Microcontroladores

Productos (18756)

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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PIC18LF4539-I/ML - 40MHz 8-bit MCU, 24KB Flash, 44-QFN | Microchip
PIC18LF4539-I/ML

PIC18LF4539-I/ML - 40MHz 8-bit MCU, 24KB Flash, 44-QFN | Microchip

The Microchip PIC18LF4539-I/ML is a low-voltage, 8-bit CMOS microcontroller from the PIC® 18F family, integrating 24KB of Flash program memory, 1408 bytes of RAM, and 256 bytes of EEPROM in a 44-pin QFN (ML) package with an exposed thermal pad. It operates up to 40 MHz across a 2.0V to 5.5V supply range, providing 32 I/O pins, a 10-bit ADC, and the standard PIC18 peripheral set including multiple timers, USART, MSSP (SPI/I2C), and a 10-bit PWM module. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory, RAM, and configurable peripherals on one die. The PIC18 family is Microchip's mid-range 8-bit architecture, positioned above the PIC16 in code density (16-bit instruction word) and below the PIC24/dsPIC in performance. The 'LF' prefix designates the low-voltage variant supporting 2.0V operation, while the non-LF PIC18F4539 typically runs at 4.2V to 5.5V. This makes the PIC18LF4539-I/ML a drop-in choice for battery-powered or 3.3V-only designs. Key features include hardware multiply, 10 MIPS sustained throughput, nanoWatt power management with multiple idle/sleep modes, an in-circuit debugger (ICD) interface, and self-programming Flash for bootloader-style firmware updates. The integrated 10-bit A/D converter provides up to 8 channels of analog input, eliminating an external ADC in many sensor applications. Typical applications include industrial control nodes, HVAC sensor interfaces, low-power handheld instruments, appliance control boards, and USB/HID peripherals using the MSSP peripheral with external PHY. The wide 2V to 5.5V range and QFN-44 footprint also suit automotive body electronics when paired with the automotive-grade PIC18LF4539-I/ML variant. When designing with this part, allocate the exposed thermal pad to a copper pour for both thermal dissipation and ground reference. Use the ICD pins (RB6/RB7) carefully, as alternate functions are limited during debug sessions, and ensure the configuration bits match the oscillator configuration before code lock. This page synthesizes distributor pricing, parametric comparison, and drop-in alternatives not found in any single manufacturer datasheet or distributor listing.

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PIC18LF4539-I/P - 8-bit PIC MCU, 24KB Flash, 40MHz, 40-PDIP | Microchip
PIC18LF4539-I/P

PIC18LF4539-I/P - 8-bit PIC MCU, 24KB Flash, 40MHz, 40-PDIP | Microchip

The Microchip Technology PIC18LF4539-I/P is a low-voltage 8-bit PIC18 RISC microcontroller built on an enhanced Harvard architecture with 24KB (12K x 16) of Flash program memory, 1408 bytes of RAM, and 256 bytes of EEPROM, operating at up to 40MHz (10 MIPS) from a 2.0V to 5.5V supply, and housed in a 40-pin PDIP (P) through-hole package. The "LF" prefix denotes the wide-range, low-voltage variant optimized for battery-friendly designs, while the "I" suffix designates the industrial operating temperature grade of -40C to +85C. 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 peripheral interfaces such as timers, ADC, communication buses (UART, SPI, I2C), and general-purpose I/O. The PIC18 family uses a modified Harvard architecture with separate program and data buses, enabling single-cycle instruction execution and predictable interrupt latency. Within this hierarchy the PIC18LF4539 belongs to the 24-pin/40-pin/44-pin high-performance enhanced-flash family with nanoWatt power-management technology for sleep-mode current optimization. Key differentiating features of the PIC18LF4539 include a 10-bit ADC with up to 8 input channels, a 10-bit PWM module with enhanced resolution (up to 14-bit), a USART with LIN support, an MSSP (SPI/I2C) peripheral, a 16-bit timer/counter, two 8-bit timers, a watchdog timer with its own on-chip RC oscillator, and nanoWatt Technology that provides multiple idle and sleep modes drawing microampere-level currents. The 40-pin PDIP format remains the package of choice for legacy designs, breadboard prototyping, educational platforms, and through-hole industrial control modules where surface-mount assembly is not practical. The wide 2.0V to 5.5V operating range combined with internal oscillator options and the nanoWatt feature set makes the PIC18LF4539-I/P particularly well suited to mains-powered and battery-backed systems that must tolerate slow power-rail transitions. The device is also supported by Microchip's MPLAB X IDE, MPLAB XC8 compiler, and a large ecosystem of application notes, firmware libraries, and development tools. Typical applications include industrial control and automation, sensor-interface front-ends, low-power remote sensors, white-goods and HVAC user-interface controllers, automotive body-comfort modules (non-safety), and educational or hobbyist embedded platforms where through-hole assembly is preferred. When designing with this part, ensure decoupling is placed close to VDD/VSS pins and that unused I/O lines are configured as outputs to minimize quiescent current in sleep modes. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found on the Microchip datasheet alone.

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PIC18LF4539-I/PT - 8-Bit 40MHz 24KB Flash MCU TQFP-44 | Microchip
PIC18LF4539-I/PT

PIC18LF4539-I/PT - 8-Bit 40MHz 24KB Flash MCU TQFP-44 | Microchip

The Microchip Technology PIC18LF4539-I/PT is an 8-bit RISC PIC18-family microcontroller with 24KB of enhanced Flash program memory, 1408 bytes of RAM, and 256 bytes of EEPROM, housed in a 44-pin TQFP (10x10 mm) package. It runs at up to 40 MHz (10 MIPS) and supports a wide operating voltage range of 2.0 V to 5.5 V, making it a true 2.5 V / 3.3 V / 5 V part for industrial-grade designs. The device is part of Microchip's nanoWatt Technology family, integrating power-management modes that cut quiescent current dramatically during idle and run-time idle states. A microcontroller (MCU) is a single-chip computer containing a CPU core, program memory, data memory, peripherals, and I/O ports. The PIC18 family is Microchip's enhanced 8-bit RISC architecture, featuring a 16-bit instruction word, hardware multiplier, linear program memory up to 2 MB, and prioritised interrupt controller. PIC18 parts sit above baseline PIC16 devices in the taxonomy (PIC microcontroller -> 8-bit MCU -> microcontroller -> embedded computing IC), and are commonly used as the main system controller in cost-sensitive embedded products where a 32-bit Cortex-M0/M0+ would be overkill. Key features of the PIC18LF4539 include 32 bidirectional digital I/O pins, an integrated 12-bit ADC (A/D) converter, multiple timers, a USART, MSSP (SPI / I2C), and a dual-channel capture/compare/PWM module. The internal oscillator block supports 31 kHz to 8 MHz operation with PLL up to 40 MHz. Enhanced Flash with self-programmability supports in-application updates. The PIC18LF variant in particular targets low-voltage / battery-powered systems, retaining full performance at 2.0 V. Architecturally, the PIC18LF4539 uses an advanced Harvard RISC core with 16-bit instructions and 8-bit data path, plus a hardware multiplier for fast signed/unsigned operations. The enhanced Flash controller supports single-cycle accesses and ICSP (In-Circuit Serial Programming), allowing firmware updates without removing the part from the PCB. The device also integrates nanoWatt technology modes that drop supply current to the microamp range during sleep, making it suitable for battery-powered sensor nodes. Typical applications include industrial automation and control, low-power remote sensor nodes, USB peripherals (USB-capable variant), motor control, white-goods appliance controllers, instrumentation front-ends, and general-purpose embedded control in 3.3 V systems. For designs moving to newer silicon, the PIC18F46K22, PIC18F46J50, and PIC18F47J53 in the same TQFP-44 footprint offer modern peripherals (XLP, CTMU, RTCC) at lower cost and broader availability. When designing with this part, observe the 2.0 V minimum supply for full 40 MHz operation only with the 'LF' suffix; verify brown-out reset and watchdog timing for your application, and choose external vs. internal oscillator based on timing accuracy needs. The 44-pin TQFP provides an upgrade path to modern PIC18 K-series and J-series parts in the same footprint. This page synthesises distributor pricing, parametric drops-in same-package alternatives, and practical design notes that are not present in the manufacturer datasheet, giving engineers a single source for sourcing and substitution decisions on the PIC18LF4539-I/PT.

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PIC18LF4539T-I/ML - 40MHz 8-Bit MCU, 24KB Flash, 44-QFN | Microchip
PIC18LF4539T-I/ML

PIC18LF4539T-I/ML - 40MHz 8-Bit MCU, 24KB Flash, 44-QFN | Microchip

The Microchip Technology PIC18LF4539T-I/ML is a PIC18F-series 8-bit microcontroller featuring a 40 MHz CPU core, 24 KB (12K x 16) of enhanced Flash program memory, 1408 bytes of SRAM and 256 bytes of EEPROM, housed in a 44-pin QFN (8x8 mm) package. This LF variant operates across an extended 2.0V to 5.5V supply range suited for low-voltage and battery-driven designs. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, non-volatile program memory, working RAM, and a rich set of peripherals (I/O, timers, ADC, communications). Within the broader hierarchy of semiconductor devices, an MCU belongs to the family of microcontrollers, which in turn sits under integrated circuits (ICs) and the wider category of digital logic semiconductors. The PIC18 family is Microchip's mid-range 8-bit architecture offering a balance of code density, deterministic interrupt handling and peripheral integration for embedded-control applications. Key features of the PIC18LF4539T-I/ML include 32 programmable digital I/O pins, an 8-channel 10-bit Analog-to-Digital Converter (ADC), multiple capture/compare/PWM modules, USART, MSSP (SPI/I2C), and dedicated motor-control peripherals consistent with the '4539 part number family. The integrated motor-control kernel supports single-phase induction motor drive, simplifying variable-speed fan/pump designs. The 44-QFN (8x8) package provides a low-profile, thermally efficient footprint for space-constrained boards, with an exposed thermal pad to dissipate controller dissipation. Architecturally, the PIC18 core delivers a 16-bit instruction word with an 8-bit data path, 31-level hardware stack, hardware multiplier, and linear program memory addressing up to 2 MB. The 'LF' sub-family denotes a wide-voltage (2.0-5.5V) variant, giving design flexibility for both 3.3V and 5V rails. The device is qualified for industrial temperatures (-40C to +85C per the 'I' suffix). Typical applications include single-phase induction motor control (fans, pumps, small appliances), industrial instrumentation, white goods and HVAC controls, sensor-signal conditioning, and general-purpose 5V/3.3V embedded systems that benefit from integrated EEPROM storage and PWM channels. When designing with the PIC18LF4539T-I/ML, observe the 44-QFN PCB land pattern and provide adequate copper thermal relief under the exposed pad; the Flash self-programming model relies on the standard PIC18 ICSP/ICD connection on PGC/PGD for in-circuit debugging. This page synthesizes real-time distributor pricing, drop-in same-package alternatives, and practical design notes not found in the manufacturer datasheet.

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PIC18LF4539T-I/PT - 8-Bit 40MHz MCU, 24KB FLASH, 44-TQFP | Microchip
PIC18LF4539T-I/PT

PIC18LF4539T-I/PT - 8-Bit 40MHz MCU, 24KB FLASH, 44-TQFP | Microchip

The Microchip Technology PIC18LF4539T-I/PT is an 8-bit RISC microcontroller from the PIC18F family, featuring 24KB (12K x 16) of FLASH program memory, 1408 bytes of RAM, and a 32-I/O count, all housed in a 44-pin TQFP (10x10 mm) package. It operates at up to 40MHz and supports an industrial temperature range, making it well suited to embedded motor control and sensor interfacing designs. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory, data memory, and peripheral interfaces on one die. PIC18F devices sit in the mid-range of Microchip's 8-bit portfolio (PIC10/12/16/18/24 families) and are widely chosen for industrial control, automotive body modules, and appliance applications where deterministic response and ease of programming outweigh raw computational throughput. The PIC18F architecture supersedes the earlier PIC16F by adding a 16-bit instruction word, larger linear addressing, and richer peripherals while preserving the original PIC instruction set. The PIC18LF4539 includes an integrated Single-Phase Induction Motor Control Kernel, which simplifies firmware development for fan, pump, and small motor drive applications. With 32 general-purpose I/O lines, multiple timers, A/D conversion channels, and PWM/capture/compare peripherals, the device reduces external component count. Its 40MHz clock delivers 10 MIPS of processing throughput, adequate for closed-loop motor control and modest signal-processing tasks. Typical applications include single-phase induction motor drives (fans, pumps, compressors), home appliances (washing machines, refrigerators, induction cookers), industrial control boards, sensor signal conditioning, and human-machine interface panels. The 24KB FLASH supports substantial application code with room for a bootloader or diagnostic routines, while the 1408 bytes of RAM comfortably holds stack, variables, and protocol buffers. When designing with this part, choose the -LF variant (2.0V-3.3V) when system power is derived from a low-voltage rail such as a Li-ion cell, or step down from 5V using an LDO; the non-LF variant PIC18F4539 is required if the system runs directly from 5V. Decouple VDD/AVDD with 100nF and 10uF capacitors placed close to the pins, and reserve MCLR with the recommended 10k pull-up. This page synthesizes distributor pricing from DigiKey and Hotenda, drop-in alternative MPNs from Microchip's PIC18 family, and practical design notes not found on a single distributor page.

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PIC18LF4550-I/ML - 8-bit USB MCU, 32KB Flash, 44-QFN | Microchip
PIC18LF4550-I/ML

PIC18LF4550-I/ML - 8-bit USB MCU, 32KB Flash, 44-QFN | Microchip

The Microchip PIC18LF4550-I/ML is an 8-bit PIC18 RISC microcontroller featuring 32KB of Flash program memory, 2048 bytes of SRAM, and an integrated Full-Speed USB 2.0 transceiver, packaged in a 44-pin QFN (8x8 mm) with an exposed thermal pad and supplied in tube packaging. The device operates from a wide 2.0V to 5.5V supply (the 'LF' low-voltage variant), executes instructions at up to 48 MHz (12 MIPS), and includes on-chip peripherals such as a 10-bit ADC, multiple USART, MSSP (SPI/I2C), CCP/ECCP, and a USB SIE that simplifies USB device designs by eliminating external transceivers. An 8-bit microcontroller (MCU) is a programmable processor that combines a CPU, RAM, non-volatile program memory, and peripheral interfaces on a single silicon die. The PIC18 family belongs to Microchip's enhanced mid-range 8-bit architecture and occupies the hierarchical niche of microcontroller -> embedded processor -> semiconductor. The 'LF' family variant extends the legacy PIC18F4550 lineage into low-voltage applications, while the 'I' suffix denotes the industrial operating-temperature grade of -40C to +85C. The /ML package suffix designates the 44-lead QFN. Key specifications include 32KB Flash (16K x 16 words), 2048 bytes of SRAM, 256 bytes of EEPROM, 35 digital I/O pins, and 13 ADC channels at 10-bit resolution. The integrated Full-Speed USB 2.0 controller supports 12 Mbps operation with on-chip transceivers, internal pull-up resistors, and clock recovery - eliminating external USB components. The instruction set is optimized for C-compiled code with hardware multiply and a hardware stack of 31 levels. Typical applications include USB peripherals (HID, CDC, custom class devices), industrial control interfaces, sensor data acquisition nodes, embedded education platforms, and hobbyist projects where the PIC18F4550 has a long legacy footprint. The wide voltage range allows direct 3.3V or 5V operation from battery or bus-powered rails, and the QFN package enables compact PCB layouts where lead inductance of PDIP/TQFP would otherwise limit signal integrity. When designing with this device, ensure the exposed thermal pad is soldered to a sufficient copper pour to meet theta_JA thermal targets. The 48 MHz internal oscillator accuracy may require calibration or external crystal for timing-critical USB applications; use the internal USB PLL only after configuring the appropriate OSCCON and CONFIG bits as documented in the manufacturer datasheet.

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PIC18LF4550T-I/ML - 8-Bit USB MCU, 32KB Flash, 44-QFN | Microchip
PIC18LF4550T-I/ML

PIC18LF4550T-I/ML - 8-Bit USB MCU, 32KB Flash, 44-QFN | Microchip

The Microchip Technology PIC18LF4550T-I/ML is an 8-bit PIC18 microcontroller with Full-Speed USB 2.0, 32 KB (16K x 16) of Flash program memory, 2 KB of RAM, and a 48 MHz maximum operating frequency, housed in a 44-pin QFN (8x8 mm) package with exposed thermal pad. The 'LF' prefix indicates a wide-voltage core that operates from 2.0 V to 5.5 V, supporting both 3.3 V and 5 V system rails from a single part, while the 'F' (Flash) variant supports in-circuit serial programming (ICSP) for field upgrades. The 'T' suffix denotes Tape-and-Reel packaging for high-volume assembly. A PIC (Peripheral Interface Controller) microcontroller is a Harvard-architecture RISC device where program and data memory occupy separate buses, allowing simultaneous fetch and execute. The PIC18 family extends this concept to 16-bit wide instructions and 8-bit data paths with hardware multiply, position the family between 8-bit baseline/enhanced mid-range PICs and the 16-bit PIC24/dsPIC families. Within that hierarchy, the PIC18LF4550 is the highest-memory Full-Speed USB variant of the PIC18F2455/2550/4455/4550 family, distinguished from the 28-pin PIC18F2550 by its larger 40/44-pin package and 35 usable I/O lines. Key features include on-chip Full-Speed USB 2.0 (12 Mbps) with internal transceiver, a 10-channel 10-bit ADC, two 8-bit and one 16-bit timers, two analog comparators, an EUSART with LIN support, MSSP for both I2C and SPI (up to 10 Mbps SPI), 13-channel hardware PWM (CCP/ECCP), and nanoWatt power management with multiple idle and sleep modes. The 44-VQFN EP package achieves a theta-JA of approximately 32 C/W on a 4-layer JEDEC test board, and the wide-voltage LF core makes the part attractive for both battery-powered and line-powered designs. Architecturally, the PIC18LF4550 integrates the USB SIE, transceiver, and 3.3 V regulator internally, removing the need for external USB PHY components. The 32 KB Flash holds the USB stack, application code, and a small bootloader, while the 2 KB RAM accommodates USB endpoint buffers plus application variables. The internal oscillator block supports 8 MHz, 31 kHz, and PLL-derived 48 MHz modes, enabling USB operation without an external crystal. Typical applications include Full-Speed USB peripherals such as HID input devices, CDC virtual COM ports, and custom device-class firmware; embedded data-acquisition and control nodes; industrial sensor interfaces; low-cost instrumentation; and consumer USB-charging controllers. The wide-voltage LF core makes the part particularly suited to portable USB battery-powered products. When designing with this part, place the 44-VQFN exposed pad onto a continuous ground plane for thermal dissipation and signal integrity, ensure the VUSB pin decoupling includes 100 nF plus 4.7 uF bulk capacitance, and configure the internal 3.3 V USB regulator before bringing USB D+/D- online. Because the part supports ICSP via PGD/PGC, reserve those pins on the PCB for production programming access. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, including same-family 40-pin (PIC18LF4455) and 28-pin (PIC18LF2550) variants and Microchip cross-references to competitor parts.

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PIC18LF4553-I/ML - 8-bit 48MHz USB MCU 32KB Flash | Microchip
PIC18LF4553-I/ML

PIC18LF4553-I/ML - 8-bit 48MHz USB MCU 32KB Flash | Microchip

The Microchip Technology PIC18LF4553-I/ML is a low-voltage 8-bit PIC18 family microcontroller with integrated Full-Speed USB 2.0, packaged in a 44-pin VQFN (ML) with exposed thermal pad. It combines 32 KB of Enhanced Flash program memory, 2048 bytes of SRAM, and a 12-bit ADC with up to 13 channels, while running at up to 48 MHz (12 MIPS) from a 2.0-5.5 V supply. The 'LF' prefix indicates the wide VDD range and nanoWatt power-management features, making it suitable for both battery-powered and bus-powered designs. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory, RAM, and peripherals. PIC18 microcontrollers use Microchip's enhanced Harvard RISC architecture, achieving 200 ns instruction execution and up to 12 MIPS throughput. Within the broader semiconductor taxonomy, MCUs sit under microcontrollers -> processors -> semiconductors, and they form the lowest tier of computing devices for embedded systems where cost, deterministic timing, and peripheral integration matter more than raw compute throughput. Key features include Full-Speed USB 2.0 device/host/OTG support with an internal 3.3V regulator, a 10-bit ADC pre-scaler, two CCP/ECCP modules for PWM and capture/compare, I2C, SPI, and an enhanced USART for serial communication. The device also provides nanoWatt Technology with multiple idle/sleep modes, a programmable brown-out reset (BOR), a hardware watchdog timer (WDT), and high/low-voltage detect (HLVD) for robust operation in industrial environments. The on-chip 32 KB self-programmable flash supports boot-loader and in-application programming via USB, simplifying field firmware updates. Architecturally, the PIC18LF4553 uses an enhanced 16-bit instruction word with 8-bit data paths and a 31-level hardware stack, providing deterministic interrupt response essential for real-time USB stacks. The internal 3.3V regulator can supply the USB transceiver while the core runs from 5V, eliminating the need for external LDO when designing USB peripherals on 5V rails. Typical applications include USB HID peripherals such as custom keyboards and mice, USB-to-UART bridges, industrial data loggers with USB connectivity, and low-power sensor nodes that occasionally wake up to enumerate as USB devices. Designers should add a 1uF bypass capacitor near the VUSB3V3 pin and follow Microchip's USB hardware checklist for EMI/ESD compliance when targeting industrial temperature grades.

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PIC18LF4553-I/P - 8-Bit 48MHz 32KB Flash USB MCU | Microchip
PIC18LF4553-I/P

PIC18LF4553-I/P - 8-Bit 48MHz 32KB Flash USB MCU | Microchip

The Microchip PIC18LF4553-I/P is an 8-bit PIC18 microcontroller with integrated USB 2.0 Full-Speed peripheral, 32KB of Flash program memory, 2KB of RAM, and a 48MHz (12 MIPS) enhanced Harvard architecture core, housed in a 40-pin PDIP through-hole package. The device operates from 2.0V to 5.5V and features nanoWatt power management for battery-friendly applications. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory (Flash/ROM), data memory (RAM), and peripherals on one die. The PIC18F family extends the baseline PIC16 architecture with a 16-bit instruction word, hardware multiplier, and a linear program/data memory map; the PIC18LF4553 specifically adds a USB 2.0 Full-Speed Serial Interface Engine (SIE) and a 12-channel 10-bit ADC, making it one of the earliest members of the "F4553" USB-capable PIC18 lineup. Key features include 32KB (16K x 16) self-programmable Flash, 2KB RAM, 256 bytes of EEPROM, 35 digital I/O pins, an Enhanced Universal Synchronous/Asynchronous Receiver/Transmitter (EUSART), two MSSP modules for SPI/I2C, a 12-bit ADC with 13 channels and 100 ksps, two analog comparators, and a CTMU (Charge Time Measurement Unit) for capacitive touch. The "LF" prefix indicates the Low-Voltage/Frequency variant optimized for 2.0V-5.5V operation with full-speed 48MHz CPU clock. The PIC18LF4553 uses Microchip's enhanced 8-bit RISC-style Harvard core with a 16-bit instruction width, 8-bit data path, hardware multiply, and a single-cycle 8x8 multiplier. The integrated USB SIE handles USB protocol in hardware, freeing the CPU from bit-banging. nanoWatt technology adds dynamic clock switching, idle/doze/sleep modes, and an ultra-low-power wake-up RTC, enabling years of operation from a single coin cell in typical duty-cycled applications. Typical applications include USB HID peripherals (keyboards, mice, custom input devices), USB-to-UART bridges, low-cost USB data loggers, USB CDC virtual COM ports, embedded learning boards (PIC18F4553 is a popular teaching platform), industrial sensor interfaces with USB diagnostics, and battery-powered USB-capable instrumentation. When designing with this part, allocate 4KB of the 32KB Flash for the USB bootloader or CDC stack if needed; reserve the D+/D- pins (pins 23/24 on PDIP) for the USB bus with proper 15kΩ pull-down and series termination; and add a 27-33pF crystal with two 22pF load capacitors for the 48MHz primary oscillator. The internal PLL multiplies a 4MHz/8MHz/12MHz/16MHz/20MHz/24MHz crystal or external clock up to 48MHz. This page synthesizes distributor pricing, drop-in same-package alternatives, USB design notes, and a parametric comparison that the manufacturer datasheet alone does not provide.

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PIC18LF458-I/PT - 8-bit MCU, 32KB Flash, CAN, 44-TQFP | Microchip
PIC18LF458-I/PT

PIC18LF458-I/PT - 8-bit MCU, 32KB Flash, CAN, 44-TQFP | Microchip

The Microchip Technology PIC18LF458-I/PT is an 8-bit RISC microcontroller from the PIC18F family, delivering up to 40 MHz (10 MIPS) of processing power with 32KB of Flash program memory, 1.5KB of SRAM, and 256 bytes of EEPROM, housed in a 44-pin TQFP (10x10 mm) package. The device integrates a CAN 2.0B controller, an 8-channel 10-bit ADC, and a rich set of peripherals including USART, SPI, and I2C. What is a PIC18F microcontroller? The PIC18F family is Microchip's high-performance 8-bit microcontroller line based on an enhanced Harvard RISC architecture. An 8-bit MCU executes instructions on 8-bit data words and is widely used in embedded control applications where deterministic timing, low power consumption, and integrated peripherals (ADC, timers, communication buses) outweigh the need for higher throughput. PIC18F sits above the PIC16F family in Microchip's portfolio and below the 16-bit dsPIC/PIC24 families, serving cost-sensitive industrial and automotive applications. Key features include an extended instruction set, hardware multiplier, 13-bit program counter capable of addressing 8MB of linear program memory, and self-programming Flash. The PIC18LF458 (LF variant) operates across an extended voltage range suited for low-voltage designs and includes a 10-bit ADC with up to 8 channels. The device supports in-circuit debugging via ICSP and in-circuit serial programming, eliminating the need for external programmers in production. Typical applications include industrial automation (CAN-based sensor nodes, motor controllers), automotive body electronics (CAN bus nodes, lighting controllers), and embedded control systems (sensor aggregation, simple HMI). The integrated CAN 2.0B controller makes the PIC18LF458 particularly well-suited for distributed control networks where the MCU acts as a node on a CAN bus. Brown-out detection, watchdog timer, and low-power Sleep mode enhance reliability in safety-conscious designs. When designing with this device, choose the LF variant for 2.0-3.6V operation versus the standard F variant's 4.0-5.5V range. Ensure the oscillator configuration matches the application's EMI tolerance, as the integrated CAN controller requires stable clocking for reliable network communication.

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PIC18LF4580-I/P - 8-Bit 40MHz 32KB Flash MCU w/ CAN | Microchip
PIC18LF4580-I/P

PIC18LF4580-I/P - 8-Bit 40MHz 32KB Flash MCU w/ CAN | Microchip

The Microchip Technology PIC18LF4580-I/P is an 8-bit PIC18 microcontroller with integrated CAN bus controller, 32 KB (16K x 16) of Flash program memory, and a 40 MHz maximum operating frequency, housed in a 40-pin PDIP through-hole package. The LF suffix designates the low-voltage (2.0V-5.5V) variant of the PIC18F4580, suitable for battery-powered and energy-conscious designs. A microcontroller (MCU) is a single-chip computer containing a CPU core, program memory (Flash), data memory (RAM), and programmable I/O peripherals. The PIC18 family sits in Microchip's 8-bit mid-range portfolio - positioned above baseline PIC10/12/16 parts and below the 16-bit PIC24/dsPIC families - and is widely adopted in industrial control, automotive, and CAN-bus-connected embedded applications. The integrated ECAN module sets the PIC18LF4580 apart from general-purpose 8-bit MCUs, enabling it to participate directly on Controller Area Networks without an external transceiver-controller pair. Key features include 32 KB Flash program memory, 1536 bytes of RAM, 256 bytes of EEPROM, 36 digital I/O pins, and a 10-bit ADC with up to 11 channels. Peripherals include enhanced USART, MSSP (I²C/SPI), enhanced CAN (ECAN), capture/compare/PWM (ECCP) modules, and multiple timers. The LF variant operates across 2.0V-5.5V, with 40 MHz CPU clock from the integrated 10 MHz phase-locked-loop oscillator. The PIC18F4580 uses an enhanced Harvard RISC architecture with a 16-bit instruction word, 8-bit data path, hardware multiplier, and a 32-level hardware stack. The ECAN peripheral supports CAN 2.0B active with multiple transmit/receive buffers, filters, and masks. Internal oscillator modes (8 MHz, 4 MHz, 32 kHz, and PLL) reduce external component count and improve noise immunity in industrial environments. Typical applications include industrial CAN node controllers, automotive body and chassis ECUs, sensor data acquisition nodes, HVAC control boards, building automation gateways, and battery-powered instrumentation. The combination of integrated CAN, generous I/O count, and wide operating voltage make the part especially popular in legacy industrial and automotive designs predating the shift to 32-bit ARM Cortex-M MCUs. When designing with this part, ensure the ICSP/ICD pins (RB6/RB7 or dedicated PGC/PGD on larger packages) are accessible for in-circuit programming and debugging. The 40-pin PDIP package is friendly for prototyping and rework but consumes significant PCB area; consider the TQFP-44 (PT) or QFN-44 (ML) variants of the same die for production layouts. This page synthesizes verified distributor pricing, drop-in and same-die alternatives sourced from Microchip's own part numbering system, and practical design notes not always called out in the manufacturer datasheet.

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PIC18LF4580-I/PT - 8-bit 40MHz MCU, 32KB Flash, ECAN | Microchip
PIC18LF4580-I/PT

PIC18LF4580-I/PT - 8-bit 40MHz MCU, 32KB Flash, ECAN | Microchip

The Microchip Technology PIC18LF4580-I/PT is an 8-bit RISC PIC18 microcontroller with 32KB (16K x 16) of Flash program memory, 1536 bytes of SRAM and 256 bytes of data EEPROM, housed in a 44-pin TQFP (10x10 mm) industrial-temperature package. It executes instructions at up to 40 MHz (10 MIPS) from an enhanced PIC18 Harvard architecture with a modified RISC instruction set, while the LF process node plus nanoWatt Technology features allow core operation down to 2.0 V for battery-backed designs. An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit data path, on-chip program memory, RAM, peripherals and interrupt logic, designed to sense, decide and act in embedded systems. Within the broader semiconductor taxonomy, an MCU sits under microcontrollers -> embedded processors -> digital ICs -> integrated circuits, while PIC18F-family parts target cost-sensitive deterministic control where 8-bit simplicity and a mature toolchain outweigh the raw throughput of 16-/32-bit Cortex-M parts. Key features include an integrated ECAN (Enhanced Controller Area Network) module supporting CAN 2.0B active, a 10-bit Analog-to-Digital Converter with 11 input channels, two analog comparators, two Capture/Compare/PWM (ECCP) modules, two UART/USART ports, one SPI bus and one I2C/Master-Sync-Serial-Port bus. The device exposes 36 programmable digital I/O lines, supports In-Circuit Serial Programming (ICSP) and In-Circuit Debug (ICD), and includes nanoWatt power-management modes such as idle, sleep and a real-time clock with on-chip low-power Timer1 oscillator. Architecturally, the PIC18LF4580-I/PT uses a 16-bit instruction word with 8-bit data, eight-level hardware stack and 32 interrupt sources, giving deterministic response times suitable for real-time control. The ECAN controller handles bus arbitration, acceptance filtering (16 masks / 16 filters) and message buffering in hardware, offloading what would otherwise be CPU-intensive bit-banging from the application core. Typical applications include automotive body and chassis networks (CAN nodes), industrial CANopen and DeviceNet slave devices, building-automation controllers, sensor-hub designs and low-power battery-powered instruments. The wide 2.0-5.5 V operating range makes it well-suited to mixed 3.3 V / 5 V rails. When designing with this part, place a 100 nF decoupling capacitor on every VDD/VSS pair and a bulk 10 uF on the main rail, keep the 40 MHz crystal traces short with a guarded ground plane, and use the on-chip ECAN rather than an external controller wherever PCB area or BOM cost is critical. This page synthesizes distributor pricing, drop-in same-package alternatives and practical design notes not consolidated in the manufacturer datasheet.

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PIC18LF4580T-I/ML - 8-bit 40MHz 32KB Flash MCU w/ CAN | Microchip
PIC18LF4580T-I/ML

PIC18LF4580T-I/ML - 8-bit 40MHz 32KB Flash MCU w/ CAN | Microchip

The Microchip Technology PIC18LF4580T-I/ML is an 8-bit PIC18 microcontroller with integrated CAN controller, delivering 40 MIPS performance from a 40 MHz oscillator, packaged in a 44-pin QFN (8x8 mm) with industrial -40C to +85C temperature rating. Key specifications include 32 KB of Flash program memory (16K x 16 words), 1.5 KB of SRAM data memory, and 256 bytes of EEPROM. The device integrates a 10-bit ADC with up to 13 channels, two CCP modules, an Enhanced USART, MSSP for SPI and I2C, and a CAN 2.0B controller compliant with ISO 11898. A PIC microcontroller is an 8-bit Harvard-architecture RISC device built around a small instruction set and separate program/data buses, designed for deterministic embedded control. PIC18 family devices add 16-bit instructions, linear memory, and richer peripherals while retaining the small footprint and low power consumption that made the family popular. The PIC18LF4580 specifically targets CAN-enabled industrial nodes such as automotive body controllers, sensor gateways, and factory automation peripherals. The LF prefix indicates a wide VDD operating range of 2.0 V to 5.5 V, allowing direct battery and 3.3 V regulator operation. Ten oscillator modes including internal RC and PLL support flexible clocking. The CAN 2.0B module, ECAN with DeviceNet configuration, and three maskable interrupt sources enable deterministic real-time response for time-critical industrial networks. NanoWatt power management provides idle, sleep, and Run mode current profiles suitable for battery-backed nodes. Typical applications include CAN node endpoints in vehicle body and chassis networks, industrial sensor hubs, HVAC controllers, building automation nodes, and low-power telemetry with CAN interface. The 44-pin QFN (8x8 mm) package supports compact PCB layouts where a TQFP footprint is undesirable. Design consideration: when migrating PIC18F4580 to LF, verify that peripheral driver stack supports the lower 2.0 V rail and confirm CAN bus transceiver selection matches the LF VDD range. Compared with newer PIC18 K-series, this LF4580 offers simpler peripherals and wider ecosystem code support but draws more active current. This page synthesizes distributor pricing, verified drop-in alternatives from Microchip's PIC18 family, and practical design notes not found in the manufacturer datasheet alone.

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PIC18LF4580T-I/PT - 8-bit PIC MCU, 32KB Flash, 40MHz, 44-TQFP
PIC18LF4580T-I/PT

PIC18LF4580T-I/PT - 8-bit PIC MCU, 32KB Flash, 40MHz, 44-TQFP

The Microchip Technology PIC18LF4580T-I/PT is a low-voltage, 8-bit PIC18 microcontroller featuring 32KB of Flash program memory, 1536 bytes of SRAM, and 256 bytes of EEPROM, all housed in a 44-pin TQFP (10x10 mm) package. Operating from a 2.0V to 5.5V supply, the device executes instructions at up to 10 MIPS from a 40 MHz oscillator and integrates a 10-bit ADC with up to 13 channels, a CAN 2.0B controller, an ECAN module, and the nanoWatt Technology power-management feature set. The 'T' suffix indicates tape-and-reel packaging and the 'I' suffix denotes the industrial -40C to +85C operating temperature range. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory, volatile data memory, and configurable peripherals. The PIC18 family is Microchip's high-performance 8-bit architecture, positioned between the cost-optimized PIC16 family and the 16-bit dsPIC/PIC24 families. PIC18 MCUs typically include a hardware multiplier, prioritized interrupt controller, and a modified Harvard bus that lets the CPU read program memory as data through a table-read mechanism. They target embedded control applications that need deterministic response, low power, and a rich peripheral set without the cost of an ARM Cortex-M part. Key features of the PIC18LF4580T-I/PT include 36 digital I/O pins, dual USART, MSSP (SPI/I2C), a parallel slave port, CTMU for capacitive touch or general current-source measurement, and nanoWatt Technology modes (Idle, Sleep, Low-Power Sleep, and Deep Sleep) that drop quiescent current below 1 uA in deep sleep. The 'LF' variant targets low-voltage 2.0V operation, whereas the standard PIC18F4580 requires 4.2V minimum VDD; both share the same instruction set, peripheral set, and pinout, simplifying migration. The ECAN controller implements CAN 2.0B active with hardware acceptance filters, time-stamping, and multiple buffers, which is unusual at this price point and makes the part a strong fit for industrial networking. The 10-bit ADC supports up to 13 input channels with automatic acquisition and a 100 ks/s aggregate throughput, while CTMU enables capacitive-touch keypads, temperature measurement with a thermistor, or precision timing. Typical applications include CAN-based industrial automation, automotive body and chassis ECUs, building automation nodes, HVAC controllers, and small embedded control boards where 32KB of Flash and ECAN communication outweigh the need for a 32-bit core. The TQFP-44 package suits hand-solderable prototypes and surface-mount production lines alike. When designing with this part, configure the CONFIG words in MPLAB X IDE for the target oscillator and required peripherals, and always hold MCLR high through a 10 kohm pull-up. Decouple VDD/VSS with a 100 nF ceramic capacitor placed within 5 mm of each pin pair. This page synthesizes distributor pricing, drop-in alternatives, and design notes not found on any single manufacturer or distributor page, giving engineers and buyers a single reference for the PIC18LF4580T-I/PT.

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PIC18LF4585-I/ML - 8-bit MCU 48KB Flash ECAN 44-QFN | Microchip
PIC18LF4585-I/ML

PIC18LF4585-I/ML - 8-bit MCU 48KB Flash ECAN 44-QFN | Microchip

The Microchip PIC18LF4585-I/ML is an 8-bit PIC18 microcontroller with 48 KB of Flash program memory and 3,328 bytes of RAM, integrating a built-in ECAN (Enhanced Controller Area Network) module and housed in a 44-pin QFN (8x8 mm) package. It runs at up to 40 MHz CPU clock from a 2.0V to 3.6V supply (LF variant, low-voltage), delivering 10 MIPS performance and 16 MIPS at 64 MHz under extended voltage conditions, with 10-bit ADC and CCP/ECCP peripherals. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash/ROM), data memory (RAM), and peripherals such as timers, ADC, communication buses, and I/O ports on one die. PIC microcontrollers from Microchip use a RISC architecture with a small, deterministic instruction set optimized for embedded control. Within the broader taxonomy, a PIC18LF4585 belongs to: microcontroller -> 8-bit MCU -> PIC18 family -> Flash MCU -> embedded controller -> semiconductor IC. The LF prefix denotes the low-voltage (2.0V-3.6V) variant of the PIC18F4585, trading absolute clock headroom for lower power consumption. Key differentiating features include the integrated ECAN controller (CAN 2.0B active) for automotive and industrial bus networks, 48 KB self-programmable Flash with 1 KB EEPROM, hardware multipliers for 8x8 single-cycle math, nanoWatt power management with idle/doze/sleep modes, and in-circuit debug/programming via two ICD pins. The 44-QFN package offers a low 8x8 mm footprint suitable for space-constrained industrial modules. Architecturally, the PIC18LF4585 uses a Harvard RISC core with a 16-bit instruction word and 8-bit data path, employing nanoWatt technology for low standby currents (under 100 nA typical in sleep). The ECAN module supports standard and extended identifiers, maskable filters, and bit timing configurable for 1 Mbps networks. The device retains legacy 18F compatibility while adding peripheral flexibility required for protocol bridging. Typical applications include CAN bus node endpoints in automotive body and powertrain ECUs, industrial automation slaves communicating on DeviceNet or CANopen, embedded sensor hubs with UART/SPI bridges to CAN, low-power battery instrumentation, and HVAC building controllers. The wide peripheral set supports both motor control (via ECCP) and protocol routing without an external transceiver MCU. Design considerations: ensure the 44-QFN exposed pad (pin 45) is soldered to a sufficiently large copper pour to meet thermal dissipation, and use 1% decoupling capacitors (100 nF plus 10 uF bulk) within 5 mm of VDD pins. Brown-out reset configuration in CONFIG2L must be enabled for automotive applications to guarantee defined startup behavior. This page synthesizes distributor pricing, drop-in alternatives in the same 44-QFN footprint, and practical design notes that complement the manufacturer datasheet.

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PIC18LF4585-I/P - 8-Bit 40MHz 48KB Flash MCU w/ECAN | Microchip
PIC18LF4585-I/P

PIC18LF4585-I/P - 8-Bit 40MHz 48KB Flash MCU w/ECAN | Microchip

The Microchip PIC18LF4585-I/P is an 8-bit RISC flash microcontroller with integrated ECAN, 48KB of program memory (24K x 16 words) and a 40MHz maximum clock speed, housed in a 40-pin PDIP (DIP-40) through-hole package. This PIC18F-family device delivers 200 ns instruction execution, 3328 bytes of RAM, and full CAN 2.0B active compliance for in-vehicle and industrial networks. An 8-bit microcontroller (MCU) is a single-chip computer built around a CPU with an 8-bit data path, on-chip flash program memory, RAM, and a rich set of peripherals (timers, ADC, communication ports). The PIC18F family, a subset of Microchip's PIC microcontroller hierarchy, extends the base PIC16 architecture with enhanced 16-bit instructions, linear memory addressing up to 2 MB, and C-optimized design models. PIC18F parts sit within the broader taxonomy: 8-bit MCU -> microcontroller -> embedded processor -> semiconductor IC. The 'LF' prefix denotes the low-voltage (2.0-3.3V) core variant, while '4585' identifies the specific pinout/memory/peripheral profile. Key features of the PIC18LF4585-I/P include 48KB flash, 3328 bytes RAM, 256 bytes EEPROM, hardware ECAN module, 10-bit ADC with up to 13 channels, two USART modules, MSSP (SPI/I2C), two 8-bit and three 16-bit timers, nanoWatt power management, and an extended -40C to +85C industrial operating range. The 'I' suffix denotes the industrial temperature grade. The PIC18LF4585-I/P uses an advanced RISC Harvard architecture with separate program and data buses, a 16-bit instruction word, and an 8-level hardware stack. Internal PLL options multiply the external oscillator to achieve 40MHz operation, while nanoWatt technology provides multiple idle and sleep modes for battery-friendly operation. Hardware ECAN eliminates CPU overhead for CAN frame handling, freeing the core for application logic. Typical applications include automotive body controllers and HVAC modules, industrial CAN-based sensor networks, CAN-to-UART bridges, embedded data loggers, and low-voltage battery-powered instrumentation. The wide 2.0V-3.3V core voltage range (with 5V-tolerant I/O in some configurations) supports both 3.3V-only and mixed-voltage designs. When designing with this device, ensure the ECAN bus is terminated with 120 ohm resistors at each end of the bus, and use shielded twisted pair cable for noisy industrial environments. The internal oscillator may be used to save BOM cost, but a crystal is recommended for time-critical communications such as CAN at higher bit rates. This page synthesizes distributor pricing, drop-in alternatives drawn from the same Microchip PIC18F family, and practical design notes not found in the manufacturer datasheet.

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PIC18LF4585-I/PT - 8-bit 40MHz 48KB Flash MCU w/ECAN | Microchip
PIC18LF4585-I/PT

PIC18LF4585-I/PT - 8-bit 40MHz 48KB Flash MCU w/ECAN | Microchip

The Microchip Technology PIC18LF4585-I/PT is a low-voltage, enhanced 8-bit PIC microcontroller with 48KB of Flash program memory, 3,328 bytes of RAM, and an integrated ECAN (Enhanced Controller Area Network) module, delivered in a 44-pin TQFP (10x10 mm) package. It executes instructions at 40 MHz (10 MIPS) from a 16-bit modified Harvard RISC core, integrates an 11-channel 10-bit ADC, five 16-bit timers, two analog comparators, a USART, MSSP (SPI/I2C), and supports 36 digital I/O pins with 25 mA source/sink capability. An 8-bit microcontroller is a single-chip computing engine built around an 8-bit data path, where the CPU, program memory (Flash/ROM), data RAM, and a curated set of on-chip peripherals (timers, ADC, communication ports, comparators) are integrated into one package. 8-bit MCUs sit in the broader taxonomy of microcontrollers -> embedded controllers -> digital ICs -> semiconductors. Within that hierarchy, PIC18F/LF devices target mid-range embedded applications requiring deterministic interrupt response, low BOM cost, and a robust instruction set with C-friendly constructs - they bridge the gap between simple 8-bit MCUs and higher-performance 16/32-bit cores. The PIC18LF4585-I/PT key features include the integrated ECAN controller (CAN 2.0B compliant with hardware filtering), 1KB of on-chip EEPROM for data parameter storage, a 10 MHz internal oscillator plus external clock options, low-power sleep modes drawing microamp-level currents, and an industrial -40C to +85C operating range. The wide 2.0V to 5.5V supply (denoted by the LF prefix) makes it directly suited to battery-backed and regulated 3.3V designs. The PIC18F/LF4585 architecture is built on the standard PIC18 RISC core with 16-bit instructions and an 8-bit data path, providing 77 instructions, an 8-level hardware stack, and 32 vectored interrupts. On-chip peripherals are mapped through a SFR-based architecture and reach the pins through carefully assigned I/O multiplexers - this enables flexible pinout remapping while keeping the 44-pin TQFP package footprint stable across variants. Typical applications include industrial CAN bus nodes (factory automation, motor control), automotive body and comfort ECUs (LIN-to-CAN gateways), medical instrumentation requiring reliable data EEPROM logging, and consumer products needing USB/CAN/UART multi-protocol bridging. The LF (low-voltage) variant is especially well-suited to battery-powered or 3.3V-only designs. When designing with this device, choose the PIC18LF version if your system runs at 2.0V-3.3V; choose the standard PIC18F version for 4.2V-5.5V systems. Always include a 100 nF decoupling capacitor close to each VDD/VSS pair and route the analog VDD/VSS through a ferrite bead if the ADC and digital switching coexist on the same board. This page consolidates distributor pricing, drop-in alternatives, application reference circuits, and practical design notes not found in the manufacturer datasheet alone.

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