Circuitos Integrados

PIC18F4439-I/PT

PIC18F4439-I/PT - 8-bit 40MHz 12KB Flash MCU w/ Motor Control | Microchip

The Microchip Technology PIC18F4439-I/PT is an 8-bit RISC microcontroller in the PIC18F family that integrates a sophisticated motor-control kernel with Flash program memory, designed specifically for single-phase induction motor control and other real-time control applications. It operates at up to 40 MHz, supplies 12 KB of Flash program memory, and is housed in a 44-pin TQFP (PT) package rated for the industrial temperature range. The PIC18F family of microcontrollers (MCU) is an 8-bit C-compiler-friendly architecture that combines high computational performance with rich on-chip peripherals. Within this family, the PIC18F4439 belongs to the PIC18FXX39 subgroup that adds a dedicated motion-feedback PWM kernel, a quadrature encoder interface, an input-capture module, and 8 channels of 10-bit analog-to-digital conversion - features that target closed-loop motor-control and switched-mode power-conversion designs. Key specifications include 40 MHz maximum clock speed, 12 KB (typically 6K x 16) of self-programmable Flash with 256 bytes of EEPROM, 768 bytes of SRAM, 36 user I/O lines, a 10-bit ADC with eight channels, dual PWM outputs suitable for full-bridge or three-phase topologies, and an ICD (In-Circuit Debugger) interface. The device supports supply voltages from 4.2 V to 5.5 V and runs the standard PIC18 instruction set, enabling code reuse across the PIC18 portfolio. Architecturally, the PIC18F4439 integrates the PIC18 RISC core with hardware multiply and a hardware motor-control PWM module featuring dedicated time bases and edge-aligned/center-aligned modes. This combination lets the engineer's firmware maintain deterministic control loop timing without loading the CPU, which is essential for sinusoidal commutation of single-phase induction motors and variable-frequency drives. Typical applications include single-phase induction motor drives, appliance fan and pump controllers, BLDC and PMDC motor controllers, digital inverters, uninterruptible power supplies, switched-mode power supplies, and industrial automation boards that require deterministic PWM and precise feedback sampling. When designing with this part, follow the datasheet decoupling guidance: place one 100 nF ceramic bypass capacitor adjacent to each VDD/VSS pair and a bulk capacitor at the regulator output. For motor-control layouts, keep the high-current switching traces away from the analog AVSS/AVDD traces to avoid ground-bounce noise coupling into the ADC result register. The PIC18F4439-I/PT is the industrial-temperature variant (-40 C to +85 C); the PIC18F4439-E/PT extends this to the extended grade while the PIC18LF4439-I/PT supports lower voltage operation for battery-aware designs. This page consolidates datasheet specifications, distributor pricing as of 2026-09-27, and verified drop-in alternatives from Microchip's PIC18F family so that engineers can make a faster sourcing and design-in decision than by reading dozens of separate vendor pages.

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PIC18F4439T-E/ML

PIC18F4439T-E/ML - 8-bit Motor Control MCU, 12KB Flash, 44-QFN | Microchip

The Microchip PIC18F4439T-E/ML is an 8-bit Flash microcontroller from the PIC18F family, engineered specifically for single-phase induction motor control. It features 12 KB of Flash program memory, 640 bytes of RAM, 32 I/O pins, and is housed in a 44-pin QFN (ML) surface-mount package. The device operates across the extended -40C to +125C industrial temperature range and is supplied in Tape & Reel (T/R) packaging for high-volume assembly. A PIC18F microcontroller is an 8-bit Harvard-architecture MCU that combines a RISC-like instruction set with on-chip Flash, EEPROM, RAM, and a rich set of peripherals including timers, ADC, PWM, and communication interfaces. Within the broader taxonomy, PIC18F devices sit between baseline PIC16 parts and the 16-bit dsPIC/PIC24 families, and they belong to the wider category of embedded microcontrollers -> microcontrollers -> standard ICs. Microchip's PIC18F series is widely used for motor control, sensing, and general-purpose embedded designs. The PIC18F4439 integrates a sophisticated motor-control kernel with dedicated PWM and ADC triggering hardware optimized for single-phase induction motor drives. Key parameters verified from the manufacturer datasheet include 12 KB Flash, 640 bytes RAM, a 44-QFN package, and the -E (extended) temperature grade. The device supports Microchip's ICD in-circuit debugging and ICSP programming, accelerating firmware iteration. Architecturally, the PIC18F4439 uses an enhanced 8-bit core with a 16-bit instruction word and a hardware multiplier, providing predictable interrupt response for real-time motor control loops. The on-chip motor-control peripherals include a Power Control PWM module with configurable dead-band control and an ADC that can be triggered synchronously to PWM edges for precise current sampling. Typical applications include single-phase induction motor drives (fans, pumps, compressors), white-goods appliance control, small HVAC blowers, and low-cost BLDC/PMSM positions where the integrated kernel reduces firmware complexity. It is also used in industrial sensor signal conditioning and consumer appliance main control boards. When designing with this device, ensure the 44-QFN thermal pad is properly soldered to a sufficiently large copper pour to keep junction temperature within the -40C to +125C range at full CPU load. The integrated motor-control kernel can substantially reduce firmware development time but engineers should still validate current-sampling timing on the actual motor load. This page consolidates distributor pricing, same-family Microchip drop-in alternatives, and practical design notes specific to the PIC18F4439T-E/ML, complementing the manufacturer datasheet with engineering context not found on generic distributor pages.

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PIC18F4439T-E/PT

PIC18F4439T-E/PT - 8-bit MCU 12KB Flash 40MHz TQFP-44 | Microchip

The Microchip Technology PIC18F4439T-E/PT is an 8-bit enhanced Flash microcontroller with 12 KB of program memory, 40 MHz CPU clock, and 36 I/O pins in a 44-pin TQFP package. It is part of the PIC18F family engineered for single-phase induction motor control and offers nanoWatt power management with a 10-bit A/D converter. Key features include 12 KB Flash program memory, 336 bytes of general-purpose RAM, a 10-bit Analog-to-Digital converter with multiple channels, and an integrated Power Control PWM module tailored for variable-speed motor drive topologies. The wide 4.2V to 5.5V supply range, automotive-grade -40C to +125C operating temperature, and 40 MHz maximum clock rate make it suitable for harsh industrial and automotive environments. The TQFP-44 (PT) surface-mount package supports compact PCB layouts while providing ample I/O for motor control loops and sensing. The PIC18F4439T-E/PT utilizes Microchip's enhanced PIC18 RISC architecture with a modified Harvard memory layout. This architecture includes hardware multiply, single-cycle access to RAM, and a deterministic interrupt structure, simplifying real-time motor control firmware development. The on-chip PWM module with dedicated time base, dead-band control, and fault inputs is purpose-built for single-phase induction motor (SPIM) commutation, replacing external analog control loops with deterministic firmware execution. Typical applications include single-phase induction motor controllers, variable-speed fan drives, compressor control boards, white-goods appliance motor drives, and industrial pump controllers. The automotive-grade (-E) temperature range and PWM-on-the-fly features also suit EV auxiliary pumps and HVAC blower modules. Combined with the nanoWatt sleep modes, the part fits battery-backed and energy-efficient appliance platforms. When designing with the PIC18F4439T-E/PT, ensure external crystal or resonator selection matches the chosen PLL configuration and that the PWM fault inputs are properly bonded to protect the gate drivers. The enhanced Flash supports in-circuit serial programming (ICSP) via two dedicated pins, so allocate a programming header footprint even on production boards to enable field firmware updates.

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PIC18F4439T-I/ML

PIC18F4439T-I/ML - 8-bit MCU, 12KB Flash, 40MHz, QFN-44 | Microchip

The Microchip Technology PIC18F4439T-I/ML is an 8-bit Flash microcontroller in the PIC18F family, integrating 12KB of program memory, 640 bytes of RAM, and 36 I/O pins in a 44-pin QFN (ML) package with an exposed thermal pad. It operates from a 4.2V to 5.5V supply at up to 40 MHz and is built around an enhanced Harvard architecture tailored for single-phase induction motor control and other high-performance embedded control tasks. What is a PIC18F microcontroller? The PIC18F family is a high-performance 8-bit RISC MCU line from Microchip Technology that pairs a modified Harvard core with on-chip Flash, EEPROM, and a rich peripheral set, bridging the gap between classic PIC16F parts and 16-bit dsPIC devices. Within the broader taxonomy, the PIC18F sits as: 8-bit MCU -> PIC microcontroller -> Microchip MCU portfolio -> embedded semiconductor. The 'F' suffix denotes Flash program memory, 'I' denotes the industrial temperature grade (-40C to +85C), and 'ML' is the QFN-44 package code. Key features include 12KB (6K x 16) of Flash program memory, 640 bytes of data RAM, 256 bytes of EEPROM, a 10-bit ADC with up to 8 channels, and a dedicated motor-control PWM kernel with Power Control PWM (PCPWM) modules, a 16-bit Capture/Compare/PWM block, and quadrature encoder interfaces. Additional peripherals include two USART modules, an MSSP (SPI/I2C) port, an enhanced CCP module, and nanoWatt power management features. The QFN-44 exposed-pad package delivers a typical theta-JA around 24 C/W when properly soldered to a thermal land, supporting continuous operation at 40 MHz with full peripheral activity. Typical applications include single-phase induction motor drives (fans, pumps, compressors), brushless DC (BLDC) and switched-reluctance motor control, white-goods appliances (washing machines, refrigerators, range hoods), industrial HVAC blowers, and sensor-conditioned IoT edge nodes. The integrated motor-control kernel eliminates the need for an external DSP or FPGA for sinusoidal commutation and field-oriented control entry-level designs. Design consideration: the QFN-44 exposed pad MUST be soldered to a thermal land on the PCB (Microchip TB040/TC040 thermal pattern recommended) to meet the rated thermal performance; otherwise the die will derate under sustained 40 MHz operation. Use the MPLAB X IDE with the XC8 compiler and configure the ICD3/ICD4 or PICkit 4 for in-circuit debugging via the ICSP header. For drop-in migration to PIC18F4431 or PIC18F2439 parts, verify the peripheral map against the target datasheet.

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PIC18F4439T-I/PT

PIC18F4439T-I/PT - 8-bit MCU 40MHz 12KB Flash 44-TQFP | Microchip

The Microchip Technology PIC18F4439T-I/PT is an 8-bit PIC18F-series enhanced Flash microcontroller (MCU) running up to 40 MHz, with 12 KB of program Flash (6K x 16 words), 640 bytes of RAM, and 44 pins housed in a 44-TQFP (10x10 mm) surface-mount package supplied on tape and reel. Operating voltage is 4.2 V to 5.5 V with industrial -40C to +85C temperature grade, and the silicon integrates 36 I/O lines plus on-chip peripherals such as a 10-bit ADC, timers, PWM, USART, and nanoWatt power-management technology. An 8-bit PIC18 microcontroller is a Harvard-architecture RISC CPU that executes one instruction per clock cycle (except branches), running from internal Flash and offering flexible peripheral integration for embedded control. Within the broader semiconductor taxonomy, the PIC18F4439 belongs to the PIC18F family of enhanced Flash MCUs, which sits in the PIC microcontroller hierarchy (PIC10/12/16/18/24/32) and ultimately in the microcontroller category of integrated circuits used for embedded system design. Key features include 12 KB Flash program memory, 640 bytes RAM, 10-bit A/D converter, 36 digital I/O pins, 40 MHz max CPU clock (10 MIPS instruction throughput), wide 4.2-5.5 V supply range, and nanoWatt Technology for reduced active and sleep currents. Peripherals include multiple timers with Power Control PWM (PCPWM), capture/compare/PWM modules, USART, SSP/SPI/I2C, and on-chip EEPROM emulation - features that distinguish it from simpler PIC16 devices and make it suitable for closed-loop control. Architecturally, the PIC18F4439 adds the enhanced instruction set of the PIC18 family (16-bit instructions, linear memory map, hardware multiplier) and includes a 14-bit instruction width optimized for C-compiled code via MPLAB XC8. Power Control PWM is a key differentiator: it provides dedicated hardware for variable-frequency drives and three-phase motor commutation, eliminating the software overhead typical of general-purpose PWM modules. Typical applications include motor control (BLDC, PMSM, AC induction), industrial automation, automotive body and powertrain subsystems, sensor-conditioning front ends, and consumer appliance control. When designing with this device, confirm that the 44-TQFP footprint, I/O count, and PWM channel configuration match the target board - the PIC18F4439 is pin-compatible with several PIC18F4xxx siblings and many newer PIC18F-K parts in the same TQFP-44 land pattern. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone, helping engineers compare PIC18F4439T-I/PT against modern PIC18F-K and dsPIC33F motor-control parts side by side.

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PIC18F4450-I/P

PIC18F4450-I/P - 8-bit 48MHz 16KB Flash USB MCU | Microchip

The Microchip Technology PIC18F4450-I/P is an 8-bit RISC microcontroller from the PIC18F family that integrates a Full-Speed USB 2.0 (12 Mbit/s) transceiver and 16 KB of enhanced Flash program memory in a 40-pin PDIP through-hole package. Operating at up to 48 MHz system clock from a 4.2 V to 5.5 V supply, the device delivers approximately 16 MIPS throughput and combines a 10-bit ADC with up to 13 channels, a USART, MSSP (SPI/I2C), nanoWatt power management, and a 35-pin I/O complement. What is a PIC18F microcontroller? PIC18F is Microchip's enhanced 8-bit PIC microcontroller family, positioned between the baseline PIC16 and the 16-bit dsPIC families in Microchip's portfolio. These parts share a RISC Harvard architecture, a unified instruction set, and a powerful peripheral set, making them ideal for embedded control applications that require deterministic interrupt response, low power, and easy migration between pin counts. The 4450 sub-family specifically adds an on-chip USB 2.0 Full-Speed transceiver and is targeted at applications such as human-interface devices, USB-to-UART bridges, and embedded hosts that previously required an external USB controller. Key features include 16 KB (8K x 16) Flash program memory, 768 bytes of RAM, 256 bytes of EEPROM, 34 digital I/O pins, 13 10-bit ADC channels, two 8-bit timers and three 16-bit timers, a Capture/Compare/PWM module, hardware USB 2.0 Full-Speed with internal pull-up resistor, and nanoWatt power-saving modes with idle and sleep states drawing only microamps. The 40-pin PDIP (0.600 inch) package allows hand-soldering, breadboarding, and socketed prototypes. The architecture uses an 8-bit data path with a 16-bit instruction word and a hardware multiplier for single-cycle 8x8 multiplication. The integrated USB SIE handles bus enumeration, bulk/interrupt/isochronous endpoints, and suspend/resume signaling, eliminating external transceivers. On-chip peripherals are prioritized via a vectored interrupt controller with two priority levels, allowing deterministic real-time response for USB traffic and motor-control PWM. Typical applications include USB human-interface devices (HID mice, keyboards, custom peripherals), USB-to-serial converter dongles, low-cost data loggers, sensor read-out boards, industrial control panels, and educational/training boards where the through-hole package simplifies lab work. When designing with the PIC18F4450, supply decoupling of at least 100 nF near each power pin and a 10 uF bulk capacitor on VDD is essential, and the USB D+/D- traces must be 90 ohm differential and length-matched. The internal 48 MHz PLL is enabled by configuration fuses and requires the HS or HSPLL oscillator mode for USB operation; an external 4, 8, 12, 16, 20, 24, or 48 MHz crystal with appropriate load capacitors must be selected per the oscillator configuration fuse settings. This page synthesizes distributor pricing, drop-in same-package alternatives, comparison parameters, and practical design notes not collated on a single distributor product page.

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PIC18F4450T-I/ML

PIC18F4450T-I/ML - 48MHz 8-bit USB MCU, 16KB Flash | Microchip

The Microchip Technology PIC18F4450T-I/ML is an 8-bit PIC18F-family RISC microcontroller with integrated Full-Speed USB 2.0, 16KB of Enhanced Flash program memory and 768 bytes of RAM, supplied in a 44-pin QFN (8x8 mm) package with exposed thermal pad. It executes up to 16 MIPS from a 48MHz internal clock and operates from 2.0V to 5.5V across the industrial -40C to +85C temperature range, supporting both 5V and 3.3V system designs. The 'T' suffix denotes tape-and-reel packaging while the 'I' indicates the industrial temperature grade, and 'ML' identifies the QFN-44 (8x8) package. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash/ROM), working memory (RAM), and programmable peripherals into one package. PIC18F devices belong to Microchip's enhanced 8-bit architecture family, sitting above the baseline PIC16 line and below the 16-bit dsPIC and 32-bit PIC32 families. The PIC18F4450 specifically targets USB-aware embedded designs by combining a Full-Speed USB 2.0 peripheral with nanoWatt power management, making it part of Microchip's "peripheral-rich" legacy USB portfolio. Key features include 16KB Flash organized as 8K x 16 words, 768 bytes of RAM, 256 bytes of EEPROM, a 10-bit ADC with up to 13 input channels, two analog comparators, a Capture/Compare/PWM (CCP) module and an Enhanced CCP module, two USARTs, a Master I2C/SPI port, 34 digital I/O lines, and four timer modules. The integrated Full-Speed USB 2.0 SIE supports 1.5 Mbps Low-Speed and 12 Mbps Full-Speed operation with on-chip transceiver, eliminating the need for external USB PHY components. Architecturally the PIC18F4450 uses an enhanced Harvard RISC core with 16-bit instructions and 8-bit data path, hardware multiplier, 31-level hardware stack, and 75 instructions including multiply and divide. The nanoWatt technology provides multiple power-managed modes (Run, Idle, Sleep, and deep Sleep variants) that reduce quiescent current to microampere levels - a critical feature for battery-powered or USB-suspended devices. The Phase-Locked Loop allows the 48MHz USB clock to be derived from a low-frequency crystal. Typical applications include USB-to-UART bridges, HID-class peripherals (keyboards, mice, game controllers), USB sensors and data loggers, industrial USB instrumentation, bootloader and firmware-update hosts, and point-of-sale terminals. The combination of USB, ADC, and PWM makes it suitable for motor-control USB dongles, lab data acquisition front-ends, and educational embedded platforms that require a direct PC connection. When designing with this part, mind the QFN-44 exposed-pad requirement: the central pad must be soldered to a properly sized ground copper pour for thermal and electrical performance. Use Microchip's MPLAB X IDE and the XC8 compiler for firmware development; the USB stack is provided in the Microchip Libraries for Applications (MLA) framework. Migrating to newer designs may favor PIC18F46J50 or PIC18F4550 families for additional memory, but the PIC18F4450 remains a low-cost Full-Speed USB solution for cost-sensitive legacy products.

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PIC18F4450T-I/PT

PIC18F4450T-I/PT - 48MHz 8-bit USB MCU 16KB Flash | Microchip

The Microchip Technology PIC18F4450T-I/PT is an 8-bit PIC microcontroller from the PIC18F family, featuring a 48MHz CPU core (12 MIPS), 16KB of enhanced flash program memory (8K x 16 words), and a Full-Speed USB 2.0 peripheral, all housed in a 44-pin TQFP package. This tape-and-reel packaged variant is engineered for embedded designs that require a low-cost USB device, A/D conversion, and the rich peripheral set Microchip's PIC18 architecture is known for. The 'T' suffix denotes tape and reel packaging while the 'I' indicates the industrial -40C to +85C temperature range. What is a PIC18F microcontroller? The PIC18F is Microchip Technology's high-performance 8-bit PIC microcontroller family, positioned above the PIC16F series in performance and below the PIC24/dsPIC 16-bit families. PIC18F devices follow the standard PIC taxonomy (microcontroller -> embedded controller -> semiconductor) and integrate flash memory, SRAM, EEPROM, A/D converters, and communication peripherals on a single CMOS die. The 4450 specifically targets USB-enabled human-interface and embedded-host-bridge designs where a full-speed (12 Mbps) USB device port replaces an external transceiver PHY. Key features include an integrated Full-Speed USB 2.0 device controller with on-chip transceiver, 10-bit A/D converter with up to 13 input channels, two 8-bit and three 16-bit timers, two capture/compare/PWM modules, an Enhanced USART, MSSP (SPI/I2C), nanoWatt power management, and a 13-channel 10-bit ADC. The 44-pin TQFP package exposes 34 general-purpose I/O pins. The 5V operating range (4.2V to 5.5V) makes the part suitable for industrial and legacy 5V systems. Program memory is in-circuit serial programmable (ICSP) via two pins, supporting field updates without removing the part from the board. Architecture-wise, the PIC18F4450 employs a Harvard RISC core with separate program and data buses, a hardware multiplier, and an 8-level deep hardware stack, allowing deterministic interrupt latency typical of PIC microcontrollers. The nanoWatt technology includes multiple idle and sleep modes that drop core current to microampere levels, with peripheral activity managed by independent clock gating. The USB SIE (Serial Interface Engine) handles the USB protocol in hardware, offloading packet framing, CRC, and endpoint management from the CPU. Typical applications include USB HID peripherals (keyboards, mice, custom input devices), USB-to-UART bridges, low-cost data loggers with analog sensor inputs, industrial control front-ends with Modbus RTU via RS-485, and consumer electronics with touch or capacitive sensing. The combination of USB, ADC, and 5V tolerance makes it a drop-in upgrade for legacy 5V systems adding modern connectivity. When designing, ensure the VUSB pin is decoupled with a 220nF capacitor as recommended in the Microchip datasheet and that the D+/D- traces are routed as a 90-ohm differential pair. Firmware must initialize the USB PLL and oscillator configuration registers before the SIE will enumerate; review Microchip's USB framework documentation for ready-made HID, CDC, and vendor-class stacks. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes that complement the Microchip datasheet rather than simply restating it.

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PIC18F4455-I/PT

PIC18F4455-I/PT - 8-Bit 48MHz 24KB USB MCU 44-TQFP | Microchip

The Microchip Technology PIC18F4455-I/PT is an 8-bit PIC18 enhanced Flash microcontroller with integrated Full-Speed USB 2.0, operating at up to 48 MHz (12 MIPS) and housed in a 44-pin TQFP (10x10 mm) package. It features 24 KB of Flash program memory (12K x 16), 2048 bytes of RAM, and 256 bytes of EEPROM. The device operates from 2.0 V to 5.5 V and provides 36 digital I/O pins with peripheral pin select flexibility. What is a PIC18 microcontroller? PIC18 is Microchip's high-performance 8-bit family built on a RISC architecture that delivers up to 16 MIPS performance and uses an enhanced instruction set including a C-friendly flat memory model. Within the broader taxonomy, PIC18F devices sit between baseline PIC10/12/16 families and PIC24/dsPIC16-bit families, offering a balance of low cost, low power (nanoWatt technology), and rich peripherals including USB, CAN, and ADC. They are widely used in consumer, industrial, and automotive embedded applications where 8-bit simplicity and proven toolchains are preferred over 32-bit complexity. The PIC18F4455 specifically adds an integrated Full-Speed USB 2.0 transceiver (12 Mbit/s), supporting both low-speed and full-speed USB operation without external transceivers. The device includes three serial communication ports: USB, I2C, SPI (up to 10 Mbit/s), and an asynchronous EUSART with LIN master/slave capability. On-chip peripherals include a 10-bit ADC with up to 13 channels, multiple 8-bit and 16-bit timers, and nanoWatt power management with multiple low-power sleep modes. Architecturally, the PIC18F4455 uses a Harvard architecture with separate program and data buses, an 8-bit ALU, and a hardware multiply unit supporting 8x8 single-cycle multiplication. The integrated SIE (Serial Interface Engine) handles USB protocol automatically, dramatically simplifying USB device firmware. With 24 KB Flash and 2 KB RAM, the device comfortably fits full-speed USB stacks such as Microchip's Microchip Libraries for Applications (MLA) and supports CDC, HID, and vendor-class USB implementations. Typical applications include USB-based sensor interfaces, HID peripherals (keyboards, mice, game controllers), USB-to-UART bridges, industrial data loggers with USB connectivity, embedded web servers (via CDC-ECM or RNDIS), and automotive LIN bus gateway nodes. The wide 2.0 V to 5.5 V supply range and nanoWatt sleep modes make the device attractive for battery-powered USB devices. When designing with the PIC18F4455-I/PT, pay attention to the USB D+/D- pin routing - the differential pair must be 90 ohm impedance-matched, length-matched, and isolated from noisy digital traces. Use a 20 MHz external crystal with the on-chip PLL to derive the 48 MHz USB clock; 48 MHz is mandatory for Full-Speed USB operation. Adequate decoupling (100 nF plus 4.7 uF bulk) should be placed close to VDD/VSS pairs. This page consolidates distributor pricing, drop-in PIC18F alternatives in the same TQFP-44 footprint, and practical USB-embedded design considerations not found in the manufacturer datasheet alone, enabling faster BOM validation and supply-chain risk assessment for production engineering teams.

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PIC18F4455T-I/PT

PIC18F4455T-I/PT - 48MHz 8-bit FS-USB MCU 24KB Flash | Microchip

The Microchip Technology PIC18F4455T-I/PT is an 8-bit PIC18 family microcontroller featuring an integrated Full-Speed USB 2.0 transceiver, 24KB of enhanced flash program memory and 2048 bytes of RAM, running at up to 48 MHz (12 MIPS) from a 4.2 V to 5.5 V supply in a 44-pin TQFP (10x10 mm) package. The "/PT" suffix denotes the TQFP package while the "/T" indicates tape-and-reel packaging and "I" indicates the industrial -40C to +85C temperature grade. A microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory (typically flash), working RAM, and a rich set of peripheral interfaces into one IC. Within the broader semiconductor taxonomy, an 8-bit MCU sits inside the microcontroller category, which itself belongs to integrated circuits and finally to semiconductors. PIC18 microcontrollers use Microchip's enhanced Harvard RISC architecture with 16-bit wide instructions that execute in four oscillator cycles, providing higher code density and throughput than baseline PIC microcontrollers. Key features include 24KB (12K x 16) flash program memory, 2048 bytes of RAM, a 10-bit ADC with up to 13 channels, two 8-bit and three 16-bit timers, two capture/compare/PWM modules, an enhanced USART (LIN-capable), an MSSP supporting both I2C and SPI up to 10 Mbit/s, and an integrated USB 2.0 full-speed transceiver (12 Mbit/s) with on-chip transceivers and 1.5 kB of dedicated endpoint RAM. nanoWatt power-management technology provides multiple idle and sleep modes for low-power embedded designs. The device uses a 5V-tolerant CMOS process, includes an 8x8 hardware multiply, a 32 kHz secondary oscillator for real-time-clock operation, and provides two comparators plus a programmable reference. The integrated full-speed USB transceiver removes the need for external USB transceivers, simplifying USB peripherals such as HID, CDC, vendor-class devices, and embedded hosts. Typical applications include USB peripherals (keyboards, mice, custom HID devices, USB-to-UART bridges), low-cost instrumentation with USB connectivity, embedded data loggers, sensor front-ends with USB data export, LIN slave nodes in automotive body networks, industrial control with USB diagnostics, and educational/development platforms that benefit from the same PIC18 instruction set used across the entire Microchip PIC family. When designing with this device, ensure the VUSB pin is decoupled with the manufacturer-recommended 220 nF capacitor and that the USB DP/DM traces are routed as a 90-ohm differential pair. Always configure the CONFIG fuses (oscillator, WDT, brown-out, low-voltage programming) before code download to lock the device into the intended operating mode. This page synthesizes distributor pricing, pin-compatible drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

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PIC18F4458-I/ML

PIC18F4458-I/ML - 8-bit 48MHz USB MCU 24KB Flash 44-QFN | Microchip

The Microchip PIC18F4458-I/ML is an 8-bit PIC18 microcontroller running up to 48 MHz with 24 KB Flash, 2 KB SRAM, and 256 Bytes EEPROM, integrated Full-Speed USB 2.0, a 12-bit ADC, and nanoWatt power management, housed in a 44-pin QFN (8x8 mm) package. What is an 8-bit MCU with integrated USB? An 8-bit microcontroller is a single-chip computer built around an 8-bit data path, optimized for deterministic control, low power, and small code footprint. PIC18F devices extend the baseline PIC16 architecture with a 16-bit instruction word, C-friendly addressing, and richer peripherals. Within the broader taxonomy, PIC18 belongs to the microcontroller -> embedded controller -> semiconductor family, and the 44-QFN "/ML" suffix positions it as the surface-mount variant of the PIC18F4458 family (others include /PT TQFP and /P PDIP). Key features include 24 KB (12K x 16) of enhanced Flash with self-programming support, 2 KB SRAM, 256 Bytes EEPROM, 35 digital I/O pins, an internal 31 kHz to 8 MHz oscillator with PLL for 48 MHz operation, a 12-bit A/D converter with up to 13 input channels, two analog comparators, two CCP modules plus an enhanced CCP, three serial ports (FS-USB 12 Mbit/s, I2C, SPI up to 10 Mbit/s), and a USART with LIN support. The nanoWatt feature set provides idle, sleep, and low-power Timer1 oscillator modes that let the device draw microamps in standby. Architecturally, the PIC18F4458 uses an enhanced Harvard bus with a 16-bit flash program word and an 8-bit data path, enabling C-friendly operation while keeping interrupts and peripheral triggers fully deterministic. The integrated USB SIE handles Full-Speed (12 Mbit/s) USB 2.0 without an external transceiver or external oscillator when paired with the internal 48 MHz PLL, dramatically reducing BOM cost for USB peripherals. The 12-bit ADC is paired with a 5-channel input mux for mixed analog/digital sensor nodes. Typical applications include Full-Speed USB human-interface devices (HID keyboards, mice, custom joysticks), USB-to-UART bridges, low-cost data loggers with analog sensors, industrial control panels, and consumer accessories needing a wired connection to PCs or chargers. The 24 KB Flash comfortably fits USB stack and CDC/HID class drivers alongside application logic. When designing with this device, follow the recommended USB bus-power decoupling (100 nF high-frequency + 4.7 uF bulk) and place the VBUS sense resistor within 10 mm of the D+ line. Note that part number suffix /ML denotes the 44-pin QFN package; the /PT variant is TQFP-44 and /P is PDIP-40 - all three share the same silicon so firmware is portable, but PCB footprints and pinouts differ. This page synthesizes distributor pricing, same-brand drop-in alternatives (PIC18F4455, PIC18F4450), cross-brand parametric equivalents, and practical design notes not found in the manufacturer datasheet alone.

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PIC18F4458-I/P

PIC18F4458-I/P - 8-bit 48MHz USB MCU 24KB Flash | Microchip

The Microchip Technology PIC18F4458-I/P is an 8-bit PIC18F-family microcontroller with integrated Full-Speed USB 2.0, delivering 48 MIPS performance from a 48 MHz internal oscillator in a 40-pin PDIP through-hole package. The device integrates 24 KB of Flash program memory (12K x 16 words), 2 KB of SRAM, and 256 bytes of EEPROM, paired with a 12-bit A/D converter and nanoWatt power management for low-power embedded designs. Background: An 8-bit microcontroller (MCU) is a single-chip computer optimized for byte-oriented control tasks in embedded systems. Within the MCU taxonomy, PIC18F devices sit above base-line PIC16 parts, providing enhanced 16-bit wide instruction paths, hardware multiplier, C-friendly architecture, and richer peripherals while retaining the classic PIC RISC design. The PIC18F4458 belongs to the PIC18F4550 family of Full-Speed USB microcontrollers, distinguished from PIC18F-K-series parts by its USB SIE and nanoWatt features aimed at connected, battery-aware products. Key differentiating features include a USB 2.0 Full-Speed (12 Mbit/s) Serial Interface Engine, three independent serial ports (USB, I2C, SPI up to 10 Mbit/s), an EUSART for asynchronous/synchronous RS-232/RS-485 communications, a 10-channel 12-bit ADC, two analog comparators, and a hardware master/slave PSP. The device supports operating voltages of 2.0V to 5.5V and provides self-programmability for bootloader firmware updates. The architecture combines a Harvard RISC core with a 16-bit instruction word and 8-bit data path, an 8 x 8 hardware multiplier for math acceleration, and a 31-level hardware stack that supports high-level language compilers (MPLAB C18). nanoWatt features include multiple idle/sleep modes, ultra-low-power wake-up on change, and a real-time clock with dedicated low-power oscillator. Typical applications include Full-Speed USB peripherals (HID, CDC, vendor-class), industrial sensor hubs, low-power data loggers, and embedded control nodes requiring USB connectivity. Design considerations include provision for a 20 MHz external crystal when USB accuracy is required, decoupling on AVDD/VUSB rails, and MCLR pull-up for reliable reset behavior.

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PIC18F4458-I/PT

PIC18F4458-I/PT - 8-Bit 48MHz USB MCU 24KB Flash | Microchip

The Microchip Technology PIC18F4458-I/PT is an 8-bit high-performance PIC18F microcontroller with 24KB Flash, 2KB RAM, and 256 bytes of EEPROM, housed in a 44-pin TQFP (10x10 mm) package. It runs up to 48 MHz from an integrated oscillator with 4x PLL, integrates a Full-Speed USB 2.0 (12 Mbit/s) transceiver with on-chip PHY, a 12-bit ADC, and three serial peripherals (USB, I²C, SPI up to 10 Mbit/s). The "-I" suffix denotes the industrial temperature range of -40C to +85C. A microcontroller (MCU) is a single-chip computer containing a CPU core, program memory (Flash), working memory (RAM), non-volatile data memory (EEPROM), and programmable I/O peripherals. PIC18F MCUs use Microchip's enhanced Harvard architecture with a 16-bit instruction word and 8-bit data path, belonging to the 8-bit microcontroller family in the broader category of embedded processors / microcontrollers / semiconductors. The PIC18F4458 specifically sits in the high-performance Flash USB family, optimized for low-power (nanoWatt) and connectivity applications that require precision analog. Key features include 35 digital I/O pins, a 10-channel 12-bit ADC, Capture/Compare/PWM modules, two 8-bit timers and three 16-bit timers, an enhanced USART, and nanoWatt power management for sleep currents in the microampere range. The internal 16 MHz RC oscillator can be combined with the 4x PLL to deliver the full 48 MHz instruction rate, eliminating the need for an external crystal in many designs. Hardware multipliers and a hardware 8x8 multiply engine accelerate DSP-like routines. The PIC18F4458 uses an enhanced Harvard architecture with separate program and data buses, enabling single-cycle instruction fetch from Flash. The integrated USB 2.0 Full-Speed transceiver, with on-chip 3.3V regulator and pull-up resistors, simplifies USB device designs and removes several external components typical of older MCUs. With 24KB self-programmable Flash, designers can implement In-Circuit Serial Programming (ICSP) and runtime firmware updates. Typical applications include USB peripherals (HID, CDC, custom classes), industrial sensors with USB diagnostics, data loggers, USB-to-UART bridges, low-cost USB measurement instruments, and consumer devices requiring 12-bit precision analog. The combination of USB, ADC, and PWM makes it well-suited to motor-control front ends, lighting controllers, and embedded human-interface devices. When designing with the PIC18F4458, observe the recommended decoupling (100 nF + 10 uF near VDD/VSS) and follow Microchip AN956 (migration between PIC18F4550 family members). The USB D+/D- lines should be routed with 90 ohm differential impedance; the VUSB pin must be decoupled with a 220 nF capacitor. For lowest power, use the nanoWatt sleep modes with wake-on-interrupt. This page synthesizes distributor pricing, drop-in alternatives, design notes, and pinout diagrams not found in the manufacturer datasheet, giving engineers a faster path to a USB-enabled 8-bit design than searching spec sheets individually.

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PIC18F4458T-I/ML

PIC18F4458T-I/ML - 48MHz 8-bit USB MCU, 24KB Flash | Microchip

The Microchip Technology PIC18F4458T-I/ML is an 8-bit RISC microcontroller built on the PIC18 enhanced core, operating at up to 48 MHz and packaged in a 44-pin QFN (ML) 8x8 mm housing with nanoWatt Technology for low-power designs. The device integrates 24 KB of Flash program memory (12K x 16), 2 KB of SRAM data memory, and 256 bytes of EEPROM for non-volatile parameter storage. Connectivity is centered on a full-speed USB 2.0 (12 Mbit/s) interface, augmented by I2C, SPI (up to 10 Mbit/s) and an asynchronous enhanced USART. An 8-bit microcontroller is a programmable semiconductor that executes instructions from on-chip program memory while exposing digital and analog peripherals through its I/O pins. The PIC18 family extends this concept with a 16-bit instruction word, hardware multiplier, and C-friendly architecture. Within the broader hierarchy, the PIC18F4458 sits as a microcontroller -> MCU -> embedded processor -> semiconductor, and is optimized for cost-sensitive USB-enabled embedded systems. Key differentiating features include a 10-bit ADC with up to 13 channels, two analog comparators, a 10-bit Pulse-Width Modulation (PWM) module, and nanoWatt power management that drops Iq to microampere levels in sleep. The device supports In-Circuit Serial Programming (ICSP) via two pins, enabling field upgrades without bootloader code space. With 36 digital I/O pins and supply voltage range of 4.2 V to 5.5 V, it accommodates both 5 V industrial logic and USB bus-powered designs. Architecturally, the PIC18F4458 employs a Harvard architecture with separate program and data buses, an 8-bit ALU with hardware multiply, and a 16-bit instruction set. The USB SIE (Serial Interface Engine) is hardware-implemented, offloading bit-level USB protocol processing from the CPU and leaving MIPS for application code. Internal oscillator modes reduce BOM count, while the standard 44-pin QFN package supports surface-mount manufacturing and provides a thermal pad for improved dissipation. Typical applications include USB human-interface devices (HID) such as keyboards, mice and game controllers, USB-to-serial bridges, industrial data loggers with USB connectivity, low-cost instrumentation front-ends, and embedded educational platforms. The combination of USB, generous peripherals and PIC ecosystem maturity makes this part a common choice for legacy USB designs and educational lab kits. When designing with this device, ensure the USB D+/D- trace impedance is controlled to 90 ohms differential and that the VUSB pin has the recommended 220 nF decoupling network. The internal USB pull-up resistor can be software-enabled to eliminate an external component. For low-power designs, leverage nanoWatt sleep modes and the on-chip low-power timer (Timer1) for periodic wake-up. This page synthesizes verified distributor pricing, drop-in alternatives within the same PIC18F4458 family, and practical design notes not aggregated in a single document by the manufacturer. It is intended to accelerate part selection, BOM validation, and footprint reuse for USB-capable embedded designs.

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PIC18F448-E/L

PIC18F448-E/L - 8-Bit 40MHz MCU 16KB Flash CAN 44-PLCC | Microchip

The Microchip Technology PIC18F448-E/L is an 8-bit PIC18 microcontroller featuring a 40 MHz CPU core, 16 KB of enhanced FLASH program memory, 768 bytes of RAM, and 256 bytes of EEPROM, housed in a 44-pin PLCC package. It integrates an on-chip ECAN (Enhanced Controller Area Network) module, making it a member of the PIC18Fxx8 family designed for automotive and industrial networking applications. The '-E' temperature grade denotes an extended industrial operating range of -40C to +125C, while the '/L' suffix indicates the 44-lead PLCC package with J-leads suitable for socketed or through-hole-style surface mounting. An 8-bit microcontroller (MCU) is a programmable logic device that executes instructions fetched from on-chip program memory and operates on data stored in registers and SRAM. In the embedded hierarchy, the PIC18F448 belongs to the PIC microcontroller family -> 8-bit MCU -> microcontroller -> programmable logic -> semiconductor. The PIC18 line uses a 16-bit modified Harvard architecture with an enhanced instruction set, allowing single-cycle execution of most operations and C-compiler-friendly orthogonal register handling. This makes PIC18F MCUs a bridge between legacy 8-bit designs and the 16-bit dsPIC platform. Key features of the PIC18F448-E/L include 34 digital I/O pins, a 10-bit ADC with up to 8 input channels, two enhanced CCP modules, a USART with RS-485 support, MSSP (SPI/I2C), two analog comparators, and a hardware ECAN module compliant with CAN 2.0B active. The 40 MHz oscillator (10 MIPS instruction throughput) combined with the integrated CAN peripheral reduces external component count for in-vehicle network nodes and industrial fieldbus implementations. With FLASH, EEPROM, and SRAM all internal to the die, firmware upgrades in the field are achievable via ICSP (In-Circuit Serial Programming). The PIC18F448 architecture uses Microchip's standard PIC18 core with 16-bit instructions and 8-bit data paths, a hardware multiplier, and a 32-level stack. The ECAN peripheral includes acceptance filters, masks, and buffers that offload message filtering from the CPU, enabling deterministic latency in CAN networks. The 10-bit ADC achieves a typical throughput of approximately 30 ksps with acquisition time controlled by software, supporting sensor monitoring and feedback loops. Typical applications for the PIC18F448-E/L include CAN bus nodes in automotive body and chassis ECUs, industrial automation (sensor hubs, motor controllers, machine tool interfaces), HVAC control boards, building automation controllers (BACnet/LonWorks bridges), medical instrumentation with CAN interfaces, and embedded data acquisition front-ends. The extended temperature grade enables deployment in under-hood automotive and outdoor industrial enclosures. When designing with this device, ensure that the ECAN bus termination (typically 120 ohm at each end of the bus segment) and a proper transceiver IC (such as MCP2551 or MCP2561) are placed between the MCU's CAN_TX/CAN_RX pins and the bus. Adequate decoupling (100 nF ceramic plus bulk) near VDD/AVDD and proper oscillator layout are essential for the CAN module to meet bit-timing jitter requirements. This page synthesizes distributor pricing, drop-in PIC18F alternatives, and practical design notes not found in the manufacturer datasheet alone, helping engineers verify fit and source replacement parts for the PIC18F448-E/L.

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PIC18F448-E/P

PIC18F448-E/P - 8-bit MCU 16KB Flash CAN 40-DIP | Microchip

The Microchip PIC18F448-E/P is an 8-bit PIC18F series microcontroller featuring a 40MHz core clock, 16KB of Enhanced Flash program memory organized as 8K x 16, 768 bytes of SRAM, and 256 bytes of EEPROM, all integrated in a 40-pin PDIP (DIP-40) through-hole package. The "-E" suffix indicates the Extended (Industrial) operating temperature range of -40°C to +125°C, and the "/P" suffix denotes the PDIP package. According to the manufacturer datasheet, this device provides an integrated CAN (Controller Area Network) module and is part of the 28/40/44-pin High-Performance Enhanced Flash MCU family. An 8-bit microcontroller (MCU) is a programmable single-chip computer that processes data in 8-bit words and integrates a CPU, non-volatile program memory, volatile data memory, and programmable peripherals. PIC18F parts sit in the PIC18 family, which is Microchip's enhanced 8-bit architecture built on a modified Harvard core with hardware multiplier and 16-bit instruction word, and the broader PIC (Peripheral Interface Controller) family above it is one of the foundational microcontroller lineages in modern embedded design. Key features include 25 MIPS peak throughput at 40 MHz, an internal 8 MHz oscillator with PLL options, 10-bit ADC up to 8 channels, a USART with LIN support, MSSP for SPI/I2C, two analog comparators, four timer modules, and a 10-channel PWM. The integrated ECAN module supports CAN 2.0B with eight transmit/receive mailboxes, enabling robust automotive and industrial networking without an external CAN controller. The architecture combines the standard PIC18 instruction set with a hardware multiply routine in 8 cycles, a 31-level hardware stack, and a 16-bit wide program memory bus that lets the CPU fetch data from program memory in one cycle. The device has 36 digital I/O pins and on-chip debug via ICD, and runs from 4.2 V to 5.5 V (typical 5 V supply), reflecting its industrial-grade origin. Typical applications include automotive body and chassis CAN nodes, industrial CAN-based sensor and actuator nodes, building automation gateways, HVAC controllers, and embedded HMI panels that benefit from the 40-pin through-hole format for prototype and retrofit designs. When designing with this device, ensure your compiler selection migrates cleanly because the -E suffix marks the Extended temperature grade; the standard PIC18F448-I/P remains the commercial-grade alternative and is generally interchangeable electrically but should be selected against your ambient derating. This page consolidates distributor pricing, drop-in same-package alternatives, and engineering design notes drawn from the manufacturer datasheet, so you can verify a board revision without re-deriving every spec.

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PIC18F448-E/PT

PIC18F448-E/PT - 8-Bit 40MHz 16KB Flash MCU w/ CAN | Microchip

The Microchip Technology PIC18F448-E/PT is an 8-bit RISC microcontroller from the PIC18F family integrating a Full CAN 2.0B module, 16KB (8K x 16) of enhanced Flash program memory, 768 bytes of RAM and 256 bytes of EEPROM in a 44-pin TQFP (10x10 mm) package with 34 digital I/O pins. It executes a 40 MHz maximum clock (10 MIPS instruction throughput) and integrates dedicated peripherals for embedded networking: 8-channel 10-bit ADC, 5 PWM channels, USART, MSSP (SPI/I2C), Parallel Slave Port and an In-Circuit Debugger interface. The 'E' suffix indicates the Extended (automotive) temperature grade of -40C to +125C, while the 'PT' package designator denotes the TQFP-44 (10x10 mm, 1.0 mm height, MS-026). A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory, working RAM, data EEPROM and peripheral interfaces on one silicon die. The PIC18F is Microchip's enhanced 8-bit architecture that adds 16-bit instructions, hardware multiply, a 31-level stack and linear data memory addressing to the classic PIC baseline, enabling C compilers (MPLAB XC8) and complex protocol stacks such as CANopen, J1939 and DeviceNet to run efficiently. The CAN module makes the PIC18F448 especially well-suited to in-vehicle networks, industrial fieldbus nodes and any distributed control system requiring deterministic multi-drop serial communication. Key features include Full CAN 2.0B active/passive compliance with 3 transmit buffers, 2 receive buffers, 6 acceptance filters and 2 filter masks, supporting bit rates up to 1 Mbps. The 8-channel 10-bit ADC delivers up to 100 ksps conversion, and the 5 PWM outputs (10-bit resolution) support motor-control and lighting. Self-programming allows field firmware updates through the ICSP interface, and the ICD (In-Circuit Debugger) pins enable real-time emulation with the MPLAB ICD 5. Five timer modules provide Capture/Compare/PWM functionality for event timing and waveform generation. Typical applications include CAN nodes in automotive body and chassis ECUs, industrial sensor hubs on CANopen or DeviceNet, building automation gateways, HVAC control boards and motor-control front-ends where deterministic serial communication is required alongside general-purpose digital and analog I/O. The extended temperature grade enables under-hood and outdoor deployments where commercial-grade parts are unsuitable. The 16KB Flash is ample for protocol stacks plus application code in tightly written C. When designing with this device, note that the PIC18F448 has been succeeded by the PIC18F4480 (with 32KB Flash and 10-bit ADC improvements) and is itself a recommended replacement for the older PIC18F448-I/PT industrial grade variant. The TQFP-44 footprint is shared across the PIC18F248/258/448/458 family and several newer K-series parts, easing PCB reuse. Ensure the ICSP/ICD pins are routed to a 6-pin header for production programming and in-field firmware updates.

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PIC18F448-I/L

PIC18F448-I/L - 8-bit PIC MCU, 16KB Flash, CAN, 40MHz | Microchip

The Microchip Technology PIC18F448-I/L is a high-performance 8-bit PIC microcontroller featuring an enhanced RISC architecture with 16KB of Flash program memory, 768 bytes of SRAM, 256 bytes of EEPROM, an integrated CAN 2.0B module, and a maximum CPU clock of 40 MHz, all housed in a 44-pin PLCC package (L suffix). The part operates across an industrial temperature range of -40C to +85C and supports connectivity peripherals including CAN, I2C, SPI, and UART/USART, with up to 34 digital I/O pins. An 8-bit microcontroller is a single-chip computer built around an 8-bit data bus that executes one byte per instruction cycle, paired with a richer peripheral set than smaller 4-bit or 8-bit predecessors. The PIC18F family sits at the top of Microchip's legacy 8-bit portfolio, belonging to the broader category of microcontrollers -> microcontrollers (MCUs) -> microcontrollers and microprocessors -> semiconductors. Enhanced Flash variants add self-programmability, larger SRAM, and on-chip peripherals like CAN, USB, and 10-bit ADC, distinguishing them from baseline PIC16F parts. Key features of the PIC18F448-I/L include the integrated ECAN module (CAN 2.0B Active) for automotive and industrial networking, a 10-bit ADC up to 8 channels, capture/compare/PWM (CCP) modules for motor and lighting control, an internal RC oscillator with PLL support, and Microchip's nanoWatt power-managed sleep modes. These features make it well-suited for embedded nodes that require deterministic CAN communication alongside standard serial interfaces. Architecture-wise, the part uses a Harvard-based RISC core with 16-bit instructions and 8-bit data path, providing 75+ instructions, an 8x8 hardware multiplier, and a 32-level hardware stack. The integrated CAN module reduces BOM cost and PCB area versus external CAN controllers, which historically required a separate SPI/I2C-attached IC. Typical applications include automotive body control modules, industrial CAN sensor hubs, HVAC fan controllers, and standalone CAN bridge/gateway nodes in factory automation. The 40-pin I/O count and CAN peripheral also suit building automation fan-out devices and small appliances requiring fieldbus networking. A key design consideration is migrating from this part to the pin-compatible PIC18F458 (double the Flash, 32KB vs 16KB) for firmware headroom without PCB rework. Lifetime-buy planning is recommended - this part is marked OBSOLETE in distributor catalogs as of 2026-09-27 and inventory should be validated at order entry. This page synthesizes distributor stock, parametric alternatives in the PIC18Fxx8 family, and engineering notes compiled from Microchip datasheets and reference designs - content not found on any single distributor page.

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PIC18F448-I/P

PIC18F448-I/P - 8-bit 40MHz 16KB Flash MCU w/ CAN | Microchip

The Microchip Technology PIC18F448-I/P is a high-performance 8-bit PIC18-family CMOS Flash microcontroller with integrated CAN (Controller Area Network) peripheral, packaged in a 40-pin PDIP (DIP-40). It delivers up to 10 MIPS (40 MHz clock) and provides 16 KB of Flash program memory, 768 bytes of RAM, and 256 bytes of EEPROM. The part operates from 2.0 V to 5.5 V and offers 34 digital I/O pins plus a 10-bit A/D converter, making it well suited to automotive, industrial, and embedded-control designs that require on-chip CAN. What is a PIC18F microcontroller? The PIC18F is Microchip's enhanced 8-bit family built on a modified Harvard RISC architecture. PIC18F devices belong to the broader 8-bit microcontroller category, which sits under the embedded MCU hierarchy (microcontroller -> microcontroller IC -> semiconductor). The PIC18F instruction set uses 77 single-word instructions, so most instructions execute in one instruction cycle (4 clock periods), which is why a 40 MHz oscillator yields 10 MIPS throughput. Compared with base-line PIC16F parts, the PIC18F family adds higher program/data memory, larger register sets, and richer peripherals such as CAN, USB, and enhanced capture/compare modules. Key differentiating features of the PIC18F448 include on-chip ECAN-ready CAN module, 10-bit ADC with up to 8 channels, two capture/compare/PWM (CCP) modules plus an enhanced ECCP, two USART ports, MSSP (SPI/I2C), 10 MIPs throughput, and self-programmable Flash. The /I suffix in the part number indicates the industrial temperature range of -40 C to +85 C, and the /P indicates the PDIP-40 package. The PIC18F448 architecture combines a 16-bit-wide instruction word with an 8-bit data path, allowing single-cycle access to Flash while preserving byte-level peripheral operation. The integrated CAN engine supports CAN 2.0B active frames at up to 1 Mbps bit rate, providing hardware message acceptance filtering and interrupt-driven transmission. The Flash memory is qualified for at least 100,000 erase/write cycles and supports ICSP (In-Circuit Serial Programming) for production-line or field updates. Typical applications for the PIC18F448 include CAN nodes in automotive body and chassis electronics, industrial sensor nodes, building-automation nodes, low-end PLCs, and CAN bridges. The 34 I/O pins plus analog and serial peripherals cover most simple to moderately complex networked embedded designs without external glue logic. A key design consideration is supply decoupling. Place a 100 nF ceramic capacitor as close as possible to the VDD pin and a 10 uF bulk capacitor on the analog AVDD rail to keep ADC noise low. When the CAN bus is active, also respect the ISO 11898 transceiver layout guidance and use a dedicated CAN transceiver IC such as MCP2551. This page combines distributor pricing, drop-in alternatives, and practical design notes that are not bundled in any single distributor page.

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PIC18F448-I/PT

PIC18F448-I/PT - 8-bit MCU 16KB Flash 44-TQFP | Microchip

The Microchip Technology PIC18F448-I/PT is an 8-bit PIC microcontroller in a 44-pin TQFP (10x10 mm) package, featuring 16 KB (8K x 16) of Flash program memory, 768 bytes of SRAM, and a 40 MHz internal/external oscillator. It integrates a 10-bit A/D converter with 8 channels, a CAN module, plus I2C, SPI, and UART/USART communication peripherals, making it well suited for industrial control and automotive body/network applications. The device operates across an industrial -40C to +85C temperature range and supports Microchip's nanoWatt Technology for power-managed operation. According to the Microchip PIC18F448 datasheet (DS39592 family), the PIC18F448 is one of four siblings (PIC18F248/258/448/458) differentiated by pin count (28/40/44) and program-memory size (16 KB vs 32 KB). A PIC18 microcontroller is an 8-bit Reduced Instruction Set Computer (RISC) core in the broader category of microcontrollers (MCU), which sit under embedded computing in the semiconductor hierarchy (MCU -> microcontroller -> embedded IC -> semiconductor). The PIC18F family adds enhanced 16-bit instruction words and 8-bit data paths, advanced peripherals, and C-friendly architecture to the legacy PIC16 line, retaining pin-to-pin compatibility with earlier PIC designs while boosting performance up to 10 MIPS at 40 MHz. Key features include 16 KB Flash with self-programmability, 768 bytes SRAM, 256 bytes EEPROM, 34 digital I/O pins, an enhanced CAN module (ECAN), a 10-bit ADC with up to 8 channels, two 8-bit and three 16-bit timers, two analog comparators, and the nanoWatt power-managed sleep/Idle modes. The CAN peripheral is the primary differentiator versus standard PIC18F452 parts, enabling networked embedded designs. The PIC18F448 uses a Harvard bus architecture with separate program and data paths, a hardware multiplier (8x8 in one cycle), and an 8-level deep hardware stack supporting interrupt priority. The CAN engine implements CAN 2.0B with acceptance filters, while the 10-bit ADC supports both single-ended and differential conversion modes. Typical applications include industrial automation (CAN-bus sensor nodes), automotive body controllers, HVAC controls, smart sensors with CAN connectivity, and CAN-to-UART bridges. The 44-TQFP footprint provides 34 I/O pins for user interfaces while maintaining a compact 10x10 mm outline. When designing with this part, allocate the oscillator configuration and CAN bit-timing registers carefully, since misconfigured CAN timing is a common cause of bus-off errors. In-circuit serial programming (ICSP) via PGC/PGD pins must be reserved for programming and debug, even in production boards. This page consolidates distributor pricing (DigiKey, Mouser, Heisener, FindMyChip), drop-in alternatives (PIC18F448-E/PT, PIC18F458-I/PT, PIC18F4480-I/PT), and design notes not present in the manufacturer datasheet.

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PIC18F4480-E/P

PIC18F4480-E/P - 8-bit 40MHz MCU 16KB Flash ECAN 40-PDIP | Microchip

The Microchip PIC18F4480-E/P is an 8-bit PIC18 microcontroller IC delivering 25 MIPS at 40 MHz, with 16 KB of Flash program memory, 768 bytes of SRAM, and 256 bytes of EEPROM, housed in a 40-pin PDIP package. The -E suffix indicates the extended operating temperature range of -40C to +125C, while /P denotes the through-hole PDIP package. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU core, program and data memory, peripherals, and I/O on one die. The PIC18 family sits in Microchip's enhanced mid-range tier and forms part of the broader microcontroller taxonomy: 8-bit MCU -> PIC18 -> enhanced flash MCU with ECAN -> industrial communication controller. The RISC Harvard architecture executes one instruction per cycle except for branches, which take two cycles. The 16-bit instruction word with separate 8-bit data paths gives the family its high code density and deterministic interrupt latency. Key features include integrated ECAN (Enhanced Controller Area Network) module for industrial and automotive networking, a 10-bit ADC with up to 13 input channels, three independent timers, two capture/compare/PWM modules, an enhanced USART, MSSP for SPI and I2C, and nanoWatt power management for ultra-low sleep currents. The part supports in-circuit serial programming via ICSP and in-circuit debugging via ICD. Two speed grades are commonly referenced: the 25 MHz / 25 MIPS rating and a higher 40 MHz / 10 MIPS rating under specific electrical conditions. Typical applications include CAN bus node controllers, industrial sensor hubs, HVAC fan and damper controllers, automotive body modules, and small automation PLCs. The wide -40C to +125C range suits outdoor, in-cabin, and under-hood installations. When designing with this device, ensure the on-board voltage regulator supplies a stable 4.2 V to 5.5 V rail and place the decoupling capacitor network as close as possible to the VDD and VSS pins to suppress switching noise.

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PIC18F4480-I/ML

PIC18F4480-I/ML - 8-bit 40MHz MCU 16KB Flash ECAN | Microchip

The Microchip Technology PIC18F4480-I/ML is an 8-bit PIC18 microcontroller running up to 40 MHz, integrating 16 KB (8K x 16) of Flash program memory, 768 bytes of RAM, and 256 bytes of EEPROM in a 44-pin QFN (8x8 mm) package. It is part of Microchip's PIC18F family with integrated ECAN (Enhanced Controller Area Network) technology, 10-bit A/D conversion, and nanoWatt power management. The device offers 36 digital I/O pins, an ECAN bus controller, and the standard PIC18 enhanced instruction set with 16-bit-wide instructions for higher code density. A PIC microcontroller (Programmable Interface Controller) is a compact embedded processor that combines a CPU, RAM, non-volatile program memory, and peripherals on a single silicon die. The PIC18 family represents the high-performance tier of Microchip's 8-bit portfolio, providing 16-bit instructions, hardware multiplier, and extended interrupt controller. These devices sit between simpler PIC16 controllers and the 16-bit dsPIC/PIC24 families in the broader microcontroller taxonomy, offering a balance of cost, code density, and real-time deterministic performance for automotive, industrial, and consumer embedded systems. Key features include 40 MHz operation (10 MIPS), 10-bit ADC with up to 11 input channels, two analog comparators, two CCP/ECCP modules, a hardware ECAN module, USART, MSSP (SPI/I2C), and nanoWatt power-saving modes. The 44-QFN (ML) package provides a compact footprint suitable for space-constrained designs while exposing 36 I/O lines. Operating voltage spans 2.0V to 5.5V across -40C to +85C industrial temperature range. The PIC18F4480's hardware ECAN module implements CAN 2.0B with 6 acceptance masks and 16 acceptance filters, enabling deterministic CAN bus communication in automotive and industrial networks. This eliminates the need for an external CAN controller, reducing BOM cost and PCB area. The nanoWatt technology provides multiple idle/sleep modes that drop current consumption to microampere levels, making the device suitable for battery-powered or energy-harvesting applications. Typical applications include CAN node endpoints in automotive body and chassis networks, industrial sensor nodes with analog front-ends, HVAC controllers, motor control peripherals, and small appliance control panels. The wide 2.0V-5.5V range also allows direct connection to 3.3V or 5V digital systems without level translation. When designing with this device, ensure the QFN exposed pad is soldered to a sufficiently large copper pour to meet the package thermal rating. Use Microchip's MPLAB X IDE with XC8 compiler for firmware development, and program the device via ICSP using the PGD/PGC lines. The ECAN module requires careful bit-timing configuration against the oscillator clock for reliable bus arbitration. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet to accelerate component selection.

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PIC18F4480-I/P

PIC18F4480-I/P - 8-bit 40MHz 16KB Flash MCU w/ ECAN, 40-PDIP

The Microchip Technology PIC18F4480-I/P is an 8-bit RISC microcontroller built on the PIC18 Harvard architecture, featuring 16 KB of Flash program memory, 768 bytes of SRAM, 256 bytes of EEPROM, and integrated ECAN (Enhanced CAN) and nanoWatt Technology peripherals, all housed in a 40-pin PDIP (DIP-40) through-hole package. The PIC18F4480-I/P runs at up to 40 MHz (10 MIPS), operates from 4.2V to 5.5V, and exposes 36 digital I/O lines alongside a 10-bit ADC and multiple serial interfaces (ECAN, I2C, SPI, USART). An 8-bit microcontroller is a single-chip computing engine that executes instructions 8 bits at a time using a RISC (Reduced Instruction Set Computer) architecture. In the modern system hierarchy it sits below 32-bit MCUs and microprocessors and is widely used for deterministic, low-cost embedded control. The PIC18 family is Microchip's enhanced 8-bit tier - more capable than the PIC16 (more peripherals, more memory, linear program space) yet more cost-effective than a PIC24 or dsPIC, making PIC18F4480-I/P a typical middle-ground choice for connected industrial nodes. Key features of the PIC18F4480-I/P include 16 KB of self-programmable Flash with 100K endurance cycles per block, 768 bytes of SRAM, and 256 bytes of EEPROM for non-volatile parameter storage. The Enhanced CAN (ECAN) module supports CAN 2.0B active with multiple transmit/receive buffers - a feature that set this family apart at launch. Five CCP/ECCP modules provide PWM and capture/compare functions, and 10-bit A/D conversion is available on up to 13 channels. Architecturally, the PIC18F4480-I/P uses a modified Harvard structure with separate program and data paths plus a 16-bit instruction word, and nanoWatt Technology enables several low-power modes (Run, Idle, Sleep, deep Sleep, RTCC). Up to four hardware-accelerated multiply options and a hardware 8x8 unsigned multiplier in select instructions give it the throughput headroom to drive time-deterministic control loops. Typical applications include industrial automation and sensor networks over CAN bus, embedded automotive body controllers, building automation (HVAC, lighting, access control), low-cost USB/CAN bridges, and general-purpose 5V logic control boards where a through-hole DIP is preferred for prototype or rugged environments. When designing with this device, place decoupling 0.1 uF ceramic close to each supply pair, keep the ECAN bus termination (typically 120 ohm at each end) within a few millimeters of the CAN pins, and ensure the 40 MHz Fosc configuration in the configuration bits matches the oscillator hardware. Use NanoWatt current consumption figures from the datasheet DC/AC characteristics section, not marketing summaries. This page distills the verified manufacturer datasheet, distributor pricing tiers, and cross-reference data into a single decision-ready reference - something a raw PDF or distributor listing does not.

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PIC18F4480-I/PT

PIC18F4480-I/PT - 8-bit 40MHz MCU 16KB Flash w/ ECAN | Microchip

The Microchip Technology PIC18F4480-I/PT is an 8-bit PIC18 microcontroller running at 40 MHz with 16 KB (8K x 16) of Enhanced Flash program memory, 768 bytes of RAM, and 256 bytes of EEPROM, packaged in a 44-pin TQFP (10x10 mm). It integrates an on-chip ECAN (Enhanced Controller Area Network) controller, a 10-bit A/D converter, nanoWatt power management, and 36 digital I/O pins in a single IC. A PIC18 microcontroller is an 8-bit Harvard-architecture MCU from Microchip's PIC18 family - the performance tier above the baseline PIC16 line, designed for high computational performance at economical cost with the addition of Enhanced Flash program memory. It belongs to the broader category of microcontrollers (MCU) -> embedded controllers -> microprocessors, and is part of Microchip's power-management-aware nanoWatt technology family that adds sleep and idle modes to reduce active current consumption. Key specifications include: 40 MHz maximum clock speed, 16 KB Flash program memory, 768 bytes SRAM, 256 bytes EEPROM, 36 I/O pins, 11 channels of 10-bit ADC, an ECAN module, USART, MSSP (SPI/I2C) peripherals, and a 4.2 V to 5.5 V supply voltage range. The industrial -40 C to +85 C temperature range supports embedded applications in non-automotive environments. The ECAN controller is the headline feature, implementing the CAN 2.0B active protocol with hardware acceptance filters and prioritization. Combined with the 10-bit ADC and nanoWatt sleep modes, the PIC18F4480 fits embedded industrial nodes that require deterministic serial communication alongside analog sensing. The 44-pin TQFP (PT) package exposes enough pins for full peripheral operation while remaining hand-solderable for prototypes. Typical applications include industrial CAN nodes, sensor hubs, motor-control signal conditioning front-ends, building automation controllers, and low-power remote sensor platforms. The wide supply voltage range (4.2 V to 5.5 V) and nanoWatt sleep modes make the device usable in 5 V industrial backplanes. When designing with this device, verify that the on-chip ECAN controller matches the CAN protocol in your network. For designs that do not need ECAN, the PIC18F4580 (32 KB Flash) or PIC18F4450 (USB) offer more memory or USB connectivity in the same TQFP-44 footprint.

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PIC18F4480-I/P - 8-bit 40MHz 16KB Flash MCU w/ ECAN, 40-PDIP

PIC18F4480-I/PT - 8-bit 40MHz MCU 16KB Flash w/ ECAN | Microchip