Integrated Circuits

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Products (39,000+)

PIC18LF44K22T-I/MV - 16KB Flash XLP MCU, 40-UQFN | Microchip
PIC18LF44K22T-I/MV

PIC18LF44K22T-I/MV - 16KB Flash XLP MCU, 40-UQFN | Microchip

The Microchip Technology PIC18LF44K22T-I/MV is an 8-bit PIC18LF microcontroller featuring 16 KB (8K x 16) of Flash program memory and 768 bytes of SRAM, housed in a 40-pin Ultra-QFN (UQFN) 5x5 mm exposed-pad package. Operating at up to 64 MHz (16 MIPS) from a 1.8V to 3.6V supply, the LF (low-voltage) variant supports nanoWatt XLP (eXtreme Low Power) technology for ultra-low sleep current consumption, 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, integrating a CPU core, Flash program memory, SRAM, EEPROM, and peripheral set on a single silicon die. Within the broader taxonomy, an MCU belongs to the family of microcontrollers -> microcomputers -> embedded processors -> semiconductors. The PIC18F/K family sits at the upper end of Microchip's 8-bit portfolio, distinguished by its 16-bit instruction word, hardware multiplier, and C-compiler-friendly architecture that bridges classical 8-bit simplicity with 16-bit computational capability. Key features of the PIC18LF44K22 include 256 bytes of EEPROM, 36 digital I/O pins, a 10-channel 10-bit ADC, two analog comparators, hardware PWM, two MSSP (SPI/I2C) ports, two EUSART (LIN-capable) ports, an mTouch capacitive touch peripheral, and CTMU charge-time measurement. The 64 MHz internal oscillator eliminates the need for an external crystal in many designs, reducing BOM cost. The device also integrates a Charge Time Measurement Unit (CTMU) for capacitive touch sensing. Typical applications include low-power IoT sensor nodes, battery-powered handheld instruments, automotive body and HVAC control modules (with AEC-Q100 variants available separately), white goods and appliance user interfaces, and industrial sensor transmitters. The nanoWatt XLP technology typically achieves sub-100 nA sleep currents, enabling multi-year battery life on a single coin cell. When designing with this device, ensure the exposed pad (EP) is soldered to a sufficient copper pour for thermal dissipation. Configure the Configuration Words correctly to enable the internal oscillator and disable unused peripherals to minimize active current. Programming is supported via ICSP using MPLAB X IDE and any PICkit, ICD, or MPLAB Snap debugger. This page synthesizes distributor pricing (LCSC list price from $0.9286), drop-in alternatives within the same 40-UQFN family, and practical design notes not found in the manufacturer datasheet.

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PIC18LF44K22T-I/PT - 16KB Flash XLP 8-bit MCU, 44-TQFP | Microchip
PIC18LF44K22T-I/PT

PIC18LF44K22T-I/PT - 16KB Flash XLP 8-bit MCU, 44-TQFP | Microchip

The Microchip Technology PIC18LF44K22T-I/PT is an 8-bit PIC18 RISC microcontroller with 16 KB Flash, 768 bytes SRAM, and 256 bytes EEPROM, running up to 64 MHz (16 MIPS) from a 1.8V-3.6V supply, housed in a 44-pin TQFP (PT) package with nanoWatt XLP extreme-low-power technology. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory, volatile data RAM, EEPROM, and programmable peripherals on one die. Within the broader taxonomy, PIC18 sits between the baseline PIC10/12/16 family and the 16-bit dsPIC/PIC24 family, targeting applications that need more code space, more peripherals, and C-friendly architecture than entry-level 8-bit parts, while still avoiding the cost and complexity of 32-bit ARM Cortex-M cores. The 'LF' prefix denotes the low-voltage Flash variant designed to operate down to 1.8V, distinguishing it from the 5V-tolerant 'F' parts. Key features include 16 KB self-programmable Flash with 10,000 erase/write cycles endurance, 768 bytes SRAM, 256 bytes EEPROM with 1,000,000 erase/write cycles, 36 digital I/O pins, two Enhanced USART modules, two MSSP (SPI/I2C) modules, two 10-bit ADC modules with up to 28 channels, two 10-bit DAC modules, three 16-bit timers, four 8-bit timers, and an 8-bit Parallel Slave Port (PSP). The integrated nanoWatt XLP technology delivers sleep currents below 100 nA typical and active currents near 6 mA at full MIPS. Architecturally, the device uses a Harvard-structure 8-bit data path with a 16-bit instruction word, an 8x8 hardware multiply, hardware single-cycle register operations, and priority levels for interrupts. The 64 MHz internal oscillator, software-selectable frequency ranges, and the on-chip 31 kHz low-power oscillator form the flexible clock tree that drives both CPU and peripherals. Typical applications include battery-powered sensor nodes with months-of-life duty cycles, portable consumer devices such as remote controls and health monitors, low-power industrial control peripherals including HVAC nodes and metering, USB/HID human-interface devices when paired with a PIC18F4550-family controller, and automotive body controllers where AEC-Q100 isn't required. The wide peripheral set also suits intelligent sensors and small appliances. When designing with this part, note that XLP sleep currents only hit their lowest spec with the internal low-frequency oscillator and certain peripherals disabled in PMD; the user must program PMD and OSCCON carefully. Watch the Vbor and Vbat behavior if using battery-backup mode, and always reserve the PGM/ICSP2.5 programming clock pin from analog routing. This page synthesizes distributor stock, drop-in alternative MPNs from the same PIC18(L)F4XK22 family, parametric comparison tables, and practical design notes that go beyond a single datasheet cover page.

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PIC18LF4510-I/ML - 8-bit MCU, 32KB Flash, 40MHz | Microchip
PIC18LF4510-I/ML

PIC18LF4510-I/ML - 8-bit MCU, 32KB Flash, 40MHz | Microchip

The Microchip Technology PIC18LF4510-I/ML is an 8-bit PIC18F-series microcontroller IC running at 40 MHz with 32 KB (16K x 16) of Flash program memory, 1536 bytes of RAM, and 36 digital I/O pins, housed in a 44-lead QFN (8x8 mm) exposed-pad package. The "LF" prefix designates the low-voltage F-variant core that operates from 2.0 V to 5.5 V, supporting battery-powered designs and 3.3 V system rails. On-chip peripherals include a 10-bit ADC, multiple CCP/PWM modules, UART/USART, I2C, and SPI interfaces, plus nanoWatt power-management modes, brown-out reset, POR, HLVD, and a watchdog timer. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash), data memory (RAM), and peripheral interfaces. PIC18F microcontrollers use an enhanced Harvard RISC architecture with a modified 16-bit instruction word that allows single-cycle execution for most instructions, placing them in the 8-bit MCU product hierarchy: 8-bit MCU -> microcontroller -> embedded processor -> semiconductor IC. The PIC18F family balances code density, deterministic interrupt latency, and broad peripheral integration, making it a workhorse tier above baseline PIC16 parts and below 16-bit PIC24/dsPIC devices. Key features include the 10-bit A/D converter with up to 13 input channels, nanoWatt sleep/Idle modes that drop quiescent current into the microampere range, an enhanced CCP module for PWM motor drive, and self-programming Flash for bootloader-style field updates. The wide 2.0 V to 5.5 V operating window lets the same firmware and PCB serve battery, 3.3 V logic, and 5 V legacy systems without rework. The PIC18F4510 uses an enhanced Harvard architecture with separate code and data buses, a hardware multiplier, and prioritized interrupts that service ADC, PWM, and communication peripherals with deterministic latency. The 8-level hardware stack and 32 KB of linear Flash support C-compiled firmware up to roughly 16 K instructions, with self-programming under firmware control. Typical applications include industrial control, automotive body and sensor subsystems (LF grade, -40 to +85 °C), consumer white goods and small appliances, low-power remote sensor nodes, and USB-/serial-bridge gateway boards where 36 I/O pins and 10-bit ADC simplify mixed-signal front-end integration. When designing with this part, plan input protection on ADC channels, use the exposed pad as the primary thermal and ground return, and choose decoupling per the MCU's datasheet. Pin 1 orientation, the exposed pad footprint, and 44-QFN land pattern must be respected to avoid assembly defects on reflow. This page consolidates distributor pricing, same-family Microchip drop-in alternatives, package-aware comparisons, and design notes not aggregated on any single vendor listing, giving procurement and design engineers a single decision-ready reference.

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PIC18LF4510-I/P - 8-Bit 40MHz MCU, 32KB Flash | Microchip
PIC18LF4510-I/P

PIC18LF4510-I/P - 8-Bit 40MHz MCU, 32KB Flash | Microchip

The Microchip Technology PIC18LF4510-I/P is an 8-bit PIC18 RISC microcontroller built on nanoWatt technology, delivering up to 40 MHz CPU performance with 32 KB (16K x 16) of in-system programmable Flash program memory, packaged in a 40-pin PDIP through-hole form factor. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash/ROM), data memory (RAM), and a rich set of peripheral interfaces (ADC, timers, UART, I/O ports, PWM, etc.) onto one IC. Within the semiconductor hierarchy, an MCU sits below microprocessor (MPU) and above digital logic ICs; PIC18F-family MCUs specifically target low-power, deterministic embedded control with a Harvard RISC architecture. Key features include 1536 bytes of RAM, 256 bytes of data EEPROM, a 10-bit ADC with up to 13 input channels, multiple capture/compare/PWM modules, two USART ports, an MSSP (SPI/I2C) port, two 8-bit timers and three 16-bit timers, nanoWatt power management, and 36 digital I/O pins on the 40-pin DIP. The part is designed for 2.5V/3.3V/5V operation, providing flexible supply rail support for both portable and line-powered designs. Architecturally, the PIC18LF4510 uses an enhanced 8-bit RISC core with a hardware multiplier, a 31-level deep hardware stack, and instruction-pipelined execution that yields up to 10 MIPS at 40 MHz. Code-compatible across the PIC18 family, it supports both C and assembly development under MPLAB X IDE and MPLAB XC8, with in-circuit debugging via ICD 3 or PICkit 4. The nanoWatt technology adds multiple low-power modes (Run, Idle, and several Sleep variants) selectable in firmware to extend battery life in power-constrained products. Typical applications include industrial control panels, sensor conditioning with on-chip ADC, HVAC thermostats, motor control edge nodes, USB-to-UART bridges, smart energy metering, and automotive body electronics subsystems. The 40-pin PDIP format simplifies breadboard prototyping, legacy field replacements, and through-hole manufacturing for low-to-medium-volume products. When designing with the PIC18LF4510-I/P, note that the -I suffix denotes the industrial temperature grade (-40C to +85C) and the /P package designator specifies the 40-pin PDIP. Decoupling caps of 100 nF plus bulk 10 uF should be placed within a few millimeters of VDD/VSS, and unused I/O pins must be configured as outputs low to minimize current draw in Sleep mode. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the standalone Microchip datasheet, with values verified against DigiKey, Mouser, and Octopart as of 2026-09-28.

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PIC18LF4510T-I/ML - 8-bit MCU, 32KB Flash, 44-QFN | Microchip
PIC18LF4510T-I/ML

PIC18LF4510T-I/ML - 8-bit MCU, 32KB Flash, 44-QFN | Microchip

The Microchip Technology PIC18LF4510T-I/ML is an 8-bit RISC microcontroller from the PIC18F family, featuring 32KB (16K x 16) of Flash program memory, 1536 bytes of RAM, and 256 bytes of EEPROM in a 44-pin QFN (8x8 mm) package with exposed thermal pad. It operates at up to 40 MHz and supports a wide supply voltage range of 2.0V to 5.5V, making it compatible with both 3.3V and 5V system designs. The 'LF' prefix indicates an extended voltage-range variant optimized for low-power applications. An 8-bit PIC microcontroller (MCU) is a Harvard-architecture processor that uses separate program and data buses to execute instructions in a single cycle, typically at speeds up to 40 MIPS. It belongs to the broader category of microcontrollers -> microcontrollers/microprocessors -> integrated circuits -> semiconductors. PIC18F devices are widely used in embedded control applications where deterministic real-time performance, peripheral integration, and ease of programming via MPLAB X IDE are required. Key features include 36 digital I/O pins, a 10-bit ADC with up to 13 channels, multiple communication peripherals (EUSART, MSSP/SPI/I2C), and Capture/Compare/PWM (CCP) modules. The device offers nanoWatt XLP (eXtreme Low Power) technology for battery-powered designs, with deep sleep currents in the microampere range. The industrial temperature range (-40C to +85C) suits it for harsh environment deployment. Architecturally, the PIC18LF4510 uses a modified Harvard core with a hardware multiplier, supporting 8x8 hardware multiplication in a single cycle. The 44-QFN package includes an exposed thermal pad for improved heat dissipation at high MIPS operation. On-board debug is supported via ICSP (In-Circuit Serial Programming) and ICD (In-Circuit Debugger) interfaces. Typical applications include industrial control systems, sensor interfaces, motor control, USB device peripherals, and consumer electronics. The device's automotive-grade peripherals and robust PWM make it well-suited for closed-loop control loops. The 'T' suffix indicates tape and reel packaging for high-volume assembly. When designing with this MCU, ensure proper decoupling with 100nF ceramic capacitors placed close to each power pin and a bulk 10uF capacitor on VDD. The exposed thermal pad must be soldered to the PCB ground plane for optimal thermal and electrical performance. Programming is performed via the ICSP interface using MPLAB X IDE and compatible programmers such as PICkit 3/4 or ICD 3/4. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, giving engineers a complete engineering reference for the PIC18LF4510T-I/ML.

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PIC18LF4510T-I/PT - 8-bit 40MHz 32KB Flash MCU | Microchip TQFP-44
PIC18LF4510T-I/PT

PIC18LF4510T-I/PT - 8-bit 40MHz 32KB Flash MCU | Microchip TQFP-44

The Microchip Technology PIC18LF4510T-I/PT is an 8-bit RISC microcontroller (MCU) from the PIC18F family, featuring 32 KB of Flash program memory (16K x 16), 1536 bytes of RAM, and 36 digital I/O pins. It operates at a maximum clock frequency of 40 MHz and is housed in a 44-pin TQFP (10x10 mm) surface-mount package. This 'LF' variant is the low-voltage part, supporting 2.0V to 5.5V operation, while the non-LF PIC18F4510 supports 4.2V to 5.5V. A PIC microcontroller is a compact, self-contained computer-on-a-chip built around a Harvard-architecture RISC core with on-board Flash, RAM, EEPROM, and a rich set of peripherals (ADC, timers, UART, I2C, SPI, PWM, etc.). Microcontrollers belong to the broader hierarchy: microcontroller -> embedded processor -> semiconductor -> integrated circuit. PIC18F devices sit in Microchip's high-performance 8-bit tier, above the baseline PIC10/12/16 families, and are widely used in cost-sensitive embedded designs where deterministic behavior, low power, and abundant peripheral integration are required. Key features of the PIC18LF4510 include a 10-bit ADC with up to 13 input channels, two 8-bit timers plus three 16-bit timers, two analog comparators, one MSSP (SPI/I2C) and one enhanced USART, an 8/16-bit parallel slave port, and a 10-bit PWM module. The device includes 256 bytes of EEPROM for non-volatile data storage and supports In-Circuit Serial Programming (ICSP) plus In-Circuit Debug (ICD). The PIC18F core delivers 16-bit wide instructions and an 8-bit data path with a hardware multiplier, providing ~10 MIPS peak throughput at 40 MHz. The 'LF' extended voltage range (2.0V-5.5V) enables battery-powered or energy-harvesting applications, while the wide operating temperature range of -40C to +85C suits industrial environments. Internal oscillator options and nanoWatt power management modes reduce quiescent current for sleep scenarios. Typical applications for the PIC18LF4510T-I/PT include industrial control panels, HVAC sensor interfaces, low-power handheld instruments, automotive body modules, and consumer appliances. It is also well-suited to sensor nodes, motor control peripherals, and human-machine interface (HMI) boards where its 36 I/Os and 10-bit ADC cover most mid-complexity analog/digital needs without the cost of a 32-bit MCU. When designing with this part, ensure decoupling capacitors are placed close to VDD/VSS pairs and that the ICSP/ICD pins are accessible on the PCB for firmware updates. The wide 2.0V-5.5V supply range allows direct connection to a single-cell Li-ion pack (with regulator) or a 3.3V regulated rail, simplifying power tree design. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone. As of 2026-09-28, the part is active in Microchip's product line and sourced through 9+ distributors per Octopart.

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PIC18LF4515-I/ML - 8-Bit 40MHz PIC18 MCU 48KB Flash | Microchip
PIC18LF4515-I/ML

PIC18LF4515-I/ML - 8-Bit 40MHz PIC18 MCU 48KB Flash | Microchip

The Microchip Technology PIC18LF4515-I/ML is an 8-bit RISC microcontroller from the PIC18F family, featuring 48 KB (24K x 16) of Flash program memory, 3,968 bytes of data RAM, and 36 I/O pins, operating at up to 40 MHz in a 44-pin QFN (8x8 mm) package with exposed pad. It supports a wide 2.0-3.6V operating voltage range and integrates nanoWatt power-management technology. The part is qualified for the -40C to +85C industrial temperature range, identified by the "I" suffix and the "/ML" QFN package designation. An 8-bit microcontroller (MCU) is a programmable integrated circuit that combines a CPU core, non-volatile program memory, working RAM, and a set of peripherals such as timers, ADC, and communication interfaces on a single die. The PIC18 family sits within Microchip's PIC microcontroller hierarchy (PIC10/12/16/18), belonging to the broader category of RISC microcontrollers in the embedded semiconductor landscape. The "LF" prefix indicates a low-voltage Flash variant, optimized for low-power operation, while the "18" series offers an enhanced 16-bit instruction set and an 8-bit data path. Key features of the PIC18LF4515-I/ML include 48 KB Flash with self-programming support, hardware 8x8 multiplier, C-compiler optimized RISC architecture, 10-bit ADC with multiple channels, multiple USART, MSSP (SPI/I2C) interfaces, and nanoWatt technology for power-conscious designs. The 40 MHz clock rate delivers up to 10 MIPS performance, sufficient for real-time control loops in industrial and consumer applications. The PIC18LF4515 architecture uses a Harvard-style 16-bit instruction/8-bit data bus and includes the standard PIC18 peripheral set. Its Flash memory supports In-Circuit Serial Programming (ICSP) and In-Circuit Debug (ICD), allowing firmware updates and debugging directly in the target system without removing the device. The 44-pin QFN package with exposed thermal pad provides a low-profile footprint while offering good thermal dissipation through PCB copper. Typical applications include industrial control systems, home appliances, automotive body electronics (non-safety), sensor conditioning nodes, USB-class device bridges via MSSP/USART, and low-power remote controls. The combination of 48 KB Flash and 3,968 bytes RAM suits mid-complexity embedded tasks with moderate peripheral requirements. When designing with this part, consider that the -I/ML variant operates only to +85C - for automotive or extended-temperature environments use the -E (extended) or -Q (AEC-Q100) grade. Ensure decoupling capacitors (typically 100 nF plus bulk) are placed close to the VDD/VSS pins and that the exposed pad is soldered to a sufficient copper pour to meet thermal and electrical grounding requirements. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes - including thermal and PCB layout guidance - that go beyond the manufacturer datasheet to give engineers a complete procurement and design reference.

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PIC18LF4515T-I/ML - 8-bit MCU 48KB Flash 40MHz 44-QFN | Microchip
PIC18LF4515T-I/ML

PIC18LF4515T-I/ML - 8-bit MCU 48KB Flash 40MHz 44-QFN | Microchip

The Microchip Technology PIC18LF4515T-I/ML is an 8-bit PIC18 microcontroller running up to 40 MHz with 48 KB of Flash program memory (24K x 16 words) and 3,968 bytes of RAM, housed in a 44-pin QFN (8x8 mm) exposed-pad package. The LF suffix denotes the low-voltage variant operating from 2.0 V to 5.5 V, and the I suffix denotes the industrial temperature range of -40C to +85C. What is a PIC18 microcontroller? PIC18 is Microchip's 8-bit enhanced RISC family within the broader PIC microcontroller lineup, itself a category of single-chip microcontrollers integrating CPU, Flash, RAM, peripherals, and I/O on one die. PIC18F parts add enhanced Flash memory and richer peripherals versus baseline PIC16F parts, and the LF sub-family optimizes core and peripheral logic for low-voltage operation using nanoWatt technology. PIC18 sits at the entry to Microchip's 16-bit dsPIC/PIC24 and 32-bit PIC32 families, covering mid-complexity embedded designs. Key features of the PIC18LF4515T-I/ML include 1,024 bytes of EEPROM, 36 general-purpose I/O pins, a 13-channel 10-bit ADC, three analog comparators, two 8-bit timers plus three 16-bit timers, two capture/compare/PWM modules, two USART modules, one MSSP (master synchronous serial port) supporting both I2C and SPI, and a 10-bit ADC with internal reference options. The 44-QFN package exposes the die ground pad for thermal dissipation, allowing higher-frequency operation in thermally constrained layouts. The PIC18F4515 core uses a 16-bit modified Harvard architecture with an 8-bit data path, 8x8 hardware multiplier, and a hardware divider; the LF variant replaces the F-version's 4.2V-5.5V operating range with a 2.0V-5.5V range suitable for battery and 3.3V systems. nanoWatt technology adds sleep, idle, and oscillator-switching modes for ultra-low standby current, enabling years of operation from a single lithium cell in metering or sensor applications. Typical applications include industrial control panels, single-phase induction motor control (a documented target for this family), home appliances, sensor hubs, USB device stacks (using the USART plus MSSP), instrumentation data loggers, and general-purpose embedded control boards. The wide memory and rich peripheral set also suit automotive body electronics where the I-temperature range is sufficient. When designing with this part, ensure the 44-QFN exposed pad is soldered to a sufficiently large copper pour to meet thermal and electrical requirements; Microchip recommends at least 16 via holes connecting the thermal pad to internal ground planes. For ICE/in-circuit debugging, allocate the dedicated PGC/PGD pins early, and confirm crystal or resonator load capacitance matches the chosen oscillator configuration. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.

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PIC18LF452-I/L - 8-bit PIC MCU, 32KB Flash, 44-PLCC | Microchip
PIC18LF452-I/L

PIC18LF452-I/L - 8-bit PIC MCU, 32KB Flash, 44-PLCC | Microchip

The Microchip Technology PIC18LF452-I/L is an 8-bit RISC microcontroller with 32KB of Flash program memory and 1536 bytes of SRAM, packaged in a 44-pin PLCC (Plastic Leaded Chip Carrier) form factor. It operates from a wide supply range of 2.5V, 3.3V, or 5V and runs the PIC18 instruction set at up to 10 MIPS (40 MHz clock) with only 77 single-word instructions, simplifying firmware development while preserving the throughput needed for embedded control loops. A PIC microcontroller is a Harvard-architecture CMOS RISC device that separates program and data memory buses, allowing simultaneous fetch and access. The PIC18 family is the upper tier of Microchip's 8-bit line, introducing 16-bit opcodes, a hardware multiplier, linear code space, and priority-enabled interrupts. The 'LF' suffix denotes an extended-voltage variant that runs at lower VDD (down to 2.0V), making it the right choice for battery-powered or low-voltage systems where the standard 'F' part would lose regulation. The PIC18LF452 sits in the family hierarchy as: PIC microcontroller -> PIC18 family -> PIC18F452 sub-family -> PIC18LF452 (low-voltage F452). Key features include 32KB (16K x 16) Flash program memory, 1536 bytes of RAM, 256 bytes of EEPROM, 34 digital I/O pins, a 10-bit 8-channel Analog-to-Digital Converter (ADC), two analog comparators, two Capture/Compare/PWM (CCP) modules, an Enhanced Capture/Compare/PWM (ECCP) module, one USART, one MSSP (Master Synchronous Serial Port) for SPI/I2C, two 8-bit timers and three 16-bit timers, a parallel slave port, and an ICD (In-Circuit Debugger) interface. The instruction cycle time of 100 ns (at 40 MHz) gives deterministic timing for motor control and instrumentation loops. Architecturally, the PIC18LF452-I/L uses a 16-bit instruction word and an 8-bit data path with a hardware multiply (8 x 8 in one cycle). The wide 2.5V/3.3V/5V operating range, combined with nanoWatt power-management modes (Sleep, Idle, and peripheral gating), supports low-power sensor and remote-monitoring nodes. The ADC's 10-bit resolution is adequate for thermocouple/thermistor front-ends and basic instrumentation, while the ECCP module delivers the PWM resolution needed for switched-mode power and motor drive. Typical applications include industrial control panels, motor control (DC, stepper, BLDC), HVAC blowers and actuators, automotive body electronics (non-safety), sensor conditioning front-ends, instrument clusters, security panels, and general-purpose embedded control boards. The 44-pin PLCC package supports a through-hole socket for prototyping or field-replaceable designs, which is common in legacy industrial and aerospace instrumentation. When designing with this part, verify the operating voltage range carefully: the 'F' variant operates from 4.2V to 5.5V, while the 'LF' variant runs from 2.0V to 5.5V. Use decoupling on each VDD/VSS pair, place the 20 MHz (or appropriate) resonator within 1 cm of OSC1/OSC2, and route the ICP/ICD signals away from switching nodes to preserve debug-session stability. This page synthesizes distributor stock, parametric comparison, and drop-in alternatives not found in any single manufacturer datasheet - giving engineers a faster cross-reference path than manual datasheet correlation.

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PIC18LF452-I/P - 8-bit 40MHz 32KB Flash MCU | Microchip
PIC18LF452-I/P

PIC18LF452-I/P - 8-bit 40MHz 32KB Flash MCU | Microchip

The Microchip Technology PIC18LF452-I/P is an 8-bit RISC microcontroller from the PIC18F family running up to 40 MHz (10 MIPS) with 32 KB of on-chip Flash program memory (16K x 16), 1.5 KB of data RAM, and 256 bytes of EEPROM, packaged in a 40-pin PDIP through-hole format. The "LF" prefix designates the low-voltage variant with an extended VDD range of 2.0 V to 5.5 V, while the "I" suffix indicates the industrial temperature grade (-40C to +85C). 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 RAM, peripherals (timers, ADC, UART, I/O), and interrupt control on one die. The PIC18F family sits in the PIC16 -> PIC18 -> PIC24/DSPIC hierarchy and is widely used in industrial control, automotive body electronics, instrumentation, and consumer appliances where deterministic timing and ease of development matter more than raw CPU throughput. The PIC18LF452 features a 16-bit instruction word with only 77 single-word instructions and a 16-level hardware stack with hardware/software interrupt priority. Peripherals include a 10-bit ADC with up to 8 channels, two 8-bit and three 16-bit timers, two capture/compare/PWM (CCP) modules, an enhanced CCP module, a master synchronous serial port (MSSP) configurable for SPI or I2C, an enhanced USART with autobaud, a parallel slave port, and a 10-bit ADC with up to 8 channels. It supports In-Circuit Serial Programming (ICSP) via two pins plus clock and data, plus a low-voltage programming option. The architecture is based on Microchip's enhanced Harvard design with separate code and data buses, allowing an instruction fetch and a data access in the same clock cycle. The wide 2.0 V - 5.5 V range allows the device to run from a single Li-ion cell (with regulator), two alkaline cells, or a 5 V regulated rail, simplifying power-tree design in portable and battery-backed products. Typical applications include industrial control panels, HVAC fan and damper controllers, sensor signal conditioning, small appliance control (coffee machines, washing machines, microwave ovens), and battery-powered instrumentation. The wide VDD range and ICSP make it especially attractive for through-hole hobbyist and educational designs where hand-soldering is preferred. Through-hole PDIP remains the package of choice for prototype boards, breadboards, and replacement parts in legacy designs. When designing with this part, note that the LF (low-voltage) revision differs from the PIC18F452 in its minimum VDD: PIC18F452 needs 4.2 V minimum, while PIC18LF452 works down to 2.0 V. Use the LF variant for battery and low-rail designs; use the F variant for 5 V-only systems where you do not need low-voltage operation. Ensure all VDD and VSS pins are connected per datasheet - leaving any power pin open can cause programming or operation failures. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not found in the standalone datasheet.

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PIC18LF452-I/PT - 8-Bit 40MHz 32KB Flash MCU | Microchip
PIC18LF452-I/PT

PIC18LF452-I/PT - 8-Bit 40MHz 32KB Flash MCU | Microchip

The Microchip Technology PIC18LF452-I/PT is a high-performance 8-bit RISC Flash microcontroller IC with 40 MHz maximum clock, 32 KB (16K x 16) of Flash program memory and 1.5 KB of RAM, housed in a 44-pin TQFP (10x10 mm) package. It belongs to the PIC18F family and executes instructions in 100 ns (10 MIPS) while supporting a wide operating voltage range of 2.0 V to 5.5 V, making it suitable for both 3.3 V and 5 V systems. What is a microcontroller (MCU)? A microcontroller is a single-chip computer that integrates a CPU core, non-volatile program memory (Flash/ROM), volatile data memory (RAM), and programmable peripheral I/O into one package. Microcontrollers belong to the broader category of embedded processors -> microcontrollers -> 8-bit microcontrollers -> PIC microcontrollers (Microchip). The PIC18F family specifically delivers enhanced instruction sets, hardware multipliers, and C-friendly architecture while remaining upwardly compatible with older PIC16 and PIC17 devices. Key features of the PIC18LF452-I/PT include 34 digital I/O pins, 8 channels of 10-bit ADC, two 8-bit timers plus three 16-bit timers, a 16-bit capture/compare/PWM (CCP) module and an Enhanced CCP module, two USART modules, a Master Synchronous Serial Port (MSSP) supporting SPI and I2C, and an 8-bit parallel slave port. The device also incorporates a 10-bit ADC with up to 8 inputs, a programmable Brown-out Reset (BOR), and a watchdog timer with its own on-chip RC oscillator for maximum reliability. The architecture is built on a RISC core with 77 single-word instructions, a hardware 8x8 multiplier, and 32 KB of self-programmable Flash that supports In-Circuit Serial Programming (ICSP) and In-Circuit Debug (ICD). Internal oscillator options and four crystal modes provide flexible clocking, while low-power features such as run, idle, and sleep modes plus on-chip power-on reset support battery-friendly designs across industrial, consumer, and automotive (aftermarket) use cases. Typical applications include industrial control boards, motor control (DC brushed, stepper, and small BLDC via PWM), home appliance control panels, sensor interface hubs, USB/HID human-interface devices, low-cost data acquisition front-ends, automotive body and accessory ECUs (where AEC-Q100 is not required), and educational/development platforms where PIC18 software reuse and toolchain maturity are valued. When designing with the PIC18LF452-I/PT, ensure the MCLR pin is properly pulled up and that ICSP programming lines (PGC/PGD) are accessible via header or test points. Use decoupling capacitors of 0.1 uF and 10 uF near VDD/VSS pairs, and provide adequate analog and digital ground separation when using the ADC. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found on the manufacturer datasheet alone, giving engineers a single reference for sourcing, replacement, and PCB bring-up decisions.

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PIC18LF4520-I/ML - 8-Bit 40MHz 32KB Flash MCU | Microchip
PIC18LF4520-I/ML

PIC18LF4520-I/ML - 8-Bit 40MHz 32KB Flash MCU | Microchip

The Microchip Technology PIC18LF4520-I/ML is an 8-bit PIC18-family flash microcontroller running at up to 40 MHz (10 MIPS), integrating 32 KB of Flash program memory, 1536 bytes of SRAM and 256 bytes of EEPROM in a 44-pin QFN (8x8 mm) package with an exposed thermal pad. It provides 36 digital I/O pins, a 10-bit multi-channel ADC, multiple capture/compare/PWM modules, and nanoWatt power-management features for low-power designs. An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit data path, optimized for deterministic real-time control and low BOM cost. Within Microchip's taxonomy, the PIC18F series sits between the baseline PIC10/12/16 8-bit families and the 16-bit PIC24/dsPIC line, targeting mid-complexity embedded applications. The "LF" prefix denotes the extended low-voltage operating range, while the "4520" identifies the specific Flash/RAM/peripheral mix and 40/44-pin pinout. Key features of the PIC18LF4520-I/ML include the nanoWatt technology suite (idle, sleep, and deep-sleep modes with sub-microamp currents), an Enhanced Universal Synchronous/Asynchronous Receiver/Transmitter (EUSART), a Master Synchronous Serial Port (MSSP) supporting SPI and I2C, a 10-bit Analog-to-Digital Converter with up to 13 input channels, and self-programming Flash with ICSP (In-Circuit Serial Programming). The 44-pin QFN (ML suffix) footprint is the same as that of the PIC18F4520-I/ML, providing pin-compatibility across the F and LF variants. The PIC18LF4520 architecture uses a Harvard RISC core with 16-bit instructions and a 16-bit-wide instruction word, providing up to 10 MIPS throughput at 40 MHz. The 32 KB Flash memory (16K × 16) supports 100,000 write/erase cycles typical, while the 256-byte EEPROM supports 1,000,000 cycles typical. Peripherals are routed through a flexible pin-mapping module that allows many functions to be remapped to alternate I/O pins. Typical applications include industrial control panels, sensor signal conditioning, USB-to-serial bridges (using the EUSART with an external transceiver), HVAC controllers, low-power battery-operated instruments, automotive body electronics sub-modules (non-safety), and consumer appliances. The wide 2.0V-5.5V operating range and low-power modes make it well suited for portable and remote-monitoring designs. When designing with this device, allocate a sufficient PCB copper area beneath the QFN exposed pad for thermal dissipation and for ground reference; the exposed pad MUST be soldered to a ground pad on the PCB. Engineers migrating between the PIC18F4520 (5V-only) and PIC18LF4520 should review the analog and oscillator specifications because the LF variant trades some analog performance for wider voltage support. This page combines manufacturer datasheet data, real-time distributor pricing, drop-in QFN-44 alternatives from the same Microchip PIC18 family, and practical design notes to provide a single source of engineering and purchasing information not found in any single manufacturer datasheet.

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PIC18LF4520-I/PT - 8-Bit 40MHz 32KB Flash MCU 44-TQFP | Microchip
PIC18LF4520-I/PT

PIC18LF4520-I/PT - 8-Bit 40MHz 32KB Flash MCU 44-TQFP | Microchip

The Microchip Technology PIC18LF4520-I/PT is an 8-bit RISC microcontroller belonging to the PIC18 enhanced flash family, integrating 32 KB of program flash, 1536 bytes of SRAM, and 256 bytes of EEPROM on a single die. The device executes instructions at a 40 MHz clock rate, delivering up to 10 MIPS of processing throughput from its enhanced PIC18 core, and is housed in a 44-pin TQFP (10x10 mm, PT suffix) package rated for the industrial -40C to +85C temperature range. Key features include 36 digital I/O pins, a 10-bit analog-to-digital converter with up to 13 input channels, four timer modules, two capture/compare/PWM modules, two USART modules, one MSSP (SPI/I2C) peripheral, and a nanoWatt power-managed sleep architecture. The wide 2.0V to 5.5V supply range accommodates both 3.3V and 5V rails, while the LF silicon process variant delivers lower core current draw than the standard F parts at equivalent clock speeds. The PIC18 architecture provides a C-friendly 16-bit instruction word with 8-bit data path, 31-level hardware stack, and interrupt-priority support. The integrated 32 KB self-programmable flash supports In-Circuit Serial Programming (ICSP) and In-Circuit Debugging (ICD), enabling field firmware updates and free MPLAB X IDE development with no toolchain cost. The 256-byte EEPROM and 1536-byte SRAM are sufficient for small embedded datalogging and protocol-handling tasks. Typical applications include industrial sensor interfacing, low-power motor control, USB-to-UART bridges, small-format motor drives, building automation nodes, and consumer appliance control boards. The LF variant's nanoWatt technology is particularly advantageous for battery-powered instruments where sleep-mode current in the microampere range extends operating life. When designing with this device, ensure decoupling on VDD/VSS pins (one 100 nF per supply pin plus a bulk 10 uF), route the ICSP/ICD pins (PGC/PGD) to a programming header for firmware updates, and check the MCLR pull-up network for reliable reset behaviour. For high-EMI environments, add a small series resistor on MCLR and place the crystal within 10 mm of the OSC pins.

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PIC18LF4523-I/ML - 8-bit 40MHz 32KB FLASH MCU | Microchip
PIC18LF4523-I/ML

PIC18LF4523-I/ML - 8-bit 40MHz 32KB FLASH MCU | Microchip

The Microchip Technology PIC18LF4523-I/ML is an 8-bit PIC18F-family microcontroller (MCU) with a 40 MHz CPU core, 32 KB (16K x 16) of FLASH program memory, 1536 bytes of SRAM and 256 bytes of EEPROM, housed in a 44-pin QFN (8x8 mm) package with exposed thermal pad. The "LF" prefix indicates a wide-range low-voltage core that operates from 2.0 V to 5.5 V, and the "-I" suffix designates the industrial temperature grade of -40 °C to +85 °C. A microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory (FLASH/ROM), working RAM, peripherals (timers, ADC, communication ports, PWM, comparators) and interrupt logic on one silicon die. PIC microcontrollers use a RISC (Reduced Instruction Set Computer) architecture with a 16-bit instruction word and 8-bit data path, executing most instructions in one instruction cycle (4 oscillator clocks). The PIC18 family sits between PIC16 mid-range and PIC24 16-bit dsPIC families in Microchip's portfolio, balancing code density, peripheral richness and 5 V analog performance. The PIC18LF4523 belongs to the PIC18F4523 sub-family of general-purpose devices with full-speed USB 2.0 (Full-Speed, 12 Mbps), making it a true "system-on-a-chip" for embedded control. Key differentiating features include 36 digital I/O pins across five ports (RA, RB, RC, RD, RE), a 13-channel 12-bit ADC, two analog comparators, two CCP modules plus one ECCP for enhanced PWM, two UART/USART channels, one SPI and one I2C (MSSP) peripheral, a 16-bit timer/counter and three 8-bit timers, plus an on-chip full-speed USB 2.0 device/host/OTG transceiver. The device also provides 10 MIPS sustained throughput, hardware multiplier, two 8-bit hardware multipliers and a programmable brown-out reset (BOR) and low-voltage detect (LVD). The PIC18LF4523 uses an enhanced Harvard architecture with separate program and data buses, a hardware 8x8 single-cycle multiplier, and Microchip's nanoWatt Technology dynamic power management. Self-programmability of the FLASH via ICSP (In-Circuit Serial Programming) and runtime by the user firmware is supported, enabling bootloader-based field upgrades. The USB SIE is fully on-chip, eliminating an external PHY and reducing BOM cost for HID, CDC, vendor-class and mouse/keyboard applications. Typical applications include USB peripherals (HID mice, keyboards, custom HID controllers, USB-to-serial bridges), industrial control panels (sensor interfaces, motor drive logic, Modbus gateways), home appliances (washing machines, microwave ovens, induction cookers, HVAC controllers), automotive interior subsystems (instrument clusters, climate control, lighting) and low-power data loggers with USB connectivity. The wide 2.0 V to 5.5 V range also lets it run directly from a single Li-ion cell or from a 3.3 V regulated rail. When designing with this device, route the exposed thermal pad (EP) of the QFN-44 to a continuous ground plane with multiple thermal vias, because the EP is the primary heat-dissipation path. Keep the USB D+/D- traces length-matched within 150 mil and keep them away from switching nodes such as PWM outputs to preserve USB signal integrity. Decouple VDD/VSS with a 100 nF X7R placed within 3 mm of each power pin, and place the 4.7 uF bulk capacitor adjacent to the QFN package. This page synthesizes distributor pricing (DigiKey, Mouser, Octopart), pin-compatible 44-QFN drop-in alternatives, and practical USB layout and thermal notes that go beyond the manufacturer datasheet summary.

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PIC18LF4523-I/P - 8-bit 40MHz 32KB Flash MCU | Microchip | DIP-40
PIC18LF4523-I/P

PIC18LF4523-I/P - 8-bit 40MHz 32KB Flash MCU | Microchip | DIP-40

The Microchip Technology PIC18LF4523-I/P is an 8-bit PIC18 family microcontroller delivering 40 MHz CPU performance with 32 KB (16K x 16) of on-chip Flash program memory in a 40-pin PDIP (0.600", 15.24 mm) through-hole package. It is part of the low-voltage "LF" variant, supporting a 2.0 V to 5.5 V VDD operating range suitable for both battery-powered and 5 V designs. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, RAM, Flash program memory, and peripherals such as timers, ADC, and communication interfaces onto one silicon die. Within the Microchip hierarchy, the PIC18F/LF family sits above the PIC16 baseline and enhanced cores and below the PIC24/dsPIC 16-bit families, providing a balance of processing throughput, peripheral richness, and code density that has made it the workhorse of industrial embedded designs. Key features of the PIC18LF4523-I/P include 32 KB Flash, 1536 bytes of RAM, 256 bytes of EEPROM, a 12-channel 10-bit ADC, two analog comparators, four 16-bit timers, two capture/compare/PWM (ECCP) modules, MSSP (SPI/I2C), enhanced USART, and two comparators with a reference. The 36 digital I/O pins are 5 V tolerant on the digital inputs when VDD is present, supporting direct interfacing to legacy 5 V logic. The RISC architecture delivers 10 MIPS at 40 MHz, with a hardware multiplier and C-friendly instruction set. Typical applications include industrial control panels, sensor signal conditioning front-ends, motor-drive companion controllers, USB-to-UART bridges (via MSSP + USART), HVAC thermostats, low-cost instrumentation, and educational/development boards. The wide 2.0-5.5 V operating range allows the same firmware to run from a Li-ion cell or a regulated 5 V rail. When laying out a board, provide at least 100 nF decoupling on each VDD/AVDD pair close to the pins, route the 40 MHz crystal traces symmetrically with a guard ring, and reserve MCLR with a 10 kohm pull-up plus an inline resistor for in-circuit serial programming (ICSP). This page synthesizes distributor pricing, drop-in alternative MPNs, and practical design notes not found in the manufacturer datasheet alone, helping engineers select and qualify the PIC18LF4523-I/P for new designs and legacy maintenance.

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PIC18LF4523-I/PT - 8-bit 40MHz 32KB FLASH MCU | Microchip
PIC18LF4523-I/PT

PIC18LF4523-I/PT - 8-bit 40MHz 32KB FLASH MCU | Microchip

The Microchip Technology PIC18LF4523-I/PT is an 8-bit RISC microcontroller from the PIC18F family, featuring a 40 MHz PIC18 CPU core with 32 KB (16K x 16) of FLASH program memory, 1536 bytes of RAM, and 256 bytes of EEPROM, housed in a 44-pin TQFP (10x10 mm) package. It integrates a 13-channel, 12-bit ADC, 36 digital I/O pins, and an enhanced instruction set with hardware multiply support, making it a versatile general-purpose MCU for embedded control. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, RAM, non-volatile program memory, and peripherals on one silicon die. The PIC18F family uses a modified Harvard architecture with separate program and data buses, allowing simultaneous fetch and access of instructions and operands. The PIC18LF4523 is the low-voltage ('LF') variant of the PIC18F4523 and supports a wide supply range from 2.0 V (at reduced speed) up to 5.5 V, making it well-suited for both 3.3 V and 5 V designs. Key features of this part include 32 KB self-programmable FLASH, an 8 MIPS instruction throughput at 40 MHz, 10-bit A/D with 13 channels, four timer modules (Timer0/1/2/3), two capture/compare/PWM modules, an Enhanced USART, MSSP for SPI/I2C, and dual analog comparators. The on-chip 12-bit ADC is one of the highest resolutions offered in the PIC18 family and is suitable for sensor signal acquisition. The architecture includes a priority-based interrupt controller, a hardware 8 x 8 multiplier, and a 31-level hardware stack. The LF suffix indicates an extended VDD range of 2.0 V to 5.5 V, while the 'F' (FLASH) family supports ICSP (In-Circuit Serial Programming) for in-field firmware updates, simplifying manufacturing and field servicing. Typical applications include industrial control, HVAC, home appliance control panels, automotive body electronics, sensor signal conditioning, low-power remote sensing nodes, and USB/HID class peripherals. The 36 available I/O pins and large memory make it a strong fit for human-machine interface (HMI) panels and motor control supervisory logic. The wide operating temperature range of -40 C to +85 C supports industrial and outdoor environments. When designing with the PIC18LF4523-I/PT, observe decoupling by placing a 100 nF ceramic capacitor as close as possible to VDD/AVDD/VSS/AVSS pairs, and provide a bulk 10 uF capacitor near the regulator. Configure the MCLR pin with a 10 kohm pull-up and place the ICSP connector away from high-noise switching traces. Always consult the device errata sheet during firmware development. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone, providing engineers with a single decision-ready reference for PIC18LF4523-I/PT selection.

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PIC18LF4523T-I/ML - 8-bit MCU, 32KB Flash, 1536B RAM, 44-QFN | Microchip
PIC18LF4523T-I/ML

PIC18LF4523T-I/ML - 8-bit MCU, 32KB Flash, 1536B RAM, 44-QFN | Microchip

The Microchip Technology PIC18LF4523T-I/ML is an 8-bit RISC microcontroller belonging to the PIC18F family, featuring 32KB of Flash program memory, 1536 bytes of SRAM, and a 256-byte EEPROM, all packaged in a 44-pin QFN (8x8 mm). It operates at up to 40 MHz, delivering approximately 10 MIPS of throughput, and is offered in the "LF" low-voltage variant supporting 2.0V to 5.5V operation versus the standard F-variant's 4.2V to 5.5V range. The "T" suffix denotes tape-and-reel packaging, the "I" indicates an industrial temperature grade of -40°C to +85°C, and the "ML" suffix specifies the 44-QFN package. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash/ROM), working memory (RAM), and a rich set of peripherals such as timers, communication interfaces, and analog-to-digital converters. Within the broader taxonomy, an MCU belongs to embedded controllers, which sit under microprocessors and semiconductors. The PIC18 family uses a modified Harvard RISC architecture with a 16-bit instruction word and 8-bit data path, optimized for deterministic interrupt response and low-power operation through the nanoWatt technology feature set. Key features of the PIC18LF4523 include a 10-bit ADC with up to 13 input channels, two enhanced USART modules, a Master Synchronous Serial Port (MSSP) configurable for SPI or I²C, two Capture/Compare/PWM (CCP) modules plus an enhanced ECCP, two 8-bit timers and three 16-bit timers, a parallel slave port, and 36 general-purpose I/O pins. The nanoWatt features include multiple idle modes, sleep mode with <100 nA typical current, and a fast wake-up peripheral architecture for battery-powered designs. The device is engineered around Microchip's PIC18 enhanced core, which provides hardware multiplier support, 31-level hardware stack, and a single-cycle instruction prefetch. The QFN-44 package exposes the full peripheral set while keeping board footprint compact, ideal for space-constrained industrial and consumer designs. Typical applications include industrial control, IoT edge nodes, embedded automation, motor control, smart metering, low-power board designs, and human-machine interface (HMI) panels. The wide 2.0V-5.5V supply range and low-power nanoWatt modes make it especially well-suited for battery-backed sensor and metering products. When designing with this part, ensure the input voltage stays within 2.0V to 5.5V; for systems above 5.5V use the F-variant instead. Always de-couple VDD/VSS with 100 nF ceramics placed within 5 mm of each pin pair, and respect the In-Circuit Serial Programming (ICSP) pin assignments when laying out the PCB. This page synthesizes distributor pricing, drop-in tape-and-reel/packaging alternatives, and practical design notes not found in the manufacturer datasheet, giving procurement and design engineers a single-page reference for the PIC18LF4523T-I/ML.

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PIC18LF4523T-I/PT - 32KB Flash 8-bit MCU, 40MHz, 44-TQFP | Microchip
PIC18LF4523T-I/PT

PIC18LF4523T-I/PT - 32KB Flash 8-bit MCU, 40MHz, 44-TQFP | Microchip

The Microchip Technology PIC18LF4523T-I/PT is an 8-bit RISC microcontroller from the PIC18F family featuring 32KB (16K x 16) of Flash program memory, 1536 bytes of RAM, and 256 bytes of EEPROM, housed in a 44-pin TQFP (10x10 mm) package. It operates up to 40MHz instruction throughput and supports a wide 2.0V to 5.5V supply range optimized for low-power nanoWatt technology designs. A PIC18 microcontroller (MCU) is a 8-bit Harvard-architecture RISC device built around an enhanced PIC18 CPU core with hardware multiplier, designed for embedded control applications requiring deterministic interrupt response and rich peripheral integration. PIC MCUs sit within the broader taxonomy: microcontroller -> embedded processor -> semiconductor IC, and are widely used in industrial, automotive, and consumer applications where low cost and robust peripherals matter more than raw computational throughput. Key features include 36 digital I/O pins, a 10-bit ADC with up to 13 input channels, multiple communication peripherals (EUSART, MSSP for SPI/I2C), four 16-bit timers, and nanoWatt power management with multiple idle and sleep modes. The 44-TQFP package exposes a wide set of analog and digital peripherals, making the part suitable for mixed-signal designs. The PIC18LF4523 integrates an enhanced Harvard architecture with a 16-bit instruction word and 8-bit data path, supported by an internal 31 kHz to 8 MHz oscillator block and a 4x PLL for 40 MHz operation. Its nanoWatt features provide typical idle current of a few microamps, enabling battery-powered designs to retain RTC operation while consuming negligible power. Typical applications include industrial control panels, sensor signal conditioning, low-power data loggers, home appliance control boards, USB/HID bridges using the MSSP peripheral, and motor control for small DC loads. The wide operating voltage and rich peripheral set also make the PIC18LF4523T-I/PT a frequent choice for educational and prototype development platforms. When designing with this device, ensure decoupling capacitors of 0.1 uF and 10 uF are placed close to VDD/VSS pins, and that the in-circuit serial programming (ICSP) pins are accessible for production programming. The 'LF' prefix indicates the low-voltage (2.0V min) variant - choose the non-LF PIC18F4523T-I/PT only if your supply rail is always above 4.2V. This page synthesizes distributor pricing across DigiKey, Mouser, and Octopart, real drop-in alternatives sourced from Microchip cross-reference tools, and practical PCB design notes not found in the manufacturer datasheet.

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PIC18LF4525-I/P - 8-Bit 48KB Flash MCU 40MHz 40-PDIP | Microchip
PIC18LF4525-I/P

PIC18LF4525-I/P - 8-Bit 48KB Flash MCU 40MHz 40-PDIP | Microchip

The Microchip PIC18LF4525-I/P is an 8-bit RISC microcontroller from the PIC18 family with 48KB of Enhanced Flash program memory, 3968 bytes of RAM, and a 40MHz maximum operating frequency, housed in a 40-pin PDIP through-hole package. The LF variant operates across a wide 2.0V to 5.5V supply range, making it suitable for both 3.3V and 5V systems, while the standard F variant typically targets 4.2V to 5.5V. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory, data RAM, and peripherals such as timers, ADC, and communication interfaces. The PIC18 family uses Microchip's enhanced Harvard RISC architecture with a 16-bit instruction word and an 8-bit data path, providing up to 10 MIPS performance at 40MHz. The LF suffix designates low-voltage operation enabled by NanoWatt power management technology, which reduces active current and adds multiple sleep modes for battery-powered designs. Within Microchip's taxonomy, this part sits at the high-pin-count (36 I/O) performance tier of the PIC18F mainstream family. Key features of the PIC18LF4525-I/P include 48KB (24K x 16) of self-programmable Enhanced Flash, an internal 10-bit ADC with up to 13 input channels, two 8-bit and three 16-bit timers, two capture/compare/PWM modules, a synchronous serial port configurable for SPI or I2C master mode, an Enhanced USART with auto-baud, and a 10 MIPS instruction throughput at 40MHz. The device also integrates nanoWatt technology with multiple power-managed modes (RUN, IDLE, SLEEP) and a 31 kHz low-power secondary oscillator for real-time clock applications. Internally the PIC18LF4525 uses Microchip's enhanced 8-bit RISC core with a hardware multiplier, 32-level stack, and 16-bit instruction word with 8-bit data bus. The Enhanced Flash supports self-programming, ICSP (In-Circuit Serial Programming), and ICD (In-Circuit Debugger) interfaces, while the 3968-byte SRAM and 256-byte EEPROM provide ample headroom for data buffering and parameter storage. The ADC subsystem can convert up to 13 channels at 100 ksps with selectable 2.5V internal voltage reference. Typical applications for the PIC18LF4525-I/P include industrial control panels, sensor signal conditioning and data acquisition, low-power battery-powered instrumentation, USB/HID bridge controllers (paired with an external PHY), HVAC thermostat controllers, automotive body and accessory modules, and consumer white-goods motor control boards. The wide 2.0V-5.5V range supports both 3.3V and legacy 5V designs. When designing with this MCU, plan a decoupling network of 100 nF plus 10 uF bulk capacitors close to VDD/VSS pins, and keep the MCLR reset trace short to avoid spurious resets. Designers should also confirm the 40-pin PDIP footprint (0.1 inch / 2.54 mm pitch) against the target PCB. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

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PIC18LF4525T-I/ML - 48KB Flash 8-bit MCU 44-QFN | Microchip
PIC18LF4525T-I/ML

PIC18LF4525T-I/ML - 48KB Flash 8-bit MCU 44-QFN | Microchip

The Microchip Technology PIC18LF4525T-I/ML is a low-power 8-bit PIC18 microcontroller with 48KB Flash, 3968 bytes RAM and 36 I/O pins, operating at up to 40 MHz in a 44-pin QFN (8x8 mm) package with exposed pad. The LF prefix denotes the 2.0V-5.5V wide VDD range optimized for battery and NanoWatt applications. A PIC18F microcontroller is an 8-bit Harvard-architecture RISC MCU from Microchip's PIC family, used widely in embedded control. The PIC18 sits above the PIC16 family in complexity, adding a 16-bit instruction word, hardware multiplier, C-optimized architecture and priority-interrupt controller. It is the canonical choice for mid-range embedded designs that need more peripherals, memory and computational headroom than PIC16, but do not require a 16-bit or 32-bit core. The LF subfamily specifically targets low-voltage (2.0V-5.5V) operation with NanoWatt sleep modes for power-sensitive designs. Key features include 48KB (24K x 16) Flash program memory, 3968 bytes SRAM, 1024 bytes EEPROM, a 10-bit ADC with up to 13 channels, two analog comparators, two CCP modules, an enhanced USART, MSSP (SPI/I2C), two 8/16-bit timer/counters and NanoWatt power-management modes. The 40 MHz oscillator yields up to 10 MIPS throughput, with a 16-bit instruction word and hardware 8x8 multiply. Integrated ICD (in-circuit debug) is supported via the standard ICSP/ICD interface. Typical applications include industrial control nodes, sensor signal conditioning, automotive body electronics, low-power data loggers, USB/RS-232 bridging peripherals, and consumer white goods. The wide 2.0V-5.5V VDD range and NanoWatt sleep modes make it well-suited for battery-powered or energy-harvesting designs where quiescent current is critical. When designing with this device, ensure the QFN exposed pad is soldered to a sufficient copper pour for thermal dissipation and ground reference. Use MPLAB X IDE with the XC8 compiler for development, and pick the MPLAB ICD 3 or PICkit 5 for in-circuit debug. Note that the PIC18F4525 (F-version, 4.2V-5.5V only) shares pinout but is NOT a drop-in replacement at lower VDD. This page synthesizes distributor pricing, drop-in alternatives drawn from the same PIC18LF45xx family, and practical design notes that complement the manufacturer datasheet without duplicating it.

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PIC18LF4525T-I/PT - 8-bit 40MHz 48KB Flash MCU | Microchip
PIC18LF4525T-I/PT

PIC18LF4525T-I/PT - 8-bit 40MHz 48KB Flash MCU | Microchip

The Microchip Technology PIC18LF4525T-I/PT is an 8-bit RISC microcontroller from the PIC18F family featuring a PIC18 CPU core running at up to 40MHz, packaged in a 44-pin TQFP (10x10 mm) on tape and reel. It integrates 48KB (24K x 16) of Flash program memory, 3.8KB RAM, 1KB (1024 bytes) of data EEPROM, and 36 general-purpose I/O pins. The 'LF' prefix denotes the low-voltage variant rated 2.0V to 5.5V operation, while the 'F' non-LF variant operates 4.2V to 5.5V. A microcontroller (MCU) is a single-chip computer containing a CPU, memory, and programmable I/O peripherals. Within the broader semiconductor taxonomy, MCUs belong to the embedded processing category, alongside microprocessors (MPUs) and DSPs. The PIC18 architecture is an enhanced 8-bit Harvard RISC core with hardware multiplier and 16-bit instructions, sitting between the baseline PIC10/12/16 and the 16-bit PIC24/dsPIC families. The 'nanoWatt Technology' branding indicates advanced power-management features including multiple idle modes, sleep current under 100 nA typical, and peripheral disable for ultra-low-power applications. Key features include a 10-bit ADC with up to 13 channels, 2 analog comparators, 2 CCP/ECCP modules, 2 USART modules (enhanced USART), 1 MSSP (SPI/I2C), and a 16-bit timer plus three 8-bit timers. The device supports ICD (In-Circuit Debugger) via 2-wire interface and self-programming Flash for bootloader implementations. The 44-TQFP package provides a robust industrial footprint for through-hole-free assembly. The PIC18LF4525 architecture uses a 16-bit instruction word with 8-bit data path, a hardware multiply engine, and a 31-level hardware stack for subroutine nesting. With 40MHz operation (10 MIPS), the device delivers deterministic interrupt response and predictable execution timing suitable for real-time control. The Flash memory supports 100K erase/write cycles typical and 40 years retention. Typical applications include industrial control systems, HVAC controllers, motor control peripherals, security alarm panels, remote sensor nodes, smart metering, and consumer appliances. Designers select the LF variant over the F variant for battery-powered applications that must operate below 4.2V, such as 3.3V systems. When migrating from PIC18F4525 to PIC18LF4525, firmware is identical but verify ADC and EEPROM specifications at low voltage. The TQFP-44 package allows easy hand-soldering for prototypes and rework, and the wide VDD range simplifies mixed-voltage designs. This page synthesizes distributor pricing, verified drop-in alternatives from Microchip's same-family portfolio, and practical design notes not consolidated in the manufacturer datasheet.

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PIC18LF452T-I/L - 8-Bit MCU, 40MHz, 32KB Flash, 44-PLCC | Microchip
PIC18LF452T-I/L

PIC18LF452T-I/L - 8-Bit MCU, 40MHz, 32KB Flash, 44-PLCC | Microchip

The Microchip Technology PIC18LF452T-I/L is an 8-bit PIC18 RISC microcontroller with a 40 MHz core speed, 32 KB (16K x 16) of FLASH program memory, 1.5 KB of data RAM, and a 10-bit ADC, housed in a 44-pin PLCC (16.59 x 16.59 mm, J-lead, surface-mount) package. It operates from 2.0 V to 5.5 V across the industrial -40 C to +85 C temperature range and offers 34 digital I/O pins. An 8-bit microcontroller (MCU) is a programmable single-chip computer that fetches, decodes, and executes instructions from on-chip FLASH one byte at a time. Within the broader PIC18 family, this LF (low-voltage / low-power F) variant sits at the bottom of the PIC18 hierarchy, which itself belongs to the Microchip 8-bit PIC microcontroller family and, more generally, the embedded microcontroller category of integrated circuits used in power-conscious and cost-sensitive digital control. Key features of the PIC18LF452T-I/L include 256 bytes of EEPROM data memory, a 10 MIPS instruction execution rate (100 ns per instruction), an enhanced FLASH program memory that supports self-programming and ICD (In-Circuit Debugger), a 10-bit A/D converter with 8 input channels, two Capture/Compare/PWM modules, a USART, an MSSP peripheral that can be configured as either 3-wire SPI or I2C, and a 4-deep hardware stack with 77 single-word instructions in the core instruction set. The architecture is built on CMOS FLASH technology that retains code through power cycles. Typical applications for the PIC18LF452T-I/L include industrial sensor conditioning, low-power embedded control boards, instrumentation front-ends, motor-control signal pre-processing, and battery-backed remote sensor nodes. Its wide 2.0-5.5 V supply range makes it compatible with both 3.3 V and 5 V system rails, simplifying integration into mixed-voltage designs. When designing with this device, choose a regulator and decoupling network rated for the inrush of the PLCC-44's I/O switching. Place a 100 nF decoupling capacitor on each VDD/AVDD pin pair as close to the package as routing allows, and add a bulk 10 uF tantalum or ceramic cap near the MCU for transient load steps. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

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PIC18LF452T-I/ML - 8-bit MCU, 32KB Flash, 40MHz, 44-QFN | Microchip
PIC18LF452T-I/ML

PIC18LF452T-I/ML - 8-bit MCU, 32KB Flash, 40MHz, 44-QFN | Microchip

The Microchip Technology PIC18LF452T-I/ML is an 8-bit PIC18F-family CMOS RISC microcontroller with 32KB (16K x 16) program Flash, 1536 bytes of RAM, and 34 I/O pins, housed in a 44-pin QFN (8x8 mm) exposed-pad package rated for the industrial temperature range -40C to +85C. It executes instructions at up to 10 MIPS from a 40 MHz oscillator, addressing 2 MB of linear program space via a 16-bit enhanced flash architecture, and integrates a 10-bit A/D converter alongside USART, MSSP (SPI/I2C), and parallel slave port peripherals. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, non-volatile program memory, working RAM, and configurable peripheral interfaces onto one die. Within the broader semiconductor hierarchy, the PIC18F452 sits in the Microchip 8-bit PIC18F "high-performance" family between the PIC16F mid-range parts and the 16-bit dsPIC/PIC24F devices, optimized for low-power and cost-sensitive embedded designs running from 2.0V to 5.5V. This places it firmly in the legacy "low-voltage Flash" (LF) class of Microchip MCUs, distinct from the F-prefixed 4.2V-5.5V parts. Key differentiating features include 32KB of self-programmable Flash (in-application programmable via ICSP), 256 bytes of EEPROM data memory, a 10-bit A/D with up to 8 channels, two 8-bit and three 16-bit timers, a CAN-ready peripheral set, and a wide operating voltage range of 2.0V to 5.5V. The 44-QFN (ML) package provides a low-profile 8x8 mm footprint suitable for space-constrained boards while the exposed thermal pad improves heat dissipation at 40 MHz. The PIC18F452 architecture uses a 16-bit instruction word with separate 16-bit data and program paths, a hardware multiplier, and a priority-level interrupt controller. The 8-bit datapath keeps software simple and deterministic, while the 32KB Flash supports C compilers (MPLAB XC8) and field firmware upgrades via the on-chip ICSP/ICD interface. Typical applications include industrial control and sensor nodes, low-power remote keyless entry, HVAC interface panels, USB-to-UART bridges, instrumentation data loggers, and battery-powered measurement devices where the 2.0V minimum VDD enables single Li-ion or two-AA cell operation. The wide peripheral mix suits mixed-signal front ends. When designing with this part, allocate PCB copper under the exposed pad and stitch thermal vias to the inner ground plane to meet the 31.6 C/W theta_JA thermal budget. Brown-out reset and the dual-watchdog timer should be enabled in firmware for noisy industrial environments.

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PIC18LF452T-I/PT - 8-bit 40MHz 32KB Flash MCU 44-TQFP | Microchip
PIC18LF452T-I/PT

PIC18LF452T-I/PT - 8-bit 40MHz 32KB Flash MCU 44-TQFP | Microchip

The Microchip Technology PIC18LF452T-I/PT is an 8-bit RISC microcontroller from the PIC18F family, featuring a 40 MHz CPU core, 32 KB of Flash program memory (16K x 16), 1536 bytes of RAM, and 256 bytes of EEPROM, housed in a 44-pin TQFP (10x10 mm) surface-mount package delivered in tape and reel. An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit data path CPU core, integrating Flash program memory, SRAM, EEPROM, and a rich set of peripherals including timers, ADC, UART, SPI, and I/O. The PIC18F family is positioned in the broader Microchip taxonomy as MCU -> 8-bit microcontroller -> embedded controller -> semiconductor. The "LF" prefix denotes the low-voltage (2.0V-5.5V) variant designed for battery-friendly and low-power applications, while "F" indicates Flash program memory. Key features include 34 digital I/O pins, a 10-bit ADC with up to 8 channels, two Capture/Compare/PWM (CCP) modules, two USART modules, MSSP (SPI/I2C), 4 timers, two analog comparators, and a hardware 8x8 multiplier for integer arithmetic. The device supports In-Circuit Serial Programming (ICSP) and In-Circuit Debug (ICD), enabling field upgrades and real-time emulation without removing the part from the PCB. Architecturally, the PIC18LF452 uses an enhanced RISC Harvard architecture with separate program and data buses, a 16-bit instruction word, and a 32-level hardware stack. This provides deterministic interrupt latency (typically 4 instruction cycles) and predictable execution timing, which is critical for real-time control loops. The "T" suffix indicates tape-and-reel packaging for high-volume assembly. Typical applications include industrial automation controllers, sensor signal conditioning and data acquisition, low-power embedded control, USB/HID peripherals, automotive body electronics, and small-scale motor control. The wide 2.0V-5.5V operating range and 40 MHz throughput make it suitable for both battery-powered portable devices and line-powered industrial systems. When designing with the PIC18LF452, note that Vdd rise time must follow Microchip's power-on sequencing recommendations to ensure a clean startup, and decoupling capacitors (100 nF plus 10 uF) should be placed within 5 mm of the Vdd/Vss pins. The /MCLR pin should be pulled up through a 10 kohm resistor unless the device is intended to remain in reset. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not found in the manufacturer datasheet alone, helping engineers shorten the BOM selection cycle and avoid common layout pitfalls on 44-TQFP land patterns.

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