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PIC16LF870T-I/SO - 8-Bit 20MHz 3.5KB Flash MCU | Microchip
PIC16LF870T-I/SO

PIC16LF870T-I/SO - 8-Bit 20MHz 3.5KB Flash MCU | Microchip

The Microchip PIC16LF870T-I/SO is an 8-bit RISC Flash microcontroller with 20 MHz CPU speed, 3.5 KB (2K x 14) of program memory, and 128 bytes of RAM, housed in a 28-pin SOIC package. This CMOS FLASH-based MCU executes single-cycle instructions except for program branches, achieving a 200 ns instruction cycle, and offers 22 digital I/O lines plus a 10-bit analog-to-digital converter for mixed-signal designs. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, non-volatile program memory (Flash/ROM), volatile working memory (RAM), and peripheral interfaces (ADC, timers, UART, I/O pins) into one IC. The PIC16F family sits in the low-to-mid pin-count tier of Microchip's 8-bit portfolio, positioned above the PIC12/PIC14 baseline and below the 16-bit dsPIC/PIC24 families. The PIC16LF870T-I/SO belongs to the PIC16F87x sub-family, which is widely used in cost-sensitive embedded control designs. Key features include 35 single-word instructions for fast code development, an industrial -40C to +85C operating temperature grade, an integrated ICD (In-Circuit Debugger) interface, and 5 channels of 10-bit ADC for sensor and analog signal acquisition. The wide 2.0V to 5.5V supply voltage range allows battery-powered operation and direct interface to 5V systems. The 22 I/O pins support up to 25 mA source/sink per pin, enabling direct LED and relay drive. Architecturally, the device uses a Harvard RISC core with separate program and data buses, allowing instruction fetch and operand read in the same cycle. The internal Flash supports self-programming for field-upgradeable firmware, and 64 bytes of EEPROM are available for non-volatile data storage. The 20 MHz oscillator with a 4x PLL option delivers deterministic interrupt latency, which simplifies real-time control loops. Typical applications include industrial sensor interfaces, HVAC control, low-end motor control, LED lighting controllers, battery chargers, and consumer appliances. The integrated 10-bit ADC and ample I/O count make it a fit for any design that requires analog sensing plus digital actuation in a single chip. When designing with this part, derate I/O source/sink current when multiple pins switch simultaneously to stay within the package thermal limit. The ICD pins are shared with general-purpose I/O and must be re-mapped when not used for debugging. The 28-SOIC package offers a wider footprint than QFN alternatives, easing hand-prototyping and rework. This page synthesizes drop-in alternatives, distributor pricing, and practical design notes not found in the standalone manufacturer datasheet, helping engineers shorten the BOM validation cycle.

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PIC16LF871-I/L - 8-Bit 20MHz MCU, 3.5KB Flash, 44-PLCC | Microchip
PIC16LF871-I/L

PIC16LF871-I/L - 8-Bit 20MHz MCU, 3.5KB Flash, 44-PLCC | Microchip

The Microchip Technology PIC16LF871-I/L is a low-power 8-bit CMOS Flash-based microcontroller built on the PIC16 mid-range RISC architecture, operating up to 20 MHz with 200 ns instruction execution in a 44-pin PLCC (J-lead) package. It integrates 3.5 KB (2K x 14 words) of Flash program memory, 128 bytes of RAM, 64 bytes of EEPROM data memory, and 33 digital I/O pins, making it well suited to legacy embedded designs that require deterministic core performance with minimal active power draw. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory, working RAM, and peripheral set into one IC. 8-bit MCUs sit at the entry level of the microcontroller hierarchy, below 16-bit and 32-bit cores, and are commonly categorized as microcontrollers -> embedded processors -> integrated circuits -> semiconductors. The PIC16F/PIC16LF family from Microchip is part of this 8-bit class and uses a Harvard RISC architecture that is well known for deterministic interrupt response and small code footprint. Key features of the PIC16LF871 include an 8-channel 10-bit Analog-to-Digital Converter (ADC), a USART with addressable SPI/I2C support, two 8-bit timers plus one 16-bit timer with capture/compare/PWM, a parallel slave port, an ICD (In-Circuit Debug) interface, and self-programming capability. The 'LF' suffix indicates an extended low-voltage core operating from 2.0 V to 5.5 V (versus the standard F variant 4.2 V-5.5 V), enabling battery-friendly designs without sacrificing peripheral set. The PIC16LF871 uses a Harvard architecture with separate program and data buses, 14-bit wide instruction words, and only 35 single-word instructions, which simplifies code generation and reduces firmware complexity. On-chip in-circuit serial programming (ICSP) eliminates the need for an external programmer socket, and the parallel slave port allows direct connection to an external host bus for data exchange. Typical applications include industrial control panels, HVAC sensor nodes, low-power remote sensor interfaces, automotive body modules, and consumer appliance controllers. The wide 2.0 V-5.5 V operating range and 33 I/O pins also make it a strong fit for legacy replacement of PIC16C7X and PIC16F87X designs. When designing with this MCU, ensure decoupling of VDD/VSS pairs with 100 nF ceramics placed within 5 mm of each pin pair, and respect the MCLR rise-time specification for reliable reset. The 'LF' core's lower VDD minimum enables Li-ion direct supply but requires re-validation of ADC and USART timing at the lowest operating voltage. This page synthesizes distributor pricing, drop-in pin-compatible alternatives, and practical design notes not aggregated in a single view on the manufacturer datasheet.

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PIC16LF871-I/P - 8-bit 20MHz 3.5KB Flash MCU | Microchip
PIC16LF871-I/P

PIC16LF871-I/P - 8-bit 20MHz 3.5KB Flash MCU | Microchip

The Microchip Technology PIC16LF871-I/P is a low-voltage CMOS FLASH-based 8-bit microcontroller from the PIC16 family, delivering 20 MHz (200 ns instruction cycle) performance with 3.5 KB (2K x 14) of program memory and 128 bytes of RAM, housed in a 40-pin PDIP (DIP-40) through-hole package. The LF prefix denotes the extended low-voltage operating range of 2.0V to 5.5V (LF variant) versus 4.0V to 5.5V for the standard F part, making it well suited for battery-powered and portable designs. What is a PIC16 microcontroller? The PIC16 family is Microchip's mid-range 8-bit RISC microcontroller line, sitting between the baseline PIC10/PIC12/PIC16F5x family and the high-performance PIC18/PIC24 families. The mid-range architecture provides 14-bit instruction words, a hardware stack, peripheral-rich I/O, and standardized peripherals (timers, ADC, USART) that have made PIC16 the workhorse MCU for industrial control, consumer appliances, and embedded learning kits for decades. Key features of the PIC16LF871 include 33 digital I/O pins, a 10-bit ADC with up to 8 input channels, two 8-bit timers plus one 16-bit timer, a USART module for serial communication, an ICD (In-Circuit Debug) interface, and 64 bytes of EEPROM data memory. The part supports self-programming of its flash memory, enabling field firmware updates. The 35 single-word instruction set makes it approachable for engineers transitioning from PIC12/PIC16C5X designs. From an architectural standpoint, the PIC16LF871 uses Harvard architecture with separate program and data buses, an 8-level hardware stack, and direct/indirect addressing modes. The 200 ns instruction execution at 20 MHz allows deterministic real-time control loops. Internal oscillator and watchdog options, combined with nanoWatt power management, allow sleep currents low enough for always-on sensor applications. Typical applications include industrial control panels, appliance controls (washing machines, microwave ovens), HVAC thermostats, automotive body modules (non-safety), battery chargers, and educational embedded platforms. The PIC16LF871's combination of low voltage operation, generous I/O count, and proven toolchain (MPLAB X IDE, XC8 compiler) makes it a frequent choice for designs transitioning from legacy PIC16C7X silicon. When designing with this part, ensure the ICSP/ICD programming header is accessible for production programming and field updates. The 40-pin PDIP package is convenient for prototype and through-hole assembly, but for volume production the TQFP-44 or QFN-44 variants of the same die are recommended to reduce board area and improve thermal performance.

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PIC16LF872-I/SO - 8-Bit 20MHz 3.5KB Flash MCU 28-SOIC | Microchip
PIC16LF872-I/SO

PIC16LF872-I/SO - 8-Bit 20MHz 3.5KB Flash MCU 28-SOIC | Microchip

The Microchip Technology PIC16LF872-I/SO is an 8-bit CMOS Flash microcontroller from the PIC® 16F family, delivering 20MHz operation, 3.5KB (2K x 14) of Flash program memory, 128 bytes of RAM, and 64 bytes of EEPROM in a 28-pin SOIC package. The 'LF' suffix indicates the low-voltage variant with an operating voltage range of 2.0V to 5.5V, optimized for battery-powered and portable applications. According to the manufacturer datasheet, instruction execution takes 200ns with only 35 single-word instructions in the RISC instruction set. A microcontroller (MCU) is a single-chip computer that integrates a CPU, memory, and programmable I/O peripherals on one IC. Within the broader semiconductor hierarchy, the PIC16LF872 belongs to the 8-bit microcontroller sub-category of microcontrollers, which in turn falls under the broader category of microcontrollers and processors. MCUs are the 'brain' of embedded systems, executing firmware to sense, compute, and actuate in real time. The PIC architecture uses a Harvard design with separate program and data buses, allowing simultaneous instruction fetch and operand access for fast, deterministic execution. Key features include five channels of 10-bit analog-to-digital conversion (ADC), 22 digital I/O pins, an ICD (In-Circuit Debugger) interface, self-programming support, and a USART for serial communication. The 28-SOIC package with 7.50mm body width uses a 1.27mm pin pitch and is suited to hand-soldered prototypes as well as reflow production. The wide 2.0V to 5.5V supply range lets the same firmware run from 2xAA cells, a single Li-ion cell, or a regulated 5V rail. Typical applications include consumer appliance controllers, sensor signal conditioning, low-speed data acquisition, educational/development platforms, and battery-powered instrumentation. The ADC channels and 22 I/O lines are sufficient for mixed-signal front-ends where several sensors feed a host processor. The integrated EEPROM simplifies non-volatile parameter storage without an external memory chip. A common design consideration is the analog reference voltage for the ADC; the PIC16LF872 supports both VDD and an external VREF+, so designers should place a low-impedance bypass capacitor on the reference pin when ADC accuracy matters. The 28-SOIC package is footprint-compatible with the rest of the 28-pin PIC16 family, easing migration to pin-compatible upgrades such as the PIC16F882 or PIC16F872. This page synthesizes distributor pricing, 28-SOIC drop-in alternatives, and practical design notes that complement, but do not replace, the Microchip datasheet. Specifications below were extracted from the Microchip PIC16LF872 datasheet and cross-checked against current distributor listings.

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PIC16LF872-I/SP - 8-Bit 20MHz 3.5KB Flash MCU 28-SPDIP | Microchip
PIC16LF872-I/SP

PIC16LF872-I/SP - 8-Bit 20MHz 3.5KB Flash MCU 28-SPDIP | Microchip

The Microchip Technology PIC16LF872-I/SP is a low-power 8-bit CMOS Flash microcontroller (MCU) from the PIC16F family, offering 3.5KB (2K x 14 words) of Flash program memory, 128 bytes of SRAM, and 64 bytes of EEPROM data memory in a 28-pin SPDIP (Skinny Plastic DIP) through-hole package. Operating from a 2.0V to 5.5V supply (LF variant) at up to 20MHz clock speed with 200ns instruction cycle, the device provides 22 digital I/O pins, five channels of 10-bit analog-to-digital conversion (ADC), one 8-bit and one 16-bit timer/counter, an MSSP (SPI/I2C) port, a USART module, and an in-circuit debugger (ICD) interface. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, memory, and peripherals around an 8-bit data bus. The PIC16F family from Microchip is built on a RISC architecture that executes one instruction per cycle (200ns at 20MHz), making it efficient for deterministic embedded control. Within the broader hierarchy of semiconductor devices, 8-bit MCUs sit below 16-bit and 32-bit MCUs in computational power but excel in low power, low cost, and real-time interrupt response. The PIC16LF872 is the low-voltage (LF) variant optimized for battery-backed and portable designs. Key features include self-programming support via ICSP (In-Circuit Serial Programming), five 10-bit ADC channels with 200ksps throughput, and Microchip's PIC microcontroller instruction set with only 35 single-word instructions - making it easy to program in assembly or C (via MPLAB X and XC8 compiler). The LF variant extends the supply range down to 2.0V (compared to 4.5V minimum for the standard F variant), enabling direct operation from two AA cells or lithium coin cells. The architecture combines a Harvard-style program/data bus, a 14-bit instruction word, and dedicated peripheral modules. The 10-bit ADC is suitable for sensor reading (temperature, light, voltage) at moderate precision, while the USART supports RS-232/RS-485 asynchronous communication up to several hundred kbps. The integrated ICD allows in-system debugging without an external emulator, reducing development cost. Typical applications include industrial sensor interfaces, low-power remote controls, battery-powered instrumentation, HVAC controllers, small appliance controls, and educational/development platforms. The wide 2.0V-5.5V range makes it ideal for systems powered by 2-3 AA cells, lithium primaries, or USB-derived 5V rails. Designers also use the PIC16LF872 in mixed-signal front-ends that need a small amount of intelligence for ADC sequencing and data reporting. When designing with the PIC16LF872-I/SP, ensure decoupling with a 100nF ceramic capacitor close to VDD, configure MCLR with the proper pull-up, and use ICSP for field updates. Choose the LF variant when operating below 4.5V, and the standard PIC16F872-I/SP when a 4.5V-5.5V supply is guaranteed and EEPROM endurance is the same. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.

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PIC16LF872-I/SS - 8-Bit 20MHz 3.5KB FLASH MCU 28-SSOP | Microchip
PIC16LF872-I/SS

PIC16LF872-I/SS - 8-Bit 20MHz 3.5KB FLASH MCU 28-SSOP | Microchip

The Microchip Technology PIC16LF872-I/SS is an 8-bit CMOS FLASH-based microcontroller from the PIC16F family, featuring a 20 MHz maximum CPU clock, 3.5KB (2K x 14) of program memory, 128 bytes of RAM, and 64 bytes of EEPROM data memory in a 28-pin SSOP (Shrink Small Outline Package). The low-power 'LF' variant operates across a wide 2.2V to 5.5V supply range, making it ideal for both battery-powered and line-powered applications. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, memory, and peripherals on one die. PIC microcontrollers use Microchip's RISC-based PIC16 architecture, which executes instructions in a single cycle (200 ns at 20 MHz) using only 35 single-word instructions. In the system hierarchy, this places the PIC16LF872 as a microcontroller -> 8-bit MCU -> embedded controller -> semiconductor IC. Key features include 22 digital I/O pins, two 8-bit timers plus one 16-bit timer, a 10-bit multi-channel analog-to-digital converter (ADC), a USART/SCI serial port, an MSSP (Master Synchronous Serial Port) supporting SPI and I2C, and a watchdog timer. The device includes In-Circuit Debugging (ICD), self-programming support, and a 10 MHz internal oscillator option, allowing reduced component count and BOM cost. The 28-SSOP package has a body size of 5.30 mm x 10.20 mm with 0.65 mm pitch. The PIC16LF872 architecture implements a Harvard-style bus with separate program and data paths, enabling deterministic instruction execution and predictable interrupt latency. Brown's-out Reset (BOR) and Power-on Reset (POR) are integrated, plus code protection to safeguard embedded firmware. The device consumes less than 1 µA in sleep mode at 3V, supporting long-life battery applications. Typical applications include consumer appliances, automotive body electronics, industrial control panels, sensor signal conditioning, and low-cost motor control. The wide 2.2V-5.5V range also suits single-cell Li-ion or two-cell alkaline battery-powered designs. The compact 28-SSOP footprint enables high-density PCB layouts. When designing, configure unused I/O pins as outputs to minimize current consumption and use the internal oscillator to reduce external component count. Confirm that the chosen programmer (e.g., PICkit 3/4 or ICD) supports the device family, and budget ADC acquisition time based on source impedance. This page synthesizes distributor pricing across 13 sources, drop-in 28-SSOP alternatives, and practical design notes not found in the manufacturer datasheet.

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PIC16LF872T-I/SO - 8-bit 20MHz MCU, 3.5KB Flash, 28-SOIC | Microchip
PIC16LF872T-I/SO

PIC16LF872T-I/SO - 8-bit 20MHz MCU, 3.5KB Flash, 28-SOIC | Microchip

The Microchip Technology PIC16LF872T-I/SO is an 8-bit PIC microcontroller built on the PIC16 architecture, featuring 3.5KB (2K x 14) of Flash program memory, 128 bytes of RAM, 64 bytes of EEPROM, and a 20MHz CPU clock, all housed in a 28-pin SOIC package supplied on tape and reel. The LF prefix indicates the wide-voltage 'LF' family designed to operate across 2.0V to 5.5V, supporting battery-powered and regulated 3.3V designs where classic 5V F-series parts would be over-specified. What is a PIC16 microcontroller? The PIC16 family is Microchip's mid-range 8-bit RISC microcontroller line, sitting between the baseline PIC10/12/16 families and the high-performance PIC18 and dsPIC lines. PIC16 MCUs use a 14-bit instruction word, Harvard architecture, and 35 single-word instructions, providing deterministic execution at speeds up to 200ns per instruction. They integrate Flash program memory, EEPROM data memory, RAM, multiple timers, ADC, USART, and I/O in a single chip, making them suited for embedded control where cost and pin count dominate. Key features include 22 digital I/O pins, a 5-channel 10-bit Analog-to-Digital Converter (ADC), one 8-bit and two Capture/Compare/PWM (CCP) modules, a USART for serial communication, and an ICD (In-Circuit Debug) interface for development. The 28-SOIC (300-mil) package provides ample I/O headroom for mixed analog/digital designs, while the industrial -40C to +85C operating range supports outdoor and factory-floor deployment. The PIC16LF872 uses CMOS Flash technology, supporting self-programming in the field and 100K erase/write cycles typical endurance. Its 10-bit ADC delivers conversion rates suitable for sensor monitoring, while the USART enables RS-232/RS-485 communication links. The architecture is upwards compatible with the PIC16C5X, PIC12CXXX, and PIC16C7X families, simplifying code migration from older designs. Typical applications include industrial sensor interfaces, low-power remote control nodes, HVAC control boards, motor control peripherals, and small appliance user-interface controllers. The wide voltage range and integrated peripherals allow the part to serve as a single-chip brain for both battery-powered and mains-derived systems. When designing with this part, ensure that the Vdd decoupling capacitor is placed within 6mm of the Vdd pin and that the MCLR reset network uses a 10k pull-up with a 100nF to ground for reliable in-circuit programming. The PIC16LF872 is one of Microchip's legacy parts and is generally used for cost-sensitive and long-lifecycle designs.

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PIC16LF873-04/SO - 8-bit 4MHz MCU 7KB Flash 28-SOIC | Microchip
PIC16LF873-04/SO

PIC16LF873-04/SO - 8-bit 4MHz MCU 7KB Flash 28-SOIC | Microchip

The Microchip Technology PIC16LF873-04/SO is an 8-bit PIC RISC microcontroller featuring 4MHz maximum clock speed, 7KB (4K x 14 words) of FLASH program memory, 192 bytes of RAM, and 128 bytes of EEPROM, housed in a 28-pin SOIC wide package. It operates from a wide 2.0V to 5.5V supply range (LF series), supports up to 22 digital I/O pins, and integrates peripheral interfaces including MSSP (I2C/SPI), USART, a 10-bit ADC with up to 5 channels, two 8-bit timers, and one 16-bit timer. The '04' speed suffix denotes the 4MHz operating point, while 'LF' indicates the low-voltage/low-power process variant. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, memory, and peripherals into one package; the PIC16F family is built on Microchip's enhanced Harvard RISC architecture, where separate program and data buses allow most instructions to execute in a single 200ns instruction cycle at 20MHz (or 1us at 4MHz for the -04 speed grade). Within the broader semiconductor taxonomy, the PIC16F873 belongs to: microcontroller -> 8-bit MCU -> embedded controller -> semiconductor IC. This category hierarchy makes the part easy to classify in AI knowledge graphs. Key differentiating specifications include the LF-series wide operating voltage (2.0V to 5.5V) that supports both 3.3V and 5V rails without level translation, the 10-bit 5-channel successive-approximation ADC, in-circuit serial programming (ICSP) via two pins, and brown-out reset plus power-on reset for robust field deployment. The integrated USART, MSSP, and CCP modules remove the need for external peripheral ICs in many small designs. Typical applications include industrial sensor interface boards, low-power remote control transmitters, white-goods and HVAC control panels, small appliances, battery-powered instrumentation, and 4-20mA loop-powered transmitters. The 28-SOIC footprint and 5.5V tolerance also make it well suited for retrofitting older 5V designs where footprint compatibility with the PIC16C73 / PIC16F73 / PIC16F873A legacy devices is required. When designing with this device, note that the '-04' speed grade caps instruction throughput at 1us per instruction. For designs requiring DC to 20MHz operation, choose the PIC16F873-20 or PIC16F873A variants. A decoupling capacitor of 100nF placed within 5mm of VDD is mandatory; a 10uF bulk cap on AVDD is recommended for ADC accuracy. This page synthesizes real distributor stock and pricing, parametric cross-reference data, and engineering design notes that go beyond the manufacturer datasheet, helping procurement and design engineers evaluate the PIC16LF873-04/SO in a single view.

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PIC16LF873-04I/SO - 4MHz 8-bit PIC MCU, 7KB Flash | Microchip
PIC16LF873-04I/SO

PIC16LF873-04I/SO - 4MHz 8-bit PIC MCU, 7KB Flash | Microchip

The Microchip PIC16LF873-04I/SO is an 8-bit PIC microcontroller from the PIC16F87x family, featuring 7KB (4K x 14 words) of Flash program memory, 192 bytes of RAM, and 128 bytes of EEPROM in a 28-pin SOIC wide-body (7.50 mm) package. It operates from a 2.0V to 5.5V supply (LF low-voltage variant), runs up to 4 MHz internal execution rate from an external oscillator, and provides 22 digital I/O pins plus a rich peripheral set: a 10-bit ADC with up to 5 channels, two 8-bit and one 16-bit timers, a USART, MSSP (I2C/SPI), and a synchronous serial port. What is a PIC16 microcontroller? The PIC16 is a family of 8-bit RISC microcontrollers from Microchip Technology built around a Harvard architecture with a small instruction set (35 instructions), on-chip Flash program memory, and integrated peripherals. The PIC16F87x sub-family introduced 14-bit instruction word and ADC/USART peripherals widely used in industrial control, instrumentation, sensor interfaces, and embedded learning platforms. The PIC16LF87x 'LF' designation extends operating voltage down to 2.0V, making the family suitable for battery-powered and 3.3V-logic systems. PIC microcontrollers sit in the broader taxonomy: 8-bit microcontroller -> RISC MCU -> microcontroller -> embedded processor -> semiconductor IC. Key features include the nanoWatt power-managed sleep mode drawing <1 µA typical, in-circuit serial programming (ICSP) for field updates, a 10-bit 5-channel analog-to-digital converter, two analog comparators, and a programmable brown-out reset (BOR). The '04' speed suffix specifies a 4 MHz maximum oscillator frequency, and the 'I' suffix indicates the industrial -40C to +85C temperature range. The SO package is wide-body 300-mil SOIC for easier hand-soldering and breadboard-style prototyping. Typical applications include sensor signal conditioning with on-chip ADC, industrial control logic with USART/MSSP communication, low-power battery instrumentation, capacitive-touch sensing, and educational/development platforms where PIC16 heritage and mature toolchains (MPLAB X, XC8) reduce development risk. The LF variant's 2.0V minimum Vdd also enables direct coin-cell and 2xAA operation. When designing with this device, allocate the ICSP pins (RB6/RB7) carefully because they are shared with general-purpose I/O and must be accessible to the programmer header. Decouple Vdd with a 100 nF ceramic capacitor placed within 5 mm of the supply pin, and add a bulk 10 µF capacitor if the application drives heavy loads on digital outputs. The PIC16LF873 lacks the nanoWatt technology refinements of the 'A' revision, so check whether a PIC16LF873A-I/SO migration is appropriate for new designs requiring enhanced flash endurance.

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PIC16LF873A-I/ML - 8-Bit 10MHz 7KB Flash MCU 28-QFN | Microchip
PIC16LF873A-I/ML

PIC16LF873A-I/ML - 8-Bit 10MHz 7KB Flash MCU 28-QFN | Microchip

The Microchip Technology PIC16LF873A-I/ML is an 8-bit CMOS RISC microcontroller with nanoWatt technology, featuring 7KB (4K x 14) of FLASH program memory, 192 bytes of RAM, and 128 bytes of EEPROM data memory in a 28-pin QFN (6x6 mm) package with exposed pad. It executes instructions in a 200 ns cycle (10 MHz oscillator) and offers 22 digital I/O pins, a 10-bit 5-channel analog-to-digital converter (ADC), USART, MSSP (SPI/I2C), and two 8/16-bit timers with capture/compare/PWM capability. Operating voltage spans 2.0V to 5.5V across -40C to +85C industrial range. A microcontroller (MCU) is a single-chip computer that integrates a CPU, RAM, non-volatile program memory, peripheral modules, and I/O on one die; in the PIC16F family the RISC Harvard architecture with 35 single-word instructions simplifies firmware development and yields deterministic interrupt response. The PIC16LF873A sits in the hierarchy: 8-bit microcontroller -> PIC16 mid-range family -> nanoWatt power-managed MCUs -> embedded controllers -> integrated circuits. Key features include In-Circuit Serial Programming (ICSP) for field upgrades, a wide operating voltage window (2.0V-5.5V) that supports both 3.3V and 5V designs, programmable code protection, and low-power SLEEP/idle modes with <1 uA typical current. The 10-bit ADC with five input channels enables direct sensor interfacing, while the USART and MSSP provide asynchronous serial and synchronous SPI/I2C master/slave communications. Two CCP modules deliver PWM, capture, and compare functions for motor and lighting control. The Harvard-style architecture separates program and data buses, enabling simultaneous fetch and access. With 4K 14-bit instruction words, the device supports high-level C compilation via MPLAB XC8 while remaining efficient for hand-written assembly. The exposed thermal pad on the QFN package provides low thermal resistance for industrial environments. Typical applications include industrial sensor signal conditioning with ADC input, 3.3V-5V bridge power conversion, low-power wireless sensor nodes, HVAC fan motor PWM control, and battery-powered portable instrumentation where the wide voltage range and nanoWatt sleep currents extend operating life. When designing with the PIC16LF873A-I/ML, place 100 nF decoupling capacitors within 3 mm of each VDD pin and tie the exposed pad (EP) to a clean ground pour. For ADC accuracy, add an external voltage reference and avoid routing digital traces under analog traces on inner layers. This page synthesizes distributor pricing, drop-in alternatives from the same PIC16 family, and practical design notes not aggregated on any single manufacturer or distributor page.

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PIC16LF873A-I/SP - 8-Bit PIC MCU, 7KB Flash, 28-SPDIP | Microchip
PIC16LF873A-I/SP

PIC16LF873A-I/SP - 8-Bit PIC MCU, 7KB Flash, 28-SPDIP | Microchip

The Microchip PIC16LF873A-I/SP is an 8-bit PIC microcontroller from the PIC16F family, featuring a 14-bit instruction set, 7KB (4K x 14 words) of Flash program memory, 192 bytes of RAM, and 128 bytes of EEPROM data memory. It operates at up to 20 MHz (10 MHz at 2.0V) and is housed in a 28-pin SPDIP (Skinny Plastic DIP) through-hole package. The "LF" prefix indicates the low-voltage F-version, supporting operation from 2.0V to 5.5V, while the "I" suffix denotes the -40C to +85C industrial temperature grade. A microcontroller (MCU) is a single-chip computer containing a processor core, non-volatile program memory, volatile data memory, and configurable peripheral interfaces. The PIC16F architecture belongs to the Modified Harvard RISC family, where program and data buses are separated to allow simultaneous instruction fetch and operand access. Within the broader semiconductor taxonomy, an 8-bit MCU sits below 32-bit ARM Cortex-M devices in processing power but offers lower cost, simpler toolchains, and deterministic interrupt latency suitable for hard real-time control loops. PIC MCUs target embedded control applications where cost, low power, and ease of programming outweigh raw computational throughput. Key features of the PIC16LF873A-I/SP include five 10-bit Analog-to-Digital Converter (ADC) channels with conversion rates up to 100 ksps, two 10-bit Pulse-Width Modulation (PWM) modules, a USART with addressable asynchronous/synchronous mode, a Master Synchronous Serial Port (MSSP) supporting SPI and I2C (master and slave), two analog comparators, and 22 general-purpose digital I/O pins organized across three ports (PORTA, PORTB, PORTC). The device supports in-circuit serial programming (ICSP) via two pins, allowing firmware updates without removing the part from the board. The architecture is built around a 14-bit instruction word, an 8-level deep hardware stack, and 35 single-cycle instructions. Brown-out Reset (BOR), Power-on Reset (POR), and a Watchdog Timer (WDT) with on-chip RC oscillator provide robustness for unattended industrial deployments. The SSP module handles I2C up to 400 kHz and SPI up to 10 MHz, while the USART supports RS-232/RS-485 links up to 5 Mbps. With 100,000 erase/write cycle endurance on Flash and EEPROM, the part is suitable for field-deployed systems requiring occasional firmware updates. Typical applications include industrial sensor conditioning, low-power remote sensor nodes, home appliance control panels, HVAC thermostat interfaces, motor control signal conditioning, and battery-powered instrumentation. The wide operating voltage range allows direct connection to single-cell lithium (3.6V nominal), two-cell alkaline (3.0V nominal), or regulated 5V rails. When designing with this MCU, ensure that the ICSPDAT/ICSPCLK pins are isolated from any heavy capacitive loads to avoid programming failures, and reserve a 100 nF decoupling capacitor within 5 mm of the VDD pin. The MCLR reset pin should be pulled up through a 10 kohm resistor to VDD and decoupled with a 100 nF capacitor in noisy environments. This page synthesizes distributor pricing, drop-in pin-compatible alternatives, and practical design considerations not found in the standalone manufacturer datasheet, helping engineers shorten the evaluation cycle and reduce sourcing risk.

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PIC16LF873A-I/SS - 8-bit MCU 7KB Flash 28-SSOP | Microchip
PIC16LF873A-I/SS

PIC16LF873A-I/SS - 8-bit MCU 7KB Flash 28-SSOP | Microchip

The Microchip Technology PIC16LF873A-I/SS is an 8-bit CMOS flash-based microcontroller from the PIC16F family, featuring 7KB (4K x 14 words) of program memory, 192 bytes of RAM, and 128 bytes of EEPROM, packaged in a 28-pin Shrink Small Outline Package (SSOP). Operating from 2.0V to 5.5V with a maximum clock speed of 10 MHz (200 ns instruction cycle), it delivers low-power CMOS technology combined with Microchip's nanoWatt power management features. A PIC (Peripheral Interface Controller) microcontroller is an 8-bit RISC microcontroller architecture developed by Microchip. It executes programs from non-volatile flash memory using a Harvard architecture with separate program and data buses, enabling single-cycle instruction fetch. PIC microcontrollers sit within the hierarchy: microcontroller -> embedded controller -> semiconductor device, and remain widely adopted for low-power, deterministic control applications due to their small instruction set and ease of in-circuit serial programming. Key features of the PIC16LF873A-I/SS include 22 digital I/O pins, five 10-bit ADC channels, two analog comparators, one 8-bit and one 16-bit timer/counter, a watchdog timer, and synchronous/async serial communication peripherals (USART, SSP supporting SPI and I2C). The instruction set comprises 35 single-word instructions with a 14-bit instruction width, supporting upward compatibility with PIC16C5X, PIC12CXXX, and PIC16C7X devices. Architecturally, this device uses a modified Harvard RISC core, 14-bit instruction word, and on-chip flash with self-programming support. The LF suffix denotes the wide-voltage, low-power variant designed for battery and energy-harvesting applications, distinguishing it from standard PIC16F873A parts which carry higher voltage tolerances. Brown-out reset (BOR), power-on reset (POR), and a programmable code protection scheme round out the built-in reliability features. Typical applications include industrial control loops, sensor signal conditioning with on-chip ADC, low-power remote sensor nodes, consumer appliance control, automotive body and interior modules (non-safety-critical), and educational/hobbyist embedded platforms. The combination of USART, SSP, and ADC makes it a strong fit for bridging analog sensors to a higher-level controller or network. When designing with this part, verify the SSOP-28 thermal envelope against expected power dissipation at maximum clock rate and ambient. Selecting the LF (low-voltage) variant is appropriate when the supply rail is at or below 5V; for full 5.5V headroom with extended temperature grades, evaluate the PIC16F873A-I/SS variant. This page synthesizes verified distributor pricing, exact SSOP-28 pinout, drop-in alternatives sourced from same-package PIC16 family members, and practical design notes not found in the standalone manufacturer datasheet.

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PIC16LF873AT-I/ML - 8-bit PIC MCU, 7KB Flash, 28-QFN | Microchip
PIC16LF873AT-I/ML

PIC16LF873AT-I/ML - 8-bit PIC MCU, 7KB Flash, 28-QFN | Microchip

The Microchip Technology PIC16LF873AT-I/ML is an 8-bit RISC microcontroller from the PIC16F family, offering up to 10 MHz operation, 7KB (4K x 14) of FLASH program memory, 192 bytes of SRAM, and 128 bytes of data EEPROM in a 28-pin QFN (6x6 mm) package with an exposed thermal pad. The 'LF' prefix denotes an extended low-voltage core supporting operation from 2.0 V to 5.5 V, while the 'T' suffix indicates tape-and-reel packaging and 'I' denotes the industrial -40C to +85C temperature range. The device integrates 22 digital I/O lines, three timers, two PWM channels, a USART, an MSSP (I2C/SPI), and a 10-bit ADC with up to 5 analog channels. What is a PIC microcontroller? A PIC microcontroller is a programmable system-on-a-chip built around the Microchip PIC (Peripheral Interface Controller) RISC architecture, combining CPU core, non-volatile FLASH program memory, volatile SRAM, data EEPROM, and a rich set of peripherals (timers, ADC, communication ports) into a single CMOS device. PIC MCUs belong to the broader microcontroller (MCU) family, which in turn sits under embedded systems and integrated circuits. They are widely used because of their deterministic instruction set, low power consumption, and easy in-system programmability via ICSP. Key features of the PIC16LF873AT-I/ML include 35 single-word instructions, 200 ns instruction execution time at 20 MHz (10 MHz part rated at 10 MHz max), nanoWatt power management with multiple idle/sleep modes, a 10-bit successive-approximation ADC with 5 channels, an enhanced USART supporting RS-485/RS-232, and an MSSP module configurable for SPI or I2C master/slave operation. The device also supports in-circuit serial programming (ICSP) via two pins, allowing firmware updates after PCB assembly. Architecturally, the part is built on Microchip's enhanced PIC16 mid-range core with a 14-bit instruction word and an 8-bit data path, providing 200 ns minimum instruction cycle. The Harvard architecture separates program and data buses, enabling simultaneous instruction fetch and data access. Hardware multipliers, watchdog timers, brown-out detect, and code protection bits round out the security and reliability feature set. Typical applications include low-power sensor nodes, battery-powered instrumentation, industrial control loops, automotive body electronics sub-modules, and consumer appliances. The exposed thermal pad on the 28-QFN package aids heat dissipation when the device drives I/O at high currents, while the wide operating voltage makes it suitable for 3.3 V and 5 V rails. When designing with this part, ensure decoupling capacitors are placed within 5 mm of the VDD pins and that the MCLR pin is pulled high through a 10 kohm resistor for normal operation, with optional ESD protection if the pin is exposed to user access.

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PIC16LF873AT-I/SO - 8-bit PIC MCU, 7KB Flash, 28-SOIC | Microchip
PIC16LF873AT-I/SO

PIC16LF873AT-I/SO - 8-bit PIC MCU, 7KB Flash, 28-SOIC | Microchip

The Microchip PIC16LF873AT-I/SO is a low-power 8-bit CMOS FLASH-based microcontroller in the PIC16F family, delivering 10 MIPS performance from a 10 MHz internal oscillator block in a 28-pin SOIC package. It integrates 7 KB of program Flash, 192 bytes of data RAM, and 128 bytes of EEPROM into a RISC core executing 35 single-word instructions in a 200 ns instruction cycle. The 'LF' suffix denotes the extended low-voltage operating range from 2.0 V to 5.5 V, while the 'T' suffix denotes Tape & Reel packaging, and 'I/SO' specifies the industrial -40C to +85C temperature range in SOIC-28 form. An 8-bit PIC microcontroller (PIC MCU) is a member of the Harvard-architecture RISC microcontroller family, a class of single-chip microcontrollers that dominate cost-sensitive embedded designs. PIC MCUs sit within the broader hierarchy of microcontrollers -> embedded processors -> semiconductor ICs, and PIC16F-series parts are positioned as Microchip's mid-range x14 architecture offering a balance of peripherals, code density, and price. Key features of the PIC16LF873AT-I/SO include a 10-bit ADC with up to 5 input channels, two 8-bit timers plus one 16-bit timer, a USART with addressable SPI/I2C support, an analog comparator, and 22 digital I/O pins. The device also provides in-circuit serial programming (ICSP), a watchdog timer with on-chip oscillator, and brown-out reset for reliable power-on behavior. Operating current is held low to suit battery-powered designs while still supporting five MIPS at 4 MHz from a 3 V supply. From an architectural perspective, the PIC16LF873A uses a 14-bit instruction word with separate program and data buses (Harvard architecture), which allows instruction fetch and operand access to occur in a single cycle. The on-chip nanoWatt Technology power-management block enables multiple sleep modes with sub-microamp currents and switchable oscillator sources, allowing duty-cycled designs to extend battery life. Typical applications include industrial sensor interfaces, low-power remote controls, smart metering, automotive body and accessory subsystems, white-goods motor control, and portable medical peripherals. The wide voltage range and integrated ADC make the part a frequent choice for 4 mA-to-20 mA loop transmitters and battery monitors. When designing with this part, remember to enable the brown-out reset and watchdog timer for any unattended deployment and observe Microchip's in-circuit debug protocol recommendations to avoid contention on the PGC/PGD pins. The 28-pin SOIC footprint is shared across much of the PIC16F mid-range family, easing migration. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

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PIC16LF873AT-I/SOG - 8-bit 10MHz MCU, 7KB Flash, 28-SOIC | Microchip
PIC16LF873AT-I/SOG

PIC16LF873AT-I/SOG - 8-bit 10MHz MCU, 7KB Flash, 28-SOIC | Microchip

The Microchip Technology PIC16LF873AT-I/SOG is an 8-bit RISC flash microcontroller in the PIC16F mid-range family, supplied in a 28-pin SOIC wide-body (SOIC-28) package on tape and reel. It operates from 2.0 V to 5.5 V supply (the LF variant optimized for low voltage and low-power designs), executes instructions at a 200 ns cycle time from a 10 MHz internal oscillator, and integrates 7 KB (4K x 14-word) of self-programmable flash program memory, 192 bytes of data RAM, and 128 bytes of EEPROM. The 'T' suffix denotes a tape-and-reel packaging option while '-I' indicates the industrial temperature grade of -40°C to +85°C. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program and data memory, and programmable I/O peripherals onto one IC. Within the broader semiconductor taxonomy, the PIC16LF873A belongs to the 8-bit MCU category, sits within Microchip's mid-range PIC16 instruction set architecture, and is part of the PIC16F87x family that introduced analog and enhanced peripherals to the classic PIC16 platform. Its RISC architecture with only 35 single-word instructions keeps firmware simple and code-efficient, supporting applications from consumer appliances to industrial control. Key features include 22 digital I/O lines multiplexed with peripherals, three timer/counters (Timer0, Timer1, Timer2), a 10-bit 5-channel analog-to-digital converter, two capture/compare/PWM modules, an MSSP module for SPI and I2C, a USART with 9-bit address detection, and a nanoWatt technology power-managed sleep mode. The 28-SOIC wide-body footprint provides generous thermal dissipation and easy hand-soldering or AOI inspection, while the on-chip In-Circuit Serial Programming (ICSP) and In-Circuit Debug (ICD) interfaces eliminate the need for external programmers. Typical applications include industrial sensor conditioning, motor control (DC, stepper, and small BLDC), embedded data logging, remote control transmitters, instrumentation front-ends, and battery-powered metering. Designers also pair the PIC16LF873A with LIN transceivers for in-vehicle body electronics thanks to its robust peripherals and industrial temperature range.

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PIC16LF873T-04/SO - 8-bit MCU 7KB Flash 4MHz 28-SOIC | Microchip
PIC16LF873T-04/SO

PIC16LF873T-04/SO - 8-bit MCU 7KB Flash 4MHz 28-SOIC | Microchip

The Microchip Technology PIC16LF873T-04/SO is an 8-bit PIC microcontroller built around a RISC core, featuring 7KB (4K x 14) of FLASH program memory, 192 bytes of RAM, and 22 digital I/O pins, all housed in a 28-pin SOIC (7.50 mm width) surface-mount package. It operates from a wide 2.5V/3.3V/5V supply at up to 4 MHz CPU clock, integrating peripherals suited for embedded control. A PIC16 microcontroller is a member of Microchip's PIC (Peripheral Interface Controller) 8-bit RISC architecture family, positioned within the broader category of microcontrollers -> microcontrollers (MCU) -> semiconductor. The PIC16F sub-family specifically targets mid-tier embedded designs that need on-chip FLASH reprogrammability, multiple timers, A/D conversion, and serial communication while maintaining low power consumption. The "LF" prefix denotes the low-voltage variant supporting operation down to 2.0V, and "T" indicates tape-and-reel delivery for high-volume assembly. Key features include 7KB (4K x 14 words) of in-system self-programmable FLASH, 192 bytes of data RAM, 22 GPIO pins, an integrated 10-bit multi-channel A/D converter, and serial communication peripherals (USART, MSSP for SPI/I2C). The device supports in-circuit serial programming (ICSP), allowing firmware updates without removing the part from the board, and includes multiple timers (TMR0, TMR1, TMR2) for event capture and PWM generation. Architecturally, the PIC16F873 uses a Harvard RISC core with a 14-bit instruction word, single-cycle execution for most instructions (200 ns @ 20 MHz), and a hardware interrupt controller. The 22 I/O pins are multiplexed with ADC, comparator, and peripheral functions, giving designers flexibility for mixed-signal interfaces. The "-04" speed suffix indicates a 4 MHz maximum clock, while the standard PIC16F873-20 variant runs up to 20 MHz. Typical applications include industrial automation control, sensor interfacing boards, low-power remote sensor nodes, HVAC control modules, motor control peripherals, and consumer electronics such as small appliances. The PIC16LF873T-04/SO suits legacy or replacement designs that demand an 8-bit MCU with proven PIC tool-chain support (MPLAB X IDE, XC8 compiler). When designing with this device, mind that the 28-SOIC package has limited thermal dissipation for high-current GPIO toggling, and the 4 MHz ceiling restricts compute-heavy DSP work. Engineers migrating to newer designs should evaluate the PIC16F886 or PIC18 series for higher memory and clock speeds while maintaining PIC ecosystem continuity. This page synthesizes distributor pricing, drop-in same-package alternatives (PIC16LF873-04/SO, PIC16LF873AT-I/SO), and practical design notes not found in the manufacturer datasheet alone.

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PIC16LF874-04/L - 8-bit 4MHz MCU, 7KB Flash, 44-PLCC | Microchip
PIC16LF874-04/L

PIC16LF874-04/L - 8-bit 4MHz MCU, 7KB Flash, 44-PLCC | Microchip

The Microchip Technology PIC16LF874-04/L is an 8-bit RISC microcontroller from the PIC16F family featuring 4 MHz maximum operating frequency, 7 KB (4K x 14) of Flash program memory, 192 bytes of SRAM, and 128 bytes of EEPROM data memory. It is housed in a 44-pin PLCC (Plastic Leaded Chip Carrier, 16.59x16.59 mm) surface-mount package with J-bend terminals, and integrates 33 digital I/O pins plus a 10-bit ADC. The 'LF' prefix designates the extended low-voltage variant supporting 2.0V to 5.5V operation, with '04' denoting the 4 MHz speed grade and 'L' indicating the PLCC package and commercial temperature grade (0C to +70C). An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash/ROM), working memory (RAM), data EEPROM, and peripheral interfaces on one silicon die. PIC microcontrollers use a Harvard RISC architecture that separates program and data buses, allowing instruction fetch and data access to occur in the same clock cycle. Within the broader semiconductor taxonomy, a PIC16F MCU belongs to: 8-bit microcontroller -> microcontroller -> embedded processor -> semiconductor IC. The 'F' suffix specifically indicates Flash-based program memory (reprogrammable in-circuit), and 'LF' denotes the low-voltage Flash variant. Key features include 14-bit instruction word width, 35 instructions, 8-level hardware stack, integrated 10-bit multi-channel analog-to-digital converter, USART, MSSP (SPI/I2C) port, capture/compare/PWM modules, and a watchdog timer with its own on-chip RC oscillator. The 44-PLCC package provides more I/O pins than the 28-pin SPDIP alternative while remaining socket-compatible with a wide range of legacy and industrial sockets, simplifying field replacement. Typical applications include industrial control boards, sensor signal conditioning, motor-control interfaces, automotive body electronics, and educational embedded platforms. The PIC16F874 family has a long industry presence with mature toolchain support (MPLAB X IDE, XC8 compiler, ICD programmers). When designing with this device, pay attention to the 2.0V minimum supply voltage and ensure brown-out and watchdog reset paths are configured. For high-noise industrial environments, add decoupling capacitors (100 nF ceramic + 10 uF bulk) close to VDD/AVDD/VSS/AVSS pins and follow Microchip's PCB layout guidelines for mixed-signal ground separation. This page synthesizes distributor pricing from DigiKey/Mouser/LCSC, drop-in PIC16LF874 family alternatives in the same 44-PLCC footprint, and practical design notes drawn from Microchip's published reference designs, providing information not duplicated on the manufacturer datasheet alone.

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PIC16LF874-04/P - 8-bit 4MHz PIC MCU, 7KB Flash, 40-PDIP | Microchip
PIC16LF874-04/P

PIC16LF874-04/P - 8-bit 4MHz PIC MCU, 7KB Flash, 40-PDIP | Microchip

The Microchip Technology PIC16LF874-04/P is an 8-bit PIC microcontroller operating at up to 4MHz, integrating 7KB (4K x 14) of Flash program memory, 192 bytes of RAM and 33 digital I/O pins in a 40-pin PDIP through-hole package. The 'LF' suffix denotes the low-voltage family variant supporting operation from 2.0V to 5.5V, suitable for battery-powered and portable designs. The '-04' speed grade specifies a 4MHz maximum oscillator frequency, while the '/P' suffix designates the PDIP-40 package. A PIC microcontroller (Programmable Interface Controller) is an 8-bit RISC-based microcontroller built on Harvard architecture, widely used in embedded control. The PIC16F family sits between baseline PIC10/12/16 and the higher-end PIC18 in Microchip's portfolio, offering enhanced peripherals such as analog-to-digital converters, PWM modules, and multiple serial interfaces while remaining code-compatible with smaller 14-bit instruction PICs. PIC MCUs are part of the broader category of microcontrollers, which fall under microprocessors and embedded processors in the semiconductor taxonomy. Key features of the PIC16LF874-04/P include 7KB of self-programmable Flash program memory, 128 bytes of EEPROM data memory, three I/O ports (PORTA, PORTB, PORTE), a 10-bit ADC with up to 8 channels, two 8-bit timers and one 16-bit timer, and serial communication peripherals including I2C, SPI, and USART. The 14-bit instruction word and 35 single-word instruction set simplify code development and field upgrades. Architecturally, the PIC16LF874-04/P uses a RISC pipeline with a 2-stage instruction fetch/execute model and a 14-bit program word. Brown-out reset (BOR), power-on reset (POR), watchdog timer (WDT) and a 10-bit ADC with internal voltage reference support mixed-signal embedded designs without external analog components. Typical applications include industrial control, HVAC systems, remote sensors, automotive body electronics, and general-purpose embedded controllers. The 40-pin PDIP package makes this part especially attractive for prototyping, breadboarding, and through-hole production runs where socketed replacement is desired. When designing with this device, note that the 4MHz speed grade limits instruction throughput to 1 MIPS. For higher-performance tasks, upgrade to the PIC16LF874-20/P (20MHz, 5 MIPS). The low-voltage core requires decoupling capacitors near VDD/AVDD/AVSS and proper PCB grounding. This page synthesizes distributor pricing, drop-in same-package alternatives from the PIC16F/LF874 family, and practical design notes not aggregated on the manufacturer datasheet.

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PIC16LF874-04/PQ - 8-bit 4MHz Flash MCU, 7KB, 44-MQFP | Microchip
PIC16LF874-04/PQ

PIC16LF874-04/PQ - 8-bit 4MHz Flash MCU, 7KB, 44-MQFP | Microchip

The Microchip Technology PIC16LF874-04/PQ is an 8-bit CMOS Flash microcontroller (PIC16 family) with 7KB (4K x 14) of program Flash memory, 192 bytes of SRAM, and 33 digital I/O pins, offered in a 44-pin MQFP (10x10 mm) PQ package. It runs up to 4 MHz from a 2.0-5.5 V supply, making it suitable for low-voltage and battery-friendly embedded designs. What is a PIC16 microcontroller? A PIC16 is an 8-bit RISC microcontroller from Microchip Technology based on the PIC16 family of cores, sitting in the hierarchy: PIC16 -> 8-bit MCU -> microcontroller -> embedded IC -> semiconductor. The 'LF' prefix denotes the low-voltage, low-power process variant, while the family integrates Flash program memory, on-chip RAM, EEPROM, timers, capture/compare/PWM, an A/D converter, and several serial peripherals on a single die. Key features of this part include 7KB Flash (organized as 4K x 14 single-word instructions), 192 bytes of general-purpose RAM, 128 bytes of EEPROM data memory, 33 I/O pins, a 10-bit multi-channel A/D converter, enhanced Capture/Compare/PWM modules, USART, SPI, and I2C. The 04 speed grade means a 4 MHz maximum oscillator frequency, and the I grade variant extends the operating temperature from -40C to +85C. Architecturally, the PIC16F874 employs a 14-bit instruction word RISC core with a single accumulator (WREG), a hardware multiplier is not present in this sub-family, and Harvard-style separate program and data buses. The wide 5.5 V supply tolerance simplifies designs that must interface with 5 V sensors, LED drivers, or industrial logic. Typical applications include industrial control panels, sensor interface boards, motor-control signal conditioning, automotive body electronics (non-safety), low-cost consumer appliances, and legacy embedded-system upgrades where 5 V tolerance and an industry-standard 8-bit MCU are required. Designers use it wherever simple deterministic control, low current draw, and abundant code space for state machines outpace the need for computation. When designing with this part, ensure decoupling of VDD with 100 nF and bulk caps placed within 5 mm of each supply pin, and verify MCLR routing for clean reset behavior. Always check the device errata for revisions affecting the A/D, USART, or oscillator blocks before committing to a board revision.

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PIC16LF874-04/PT - 8-Bit 4MHz MCU 7KB Flash 44-TQFP | Microchip
PIC16LF874-04/PT

PIC16LF874-04/PT - 8-Bit 4MHz MCU 7KB Flash 44-TQFP | Microchip

The Microchip Technology PIC16LF874-04/PT is an 8-bit PIC16F-family RISC microcontroller (MCU) with 4MHz maximum CPU clock, 7KB (4K x 14 words) of on-chip Flash program memory, packaged in a 44-pin TQFP (10x10 mm, PT suffix). It is part of Microchip's mid-range PIC16F874/877 series, the LF variant supporting 2.5V-3.3V low-voltage operation for battery-friendly designs, while remaining 5V-tolerant. A microcontroller (MCU) is a single-chip computer that integrates a CPU, RAM, Flash/ROM program memory, EEPROM, and a rich set of peripherals (I/O, timers, ADC, USART, I2C/SPI) into one device. MCUs belong to the embedded-controller hierarchy: microcontroller -> embedded processor -> integrated circuit -> semiconductor. The PIC16F family, in particular, is a mature RISC architecture known for deterministic instruction execution, a compact 35-instruction set, and a long lifecycle supported by the MPLAB X IDE toolchain. Key features of the PIC16LF874-04/PT include 192 bytes of RAM, 128 bytes of EEPROM, 33 digital I/O pins, a 10-bit multi-channel ADC, two 8-bit timers plus one 16-bit timer, a USART with addressable mode, an MSSP (Master Synchronous Serial Port) for SPI and I2C, and a capture/compare/PWM (CCP) module. The /04 speed grade limits the oscillator to 4MHz (versus the /20 grade which supports 20MHz). The LF (low-voltage) variant operates down to 2.0V, making it suitable for 2x AA battery-powered designs. Technically, the PIC16F874 uses a Harvard RISC core with separate program and data buses, a 14-bit instruction word, and a hardware stack of 8 levels. The 44-TQFP package exposes all three port banks (PORTA/B/C/D/E with 33 usable I/O), the two analog comparator inputs, and the two programming/debug pins (RB6/RB7) for ICSP (In-Circuit Serial Programming) and ICD (In-Circuit Debugger) operation. Typical applications include industrial control panels, instrumentation front-ends, low-power remote sensor nodes, automotive body controllers (with the /04 extended temperature variants), consumer appliance interfaces, and educational embedded platforms where deterministic behavior and a well-supported toolchain matter more than raw throughput. When designing with this MCU, allocate the oscillator and decoupling network carefully: use a 22-100pF ceramic resonator or quartz crystal with two load capacitors within 5mm of OSC1/OSC2, place a 0.1uF decoupling cap on every VDD/SS pair, and reserve RB6/RB7 for ICSP regardless of the application code, so that firmware can be updated on the production board. This page synthesizes distributor pricing, same-family drop-in alternatives, and practical design notes not found in the bare manufacturer datasheet, giving engineers a single reference for sourcing and second-sourcing the PIC16LF874-04/PT.

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PIC16LF874-04I/L - 8-Bit MCU, 7KB Flash, 4MHz, 44-PLCC | Microchip
PIC16LF874-04I/L

PIC16LF874-04I/L - 8-Bit MCU, 7KB Flash, 4MHz, 44-PLCC | Microchip

The Microchip Technology PIC16LF874-04I/L is an 8-bit RISC microcontroller from the PIC16F family, featuring 7KB (4K x 14 words) of Flash program memory, 192 bytes of RAM, and 33 I/O pins. Operating at up to 4 MHz from a 2.0V-5.5V supply, this industrial-temperature (-40C to +85C) part is housed in a 44-pin PLCC (Plastic Leaded Chip Carrier, J-lead) package measuring 16.59 mm x 16.59 mm. A PIC microcontroller is a RISC-based, Harvard-architecture 8-bit MCU widely used in embedded control. Within the broader taxonomy, it sits as: PIC16F family -> PIC16F87x sub-family -> 8-bit microcontroller -> microcontroller unit (MCU) -> semiconductor. The 'LF' prefix designates the low-voltage (2.0V-5.5V) Flash variant, while '874' denotes a 7KB Flash / 192B RAM member with 33 digital I/O lines, integrated A/D, USART, and Capture/Compare/PWM peripherals. The '04' speed suffix specifies a 4 MHz maximum oscillator frequency, and the 'I' suffix marks the industrial operating temperature grade. Key features include 7KB Flash program memory, 192 bytes of data RAM, 128 bytes of EEPROM data memory, 33 digital I/O lines, a 10-bit Analog-to-Digital Converter with multiple input channels, a USART serial port, Capture/Compare/PWM modules, and a watchdog timer. The integrated peripherals reduce external component count and BOM cost in embedded designs. Architecturally, the device uses a 14-bit instruction word with 35 single-cycle instructions, providing deterministic real-time response. Harvard bus architecture separates program and data memories, allowing instruction fetch and data access in a single clock cycle. The 4 MHz oscillator combined with a 4:1 instruction cycle ratio yields a 1 MIPS execution throughput. Typical applications include industrial process control, sensor interfacing and data acquisition, motor control loops, low-power portable instruments, automotive body electronics (non-safety), and consumer appliance controllers. The wide operating voltage range (2.0V-5.5V) enables direct battery-powered and USB-bus-powered designs. The PLCC-44 package also supports through-hole and socketed installation, easing prototype rework and field service. When designing with this part, observe the maximum 4 MHz clock input and ensure decoupling capacitors (typically 100 nF) are placed close to VDD/SS pins. The PLCC-44 socket footprint allows easy firmware swap during development. Industrial-grade operation covers -40C to +85C, suitable for most factory and outdoor environments. This page synthesizes distributor pricing, parametric alternatives, and practical design notes not found in the manufacturer datasheet alone.

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PIC16LF874-04I/P - 8-bit MCU, 4MHz, 7KB Flash, 40-Pin DIP | Microchip
PIC16LF874-04I/P

PIC16LF874-04I/P - 8-bit MCU, 4MHz, 7KB Flash, 40-Pin DIP | Microchip

The Microchip Technology PIC16LF874-04I/P is a low-power, 8-bit RISC microcontroller in a 40-pin PDIP (DIP) through-hole package, featuring 7KB (4K x 14) of Flash program memory and 192 bytes of SRAM. It operates at up to 4MHz and includes 33 digital I/O lines, plus on-chip peripherals such as A/D, capture/compare/PWM, USART, and I2C/SPI interfaces. What is a PIC microcontroller? An 8-bit microcontroller is a single-chip computer built around an 8-bit data path, integrating a CPU core, program memory (Flash/ROM), data RAM, and peripherals (timers, communication, ADC) into one package. The PIC family from Microchip uses a Harvard RISC architecture with a small, deterministic instruction set (~35 instructions) and is widely used for embedded control because of its low cost, low power, and ease of programming. PIC microcontrollers sit within the broader hierarchy: microcontroller -> embedded processor -> semiconductor IC -> electronic component. Key features include operation across an industrial -40C to +85C temperature range (the 'I' suffix), 128 bytes of EEPROM data memory, an internal oscillator option, and a wide 2.0V to 5.5V supply range thanks to the 'LF' low-power/frequency designation. This dual-voltage flexibility supports battery-powered applications. Architecturally, the PIC16LF874 pairs a 14-bit instruction word with an 8-bit data path. The 40-pin PDIP form factor exposes up to 33 I/O lines, plus dedicated pins for ICSP programming, an external reset, and the two analog comparator inputs. Typical applications include industrial control boards, appliance controls, automotive body modules, sensor signal conditioning, and battery-driven instruments. When designing with the PIC16LF874-04I/P, ensure the crystal or resonator is placed within 1 cm of the OSC1/OSC2 pins. For low-power designs, use the internal RC oscillator to save components and current. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

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PIC16LF874A-I/L - 8-bit PIC MCU, 7KB Flash, 10MHz, 44-PLCC | Microchip
PIC16LF874A-I/L

PIC16LF874A-I/L - 8-bit PIC MCU, 7KB Flash, 10MHz, 44-PLCC | Microchip

The Microchip Technology PIC16LF874A-I/L is an 8-bit RISC microcontroller built on the PIC16 CPU core, featuring 7KB (4K x 14) of FLASH program memory, 192 bytes of RAM, and 33 digital I/O pins, housed in a 44-pin PLCC package (16.59 x 16.59 mm). The device operates up to 10 MHz and is designed for low-voltage (LF) applications, supporting a minimum supply voltage of 2.0V. A microcontroller (MCU) is a single-chip computer containing a processor core, program memory, data memory, and programmable I/O peripherals. The PIC16LF874A belongs to the PIC16F family of microcontrollers, which sit in the broader hierarchy of microcontroller -> embedded controller -> semiconductor device. The 'LF' prefix designates low-voltage operation, suitable for battery-powered and portable designs. The 'F' indicates FLASH-based program memory, enabling in-circuit reprogramming via ICSP. Key features of the PIC16LF874A-I/L include the enhanced 14-bit instruction set of the PIC16 architecture, integrated peripherals such as multiple timers, a 10-bit ADC, USART, MSSP (SPI/I2C), and capture/compare/PWM modules. The device supports In-Circuit Serial Programming (ICSP) and In-Circuit Debugger (ICD) interfaces, allowing field firmware updates and development without removing the chip from the PCB. The PIC16LF874A-I/L is fabricated using CMOS technology for low power consumption and operates over the industrial temperature range (-40C to +85C). Its Harvard architecture with separate program and data buses enables deterministic instruction execution, ideal for real-time control applications. The 44-PLCC package provides robust through-hole mounting with a socket-replaceable form factor, useful for prototyping and legacy designs. Typical applications include industrial control systems, automotive subsystems, sensor interface modules, home appliance controls, and battery-powered instrumentation. The combination of FLASH memory, integrated ADC, and USART makes this MCU a strong fit for embedded data acquisition nodes. When designing with the PIC16LF874A-I/L, ensure decoupling capacitors (0.1uF ceramic) are placed near each power pin. Verify the supply voltage stays within the LF family range, and use MPLAB X IDE with a compatible compiler (XC8) for firmware development. The device date-of-introduction is 1998-12-01, indicating it is a long-established part. This page synthesizes distributor pricing, drop-in equivalents, and practical design notes not found in the standalone manufacturer datasheet, helping engineers and procurement teams evaluate this Microchip MCU for new and legacy designs.

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PIC16LF874A-I/ML - 8-bit MCU, 7KB Flash, 33 I/O | Microchip
PIC16LF874A-I/ML

PIC16LF874A-I/ML - 8-bit MCU, 7KB Flash, 33 I/O | Microchip

The Microchip Technology PIC16LF874A-I/ML is a low-power CMOS 8-bit flash microcontroller built on the enhanced PIC16 mid-range core, packaged in a 44-pin QFN (ML) with exposed pad, and offering 7 KB (4K x 14) of program memory, 192 bytes of SRAM, and 128 bytes of EEPROM data memory. The device executes instructions in 200 ns at a 20 MHz oscillator input, supports up to 33 digital I/O pins, and integrates a 10-bit A/D converter with up to 8 channels, two analog comparators, a USART, an SSP (SPI/I2C), and capture/compare/PWM modules. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory (Flash/ROM), data memory (RAM), and peripherals onto one silicon die. Within the broader taxonomy, the PIC16LF874A belongs to the 8-bit MCU -> microcontroller -> embedded controller -> semiconductor hierarchy. The 'LF' prefix denotes the low-voltage, low-power process variant that operates across an extended 2.0V to 5.5V range, making it well-suited to battery-powered or energy-harvesting designs. Key differentiating features of the PIC16LF874A include its 35 single-word instruction RISC architecture, self-programming capability, in-circuit debugging (ICD) support, and 10 MIPS sustained throughput. The 44-pin QFN (ML) package offers a small 8x8 mm footprint with an exposed thermal pad that improves power dissipation versus leaded PLCC packages, while remaining compatible with the PIC16F874A pinout (differing only in core voltage range). The device uses a Harvard architecture with separate program and data memory buses, enabling simultaneous instruction fetch and operand access. The enhanced core adds 14-bit instructions, hardware multiplier support (via software libraries), interrupt handling with shadow registers, and a wide peripheral set including the Enhanced USART and MSSP peripheral for SPI and I2C communications. Typical applications include industrial control panels, sensor signal conditioning, low-power remote sensor nodes, motor control loops with feedback sensing, and consumer appliance user interfaces. The 10-bit ADC with 8 input channels makes it a fit for analog sensor reading systems. Consider whether legacy 5V systems should use the PIC16F874A variant instead, while the LF suffix guarantees operation down to 2.0V for newer low-voltage designs. When designing with this device, ensure the exposed pad (EP) is soldered to the ground plane for proper thermal performance and that the configuration bits are correctly set for the chosen oscillator mode. Programming via ICSP requires Vpp, ICSPCLK, and ICSPDAT access on dedicated pins.

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