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PIC18LF45J10-I/P - 8-bit 40MHz 32KB Flash MCU | Microchip
PIC18LF45J10-I/P

PIC18LF45J10-I/P - 8-bit 40MHz 32KB Flash MCU | Microchip

The Microchip Technology PIC18LF45J10-I/P is an 8-bit RISC microcontroller in the PIC18J family, integrating 32KB of Flash program memory and 1024 bytes of SRAM in a 40-pin PDIP (DIP) through-hole package. It executes instructions at up to 40 MHz from a 2.0V to 3.6V supply, providing low-voltage operation suitable for battery-powered and portable designs. The 'LF' prefix indicates the extended low-voltage flavor of the family; the non-LF PIC18F45J10 variant supports 2.0V to 5.5V. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory, data memory, and peripherals onto one silicon die. Within the broader taxonomy, the PIC18LF45J10 belongs to the 8-bit MCU category, then to the PIC18 family of enhanced Harvard-architecture devices, then to the Microchip PIC microcontroller family, and finally to the broader class of embedded microcontrollers and microprocessors. Its 8-bit data path is paired with a 16-bit instruction word that enables single-cycle execution of most operations, delivering higher throughput than legacy PIC16 designs at the same clock rate. Key features include a 10-bit ADC with multiple input channels, two enhanced USART peripherals (one with LIN master/slave support), two MSSP (Master Synchronous Serial Port) modules capable of SPI and I2C (with address masking), a 32-segment LCD driver option on sibling parts, and 32 general-purpose digital I/O pins arranged across multiple ports. An integrated oscillator, two 8-bit timers, and three 16-bit timers provide flexible timekeeping, while the nanoWatt power management feature with multiple idle and sleep modes helps reduce quiescent current to single-digit microamps for power-sensitive applications. Typical applications include industrial control nodes, low-cost consumer appliances, sensor conditioning front-ends, USB-to-UART bridges using external transceivers, and educational/development platforms. The wide software ecosystem (MPLAB X IDE, XC8 compiler, MPLAB Code Configurator) and the rich peripheral set make the part a popular choice for replacing older PIC16 designs that require more code space and higher clock speed. When designing with the PIC18LF45J10-I/P, observe the 3.6V absolute maximum on VDD, place a 100 nF decoupling capacitor adjacent to each power pin, and ensure in-circuit serial programming (ICSP) lines are brought out to a header for production programming. Prefer the LF variant when operating from a single Li-ion cell (2.0V to 3.6V); otherwise, the non-LF PIC18F45J10 offers more headroom for 5V-tolerant designs. This page synthesizes distributor pricing, parametric comparison data, and design notes that go beyond the manufacturer datasheet, including a curated drop-in alternative list of PIC18LF45K22 and PIC18LF45J11 options sharing the same 40-pin PDIP footprint for drop-in upgrades with more memory or peripherals.

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PIC18LF45J10-I/PT - 8-Bit 40MHz 32KB Flash MCU | Microchip
PIC18LF45J10-I/PT

PIC18LF45J10-I/PT - 8-Bit 40MHz 32KB Flash MCU | Microchip

The Microchip Technology PIC18LF45J10-I/PT is an 8-bit RISC microcontroller from the PIC18J family, integrating 32KB of Flash program memory, 1024 bytes of SRAM, and a 40 MHz CPU core in a 44-pin TQFP (10x10 mm) package with industrial-grade -40C to +85C temperature rating. What is an 8-bit PIC microcontroller? A PIC (Peripheral Interface Controller) is a family of microcontrollers built on a Harvard-architecture RISC core developed by Microchip. The PIC18 sub-family is the high-performance tier of the 8-bit portfolio, offering enhanced instruction set, linear program memory addressing up to 2 MB, and C-optimized architecture. PIC microcontrollers occupy the position: microcontroller -> embedded MCU -> semiconductor IC, and dominate low-power, deterministic real-time applications where simple peripherals and proven toolchains (MPLAB X IDE, XC8 compiler) are valued over raw compute. Key features of the PIC18LF45J10 include 32KB (16K x 16) Flash with self-programmability, 1KB RAM, 256 bytes EEPROM, 10-bit ADC with up to 13 channels, two enhanced USART modules (one with LIN support), two MSSP ports for SPI/I2C with I2C address masking, and nanoWatt power management for sleep currents under 100 nA typical. The LF suffix denotes the wide-voltage 2.0V to 3.6V operating range. The device uses an advanced RISC core with 16-bit instructions and 8-bit data path, a hardware multiplier, and a 31-level deep hardware stack. The nanoWatt technology provides multiple idle and sleep modes with on-the-fly clock switching between primary oscillator, internal 31 kHz, and 8 MHz INTOSC sources. Typical applications include consumer appliances, industrial sensor interfaces, USB-to-UART bridges, HVAC controls, low-cost data loggers, and battery-powered IoT sensor nodes. The integrated 10-bit ADC and dual serial interfaces make it well-suited for bridge and protocol-conversion roles. A key design consideration is that the LF variant requires VDD between 2.0V and 3.6V - if your system needs 5V I/O, choose the PIC18F45J10 (F-suffix) variant instead. For drop-in compatibility, ensure the same TQFP-44 footprint is retained, as the package pinout is shared with PIC18F45J10 and other PIC18 J-family 40/44-pin members. This page synthesizes distributor pricing, drop-in alternatives, and design notes not found in the manufacturer datasheet alone.

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PIC18LF45J10T-I/ML - 8-bit PIC MCU, 32KB Flash, 44-QFN | Microchip
PIC18LF45J10T-I/ML

PIC18LF45J10T-I/ML - 8-bit PIC MCU, 32KB Flash, 44-QFN | Microchip

The Microchip Technology PIC18LF45J10T-I/ML is an 8-bit PIC18J-series microcontroller with a 40 MHz core, 32 KB of Flash program memory organized as 16K x 16, and 1 KB of RAM, packaged in a 44-pin QFN (8x8 mm). It is the low-voltage 'LF' variant of the PIC18F45J10 family, designed to operate from a 2.0 V to 3.6 V supply while retaining the same peripheral set as its 5 V sibling. A PIC18 microcontroller is an 8-bit RISC MCU from Microchip's PIC18 family, which sits within the broader hierarchy: PIC18 -> 8-bit PIC -> microcontroller -> embedded processor -> semiconductor. The 'J' suffix indicates the J-series nanoWatt technology line, which adds ultra-low-power sleep modes and a 2.0 V minimum Vdd for battery-powered designs. PIC18 devices dominate hobbyist, industrial-control, and USB-embedded applications because of their deterministic instruction set, mature MPLAB X toolchain, and free XC8 compiler support. Key features of the PIC18LF45J10T-I/ML include 32 KB self-programmable Flash, 1 KB SRAM, 256 B of EEPROM-like data Flash, an internal 8 MHz and 31 kHz oscillator, two 8-bit timers plus three 16-bit timers, two capture/compare/PWM (CCP) modules, an enhanced USART (EUSART) with LIN support, master I2C and SPI peripherals, a 10-bit ADC with up to 13 channels, two analog comparators, and a CTMU module for capacitive touch sensing. On-chip safety peripherals include Brown-out Reset (BOR), Power-on Reset (POR), and a Watchdog Timer (WDT). Architecturally the part uses an enhanced Harvard architecture with a 16-bit instruction word and 8-bit data path, allowing single-cycle execution except for branches. The nanoWatt-extended J-series core supports multiple idle modes (Idle, Sleep, and deep Sleep with RTCC wake-up), enabling standby currents in the microamp range - critical for line-powered or battery-backed sensors. Typical applications include USB-to-UART bridges, low-power sensor nodes with capacitive touch HMI, industrial control panels using the 10-bit ADC for analog monitoring, and consumer appliances requiring LIN or UART communication. The 44-QFN package gives 36 general-purpose I/O pins, sufficient for driving displays, keypads, and relay matrices. For designs requiring more memory or USB, the PIC18F46J11 / PIC18F47J53 in the same 44-pin pinout is a common upgrade path. When designing with the PIC18LF45J10T-I/ML, plan for a 3.3 V regulated rail; the LF variant does not run at 5 V. Place a 100 nF decoupling capacitor close to every Vdd pin and a 10 uF bulk cap on the regulator output. Configure the configuration bits for the internal 8 MHz oscillator with PLL to reach 40 MHz MIPS to avoid external crystal cost. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes that are not aggregated in any single manufacturer datasheet or distributor listing.

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PIC18LF45J10T-I/PT - 8-bit 40MHz MCU 32KB Flash | Microchip
PIC18LF45J10T-I/PT

PIC18LF45J10T-I/PT - 8-bit 40MHz MCU 32KB Flash | Microchip

The Microchip Technology PIC18LF45J10T-I/PT is a low-voltage 8-bit PIC18 microcontroller built on an enhanced RISC architecture, running up to 40 MHz and integrating 32 KB of Flash program memory (16K x 16) alongside 1 KB of RAM in a 44-pin TQFP (10x10 mm) package. The 'LF' prefix denotes the wide 2.0-3.6V operating range tailored for battery-powered and low-power designs, while the 'J' series implements the Microchip nanoWatt XLP feature set for deep sleep current reduction. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory, data RAM, and a configurable set of peripherals such as timers, ADC, communication interfaces, and I/O. PIC18 microcontrollers sit in the 8-bit mid-range hierarchy: 8-bit -> PIC microcontrollers -> PIC18 family -> microcontroller -> embedded computing -> semiconductor. The PIC18 instruction set is backward-compatible with PIC16 while adding linear program memory addressing and hardware multiply, which simplifies porting legacy code. Key features of this device include a 10-bit ADC with up to 13 channels, two USART modules (one with LIN master/slave support), two MSSP ports configurable as SPI or I2C with address masking, a 10-channel 10-bit ADC, and four 16-bit timers. Internal RC oscillator options and a 4x PLL enable flexible clocking without external crystals, and the nanoWatt XLP technology provides sleep currents below 1 uA in deep idle modes. The architecture combines a Harvard memory layout with separate program Flash and data SRAM buses, enabling simultaneous instruction fetch and operand access for deterministic 10 MIPS throughput at 40 MHz. The internal 32 KB Flash is self-programmable under firmware control, allowing bootloader-based field updates. Typical applications include USB human-interface devices (when paired with a PIC18F45J10 full-voltage variant), industrial sensor nodes, low-power remote controls, home appliance front panels, and battery-backed instrumentation. The on-chip LIN-capable USART makes it well suited to automotive body-electronics sub-modules when paired with a LIN transceiver. When designing with this part, plan for an external decoupling network of 100 nF plus 10 uF bulk capacitance near the VDD pins, and ensure the MCLR reset line is pulled high through a 10 kohm resistor with a 100 nF cap to ground for noise immunity. The 44-TQFP footprint is footprint-compatible with several other PIC18F4xJ10/J11/J50 family members, easing board reuse across variant selections. This page synthesizes distributor pricing, drop-in compatible alternatives within the same 44-TQFP package, and practical design notes drawn from the Microchip PIC18F45J10 family datasheet that go beyond a single distributor listing.

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PIC18LF45J11T-I/ML - 48MHz 8-bit MCU 32KB Flash 44-QFN | Microchip
PIC18LF45J11T-I/ML

PIC18LF45J11T-I/ML - 48MHz 8-bit MCU 32KB Flash 44-QFN | Microchip

The Microchip Technology PIC18LF45J11T-I/ML is a low-power, high-performance 8-bit PIC18 microcontroller featuring 32KB Flash program memory, 4KB RAM, and a 48 MHz (12 MIPS) CPU core, housed in a 44-pin QFN (8x8 mm) package with an exposed thermal pad. The 'LF' prefix indicates the wide-voltage 2.0V to 5.5V supply range, while the 'J11' family adds USB 2.0 full-speed peripheral support. The 'T' suffix denotes Tape & Reel packaging for high-volume SMT assembly, and the 'I' indicates the industrial -40C to +85C operating temperature range. What is a PIC18 microcontroller? A PIC18 microcontroller is an 8-bit RISC (Reduced Instruction Set Computer) MCU from Microchip Technology's PIC18 family, sitting at the mid-range of Microchip's PIC microcontroller hierarchy. PIC18 -> 8-bit MCU -> microcontroller -> embedded processor -> semiconductor IC. The PIC18 core offers 77 instructions, hardware multiplier, 32-level stack, and C-friendly architecture, making it a step up from PIC16 in code density and interrupt handling while remaining more deterministic than 32-bit Cortex-M cores for simple real-time tasks. Key features of the PIC18LF45J11T-I/ML include a 10-bit ADC with up to 13 channels, multiple communication peripherals (USB 2.0 FS, two I2C/SPI, two USART with LIN support), four 8-bit/16-bit timers, two analog comparators, and nanoWatt XLP power-saving modes that drop current consumption below 100 nA in sleep. The 48 MHz internal oscillator eliminates the need for an external crystal in many designs, while the 44-QFN package provides a compact 8x8 mm footprint with excellent thermal dissipation through the exposed pad. The architecture uses a 16-bit instruction word with single-cycle execution for most instructions, giving an effective throughput of 12 MIPS at 48 MHz. The 32KB Flash supports self-programming and is partitioned into a bootloader region plus application code, while 4KB of SRAM supports data-heavy USB stacks and TCP/IP libraries. The integrated USB 2.0 full-speed transceiver and on-chip pull-up resistors remove the need for external USB PHY components in HID, CDC, or vendor-class device designs. Typical applications include USB human-interface devices (HID keyboards, mice, game controllers), USB-to-UART bridges and virtual COM ports, industrial sensor nodes with LIN bus, low-power battery-powered IoT endpoints, and consumer appliances requiring capacitive-touch or analog front-end support. The combination of USB, ample RAM, and XLP sleep current makes it well-suited for always-on peripherals that must wake on interrupt and serve a USB host. When designing with this device, note that the QFN-44 EP package requires reflow soldering and a thermal pad soldered to a ground copper pour for mechanical reliability. Programming is supported through Microchip's MPLAB X IDE with XC8 compiler; ICD3/Pickit 4 debug headers require dedicated pins (PGC/PGD) and may need isolation from application circuitry. Be sure to enable the internal weak pull-ups on unused pins to avoid floating-input current draw. This page consolidates distributor pricing, drop-in alternatives in the same 44-QFN footprint, and practical design notes not always visible in the manufacturer datasheet.

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PIC18LF45J11T-I/PT - 8-bit MCU, 32KB Flash, 4KB RAM | Microchip
PIC18LF45J11T-I/PT

PIC18LF45J11T-I/PT - 8-bit MCU, 32KB Flash, 4KB RAM | Microchip

The Microchip Technology PIC18LF45J11T-I/PT is a 24/40/44-pin high-performance 8-bit microcontroller based on the PIC18 architecture with 32 KB Flash program memory, 4 KB SRAM, and 48 MHz (12 MIPS) operation. It is supplied in a 44-pin TQFP (PT) package, supplied in tape and reel, and operates from 2.0V to 5.5V on the LF (low-voltage) process. An 8-bit microcontroller (MCU) is a programmable system-on-chip that integrates a CPU, Flash program memory, SRAM data memory, peripherals and I/O on a single die. PIC18 LF J11 series parts add nanoWatt Technology power management (multiple idle/sleep modes) and a full-speed USB 2.0 full-speed peripheral on the J11 die revision, extending the classic PIC18 family hierarchy (PIC10/12/16/18) into connected embedded nodes. Key features include 34 I/O pins, internal 31 kHz to 8 MHz oscillator with PLL, 10-bit ADC up to 13 channels, two USARTs, two MSSP (SPI/I2C) ports, and nanoWatt power-saving modes that drop typical run currents below 1 mA/MHz. Program memory is self-programmable under firmware control, enabling in-application upgrades. The LF (low-voltage) silicon supports 2.0V to 5.5V operation across -40C to +85C industrial temperature range, making the part a drop-in lower-power sibling of the F-version PIC18F45J11 (2.0V-3.6V-only). The TQFP-44 footprint supports hand-solderable prototyping and standard 0.8 mm-pitch PCB assembly. Typical applications include USB peripherals (HID, CDC), low-power sensor nodes, industrial control, consumer electronics, and battery-powered instrumentation where nanoWatt idle currents and USB connectivity matter. When designing, ensure the 5.5V VDDMAX is respected under USB bus-powered transient conditions, and add bulk decoupling per the PIC18 LF J11 family datasheet. This page synthesizes distributor pricing, drop-in same-package alternatives, and engineering guidance not found in the manufacturer datasheet alone.

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PIC18LF45J50-I/ML - 8-Bit USB MCU, 32KB Flash, 44-QFN | Microchip
PIC18LF45J50-I/ML

PIC18LF45J50-I/ML - 8-Bit USB MCU, 32KB Flash, 44-QFN | Microchip

The Microchip Technology PIC18LF45J50-I/ML is an 8-bit PIC18 microcontroller with integrated Full-Speed USB 2.0, 32KB Flash program memory and 4KB RAM, housed in a 44-pin QFN-EP (8x8 mm) package with exposed thermal pad. It belongs to the PIC18 J-family of nanoWatt XLP extreme-low-power devices, runs at up to 48 MHz internal clock, and operates from a 2.0-3.6 V supply, making it well suited to battery-powered and USB-powered designs. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory, working RAM, and a configurable set of peripheral blocks (I/O, timers, communications, ADC) into one package. The PIC18LF45J50-I/ML sits in the sub-hierarchy: microcontroller -> 8-bit MCU -> PIC18 family -> PIC18 J-series (USB) -> power-managed (LF / nanoWatt XLP) variants. The 8-bit PIC18 core uses an enhanced Harvard RISC architecture with a 16-bit instruction word, which gives higher code density than 8-bit instruction word cores while keeping the silicon footprint small. Key features of this part include 32 KB (16K x 16) of self-programmable Flash, 4 KB RAM, a 10-channel 10-bit ADC, two analog comparators, two CCP/ECCP modules, two USART, two MSSP (I2C/SPI), a Full-Speed USB 2.0 device/host/OTG transceiver with on-chip pull-ups, up to 32 mA source/sink on I/O, and nanoWatt XLP power management that drops quiescent current to roughly <100 nA in Sleep with RTCC. The 44-QFN-EP package offers a small 8x8 mm footprint and a thermal pad for better dissipation in space-constrained USB dongles. Typical applications are Full-Speed USB peripherals, USB-to-UART bridges, USB HID/CDC devices, low-power battery sensors, and small industrial control nodes where the integrated USB PHY saves an external chip. The exposed pad on the QFN-EP package must be soldered to the ground plane for both electrical grounding and thermal dissipation. When designing with this part, place the 12 MHz crystal or resonator and its load capacitors within a few millimetres of the OSC1/OSC2 pins to avoid noise coupling into the USB PLL, and follow Microchip's USB 2.0 stack guidelines (impedance-controlled 90 ohm differential D+/D- traces, common-mode choke) to pass USB compliance. The LF prefix means the part uses the lower-voltage process; do not power it above 3.6 V or you will damage the device. This page synthesises verified distributor pricing, drop-in same-package alternatives, and practical design notes for the PIC18LF45J50-I/ML that are not bundled together in the manufacturer datasheet, giving procurement and firmware engineers a single reference point for sourcing and substitution decisions.

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PIC18LF45J50-I/PT - 8-bit USB MCU, 32KB Flash, 44-TQFP | Microchip
PIC18LF45J50-I/PT

PIC18LF45J50-I/PT - 8-bit USB MCU, 32KB Flash, 44-TQFP | Microchip

The Microchip Technology PIC18LF45J50-I/PT is an 8-bit PIC18 microcontroller featuring a 48 MHz internal clock, 32 KB Flash program memory, and an integrated full-speed USB 2.0 transceiver, housed in a 44-pin TQFP (10x10 mm) package. It belongs to the PIC18 J-series "XLP nanoWatt" family and operates from 2.0 V to 3.6 V, delivering 12 MIPS throughput while consuming deep-sleep currents as low as 13 nA. An 8-bit microcontroller (MCU) is a small, self-contained computer-on-a-chip that integrates a CPU, RAM, non-volatile program memory, and peripheral interfaces on a single die. PIC microcontrollers use a Harvard RISC architecture with separate program and data buses, which allows the CPU to fetch an instruction and a data operand in the same cycle. The PIC18 family extends the baseline PIC16 instruction set with C-friendly addressing, a hardware multiplier, and 16-bit instruction words, positioning PIC18LF45J50-I/PT inside the broader hierarchy of 8-bit MCU -> PIC microcontroller -> Microchip MCU portfolio -> embedded computing platform. Key features include 32 KB self-programmable Flash, 3.8 KB RAM, full-speed USB 2.0 with on-chip transceiver, 13-channel 10-bit ADC, two analog comparators, two UART/SPI/I2C modules, and nanoWatt XLP deep-sleep modes. The device supports 34 digital I/O pins, 2 CCP modules, and an Enhanced Capture/Compare/PWM peripheral for motor and lighting control. Real-Time Clock/Calendar with software-calibrated 32 kHz source is also integrated. Architecturally, the PIC18LF45J50-I/PT pairs the standard PIC18 pipeline with a wide operating voltage range, an internal 31 kHz to 8 MHz oscillator block, and a 4x PLL to reach 48 MHz. The on-chip USB SIE handles full-speed and low-speed signaling without an external PHY, while nanoWatt XLP technology gates unused peripherals to achieve the 13 nA sleep figure, which is critical for battery-powered USB peripherals. Typical applications include USB HID peripherals (keyboards, mice, joysticks), battery-powered sensors, industrial data loggers, USB-to-UART bridges, and low-power embedded control nodes. The wide temperature range (-40C to +85C industrial grade) also suits factory automation modules and consumer-electronics accessories. When designing with this part, place the 12 MHz external crystal or use the internal 8 MHz HFINTOSC with 4x PLL close to the OSC pins, keep D+/D- trace lengths matched within 50 mil, and follow Microchip's "PIC18F46J50 Family Data Sheet" guidelines for USB-IF compliance testing. This page synthesizes distributor pricing, same-family drop-in alternatives, USB design notes, and a 44-pin TQFP pinout diagram that are not co-located on any single manufacturer or distributor page.

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PIC18LF45J50T-I/ML - 8-bit USB MCU, 32KB Flash, 44-QFN | Microchip
PIC18LF45J50T-I/ML

PIC18LF45J50T-I/ML - 8-bit USB MCU, 32KB Flash, 44-QFN | Microchip

The Microchip Technology PIC18LF45J50T-I/ML is an 8-bit PIC18 microcontroller featuring integrated full-speed USB 2.0, 32KB of Flash program memory, 4KB of RAM, and a 48 MHz internal oscillator, all packaged in a 44-pin QFN with exposed pad (8x8 mm) for tape-and-reel delivery. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory, data RAM, and a rich set of peripherals. The PIC18 family uses an enhanced Harvard RISC architecture optimized for deterministic real-time control and low-power operation, sitting within Microchip's broader 8-bit MCU portfolio (PIC10/12/16/18) that is widely deployed in consumer, industrial, and USB-connected embedded systems. Key specifications include 32KB (16K x 16) of self-programmable Flash, 4KB RAM, 256 bytes of EEPROM, a 10-bit ADC with up to 13 channels, two USB transceivers (full-speed 12 Mbps and low-speed 1.5 Mbps), nanoWatt XLP power management, and an extended operating voltage range of 2.0V to 3.6V suited to battery-powered designs. The architecture combines a modified Harvard bus with a 16-bit instruction word and 8-bit data path, achieving up to 16 MIPS throughput at 48 MHz. The integrated USB peripheral handles physical-layer signaling in hardware, eliminating external transceivers and reducing BOM cost for HID, CDC, and vendor-class USB device applications. Typical applications include USB peripherals (HID keypads, game controllers, CDC virtual COM ports, MIDI adapters), low-power sensor data loggers, portable medical and instrumentation devices, and battery-powered industrial IoT nodes that require direct USB connectivity without external PHY chips. When designing with this device, allocate the bottom 8KB of Flash for the USB bootloader to enable field firmware upgrades via USB. Ensure the exposed pad (EP) is soldered to a sufficiently large copper pour for thermal dissipation, as the QFN package relies primarily on PCB heat spreading. This page synthesizes current distributor stock and pricing, drop-in same-package alternatives, and practical design notes not collected together in the manufacturer datasheet.

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PIC18LF45K22-E/ML - 8-bit 48MHz 32KB Flash MCU | Microchip
PIC18LF45K22-E/ML

PIC18LF45K22-E/ML - 8-bit 48MHz 32KB Flash MCU | Microchip

The Microchip Technology PIC18LF45K22-E/ML is a 44-pin, 8-bit PIC18 microcontroller built on Microchip's nanoWatt XLP low-power technology, offering up to 48 MHz operation, 32 KB of Flash program memory, 1.5 KB of RAM, and 256 bytes of EEPROM in a 44-lead QFN (8x8 mm) package with extended (-40C to +125C) operating temperature. The 'LF' prefix indicates a wide-voltage F-variant core operating from 1.8 V to 3.6 V, while the 'E' suffix marks the extended-temperature grade. An 8-bit microcontroller (MCU) is a single-chip computer that integrates an 8-bit CPU core, Flash program memory, RAM, EEPROM, and a rich set of digital and analog peripherals into one package. MCUs sit at the top of the embedded device hierarchy: they are descendants of microprocessors that have absorbed nearly every supporting component, becoming self-contained 'system on chip' building blocks for embedded products. The PIC18LF45K22 belongs to the PIC18 family, which targets low-power and high-pin-count applications. Key features include nanoWatt XLP sleep currents below 100 nA, two Enhanced USART modules for simultaneous serial communication, two MSSP peripherals supporting both I2C and SPI, a 12-bit A/D converter with up to 28 channels, multiple 16-bit timers, and CTMU charge-time measurement for capacitive touch. The device also integrates a 64 MHz internal oscillator, programmable reference and comparator modules, and self-programming Flash for bootloader designs. Typical applications include low-power battery sensors, USB-less human-interface panels, HVAC controls, industrial data loggers, and capacitive-touch front panels where the CTMU simplifies the touch firmware. Designers also use it in portable medical accessories, e-metering, and home appliances. When designing with the PIC18LF45K22-E/ML, place the VDD/VSS bulk and bypass capacitors within 5 mm of the pins and reserve the exposed pad (EP) for thermal and ground connection. Verify your compiler is MPLAB XC8-aware and that your programmer supports ICSP on the four-pin PGx/PGC/PGD/MCLR interface. This page consolidates distributor pricing, parameter-matched drop-in alternatives, and practical design notes for the PIC18LF45K22-E/ML that go beyond what is in the Microchip datasheet. All cross-references, current pricing, and lifecycle signals were re-verified on 2026-09-29.

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PIC18LF45K22-E/MV - 8-bit PIC XLP MCU 32KB Flash 48MHz | Microchip
PIC18LF45K22-E/MV

PIC18LF45K22-E/MV - 8-bit PIC XLP MCU 32KB Flash 48MHz | Microchip

The Microchip Technology PIC18LF45K22-E/MV is an 8-bit PIC18 microcontroller featuring 32 KB (16K x 16) of Flash program memory, 1536 bytes of RAM, and 256 bytes of EEPROM, running at up to 48 MHz. It is housed in a 40-pin UQFN (5x5 mm) package with exposed pad (MV suffix) and operates from 1.8 V to 3.6 V, making it a member of the nanoWatt XLP (eXtreme Low Power) family. A microcontroller (MCU) is a single-chip computer containing a CPU, Flash program memory, SRAM data memory, EEPROM, and a rich set of peripherals such as ADC, timers, UART, I2C, and SPI. The PIC18LF45K22 belongs to Microchip's PIC18 8-bit family, which sits below the 16-bit dsPIC/PIC24 families and above the PIC16 baseline family in Microchip's 8-bit microcontroller hierarchy. The "LF" prefix indicates the low-voltage (1.8-3.6 V) variant, while the "K" series adds the enhanced peripherals and XLP power-saving features. Key features include 10-bit ADC with up to 28 channels, 36 digital I/O pins, 4 timers, 2 comparators, an enhanced PWM module, mTouch capacitive-touch support, and nanoWatt XLP technology offering sleep currents as low as a few nA. The 40-pin UQFN package integrates an exposed thermal pad to improve theta-JA, while the small 5x5 mm footprint suits compact handheld and battery-powered designs. Internally, the PIC18LF45K22 uses a RISC-based Harvard architecture with a 16-bit instruction word and an 8-bit data path. It supports hardware multiply, prioritised interrupts, peripheral pin-select (PPS), and a wide peripheral set including USB-ready comparators and SPP/EUSART modules. XLP power management enables multiple sleep modes with fast wake-up, making it suitable for always-on sensor applications. Typical applications include consumer electronics such as wearable health monitors, small appliance controllers, and USB peripherals; industrial sensor nodes and metering; low-power IoT edge nodes; automotive body controllers; and educational/development platforms. Designers leverage its rich peripheral mix to minimise external components. When designing with this part, observe the 1.8 V minimum supply to ensure Flash program/erase reliability, and use a 1 uF + 100 nF bulk-decoupling pair within a few millimetres of the VDD pins. Program/debug interfaces use ICSP over PGED1/PGEC1, supported by MPLAB X IDE and PICkit/Snap tools. This page synthesises distributor pricing, drop-in alternatives from Microchip's PIC18 K22 family, and practical design notes not collected in a single place in the manufacturer datasheet, providing a single reference for component selection.

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PIC18LF45K22-E/P - 32KB Flash XLP 8-bit MCU, 40-PDIP | Microchip
PIC18LF45K22-E/P

PIC18LF45K22-E/P - 32KB Flash XLP 8-bit MCU, 40-PDIP | Microchip

The Microchip Technology PIC18LF45K22-E/P is a low-power, high-performance 8-bit PIC microcontroller in the nanoWatt XLP family, housed in a 40-pin PDIP (Plastic DIP) through-hole package. It integrates 32KB of Flash program memory (16K x 16 words), 2KB of RAM, and 256 bytes of EEPROM, and executes instructions at up to 48 MHz. The device operates from a wide 1.8 V to 3.6 V supply rail, making it ideal for battery-powered and energy-harvesting applications. What is a microcontroller? A microcontroller (MCU) is a single-chip computer that combines a CPU core, non-volatile program memory (Flash), working memory (RAM), data EEPROM, and a rich set of on-chip peripherals (ADC, timers, communication ports, comparators, PWM). PIC18 microcontrollers belong to the 8-bit Harvard-architecture family and sit inside the broader category of embedded microcontrollers -> microcontrollers -> integrated circuits -> semiconductors, and the nanoWatt XLP line represents Microchip's ultra-low-power extension of that family. Key features of the PIC18LF45K22-E/P include nanoWatt XLP technology for sub-µA sleep currents, two Enhanced USART modules, two MSSP (SPI/I2C) modules, a 10-bit ADC with up to 28 input channels, and up to 36 digital I/O pins. Internal oscillator options (up to 16 MHz) and on-chip voltage reference simplify BOM, while the integrated CTMU (Charge Time Measurement Unit) enables touch and capacitive sensing. The architecture separates program and data buses (Harvard), features a 16-bit instruction word, and supports hardware multiply and 31-level priority interrupts. With XLP deep-sleep currents as low as 20 nA (typical, per datasheet), the device is engineered for long-battery-life designs and includes nanoWatt XLP sleep and idle modes. Typical applications include low-power sensor nodes, portable instrumentation, battery-powered medical devices, industrial control panels, USB-CDC peripherals, and educational/development platforms. The 40-pin PDIP package is also preferred for prototyping and hobby applications through-hole assembly is convenient. A critical design tip: the 'E' suffix denotes the Extended temperature range (-40C to +125C); use the '-I/' variant only for commercial 0C to +85C designs. The PIC18LF45K22-E/P (PDIP) is recommended for new designs and replaces the older PIC18F452 in most 40-pin DIP footprints, although peripheral mapping must be verified. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

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PIC18LF45K22-E/PT - 8-bit XLP MCU 32KB Flash 44-TQFP | Microchip
PIC18LF45K22-E/PT

PIC18LF45K22-E/PT - 8-bit XLP MCU 32KB Flash 44-TQFP | Microchip

The Microchip PIC18LF45K22-E/PT is an 8-bit PIC18 microcontroller from the nanoWatt XLP family, featuring 32KB of Flash program memory, 1536 bytes of RAM, and 256 bytes of EEPROM, housed in a 44-pin TQFP (10x10 mm) package. It operates at up to 48 MHz (12 MIPS) from a 1.8V to 3.6V supply, with the "LF" prefix denoting the low-voltage variant and the "E" suffix indicating the -40C to +125C extended industrial temperature grade. What is an 8-bit PIC microcontroller? A PIC (Peripheral Interface Controller) is a Harvard-architecture RISC microcontroller originally developed by General Instrument and now produced by Microchip Technology. The PIC18F/LF family extends the original PIC16 baseline with linear memory, a 16-bit instruction word, and a richer peripheral set, while the "LF" voltage range (1.8V to 3.6V) is optimized for battery-powered designs. PIC microcontrollers sit within the broader taxonomy: microcontroller -> embedded controller -> semiconductor -> integrated circuit. Key features of the PIC18LF45K22-E/PT include 32KB (16K x 16) of self-programmable Flash, 1536 bytes of SRAM, and 256 bytes of data EEPROM. The device integrates multiple communication peripherals: two EUSART (Enhanced USART) modules, two MSSP (Master Synchronous Serial Port) modules supporting SPI and I2C, a 12-bit A/D converter with up to 28 channels, and a 5-bit DAC. Its nanoWatt XLP technology provides deep-sleep currents as low as 20 nA typical, making it one of the lowest-power PIC18 variants for energy harvesting or battery-backed applications. At the architectural level, the PIC18LF45K22-E/PT uses a 16-bit enhanced instruction set with hardware multiply and a C-optimized architecture. The core provides an 8 x 8 hardware multiplier, a single-cycle instruction path, and a vectored interrupt controller supporting multiple priority levels. Two capture/compare/PWM modules and one enhanced CCP module enable motor-control, lighting, and power-conversion timing functions. Typical applications include low-power sensor nodes, battery-powered IoT edge devices, portable medical instruments, automotive body and climate modules, industrial control panels, and USB/HID human-interface devices. The combination of low quiescent current, generous RAM for protocol stacks, and a 12-bit ADC makes it a versatile main controller for cost-sensitive embedded designs. A key design consideration is the LF voltage range - this part MUST NOT be used above 3.6V on VDD. If your design requires 5V tolerance, choose the PIC18F45K22 (5V variant) instead. Also confirm TQFP-44 PCB layout footprint matches your existing land pattern, as the same die is offered in 28-pin QFN, 40-pin PDIP, and 44-pin TQFP packages. This page synthesizes distributor pricing across 9 distributors, drop-in alternative comparisons, and practical nanoWatt XLP design notes not always covered in the manufacturer datasheet.

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PIC18LF45K22-I/ML - 8-Bit 64MHz 32KB Flash XLP MCU | Microchip
PIC18LF45K22-I/ML

PIC18LF45K22-I/ML - 8-Bit 64MHz 32KB Flash XLP MCU | Microchip

The Microchip Technology PIC18LF45K22-I/ML is an 8-bit PIC18 microcontroller from the nanoWatt XLP family, offering 32KB of Flash program memory, 1536 bytes of RAM, and 256 bytes of EEPROM in a 44-pin QFN (8x8 mm) package. It operates from a 1.8V to 3.6V supply (LF variant), supports clock rates up to 64MHz via its internal PLL, and integrates peripherals including a 10-bit ADC, two rail-to-rail analog comparators, programmable LVD, mTouch capacitive sensing, and three USART/SPI/I2C interfaces. According to Microchip product family documentation, the PIC18LF45K22 is part of the K22 family targeting low-power and high-performance embedded designs. A PIC18 microcontroller is an 8-bit Harvard-architecture MCU from Microchip's PIC18 family, positioned between the baseline PIC10/12/16 series and the 16-bit PIC24/dsPIC families. The PIC18 lineage is widely used in consumer, industrial, and automotive-grade applications where deterministic real-time performance, broad peripheral integration, and a long-lived toolchain (MPLAB X, XC8 compiler) are valued. Within the broader taxonomy, PIC18 belongs to Microcontrollers -> Integrated Circuits -> Embedded Semiconductors. The 'LF' prefix designates the low-voltage variant optimized for battery-powered systems, while 'K22' identifies the specific silicon revision with nanoWatt XLP ultra-low-power technology. Key differentiating features of the PIC18LF45K22-I/ML include 32KB self-write Flash with 100K endurance cycles, nanoWatt XLP sleep current below 100 nA, hardware Peripheral Pin Select (PPS) for flexible signal routing, a 10-bit ADC with up to 28 channels, and dual rail-to-rail comparators with programmable reference. The 8x8 mm 44-pin QFN package reduces board area vs. equivalent 44-pin TQFP parts while maintaining the full peripheral complement. Technically, the PIC18LF45K22 implements an enhanced 8-bit RISC CPU with a hardware multiply routine, 31-level hardware stack, and a priority interrupt controller. Its internal 16MHz oscillator with 4x PLL reaches 64MHz instruction rate, while nanoWatt XLP mode reduces idle current to ~20 nA typical. The integrated mTouch hardware supports capacitive touch sensing without external components. Typical applications include battery-powered IoT sensor nodes, low-power motor control, capacitive touch human-machine interfaces, USB device peripherals (with the internal USB-capable variants of the family), industrial control panels, and consumer appliances requiring low standby current. The wide peripheral set also supports LCD drive and metering applications. When designing with this device, ensure the LF voltage range (1.8V to 3.6V) is observed across all operating modes including programming. Decoupling capacitors should be placed within 5mm of the VDD/VSS pairs, and the QFN exposed pad must be soldered to the PCB ground plane for thermal dissipation and electrical grounding. This page synthesizes distributor pricing as of 2026-09-29, drop-in alternatives from Microchip's K22 and J-series families, and practical design notes not found on individual distributor listings.

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PIC18LF45K22-I/P - 8-bit 64MHz PIC18 XLP MCU 32KB Flash | Microchip
PIC18LF45K22-I/P

PIC18LF45K22-I/P - 8-bit 64MHz PIC18 XLP MCU 32KB Flash | Microchip

The Microchip Technology PIC18LF45K22-I/P is an 8-bit PIC18 RISC microcontroller running up to 64 MHz with 32 KB Flash program memory, 1536 B RAM, and 256 B EEPROM, housed in a 40-pin PDIP through-hole package. The "LF" prefix denotes the low-voltage (1.8-3.6 V) variant, while "K22" identifies the nanoWatt XLP silicon revision and "I/P" denotes industrial temperature grade and PDIP packaging. An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit data path, integrating CPU core, program memory (Flash/ROM), data memory (RAM), and peripherals such as timers, ADC, and communication interfaces. The PIC18 family is Microchip's high-performance 8-bit line, while "XLP" (eXtreme Low Power) and nanoWatt technology extend battery life through aggressive sleep modes. Within the power management IC hierarchy, an 8-bit MCU sits above the discrete logic layer, providing embedded control without an operating system. Key features include 64 MHz CPU clock (16 MIPS), 28 channels of 10-bit ADC, dual I2C, dual SPI, dual EUSART with LIN support, two analog comparators, four PWM channels, seven timers, 36 digital I/O lines, an internal 16 MHz oscillator, and 1.8-3.6 V single-supply operation. Peripherals are mapped through Microchip's Peripheral Pin Select (PPS) system for flexible PCB routing. The architecture is an enhanced Harvard RISC core with 16-bit instructions, a hardware multiply, and self-programmable Flash under software control. nanoWatt XLP technology enables currents below 1 microamp in deep sleep, suitable for battery-powered instrumentation. Typical applications include industrial control panels, low-power sensor nodes, USB/HID peripherals, HVAC controllers, automotive body ECUs, and consumer white goods. Designers favor this part for legacy-friendly DIP prototyping, stable toolchain support (MPLAB X), and field-proven longevity. When designing, allocate adequate decoupling (100 nF + bulk), respect the 3.6 V absolute maximum on VDD, and use Microchip's MPLAB ICD/SNAP for ICSP. PPS remapping must be configured before peripheral activation. This page consolidates distributor pricing, drop-in alternatives, and applied engineering notes not found in the standalone datasheet, optimized for engineers and procurement teams.

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PIC18LF45K22T-I/ML - 8-bit 64MHz 32KB Flash XLP MCU | Microchip
PIC18LF45K22T-I/ML

PIC18LF45K22T-I/ML - 8-bit 64MHz 32KB Flash XLP MCU | Microchip

The Microchip PIC18LF45K22T-I/ML is an 8-bit PIC18 family microcontroller featuring 64 MHz operation, 32 KB Flash program memory and 1536 bytes of SRAM in a 44-pin QFN (8x8) package with exposed thermal pad. As a member of the PIC18LF45K22 series, it integrates nanoWatt XLP ultra-low-power technology, making it suitable for battery-powered and energy-harvesting designs. An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit data path, optimized for deterministic real-time control with low power consumption and small code footprint. The PIC18 line is Microchip's enhanced Harvard RISC architecture family, positioned between baseline PIC16 and 16-bit dsPIC/PIC24 devices, and it sits within the broader microcontroller taxonomy (8-bit MCU -> microcontroller -> embedded processor -> semiconductor). The "LF" prefix designates the low-voltage F-variant (fcev or flash variant with extended voltage range) operating from 1.8V to 3.6V, ideal for 2.5V/3.3V systems. Key features include 64 MHz internal oscillator (16 MIPS throughput), 32 KB self-programmable Flash with 10-year retention, 256-byte data EEPROM, 35 I/O pins, and 14-channel 10-bit ADC. Peripherals include two rail-to-rail analog comparators, programmable HLVD (High/Low Voltage Detect), mTouch capacitive sensing module with up to 28 channels, multiple PWM modules, and communication interfaces (I2C/SPI/EUSART). The XLP technology enables nanoAmp sleep currents for extended battery life. The device uses an enhanced Harvard RISC architecture with a 16-bit instruction set and 8-bit data path. This single-cycle pipelined core executes most instructions in one clock cycle, achieving 16 MIPS at 64 MHz, which enables efficient C-compiled code and deterministic interrupt response. On-chip peripherals are routed through Peripheral Pin Select (PPS), simplifying PCB layout versus fixed-pin PIC16 devices. Typical applications include battery-powered IoT sensor nodes, portable medical devices, automotive body and interior modules, industrial control panels, and consumer electronics requiring low standby current. The combination of XLP low-power modes and rich analog integration is particularly valuable in remote sensor and human-interface designs. When designing with this MCU, ensure your toolchain uses MPLAB XC8 and configure the configuration bits for the desired oscillator and watchdog settings. Note that the "T" suffix indicates tape-and-reel packaging and "I/ML" denotes the industrial temperature grade (-40C to +85C) in the QFN-44 (8x8) package. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.

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PIC18LF45K22T-I/MV - 8-bit 64MHz 32KB Flash XLP MCU | Microchip
PIC18LF45K22T-I/MV

PIC18LF45K22T-I/MV - 8-bit 64MHz 32KB Flash XLP MCU | Microchip

The Microchip Technology PIC18LF45K22T-I/MV is an 8-bit PIC18 microcontroller built on the nanoWatt XLP low-power platform, featuring a 64 MHz core speed, 32 KB Flash program memory, 1536 bytes of RAM, and 256 bytes of EEPROM, housed in a 40-pin UQFN 5x5 mm package. Operating from 1.8 V to 3.6 V, this industrial-temperature device delivers 16 MIPS performance and integrates rich analog and digital peripherals for connected embedded designs. The 'LF' prefix denotes the low-voltage variant optimized for battery-powered and energy-harvesting applications. What is an 8-bit Microcontroller? An 8-bit MCU is an integrated circuit containing a CPU with an 8-bit data path, program and data memory, and programmable peripherals, used to sense, compute, and control in embedded systems. It belongs to the microcontroller family within the broader category of microprocessors and semiconductors. The PIC18F 'K22' sub-family adds nanoWatt XLP technology, achieving sub-uA sleep currents and active currents in the hundreds of uA/MIPS range. Key features of the PIC18LF45K22T-I/MV include 32 KB self-programmable Flash with 16K x 16 organization, 1536 bytes SRAM, 256 bytes EEPROM, 28 digital I/O pins with interrupt-on-change capability, and a 12-channel 10-bit ADC with automatic acquisition. Communication peripherals include two EUSART modules, two MSSP (I2C/SPI) modules, and up to five CCP/ECCP modules for PWM. The device also integrates a programmable HLVD (High/Low-Voltage Detect), Brown-out Reset, and ultra-low-power Real-Time Clock/Calendar module with RTCC from 32 kHz crystal operation. The PIC18 core uses a 16-bit instruction word with an 8-bit data path and a modified Harvard architecture, supported by a hardware multiplier and C compiler-friendly instruction set. nanoWatt XLP technology provides multiple power-managed modes including Run, Idle, Sleep with RTCC, and deep sleep current typically below 20 nA. The 40-pin UQFN (5x5 mm) package supports the industrial -40C to +85C temperature range while exposing 28 GPIO, two analog comparators, and a charge time measurement unit (CTMU) for capacitive touch sensing. Typical applications include low-power IoT sensor nodes, battery-operated handheld instruments, industrial control with capacitive touch HMI, USB-to-UART bridges (using EUSART + MSSP), and home automation controllers. The combination of generous Flash and nanoWatt XLP makes it well suited for field-upgradable, energy-conscious products. When designing with this part, place a 100 nF decoupling capacitor on each VDD/VCAP pin pair and route the ICSP/PGD/PGC signals with short stubs to a 6-pin header for in-circuit debugging. The 32 kHz TOSC pins are sensitive to capacitive loading, so keep traces short and shielded with a ground guard ring.

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PIC18LF45K40-E/MV - 8-bit MCU, 32KB Flash, XLP | Microchip
PIC18LF45K40-E/MV

PIC18LF45K40-E/MV - 8-bit MCU, 32KB Flash, XLP | Microchip

The Microchip Technology PIC18LF45K40-E/MV is an 8-bit PIC18 microcontroller with 32KB Flash, 2KB SRAM, and 256B EEPROM, housed in a 40-pin UQFN (MV) 5x5 mm package. It integrates a 10-bit ADC with Computation (ADC2), a 5-bit DAC, multiple Core Independent Peripherals (CIPs) including CWG, WWDT, CRC/SCAN, and ZCD, and operates up to 64 MHz. The "LF" prefix denotes the eXtreme Low Power (XLP) family supporting 1.8V-3.6V operation. A PIC microcontroller (Programmable Interface Controller, often called MCU) is a compact integrated circuit combining a CPU core, Flash program memory, SRAM, EEPROM, and configurable peripherals on a single silicon die. The PIC18 architecture is an enhanced 8-bit Harvard core with hardware multiply, 31-level stack, and C-optimized instruction set, sitting at the high end of Microchip's 8-bit PIC family in the broader taxonomy: PIC10/12/16 -> PIC18 -> 8-bit PIC -> microcontroller -> semiconductor device. Key features of this K40 family member include up to 35 I/O pins, two EUSART, two SPI/I2C, 5 CCP/PWM channels, a Complementary Waveform Generator (CWG), Windowed Watchdog Timer (WWDT), Hardware Limit Timer (HLT), and Peripheral Pin Select (PPS) for flexible signal routing. It supports 10-bit ADC2 with automated Capacitive Voltage Divider (CVD) for touch sensing and operates from -40C to +125C in the "-E" (extended) temperature grade. The K40 architecture uses a 16-level hardware stack with C-language friendly addressing, hardware multiplier for 8x8 signed/unsigned math, and nanoWatt XLP technology enabling <50 nA typical sleep current. The integrated Peripheral Pin Select remaps most digital peripherals to nearly any I/O pin, simplifying PCB routing on dense 40-pin UQFN designs. Typical applications include low-power IoT sensor nodes, battery-powered touch-button interfaces, motor control with CWG-driven complementary outputs, USB-to-UART bridges, and industrial control panels requiring 5V-tolerant I/O. XLP nanoWatt features make it well suited for energy-harvesting and always-on designs. When designing with this device, plan carefully for the UQFN-40 (MV) layout: route peripherals via PPS to break out the needed signals to accessible pins. Use ADC2 with CVD for cap-touch front panels and budget for the 1.8V minimum Vdd to leverage the lowest XLP sleep currents. This page synthesizes distributor pricing, drop-in alternatives within the PIC18 K40 family, and practical design notes that go beyond the manufacturer datasheet, giving engineers a single source for sourcing and design decisions.

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PIC18LF45K40-E/PT - 8-Bit 64MHz 32KB Flash MCU | Microchip
PIC18LF45K40-E/PT

PIC18LF45K40-E/PT - 8-Bit 64MHz 32KB Flash MCU | Microchip

The Microchip Technology PIC18LF45K40-E/PT is an 8-bit PIC microcontroller from the PIC18F XLP family, featuring 64 MHz CPU speed, 32 KB Flash program memory, 2 KB RAM and 256 bytes EEPROM in a 44-pin TQFP package. It operates from 1.8 V to 3.6 V, delivers up to 36 I/O pins, and integrates Core Independent Peripherals including CWG (Complementary Waveform Generator), WWDT (Windowed Watchdog Timer) and CRC/SCAN, plus 10-bit ADC, 5-bit DAC and multiple serial interfaces. What is a microcontroller? A microcontroller is a single-chip computer that integrates a CPU core, non-volatile program memory (typically Flash), working RAM, and a rich set of on-chip peripherals such as timers, ADC/DAC, communication interfaces and interrupt controllers. Within the broader semiconductor taxonomy, a microcontroller belongs to the class of embedded processors -> microcontrollers -> 8-bit microcontrollers. Microchip's PIC18F family targets low-power, general-purpose embedded designs using a modified Harvard RISC architecture with 16-bit opcodes and 8-bit data. Key features of the PIC18LF45K40-E/PT include the eXtreme Low Power (XLP) technology with typical sleep currents in the nanoampere range, an integrated 64 MHz internal oscillator that eliminates an external crystal in many designs, and a 10-bit ADC with computation (ADC2) for automated averaging and threshold comparisons. The CWG peripheral can synthesize dead-band-controlled complementary PWM outputs for half-bridge driver stages without CPU intervention. The architecture uses a 16-bit instruction word with an 8-bit data path, 31-level hardware stack, and a priority-level interrupt controller. The device supports self-programmability and a Dual In-line Programming (ICSP) interface, plus an enhanced PMP/EPSP for parallel bus interfaces to external memory or graphics LCDs. Typical applications include low-power IoT sensor nodes, battery-powered handheld instruments, consumer appliance controllers, industrial HMI touch pads, and LED lighting control. The wide operating voltage range allows direct connection to 2-cell battery stacks or regulated 3.3 V rails. A key design consideration is selecting between LF (1.8-3.6 V) and F (2.3-5.5 V) variants to match the system rail. LF parts are mandatory for coin-cell and Li-Ion discharged applications; F parts allow direct 5 V operation. Per the Microchip datasheet, supply decoupling requires 100 nF plus 1 µF ceramic capacitors placed within 5 mm of VDD/AVDD pins. This page synthesizes distributor pricing, drop-in PIC18 alternatives, and practical design notes not consolidated in the manufacturer datasheet.

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PIC18LF45K40-I/ML - 32KB Flash XLP 8-bit MCU | Microchip | 44-QFN
PIC18LF45K40-I/ML

PIC18LF45K40-I/ML - 32KB Flash XLP 8-bit MCU | Microchip | 44-QFN

The Microchip Technology PIC18LF45K40-I/ML is a low-power, high-performance 8-bit PIC18 microcontroller from the PIC18(L)F4xK40 family, featuring 32 KB of Flash program memory, 2 KB of SRAM, and a 64 MHz internal oscillator core, all housed in a 44-pin QFN (8x8 mm) package with exposed thermal pad. The device operates over a wide 1.8V to 3.6V supply range, making it a member of the LF (low-voltage, F) variant optimized for battery and energy-harvesting designs while retaining 5V-tolerant digital inputs. An 8-bit microcontroller (MCU) is a small computer-on-a-chip that integrates a CPU, program memory (Flash), data memory (RAM), and a rich set of peripherals into a single IC. It belongs to the hypernym hierarchy: microcontroller -> embedded processor -> integrated circuit -> semiconductor. The PIC18 family uses an enhanced Harvard RISC architecture with a modified instruction set optimized for C code density, while the LF prefix denotes the low-voltage process and XLP (eXtreme Low Power) family adds nanoWatt XLP peripherals and idle/doze/sleep modes engineered for sub-uA standby. Key features include 32 KB (16K x 16) Flash, 256 B EEPROM, 2 KB SRAM, 36 configurable I/O pins with interrupt-on-change, a 10-bit ADC with computation (ADC2) up to 35 channels, up to 5 CCP/ECCP modules, two UART/USART with LIN support, two SPI, two I2C (MSSP), a windowed watchdog timer (WWDT), a CRC/SCAN module, and a Complementary Waveform Generator (CWG). Core Independent Peripherals such as CWG, WWDT, and CRC/Memory Scan allow hardware-driven tasks to run without CPU intervention, lowering active duty cycle. The PIC18LF45K40 is built on Microchip's enhanced mid-range core with a 16-bit instruction word and 8-bit data path, executing most instructions in one cycle (4 clock cycles internally). At 64 MHz the core delivers up to 16 MIPS, which is sufficient for sensor fusion, simple state machines, and protocol bridging in IoT edge nodes. Internal voltage reference and zero-cross detect simplify mains-coupled designs without external components. Typical applications include IoT sensor nodes, battery-powered wearables, home automation controllers, industrial sensor hubs, automotive body and interior modules, low-power remote controls, and consumer appliance user interfaces. The combination of XLP sleep current below 50 nA (typical) and rapid wake-up makes it well-suited for energy-harvesting and EnergyBLINK-style designs where quiescent drain dominates battery life. When designing with this device, observe the 3.6V absolute-maximum on VDD and avoid back-powering through I/O pins. Place a 100 nF decoupling capacitor as close as possible to each VDD/VSS pair and follow Microchip AN585 for QFN thermal via layouts under the exposed pad. The -I (Industrial) suffix denotes -40C to +85C operating range; for -40C to +125C automotive, choose the -E or -Q1 variants. This page synthesizes distributor pricing, drop-in alternatives, comparison tables, and practical design notes not found in the manufacturer datasheet alone, helping engineers shorten evaluation cycles and avoid common PIC18LF layout pitfalls.

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PIC18LF45K40-I/MV - 8-bit 64MHz 32KB Flash MCU | Microchip
PIC18LF45K40-I/MV

PIC18LF45K40-I/MV - 8-bit 64MHz 32KB Flash MCU | Microchip

The Microchip Technology PIC18LF45K40-I/MV is an 8-bit PIC microcontroller in the PIC18 "K40" family, featuring 32 KB of Flash program memory, 2 KB of SRAM and 256 bytes of EEPROM, all packaged in a 40-pin UQFN (MV) 5x5 mm package. The LF variant supports a wide 1.8 V to 3.6 V operating voltage range with XLP (eXtreme Low Power) technology, and the device core runs up to 64 MHz delivering up to 16 MIPS of throughput for deterministic embedded control. An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit data path, integrating CPU core, non-volatile program memory (Flash), volatile working memory (SRAM), small EEPROM for data retention, and a rich set of on-chip peripherals. In the broader semiconductor taxonomy, an MCU belongs to microcontrollers -> microcomputers -> embedded processors -> logic/semiconductor ICs. The K40 family is positioned within Microchip's PIC18 line as a general-purpose, low-power tier with Core Independent Peripherals (CIPs) that offload tasks from the CPU. The PIC18LF45K40-I/MV integrates a 10-bit ADC with computation (ADC2), a 5-bit DAC, two comparators, a 16-bit PWM with CCP, Complementary Waveform Generator (CWG), Zero-Cross Detect (ZCD), Hardware Limit Timer (HLT), Windowed Watchdog Timer (WWDT), and CRC/SCAN memory diagnostics. Communication is handled through EUSART (UART), SPI and I2C, with Peripheral Pin Select (PPS) for flexible signal routing across the 36 I/O pins. NanoWatt XLP technology enables sleep currents below typical MCU levels, making the part suited for battery-powered and energy-harvesting designs. Architecturally, the PIC18F/K40 uses an enhanced Harvard RISC core with a hardware multiplier and C-optimized instruction set. The combination of CIPs (CWG, NCO, DSM, ZCD) plus PPS enables designers to implement complex timing, motor-control and signal-generation tasks without CPU intervention, freeing the core for application logic and communications. Typical applications include low-power IoT sensor nodes, battery-powered handheld instrumentation, home-appliance control panels, LED lighting drivers, motor-control auxiliary logic, and USB-to-UART bridge firmware hosts. The wide voltage range and 5V-tolerant I/O (with proper configuration) also suit industrial 24V-bus interface modules after external regulation. When designing with the MV package, route the central exposed pad to the ground plane for thermal and electrical performance, and provide a 0.1 uF decoupling capacitor as close as possible to each VDD/VSS pair. Avoid using PPS as a substitute for proper pin assignment during PCB layout—keep high-speed signals on dedicated pins. This page synthesizes distributor pricing, drop-in package alternatives from the same PIC18 family, and practical design notes not found in the manufacturer datasheet.

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PIC18LF45K40-I/P - 32KB Flash, 8-Bit MCU, 40-DIP | Microchip
PIC18LF45K40-I/P

PIC18LF45K40-I/P - 32KB Flash, 8-Bit MCU, 40-DIP | Microchip

The Microchip PIC18LF45K40-I/P is an 8-bit PIC18 microcontroller built on Microchip's eXtreme Low Power (XLP) platform, offering 32 KB of Flash program memory, 2 KB of RAM, and 256 bytes of EEPROM in a 40-pin PDIP (DIP-40) through-hole package. It operates from 1.8V to 3.6V and is rated industrial temperature grade (-40C to +85C), with a maximum CPU clock of 64 MHz (16 MIPS) achieved via the internal 64 MHz oscillator and 4x PLL. What is a PIC18 microcontroller? PIC18 is Microchip's high-performance 8-bit microcontroller family using a RISC modified-Harvard architecture with a 16-bit instruction word. PIC18 devices sit within the broader taxonomy: 8-bit MCU -> microcontroller -> embedded controller -> semiconductor IC. XLP variants such as this LF part add sub-uA sleep currents, nanoWDT-level power-down modes, and active mode currents under 1 mA/MIPS, making them suited to battery-powered and energy-harvesting designs. Key differentiating features include Core Independent Peripherals such as a Complementary Waveform Generator (CWG), Configurable Logic Cell (CLC), Zero-Cross Detect (ZCD), Windowed Watchdog Timer (WWDT), CRC/SCAN, and 10-bit ADC2 with computation, plus a 5-bit DAC. The device integrates a 36-channel digital-to-analog-aware I/O structure, multiple PWM/CCP/SCCP modules, and hardware math accelerators. These peripherals allow complex timing, motor control, and communication tasks without burdening the CPU. The architecture combines a 16-bit wide instruction pipeline, hardware multiply, and a flexible oscillator system. XLP technology delivers typically 25 nA sleep current and 500 nA watchdog timer retention current, allowing years of operation from a single coin cell. This combination of low power and rich analog/digital integration differentiates the PIC18LF45K40 from simpler PIC16 cousins. Typical applications include low-power IoT sensor nodes, battery-backed remote controls, industrial sensor conditioning, smart metering, small appliance controls, and USB-less embedded control where a through-hole DIP package simplifies prototyping and field replacement. When designing with this part, remember that the LF prefix indicates 3.3V nominal operation (max 3.6V); for 5V-tolerant designs, choose the PIC18F45K40-I/P instead. The -I/P suffix indicates industrial temperature and PDIP-40 package. Decoupling, in-circuit serial programming (ICSP) pins, and unused-pin handling must follow Microchip TB087 and the family datasheet. This page synthesizes distributor pricing, drop-in alternatives within the same DIP-40 footprint, and practical design notes curated from Microchip application notes, supplementing the manufacturer datasheet.

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PIC18LF45K40-I/PT - 8-bit 64MHz 32KB Flash MCU | Microchip
PIC18LF45K40-I/PT

PIC18LF45K40-I/PT - 8-bit 64MHz 32KB Flash MCU | Microchip

The Microchip Technology PIC18LF45K40-I/PT is an 8-bit PIC18 microcontroller built on the eXtreme Low Power (XLP) architecture, delivering 64 MHz CPU performance with 32 KB of Flash program memory, 2 KB of RAM, and 256 B of EEPROM in a 44-pin TQFP (10x10 mm) package. Key headline parameters include a 64 MHz maximum clock, 32 KB Flash, 2 KB SRAM, 256 B EEPROM, a 10-bit ADC with Computation (ADCC), a 5-bit DAC, and integrated peripherals such as CWG, WWDT, CRC/SCAN, ZCD, CCP, PWM, and comparators. A PIC18 microcontroller is a family of 8-bit RISC microcontrollers from Microchip Technology built on a modified Harvard architecture, programmed via MPLAB X IDE and XC8 compilers. PIC18 devices sit within the broader product hierarchy of PIC -> 8-bit MCU -> microcontroller -> semiconductor IC, and the LF variant operates across a wide 1.8V to 3.6V supply range. XLP technology integrates nanoWatt XLP sleep modes that drop quiescent current below ~50 nA in deep sleep, making this family especially attractive for battery-powered edge nodes where sleep duty cycle dominates lifetime. Differentiating features include Core Independent Peripherals (CIPs) such as CWG (Complementary Waveform Generator) and the configurable WWDT windowed watchdog, plus a 10-bit ADC with Computation engine that automates Capacitive Voltage Divider (CVD) sequences for mTouch touch sensing without CPU load. Communication peripherals cover EUSART, I2C, and SPI, while the integrated 5-bit DAC and zero-cross detect (ZCD) simplify analog signal conditioning. The 44-pin TQFP footprint provides ample I/O for human-interface or sensor-hub designs. The LF silicon is fabricated on Microchip's PMOS-enhanced 8-bit pipeline and supports in-circuit serial programming (ICSP) plus self-programming Flash, enabling bootloader-based field updates. PIC18 K-series parts add Peripheral Pin Select (PPS), so virtually any digital peripheral can be remapped to multiple I/O pins, simplifying PCB layout for mixed-signal designs. Five selectable oscillator modes include a 16 MHz internal HFINTOSC with +/- 1% accuracy after calibration. Typical applications include low-power IoT sensor nodes (using XLP sleep + ADC), mTouch capacitive keypads (CVD via ADCC), battery-powered consumer devices such as remote controls and wearables, motor control loops leveraging CWG and PWM, and industrial HMI panels requiring EUSART or I2C peripheral expansion. Designers value the same development ecosystem (MPLAB X, XC8, MCC code configurator) as the wider PIC18 family, lowering time-to-prototype. When designing with the PIC18LF45K40-I/PT, prioritize sleep-mode current budgeting and run-time oscillator choice; HFINTOSC saves external BOM cost but draws more current than LFINTOSC during active mode. Decoupling: place 100 nF + 1 uF close to VDD/AVDD+ each SSID, route VSS/VCAPOD pins directly to ground copper. This page synthesizes distributor pricing, drop-in alternatives, and design notes that go beyond the manufacturer datasheet by mapping parametric differences against peer PIC18 K40-family parts.

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PIC18LF45K40T-I/ML - 32KB Flash 8-Bit XLP MCU 64MHz QFN-44
PIC18LF45K40T-I/ML

PIC18LF45K40T-I/ML - 32KB Flash 8-Bit XLP MCU 64MHz QFN-44

The Microchip Technology PIC18LF45K40T-I/ML is an 8-bit PIC18 microcontroller from the PIC18 "K40" family, featuring 32 KB Flash, 2 KB RAM and 256 B EEPROM, running up to 64 MHz on the enhanced PIC18 CPU core. The device is housed in a 44-pin QFN (8x8 mm) package with exposed thermal pad (QFN/ML suffix) and is rated for the -40C to +85C industrial temperature window as indicated by the "I" designator. The trailing "T" suffix denotes Tape & Reel packaging. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash), working memory (RAM), data EEPROM and a rich set of on-chip peripherals into one package. PIC18 MCUs sit in the mid-range 8-bit tier of Microchip's product line, above base-line PIC10/12/16 parts in code density and peripheral integration, and below the PIC24/dsPIC and 32-bit families in raw compute throughput. The "LF" prefix indicates a wide-voltage device that can run across 1.8 V to 3.6 V (F-version parts extend this to 5.5 V), enabling direct battery-powered designs. Key features include Microchip's eXtreme Low Power (XLP) technology with claimed nanoWatt sleep currents, 10-bit ADC with Computation (ADC2), 5-bit DAC, two comparators, multiple Capture/Compare/PWM modules, Complementary Waveform Generator (CWG), Windowed Watchdog Timer (WWDT), CRC/SCAN hardware and Zero-Cross Detect. Core-Independent Peripherals handle events without CPU wake-up, which is critical for XLP designs. The 44-pin QFN footprint exposes up to 36 I/O pins supporting multiple communication peripherals including UART, SPI and I2C. Typical applications include low-power IoT sensor nodes, battery-powered instrumentation, white goods and small appliance controls, USB-less human-interface panels and industrial sensor-conditioning nodes. The exposed-pad QFN package also makes it suitable for space-constrained layouts where thermal conduction into the PCB ground plane is needed for the higher F-version dissipation. When designing with this part, ensure the exposed pad is soldered to a sufficient copper area for thermal relief. The QFN-44 (8x8 mm) footprint differs from the 40-pin PDIP and 44-pin TQFP variants of the same die - plan your PCB land pattern accordingly and verify the pinout against the family datasheet. This page synthesizes distributor pricing, tape-and-reel availability, drop-in same-family alternatives, and practical design notes not found in the manufacturer datasheet alone.

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