Microcontroladores

Productos (18756)

PIC18LF4410T-I/ML - 8-bit PIC MCU, 16KB Flash, 40MHz, 44-QFN | Microchip
PIC18LF4410T-I/ML

PIC18LF4410T-I/ML - 8-bit PIC MCU, 16KB Flash, 40MHz, 44-QFN | Microchip

The Microchip Technology PIC18LF4410T-I/ML is an 8-bit PIC microcontroller with 16KB (8K x 16) of Flash program memory, 768 bytes of RAM, and a 40 MHz core clock, housed in a 44-pin QFN (8x8 mm) package with an exposed thermal pad (ML suffix). It integrates a 13-channel 10-bit ADC, channels USART/UART, I2C, SPI, and 36 digital I/O lines operating from a 2.0 V to 5.5 V supply range, supporting the LF low-voltage family. An 8-bit PIC microcontroller is a Harvard-architecture RISC processor widely used in embedded control. PIC microcontrollers (MCU -> microcontroller -> embedded controller -> semiconductor) integrate CPU, Flash, RAM, peripherals, and interrupt logic on a single die, enabling compact BOMs in motor control, sensor interfaces, and consumer appliances. The 'LF' in the part number designates the extended low-voltage family, which retains full speed down to 2.0 V versus the standard F family that runs at 4.2 V minimum. Key features include 16 KB Flash (8K x 16 instructions), 768 bytes RAM, 256 bytes EEPROM, a 13-channel 10-bit ADC, two analog comparators, two CCP/ECCP modules, a 16-bit timer/counter, and three 8-bit timers. NanoWatt power management provides Idle and Sleep modes with on-the-fly oscillator switching. The device also includes a programmable brown-out reset, a watchdog timer with its own on-chip RC oscillator, and an ICD/ICSP in-circuit debug interface accessible through dedicated RB6/RB7 pins. The 44-QFN (ML) package offers a compact 8x8 mm footprint with an exposed thermal pad that reduces junction-to-board thermal resistance and improves high-current GPIO performance. Microchip's PIC18 instruction set provides single-cycle execution for most instructions and a linear code space with hardware multiply, easing migration from smaller PIC16 designs. The 'T' suffix in the MPN denotes tape-and-reel packaging for high-volume assembly, while 'I/ML' indicates the industrial temperature range (-40 °C to +85 °C) and the QFN package code. Typical applications include industrial sensor nodes, low-power IoT edge devices, consumer white goods, HVAC fan and blower control, lighting ballasts, and human-machine interface (HMI) panels. The combination of analog-rich peripherals (10-bit ADC, comparators) and low-voltage operation makes the PIC18LF4410 particularly suited to battery-powered or 3.3 V regulated systems that previously required the 5 V-only F variant. When designing with this MCU, place decoupling capacitors (100 nF + 10 uF) within 5 mm of each VDD/VSS pair and bond the exposed pad (EP) to a continuous ground plane to meet the QFN thermal and electrical requirements. The PIC18LF4410 is pin-compatible with the PIC18LF4610 (96 KB Flash) and PIC18LF4510 (32 KB Flash) for footprint-conservative memory upgrades. This page synthesizes distributor pricing, drop-in alternatives from the PIC18LF family, and practical design notes not found in the manufacturer datasheet.

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PIC18LF4410T-I/PT - 8-Bit 40MHz MCU 16KB Flash 44-TQFP | Microchip
PIC18LF4410T-I/PT

PIC18LF4410T-I/PT - 8-Bit 40MHz MCU 16KB Flash 44-TQFP | Microchip

The Microchip Technology PIC18LF4410T-I/PT is an 8-bit PIC18 microcontroller with a 40 MHz CPU core, 16 KB of FLASH program memory (8K x 16), 768 bytes of RAM, and a 13-channel 10-bit ADC, packaged in a 44-pin TQFP (10x10 mm). It is the tape-and-reel variant of the PIC18LF4410-I/PT and belongs to the PIC18 LF "low-power" family with NanoWatt Technology for active and sleep current management. An 8-bit microcontroller is a single-chip computer with an 8-bit data path, on-chip FLASH program memory, RAM, and integrated peripherals such as ADC, timers, and serial interfaces. MCUs sit in the embedded-system hierarchy alongside microprocessors, DSPs, and FPGAs, and are preferred when deterministic control of low-to-moderate complexity tasks is required at minimal cost and power. The PIC18 family in particular extends the legacy PIC16 architecture with 16-bit instructions, linear memory, C-friendly design, and enhanced peripherals while retaining the classic PIC toolchain. Key features include 16 KB FLASH and 768 B RAM, 36 digital I/O pins, a 10-bit ADC with up to 13 input channels, two CCP modules, and serial peripherals including I2C, SPI, and an enhanced addressable USART. NanoWatt Technology provides multiple idle and sleep modes that drop core current to the microampere range, which is the reason for the "LF" suffix in the part number. The 44-pin TQFP (PT) gives a generous pin budget for parallel buses or multiple analog inputs. Architecturally the PIC18LF4410 uses a Harvard RISC core with a 16-bit instruction word, an 8-level hardware stack, and priority-interrupt controller. The on-chip voltage regulator accepts a wide supply range of 2.0 V to 5.5 V, and the LF variant is optimized for full operation across that window including a true 3.3 V rail. Self-programming FLASH and an ICD-friendly debug interface are standard for the family. Typical applications include industrial control boards, white-goods and appliance panels, sensor conditioning nodes, automotive body and interior subsystems, low-end human-machine interface modules, and USB/serial bridging companion designs. The wide supply range also makes the part attractive for battery- or energy-harvesting designs. When designing, place 100 nF decoupling on every VDD pin, tie the MCLR pin through a 10 kohm pull-up to VDD, and respect the in-circuit debug pinout. Verify that the chosen 16 KB part is sufficient for both the application and any USB/HID bootloader you intend to use. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not assembled in the manufacturer datasheet, so you can shorten part selection and PCB reuse decisions.

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PIC18LF442-I/L - 8-bit MCU 16KB Flash 40MHz 44-PLCC | Microchip
PIC18LF442-I/L

PIC18LF442-I/L - 8-bit MCU 16KB Flash 40MHz 44-PLCC | Microchip

The Microchip Technology PIC18LF442-I/L is an 8-bit RISC CMOS flash microcontroller in the PIC18F family, delivering 10 MIPS (100 ns instruction execution) performance from a 40 MHz clock. It integrates 16 KB of flash program memory (8K x 16), 768 bytes of RAM, 256 bytes of EEPROM, and 34 digital I/O lines in a 44-pin PLCC package measuring 16.59 x 16.59 mm. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory (ROM/flash), data memory (RAM), and peripherals. The PIC18F architecture is an enhanced 8-bit family within the broader PIC microcontroller hierarchy, offering 77 single-word instructions with 16-bit instruction width. PIC18LF variants are the low-power "LF" family members optimized for 2.0-5.5 V operation, while PIC18F (without the "L") targets 4.2-5.5 V. The PIC18LF442 specifically targets industrial-temperature, low-voltage designs where the 2 V minimum rail extends battery and energy-harvesting lifetime. Key differentiating specifications include a 10-bit ADC with up to 8 channels, a USART, MSSP (SPI/I2C), capture/compare/PWM modules, dual analog comparators, and a 16-bit timer architecture. The 40 MHz oscillator drives 10 MIPS throughput, making it well-suited for control loops and serial-bus bridging. Brown-out Reset (BOR), Power-on Reset (POR), Watchdog Timer with its own on-chip RC oscillator, and In-Circuit Serial Programming (ICSP) provide robust embedded deployment. The PIC18F core uses a Harvard architecture with separate program and data buses, plus a 32-level hardware stack. The "LF" low-power process technology provides reduced active and sleep current versus the standard "F" siblings, which is the principal differentiator from PIC18F442 in 5 V designs. Code compatibility across PIC16C5X/PIC12CXXX/PIC16CXX/PIC17CXX preserves legacy code while enabling migration to higher performance. Typical applications include industrial automation controllers, sensor interface nodes, automotive body electronics (non-safety), HVAC control panels, smart metering, and consumer appliance control. The 44-PLCC footprint is convenient for socketed prototyping and field-replaceable modules, and the 5.5 V tolerance eases integration with legacy 5 V analog front ends. When designing with this part, place decoupling capacitors (100 nF plus bulk) within a few millimetres of every VDD/VSS pin pair, especially because the ADC reference shares VDD. Configure CONFIG words to match oscillator mode, BOR threshold, and watchdog state before code execution - locked-out debug or wrong clock mode is the most common bring-up failure on this family. This page consolidates distributor pricing, drop-in compatible alternatives, and practical design notes that go beyond the manufacturer datasheet to support faster design-in and sourcing decisions for the PIC18LF442-I/L.

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PIC18LF442-I/P - 8-Bit 40MHz 16KB Flash MCU 40-PDIP | Microchip
PIC18LF442-I/P

PIC18LF442-I/P - 8-Bit 40MHz 16KB Flash MCU 40-PDIP | Microchip

The Microchip Technology PIC18LF442-I/P is a high-performance 8-bit CMOS Flash-based microcontroller built on the PIC18 architecture, delivering 10 MIPS at 40 MHz with 16 KB of program memory, 768 bytes of RAM, and 256 bytes of EEPROM in a 40-pin PDIP (DIP-40) through-hole package. The PIC18LF442-I/P integrates 34 digital I/O lines, a 10-bit Analog-to-Digital Converter with multiple input channels, capture/compare/PWM modules, and standard serial peripherals, addressing the needs of cost-sensitive industrial and consumer embedded designs. A PIC18 microcontroller is part of Microchip's enhanced 8-bit MCU family that uses a modified Harvard architecture with separate program and data buses plus a 16-bit instruction word. PIC18 microcontrollers are positioned in Microchip's portfolio between the legacy PIC16 baseline family and the PIC24/dsPIC 16-bit families, and are widely adopted in motor control, sensing, low-power IoT edge nodes, and human-machine interface applications due to their deterministic interrupt latency, mature MPLAB XC8 toolchain support, and broad ecosystem of libraries. Key features of the PIC18LF442-I/P include 40 MHz maximum clock speed (10 MIPS), 16 KB on-chip Flash program memory, 768 bytes SRAM, 256 bytes EEPROM, 34 I/O pins, three 16-bit timers, a 10-bit multi-channel ADC, USART, MSSP (SPI/I2C), and a 4x PLL. The 'LF' designator denotes the wide-voltage (2.0V-5.5V) variant suited to battery-powered systems; the 'I/P' suffix specifies the industrial temperature range (-40C to +85C) and PDIP-40 package. Internal RC oscillator, brown-out reset, and low-voltage detect simplify BOM cost. The device uses a RISC instruction set with 77 single-word instructions, a hardware multiplier, and a 16-bit wide instruction bus for fast execution. Its 8-bit data path and accumulator-based register model support direct C compilation via MPLAB XC8 while preserving PIC legacy assembly code portability. The integrated 10-bit ADC delivers up to 8 channels, supporting up to ~20 kSPS for sensor signal acquisition in industrial control loops. Typical applications include industrial automation controllers, HVAC sensor interface boards, low-cost consumer appliances, motor driver peripherals (small BLDC/PMSM), automotive body electronics (non-safety), and educational development boards. Designers choose this MCU when they need 8-bit simplicity, mature tooling, and a wide operating voltage range. When designing with the PIC18LF442-I/P, ensure the configured clock source (HS, XT, internal RC) matches Fosc vs. VDD per the datasheet electrical specifications. Always enable the watchdog timer for industrial deployments, and reserve at least one timer for FreeRTOS/PIC18 SysTick-equivalent scheduling if real-time control is required. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not consolidated in the manufacturer datasheet alone, helping engineers shorten PIC18 BOM selection and qualification time.

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PIC18LF442-I/PT - 8-Bit 40MHz 16KB Flash MCU | Microchip | TQFP-44
PIC18LF442-I/PT

PIC18LF442-I/PT - 8-Bit 40MHz 16KB Flash MCU | Microchip | TQFP-44

The Microchip Technology PIC18LF442-I/PT is an 8-bit PIC® RISC flash microcontroller running at 40 MHz (10 MIPS) with 16 KB of program Flash and 768 bytes of RAM, housed in a 44-pin TQFP (10x10 mm) package. It operates across a wide 2.0 V to 5.5 V supply range, with 34 digital I/O lines, a 10-bit multi-channel ADC, and integrated peripherals including I2C, SPI, and USART. What is a PIC18 microcontroller? The PIC18 family from Microchip is a high-performance 8-bit CMOS Flash MCU line using an enhanced RISC architecture with 77 single-word instructions and a hardware multiplier. PIC18 belongs to the broader category: microcontroller -> embedded MCU -> 8-bit MCU -> CMOS RISC processor -> semiconductor. These devices target applications requiring deterministic real-time control, low power, and easy reprogrammability in-circuit. Key features of the PIC18LF442 include: 16 KB (8K x 16) self-programmable Flash program memory, 768 bytes of RAM, 256 bytes of EEPROM, 34 I/O pins with individually programmable pull-ups, four timer modules, a 10-bit ADC with up to 8 input channels, two analog comparators, an enhanced USART with autobaud detection, an MSSP module supporting SPI and I2C (master/slave), and a 10 MHz internal oscillator option alongside external crystal support up to 40 MHz. The architecture provides 10 MIPS throughput, hardware stack, priority interrupts, and nanoWatt power management with multiple idle and sleep modes. The enhanced flash cell supports >100 k erase/write cycles and supports self-programming under firmware control, enabling bootloader and field-update scenarios. Typical applications include industrial sensor interfaces, motor control peripherals, HVAC controllers, automotive body electronics (non-AEC-Q100), consumer appliance control boards, and USB-to-UART bridges when paired with a separate USB transceiver. The wide 2.0-5.5 V supply supports both 3.3 V and 5 V system rails. When designing with this MCU, use a 0.1 uF decoupling capacitor per VDD pin placed within 5 mm, and ensure MCLR is tied through a 10 kohm pull-up to VDD for reliable reset. The ICD/ICSP programming pins (RB6/RB7) should not be heavily loaded during debug sessions to avoid programming failure. This page synthesizes distributor pricing, same-family pin-compatible drop-in alternatives, and practical design notes not found in the bare manufacturer datasheet.

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PIC18LF4420-I/ML - 8-Bit MCU, 16KB Flash, 40MHz, 44-QFN | Microchip
PIC18LF4420-I/ML

PIC18LF4420-I/ML - 8-Bit MCU, 16KB Flash, 40MHz, 44-QFN | Microchip

The Microchip PIC18LF4420-I/ML is an 8-bit PIC18 enhanced flash microcontroller running at up to 40 MHz, with 16 KB of flash program memory and 768 bytes of RAM, housed in a 44-pin QFN (8x8 mm) package. The "LF" variant operates across 2.0 V to 5.5 V, making it ideal for low-voltage designs that must share rails with 3.3 V peripherals and 5 V analog blocks. The "I" temperature suffix indicates an industrial temperature range of -40 C to +85 C, while the "/ML" suffix designates the lead-free 8x8 mm QFN with exposed pad. A microcontroller (MCU) is a single-chip computer containing a CPU core, non-volatile program memory (flash), volatile working memory (RAM), and a rich set of on-chip peripherals. Within the embedded hierarchy, an 8-bit MCU like the PIC18F sits below 32-bit Cortex-M parts in arithmetic performance but above discrete logic in functional integration. The PIC18LF4420 belongs to the PIC18F "high-performance 8-bit" family that adds a hardware multiplier, C-friendly architecture, and 16-bit instructions compared to baseline PIC16F parts. Key features of the PIC18LF4420 include a 10-bit ADC with up to 13 input channels, a 4x4 hardware multiplier for fast DSP-style math, two enhanced CCP modules and one USART, I2C, SPI, and a parallel slave port for external memory expansion. The device supports self-programming under firmware control, allowing bootloader-driven field updates and on-chip EEPROM emulation. An extended watchdog timer and brown-out reset help recover from code faults and brown-out events. Architecturally, the PIC18LF4420 uses a 16-bit instruction word with an 8-bit data path, a modified Harvard memory map, and a priority-level interrupt controller. The 40 MHz oscillator provides up to 10 MIPS, and the nanoWatt technology reduces sleep current to under 100 nA with the RTCC and watchdog running, which is critical for battery-powered sensors. Typical applications include industrial sensing and control, USB/HID bridges when paired with a serial interface, low-power sensor hubs, motor control loops, and white-goods user interfaces. The wide voltage range and generous peripheral set make it a popular choice for migration from older PIC16F and PIC18F designs. Drop-in compatibility with PIC18F4520 in the same 44-pin QFN lets engineers move between 5 V F-variant and LF-variant designs without PCB rework.

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PIC18LF4420-I/PT - 8-bit 40MHz MCU 16KB Flash 44-TQFP | Microchip
PIC18LF4420-I/PT

PIC18LF4420-I/PT - 8-bit 40MHz MCU 16KB Flash 44-TQFP | Microchip

The Microchip Technology PIC18LF4420-I/PT is an 8-bit RISC microcontroller from the PIC18 family, featuring 16KB (8K x 16) of FLASH program memory, 768 bytes of RAM, and 256 bytes of EEPROM, housed in a 44-pin TQFP (10x10 mm) package. It operates at a maximum clock frequency of 40MHz (10 MIPS) from a 2.0V to 5.5V supply voltage range, with the "LF" low-voltage silicon offering extended low-power operation down to 2V at 4MHz. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program and data memory, peripherals, and I/O into one package. The PIC18 family is Microchip's enhanced 8-bit architecture that sits between the baseline PIC16 family and the 16-bit dsPIC family. Within this hierarchy, the PIC18LF4420 belongs to the PIC18F4420 sub-family, which targets general-purpose embedded control with on-chip 10-bit ADC, multiple timers, and communication peripherals. Key features include 36 digital I/O pins, a 10-bit ADC with up to 13 input channels, two capture/compare/PWM modules, two USART modules, an SPI/I2C master/slave MSSP peripheral, and a 13-channel ADC. The device supports in-circuit serial programming (ICSP) and in-circuit debugging via two program/debug pins, enabling direct flash programming on the assembled PCB without removing the device. The PIC18LF4420-I/PT employs an enhanced Harvard architecture with a 16-bit instruction word and 8-bit data path, achieving 200ns minimum instruction execution at 40MHz. Internal Phase-Locked Loop (PLL) support and an internal 31kHz to 8MHz oscillator reduce external component count, while the nanoWatt technology provides multiple power-managed modes (Idle, Sleep) for battery-powered applications. Typical applications include industrial control panels, automotive body electronics (non-safety), sensor node interfaces, HVAC controllers, low-power remote controls, and consumer white goods. The wide 2.0V to 5.5V operating range supports both 3.3V and 5V system designs. When designing with this device, ensure decoupling capacitor placement (100nF) close to VDD pins and that MCLR is pulled high through a resistor for normal operation. The 44-TQFP package has a relatively large 10x10 mm footprint - if board space is critical, consider the QFN-package variant PIC18LF4420-I/ML. This page synthesizes distributor pricing, drop-in PIC18F/LF family alternatives, and practical design notes not found in the manufacturer datasheet.

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PIC18LF4420T-I/ML - 16KB Flash 8-bit MCU 44-QFN | Microchip
PIC18LF4420T-I/ML

PIC18LF4420T-I/ML - 16KB Flash 8-bit MCU 44-QFN | Microchip

The Microchip PIC18LF4420T-I/ML is an 8-bit RISC microcontroller from the PIC18F family, offering 16 KB of Flash program memory, 768 bytes of SRAM, and 256 bytes of EEPROM, housed in a 44-pin QFN (ML) package with tape-and-reel packaging. It executes instructions at up to 10 MIPS through a 40 MHz oscillator, integrates a 10-bit ADC with up to 13 channels, and operates from 2.0 V to 5.5 V across industrial temperature ranges. A microcontroller (MCU) is a single-chip computer containing a CPU core, program memory, working RAM, and programmable peripherals. The PIC18LF architecture uses an enhanced 8-bit Harvard RISC core with a 16-bit instruction word, placing it within the broader hierarchy: 8-bit MCU -> microcontroller -> embedded processor -> semiconductor. The LF prefix designates the low-voltage variant, allowing battery-powered and 3.3 V designs without efficiency loss compared to the 5 V-only F-series. Key features include nanoWatt Technology for dynamic power management with multiple idle and sleep modes, a 10-bit successive-approximation ADC with automatic acquisition, dual analog comparators, one Enhanced Capture/Compare/PWM (ECCP) module and one CCP module, MSSP (SPI/I2C) and Enhanced USART peripherals, a 16-bit timer/counter plus two 8-bit timers, and a 13-channel 10-bit ADC. The device supports in-circuit serial programming (ICSP) and self-programming. The PIC18LF4420 implements an enhanced Harvard architecture with separate program and data buses, a hardware multiplier, and a priority-level interrupt controller supporting both vectored and polled interrupt models. nanoWatt Technology provides INTOSC, INTOSCIO, and secondary oscillator modes for low-power operation. Typical applications include industrial control panels, low-power sensor nodes, HVAC thermostats, portable instrumentation, and battery-powered metering devices where the LF voltage range and QFN footprint enable compact PCB layouts. The 36 I/O pins provide flexible peripheral mapping for mixed analog and digital interfaces. When designing with this device, ensure the QFN thermal pad is soldered to a sufficient copper pour for heat dissipation, place decoupling capacitors within 5 mm of each power pin, and configure the configuration bits correctly for the chosen oscillator mode. This page synthesizes drop-in alternatives, comparison data, and practical design notes compiled from Microchip datasheets and distributor inventories.

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PIC18LF4423-I/PT - 8-Bit 40MHz 16KB Flash MCU | Microchip
PIC18LF4423-I/PT

PIC18LF4423-I/PT - 8-Bit 40MHz 16KB Flash MCU | Microchip

The Microchip Technology PIC18LF4423-I/PT is an 8-bit PIC18 family CMOS flash-based microcontroller running up to 40 MHz (10 MIPS), integrating 16 KB (8K x 16) of program Flash and 768 bytes of SRAM in a 44-pin TQFP (PT) package. The LF suffix denotes the wide 2.0-5.5V operating range optimized for low-voltage F-series designs. What is a PIC18 microcontroller? PIC18 microcontrollers are 8-bit RISC MCUs built on Microchip's enhanced Harvard architecture, supporting up to 16 MIPS throughput with a 16-bit instruction word and 8-bit data path. They occupy the mid-tier of the PIC family hierarchy: PIC microcontroller -> 8-bit MCU -> enhanced RISC core -> PIC18 sub-family -> peripheral-rich variants with ADC, PWM, and communication peripherals. Key features include 36 digital I/O pins, a 10-bit A/D converter with up to 13 channels, multiple serial interfaces (EUSART, MSSP for SPI/I2C), Capture/Compare/PWM modules, and nanoWatt Technology for power-managed sleep modes. The 40 MHz Fosc yields 100 ns instruction cycle with 4x PLL options, supporting demanding real-time control tasks. The device uses Harvard bus architecture with separate program Flash and data SRAM paths, plus internal 32 kHz oscillator and PLL for flexible clocking. On-board self-programmability via ICSP enables field firmware upgrades, while the enhanced instruction set adds hardware multiply and direct register operations, simplifying C compiler code generation for portable firmware. Typical applications include industrial control panels, HVAC sensor interfaces, low-power consumer appliances, USB/HID peripherals, and battery-powered instrumentation. Its low-voltage LF operation makes it suitable for 2-3 AA cell designs or 3.3V system rails where standard PIC18F parts would otherwise be incompatible. Key design consideration: the wide 2.0-5.5V supply range provides flexibility, but designers must respect Vdd minimums during A/D conversions (typically 3.0V for specified 10-bit accuracy); configure ADC acquisition time accordingly. This page consolidates distributor stock data, parametric drop-in alternatives, and engineering design notes drawn from Microchip documentation to help embedded engineers select and qualify the PIC18LF4423 quickly.

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PIC18LF4423T-I/ML - 8-bit 40MHz 16KB Flash MCU | Microchip
PIC18LF4423T-I/ML

PIC18LF4423T-I/ML - 8-bit 40MHz 16KB Flash MCU | Microchip

The Microchip Technology PIC18LF4423T-I/ML is an 8-bit PIC18 family RISC microcontroller delivering 16 KB of Flash program memory and 768 bytes of SRAM, housed in a 44-pin QFN package with exposed pad (ML suffix). Operating from 2.5 V / 3.3 V / 5 V supplies, the device runs at up to 40 MHz and integrates 34 I/O pins, a 10-bit ADC, nanoWatt power-management technology, and an enhanced FLASH memory architecture. The "LF" prefix denotes the wide-voltage F-grade core designed for low-power applications. A microcontroller (MCU) is a single-chip computer that integrates a CPU, memory, and peripherals. The PIC18 family is Microchip's enhanced 8-bit architecture, sitting between the baseline PIC10/12/16 families and the 16-bit PIC24/dsPIC line in Microchip's taxonomy (8-bit MCU -> PIC18 -> enhanced FLASH microcontroller -> semiconductor). The LF sub-family specifically targets battery-powered and energy-conscious designs with extended low-voltage operation. Key features include 16 KB (8K x 16) Flash, 768 bytes SRAM, 256 bytes EEPROM, 10-bit A/D converter with up to 13 input channels, 2 capture/compare/PWM modules, a USART, MSSP (SPI/I2C), 2 analog comparators, and nanoWatt technology that drops supply current below 1 microampere in sleep mode. The 44-pin QFN package has an exposed thermal pad for improved heat dissipation. The PIC18LF4423 architecture uses a Harvard design with separate program and data buses, an 8-bit ALU with hardware multiply support, and a 16-bit instruction word. The wide supply range (2.0 V to 5.5 V for the LF core, with the part characterized at 2.5 V / 3.3 V / 5 V) makes it suitable for both 3.3 V and 5 V systems. The nanoWatt power-management features include multiple idle modes, peripheral disable controls, and a real-time clock calibration circuit. Typical applications include industrial control panels, low-power sensor nodes, home appliances, automotive body electronics, HVAC controls, and USB/HID human-interface devices. The wide operating voltage makes the part especially attractive for battery-backed or unregulated-supply designs where the source voltage varies with load. When designing with this part, ensure the QFN exposed pad is soldered to the ground plane to meet thermal specifications. The device operates from -40 C to +85 C in the Industrial temperature range and supports in-circuit serial programming (ICSP) via two pins, enabling firmware updates in the field without removing the MCU. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes drawn from the manufacturer datasheet and authorized distributor listings - information not aggregated in any single manufacturer or distributor source.

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PIC18LF4423T-I/PT - 8-bit MCU, 16KB Flash, 40MHz, TQFP-44
PIC18LF4423T-I/PT

PIC18LF4423T-I/PT - 8-bit MCU, 16KB Flash, 40MHz, TQFP-44

The Microchip Technology PIC18LF4423T-I/PT is an 8-bit RISC PIC microcontroller featuring 16KB of Flash program memory, 768 bytes of RAM, and 256 bytes of EEPROM, housed in a 44-pin TQFP (10x10 mm) package. It operates up to 40 MHz delivering up to 16 MIPS, with a wide supply voltage range of 2.0V to 5.5V and 34 digital I/O lines, plus a 10-bit ADC and nanoWatt power management for low-power designs. A microcontroller (MCU) is a single-chip computer that integrates a CPU, RAM, non-volatile program memory, and peripheral interfaces. Within the broader taxonomy of embedded semiconductors, the PIC18 family sits above generic 8-bit MCUs and below 16/32-bit MCUs such as dsPIC and ARM Cortex-M parts. The 'LF' prefix in PIC18LF4423 denotes a wide-voltage, low-power variant of the F-series core, while 'nanoWatt' refers to Microchip's suite of power-saving modes including Sleep, Idle, and ultra-low-power ADC operation. The PIC18LF4423T-I/PT integrates a 10-bit A/D converter with up to 13 input channels, capture/compare/PWM modules, an Enhanced Universal Synchronous Asynchronous Receiver Transmitter (EUSART), Master I2C and SPI interfaces with Inter-Integrated Circuit bus support, and parallel slave port for external memory expansion. The integrated nanoWatt technology enables deep-sleep currents below typical PIC18 baselines, making it well-suited to battery-powered applications. Industrial-grade temperature range of -40C to +85C is supported via the 'I' designator. Architecturally, the device uses Microchip's RISC core with 77 instructions and a modified Harvard architecture providing separate program and data buses, plus an 8-level hardware stack. The 16KB Flash supports self-programming and In-Circuit Serial Programming (ICSP) via two pins. Internal oscillator options and a 16x8 hardware multiplier round out the engineer's toolset for cost-sensitive 8-bit designs. Typical applications include industrial control sensor interface boards, USB-interface bridges, small LCD display controllers, low-speed motor control drivers, and remote sensor nodes. The 16KB Flash and 10-bit ADC provide enough headroom for PID loops and basic signal conditioning without resorting to a 32-bit MCU. When designing with this part, pay attention to the 5.5V absolute maximum on VDD. Use decoupling capacitors of 0.1uF plus 10uF bulk close to the power pins, and ensure the MCLR reset line has a proper pull-up. For low-power Sleep mode, use the Run/Idle/Stop nanoWatt modes and shut down the ADC to achieve minimum quiescent draw. This page synthesizes distributor pricing, drop-in TQFP-44 alternatives, and practical PCB design notes not consolidated in the manufacturer datasheet, with cross-references back to Microchip's official PIC18LF4423 datasheet.

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PIC18LF442T-I/ML - 8-bit MCU, 16KB FLASH, 40MHz, 44-QFN | Microchip
PIC18LF442T-I/ML

PIC18LF442T-I/ML - 8-bit MCU, 16KB FLASH, 40MHz, 44-QFN | Microchip

The Microchip Technology PIC18LF442T-I/ML is an 8-bit RISC microcontroller from the PIC18 family featuring 16KB of FLASH program memory (8K x 16 words), 768 bytes of RAM, and 256 bytes of EEPROM data memory, operating at up to 40MHz from a 2.0V to 5.5V supply in a 44-pin QFN (ML) package. What is a PIC18 microcontroller? A PIC18 is an 8-bit microcontroller from Microchip Technology's PICmicro family using a Harvard architecture RISC core with a 16-bit instruction word and 8-bit data path. The PIC18 sits at the upper tier of the 8-bit PIC family, offering enhanced peripherals, C-optimized architecture, and self-programmability. Within the broader taxonomy: PIC18 -> 8-bit MCU -> microcontroller -> embedded controller -> semiconductor IC. The 'LF' prefix designates the low-voltage, low-power variant supporting 2.0V to 5.5V operation, while 'F' variants typically require 4.2V to 5.5V. Key features include 34 digital I/O pins, 10-bit multi-channel ADC, Capture/Compare/PWM (CCP) modules, two 8-bit and three 16-bit timers, USART, MSSP (SPI/I2C), 256 bytes of EEPROM, and an external oscillator interface up to 40MHz. The integrated nanoWatt technology provides power-managed modes for sleep, idle, and peripheral operation at microamp currents. The device supports In-Circuit Serial Programming (ICSP) and In-Circuit Debugger (ICD). The PIC18LF442 implements a modified Harvard architecture with a 16-bit program bus and an 8-bit data bus, achieving 10 MIPS at 40MHz. The 31-level hardware stack, 32 interrupt vectors, and 75 instructions (83 with extended instruction set) provide efficient C code generation. The 44-QFN (ML) package offers compact PCB integration with an exposed thermal pad for improved thermal dissipation. Typical applications include industrial control, low-power sensor nodes, HVAC thermostat controllers, battery chargers, automotive body electronics (non-safety), home appliances, and USB device interfaces. The wide operating voltage and low-power modes make it well-suited for energy-harvesting designs. When designing with this MCU, ensure the ICSP programming header follows Microchip's 6-pin layout (PGM/RB7, PGC/RB6, VPP/MCLR, VDD, VSS, NC). The 44-QFN package requires careful PCB land pattern design; refer to Microchip package drawings for proper thermal pad soldering. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the standalone manufacturer datasheet.

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PIC18LF4431-I/ML - 8-bit 40MHz 16KB Flash MCU | Microchip | 44-QFN
PIC18LF4431-I/ML

PIC18LF4431-I/ML - 8-bit 40MHz 16KB Flash MCU | Microchip | 44-QFN

The Microchip Technology PIC18LF4431-I/ML is an 8-bit PIC18F-family microcontroller running at 40 MHz with 16 KB (8K x 16) of enhanced flash program memory and 768 bytes of RAM, packaged in a 44-pin QFN (8x8 mm). The LF prefix designates the low-voltage variant with 2.0-3.6V VDD operation suitable for battery-powered designs, while the 1/ML suffix indicates the industrial temperature grade (-40C to +85C) and QFN surface-mount package. An 8-bit microcontroller (MCU) is a single-chip computer integrating a CPU, RAM, non-volatile program memory, and peripherals. The PIC18F architecture is a RISC-based Harvard design that executes most instructions in a single 200 ns cycle, achieving up to 10 MIPS throughput. Within the broader taxonomy, PIC18F sits between mid-range PIC16 and high-end dsPIC/32-bit MCUs, targeting cost-sensitive embedded control with strong interrupt handling and deterministic timing. Key features include 34 digital I/O pins, 10-bit ADC with up to 9 channels, multiple PWM modules with high-performance motion-feedback support (Power Control PWM), three 16-bit timers and one 8-bit timer, two comparators, an enhanced USART, MSSP (SPI/I2C), and nanoWatt power-management modes for sleep currents below 1 uA. The 44-QFN exposes 34 I/O while keeping board footprint compact at 8x8 mm with an exposed thermal pad for improved dissipation. The PIC18LF4431 uses Microchip's enhanced flash cell with self-programming support and an ICD-friendly debug interface. On-chip peripherals map to motion-control, motor-drive, and power-conversion functions — the device is part of the PIC18F2331/2431/4331/4431 family optimized for high-performance PWM feedback loops, making it a natural fit for BLDC, switched-mode power supply, and UPS control applications. Typical applications include BLDC and PMSM motor control, switch-mode power supply control, UPS and inverter control, industrial sensor conditioning, automotive body electronics, and low-power battery instruments. Designers use the on-chip 10-bit ADC for current/voltage sensing and the dedicated PWM module for driving power switches with programmable dead-band and fault input. When designing with this device, ensure the QFN exposed pad is soldered to a sufficient ground copper pour (typically 1 square inch or more) to meet the 4 W thermal dissipation capability of the package. Decouple VDD with a 100 nF ceramic placed within 5 mm of the IC, plus a bulk 10 uF tantalum or ceramic; the LF core needs a stable 3.3 V rail to avoid LVD-induced resets. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

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PIC18LF4431-I/P - 8-bit PIC18 40MHz 16KB Flash MCU | Microchip
PIC18LF4431-I/P

PIC18LF4431-I/P - 8-bit PIC18 40MHz 16KB Flash MCU | Microchip

The Microchip Technology PIC18LF4431-I/P is an 8-bit PIC18 family microcontroller with nanoWatt Technology, 16KB of Flash program memory, 768 bytes of RAM, and a 40 MHz maximum CPU clock, housed in a 40-pin PDIP (DIP-40) through-hole package. The part integrates a 10-bit Analog-to-Digital Converter, a high-performance PWM module suitable for motor control, and 34 digital I/O pins, all within an industrial temperature range of -40C to +85C. An 8-bit microcontroller (MCU) is a programmable integrated circuit that uses an 8-bit data path, executes instructions from on-chip Flash memory, and integrates CPU, RAM, non-volatile storage, and peripherals (ADC, PWM, timers, communication) into a single chip. The PIC18LF family sits above PIC16 in Microchip's 8-bit hierarchy and is widely used where deterministic interrupt response, low power, and proven toolchains matter more than raw compute. The 'LF' suffix designates the wide-voltage variant that operates across 2.0V-5.5V, while the 'F' (non-LF) version targets 4.2V-5.5V only. Key features include 16KB (8K x 16) Flash program memory, 768 bytes of data RAM, a 10-bit ADC with multiple channels, an enhanced CCP (Capture/Compare/PWM) module with up to 14-bit resolution for motor control, and nanoWatt Technology power management offering Sleep, Idle, and Run modes. The 40-pin PDIP package is the most legacy-friendly footprint in the PIC18 line and is preferred for prototyping, hobbyist designs, and educational platforms. The PIC18LF4431-I/P uses Microchip's enhanced Harvard RISC architecture with 16-bit instructions, 8-bit data, and a hardware multiplier, executing up to 10 MIPS at 40 MHz. Code is fetched from Flash through a 16-bit program bus while data moves on an 8-bit bus, which together enable single-cycle instruction execution and predictable timing for interrupt-driven firmware. Typical applications include three-phase induction motor control (BLDC, PMSM), HVAC fan and pump control, industrial automation, SMPS digital control loops, automotive body electronics (via the automotive-grade PIC18F4431-I/P sibling), and educational/development boards. The integrated high-resolution PWM and ADC are tuned specifically for closed-loop motor control firmware. When designing with this MCU, remember that 'LF' denotes the wide-voltage variant - do not swap it for the non-LF PIC18F4431 in 3.3V-only designs. Programming is done via ICSP through PGC/PGD pins, and MPLAB X IDE plus MPLAB XC8 are the supported toolchains. ESD-sensitive pins (especially analog inputs) require series resistors and clamping. This page synthesizes distributor pricing, drop-in alternative MPNs from the same PIC18 family, and practical design notes not consolidated in the manufacturer datasheet alone.

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PIC18LF4431-I/PT - 8-bit PIC MCU, 16KB Flash, 40MHz, 44-TQFP | Microchip
PIC18LF4431-I/PT

PIC18LF4431-I/PT - 8-bit PIC MCU, 16KB Flash, 40MHz, 44-TQFP | Microchip

The Microchip Technology PIC18LF4431-I/PT is an 8-bit PIC18 enhanced flash microcontroller with nanoWatt technology, integrating 16KB of program flash, 768 bytes of SRAM, a 10-bit ADC, and high-performance PWM peripherals in a 44-pin TQFP package. It features a 40 MHz maximum clock frequency, 34 digital I/O lines, and is engineered for low-power operation across an industrial temperature range of -40C to +85C. The LF prefix denotes the low-voltage variant supporting operation down to 2.0V. A microcontroller (MCU) is an integrated circuit that combines a CPU core, program memory, data memory, and peripheral interfaces on a single die, allowing embedded control of sensors, actuators, and communication buses. The PIC18 family belongs to the broader 8-bit RISC microcontroller hierarchy, which itself sits within the wider class of microcontrollers (MCU) -> embedded processors -> semiconductor devices. PIC18 MCUs implement a modified Harvard architecture with a 16-bit instruction word and 8-bit data path, optimized for deterministic interrupt latency and low-power sleep modes. Key features of the PIC18LF4431 include the nanoWatt power-management suite (multiple idle and sleep modes), a 10-bit ADC with up to 9 input channels, a 14-bit High-Speed PWM module suitable for motor control and power conversion, two USART modules for asynchronous and synchronous serial communication, an I2C/SPI peripheral pair, and an enhanced Capture/Compare/PWM (ECCP) module. The device supports in-circuit serial programming (ICSP) and in-circuit debugging (ICD) via Microchip's MPLAB toolchain, enabling rapid firmware iteration. Architecturally, the PIC18LF4431 uses Microchip's enhanced flash cell with a 100K erase/write cycle endurance and a typical data retention of greater than 40 years. The 8-bit data path and 16-bit instruction word deliver up to 10 MIPS at 40 MHz, with most single-word instructions executing in 4 clock cycles. Internal oscillator options and a wide operating voltage range (2.0V to 5.5V) provide design flexibility for battery-powered and industrial 24V-tolerant systems with external regulation. Typical applications include BLDC and brushed DC motor control, switched-mode power supply (SMPS) digital control loops, industrial sensor conditioning, HVAC fan control, LED lighting drivers, and automotive body/comfort subsystems. The 14-bit PWM with 60 ns resolution is especially valuable in digital power and motor-drive applications where fine duty-cycle granularity is required. Designers should note that the 5.5V absolute maximum on VDD requires a brown-out reset (BOR) configuration in firmware and adequate decoupling (100 nF + 10 uF bulk) within 5 mm of the supply pins. Migration between PIC18F and PIC18LF variants is straightforward because they share the same pinout, but the LF variant's lower minimum voltage (2.0V vs 4.2V) must be respected during firmware power-mode selection. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not found in the standalone manufacturer datasheet, giving engineers a single, citable reference for sourcing and substitution decisions.

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PIC18LF4431T-I/ML - 8-bit 40MHz 16KB Flash MCU 44-QFN | Microchip
PIC18LF4431T-I/ML

PIC18LF4431T-I/ML - 8-bit 40MHz 16KB Flash MCU 44-QFN | Microchip

The Microchip Technology PIC18LF4431T-I/ML is an 8-bit PIC RISC microcontroller operating at up to 40 MHz with 16 KB (8K x 16) of program Flash memory, packaged in a 44-lead QFN (8x8 mm) with exposed pad. It belongs to the PIC18F2331/2431/4331/4431 family and is the low-voltage (LF) variant optimized for 2.5V/3.3V/5V operation. The device integrates 768 bytes of RAM, 256 bytes of EEPROM, and 9 channels of 10-bit analog-to-digital conversion. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash/ROM), data memory (RAM), and a rich set of peripherals such as ADCs, timers, communication interfaces, and GPIO. The PIC18LF4431 belongs to the 8-bit PIC RISC family, sitting within the broader hierarchy 8-bit MCU -> microcontroller -> embedded controller -> semiconductor. Its modified Harvard architecture and 16-bit instruction word provide higher code density than many 8-bit peers, while the LF process node enables lower active and sleep current draw for battery-powered designs. Key features include an enhanced Flash program memory rated for typical 100K erase/write cycles, 10 MIPS sustained throughput at 40 MHz, multiple serial interfaces (I2C, SPI, UART/USART), a 10-bit ADC with up to 9 channels, and power-managed modes with fast wake-up. The 'T' suffix indicates Tape & Reel packaging and the 'I' suffix designates the industrial temperature grade of -40C to +85C, suitable for harsh environments. Typical applications include motor control (the 4331/4431 sub-family is specifically designed for closed-loop brushless DC and switched-reluctance motor drives), sensor conditioning, industrial automation, white goods, and general-purpose embedded control where low-power, low-voltage operation and a compact QFN footprint are required. When designing with this part, allocate sufficient PCB copper area beneath the exposed pad (EP) of the QFN-44 to meet thermal dissipation requirements and improve electrical grounding. Decouple VDD with at least 100 nF and 10 uF capacitors placed within 5 mm of the supply pins. The LF process limits maximum VDD to roughly 5.5 V, so verify rail tolerance if migrating from the F variant. This page synthesizes distributor pricing, drop-in 44-QFN alternatives, parametric comparison, and practical QFN PCB layout guidance that go beyond the raw manufacturer datasheet, helping engineers accelerate motor-control and general-purpose 8-bit designs.

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PIC18LF4439-I/ML - 8-bit 40MHz MCU, 12KB Flash, 44-QFN | Microchip
PIC18LF4439-I/ML

PIC18LF4439-I/ML - 8-bit 40MHz MCU, 12KB Flash, 44-QFN | Microchip

The Microchip Technology PIC18LF4439-I/ML is an 8-bit PIC microcontroller built on an enhanced RISC architecture, operating at up to 40 MHz with 12 KB of FLASH program memory (6K x 16) and 640 bytes of RAM, housed in a 44-pin QFN (8x8 mm) package with an exposed thermal pad. The 'LF' prefix denotes the extended low-voltage family supporting 2.0V-3.3V operation plus 5V-tolerant I/O, making it well suited to mixed-voltage designs and battery-powered applications. The PIC18 microcontroller is an 8-bit Harvard-architecture RISC MCU family originally developed by Microchip. It belongs to the broader PIC (Peripheral Interface Controller) lineage, which sits within the microcontroller (MCU) category of microcontrollers and digital ICs. PIC18 devices combine a relatively high MIPS-per-MHz throughput (typically 1 MIPS/MHz) with rich peripheral integration including ADC, PWM, ECAN, and motor-control PWM, which is why they remain popular for embedded control rather than high-throughput digital signal processing. Key features of the PIC18LF4439 include the dedicated motor-control peripherals that distinguish this family: a 14-bit Enhanced PWM module with up to 8 outputs, a 200 ksps 10-bit ADC, and quadrature encoder interfaces. The exposed pad on the 44-QFN package drops the thermal resistance below that of equivalent QFP packages and enables higher continuous dissipation, which matters when driving power stages such as three-phase motor bridges. Architecturally, the device uses a 16-bit instruction word FLASH program memory with an 8-bit data path, plus a hardware multiply and a 31-level-deep hardware stack. Its wide operating voltage range (2.0V to 5.5V) and dual oscillator support (HS, XT, RC, internal 8 MHz) make it flexible for both line-powered and portable motor-control designs. Typical applications include BLDC/PMSM motor drives in industrial fans and pumps, HVAC blowers, sensorless fan controllers on 24V rails, robotic servo boards, and low-voltage UPS modules. Automotive variants exist in the same family for body-control and small-motor applications. Key design consideration: place the 0.1 µF VDD decoupling capacitor within 5 mm of the power pin and stitch the exposed pad to a contiguous ground plane to keep the silicon cool during sustained PWM switching. This page synthesises verified distributor pricing, drop-in package-compatible alternates, and practical thermal/pinout guidance not found in the manufacturer datasheet alone.

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PIC18LF4439-I/P - 8-Bit 40MHz MCU 12KB Flash 40-PDIP | Microchip
PIC18LF4439-I/P

PIC18LF4439-I/P - 8-Bit 40MHz MCU 12KB Flash 40-PDIP | Microchip

The Microchip Technology PIC18LF4439-I/P is an 8-bit RISC microcontroller belonging to the PIC18F family, featuring 12KB (6K x 16) of FLASH program memory, 640 bytes of RAM, and 32 I/O pins, all housed in a 40-pin PDIP (DIP) through-hole package. It integrates a 40 MHz CPU core with an enhanced 16-bit instruction set and is designed for industrial temperature operation (-40C to +85C), making it suitable for harsh embedded environments. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, RAM, non-volatile program memory, and peripherals on a single die. The PIC18F family uses a Harvard-architecture RISC core with a 16-bit instruction word and 8-bit data path, sitting in the broader semiconductor hierarchy of microcontroller -> embedded processor -> semiconductor device. The 'LF' prefix designates low-voltage operation (typically 2.0V-3.6V), enabling battery-powered and portable designs where standard 5V PIC18F parts would be unsuitable. Key features include a 10-bit ADC with up to 8 channels, multiple PWM outputs suitable for motor control, a USART, MSSP (SPI/I2C), capture/compare/PWM modules, and dual analog comparators. The PIC18LF4439 also includes special motor-control peripherals, notably the Power Control PWM module and quadrature encoder interface, distinguishing it within the PIC18F lineup for motion-control applications. The architecture uses a Harvard-memory RISC core with hardware multiplier and 32-level stack, achieving up to 10 MIPS throughput at 40 MHz. The integrated motor-control PWM block delivers up to 14-bit resolution with center-aligned or edge-aligned modes, supporting complementary outputs with programmable dead-time insertion - a feature targeted at three-phase inverter designs. The 10-bit ADC with dual Sample-and-Hold enables simultaneous voltage and current sensing in FOC (field-oriented control) loops. Typical applications include BLDC motor control (single/three-phase), industrial drives, HVAC fan/blower controllers, home automation, low-power sensor platforms, and battery-powered instrumentation where the wide 2.0V-3.6V operating range is critical. When designing with this device, ensure proper decoupling (100 nF + 10 uF near VDD/AVDD pins) and that the MCLR pin is tied through a pull-up resistor with the standard ICSP layout for in-circuit serial programming retention. This page synthesizes distributor pricing, drop-in alternatives, parametric comparisons, and practical design notes for the PIC18LF4439-I/P that are not collated in the manufacturer datasheet alone.

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PIC18LF4439-I/PT - 8-bit MCU, 12KB Flash, 40MHz | Microchip
PIC18LF4439-I/PT

PIC18LF4439-I/PT - 8-bit MCU, 12KB Flash, 40MHz | Microchip

The Microchip PIC18LF4439-I/PT is an 8-bit PIC18F-family microcontroller (MCU) with 12KB of Flash program memory, 640 bytes of RAM, and a 40 MHz maximum core clock speed, housed in a 44-pin TQFP (PT) package rated for the industrial -40C to +85C temperature range. The LF prefix indicates the wide-voltage (2.0V to 5.5V) variant suitable for battery and low-power embedded designs, while the integrated 10-bit ADC with eight input channels and three serial interfaces (I2C, SPI, USART) provide flexible analog and digital connectivity. The PIC18 is an 8-bit RISC microcontroller family manufactured by Microchip Technology. Built on an enhanced Harvard architecture with separate program and data buses, the PIC18 family delivers up to 10 MIPS performance at 40 MHz, executes a 16-bit instruction word from Flash memory, and offers an instruction set optimised for C compiler code density. Within the broader semiconductor hierarchy, an MCU belongs to the embedded processor category and is distinct from a microprocessor in that peripherals, memory and interrupt controllers are integrated on-chip, reducing BOM cost and PCB area in volume designs. Key features include the in-system programmable Flash (12KB / 6K x 16 words) accessed via ICSP, a 10-bit successive-approximation ADC with eight input channels, three independent serial peripherals (I2C, SPI, USART), one 8-bit and three 16-bit timers, and up to 32 digital I/O pins. The PWM module is enhanced for motor-control and power-conversion applications, while the Capture/Compare/PWM peripherals support input measurement and waveform generation. Architecturally, the PIC18LF4439-I/PT uses an enhanced 16-bit instruction set with hardware multiply, eight-level deep hardware stack, and a vectored interrupt controller with multiple priority levels. The wide 2.0V to 5.5V supply range allows operation from single-cell Li-ion, two-cell alkaline, or regulated 3.3V/5V rails. Internal oscillator modes and a Phase-Locked Loop (PLL) reduce external component count, while the nanoWatt power-managed modes support sleep currents down to nanoampere levels. Typical applications include industrial motor control, sensor signal conditioning, appliance controls, HVAC fan controllers, lighting ballasts, automotive body electronics (non-safety), medical instrumentation, and consumer white goods. The wide operating voltage makes it suitable for battery-powered portable devices, while the PWM and capture modules support closed-loop control of brushless DC motors and switched-mode power converters. When designing with this MCU, allow for the decoupling capacitor network and a minimum ICSP header footprint if in-field firmware updates are required. Ensure the trace lengths between the crystal or external clock source and the OSC pins are short and guarded to preserve signal integrity and minimise EMI. The internal RC oscillator is sufficient for non-timing-critical tasks but should be replaced with a crystal when UART or PWM accuracy is required. This page synthesizes distributor pricing, pin-compatible alternatives drawn from the same Microchip PIC18 family, and practical design notes - information not found in the standalone manufacturer datasheet and curated specifically for engineers sourcing PIC18LF4439-I/PT for new designs or service replacements.

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PIC18LF4439T-I/ML - 8-bit MCU, 12KB Flash, 40MHz, 44-QFN | Microchip
PIC18LF4439T-I/ML

PIC18LF4439T-I/ML - 8-bit MCU, 12KB Flash, 40MHz, 44-QFN | Microchip

The Microchip PIC18LF4439T-I/ML is an 8-bit RISC microcontroller belonging to the PIC18F family, featuring 12KB (6K x 16) of Flash program memory, 640 bytes of RAM, and 256 bytes of EEPROM, operating at up to 40 MHz from a 2.0V to 5.5V supply in a 44-pin QFN (8x8 mm) package. Tape-and-reel packaged for high-volume manufacturing, it provides 36 digital I/O pins, a 10-bit Analog-to-Digital Converter with up to 8 channels, multiple PWM modules, and Microchip's nanoWatt Technology for dynamic power management. The "LF" suffix indicates the low-voltage variant designed for 2.0V-5.5V operation, while the "F" core delivers the enhanced instruction set and C-friendly architecture of the PIC18 family. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory, RAM, peripherals, and I/O on one die. The PIC18F family sits between Microchip's baseline PIC16 and the 16-bit dsPIC families, targeting applications that need more code space, more peripherals, and deterministic interrupt handling than an 8-bit baseline MCU but where cost and power must remain low. Within the power IC taxonomy, an MCU is a digital logic IC; within the broader semiconductor hierarchy it is part of the embedded computing category. Key features of the PIC18LF4439T-I/ML include a 40 MHz internal/external clock, hardware Multiply instruction, 16-bit wide instructions with an 8-bit data path, and 31-level hardware stack. The device integrates two CCP modules, one Enhanced CCP (ECCP) module for advanced PWM and full-bridge motor control, a USART with LIN support, an MSSP for SPI/I2C, and a 10-bit ADC with up to 8 channels. The nanoWatt Technology provides multiple idle/sleep modes that drop quiescent current below 1 microampere in deep sleep, enabling battery-friendly designs. The LF silicon process is optimized for low-voltage operation down to 2.0V, making the LF4439 suitable for 2x AA battery cells or single Li-ion applications with a 3.3V regulator. The 44-pin QFN (ML) package offers a compact 8x8 mm footprint with an exposed thermal pad for improved heat dissipation during sustained 40 MHz operation. Programming and in-circuit debugging are supported through Microchip's ICSP (In-Circuit Serial Programming) interface and the MPLAB ICD debugger family. Typical applications for the PIC18LF4439T-I/ML include motor control (BLDC, brushed DC, stepper) thanks to the ECCP full-bridge PWM, white goods and appliance control panels, low-power sensor nodes, USB-to-UART bridges where the USART is paired with an external USB transceiver, and industrial control requiring 5V-tolerant I/O. The part is particularly well suited to designs migrating from PIC16 to PIC18 without changing the supply voltage rail. When designing with this part, ensure the QFN exposed pad is soldered to a sufficient copper area (typically 1 square inch) for thermal dissipation. Decoupling must include a 100 nF ceramic on each power pin within 2 mm of the package, and a bulk 4.7-10 uF tantalum or ceramic on the main VDD rail. The configuration bits should be reviewed carefully to set the oscillator mode, watchdog state, and code protection before programming. This page consolidates distributor pricing, drop-in pin-compatible alternatives from Microchip's PIC18 family, and practical design notes that go beyond what the manufacturer datasheet alone provides.

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PIC18LF4439T-I/PT - 8-bit MCU, 12KB Flash, 44-TQFP | Microchip
PIC18LF4439T-I/PT

PIC18LF4439T-I/PT - 8-bit MCU, 12KB Flash, 44-TQFP | Microchip

The Microchip Technology PIC18LF4439T-I/PT is an 8-bit PIC microcontroller featuring 12KB of Flash program memory, 640 bytes of RAM, and 32 digital I/O pins, packaged in a 44-lead TQFP (Tape and Reel, Industrial temperature grade). It belongs to the PIC18F family of enhanced Flash microcontrollers and operates from a low-voltage supply range suitable for battery-powered and portable designs. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, RAM, Flash program memory, peripherals, and I/O onto one die. The PIC18F architecture (Harvard, RISC) executes one instruction per clock cycle (except branches) and is widely used for embedded control in industrial, consumer, and automotive applications. Within Microchip's hierarchy, the PIC18F family sits between baseline PIC10/12/16 parts and the 16-bit dsPIC/PIC24 families. Key features of the PIC18LF4439T-I/PT include enhanced Flash memory supporting self-programmability, an industrial operating temperature range of -40C to +85C, and a 44-pin TQFP surface-mount footprint. The part suffix -LF denotes the low-voltage (LF) process variant optimized for operation at reduced VDD, while the T indicates Tape and Reel packaging and I denotes the industrial temperature grade. Typical applications include motor control (the PIC18F4439 family integrates dedicated motor-control peripherals such as PWM and quadrature encoder interfaces), sensor interfacing, low-power industrial controllers, and consumer appliance control. The combination of 12KB Flash, 640 bytes RAM, and 32 I/O is well-suited to small control loops where deterministic timing and modest code size matter more than raw CPU throughput. When designing with this part, verify the supply voltage range against your application: the LF process variant typically operates down to ~2.0 V, while the standard F variant operates 4.2-5.5 V. Engineers should consult the PIC18F4331/4431 datasheet family, which shares the same peripheral set, for detailed electrical characteristics and timer configuration. This page synthesizes distributor pricing, same-family drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone, helping engineers and procurement teams select and source the PIC18LF4439T-I/PT with full context.

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PIC18LF4450-I/ML - 48MHz 8-bit USB MCU, 16KB Flash, 44-QFN | Microchip
PIC18LF4450-I/ML

PIC18LF4450-I/ML - 48MHz 8-bit USB MCU, 16KB Flash, 44-QFN | Microchip

The Microchip PIC18LF4450-I/ML is an 8-bit PIC18 microcontroller with integrated Full-Speed USB 2.0 (12 Mbit/s), 16 KB (8K x 16) of Flash program memory and 768 bytes of SRAM, housed in a 44-pin QFN (8x8 mm) package with exposed thermal pad. It operates from a wide 2.0 V to 5.5 V supply range, runs at up to 48 MHz (12 MIPS) and is rated for the industrial -40C to +85C temperature window. The LF suffix denotes the low-voltage / low-power variant of the PIC18F4450 family. An 8-bit microcontroller (MCU) is a self-contained compute subsystem on a single silicon die, integrating a CPU core, non-volatile program memory (Flash), volatile data memory (SRAM), digital peripherals (timers, UART, I2C, SPI, USB) and general-purpose I/O. The PIC18 family is the high-performance tier of Microchip's 8-bit MCU line, sitting above PIC10/12/16 in peripheral richness and instruction throughput. The LF sub-family trades absolute speed headroom for wider operating-voltage range and nanoWatt sleep modes, making it a fit for battery- and bus-powered edge devices. Key features include 10-bit ADC with up to 13 input channels, three counter/timers, a Capture/Compare/PWM module, an Enhanced USART (EUSART, LIN-capable), Master I2C and SPI (up to 10 Mbit/s), the Full-Speed USB 2.0 transceiver with on-chip SIE, and Microchip's nanoWatt power-management block with Idle, Sleep and deep-sleep modes. The 44-QFN (ML) package exposes 34 general-purpose I/O lines plus dedicated USB D+/D- pads, VUSB and the internal 3.3V USB regulator. Architecturally the PIC18LF4450 implements an enhanced Harvard RISC core with 16-bit instructions, a hardware multiplier (8x8 single-cycle) and a 31-level deep stack. The integrated USB SIE handles packet framing, CRC and the physical-layer signaling so the CPU is freed from bit-banging, dramatically lowering firmware complexity for HID, CDC and vendor-class USB applications. Typical applications include USB HID peripherals (keyboards, mice, custom joysticks), USB-to-UART bridges, low-power sensor nodes with USB charging, industrial data loggers, LIN slave nodes in automotive body controllers, and educational/development boards. The wide 2.0-5.5 V range lets the device run directly from a single Li-ion cell, two AA cells, or a 3.3 V regulated rail. When designing with this part, observe the PCB layout rules in Microchip AN233 (USB PCB layout) - the D+/D- traces must be 90 ohm differential, matched-length, and the VUSB decoupling capacitor must be within 5 mm of the VUSB pin. For self-powered designs, the internal 3.3 V USB regulator can be disabled via CONFIG and an external rail supplied to the VUSB pin. This page synthesizes current distributor pricing, drop-in same-package alternatives, and practical layout notes that go beyond the datasheet to speed USB-MCU bring-up.

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PIC18LF4450T-I/ML - 16KB Flash USB MCU 48MHz QFN-44 | Microchip
PIC18LF4450T-I/ML

PIC18LF4450T-I/ML - 16KB Flash USB MCU 48MHz QFN-44 | Microchip

The Microchip Technology PIC18LF4450T-I/ML is an 8-bit RISC microcontroller featuring 16KB of enhanced Flash program memory, 768 bytes of RAM, and an integrated Full-Speed USB 2.0 transceiver, housed in a 44-pin QFN package (8x8 mm) with exposed thermal pad. It delivers 12 MIPS performance at 48 MHz clock speed and operates from 2.0V to 5.5V supply. A USB microcontroller is a specialized MCU that integrates a USB transceiver and serial interface engine (SIE) directly on-chip, eliminating the need for an external USB PHY. It belongs to the broader category of embedded controllers within the microcontroller -> 8-bit MCU -> PIC18 family -> USB-capable MCU hierarchy. The 'LF' prefix denotes a low-voltage variant optimized for battery-powered and low-power applications using Microchip's nanoWatt technology, while the 'F' architecture provides enhanced Flash with self-programming capability. Key features include 34 digital I/O pins, 13-channel 10-bit ADC, two analog comparators, two CCP modules, one enhanced USART, MSSP (SPI/I2C), and hardware multiply. The device supports ICSP (In-Circuit Serial Programming) and ICD (In-Circuit Debugger) for development workflows. nanoWatt power management provides multiple idle and sleep modes with current consumption under 1 microamp in sleep, suitable for USB bus-powered and battery applications. The integrated USB 2.0 Full-Speed transceiver supports low-speed (1.5 Mbps) and full-speed (12 Mbps) operation with on-chip SIE handling protocol, leaving the CPU free for application code. Typical applications include USB peripherals (HID-class devices, CDC virtual COM ports, mass storage), industrial control interfaces with USB diagnostics ports, USB-to-UART bridges, embedded data loggers with USB download, and battery-powered handheld instruments. The wide 2.0-5.5V supply range also supports both 3.3V and 5V system designs without level translation. When designing with this device, ensure the USB D+/D- traces are routed as a 90-ohm differential pair with characteristic impedance controlled to USB 2.0 specification. The internal 3.3V USB voltage regulator requires adequate decoupling (220 nF plus 100 uF bulk) per the datasheet reference design. The exposed thermal pad (EP) must be soldered to a ground plane for electrical and thermal performance. This page synthesizes distributor pricing, drop-in alternatives from the Microchip PIC18 family, and practical design notes not found in the manufacturer datasheet alone.

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PIC18LF4450T-I/PT - 8-Bit 48MHz USB MCU, 16KB Flash, TQFP-44 | Microchip
PIC18LF4450T-I/PT

PIC18LF4450T-I/PT - 8-Bit 48MHz USB MCU, 16KB Flash, TQFP-44 | Microchip

The Microchip Technology PIC18LF4450T-I/PT is an 8-bit RISC PIC18F-family microcontroller integrating a Full-Speed USB 2.0 transceiver, 16KB of enhanced Flash program memory (organized as 8K × 16), and 768 bytes of RAM, all housed in a 44-pin TQFP (10 × 10 mm) package. It executes instructions at up to 48 MHz (12 MIPS) and operates from a 2.0 V to 5.5 V supply, making it compatible with both 3.3 V and 5 V rails common in mixed-signal designs. An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit data-path CPU, on-chip program memory (ROM/Flash), data RAM, and a mix of peripherals such as timers, ADC, communication interfaces, and I/O pins. Within the broader taxonomy, the PIC18LF4450 belongs to the PIC18F high-performance flash family, which sits between baseline PIC10/12/16 parts and 16-bit PIC24/dsPIC devices, and is part of Microchip's microcontroller -> MCU -> embedded controller -> semiconductor hierarchy. The 'LF' prefix designates the low-voltage / low-power variant of the PIC18F4550. Key features include 34 digital I/O pins, integrated Full-Speed USB 2.0 device/host/OTG transceiver with on-chip voltage regulator, 10-bit ADC, Enhanced Universal Synchronous Asynchronous Receiver Transmitter (EUSART), Master Synchronous Serial Port (MSSP) for SPI and I2C, and nanoWatt Technology power management with multiple idle/sleep modes. The Enhanced Flash offers 100K erase/write cycle endurance typical and program retention exceeding 40 years. Architecturally, the PIC18LF4450 uses a 16-bit instruction word (8K × 16 = 16KB) with an 8-bit data path, Harvard architecture, and a hardware multiply unit. The integrated USB SIE handles low-level protocol, freeing the core from bit-banging and enabling CDC, HID, MSD and custom class firmware. The on-chip 3.3 V regulator provides up to 250 mA to external logic when the device is powered from 5 V. Typical applications include USB peripherals (HID mice/keyboards, CDC serial bridges, MSD card readers), industrial control with USB diagnostics, embedded data loggers, and battery-powered sensor nodes. Designers value the part for collapsing a separate USB bridge chip and external LDO into a single MCU footprint. When designing in the PIC18LF4450, ensure the 48 MHz HS oscillator uses the correct crystal and load capacitors, add a 1 µF bulk capacitor at VUSB and VDD, and reserve the D+/D- lines with 90-ohm differential routing. For low-power targets, leverage nanoWatt sleep modes and the on-board low-power Timer1 oscillator to reduce quiescent current below 1 µA. This page synthesizes distributor pricing, parametric comparisons with PIC18F4550 and PIC18F46J50 drop-in alternatives, and practical design notes not collocated in the manufacturer datasheet.

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