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PIC18LF46J13T-I/ML - 64KB Flash 8-bit MCU, 44-QFN | Microchip
PIC18LF46J13T-I/ML

PIC18LF46J13T-I/ML - 64KB Flash 8-bit MCU, 44-QFN | Microchip

The Microchip Technology PIC18LF46J13T-I/ML is a low-power 8-bit PIC microcontroller with 64KB Flash program memory, 3.8KB RAM, and a 12-bit ADC, housed in a 44-pin QFN package with exposed thermal pad. It operates from 2.0V to 3.6V, runs the CPU up to 48 MHz (12 MIPS), and is optimized for low-voltage 2.5V/3.3V designs that need rich connectivity and analog integration. What is an 8-bit microcontroller? An MCU (microcontroller unit) is a single-chip computer integrating a CPU core, program memory (Flash), data memory (RAM), non-volatile EEPROM, and a set of peripherals (ADC, timers, communication ports). 8-bit MCUs like the PIC18 family use an 8-bit data path optimized for low power, deterministic interrupt response, and ease of use, sitting under the broader category of embedded computing devices alongside 16-bit and 32-bit MCUs. Key features include 34 digital I/O pins, an internal oscillator, two USART, two SPI, two I2C, USB 2.0 full-speed transceiver (device/host/OTG), a 12-channel 12-bit ADC, two analog comparators, and CTMU charge-time measurement hardware. The nanoWatt XLP (eXtreme Low Power) technology delivers sleep currents in the nanoampere range, enabling multi-year battery life on coin cells. The device uses a Harvard-architecture PIC core with hardware multiplier, providing deterministic 12 MIPS throughput and a 16-bit instruction set. The integrated USB 2.0 transceiver with on-chip PHY eliminates external USB chips, while the 12-bit ADC with auto-scan supports sensor arrays directly. Internal voltage reference and temperature indicator reduce external components. Typical applications include USB peripherals, low-power wireless sensor nodes, medical handheld instruments, consumer electronics with USB charging/communication, and industrial HMI panels. The combination of on-chip USB, ADC, and nanoWatt XLP suits mains-powered or battery-powered mixed-signal designs. When designing with this part, place a 100 nF decoupling capacitor on each VDD/VSS pair and route the exposed thermal pad to a continuous ground pour for best thermal and EMI performance. The 44-pin QFN requires PCB design with microvia or filled via array under the EP to meet solder-joint reliability targets. This page synthesizes distributor pricing, verified drop-in alternatives from the same QFN-44 footprint, and practical low-power design notes not consolidated in the manufacturer datasheet.

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PIC18LF46J13T-I/PT - 64KB Flash 8-bit XLP MCU | Microchip 44-TQFP
PIC18LF46J13T-I/PT

PIC18LF46J13T-I/PT - 64KB Flash 8-bit XLP MCU | Microchip 44-TQFP

The Microchip Technology PIC18LF46J13T-I/PT is an 8-bit PIC® XLP™ microcontroller from the PIC18J family, featuring 64KB (32K × 16) of Flash program memory, 4KB of RAM, and a 48 MHz internal oscillator speed, housed in a 44-pin TQFP (10 × 10 mm) package. As a low-power (LF) variant, it operates from a 2.0V to 3.6V supply, suiting battery-powered designs, while delivering up to 12 MIPS instruction throughput. The integrated 12-bit ADC (with up to 13 channels), on-chip voltage reference, and nanoWatt XLP sleep modes make it well suited for low-duty-cycle measurement systems. An 8-bit microcontroller (MCU) is a small computing system on a single integrated circuit that integrates a CPU, RAM, Flash/ROM program memory, peripherals, and I/O. Within the broader MCU taxonomy, the PIC18 architecture sits between baseline PIC10/12/16 parts and the more advanced PIC24/dsPIC line, combining C-friendly Harvard architecture, RISC-like instruction set, and ample peripherals. The PIC18LF46J13T-I/PT targets general-purpose (GP) embedded control where low power, ample code space, and integrated analog are required. Key features include 64KB Flash with self-programming capability, 4KB RAM, 10-bit/12-bit ADC with 13 input channels, multiple timers (8-bit and 16-bit), two comparators, Capture/Compare/PWM (ECCP) modules, I²C, SPI, and enhanced USART. The nanoWatt XLP technology delivers sub-µA sleep currents suitable for energy harvesting and remote-sensor nodes. Memory endurance is rated at 100K erase/write cycles minimum, and Flash retention is specified at 20 years typical. Technically, the device uses a 16-bit instruction word with a 2-stage pipeline, executes most instructions in one cycle, and supports hardware multipliers for 8 × 8 single-cycle unsigned math. Three hardware interrupt sources and 256-byte data EEPROM round out the embedded feature set. The 44-pin TQFP exposes 34 digital I/O pins plus dedicated analog and oscillator functions. Typical applications include portable medical devices, environmental sensor hubs, smart thermostats, USB-key peripherals, and industrial HMI panels. The wide operating temperature range (-40 °C to +85 °C industrial) covers outdoor and factory-floor deployments. A key design consideration: although this is the LF (low-voltage) variant, the F variant (PIC18F46J13T-I/PT) covers the 2.15V–3.6V range with slightly different electrical characteristics — verify Vdd margin against worst-case ADC reference noise before board bring-up. This page synthesizes drop-in alternatives, comparison data, and practical design notes not found on standard distributor listings.

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PIC18LF46J50-I/ML - 8-bit 48MHz USB MCU 64KB Flash | Microchip
PIC18LF46J50-I/ML

PIC18LF46J50-I/ML - 8-bit 48MHz USB MCU 64KB Flash | Microchip

The Microchip Technology PIC18LF46J50-I/ML is an 8-bit PIC18 microcontroller running at 48 MHz with 64 KB of Flash program memory and integrated full-speed USB 2.0, housed in a 44-pin QFN (8x8 mm) package. It targets low-power, USB-connected embedded designs and belongs to the PIC18 J-series family with nanoWatt XLP power-saving features. Core specifications include 48 MHz CPU speed, 64 KB (32K x 16) Flash, 4 KB RAM, and 2.5V/3.3V dual-voltage operation from the LF process variant. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash), data memory (RAM), and peripherals such as timers, communication interfaces, and analog modules. 8-bit MCUs are widely used in cost-sensitive, deterministic embedded applications because of their simple instruction set, predictable interrupt latency, and low power consumption. The PIC18 architecture is an enhanced 8-bit core with a 16-bit instruction word, hardware multiplier, and linear addressing, sitting between traditional 8-bit controllers and more complex 16/32-bit devices. Within Microchip's portfolio, the PIC18LF46J50 belongs to the J-series, which adds full-speed USB, deep-sleep modes, and a wider voltage range. Key features include on-chip full-speed USB 2.0 device/host/OTG, 36 digital I/O pins, multiple serial interfaces (UART, SPI, I2C), a 10-bit ADC with up to 13 channels, and nanoWatt XLP deep-sleep current in the nanoamp range. The 44-QFN package provides a small 8x8 mm footprint with an exposed thermal pad for improved heat dissipation, making it well-suited for space-constrained USB dongles, sensor hubs, and consumer peripherals. Typical applications include USB HID peripherals such as keyboards, mice, and game controllers, USB-to-UART bridges, low-power sensor data loggers, and battery-powered IoT edge nodes. The wide 2.0-3.6V operating range and deep-sleep modes allow direct Li-ion or 2xAA battery operation while still supporting USB when plugged in. When designing with this part, place the 44-QFN exposed pad over a continuous ground plane with multiple thermal vias to meet the package's thermal and electrical requirements. Decoupling capacitors must be placed as close as possible to the VDD/VSS pins and the VUSB pin, following the USB transceiver layout guidelines in the datasheet.

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PIC18LF46J50T-I/ML - 8-bit 48MHz USB MCU 64KB Flash | Microchip
PIC18LF46J50T-I/ML

PIC18LF46J50T-I/ML - 8-bit 48MHz USB MCU 64KB Flash | Microchip

The Microchip Technology PIC18LF46J50T-I/ML is an 8-bit PIC RISC microcontroller with integrated full-speed USB 2.0, delivering 48 MHz CPU performance, 64 KB Flash program memory, and 4 KB RAM in a 44-pin QFN (8x8) package with exposed pad. It operates from a 2.0V to 3.6V supply range and belongs to the nanoWatt XLP power-managed family. Tape & Reel (T/R) packaging supports high-volume assembly. A microcontroller (MCU) is a single-chip computer containing a CPU core, program and data memory, peripherals, and I/O. The PIC18 family from Microchip uses a modified Harvard RISC architecture with 16-bit opcodes and 8-bit data, optimized for deterministic interrupt response and low power. The J-series sub-family adds nanoWatt XLP technology for deep sleep currents in the nanoamp range, ideal for battery-powered and energy-harvesting designs. Key features include a full-speed USB 2.0 device/host/OTG transceiver, 64 KB self-programmable Flash with 4 KB RAM, 13 ADC channels with 10-bit resolution, multiple PWM/Capture/Compare modules, and 36 digital I/O pins. The device includes a real-time clock calendar, two analog comparators, and a charge time measurement unit (CTMU) for capacitive touch sensing. The 8-bit modified Harvard RISC core executes most instructions in one cycle, achieving up to 16 MIPS throughput at 48 MHz. Typical applications include USB peripherals, touch-sensitive user interfaces, low-power wireless sensor nodes, industrial control interfaces, and portable medical devices. USB connectivity eliminates external transceivers in HID-class designs such as mice, keyboards, and data loggers. Design considerations: the exposed thermal pad on the QFN package must be soldered to a ground plane for electrical and thermal performance. Use Microchip's MPLAB X IDE with the XC8 compiler for firmware development. This page consolidates distributor pricing, drop-in alternatives, and applied design guidance that goes beyond what the manufacturer datasheet alone provides.

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PIC18LF46J53-I/ML - 64KB Flash USB MCU 8-Bit 48MHz | Microchip
PIC18LF46J53-I/ML

PIC18LF46J53-I/ML - 64KB Flash USB MCU 8-Bit 48MHz | Microchip

The Microchip Technology PIC18LF46J53-I/ML is an 8-bit PIC18 microcontroller from the PIC18 XLP 18J family with integrated full-speed USB 2.0, 64KB of Flash program memory and 4KB of RAM, operating up to 48 MHz (12 MIPS) in a 44-pin QFN (8x8) exposed-pad package. The LF variant supports a wide 2.0V to 3.6V core supply for low-power designs, while the 64-pin QFN variant (I/PT) shares the same die for layout flexibility. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, non-volatile program memory (Flash), volatile working memory (RAM), and a rich set of peripherals (ADC, timers, communication ports, USB). The PIC18 family uses Microchip's enhanced Harvard RISC architecture, where separate program and data buses let the CPU fetch an instruction and access data in the same clock cycle. The LF 'J' series is built on a deep-submicron process that enables nanoWatt XLP sleep currents measured in nanoamps, making the device suitable for battery-powered and energy-harvesting designs. Key features of this part include: 12-bit A/D converter with up to 13 channels, two analog comparators, a 5-bit DAC, multiple Enhanced USART, SPI, and I2C peripherals, two capture/compare/PWM modules, and a full-speed USB 2.0 device/host/OTG controller with an internal 3.3V regulator. The 48 MHz internal oscillator and 31 kHz low-power secondary oscillator provide flexible clocking, while the nanoWatt XLP technology delivers sleep currents below 100 nA typical. Architecturally, the device uses a modified Harvard core with a hardware multiply, 16-bit instruction width, and a 32-level hardware stack. The internal 3.3V LDO allows direct connection to a single-cell Li-Ion or 5V USB bus, while the integrated USB transceiver and on-chip pull-up resistors simplify USB-device designs by removing external components. Typical applications include USB HID peripherals such as mice, keyboards, and game controllers, USB-to-UART bridges, USB data loggers, medical USB sensors, low-power wireless sensor nodes, and consumer electronics that require a 12-bit ADC. Its combination of low power, integrated USB, and 44-pin QFN makes it well suited for space-constrained handheld designs. When designing with this part, use the exposed pad as the primary thermal and electrical ground path, and pair the device with MPLAB X IDE and one of Microchip's programmer/debuggers such as PICkit 5, ICD 4, or MPLAB Snap for development. Ensure the 3.3V LDO bulk capacitor meets the datasheet's ESR requirement, and configure the VUSB3V3 pin to source or sink mode per your bus-power architecture. This page combines distributor pricing, verified drop-in alternatives, and practical design notes that the bare datasheet does not offer.

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PIC18LF46J53T-I/ML - 8-bit USB MCU 64KB Flash 48MHz | Microchip
PIC18LF46J53T-I/ML

PIC18LF46J53T-I/ML - 8-bit USB MCU 64KB Flash 48MHz | Microchip

The Microchip Technology PIC18LF46J53T-I/ML is an 8-bit PIC18 nanoWatt XLP microcontroller featuring 64KB Flash program memory, 3.8KB RAM, an integrated USB 2.0 full-speed transceiver, and a 12-bit ADC, housed in a 44-pin VQFN (ML) 8x8mm exposed-pad package. It operates up to 48 MHz delivering 12 MIPS, with a wide 2.0 V to 3.6 V supply range (the "LF" family marker). The "T" suffix indicates Tape & Reel packaging and the "I" industrial temperature grade of -40C to +85C. A microcontroller (MCU) is a single-chip computer containing a CPU core, program memory (Flash), data memory (RAM), and a rich set of peripherals such as timers, communication interfaces, and analog converters. PIC18LF46J53 belongs to the PIC18 8-bit RISC family, the low-power (LF) variant of the J-series, and within the power management hierarchy it sits at the embedded control IC level, sitting above simple logic ICs and below MPU-class devices. This places the part in the broader semiconductor hypernym chain: MCU -> 8-bit MCU -> PIC18 -> PIC18F/LF J-series -> PIC18LF46J53. Key differentiating features include 34 programmable I/O pins, a 12-bit A/D converter with up to 13 input channels, two analog comparators, two UART/USART, SPI and I2C (MSSP) peripherals, a full-speed USB 2.0 device/host/OTG transceiver, two 8-bit and three 16-bit timers, and nanoWatt XLP technology for sub-microamp sleep currents. The internal 31 kHz and 8 MHz oscillators with PLL flexibility reduce external component count. The "J" series core runs from 2.0 V to 3.6 V versus the 2.0 V to 5.5 V of classic PIC18F, making it suited to low-voltage USB and battery designs. The architecture uses a modified Harvard RISC core with 16-bit opcodes and a 16-bit data path, enabling single-cycle 16-bit fetches. With hardware multiplier, deterministic interrupt latency, and instruction pre-fetch, the device achieves 12 MIPS at 48 MHz while still supporting nanoWatt sleep modes useful for battery-powered peripherals. The integrated USB SIE eliminates the external PHY requirement for low-speed and full-speed USB. Typical applications include USB Human Interface Devices (HID), CDC serial bridges, USB audio peripherals, low-power sensor nodes, and consumer electronics with USB charging/data ports. The exposed pad (EP) on the VQFN provides a low-thermal-resistance path (~28 C/W) for higher-power USB-host applications. When designing with this MCU, place the decoupling capacitors as close as possible to VDD/VSS pairs and connect the exposed pad to a contiguous ground plane for thermal dissipation. For USB applications, the D+/D- traces must be 45-ohm impedance-controlled and length-matched within 150 mil. This page synthesizes distributor pricing, drop-in alternatives from the PIC18 J-series family, and practical design notes not found in the bare manufacturer datasheet.

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PIC18LF46K22-E/MV - 64KB Flash 8-bit MCU | Microchip
PIC18LF46K22-E/MV

PIC18LF46K22-E/MV - 64KB Flash 8-bit MCU | Microchip

The Microchip Technology PIC18LF46K22-E/MV is a low-power, high-performance 8-bit microcontroller from the PIC18F/LF K22 family, delivering 48 MIPS of CPU throughput at 48 MHz from an internal oscillator while consuming nanoWatt XLP-class quiescent current. It integrates 64 KB of Flash program memory (32K × 16), 3.8 KB of RAM, 1 KB of EEPROM, and 35 digital I/O pins in a 40-pin UQFN (5 × 5 mm) exposed-pad package. What is an 8-bit microcontroller? An 8-bit microcontroller (MCU) is a single-chip computer that processes data 8 bits at a time and integrates a CPU core, program memory (Flash/ROM), data memory (RAM), non-volatile storage (EEPROM), peripherals (ADC, timers, communication interfaces), and I/O into one package. PIC18F-family MCUs sit in the middle of Microchip's 8-bit portfolio, above baseline PIC16 and below 16-bit dsPIC33 devices, and are commonly used as power-conscious controllers in industrial, automotive, white-goods, and consumer applications where deterministic behaviour and low standby current matter more than raw MHz throughput. The LF (low-voltage / low-power) variant supports operation down to 1.8 V, making it suitable for battery-powered and energy-harvesting designs. Key peripherals include a 10-bit ADC with up to 28 input channels, two comparators, two SPI/I²C, one EUSART, three 8-bit and four 16-bit timers, and a charge-time measurement unit (CTMU) for capacitive touch. The nanoWatt XLP technology provides multiple low-power sleep modes (idle, sleep, deep sleep, ultra-low-power wake) with currents in the nA range, allowing years of operation from a single coin cell. The "/MV" suffix indicates the 40-pin UQFN 5 × 5 mm exposed-pad package, the smallest footprint in the K22 family and ideal for space-constrained PCB designs. Typical applications include handheld instruments, IoT sensor nodes, automotive body controllers, USB/HID peripherals, capacitive-touch user interfaces, and low-power wireless sensor platforms where the part's 48 MHz core handles protocol stacks while its nanoWatt sleep modes preserve battery life. When designing with this part, pay attention to the decoupling network, the exposed-pad PCB landing, and the in-circuit serial programming (ICSP) pins. For new designs, the K42 family is generally recommended unless the K22's specific peripheral mix is required.

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PIC18LF46K22-E/P - 64KB Flash 8-bit XLP MCU | Microchip
PIC18LF46K22-E/P

PIC18LF46K22-E/P - 64KB Flash 8-bit XLP MCU | Microchip

The Microchip Technology PIC18LF46K22-E/P is an 8-bit RISC microcontroller in the PIC18 XLP family, featuring 64KB (32K x 16 words) of Flash program memory, 3,896 bytes of RAM, and 1,024 bytes of EEPROM, housed in a 40-pin PDIP through-hole package. It executes instructions at up to 48 MHz from an internal oscillator, while the device family supports operation up to 64 MHz, and operates from a wide 1.8V to 3.6V supply range suited to battery-powered designs. The 'LF' prefix designates the low-voltage variant of the K22 family with nanoWatt XLP extreme-low-power technology, while the 'E' suffix denotes the extended temperature grade of -40C to +125C. An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit data path, integrating a CPU, non-volatile program memory, volatile RAM, peripherals, and I/O on a single die. The PIC18 architecture is an enhanced 8-bit Harvard RISC core with a hardware multiplier, prioritized interrupts, and a 16-bit instruction word, sitting above the PIC16/PIC12 families in Microchip's 8-bit portfolio. Within the power-management hierarchy, the XLP nanoWatt technology places the PIC18LF46K22 in the ultra-low-power MCU tier, enabling sleep currents in the nanoamp range and active currents in the microamp range. Key differentiating features include 35 digital I/O pins, two Enhanced USART modules supporting LIN/IrDA, two MSSP (SPI/I2C) ports, a 12-channel 10-bit ADC with computation, five CCP/ECCP modules for PWM/motor control, and dual analog comparators. The device also provides a charge time measurement unit (CTMU) for capacitive touch and a 16-bit timer/counter set, making it well suited for mixed-signal embedded designs. Typical applications include low-power battery sensor nodes, capacitive touch user interfaces, motor control with ECCP PWM, industrial control panels, USB-less human-interface peripherals, and remote controls where the extended -40C to +125C range is needed. A common design tip is to leverage the multiple low-power modes (Sleep, Idle, Doze) and the RTCC with its dedicated 32 kHz domain to keep average consumption below 1 uA in duty-cycled designs. This page synthesizes distributor pricing, same-family drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.

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PIC18LF46K22-E/PT - 64KB Flash 8-bit MCU 48MHz | Microchip
PIC18LF46K22-E/PT

PIC18LF46K22-E/PT - 64KB Flash 8-bit MCU 48MHz | Microchip

The Microchip Technology PIC18LF46K22-E/PT is an 8-bit RISC microcontroller built on the PIC18 CPU core, featuring 64KB of Flash program memory (32K x 16 words), 3,896 bytes of SRAM, and 1KB of data EEPROM, operating at up to 48MHz. It is housed in a 44-pin TQFP (10x10 mm) package and runs from a 1.8V to 3.6V supply, making it part of Microchip's nanoWatt XLP extreme-low-power family for battery-friendly designs. A microcontroller (MCU) is a single-chip computer that integrates a CPU, memory (Flash, SRAM, EEPROM), and peripherals (ADC, timers, communication interfaces) on one die. The PIC18LF46K22 belongs to the 8-bit PIC18 architecture hierarchy: PIC18 family -> 8-bit MCU -> microcontroller -> embedded processor -> semiconductor IC. Its nanoWatt XLP technology adds sleep currents in the nanoamp range, making it well suited for always-on, energy-harvesting, or battery-powered designs where quiescent draw dominates lifetime. Key features include two I2C, two SPI, two USART (including LIN-capable) interfaces, a 12-channel 10-bit ADC, multiple 8/16-bit timers with PWM, and a charge time measurement unit (CTMU) for capacitive touch. The 64KB Flash supports self-programmability under software control, enabling in-field firmware updates without an external programmer. The 44-pin TQFP footprint gives access to up to 36 I/O pins and supports JTAG/ICSP in-circuit debugging through dedicated pins. Typical applications include low-power sensor nodes, pulse oximeter front ends, portable medical instruments, industrial HMI panels, USB-to-UART bridges, and battery-backed IoT devices that demand long sleep intervals. The CTMU peripheral also enables capacitive touch keypads and slider interfaces without an external touch controller. When designing with this part, populate the VDD/VSS pins with 100 nF + 10 uF decoupling placed within a few millimeters of the package, and use the on-chip LDO (if enabled in configuration bits) for cleaner ADC measurements. For sleep-mode designs, verify the MCLR pull-up and WDT configuration to avoid unwanted resets and current draw. This page synthesizes distributor pricing, parametric proximity-ranked drop-in alternatives, and practical design notes beyond what the manufacturer datasheet provides, structured for fast lookup during component selection and PCB bring-up.

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PIC18LF46K22-I/ML - 8-bit XLP MCU 64KB Flash 44-QFN | Microchip
PIC18LF46K22-I/ML

PIC18LF46K22-I/ML - 8-bit XLP MCU 64KB Flash 44-QFN | Microchip

The Microchip Technology PIC18LF46K22-I/ML is an 8-bit PIC18F microcontroller in the nanoWatt XLP family, offering 64 KB of Flash program memory, 3,968 bytes of RAM, and 1 KB of EEPROM in a 44-pin QFN (8x8 mm) package. The device operates up to 64 MHz (16 MIPS instruction throughput) from a 1.8 V to 3.6 V supply, with the LF prefix denoting the low-voltage F-core variant for battery-friendly designs. The -I suffix denotes the industrial -40 C to +85 C operating range, and the /ML suffix marks the matte-tin 44-QFN (ML) package with exposed thermal pad. A microcontroller (MCU) is a single-chip computer integrating a CPU core, program memory (Flash/ROM), data memory (RAM), peripherals, and I/O. The PIC18 family is Microchip's 8-bit RISC architecture using a 16-bit instruction word and a hardware accumulator; the K22 sub-family adds the nanoWatt XLP (eXtra Low Power) energy-management features, deep-sleep modes drawing < 50 nA, and peripheral support for mTouch capacitive sensing, USB, and PWM-driven motor control. The PIC18LF46K22 sits in the PIC18 hierarchy: PIC18 -> 8-bit MCU -> nanoWatt XLP -> K22 series. Key features of this part include a 12-bit ADC with up to 28 channels, two analog comparators, four 8/16-bit timer/counters, two CCP and three ECCP PWM modules, two MSSP (SPI/I2C) and two EUSART (UART/LIN) ports, an mTouch capacitive-sensing peripheral, an on-chip 16 MHz internal oscillator, and CTMU charge-time measurement. The wide operating range of 1.8 V to 3.6 V allows direct Li-ion or 2x AA battery operation, while CTMU and RTCC support energy-aware applications. The 44-QFN (ML) package combines compact 8x8 mm board area with a thermal pad for higher-power dissipation. Typical applications include low-power sensor nodes, capacitive touch user interfaces, battery-powered medical and consumer products, USB/CDC human-interface devices, motor and lighting control via ECCP PWM, and industrial control front-ends. The deep-sleep modes with RTCC and WDT wake-up make it well-suited for energy-harvesting and remote-sensor designs. When designing with this MCU, allocate a solid GND copper pour under the exposed pad and stitch vias to the inner layer for thermal relief. Configure the configuration bits (CONFIG1H/2L/3H/4L) carefully to avoid an unintended oscillator source at first power-up; Microchip's MPLAB X IDE and XC8 compiler are the recommended tool chain for code development. This page synthesizes distributor pricing, same-package drop-in alternatives, and design notes that complement the manufacturer datasheet. Pricing data references XAIPART listings as of 2026-09-29 and may vary across authorized distributors.

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PIC18LF46K22-I/PT - 8-bit 64MHz XLP MCU 64KB Flash 44-TQFP | Microchip
PIC18LF46K22-I/PT

PIC18LF46K22-I/PT - 8-bit 64MHz XLP MCU 64KB Flash 44-TQFP | Microchip

The Microchip Technology PIC18LF46K22-I/PT is an 8-bit PIC microcontroller from the PIC18F/LF K22 family that combines high-performance compute with Microchip's nanoWatt XLP (eXtreme Low Power) technology. Built around an enhanced RISC architecture, it operates up to 64 MHz delivering up to 16 MIPS, integrates 64 KB of Flash program memory (32K x 16), 3,896 bytes of SRAM, and 1,024 bytes of EEPROM, and is housed in a 44-pin TQFP (10x10 mm) package. The 'LF' prefix denotes the wide-voltage F-variant core (1.8V-3.6V) optimized for battery-powered designs. An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit data path, combining a CPU, non-volatile program memory, RAM, peripherals, and interrupt logic in one package. The PIC18 family sits at the top of Microchip's 8-bit portfolio, sitting in the hierarchy: PIC18 -> 8-bit MCU -> microcontroller -> embedded processor -> semiconductor. The LF sub-family adds XLP nanoWatt technology that targets sleep currents below 50 nA in deep sleep modes, allowing coin-cell or energy-harvested products to wake only when needed. Key specifications include 35 digital I/O pins, an internal oscillator up to 64 MHz, configurable peripherals such as multiple UART, SPI, I2C, 10/12-bit ADC, comparators, and PWMs with auto-shutdown. The on-chip 16 MIPS performance lets designers execute DSP-style signal conditioning without external accelerators. The device also integrates an RTCC, mTouch capacitive-touch hardware, and a charge time measurement unit (CTMU) for sensor interfaces. Typical applications include home automation nodes, handheld instruments, industrial sensor monitoring, low-power IoT edge devices, and consumer electronics that demand rich peripherals in a small 44-pin footprint. The XLP sleep currents and 1.8V minimum VDD make it ideal for battery or energy-harvested designs where quiescent current dominates lifetime. When designing, always respect the 3.6V absolute maximum VDD for the 'LF' variant and de-couple VDD/AVDD with 100 nF plus bulk capacitance. Use ICSP pins (PGC/PGD) with proper isolation resistors so programming headers do not load the application circuit during debug. This page consolidates distributor pricing, drop-in TQFP alternatives, and practical design notes to help procurement and embedded engineers evaluate this part for low-power 8-bit designs.

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PIC18LF46K22T-I/MV - 8-Bit 64MHz 64KB Flash MCU | Microchip
PIC18LF46K22T-I/MV

PIC18LF46K22T-I/MV - 8-Bit 64MHz 64KB Flash MCU | Microchip

The Microchip PIC18LF46K22T-I/MV is an 8-bit PIC18 microcontroller in the nanoWatt XLP family, featuring 64 KB of Flash program memory, 3968 bytes of RAM, and 1024 bytes of data EEPROM, all housed in a 40-pin UQFN (5x5 mm) package with exposed pad. The LF prefix denotes the wide-voltage (1.8V to 3.6V) variant optimized for battery-powered applications, while the F-version runs from 2.3V to 5.5V. The device integrates a high-performance RISC CPU core capable of up to 64 MHz operation (16 MIPS) and a rich peripheral set including 35 I/O, multiple capture/compare/PWM modules, 10-bit ADC, and on-chip EEPROM. A microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory, working RAM, and I/O peripherals. The PIC18 K-series belongs to Microchip's nanoWatt XLP product line, an umbrella of ultra-low-power 8-bit MCUs that extend battery life through deep sleep modes drawing under 50 nA. Within the broader taxonomy, the PIC18LF46K22 sits as follows: microcontroller -> embedded controller -> 8-bit MCU -> PIC18 family -> nanoWatt XLP -> PIC18 K-series. Key features include 64 MHz maximum clock speed with 16 MIPS throughput, 35 digital I/O lines, 28-channel 10-bit ADC, 5 CCP/ECCP modules, 2 USART, 2 SPI, 2 I2C, and CTMU for capacitive touch. The 40-UQFN package with exposed thermal pad keeps board footprint compact at 5x5 mm while providing 35 usable I/O through peripheral pin select flexibility. Memory protection, code protection, and a unique device ID support secure firmware deployment. Typical applications include battery-powered IoT sensor nodes, e-metering, energy harvesting devices, wearable health monitors, and portable medical instruments where the LF voltage range and nanoWatt XLP sleep modes are decisive. The 64 KB Flash / 3968 B RAM split is well matched to mid-complexity control loops with small TCP/IP or BLE stacks on RTOS or cooperative schedulers. Design consideration: the exposed pad of the UQFN-40 must be soldered to a grounded copper pour for thermal dissipation and for mechanical reliability; omitting this degrades I/O count and reliability. Always verify the specific voltage range - LF (1.8-3.6V) versus F (2.3-5.5V) - when migrating between the F and LF variants of the same die. This page synthesizes distributor pricing, same-package drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone, giving engineers a single reference for sourcing and replacement decisions on the PIC18LF46K22 family.

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PIC18LF46K40-E/MV - 64KB Flash 8-bit MCU | Microchip | UQFN-40
PIC18LF46K40-E/MV

PIC18LF46K40-E/MV - 64KB Flash 8-bit MCU | Microchip | UQFN-40

The Microchip Technology PIC18LF46K40-E/MV is a low-power, high-performance 8-bit PIC microcontroller with 64KB Flash, 4KB RAM and 256B EEPROM, housed in a 40-pin UQFN (MV) 5x5mm package with exposed thermal pad. It operates up to 64MHz, supports 1.8V to 3.6V supply, and integrates a 10-bit ADC with Computation (ADCC), 5-bit DAC, comparators, PWM, CCP, CWG, HLT, WWDT, SCAN/CRC and ZCD peripherals. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, non-volatile program memory (Flash), volatile data memory (RAM), EEPROM for non-volatile data storage, and a rich set of on-chip peripherals (ADCs, timers, communication interfaces, PWM, etc.) into a single IC. In the system hierarchy, an MCU sits between a simple microcontroller and a microprocessor, combining programmability, deterministic real-time response, and low power consumption. PIC18F microcontrollers are part of Microchip's mainstream 8-bit family, with the LF variant denoting an extended low-voltage operating range (1.8V to 3.6V) suited to battery-powered designs. Key differentiating features include eXtreme Low-Power (XLP) technology with nanoWatt XLP sleep currents as low as 50 nA typical, Core Independent Peripherals (CIPs) such as the Configurable Logic Cell (CLC), Complementary Waveform Generator (CWG), Zero-Cross Detect (ZCD), and 10-bit ADC with Computation (ADCC) that automates Capacitive Voltage Divider (CVD) for advanced touch sensing. The 10-bit ADC supports up to 35 channels on 40-pin parts, enabling direct sensor interfacing without external analog components. On the architecture side, the device uses an enhanced PIC RISC Harvard-bus core with 16-bit instructions and an 8-bit data path, providing deterministic instruction timing and up to 16 MIPS throughput at 64MHz. Internal oscillators, a wide operating voltage range and integrated voltage reference simplify BOM, while the Peripheral Pin Select (PPS) system allows flexible function-to-pin remapping, reducing PCB layout constraints. The combination of large memory, CIPs, and PPS is engineered for reduced system cost and BOM count. Typical applications include low-power IoT sensor nodes, capacitive touch user interfaces, battery-powered home automation, automotive body and lighting control modules (the -E suffix denotes the -40C to +125C extended temperature grade), industrial control panels, and consumer appliances where a low pin count yet feature-rich MCU is needed. When designing with this part, note that the 40-pin UQFN requires careful PCB layout and a thermal pad soldered to the ground plane for thermal dissipation. The -E suffix designates the extended temperature grade (-40C to +125C); the -I grade is industrial (-40C to +85C). The PPS system should be configured early in firmware to lock pin assignments before any peripheral code is written. This page synthesizes real-time distributor pricing, Microchip's official datasheet, parametric alternatives and practical design notes not found in any single distributor listing, providing a consolidated engineering reference for the PIC18LF46K40-E/MV.

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PIC18LF46K40-E/P - 8-Bit 64MHz 64KB Flash MCU | Microchip
PIC18LF46K40-E/P

PIC18LF46K40-E/P - 8-Bit 64MHz 64KB Flash MCU | Microchip

The Microchip Technology PIC18LF46K40-E/P is an 8-bit PIC18 microcontroller featuring a 64 MHz CPU, 64 KB of Flash program memory, 4 KB of SRAM, and 256 B of EEPROM, packaged in a 40-pin PDIP through-hole format. It belongs to Microchip's PIC18 "K40" family and integrates XLP (eXtreme Low Power) technology, Core Independent Peripherals (CIPs), and a 10-bit ADC with Computation (ADCC) that automates Capacitive Voltage Divider (CVD) for advanced touch sensing. A microcontroller (MCU) is a single-chip computer containing a CPU, memory, and programmable peripherals, used to control embedded systems. Within the broader taxonomy, an 8-bit MCU occupies the entry-level performance tier, balancing cost-effectiveness with deterministic real-time control. The PIC18 family specifically targets applications requiring higher memory and richer analog integration than baseline PIC16 devices. Key features of this device include a 10-bit ADCC with up to 35 channels, a 5-bit DAC, two comparators, a 10-bit PWM, CCP, CWG (Complementary Waveform Generator), WWDT (Windowed Watchdog Timer), SCAN/CRC, Zero-Cross Detect (ZCD), Peripheral Pin Select (PPS), and EUSART plus SPI/I2C communication. The "LF" prefix denotes the 1.8V-3.6V low-voltage variant designed for battery-powered applications. Architecturally, the PIC18LF46K40 employs a modified Harvard RISC core with a hardware multiplier, 49 instruction set extensions, and an interrupt controller with hardware context save. The XLP technology delivers sub-uA sleep currents, enabling years of operation from coin-cell batteries. The device also supports on-chip debugging via ICSP and ICD. Typical applications include consumer electronics, IoT sensor nodes, home appliances, capacitive touch user interfaces, battery-powered instrumentation, automotive body electronics, industrial control modules, and low-power remote controls. The wide operating temperature range suits both indoor and harsh-environment deployments. Designers should note the 40-pin PDIP footprint enables easy breadboarding and through-hole prototyping, while the same silicon die is available in TQFP-44 and QFN packages for space-constrained production designs. The 1.8V minimum Vdd allows direct connection to single-cell lithium or two-AA battery stacks. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found on a single manufacturer page, providing engineers with a single reference for sourcing, comparing, and selecting compatible microcontrollers.

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PIC18LF46K40-E/PT - 8-bit 64MHz MCU 64KB Flash | Microchip
PIC18LF46K40-E/PT

PIC18LF46K40-E/PT - 8-bit 64MHz MCU 64KB Flash | Microchip

The Microchip PIC18LF46K40-E/PT is a low-power 8-bit PIC18 microcontroller from the XLP (eXtreme Low Power) family, delivering 64 MIPS performance at 64 MHz with 64 KB Flash, 3728 bytes RAM, and 1024 bytes EEPROM in a 44-pin TQFP (PT) package. The integrated rich peripheral set includes a 10-bit ADC with Computation (ADC2), 5-bit DAC, comparators, CCP/PWM, Complementary Waveform Generator (CWG), Hardware Limit Timer (HLT), Windowed Watchdog Timer (WWDT), Memory Scan/CRC, Zero-Cross Detect (ZCD), and Peripheral Pin Select (PPS). An 8-bit microcontroller is a single-chip computer built around an 8-bit data path, ALU and register file. It belongs to the broader MCU (microcontroller) taxonomy: 8-bit MCU -> PIC18 -> 8-bit PIC microcontroller family -> general-purpose embedded controller -> semiconductor. PIC18F devices use a 16-bit instruction word with Harvard architecture, combining deterministic interrupt response with rich peripheral integration in low-cost silicon. The PIC18LF46K40E/PT operates from 1.8 V to 3.6 V (the F-variant operates up to 5.5 V), integrates nanoWatt XLP technology for sleep currents below 50 nA typical, and supports Core Independent Peripherals that operate without CPU intervention. The integrated Peripheral Pin Select (PPS) gives designers flexible I/O mapping to reduce PCB layout constraints. Typical applications include IoT sensor nodes, low-power battery-operated consumer products, industrial control panels, and low-cost motor control. The combination of CWG + PWM + zero-cross detect is particularly well suited to capacitive-touch user interfaces. CRC/SCAN hardware improves functional safety in IEC 60730 class B appliance designs. When designing with this part, budget Vdd decoupling (100 nF + 1 µF) close to all supply pins and respect in-circuit serial programming (ICSP) pin requirements. The ADC2 module needs acquisition time tuning per source impedance, and the PPS mapping must be locked before enabling peripherals to avoid glitched outputs.

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PIC18LF46K40-I/MV - 8-bit 64MHz 64KB Flash MCU 40-UQFN | Microchip
PIC18LF46K40-I/MV

PIC18LF46K40-I/MV - 8-bit 64MHz 64KB Flash MCU 40-UQFN | Microchip

The Microchip Technology PIC18LF46K40-I/MV is an 8-bit PIC microcontroller from the PIC18 XLP family with 64 KB Flash, 3728 bytes RAM, 1024 bytes EEPROM, and a 64 MHz core, housed in a 40-pin 5x5 mm UQFN (MV) package. The "LF" prefix denotes the low-voltage variant operating from 1.8 V to 3.6 V, while the "F" sibling PIC18F46K40 operates up to 5.5 V. An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit data bus that fetches, decodes, and executes instructions from on-chip program memory. The PIC18LF46K40 belongs to the broader category of microcontroller -> embedded controller -> semiconductor IC, and within Microchip's portfolio it sits in the PIC18 advanced-performance family that combines C-compiler friendly architecture with rich on-chip peripherals. XLP (eXtreme Low Power) technology extends battery life through nanoWatt sleep modes that drop quiescent current below 100 nA in deep sleep. Key features include a 10-bit ADC with Computation (ADCC) supporting automated Capacitive Voltage Divider (CVD) touch sensing, a 5-bit DAC, multiple Core Independent Peripherals (CIPs) such as Complementary Waveform Generator (CWG), Windowed Watchdog Timer (WWDT), CRC/SCAN, Zero-Cross Detect (ZCD), and Hardware Limit Timer (HLT). The device also integrates EUSART, I2C, SPI, CCP, and PWM peripherals, and supports 10-bit PWM with up to 35 mA per I/O source/sink capability. The architecture uses a 16-bit instruction word with an 8-bit data path, an 8-deep hardware stack, and a Harvard bus topology. The instruction pipeline is two stages, and the core delivers up to 16 MIPS at 64 MHz. CIPs offload timing-critical tasks from the CPU, leaving the core free for application logic and reducing firmware complexity. Typical applications include low-power IoT sensor nodes, capacitive touch human-machine interfaces (HMIs), battery-powered consumer electronics, motor-control signal generators using the CWG, and home appliances. The wide peripheral set lets a single chip replace external ADCs, op-amps, and timers. When designing with this part, remember that the UQFN-40 package requires careful PCB land-pattern design and thermal vias under the exposed pad to dissipate ~1 W typical dissipation. The MV suffix indicates the UQFN package; the same silicon is also offered in 40-pin PDIP (P) and 44-pin TQFP (PT) for breadboard-friendly or higher-power designs. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not aggregated on any single distributor or manufacturer page.

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PIC18LF46K40-I/PT - 8-bit 64MHz 64KB Flash MCU | Microchip
PIC18LF46K40-I/PT

PIC18LF46K40-I/PT - 8-bit 64MHz 64KB Flash MCU | Microchip

The Microchip PIC18LF46K40-I/PT is an 8-bit PIC microcontroller from the PIC18 XLP family, delivering 64 MHz CPU performance with 64 KB Flash, 3728 bytes RAM, and 1024 bytes EEPROM in a 44-pin TQFP (10x10 mm) package. The LF variant operates over a 1.8V to 3.6V supply range, making it suited to battery-powered and energy-harvesting applications where extended run-time is required. The integrated Core Independent Peripherals (CIPs) include CWG, WWDT, CRC/SCAN, ZCD, 10-bit ADC2 with Computation, 5-bit DAC, comparators, CCP, 16-bit PWM, and HLT, enabling designers to offload tasks from the CPU and reduce firmware complexity. What is an 8-bit PIC microcontroller? An 8-bit microcontroller is a single-chip computer with an 8-bit data path that executes instructions on one byte at a time. The PIC18 architecture from Microchip is a RISC (Reduced Instruction Set Computer) family that combines ease of programming, deterministic timing, and rich on-chip peripherals. Within the broader semiconductor hierarchy, microcontrollers sit alongside microprocessors as the building blocks of embedded systems; the PIC18 LF sub-family emphasizes eXtreme Low Power (XLP) operation, ideal for always-on IoT endpoints, sensor hubs, and portable medical devices where battery life dominates the BOM. Key features include 36 digital I/O lines, 9 timers, 2 CCP modules, a 35-channel 10-bit ADC, multiple communication interfaces (I2C, SPI, UART with LIN support), and nanoWatt XLP technology with idle currents in the nanoampere range. The device supports both internal and external oscillator modes, in-circuit debugging via ICD, and operation across -40C to +85C industrial temperature range. Hardware CRC/SCAN and Windowed Watchdog Timer (WWDT) provide functional safety primitives for IEC 60730-class white-goods and consumer safety applications. From an architectural standpoint, the PIC18LF46K40 uses a 16-bit instruction word with an 8-bit data path, allowing a 64 KB program memory address space with single-cycle Flash access at 64 MHz. The Core Independent Peripherals can chain deterministically (e.g., ADC-triggered PWM via CWG), removing jitter from software-driven loops. This is particularly valuable for motor control and power conversion, where timing jitter translates to audible noise or EMI. Typical applications include low-power IoT sensor nodes, home appliances with touch and motor control, battery-powered medical monitors, industrial sensor hubs, and automotive body electronics (non-safety). Designers leverage the XLP sleep modes, peripheral pin select, and zero-cross detect to reduce BOM cost by eliminating external analog components. This PIC18LF46K40 variant targets designs that need the 44-pin TQFP footprint for roomy PCB layouts or for upgrade compatibility with larger pin-count PIC18LF45K40 designs. For optimal results, follow the Microchip MPLAB X IDE configuration bits and use the MPLAB Code Configurator (MCC) to scaffold peripheral initialization. When migrating from PIC18LF45K40, verify that CCP and PWM mapping remain consistent with your PCB layout. Designers should always consult the Microchip PIC18(L)F26/45/46K40 datasheet for absolute maximum ratings and DC characteristics specific to the LF low-voltage variant. This page synthesizes verified distributor pricing, same-family drop-in alternatives, and practical design notes beyond what is found in the manufacturer datasheet.

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PIC18LF46K42-E/ML - 8-bit 64MHz 64KB Flash XLP MCU 44-QFN
PIC18LF46K42-E/ML

PIC18LF46K42-E/ML - 8-bit 64MHz 64KB Flash XLP MCU 44-QFN

The Microchip Technology PIC18LF46K42-E/ML is an 8-bit PIC18 RISC microcontroller with 64 MHz maximum clock, 64 KB Flash, 4 KB RAM and 1024 bytes of data EEPROM, housed in a 44-pin QFN (8x8 mm) package with exposed pad. The 'LF' prefix indicates the low-power (1.8V-3.6V) core variant built on Microchip's eXtreme Low Power (XLP) technology platform. The -E suffix designates the extended (-40C to +125C) operating temperature grade. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash), data memory (RAM), non-volatile storage (EEPROM) and a rich set of peripherals such as timers, ADC, communication interfaces and I/O. Within the embedded hierarchy, the PIC18 family sits above PIC16 and below PIC32 in Microchip's 8-bit/16-bit/32-bit taxonomy, targeting mainstream low-power applications where deterministic interrupt response and ultra-low standby current matter more than raw compute throughput. The PIC18LF46K42 differentiates itself through a 12-bit ADC with Computation (ADC2) supporting up to 140 ksps and 35 external channels, hardware Capacitive Voltage Divider (CVD) for touch sensing, a Vectored Interrupt Controller with fixed latency, and DMA. Five 16-bit timers, multiple PWM modules, I2C/SPI/UART with LIN, and a 5-bit DAC complete the peripheral set. The 44-QFN package exposes 36 general-purpose I/O pins. The PIC18LF46K42 is widely deployed in low-power consumer products, industrial sensor nodes, capacitive touch user interfaces, battery-powered instrumentation, and automotive body/comfort modules where XLP nanoWatt sleep modes extend battery life into the multi-year range. On-chip Core Independent Peripherals (CIPs) like CWG, NCO and SMT allow complex functions without waking the CPU. When designing with this MCU, pay attention to the Vdd/Vss decoupling network - place 100 nF ceramics on every supply pin and a bulk 10 uF near the exposed pad - and tie unused I/O to defined logic levels to minimize current draw in Sleep. The ICSP/PGD/PGC pins must be reserved for in-circuit programming and not used for analog functions.

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PIC18LF46K42-E/MV - 8-Bit 64MHz MCU 64KB Flash 40-UQFN
PIC18LF46K42-E/MV

PIC18LF46K42-E/MV - 8-Bit 64MHz MCU 64KB Flash 40-UQFN

The Microchip Technology PIC18LF46K42-E/MV is an 8-bit PIC18 XLP microcontroller running at up to 64 MHz, equipped with 64 KB of Flash program memory, 4 KB of SRAM, and 1 KB of EEPROM, housed in a 40-pin UQFN (5x5 mm) package with extended (-40C to +125C) operating range. A microcontroller (MCU) is a single-chip computer that integrates a CPU, memory, and programmable peripherals on one die. The PIC18 is a 8-bit RISC-architecture family from Microchip; the LF prefix denotes the low-voltage (1.8 V to 3.6 V) variant, while XLP (eXtreme Low Power) adds nanoWatt sleep modes. The K42 generation introduces Core Independent Peripherals (CIPs), on-chip DMA, and vectored interrupts, representing the evolution from earlier PIC18F K22 / K40 generations in the same category hierarchy: MCU -> microcontroller -> 8-bit microcontroller -> PIC18 -> PIC18 K42. Key features include a 12-bit ADC2 with computation, a 5-bit/8-bit DAC, two comparators with slope compensation, a Complementary Waveform Generator (CWG), 10-bit PWM with multiple time bases, and Peripheral Pin Select (PPS) for flexible signal routing. A Direct Memory Access (DMA) controller transfers data between memory and peripherals without CPU intervention, and a Hardware Limit Timer (HLT), Windowed Watchdog Timer (WWDT), and CRC/SCAN improve functional safety. Typical applications include battery-powered IoT sensor nodes, low-power motor control loops, automotive body and lighting ECUs, USB-C and wireless charging front panels, and human-machine interface (HMI) boards that benefit from 36 user I/O and the integrated peripherals. When designing with this part, ensure Vdd is decoupled with a 100 nF ceramic plus bulk capacitor near the package; the MV UQFN-40 exposed pad must be soldered to a copper pour of at least 25 mm squared to keep junction temperature within spec at full 64 MHz operation. This page synthesizes distributor pricing, pin-compatible drop-in alternatives, and practical design notes - including thermal and DMA caveats - that you will not find in the bare manufacturer datasheet.

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PIC18LF46K42-E/PT - 8-Bit 64MHz MCU, 64KB Flash, 44-TQFP | Microchip
PIC18LF46K42-E/PT

PIC18LF46K42-E/PT - 8-Bit 64MHz MCU, 64KB Flash, 44-TQFP | Microchip

The Microchip Technology PIC18LF46K42-E/PT is an 8-bit PIC18 microcontroller with 64 MHz CPU clock, 64 KB Flash program memory, 4 KB RAM, 256-byte EEPROM, and 36 I/O pins in a 44-pin TQFP (10x10 mm) package. It is the low-voltage member (1.8-3.6V) of the PIC18F/LF46K42 family and is well suited to battery-powered and energy-harvesting designs thanks to the eXtreme Low Power (XLP) technology that delivers nanoWatt sleep currents. The -E suffix denotes the extended temperature grade (-40C to +125C), and /PT is the TQFP package designator. Background: A microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory (Flash), volatile data memory (RAM), EEPROM for persistent data, programmable I/O, and on-chip peripherals such as timers, ADC, communication interfaces, and DMA controllers. The PIC18 family uses an 8-bit modified Harvard RISC core optimized for deterministic execution and low interrupt latency; it sits between PIC16 (smaller 8-bit) and PIC24/dsPIC (16-bit) in Microchip's portfolio. Modern PIC18 K-series devices add Core Independent Peripherals (CIPs) that run without CPU intervention, enabling deterministic real-time behavior. Key features include 12-bit ADC with Computation (ADCC) oversampling, 5-/8-bit DAC, high-speed comparators with DAC reference, DMA controller for CPU-offload data movement, vectored interrupts, Configurable Logic Cell (CLC), Complementary Waveform Generator (CWG), 16-bit PWM, math accelerator, and a windowed watchdog timer. Communication peripherals cover I2C, SPI, UART with LIN-bus, and the 36 I/O pins tolerate 5V inputs even on the 3.3V LF part. Typical applications include industrial sensor nodes, home appliances, low-power IoT endpoints, automotive body and lighting subsystems, consumer HMI, and USB-CDC/HID peripherals. The TQFP-44 footprint is breadboard-friendly and supported by Curiosity Nano (DM182020) and Explorer 8 development boards, with MPLAB X IDE, XC8 compiler, and MPLAB Code Configurator (MCC) for rapid code generation. Design consideration: when migrating to the LF variant (1.8-3.6V) confirm any 5V sensors or signal levels, because LF pins are 5V-tolerant only as inputs; use the F variant (PIC18F46K42) for 5V supply. This page synthesizes drop-in TQFP-44 alternatives, parametric comparisons, and design notes not present on the manufacturer product page.

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PIC18LF46K42-I/ML - 64KB Flash 8-Bit MCU, 64MHz, 44-QFN | Microchip
PIC18LF46K42-I/ML

PIC18LF46K42-I/ML - 64KB Flash 8-Bit MCU, 64MHz, 44-QFN | Microchip

The Microchip Technology PIC18LF46K42-I/ML is a low-power, high-performance 8-bit PIC microcontroller featuring a PIC18 RISC core running up to 64 MHz, with 64 KB of Flash program memory, 4 KB of SRAM, and 1 KB of EEPROM, housed in a 44-pin QFN (8x8 mm) package with industrial -40C to +85C temperature rating. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory (Flash), volatile data memory (RAM), and a rich set of programmable peripherals on a single die. Within the broader hierarchy, MCUs belong to the embedded computing category alongside microprocessors (MPUs) and digital signal controllers (DSCs); the PIC18F family sits in the mid-range performance tier of Microchip's PIC portfolio, above baseline PIC10/12/16 parts and below the dsPIC and 32-bit PIC32 lines. The "LF" prefix denotes the 1.8V-3.6V low-voltage variant of the F-series, optimized for battery-powered designs. Key features of the PIC18LF46K42-I/ML include: a 12-bit ADC2 with up to 35 external channels and hardware Capacitive Voltage Divider (CVD) for touch sensing, two I2C/SPI/UART interfaces, two DMA channels, vector interrupts, multiple PWM modules, comparators and a 5-bit DAC, plus eXLP (XLP) ultra-low-power technology with operation in Sleep. The 44-QFN package provides 36 user I/O pins in an 8x8 mm footprint, enabling compact PCB layouts for space-constrained applications. Technically, the device uses CMOS process technology, supports MIPS-rated instruction throughput (16 MIPS at 64 MHz), and integrates core-independent peripherals (CIPs) that execute logic without CPU intervention. The 12-bit ADC2 features automated post-processing, oversampling, averaging, and threshold comparison, reducing firmware overhead. According to the manufacturer datasheet (DS40001919B), the part supports in-circuit debugging via Microchip's MPLAB ecosystem. Typical applications include IoT sensor nodes, capacitive touch user interfaces, low-power motor control, USB HID bridges with external PHY, battery-powered medical devices, and home automation controllers. The vector interrupt controller and DMA support real-time response without CPU bottleneck. When designing, ensure bypass capacitance of at least 0.1 uF plus bulk capacitance close to the VDD pins, and review the 44-QFN land pattern recommendations in the package outline. For migration from PIC18F46K42 to PIC18LF46K42, note the LF variant's lower VDD range (1.8V-3.6V vs. 2.3V-5.5V). This page synthesizes distributor pricing across 8+ channels, drop-in alternatives within the PIC18 K42 family, and practical design notes not found in the manufacturer datasheet alone.

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PIC18LF46K42-I/P - 64KB Flash 8-bit MCU 64MHz | Microchip
PIC18LF46K42-I/P

PIC18LF46K42-I/P - 64KB Flash 8-bit MCU 64MHz | Microchip

The Microchip Technology PIC18LF46K42-I/P is an 8-bit PIC18 XLP microcontroller featuring 64 KB of Flash program memory, 4 KB of SRAM, 1 KB of EEPROM, and a 64 MHz CPU core, housed in a 40-pin PDIP (0.600", 15.24 mm) through-hole package. It integrates Core Independent Peripherals (CIPs), a 12-bit ADC with computation, on-chip DMA controller, vectored interrupts, and a comprehensive set of communication interfaces including UART, SPI, and I2C. The device operates from 1.8 V to 3.6 V, suitable for low-power and battery-powered designs. A microcontroller (MCU) is an integrated circuit that combines a CPU core, program memory, data memory, and peripheral interfaces on a single silicon die. Within the broader hierarchy, the PIC18LF46K42 belongs to the 8-bit PIC18 family, which sits below 16-bit PIC24/dsPIC and 32-bit PIC32 families, but above simple 8-bit baseline PIC10/12/16 devices in computational performance and feature integration. The "LF" prefix indicates the low-voltage, low-power XLP variant optimized for ultra-low standby current, while "K42" designates the specific sub-family with advanced analog and CIP features. Key differentiating features include the on-chip Direct Memory Access (DMA) controller, which transfers data between memory and peripherals without CPU intervention, reducing software overhead and power consumption. The 12-bit ADC with computation (ADCC) automates averaging, filtering, and threshold comparisons. High-resolution PWM (16-bit), complementary waveforms, and dead-band control simplify digital power and motor control loops. eXtreme Low Power (XLP) technology enables nanoWatt sleep currents, making the part suitable for energy harvesting and IoT edge nodes. Architecturally, the PIC18LF46K42 uses an enhanced Harvard architecture with separate program and data buses, allowing simultaneous instruction fetch and data access. The 64 MHz internal oscillator eliminates the need for external crystals in many designs, while 36 I/O pins support extensive user interfacing. Vectored interrupts and a hardware interrupt controller enable deterministic response times critical for real-time control. Typical applications include IoT sensor nodes, industrial control and automation, home appliances, low-power remote controls, motor control and BLDC drivers, energy harvesting systems, medical instruments, and consumer electronics with USB or capacitive touch interfaces. The combination of XLP technology and CIP-driven peripherals reduces BOM cost and code complexity while extending battery life. When designing with the PIC18LF46K42-I/P, ensure adequate decoupling on VDD with 100 nF ceramic capacitors placed close to the supply pins, and reserve an ICPGCK/ICPDAT header for in-circuit serial programming (ICSP). Verify that the selected operating frequency and active peripherals stay within the device's thermal and supply budget at the chosen VDD. This page synthesizes distributor pricing, drop-in alternatives within the same K42 family, and practical design notes not found in the manufacturer datasheet alone, giving engineers a one-stop reference for component selection and supply-chain decisions.

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PIC18LF46K42-I/PT - 8-Bit 64MHz MCU, 64KB Flash | Microchip
PIC18LF46K42-I/PT

PIC18LF46K42-I/PT - 8-Bit 64MHz MCU, 64KB Flash | Microchip

The Microchip Technology PIC18LF46K42-I/PT is an 8-bit PIC18 microcontroller from the PIC18FxxK42 family, featuring a 64 MHz CPU, 64 KB Flash program memory, 4 KB RAM, and 1 KB EEPROM, housed in a 44-pin TQFP (PT) package operating from 1.8 V to 3.6 V. An 8-bit MCU (microcontroller unit) is a single-chip computer that integrates a CPU, non-volatile program memory (Flash), volatile data memory (RAM), EEPROM, and a rich set of peripherals (ADC, timers, communication interfaces). PIC18 microcontrollers use a RISC-based Harvard architecture and are widely deployed in embedded control, sensor conditioning, and human-machine-interface designs. The PIC18LF46K42-I/PT specifically belongs to the "LF" low-voltage sub-family of the K42 family, optimized for battery-powered and energy-harvesting applications thanks to its eXtreme Low Power (XLP) features. Key features include 64 KB self-programmable Flash, 4 KB SRAM, 1 KB EEPROM, a 12-bit ADC with up to 35 channels, a 5-bit DAC, two op-amps, two comparators, DMA, vector interrupts, Core Independent Peripherals (CIP), and multiple communication interfaces: I2C, SPI, UART with LIN support. The device runs at up to 64 MHz instruction-clock frequency, executes 16-bit instructions in one cycle (16 MIPS peak), and supports 1.8 V to 3.6 V operation across an industrial -40C to +85C temperature range. The architecture integrates a high-performance 8-bit RISC core with a 31-level hardware stack, hardware multiply/divide, and direct memory access (DMA) for autonomous data movement between peripherals and RAM. The 12-bit ADC2 (up to 35 channels) and 5-bit DAC enable mixed-signal designs without external components, while two on-chip op-amps and comparators form complete analog front-ends for sensor signal conditioning. Typical applications include IoT sensor nodes, low-power wireless devices, battery-powered instrumentation, industrial control modules, automotive body electronics, and consumer appliances. The LF voltage range (1.8 V-3.6 V) and XLP features (nanoWatt XLP, IDLE/DOZE modes) make it especially suitable for energy-constrained designs. When designing with this MCU, ensure decoupling follows Microchip's recommended 100 nF + bulk capacitor arrangement near VDD/AVDD pins. Program the configuration bits to match the application oscillator and watchdog requirements, and reserve the unused I/O pins with the UNUSED pin macro to minimize current leakage in deep sleep. This page synthesizes distributor pricing, drop-in TQFP-44 alternatives within the PIC18 K42 family, and practical design notes not found in the manufacturer datasheet alone.

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PIC18LF46K42T-I/MV - 64KB Flash XLP 8-bit MCU | Microchip
PIC18LF46K42T-I/MV

PIC18LF46K42T-I/MV - 64KB Flash XLP 8-bit MCU | Microchip

The Microchip Technology PIC18LF46K42T-I/MV is a low-power 8-bit PIC18 microcontroller with 64 KB of Flash program memory, 4 KB of SRAM, and 1 KB of EEPROM, running at up to 64 MHz in a 40-pin UQFN (MV) 5x5 mm package. It is a member of the PIC18Fxx_K42 family that integrates a 12-bit ADC2 with up to 35 channels, a 5-bit DAC, hardware capacitive touch (CVD), DMA, vector interrupts, and Core Independent Peripherals (CIPs). What is a low-power 8-bit microcontroller? It is a microcontroller class that combines a Harvard-architecture 8-bit CPU, integrated peripherals, and aggressive sleep modes targeted at battery-powered or energy-harvesting embedded designs. Within the broader hierarchy, the PIC18LF46K42 sits as: 8-bit MCU -> PIC18 family -> PIC18Fxx_K42 sub-family -> low-power XLP variant. It typically appears below a 16-bit dsPIC or 32-bit Cortex-M0+ device in cost and complexity, but offers superior code density and interrupt response for straightforward control tasks. Key features include eXtreme Low Power (XLP) technology with sub-uA sleep currents, the ADC2 with automated math and charge-pump operation, DMA for offloading core data movement, peripheral pin select (PPS) for flexible signal routing, and a wide operating voltage range of 1.8 V to 5.5 V (F-version supports down to 2.3 V). The integrated CVD module implements hardware capacitive touch sensing without an external analog front end. The architecture pairs a RISC PIC18 core with separate program and data buses, 31-level hardware stack, vectored interrupts with priority levels, and Direct Memory Access between peripherals and memory, allowing background data movement while the CPU sleeps. This combination delivers deterministic real-time response at modest power budgets. Typical applications include IoT sensor nodes, home appliances and white goods, capacitive touch human-machine interfaces, battery-powered handheld instruments, automotive body electronics (non-safety), and low-cost industrial control modules. The MV suffix denotes the tape-and-reel UQFN-40 5x5 mm package. When designing with the PIC18LF46K42T-I/MV, verify PPS assignments early because each peripheral function must be mapped to a physical pin via software registers; mistakes here are a common source of bring-up failures. Also confirm the 1.8 V minimum for the LF variant - applying 1.8 V to the F-variant PIC18F46K42 will fail to start. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes that are not found in the manufacturer datasheet alone.

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