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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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PIC18LF45K40T-I/PT - 8-bit 64MHz XLP MCU 32KB Flash | Microchip
PIC18LF45K40T-I/PT

PIC18LF45K40T-I/PT - 8-bit 64MHz XLP MCU 32KB Flash | Microchip

The Microchip Technology PIC18LF45K40T-I/PT is an 8-bit PIC microcontroller in the PIC18 XLP family, delivering 64 MHz CPU performance with 32 KB Flash, 2 KB SRAM and 256 B EEPROM in a 44-pin TQFP (10x10 mm) surface-mount package. It operates from a 1.8 V to 3.6 V supply and integrates rich analog and digital peripherals including a 10-bit ADC with Computation (ADC2), a 5-bit DAC, comparators, PWM, CCP, CWG, HLT, WWDT, SCAN/CRC, ZCD, PPS, EUSART, SPI and I2C. An 8-bit microcontroller (MCU) is a small computer-on-a-chip built around an 8-bit data path and is widely used in cost-sensitive, deterministic embedded applications such as sensor nodes, consumer appliances, motor control and industrial automation. The PIC18 family sits in Microchip's mid-range 8-bit portfolio, between the baseline PIC10/12/16 families and the dsPIC/PIC24 16-bit families, and is part of the broader microcontroller category under digital logic ICs. The 'LF' suffix designates the low-power (1.8-3.6 V) variant, while 'XLP' (eXtreme Low Power) refers to Microchip's low-power peripheral design that enables nanoWatt sleep currents suitable for battery-powered designs. Key features include nanoWatt XLP technology for deep sleep current in the nanoamp range, Core Independent Peripherals (CIPs) such as CWG, WWDT and CRC/SCAN that offload tasks from the CPU, and Peripheral Pin Select (PPS) for flexible signal routing. The device also includes multiple power-managed operating modes (IDLE/DOZE/PMD) and hardware limit timer (HLT) for safety-critical or fault-detecting applications. Typical applications include low-power IoT sensor nodes, battery-powered instrumentation, home appliances, motor control with CCP/PWM, and industrial control panels with LIN/EUSART connectivity. The wide 1.8-3.6 V supply range and integrated analog make it well suited for sensor conditioning and closed-loop feedback systems. This page synthesizes distributor pricing, drop-in PIC18 family alternatives and practical design notes not found in the manufacturer datasheet.

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PIC18LF45K42-E/ML - 64MHz 32KB Flash 8-bit MCU | Microchip
PIC18LF45K42-E/ML

PIC18LF45K42-E/ML - 64MHz 32KB Flash 8-bit MCU | Microchip

The Microchip PIC18LF45K42-E/ML is an 8-bit PIC® XLP™ 18K microcontroller running at 64MHz with 32KB (16K × 16) of Flash program memory, 2KB of SRAM, and 256B of EEPROM, housed in a 44-pin QFN (8x8) package with exposed thermal pad. It operates from 1.8V to 3.6V and is designed for low-power and battery-friendly applications in the PIC18 LF 'K42 family. An 8-bit microcontroller (MCU) is a small, self-contained computer-on-a-chip that integrates a CPU, program memory (Flash), data memory (RAM), non-volatile storage (EEPROM), and a rich set of peripherals such as timers, ADCs, communication interfaces, and GPIO. PIC18 microcontrollers use a RISC-based Harvard architecture; the 'K42 family adds Core Independent Peripherals (CIPs) that execute tasks without CPU intervention. The LF prefix denotes the 1.8V–3.6V low-voltage variant, with the F (3.0V–5.5V) variant being the PIC18F45K42. The 'K42 line falls within the broader PIC18 family > 8-bit PIC microcontrollers > Microcontrollers (MCU) > semiconductors taxonomy used by distributors. Key features of the PIC18LF45K42-E/ML include a 12-bit ADC with Computation, a 5-bit DAC, three analog comparators with a DAC reference, zero-cross detect (ZCD), DMA controller, vectored interrupts, configurable logic cells (CLC), complementary waveform generator (CWG), 16-bit PWM, UART/SPI/I2C with PPS, watchdog timer (WWDT), scan/CRC, and idle/doze/peripheral module disable (PMD) power-saving modes. These peripherals are tuned for sensor nodes, motor control loops, lighting, and small motor/valve drivers. The 'K42 architecture combines a high-performance 8-bit core (64MHz, 16 MIPS) with hardware acceleration through DMA and CIPs, enabling deterministic real-time response without loading the CPU. The peripheral pin select (PPS) allows flexible digital pin mapping, simplifying PCB layout when changing signal assignments. Together these blocks give designers a flexible platform for low-power embedded control. Typical applications include low-power IoT sensor nodes, battery-powered instrumentation, white-goods and appliance controls, lighting and LED drivers, automotive body and sensor interfaces, sensor signal conditioning, and small brushed-DC or stepper motor control loops. The wide 1.8V–3.6V range supports single-cell Li-ion or 2× AA battery chemistries. When designing with this part, ensure that the MCLR reset circuit and decoupling capacitors follow the datasheet typical application circuit. Verify that peripheral allocations via PPS do not conflict, and use the XLP sleep modes plus PMD for sub-µA standby currents in battery-powered products. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found on the manufacturer datasheet alone, giving engineers and procurement teams a single source for selection, replacement, and sourcing decisions.

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PIC18LF45K42-E/MV - 8-bit 64MHz XLP MCU 32KB Flash UQFN-40 | Microchip
PIC18LF45K42-E/MV

PIC18LF45K42-E/MV - 8-bit 64MHz XLP MCU 32KB Flash UQFN-40 | Microchip

The Microchip Technology PIC18LF45K42-E/MV is an 8-bit PIC® XLP™ 18K microcontroller running at up to 64 MHz with 32 KB Flash, 2 KB SRAM and 256 B EEPROM, housed in a 40-pin UQFN (5x5 mm) MV package. The 'LF' prefix denotes the low-voltage (1.8–3.6 V) variant and the 'E' suffix denotes the -40 °C to +125 °C extended operating range. Core Independent Peripherals (CIPs), on-chip DMA, vectored interrupts, 12-bit ADC2, DAC, comparators, PWM, CWG, HLT, WWDT, SCAN/CRC, ZCD, PPS, UART, SPI and I²C are integrated on die. An 8-bit PIC microcontroller is a Harvard-architecture MCU built around an enhanced RISC core with separate program and data buses, optimized for deterministic interrupt latency and low-power embedded control. It sits inside the broader taxonomy: microcontroller -> embedded MCU -> 8-bit MCU -> PIC18 family -> PIC18F/LF K42 sub-family -> semiconductor. PIC18 K42 devices extend this lineage with on-chip DMA and rich CIP analog blocks aimed at sensor and motor-control applications. Key features include 64 MHz internal oscillator (no external crystal required), 1.8–3.6 V VDD operation, XLP nanoWatt sleep currents below 50 nA typical, and an integrated 12-bit ADC with up to 35 analog channels and automated ADC sequencing. The on-chip DMA engine moves data between peripherals and memory without CPU intervention, offloading high-throughput peripherals like the ADC, UART and SPI. The Peripheral Pin Select (PPS) module allows remapping of digital I/O to a wide set of physical pins, simplifying PCB routing. Typical applications include low-power IoT sensor nodes that benefit from XLP sleep currents, industrial sensor signal conditioning using the 12-bit ADC2 + op-amp + DAC chain, automotive body and HVAC modules in the extended-temperature range, and USB/HID or general-purpose USB bridging with the MSSP module. The 40-pin UQFN footprint exposes 36 I/O pins for keypad, LCD, or display matrix interfaces. When designing with this device, place decoupling 100 nF and bulk 1–10 µF ceramic capacitors as close as possible to VDD/AVDD/VSS pairs, and connect all unused I/O pins to defined logic levels to minimize current leakage in sleep. The PPS configuration registers must be unlocked and locked in a specific sequence to prevent accidental remapping, as detailed in the datasheet configuration word section.

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PIC18LF45K42-E/P - 32KB Flash, 64MHz 8-bit MCU | Microchip
PIC18LF45K42-E/P

PIC18LF45K42-E/P - 32KB Flash, 64MHz 8-bit MCU | Microchip

The Microchip Technology PIC18LF45K42-E/P is an 8-bit PIC microcontroller in the PIC18F K42 family featuring 32KB Flash program memory, 2KB RAM, and 256B EEPROM, housed in a 40-pin PDIP (DIP-40) through-hole package. It operates from a wide 1.8V to 3.6V supply with a 64MHz internal oscillator, integrates a 12-bit ADC2 with Computation (ADCC), vector interrupts, DMA, MAP, DIA, DAC, comparators, PWM, CWG, HLT, WWDT, SCAN/CRC, ZCD, and PPS peripheral pin select. A microcontroller (MCU) is a single-chip computer containing a CPU core, volatile and non-volatile memory, programmable peripherals, and I/O pins. The PIC18 family from Microchip is built on an enhanced 8-bit Harvard RISC architecture optimized for deterministic real-time control, while the LF suffix denotes the low-voltage F-family variant aimed at battery and energy-harvesting applications. This part belongs to the broader hierarchy: microcontroller -> 8-bit MCU -> PIC18 -> PIC18F K42 sub-family -> low-power (LF) line -> 40-pin segment. Key differentiating features include the 12-bit ADCC with automatic averaging and threshold comparison offloading CPU cycles, the Direct Memory Access (DMA) controller that moves data between peripherals and memory without CPU intervention, and the Peripheral Pin Select (PPS) which remaps digital I/O functions to virtually any pin. The device also includes Zero-Cross Detection (ZCD), Complementary Waveform Generator (CWG), and Windowed Watchdog Timer (WWDT) for safety-critical loop timing. A 32KB self-programmable Flash supports bootloaders and field firmware updates. Architecturally the K42 family uses Microchip's eXtreme Low Power (XLP) technology with typical sleep currents in the nanoamp range and multiple IDLE/DOZE/PMD power-management modes. The 64MHz maximum clock derives from a 16MHz internal oscillator with a 4x PLL, and the device supports instruction-cycle throughput of 16 MIPS at 64MHz. Core-independent peripherals (CIPs) such as CWG, NCO, and PWM allow complex waveform synthesis with zero CPU involvement. Typical applications include low-power IoT sensor nodes running on coin-cell batteries, home-automation and HVAC control units, LED lighting controllers with smooth dimming, USB-to-UART bridge devices, industrial sensor conditioning with 12-bit ADC acquisition, and motor-control signal conditioning using the CWG and PWM peripherals. The wide operating voltage range and XLP features also suit portable medical and metering instruments. When designing with this MCU, plan for ICD/ICSP header access on every prototype to support in-circuit debugging via Microchip's MPLAB X IDE. The PPS system must be configured in firmware before peripheral use; failure to do so will leave pins floating. Finally, verify the 64MHz core speed against the chosen low-voltage mode - maximum frequency drops at lower Vdd. This page consolidates verified distributor pricing, drop-in alternative MPNs, datasheet pointers, and practical design notes tailored for engineers selecting or sourcing this MCU.

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PIC18LF45K42-E/PT - 8-bit 64MHz 32KB Flash MCU 44-TQFP | Microchip
PIC18LF45K42-E/PT

PIC18LF45K42-E/PT - 8-bit 64MHz 32KB Flash MCU 44-TQFP | Microchip

The Microchip PIC18LF45K42-E/PT is an 8-bit PIC18 microcontroller built on the eXtreme Low Power (XLP) platform, featuring a 64 MHz CPU, 32 KB of Flash program memory, 2 KB of SRAM, and 256 bytes of EEPROM, housed in a 44-pin TQFP (10x10 mm) package. It integrates a rich set of Core Independent Peripherals (CIPs) including a 12-bit ADC with Computation (ADCC), a 5-bit DAC, configurable logic cells, complementary waveform generators, and zero-cross detection, all operating over a wide 1.8V to 5.5V supply range. The 'LF' prefix denotes the low-voltage/F-version silicon that supports full-speed operation across the entire supply range with nanoWatt XLP sleep currents below 50 nA typical. An 8-bit microcontroller (MCU) is a single-chip computer that integrates an 8-bit CPU, program memory (Flash), data memory (SRAM), non-volatile storage (EEPROM), and a configurable peripheral set. PIC18 microcontrollers use a 16-bit instruction word with an 8-bit data path, placing them in the hierarchical taxonomy: microcontroller -> embedded controller -> semiconductor IC. The PIC18F/LF K42 family specifically targets applications that require complex analog signal conditioning, deterministic hardware-driven responses, and very low standby power for battery-backed designs. Key differentiating features include the Direct Memory Access (DMA) controller that moves data between memory and peripherals without CPU intervention, peripheral pin select (PPS) for flexible signal routing, vectored interrupts for fast deterministic response, and a 12-bit ADCC with automated averaging, oversampling, and threshold comparisons. These features allow software state machines to be offloaded to hardware, reducing CPU load and code size while improving real-time performance. The 256-byte EEPROM and 2 KB SRAM support 32 KB of Flash code with room for data logging tables and communication buffers. The architecture uses a modified Harvard layout with a hardware multiplier and a 31-level stack, supporting C-compiled code via the XC8 toolchain. Four 16-bit timers, multiple CCP/PWM modules, two I2C, two SPI, two UART (with LIN), and a 12-bit differential ADC make it suitable for mixed-signal embedded designs that need both analog precision and digital throughput. The on-chip DMA engine can autonomously feed the ADC into RAM, freeing the core to manage the control loop. Typical applications include industrial sensor transmitters, low-power IoT edge nodes, BLDC motor control stages, automotive body and lighting ECUs (non-safety), home appliance user-interface and motor controllers, and battery-powered metering products. The combination of nanoWatt XLP idle modes, high-resolution analog, and DMA is particularly well matched to handheld instrumentation and remote sensor nodes that spend most of their life in sleep. Design consideration: leverage DMA to pre-fill ADC result buffers in sleep, then wake on threshold or interrupt - this combination minimizes average current without sacrificing measurement cadence. Be careful to configure the PPS mappings for every digital peripheral before first use to avoid floating or shorted outputs during code bring-up. This page synthesizes distributor pricing, drop-in alternatives drawn from the same Microchip K42 family, and practical design notes not found in the manufacturer datasheet, providing procurement and engineering value beyond a single product listing.

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PIC18LF45K42-I/ML - 8-Bit XLP MCU, 32KB Flash, 64MHz | Microchip
PIC18LF45K42-I/ML

PIC18LF45K42-I/ML - 8-Bit XLP MCU, 32KB Flash, 64MHz | Microchip

The Microchip Technology PIC18LF45K42-I/ML is an 8-bit PIC18 enhanced microcontroller built on the company's nanoWatt XLP (eXtreme Low Power) technology platform, delivering 64 MHz core performance with 32 KB of Flash program memory in a 44-pin QFN (8x8 mm) package with an exposed thermal pad. The LF prefix indicates the low-voltage variant with an operating range of 1.8V to 3.6V, ideal for battery-powered and energy-harvesting designs. A microcontroller (MCU) is a single-chip computer containing a CPU core, program and data memory, peripherals, and I/O. The 8-bit MCU class excels at deterministic bit manipulation, low power consumption, and cost-sensitive applications, while the PIC18 architecture adds a rich 16-bit instruction set, hardware multiply, and a linear (paged-free) program memory map. The K42 series extends this with peripheral additions such as configurable logic cells (CLC), numerically controlled oscillator (NCO), and high-resolution PWM modules. Key features of the PIC18LF45K42-I/ML include 32 KB Flash with 2 KB RAM and 256 bytes EEPROM, four 16-bit timers, two USART, two SPI/I2C, a 12-bit ADC with computation (ADCC), a 5-bit DAC, two comparators, three op amps (rail-to-rail input/output), and the aforementioned CLC, NCO, and CWG peripherals. The device supports up to 36 digital I/O pins routed through peripheral pin select (PPS), providing exceptional flexibility for mixed-signal designs. Per the Microchip PIC18(L)FxxK42 datasheet, the part is qualified to the industrial temperature range of -40 C to +85 C. Architecturally, the PIC18LF45K42 uses a Harvard-memory RISC core with a 16-bit instruction word and an 8-bit data path, achieving 16 MIPS at 64 MHz. The integrated nanoWatt XLP modes (Sleep, Idle, Doze) plus the new power-managed run modes allow active currents below 1 mA/MHz and deep sleep currents in the nanoamp range, while the integrated 32 kHz low-power FRC oscillator eliminates external crystals in many designs. PPS remaps most digital peripherals to almost any I/O pin, simplifying PCB layout and BOM. Typical applications include battery-powered IoT sensor nodes, low-power wireless remote controls, home automation edge nodes, portable medical telemetry, automotive body controllers (with AEC-Q100 grade variants), industrial HMI panels, and small motor control / LED lighting. Designers leverage its op-amp + ADC + DAC chain for direct sensor conditioning without external analog ICs. When designing with the PIC18LF45K42-I/ML, ensure that the supply is decoupled with a 100 nF ceramic bypass capacitor placed within 5 mm of the VDD pins, and that the exposed thermal pad (EP) is soldered to a continuous ground plane for thermal relief and low-impedance return paths. The wide PPS routing and 36 I/O pins reduce external glue logic. This page synthesizes distributor pricing, drop-in alternatives, and engineering design notes not found in the manufacturer datasheet alone, accelerating BOM selection for PIC18 K42 designs.

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PIC18LF45K42-I/P - 8-bit 64MHz 32KB Flash MCU | Microchip
PIC18LF45K42-I/P

PIC18LF45K42-I/P - 8-bit 64MHz 32KB Flash MCU | Microchip

The Microchip Technology PIC18LF45K42-I/P is an 8-bit PIC microcontroller from the PIC18F K42 family, featuring a 64MHz CPU, 32KB of Flash program memory and 2KB of RAM, housed in a 40-pin PDIP through-hole package. Built on Microchip's eXtreme Low Power (XLP) technology platform, this device integrates Core Independent Peripherals (CIPs), a 12-bit ADC, on-chip Direct Memory Access (DMA) controller, and vectored interrupts to deliver fast processing with reduced CPU load. Operating from 1.8V to 3.6V, the LF variant is optimized for low-voltage F-series operation. A microcontroller (MCU) is a single-chip computer that integrates a CPU, memory (Flash/RAM), and programmable I/O peripherals onto one die. Within the embedded system hierarchy, the PIC18LF45K42-I/P sits in the 8-bit RISC MCU tier and is widely used in cost-sensitive, low-power industrial and consumer designs. The PIC18F K42 family is the modern successor to the K22 and K40 families, introducing configurable logic cells, a hardware DMA engine, and improved CIP blocks that let peripherals operate without waking the CPU. Key features include 32KB (16K x 16) Flash, 2KB SRAM, 256 bytes EEPROM, 36 I/O pins, a 12-bit differential ADC with computation, multiple PWM outputs, and configurable logic cells. Peripherals include UART, SPI, I2C, CLC, and a high-resolution 16-bit PWM. The integrated DMA enables data movement between memory and peripherals without CPU intervention, sharply lowering active-mode current and enabling deterministic analog sampling. Typical applications include low-power IoT sensor nodes, industrial control and HMI boards, automotive body controllers, USB-to-UART bridges, sensor conditioning front-ends, and small home appliances. The wide 1.8V-3.6V operating range makes the LF variant suitable for 2xAA/2xAAA battery-powered designs where quiescent current and brown-out behavior dominate BOM decisions. When designing with this MCU, ensure decoupling: 100nF on every VDD pin plus a bulk 10uF on the main rail. For sleep-mode operation, leverage the LF variant's nanoWatt XLP peripherals (RTC, WDT, BOR) to draw sub-microamp standby current; the standard F variant (PIC18F45K42-I/P) does not reach this low-power regime at the same supply voltage. The 40-PDIP package is recommended for hand-prototyping and educational use, while the QFN variants suit volume SMD assemblies.

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PIC18LF45K42T-I/ML - 64MHz 8-bit MCU 32KB 44-QFN | Microchip
PIC18LF45K42T-I/ML

PIC18LF45K42T-I/ML - 64MHz 8-bit MCU 32KB 44-QFN | Microchip

The Microchip Technology PIC18LF45K42T-I/ML is an 8-bit PIC18 microcontroller in the XLP family, integrating 32KB of Flash program memory, 2KB of SRAM and 256 bytes of EEPROM, and operating at up to 64MHz from a 1.8V to 3.6V supply. It is housed in a 44-pin QFN (8x8 mm) package with an exposed thermal pad, designated by the /ML suffix. An 8-bit microcontroller (MCU) is a programmable computing IC that integrates CPU, non-volatile program memory, RAM, and a peripheral set onto a single die. It occupies the middle of the embedded hierarchy: transistor -> logic gate -> microprocessor -> microcontroller -> embedded system. The "LF" prefix indicates the low-voltage core designed for battery-friendly XLP (eXtreme Low Power) operation, suitable for always-on IoT and portable products. Key features include a 12-bit ADC2 with computation, a 5-bit DAC, two comparators, multiple PWM channels, vector interrupts, DMA, MAP (Memory Access Partitioning), a Device Information Area (DIA), and Core Independent Peripherals. The 36 I/O pins provide flexibility for mixed-signal designs. Architecturally, the device uses Microchip's enhanced PIC18 RISC core with a modified Harvard bus and 16-bit wide instructions fetched from Flash while data is moved over an 8-bit path. Independent peripheral clocks allow the CPU to sleep while peripherals continue to service events, supporting deep XLP sleep currents in the nanoamp range for battery applications. Typical uses include low-power IoT sensor nodes, battery-powered wearables, consumer appliances, motor and lighting control, USB-CDC/HID bridges, and industrial sensor interfaces. The combination of DMA and 12-bit ADC2 with computation enables deterministic signal acquisition without CPU intervention. When designing in, route the exposed pad (EP) to a solid ground copper pour to manage thermal dissipation and provide low-impedance return. Configure the PPS (Peripheral Pin Select) pins via the configuration registers during firmware bring-up to remap peripherals without PCB rework. This page synthesizes authorized distributor pricing, drop-in compatible alternatives, and practical design notes not aggregated in any single manufacturer document.

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PIC18LF45K42T-I/PT - 8-bit 64MHz 32KB Flash MCU | Microchip
PIC18LF45K42T-I/PT

PIC18LF45K42T-I/PT - 8-bit 64MHz 32KB Flash MCU | Microchip

The Microchip PIC18LF45K42T-I/PT is an 8-bit PIC18 XLP microcontroller delivering 64 MIPS at 64 MHz with 32 KB Flash, 2 KB SRAM and 256 B EEPROM in a 44-pin TQFP (10x10) package. The 'LF' prefix designates the low-voltage (1.8 V to 3.6 V) variant of the K42 family, while the 'T' suffix denotes tape-and-reel packaging, and the 'I' industrial temperature grade spans -40 C to +85 C. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, non-volatile program memory, working RAM, and a rich set of peripherals such as ADC, timers, communication interfaces and interrupt controllers. PIC18F/LF devices sit in Microchip's mid-range 8-bit portfolio, with the K42 generation extending the line by adding vectored interrupts, DMA, math accelerator (MAC), device information area (DIA) and configurable logic cells. The K42 hierarchy is: PIC18 MCU -> 8-bit PIC -> microcontroller -> embedded computing -> semiconductor. Key features include 36 general-purpose I/O pins, a 12-bit ADC with computation, a 5-bit DAC, two comparators, multiple PWM/SCCP modules, vector interrupts with a fixed-latency context save, DMA-capable peripherals and zero-cross detection. The XLP (eXtreme Low Power) technology typically delivers <50 nA sleep current with RTC retention, enabling multi-year battery life in duty-cycled applications. The K42 architecture employs a 14-bit instruction word with an 8-bit data path and a hardware multiplier, plus an internal 64 MHz HFINTOSC accurate to within +/-2 percent across temperature and voltage. Peripheral pin select (PPS) remaps most digital functions to a wide choice of I/O pins, simplifying PCB routing. Typical applications include industrial sensor interfaces, low-power IoT end nodes, USB-CDC or UART bridges, battery-powered home-automation controllers, automotive body and lighting subsystems, motor control (BLDC driver companion), and consumer appliances requiring capacitive touch and 12-bit analog front-ends. When designing with this part, ensure your firmware toolchain (MPLAB X IDE with XC8 compiler or MPLAB XC8 PRO) supports the K42 family and that you leverage the PPS mapping tables in the datasheet to avoid pin conflicts. For deep-sleep RTC retention, use the RTCC with an external 32.768 kHz crystal to achieve the lowest power budget. This page consolidates distributor pricing, parametric-equivalent alternatives and design considerations not available on any single manufacturer or distributor page, providing a one-stop engineering reference for the PIC18LF45K42T-I/PT.

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PIC18LF45K50-E/P - 8-Bit USB MCU 48MHz 32KB DIP | Microchip
PIC18LF45K50-E/P

PIC18LF45K50-E/P - 8-Bit USB MCU 48MHz 32KB DIP | Microchip

The Microchip Technology PIC18LF45K50-E/P is an 8-bit PIC18 microcontroller with integrated USB 2.0 full-speed transceiver, 32KB of Flash program memory, and a 48MHz internal oscillator, housed in a 40-pin PDIP (DIP-40, 0.600 inch) through-hole package. As a member of the PIC18LFxxK50 family, it operates from a 1.8V to 3.6V supply rail and delivers up to 16 MIPS of processing throughput, while incorporating Microchip's nanoWatt XLP extreme low-power technology for battery-aware designs. 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 core uses an enhanced RISC architecture with 16-bit instructions, optimized for deterministic interrupt response. Microcontrollers serve as the decision-making brain in embedded systems across industrial, consumer, automotive, and IoT segments, where they translate sensor input into actuator output under software control. Key features of the PIC18LF45K50-E/P include 32KB (16K x 16) of self-programmable Flash, 2048 bytes of SRAM, 256 bytes of EEPROM, 36 digital I/O pins, a 25-channel 10-bit ADC, two analog comparators, two CCP modules, an enhanced USART, MSSP (I2C/SPI), and a USB 2.0 full-speed (12 Mbps) interface with on-chip transceiver. The integrated USB PHY eliminates the need for external pull-up resistors in low-speed mode and supports HID, CDC, and vendor-class device firmware stacks. XLP sleep currents as low as 20 nA enable multi-year coin-cell battery operation. Architecturally, the PIC18LF45K50-E/P pairs the standard PIC18 pipeline with a USB SIE that handles packet framing and CRC, freeing the CPU for application code. Programmable brown-out reset, watchdog timer, and on-chip debug support (via ICSP) accelerate firmware development with MPLAB X IDE and the MPLAB Snap/Pickit programmers. Typical applications include USB HID peripherals (keyboards, mice, custom input devices), USB-to-UART bridge dongles, low-power wireless sensor nodes, battery-powered data loggers, industrial control panels, and consumer accessories that require a stable USB stack without external PHY circuitry. The 40-pin PDIP package suits breadboarding, educational kits, and legacy through-hole production lines where socketed serviceability matters. When designing with this part, evaluate the 1.8V to 3.6V supply range carefully against your system bus voltage (USB 3.3V regulated rails are typical). The DIP-40 footprint occupies substantial PCB real estate compared to TQFP/QFN siblings (PIC18LF45K50-I/PT, /ML), so plan layout for socketed prototypes or harness board revisions. This page synthesizes distributor pricing, verified same-package drop-in alternatives drawn from the same PIC18LFxxK50 family, and practical design notes not found on a single manufacturer page, giving engineers a one-stop reference for sourcing and replacement decisions.

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PIC18LF45K50-E/PT - 8-bit 48MHz 32KB Flash MCU | Microchip
PIC18LF45K50-E/PT

PIC18LF45K50-E/PT - 8-bit 48MHz 32KB Flash MCU | Microchip

The Microchip Technology PIC18LF45K50-E/PT is an 8-bit PIC microcontroller from the PIC® XLP™ 18K family featuring 32KB of Flash program memory, 2KB of RAM, and a 48MHz internal oscillator, housed in a 44-pin TQFP (10x10 mm) package. It integrates a full-speed USB 2.0 transceiver, 25-channel 10-bit ADC, and Microchip's eXtreme Low Power (XLP) technology for energy-sensitive designs. The 'LF' prefix designates a wide operating voltage range of 1.8V to 3.6V, optimized for battery-powered applications. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory (Flash), data memory (RAM), and peripherals on one die. The PIC18F/LF family uses an enhanced Harvard RISC architecture with 16-bit instructions and 8-bit data paths, positioning it between simple 8-bit controllers (PIC10/12/16) and 16-bit dsPIC or 32-bit ARM Cortex-M devices in Microchip's portfolio. The 'F' (Flash) and 'LF' (Low-Voltage Flash) variants differentiate only by operating voltage range. Key features include 32KB (16K x 16) Flash program memory, 2KB SRAM, 256B EEPROM, 36 digital I/O pins, a 10-bit ADC with 25 channels, two 8-bit timers plus three 16-bit timers, two comparators, two CCP modules, and an enhanced USART. The integrated USB 2.0 full-speed transceiver with on-chip 3.3V regulator eliminates the need for external USB components, making this MCU ideal for USB peripherals on battery power. Architecturally, the PIC18LF45K50 uses a 16-bit instruction word with an 8-bit data bus, an 8-level hardware stack, and a single-cycle hardware multiplier. The 48MHz internal oscillator provides 12 MIPS performance with ±1% accuracy across voltage and temperature. XLP technology enables sleep currents below 50 nA, watchdog timer currents under 400 nA, and peripheral functions while drawing microamps. Typical applications include USB HID peripherals (keyboards, mice, custom input devices), battery-powered data loggers, USB-to-UART bridges, environmental sensor nodes, and consumer electronics with USB connectivity. The combination of integrated USB and XLP makes it particularly attractive for self-powered USB devices drawing power from the bus only when active. When designing with this device, ensure the VUSB pin has a 220 nF decoupling capacitor and the D+/D- lines use 90Ω differential impedance. The internal 3.3V USB regulator requires a 10µF bulk capacitor on the VUSB3V3 pin. For bus-powered designs, total current draw must remain below 100 mA (low-power) or 500 mA (high-power) per USB specifications. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the standalone manufacturer datasheet.

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PIC18LF45K50-I/P - 8-Bit 48MHz 32KB Flash MCU | Microchip
PIC18LF45K50-I/P

PIC18LF45K50-I/P - 8-Bit 48MHz 32KB Flash MCU | Microchip

The Microchip Technology PIC18LF45K50-I/P is an 8-bit PIC microcontroller with 48 MHz CPU speed, 32 KB (16K x 16) FLASH program memory, and a 40-pin PDIP package. It is part of the PIC18LF XLP family with integrated USB 2.0 Full-Speed support and operates from 1.8V to 3.6V (LF low-voltage variant). The part ships in a through-hole 40-DIP (0.600 inch, 15.24 mm) package, easing breadboard and legacy design-in. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, non-volatile program memory (Flash/ROM), working RAM, and a configurable set of peripherals (ADC, timers, communication interfaces, I/O). Within the semiconductor hierarchy, MCUs sit under digital logic ICs > microcontrollers > embedded controllers. PIC microcontrollers from Microchip use a modified Harvard RISC architecture with separate program and data buses, enabling deterministic instruction throughput and predictable interrupt latency. Key features of the PIC18LF45K50-I/P include 32 KB self-programmable Flash, 2 KB RAM, 256 B EEPROM, up to 35 digital I/O pins, a 10-bit ADC up to 200 ksps, multiple Enhanced USART, MSSP (SPI/I2C) peripherals, and an integrated USB 2.0 Full-Speed transceiver — a rare feature for the 40-pin DIP class. The eXtreme Low Power (XLP) technology variants (LF) deliver nanoWatt sleep currents suitable for battery-powered products. The PIC18LF45K50 uses a 16-bit modified Harvard instruction set with an 8-bit data path, providing a single-cycle instruction time of 83 ns at 48 MHz. The integrated USB 2.0 Full-Speed module includes an on-chip transceiver and 3.3V regulator, simplifying USB device designs. Hardware multipliers and a 32-level hardware stack accelerate C-compiled code. Typical applications include USB HID peripherals, industrial sensor interfaces, battery-powered data loggers, educational/development boards, and low-cost consumer electronics. The 40-pin PDIP package is preferred for hobbyist projects, prototypes, and through-hole manufacturing. Designers choose this part when USB connectivity, generous Flash, and low-voltage operation are all required in a DIP form factor. When designing with the PIC18LF45K50-I/P, ensure the VUSB pin is connected to a 3.3V source (the internal USB regulator can supply 3.3V from VDD), place a decoupling capacitor of at least 0.1 uF near each power pin, and verify the oscillator configuration matches the FCFUSES setting in code. For battery applications, leverage the XLP sleep modes with typical current below 1 uA. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes for the PIC18LF45K50-I/P not found on a single manufacturer or distributor page.

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PIC18LF45K50-I/PT - 32KB Flash 8-bit XLP MCU 44-TQFP | Microchip
PIC18LF45K50-I/PT

PIC18LF45K50-I/PT - 32KB Flash 8-bit XLP MCU 44-TQFP | Microchip

The Microchip Technology PIC18LF45K50-I/PT is an 8-bit PIC® XLP™ eXtreme Low-Power microcontroller featuring 32 KB (16K x 16) Flash program memory, 48 MHz maximum CPU speed (16 MIPS performance), and a 44-pin TQFP (10x10 mm) package. The 'LF' designation indicates the low-voltage F-variant core operating from 1.8V to 3.6V, while the standard 'F' variant operates up to 5.5V; both share identical peripherals and pinout. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, RAM, Flash program memory, and peripherals into one package. Within the broader taxonomy, the PIC18LF45K50 sits in the PIC18 enhanced mid-range family of Microchip's 8-bit PIC® RISC architecture, which provides up to 16 MIPS throughput at 48 MHz. The eXLP nanoWatt technology adds multiple low-power sleep modes (down to sub-uA standby), brown-out reset, and ultra-low-power RTCC, making the device suitable for battery-powered and energy-harvesting designs. Key specifications include 32 KB Flash, 2 KB SRAM, 256 B EEPROM, 35 digital I/O pins, and rich connectivity: full-speed USB 2.0 (device/host/OTG), two USART modules, one SPI, and one I²C. The integrated 10-bit ADC with up to 25 channels and multiple timer/capture/PWM modules support mixed-signal embedded designs. The 44-TQFP package exposes 35 I/O lines plus dedicated USB D+/D- pins, supporting designs that need USB without an external transceiver. Architecturally, the PIC18LF45K50 uses a 16-bit instruction word with 8-bit data path, hardware multiplier, and an 8-level hardware stack. The core supports both C and assembly development under MPLAB X IDE with the XC8 compiler, and is in-circuit serial programmable (ICSP) via two pins, enabling field firmware updates. The XLP nanoWatt features include low-power RTC, deep sleep with RAM retention, and ultra-low-power wake-on-interrupt. Typical applications include USB HID peripherals (keyboards, mice, custom HID), battery-powered sensor nodes with USB charging, consumer electronics with USB-C interfaces, industrial data loggers with USB connectivity, and educational/development boards. The 1.8V minimum supply enables direct Li-ion or two-AA battery operation. The device also integrates a charge time measurement unit (CTMU) for capacitive touch and a 5-bit DAC for analog trimming. When designing with the PIC18LF45K50, ensure the supply stays within 1.8V-3.6V for the LF variant; do not exceed 3.6V. Provide a 20 MHz crystal or use the internal 16 MHz HFINTOSC for USB full-speed operation, because USB requires a 48 MHz clock derived from the PLL. Decouple VDD with 100 nF ceramic at every supply pin and route the D+/D- pair as a 90-ohm differential. This page synthesizes distributor pricing as of 2026-09-29, drop-in same-family PIC18LF alternatives from the Microchip catalogue, and practical USB + low-power design notes not compiled in the manufacturer datasheet alone.

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