 I/O pins, and communication capabilities including I2C, SPI, and UART. These features make the PIC16F874-20/L appropriate for industrial embedded controllers, data-acquisition equipment, communications modules, and general-purpose control boards where multiple digital inputs and outputs are required. The 20 MHz maximum clock speed provides a useful balance between processing throughput, power consumption, and design simplicity. The PLCC-44 package provides a mechanically robust, socket-compatible form factor for prototype boards, legacy control systems, and applications where field replacement is useful. Because the package uses a leaded surface-mount format rather than a fine-pitch package, the device is also practical for designs assembled without lead-free component placement constraints. The product designation includes the 20 MHz speed grade and the /L package and temperature-grade suffix. The PIC16F874-20/L is a general-purpose MCU rather than a dedicated power, signal, or communications component. Designers should use the manufacturer datasheet for the complete pin assignment, electrical limits, timing characteristics, memory map, and peripheral configuration. The device should be selected when an established PIC16F874 design, Flash programmability, and a 44-pin PLCC footprint are more important than using the newest or smallest microcontroller in the family. This page combines the verified manufacturer and distributor information for PIC16F874-20/L with practical sourcing, packaging, and design guidance. It highlights the 20 MHz operating speed, 7 KB Flash memory, 192-byte RAM, 33 I/O pins, and PLCC-44 package so engineers can quickly assess fit, programming requirements, and board compatibility before requesting a quote.

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PIC16F874-20/P - 8-Bit 20MHz 7KB Flash MCU | Microchip
PIC16F874-20/P

PIC16F874-20/P - 8-Bit 20MHz 7KB Flash MCU | Microchip

The Microchip Technology PIC16F874-20/P is an 8-bit CMOS Flash microcontroller from the PIC16F family running at up to 20MHz instruction execution, packaged in a 40-pin PDIP through-hole footprint. It integrates 7KB of Flash program memory (4K x 14 words), 192 bytes of RAM, and 128 bytes of EEPROM, with 33 digital I/O pins grouped across multiple ports for flexible peripheral routing. What is an 8-bit Flash microcontroller? An 8-bit Flash microcontroller is a single-chip computer built around an 8-bit data path, integrating CPU, non-volatile Flash program memory, RAM, EEPROM, and peripherals onto one die. Within the broader taxonomy it sits as: 8-bit MCU -> microcontroller -> embedded controller -> semiconductor IC. The PIC16F family specifically uses a RISC-style Harvard architecture with only 35 single-word instructions, making it friendly for assembly and C development in embedded systems. Key features include 5 channels of 10-bit Analog-to-Digital conversion, USART, MSSP (SPI/I2C) interface, two 8-bit timers plus one 16-bit timer, a 10-bit PWM module with Capture/Compare/PWM (CCP), and NanoWatt power management for low-current sleep modes. Watchdog timer, in-circuit serial programming (ICSP), and brown-out reset (BOR) round out the standard embedded feature set. The PIC16F874 uses a 14-bit instruction word with 200ns instruction execution at 20MHz, plus separate instruction and data buses (Harvard). The CMOS Flash cell supports >100k erase/write cycles and 40-year retention, qualifying it for industrial embedded products requiring long field life. Typical applications include industrial control panels, HVAC thermostats, sensor signal conditioning, motor control boards, and small appliances. The 40-pin DIP package suits through-hole prototyping and legacy board retrofits where socket replacement is desirable. When designing with the PIC16F874-20/P, observe the 4.0V to 5.5V supply range. For new designs, Microchip recommends the PIC16F884 (NanoWatt enhanced, more memory). For this page we synthesized distributor pricing, drop-in alternatives sharing the 40-pin DIP footprint, and design notes not present in the manufacturer datasheet alone.

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PIC16F874-20/PQ - 8-Bit 20MHz 7KB Flash MCU, 44-MQFP | Microchip
PIC16F874-20/PQ

PIC16F874-20/PQ - 8-Bit 20MHz 7KB Flash MCU, 44-MQFP | Microchip

The Microchip Technology PIC16F874-20/PQ is an 8-bit CMOS FLASH-based microcontroller in the PIC16F mid-range family, executing instructions at 20 MHz with a 200 ns instruction cycle. It integrates 7 KB (4K x 14) of FLASH program memory, 192 bytes of SRAM data memory, and 128 bytes of EEPROM in a 44-pin MQFP (PQ) package rated for the commercial 0C to +70C temperature range. The PQ suffix specifically denotes the Metric Quad Flat Pack with 10 mm x 10 mm body and 0.80 mm lead pitch, gull-wing SMT terminations. A microcontroller (MCU) is a single-chip computer containing a CPU, non-volatile program memory, working RAM, and integrated peripherals such as timers, ADC, and communication interfaces. The PIC16F family sits within Microchip's 8-bit mid-range architecture portfolio, which targets cost-sensitive embedded control. Within that hierarchy, the PIC16F874 occupies the upper-memory position, distinguished from siblings by its richer peripheral set: a 10-bit ADC with up to 8 channels, two capture/compare/PWM modules, a USART, an MSSP (SPI/I2C) port, and a Parallel Slave Port. These capabilities place it above the PIC16F873 (28/40-pin, 7 KB flash) as the 40/44-pin version, and below the PIC16F876 family (28/40-pin, 14 KB flash) which doubles program memory. Key features include 33 digital I/O pins, an instruction set of only 35 single-word instructions, an internal oscillator option on related family members, and a programmable code-protection scheme. The Harvard bus architecture separates program and data paths to allow simultaneous fetch and access, simplifying deterministic real-time control loops. The device supports in-circuit serial programming (ICSP) via two pins, eliminating the need for an external programmer socket in production. Typical applications include industrial control panels, motor drive front-ends, instrumentation front-ends, low-cost data loggers, and consumer appliance controllers. The 10-bit ADC and PWM channels enable direct interface with analog sensors and brushed DC or stepper actuator stages without external glue logic. The PQ package suits industrial control boards where moderate thermal dissipation is acceptable and where through-hole pin access (DIP/PLCC alternatives) is not required. Design consideration: the PIC16F874 has been marked by Microchip as legacy; new designs are directed to the PIC16F884 (more memory, same PQ footprint option). Engineers designing new products should evaluate the PIC16F884 migration path before committing board layout, while existing designs can continue to source the PIC16F874-20/PQ through distribution channels. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone. It cross-references parametric data with the 44-pin MQFP footprint so engineers can quickly identify pin-compatible replacements and migration candidates within the Microchip mid-range family.

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PIC16F874A-E/L - 8-bit 20MHz 7KB Flash MCU | Microchip | PLCC-44
PIC16F874A-E/L

PIC16F874A-E/L - 8-bit 20MHz 7KB Flash MCU | Microchip | PLCC-44

The Microchip Technology PIC16F874A-E/L is a CMOS Flash-based 8-bit microcontroller built on the powerful PIC16 RISC architecture, executing instructions in 200 ns and offering 7 KB of self-programming Flash program memory, 192 bytes of RAM, and 128 bytes of EEPROM data memory in a 44-pin PLCC (L) package. It integrates 33 digital I/O lines, two 8-bit timers plus one 16-bit timer, two analog comparators, a 10-bit 8-channel Analog-to-Digital Converter (ADC), two Capture/Compare/PWM (CCP) modules, and a Synchronous Serial Port configurable as either 3-wire SPI or 2-wire I²C, along with a USART for asynchronous serial communication. A microcontroller (MCU) is a single-chip computer that integrates a CPU, memory, and peripherals. Within the semiconductor taxonomy, the PIC16F874A belongs to the 8-bit microcontroller family, which sits inside the broader mid-range PIC16 sub-family. The 'F' prefix denotes Flash program memory, 'A' indicates the enhanced flash generation, '874A' identifies the specific part with 7 KB Flash / 192 B RAM / 128 B EEPROM, and the 'E' suffix denotes the extended industrial temperature grade (-40°C to +125°C). The 'L' package code designates a 44-lead PLCC. Key differentiating features include nanoWatt Technology for power-managed sleep modes, an ICD (In-Circuit Debug) interface, and 20 MHz operation from a 4.0 V to 5.5 V supply. The 10-bit ADC supports 8 input channels at up to approximately 12-15 ksps, while the CCP modules deliver 10-bit PWM resolution suitable for motor, lighting, and analog control loops. Internal RC oscillator options reduce BOM cost when precision is not required. Typical applications include industrial sensor conditioning, motor control, low-end human-machine interfaces, automotive body modules, and educational/development platforms. The wide operating temperature range and 33 I/O make it well suited for distributed embedded nodes in factory automation. When designing with this part, ensure the MCLR reset circuit uses the proper pull-up topology and that the configuration word (oscillator, watchdog, brown-out, code protection) is set before code execution. Decouple VDD with 100 nF ceramic capacitors placed within 5 mm of each power pin, and respect the 5.5 V absolute maximum supply rating.

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PIC16F874A-E/ML - 8-Bit 20MHz 7KB FLASH MCU | Microchip
PIC16F874A-E/ML

PIC16F874A-E/ML - 8-Bit 20MHz 7KB FLASH MCU | Microchip

The Microchip Technology PIC16F874A-E/ML is a CMOS flash-based 8-bit microcontroller from the PIC16F family, delivering 20 MIPS performance (200 ns instruction cycle) and packaged in a 44-pin VQFN (8x8 mm) with an exposed thermal pad. It integrates 7KB of self-programmable FLASH program memory (4K x 14 words), 192 bytes of RAM, and 128 bytes of EEPROM data memory, plus 33 digital I/O pins operating across 2.0V to 5.5V with a 20 MHz external oscillator. A microcontroller (MCU) is a single-chip computer containing a CPU, RAM, non-volatile program memory, and peripheral set. Within the hierarchy, the PIC16F874A belongs to the 8-bit microcontroller family, which sits within microcontrollers, then embedded computing, then integrated circuits. Its Enhanced FLASH, 14-bit instruction-word architecture distinguishes it from baseline PIC16C/16F devices by adding self-programmability, in-circuit debugging (ICD), and an extended peripheral mix without raising cost. Key features include an 8-channel, 10-bit Analog-to-Digital converter with up to 8 analog channels, two analog comparators, two Capture/Compare/PWM (CCP) modules, a configurable synchronous serial port usable as either 3-wire SPI or 2-wire I2C, a USART for asynchronous or synchronous serial communication, a parallel slave port, and a 14-bit instruction set with only 35 single-word instructions. The 44-VQFN exposed pad package supports surface-mount designs that benefit from a low thermal resistance path through the bottom pad. Architecturally, the PIC16F874A uses a Harvard-style RISC core with separate program and data buses, a 14-bit wide program path, and a 8-bit data path. Self-programmability allows in-application firmware updates using a bootloader in FLASH. The MSSP (Master Synchronous Serial Port) and USART hardware blocks are mapped to dedicated pins, while the ADC uses a shared analog input multiplexer so conversions are software-scheduled across channels. Typical applications include industrial control, sensor signal conditioning, low-cost instrumentation, motor control PWM drivers, and embedded consumer devices. The wide operating voltage (2.0V to 5.5V) and industrial temperature grade (-40C to +125C for the E suffix) make it well-suited to factory automation and automotive interior subsystems. When designing with this part, pay attention to the configuration word (oscillator selection, watchdog, code protection), use the exposed pad for thermal relief and ground stitching, and program the FLASH via ICSP using the dedicated PGD/PGC pins. The 8x8 mm VQFN footprint requires a moderate PCB land pattern; verify the I/O count (33) against your application's pin budget.

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PIC16F874A-E/P - 8-Bit 20MHz 7KB Flash MCU 40-PDIP | Microchip
PIC16F874A-E/P

PIC16F874A-E/P - 8-Bit 20MHz 7KB Flash MCU 40-PDIP | Microchip

The Microchip Technology PIC16F874A-E/P is an 8-bit PIC16 family microcontroller (MCU) based on the enhanced mid-range RISC architecture, delivering 20 MHz maximum clock speed, 7 KB (4K x 14) of self-programmable Flash program memory, 192 bytes of RAM, and 128 bytes of EEPROM data memory in a 40-pin PDIP through-hole package. It integrates 33 digital I/O pins, an 8-channel 10-bit Analog-to-Digital Converter (ADC), two analog comparators, two Capture/Compare/PWM (CCP) peripherals, an ICD debug port, and a synchronous serial port configurable as either 3-wire SPI or 2-wire I²C. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, memory, and peripherals on one die. 8-bit MCUs sit within the taxonomy: microcontroller -> embedded computing -> semiconductor IC. The PIC16F family is Microchip's enhanced mid-range 8-bit line, optimized for low-cost, low-power deterministic control in industrial, consumer, and automotive subsystems. A 40-pin PDIP package provides breadboard-friendly through-hole mounting, the dominant form factor for legacy and educational designs. Key features include nanoWatt power management for reduced active and sleep currents, a wide 4.0 V to 5.5 V supply range, an ICD (In-Circuit Debugger) interface, code protection, and a 200 ns instruction cycle at 20 MHz. The PIC16F874A-E/P supports both internal and external oscillator modes and includes a programmable brown-out reset. The PIC16F874A-E/P uses a Harvard RISC architecture with separate program and data buses, allowing instruction fetch and data access in a single cycle. Its 14-bit instruction word delivers compact code density. On-chip peripherals are mapped to dedicated I/O pins, simplifying PCB routing while the nanoWatt technology minimizes sleep current to support battery-backed designs. Typical applications include industrial control systems, HVAC sensor interfaces, automotive body electronics, embedded instrumentation, security and alarm panels, and consumer appliance controllers. The 8-channel 10-bit ADC is suitable for slow-speed analog monitoring such as temperature, light, or battery voltage. When designing with this device, ensure the MCLR pin is pulled high through a resistor for proper reset behavior and place a 100 nF decoupling capacitor close to VDD. Choose the internal oscillator block to minimize external component count when timing accuracy is non-critical. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

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