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Produtos (35.000+)

PIC18F442-I/L - 40MHz 8-bit MCU 16KB Flash 44-PLCC | Microchip
PIC18F442-I/L

PIC18F442-I/L - 40MHz 8-bit MCU 16KB Flash 44-PLCC | Microchip

The Microchip Technology PIC18F442-I/L is a high-performance 8-bit CMOS Flash microcontroller based on the PIC18 RISC architecture, delivering up to 10 MIPS (100ns instruction execution) in a 44-pin PLCC (J-Lead) package. It integrates 16KB of Flash program memory, 768 bytes of RAM, and 256 bytes of EEPROM, operating at clock speeds up to 40 MHz across a 4.2 V to 5.5 V supply range. An 8-bit microcontroller is a single-chip computer built around an 8-bit data path and a small but powerful instruction set optimized for embedded control. PIC18-family devices sit in the upper tier of Microchip's 8-bit portfolio, sitting above the PIC16 family in code density, peripheral count, and MIPS throughput, while remaining part of the broader MCU -> embedded controller -> semiconductor taxonomy. The PIC18F442 specifically targets designs that need more code space and RAM than the PIC16 mid-range parts but do not yet justify stepping up to a PIC24 dsPIC or 32-bit MCU. Key features include 34 digital I/O lines, a 10-bit A/D converter with 8 input channels, two Capture/Compare/PWM (CCP) modules, an enhanced USART, an MSSP configurable as SPI or I2C, and nanoWatt Technology dynamic power management. The 8-channel 10-bit ADC supports up to 8 multiplexed analog inputs, and the CCP peripherals make the device well-suited for motor control, power conversion, and PWM-driven actuator applications. The 256-byte on-chip EEPROM provides non-volatile data storage for calibration constants or user settings without external memory. The architecture combines a 16-bit-wide instruction word with an 8-bit data path, allowing most instructions to execute in a single cycle. Self-programming capability, an ICD (In-Circuit Debugger) interface, and C-compiler friendly design reduce development friction. The PIC18F442 is upwardly code-compatible with PIC16C5X, PIC12CXXX, PIC16CXX, and PIC17CXX devices, giving engineers a migration path to higher performance without rewriting firmware. Typical applications include industrial automation and control, automotive body and sensor subsystems, home appliances, sensor interfacing, small motor control, and low-power embedded nodes. The combination of EEPROM, ADC, CCP, and serial peripherals in a 44-pin package is a common fit for HVAC, vending, lighting control, and instrument front-end boards. When designing with this device, budget the oscillator startup time and decoupling carefully; the PLCC package benefits from a ground plane and 100 nF ceramic bypass caps on each supply pin. Note that the PIC18F442-I/L is in Not Recommended for New Designs (NRND) status; existing designs can continue using it but new programs should evaluate the PIC18F452 successor family. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not found in the manufacturer datasheet alone.

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PIC18F442-I/P - 8-Bit 40MHz 16KB Flash MCU | Microchip DIP-40
PIC18F442-I/P

PIC18F442-I/P - 8-Bit 40MHz 16KB Flash MCU | Microchip DIP-40

The Microchip Technology PIC18F442-I/P is an 8-bit CMOS Flash-based microcontroller delivering 10 MIPS (100 ns instruction execution) performance from a 40 MHz clock, packaged in a 40-pin PDIP (DIP-40) through-hole form factor. The device integrates 16 KB of Flash program memory, 768 bytes of SRAM, and 256 bytes of EEPROM, providing a complete self-programming platform with In-Circuit Debug (ICD) support. The 'I' suffix denotes the industrial operating temperature range of -40C to +85C, while the 'P' suffix designates the plastic DIP-40 package. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, memory (Flash, SRAM, EEPROM), and programmable I/O peripherals on one die. PIC18F microcontrollers belong to Microchip's enhanced 8-bit PIC architecture, occupying the mid-tier of the PIC family hierarchy (PIC10/12/14/16 base → PIC18 enhanced → PIC24/dsPIC 16-bit → PIC32 32-bit). They are widely used in industrial control, automotive body electronics, and consumer appliances where deterministic real-time response and a mature toolchain outweigh the raw throughput of 32-bit cores. The PIC18F442 features 34 digital I/O pins, an 8-channel 10-bit Analog-to-Digital Converter (ADC), two Capture/Compare/PWM (CCP) modules, a synchronous serial port configurable as SPI or I2C, an Addressable USART, and nanoWatt power management. The Harvard architecture and 77 single-word instruction set deliver deterministic execution suited to interrupt-driven control loops. Operating voltage spans 4.2 V to 5.5 V from a single supply. Typical applications include industrial automation controllers, motor control firmware, HVAC thermostats, security panel keypads, and white-goods user interfaces. The combination of Flash self-programming, ICD, and a 10-bit ADC enables in-field firmware updates and direct sensor interfacing without external components. According to the manufacturer datasheet, the device offers upwards source-code compatibility with PIC16C5X, PIC12CXXX, PIC16CXX, and PIC17CXX families, providing a seamless migration path. When designing, allocate decoupling capacitors within 5 mm of VDD/AVDD pins and reserve the MCLR pin for a proper reset network to ensure robust operation in electrically noisy industrial environments.

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PIC18F4420-E/P - 8-bit MCU, 16KB Flash, 40MHz, 40-PDIP | Microchip
PIC18F4420-E/P

PIC18F4420-E/P - 8-bit MCU, 16KB Flash, 40MHz, 40-PDIP | Microchip

The Microchip Technology PIC18F4420-E/P is an 8-bit PIC microcontroller built on RISC architecture, delivering 40 MHz operation, 16 KB of on-chip Flash program memory, 768 bytes of RAM and 256 bytes of EEPROM in a 40-pin PDIP (DIP-40) package. It integrates a 10-bit A/D converter with up to 13 input channels, nanoWatt power management technology, and 36 digital I/O lines, making it a strong fit for embedded control designs. The PIC18F4420-E/P operates from 4.2 V to 5.5 V and supports the extended industrial temperature range of -40 °C to +125 °C. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory (Flash/ROM), data memory (RAM), peripherals and I/O on one silicon die, executing instructions in 8-bit-wide data paths. RISC microcontrollers like the PIC18 family prioritise a small, fixed instruction set and Harvard memory architecture so that most instructions complete in a single cycle, simplifying deterministic firmware timing for real-time control tasks. The PIC18F4420-E/P sits within the broader taxonomy: microcontroller -> 8-bit MCU -> PIC18 family -> nanoWatt enhanced-Flash sub-family. Key features that distinguish this part include the nanoWatt Technology power-saving modes (run, idle, sleep, and deep-sleep with RTCC), the 10-bit A/D converter with a built-in acquisition timer, two analog comparators, two CCP/ECCP modules, an enhanced USART, an MSSP port supporting SPI and I²C, and self-programming Flash with an internal programmable LDO of 3.3 V or 5 V. The architecture combines a 16-bit wide instruction word with 8-bit data paths, providing 10 MIPS sustained throughput at 40 MHz. Peripherals are accessed through an SFR-based memory map that keeps ISR latency short and interrupt handling deterministic for real-time control loops. Typical applications include industrial sensor interfacing, motor control front-ends (stepper/small DC), HVAC controllers, automotive body and accessory modules, appliance control boards, and general-purpose embedded platforms that need a through-hole DIP form factor for rapid prototyping or legacy-system drop-in. When designing with the PIC18F4420-E/P, ensure the ICSP programming clock and data pins (RB6/RB7 on 40-pin parts) are reserved for the debugger/programmer header and not loaded by external circuitry; also add a decoupling capacitor within 5 mm of each VDD/VSS pair as recommended in the manufacturer datasheet. This page synthesizes distributor pricing, drop-in equivalents, and practical design notes not found in the standalone Microchip datasheet, supporting faster sourcing and BOM decisions.

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PIC18F4420-E/PT - 8-Bit 40MHz 16KB Flash MCU 44-TQFP | Microchip
PIC18F4420-E/PT

PIC18F4420-E/PT - 8-Bit 40MHz 16KB Flash MCU 44-TQFP | Microchip

The Microchip Technology PIC18F4420-E/PT is an 8-bit RISC PIC® 18F enhanced flash microcontroller running at up to 40 MHz, integrating 16 KB (8K x 16) of program flash, 768 bytes of SRAM, and 256 bytes of EEPROM in a 44-pin TQFP (10x10 mm) package. The "E" suffix denotes the -40C to +125C extended industrial temperature grade, making it suitable for automotive and harsh-environment deployments. What is a PIC18F microcontroller? PIC18F is Microchip's high-performance 8-bit PIC microcontroller family that bridges legacy 8-bit designs to modern connectivity. It sits within the PICmicro -> 8-bit MCU -> microcontroller -> embedded controller hierarchy. The PIC18F architecture features a 16-bit instruction word, hardware multiply, and a 31-level stack with 77 instructions - balancing code density, deterministic interrupt latency, and ease of programming via MPLAB X IDE. Key features include 36 digital I/O pins arranged across 5 ports (PORTA-PORTE), a 10-bit ADC with up to 13 input channels, two capture/compare/PWM (CCP) modules, an Enhanced CCP (ECCP) module, two USART modules, one MSSP (SPI/I2C), and a 10-bit DAC-style PWM output. The nanoWatt technology provides multiple power-managed modes (Run, Idle, Sleep) and a low-power Timer1 oscillator, enabling standby currents below 1 uA typical. Technically, the PIC18F4420 implements a Harvard architecture with separate program and data buses, hardware Multiply, and 32 KB addressable program space. The integrated ICSP (In-Circuit Serial Programming) and ICD (In-Circuit Debug) interfaces allow flash programming and real-time debugging directly on the production PCB using MPLAB ICD 3/4 or PICkit 5 programmers, eliminating the need for socketed parts. Typical applications include industrial sensor signal conditioning with the on-chip ADC, motor control with the ECCP module driving half-bridges, automotive body controllers operating in extended temperature, consumer appliance control panels, and USB-to-UART bridges using the dual USART. The wide supply range (4.2 V to 5.5 V) accommodates regulated 5 V rails. When designing with this MCU, reserve pin 1 (MCLR/VPP) for a proper reset network with a 10 kohm pull-up and a 100 nF cap to ground, and ensure the internal PLL settings match the oscillator configuration bits to avoid clock-failure lockups. This page consolidates distributor pricing, AEC-Q100 cross-reference, drop-in alternatives, and practical MPLAB-based design notes not present in the bare datasheet - offering engineers a faster procurement and design-verification path.

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PIC18F4420T-I/ML - 8-bit PIC MCU 16KB Flash 44-QFN | Microchip
PIC18F4420T-I/ML

PIC18F4420T-I/ML - 8-bit PIC MCU 16KB Flash 44-QFN | Microchip

The Microchip PIC18F4420T-I/ML is an 8-bit PIC18 family CMOS flash microcontroller with up to 16 MIPS throughput, 16 KB of on-chip flash program memory, 768 bytes of RAM and 256 bytes of EEPROM, housed in a 44-pin QFN (ML) package with exposed pad. It operates from 4.2 V to 5.5 V, supports clock speeds up to 40 MHz and provides 36 digital I/O pins plus a 10-bit, 13-channel ADC. An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit data path, optimized for deterministic, low-cost embedded control. PIC18 series parts extend the classic PIC architecture with a 16-bit instruction word, hardware multiplier and nanoWatt power management, sitting between simple PIC10/12/16 MCUs and 16-bit dsPIC/dsPIC33/PIC24 devices. PIC18F4420 specifically belongs to the 28/40/44-pin enhanced flash family that targets human-machine interface, sensor signal conditioning and small protocol bridging tasks. Key features of this part include the nanoWatt power-managed core with multiple idle/sleep modes, a 10-bit ADC with up to 13 input channels, two 8-bit and three 16-bit timers, two capture/compare/PWM modules, an enhanced USART, an MSSP module that supports SPI and I2C (master/slave), and a parallel slave port. The on-chip ICD2/ICD3 debug interface and self-programmable flash make firmware iteration fast in development. Architecturally, the device uses a Harvard-cache RISC engine, 32-level hardware stack and interrupt-driven peripherals, with the ADC sharing a dedicated voltage reference. The exposed thermal pad of the QFN-44 package keeps junction-to-ambient thermal resistance low, allowing reliable operation across the industrial -40C to +85C range. Typical applications include industrial control panels, sensor signal conditioning nodes, USB-to-UART bridges, small graphic LCD drivers, motor control (PWM-driven DC and stepper stages at low power), and HVAC/home appliance user interfaces. It is also widely used as a teaching platform for PIC assembly and C development. When designing with this MCU, place decoupling capacitors (0.1 uF plus 10 uF bulk) within a few millimetres of VDD/VSS pairs, and solder the QFN EP pad to a continuous ground plane for thermal and electrical reasons. Use the MSSP for I2C/SPI peripherals instead of bit-banging, and reserve the parallel slave port pins if bus-mode external memory is anticipated, since they cannot be used as GPIO when the PSP is enabled. This page combines manufacturer datasheet specifications, distributor pricing, drop-in 44-pin QFN alternatives and practical design notes that are not collated in a single place on Microchip's product page.

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PIC18F4420T-I/PT - 40MHz 8-bit MCU, 16KB Flash | Microchip
PIC18F4420T-I/PT

PIC18F4420T-I/PT - 40MHz 8-bit MCU, 16KB Flash | Microchip

The Microchip Technology PIC18F4420T-I/PT is an 8-bit PIC18F-family flash microcontroller (MCU) running up to 40 MHz with 16 KB (8K x 16) of program Flash, 768 bytes of SRAM, and 256 bytes of EEPROM, housed in a 44-pin TQFP (10x10 mm) package. An 8-bit microcontroller is a single-chip computer built around an 8-bit data path and Harvard architecture, integrating CPU, RAM, non-volatile program memory, peripherals, and I/O on one die. Within the broader taxonomy, the PIC18F4420 belongs to the PIC18F enhanced-flash family -> PIC18 family -> PIC microcontrollers (MCU) -> microcontrollers -> microprocessors and microcontrollers -> semiconductors. The 'T' suffix in the MPN denotes Tape-and-Reel packaging and the 'I' indicates the Industrial temperature grade (-40C to +85C), while 'PT' designates the TQFP-44 package. Key features include 36 digital I/O pins, a 10-bit Analog-to-Digital Converter (ADC) with up to 13 input channels, two USART modules, one MSSP (Master Synchronous Serial Port) supporting both SPI and I2C, two Capture/Compare/PWM (CCP) modules, one Enhanced CCP (ECCP), four 8-bit timers and three 16-bit timers, nanoWatt Technology for power management, and an 8x8 hardware multiplier. The 16 KB Flash supports self-programming and ICSP (In-Circuit Serial Programming). Architecturally, the PIC18F4420 uses an enhanced RISC Harvard architecture with 16-bit instructions and 8-bit data, achieving up to 10 MIPS (Million Instructions Per Second) at 40 MHz. It features separate instruction and data buses, a 32-level hardware stack, 31 interrupt sources with priority levels, and a software-controlled low-power Sleep mode for battery-friendly designs. Typical applications include industrial sensor interfaces, consumer appliance control, building automation, HVAC controls, motor control (low-power brushed DC), and battery-powered instruments where the 16 KB Flash and 768-byte SRAM are sufficient for control logic, protocol handling, and ADC sampling. When designing with the PIC18F4420, allocate proper decoupling (100 nF ceramic per VDD/VSS pair), keep traces to the 20 MHz crystal short, and consult Microchip MPLAB XC8 compiler and PICkit 5 programmer documentation for the development environment. Verify that total I/O sink current does not exceed the 200 mA absolute maximum across all ports. This page synthesizes distributor pricing, drop-in same-package alternatives from Microchip, and design notes not consolidated in the manufacturer datasheet.

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PIC18F4423-E/ML - 8-bit MCU, 16KB Flash, 40MHz, 44-VQFN | Microchip
PIC18F4423-E/ML

PIC18F4423-E/ML - 8-bit MCU, 16KB Flash, 40MHz, 44-VQFN | Microchip

The Microchip PIC18F4423-E/ML is an 8-bit PIC18 family flash microcontroller delivering 40 MHz (10 MIPS) CPU performance with 16 KB on-chip flash program memory and 768 bytes of RAM, packaged in a 44-pin VQFN (8x8 mm) with exposed thermal pad. It integrates a 10-bit A/D converter, nanoWatt power management, and 36 digital I/O pins, making it a general-purpose embedded controller for industrial and consumer designs. The 'E' suffix indicates the extended industrial temperature grade of -40C to +125C. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program and data memory, peripherals, and I/O onto one silicon die. Within the broader semiconductor hierarchy, an MCU is a sub-category of microprocessors, sitting alongside DSPs, FPGAs, and microcontrollers in the embedded compute taxonomy. PIC microcontrollers from Microchip use a Harvard RISC architecture with separate program and data buses, executing most instructions in a single cycle. The PIC18 family is Microchip's high-performance 8-bit line, providing C-compiler-friendly architecture, hardware multiply, and rich peripheral integration. The PIC18F4423 operates from 4.2 V to 5.5 V and includes peripherals such as an enhanced USART, MSSP (SPI/I2C), Capture/Compare/PWM modules, 10-bit ADC with up to 13 channels, and nanoWatt features including idle, sleep, and run-time power modes. Its 16 KB flash supports self-programming and ICSP (In-Circuit Serial Programming). The 'F' designation means flash-based program memory, allowing field-upgradeable firmware. Architecturally, the PIC18F4423 uses a 16-bit instruction word with 8-bit data path, and supports a 31-level hardware stack and software-managed memory model. The 10-bit ADC samples at rates suitable for control loops and slow analog sensing; the PWM/CEC pins support motor, lighting, and switching power control. Typical applications include industrial control, sensor interfaces, low-end motor control, consumer appliances, and human-machine interfaces (HMI). The 40 MHz clock and 36 I/O lines support moderate-density designs requiring multiple analog inputs and serial communication. For designers, the extended temperature grade ('-E') allows automotive and industrial environments without special screening, while the 44-VQFN package is footprint-compatible with several other PIC18F44xx devices, easing PCB reuse across variants. Note that PIC18F devices with the same pin count but different memory sizes in the same package are usually drop-in compatible with code adjustments only. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not found in the manufacturer datasheet alone.

Cotação Contato
PIC18F4423-E/P - 8-bit 16KB Flash MCU, 40MHz, 40-DIP | Microchip
PIC18F4423-E/P

PIC18F4423-E/P - 8-bit 16KB Flash MCU, 40MHz, 40-DIP | Microchip

The Microchip Technology PIC18F4423-E/P is an 8-bit CMOS flash-based microcontroller from the PIC18F44xx family, featuring 16 KB of program Flash memory and 36 I/O pins in a 40-pin PDIP (DIP-40) through-hole package. It operates at up to 40 MHz (10 MIPS) from a 4.2 V to 5.5 V supply, and integrates a 10-bit A/D converter with up to 13 channels, two analog comparators, a USART, MSSP (SPI/I2C), and the nanoWatt power-managed sleep modes. The -E suffix indicates the extended industrial operating temperature grade (-40 C to +125 C). A PIC18F microcontroller is a Harvard-architecture 8-bit RISC MCU belonging to the wider microcontroller (MCU) family - a category of single-chip computers that integrate CPU, RAM, non-volatile program memory, and peripherals. Within the PIC family hierarchy, PIC18F sits in the enhanced mid-range tier (between PIC16F baseline and dsPIC30/33 DSP families), offering 16-bit instructions, 31-level stack, and C-friendly architecture. PIC18F MCUs are widely used in industrial control, automotive body electronics, and consumer products where deterministic real-time performance and 5 V tolerance are required. Key features of the PIC18F4423-E/P include 16 KB Flash program memory, 768 bytes of RAM, 256 bytes of EEPROM, 25 mA source/sink per I/O, four timer modules (Timer0/1/2/3), a 10-bit ADC with 13 input channels, and two enhanced capture/compare/PWM (ECCP) modules. The device supports ICSP (In-Circuit Serial Programming) and ICD (In-Circuit Debugging) via the MPLAB ecosystem. The PIC18F4423-E/P's 40-pin PDIP footprint and 5 V tolerance make it a direct successor to legacy PIC16F and early PIC18F designs. It is widely deployed where hand-solderable through-hole assembly and robust 5 V I/O are required - notably industrial automation modules, HVAC controllers, motor control boards, and instrumentation front-ends. When designing with this part, place a 100 nF decoupling capacitor within 5 mm of each VDD/VSS pin pair, and add a 10 uF bulk capacitor on the main supply rail. The MCLR reset pin requires a 10 kohm pull-up to VDD; the device can be programmed/debugged in-circuit via the ICSPDAT/ICSPCLK pins using the MPLAB PICkit 5.

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PIC18F4423-E/PT - 8-Bit 40MHz 16KB Flash MCU 44-TQFP | Microchip
PIC18F4423-E/PT

PIC18F4423-E/PT - 8-Bit 40MHz 16KB Flash MCU 44-TQFP | Microchip

The Microchip Technology PIC18F4423-E/PT is a high-performance 8-bit CMOS flash-based microcontroller in the PIC18F family, running at up to 40 MHz (10 MIPS) and offering 16 KB of on-chip program flash (8K x 16) plus 768 bytes of SRAM, in a 44-pin TQFP (10x10 mm) package. It is one of Microchip's 28/40/44-pin Enhanced Flash microcontrollers with nanoWatt power management and a 10-bit A/D converter. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory (ROM/Flash), data memory (RAM), and peripherals (I/O, timers, ADC, communication interfaces) on one die. Within the broader taxonomy, the PIC18F4423 belongs to the RISC MCU family -> 8-bit MCU -> general-purpose microcontroller -> embedded control IC. The PIC18 family uses an enhanced Harvard RISC architecture with 16-bit instructions and 8-bit data paths, sitting above baseline PIC10/12/16 families in performance and below PIC24/dsPIC/PIC32 in raw throughput. Key features include 36 digital I/O lines, 13 ADC channels (10-bit), two analog comparators, two CCP/ECCP modules, two USART modules, MSSP (SPI/I2C), an Enhanced Capture/Compare/PWM peripheral, and nanoWatt Technology dynamic power-management modes. The integrated ICSP (In-Circuit Serial Programming) and ICD (In-Circuit Debug) interfaces allow field upgrades and real-time debug via standard Microchip tools (MPLAB X, PICkit, ICD). The 40 MHz maximum clock delivers 10 MIPS, with 200 ns instruction cycle, while nanoWatt modes (Sleep, Idle, RC_RUN, etc.) cut quiescent current for battery applications. The PIC18F4423 uses a modified Harvard architecture with separate program and data buses, plus a 31-level hardware stack, 75 instructions (83 with extended instruction set), and an internal 8 MHz / 32 kHz oscillator block. The 16 KB flash supports self-programming under firmware control (bootloader capability), and the 256-byte data EEPROM simplifies parameter storage. Typical applications include industrial control systems, automotive body electronics (the -E suffix denotes the -40C to +125C extended temperature grade suitable for underhood and industrial environments), consumer appliances, sensor signal conditioning, and low-power remote sensor nodes. With 36 I/O and 13 ADC channels, it can directly interface to keypad matrices, multiple sensors, and bridges. When designing, ensure the 4.2 V to 5.5 V supply rail is well-decoupled with 100 nF + 10 uF ceramic near the VDD pins. For low-power modes, carefully manage oscillator wake-up timing. The -E/PT part is the extended-temperature variant in the TQFP package; the -I/PT variant supports only -40C to +85C. This page consolidates distributor pricing, parametric drop-in alternatives from the PIC18F family, and practical design notes not found on a single manufacturer datasheet page.

Cotação Contato
PIC18F4423-I/ML - 8-bit 40MHz 16KB Flash MCU 44-QFN | Microchip
PIC18F4423-I/ML

PIC18F4423-I/ML - 8-bit 40MHz 16KB Flash MCU 44-QFN | Microchip

The Microchip Technology PIC18F4423-I/ML is an 8-bit PIC18F-family enhanced flash microcontroller with a 40 MHz maximum CPU clock (10 MIPS), 16 KB (8K x 16) of on-chip flash program memory and 768 bytes of RAM, housed in a 44-pin QFN (8x8 mm) package with 36 digital I/O lines. It integrates a 12-bit A/D converter (the datasheet family references both 10-bit and 12-bit ADC variants), nanoWatt Technology power management, and supports a 4.2V to 5.5V supply voltage range, making it a strong fit for industrial and embedded control designs. A PIC18F microcontroller is an 8-bit RISC CMOS MCU built around an enhanced Harvard architecture with a 16-bit instruction word. Within the broader taxonomy, PIC18F sits under Microcontrollers -> Integrated Circuits -> Semiconductors, and is the mid-range performance tier above PIC16F and below the dsPIC33/PIC24 16-bit families. PIC18F parts are widely used where deterministic real-time control, generous peripheral integration and easy in-circuit reprogrammability are required. Key features of the PIC18F4423-I/ML include 256 bytes of EEPROM data memory, two 8-bit and three 16-bit timers, two capture/compare/PWM modules, a master synchronous serial port (SSP) supporting SPI and I2C, an enhanced USART, dual analog comparators, and nanoWatt Technology for low-power sleep and idle modes. The 12-bit A/D converter delivers 12-channel acquisition for sensor readout and motor-control feedback. The wide operating temperature range (industrial -40C to +85C) suits factory and outdoor equipment. The architecture uses a 16-bit instruction path with an 8-bit data path, providing up to 10 MIPS throughput at 40 MHz. The flash program memory supports self-programming under bootloader control, allowing field firmware updates over UART or USB. nanoWatt Technology provides dynamic clock switching, sleep/idle modes with sub-microamp currents, and oscillator start-up timers for battery-aware designs. Typical applications include industrial sensor monitoring, HVAC control panels, low-end motor control, instrumentation with analog front-ends, and consumer appliance control boards. The 12-bit ADC plus capture/PWM make it well-suited to closed-loop feedback systems. This device pairs naturally with PIC18F-series companions such as PIC18F4420 (smaller memory variant) or PIC18F4520 (32 KB flash sibling) for scalable product platforms. When designing with the PIC18F4423-I/ML, ensure decoupling (100 nF + 10 uF bulk) is placed close to VDD/VSS pairs and respect the 44-QFN thermal pad soldering guidelines (IPC-7351 land pattern). Plan the trace routing so that the analog AVdd/AVss pair is filtered with a ferrite bead to preserve ADC SNR at full 12-bit resolution. The Industrial (-I) temperature grade covers -40C to +85C, which satisfies most non-automotive embedded-control use cases. This page synthesizes distributor pricing, drop-in PIC18F alternatives, package-level pinout guidance and practical design notes that are not compiled in the manufacturer datasheet alone, giving engineers a faster path from datasheet review to prototype.

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PIC18F4423-I/P - 8-Bit 40MHz 16KB Flash MCU 40-PDIP | Microchip
PIC18F4423-I/P

PIC18F4423-I/P - 8-Bit 40MHz 16KB Flash MCU 40-PDIP | Microchip

The Microchip Technology PIC18F4423-I/P is an 8-bit PIC18F family microcontroller built on a high-performance RISC architecture delivering up to 16 MIPS at 40 MHz, housed in a 40-pin PDIP (through-hole) package. The device integrates 16 KB of Flash program memory, 768 bytes of RAM, and 256 bytes of EEPROM data memory, making it suitable for moderate-complexity embedded control applications. It operates from 2.0V to 5.5V across the industrial temperature range (-40C to +85C) and is qualified to Microchip's standard industrial "-I" grade. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory (Flash), data memory (RAM), and peripherals onto one die. The PIC18 family employs an 8-bit data path with a RISC instruction set, an enhanced Harvard architecture with separate program and data buses, and a 31-level hardware stack. Within the broader IC hierarchy, the PIC18F4423 belongs to the microcontroller category, sitting beneath 16-bit and 32-bit MCUs in processing capability while outperforming baseline PIC10/PIC12/PIC16 parts in peripherals and memory. Key features include a 10-bit Analog-to-Digital Converter (ADC) with up to 13 channels, two analog comparators, a Capture/Compare/PWM (CCP) module, an Enhanced Universal Synchronous/Asynchronous Receiver Transmitter (EUSART), a Master Synchronous Serial Port (MSSP) supporting SPI and I2C, and nanoWatt power-management technology that drops quiescent current into the sub-microamp range for sleep-mode battery applications. The 36 programmable I/O pins are 5V-tolerant and source/sink up to 25 mA per pin, sufficient to drive LEDs and small relays directly. The PIC18F4423 uses Microchip's enhanced flash cell with self-programmability under application control, supporting in-circuit serial programming (ICSP) and a robust code-protection scheme. Internal oscillator options and a programmable brown-out reset (BOR) reduce external component count, while a hardware Watchdog Timer with postscaler adds fail-safe operation in unattended systems. Typical applications include industrial sensor acquisition boards, HVAC fan/thermostat control, low-end human-interface panels, appliance controllers, and battery-powered metering modules that benefit from nanoWatt sleep modes. Hobbyist and educational platforms also use the PIC18F4423 as a gateway into the PIC ecosystem because of its abundant tutorials and free MPLAB X IDE toolchain. When designing with the PIC18F4423, ensure that VDD decoupling (0.1 uF ceramic close to each VDD/VDD-Pin pair) and a 10 kohm pull-up on MCLR are placed per Microchip's analog-layout guidelines. The 40-pin PDIP footprint offers generous board real estate for hand-soldered prototypes and breadboard-friendly development, but migrated designs should select the TQFP-44 surface-mount package variants for volume production. This page synthesizes distributor pricing, same-family drop-in alternatives, and practical design notes that are not aggregated on a single manufacturer or distributor page.

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PIC18F4423T-I/PT - 8-bit MCU, 16KB Flash, 36 I/O, TQFP-44 | Microchip
PIC18F4423T-I/PT

PIC18F4423T-I/PT - 8-bit MCU, 16KB Flash, 36 I/O, TQFP-44 | Microchip

The Microchip PIC18F4423T-I/PT is a high-performance 8-bit CMOS flash microcontroller built on the PIC18 enhanced RISC architecture, delivering up to 16 MIPS at a 40 MHz oscillator, packaged in a 44-pin TQFP (PT). It integrates 16 KB of on-chip flash program memory, 768 bytes of RAM, and 256 bytes of EEPROM, with 36 digital I/O lines and a 10-bit ADC with up to 13 channels. The device operates from 4.2 V to 5.5 V and supports the industrial temperature range of -40 °C to +85 °C. An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit data path, optimized for embedded control tasks such as sensor reading, motor driving, user-interface handling, and low-to-moderate bandwidth communication. The PIC18 family sits within Microchip's 8-bit MCU hierarchy (PIC10/12/16/18) and is targeted at applications that require more peripherals and code space than baseline PIC16 parts but do not need the 16-bit dsPIC or 32-bit SAM architectures. Within that hierarchy the PIC18F4423 belongs to the 28/40/44-pin high-performance, enhanced-flash sub-family with nanoWatt power management and an integrated 10-bit A/D converter. Key features of this part include 16 KB of self-programmable flash, nanoWatt technology for power-managed sleep and idle modes, a 10-bit A/D converter with up to 13 input channels, two analog comparators, a hardware USART, an MSSP module supporting SPI and I2C (both Master and Slave), and four 16-bit timer/counters. The 44-pin TQFP package exposes two capture/compare/PWM (CCP) modules plus one Enhanced CCP (ECCP) module, providing flexible PWM control for motor, lighting, and power-conversion loops. CIP (Core Independent Peripherals) functions let the timers, comparators, and PWM run autonomously without CPU intervention. Architecturally the part uses a 16-bit instruction word with an 8-bit data bus, an 8x8 hardware multiplier, and a 31-level hardware stack. The enhanced flash controller supports self-programming and ICSP (In-Circuit Serial Programming) via two pins, allowing in-field firmware updates. Hardware-level interrupt handling, context saving on stack, and a vectored interrupt structure reduce jitter in real-time control loops. The instruction set is largely upward-compatible with the PIC16 family, easing migration of legacy firmware. Typical applications include industrial control and sensor interface boards, low-cost HMI panels, small motor-control BLDC or stepper drivers, USB-to-UART bridges (when paired with an external transceiver), battery chargers, white-goods appliances, and general-purpose 5 V embedded designs that need 16 KB of code and a handful of analog inputs. The wide industrial temperature window also makes it suitable for outdoor installations and automotive under-hood subsystems outside the AEC-Q100 envelope. Design consideration: when migrating to PIC18F46J11 or PIC18F46J50 the I/O mapping is not strictly identical - verify peripheral remapping tables before PCB respin. For noise-sensitive analog readings, route the analog VREF+ pin separately from digital VDD and add bulk-decoupling of at least 10 µF at the supply pin. This page synthesizes distributor pricing, drop-in TQFP-44 alternatives, and practical design notes not found in the manufacturer datasheet, helping engineers decide whether the PIC18F4423T-I/PT is the right fit for a 5 V, 16 KB-code, 36-I/O embedded design in 2026.

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PIC18F442T-I/L - 8-bit 40MHz 16KB Flash MCU 44-PLCC | Microchip
PIC18F442T-I/L

PIC18F442T-I/L - 8-bit 40MHz 16KB Flash MCU 44-PLCC | Microchip

The Microchip Technology PIC18F442T-I/L is an 8-bit CMOS Flash-based microcontroller from the PIC18F family, delivering 10 MIPS performance at 40 MHz clock speed, packaged in a 44-pin PLCC (16.59 x 16.59 mm) form factor with surface-mount J-leads. It integrates 16 KB of Flash program memory (8K x 16 words), 768 bytes of SRAM data memory, and 256 bytes of EEPROM, providing the storage balance typical of mid-range embedded designs. A microcontroller (MCU) is a single-chip computer containing a CPU core, program and data memory, peripheral I/O, and timers on one die. The PIC18F family belongs to Microchip's 8-bit enhanced Harvard architecture tier, offering 16-bit opcodes, 31-level hardware stack, and 77 single-word instructions, sitting above the baseline PIC16 family in memory and peripheral sophistication. Within Microchip's broader portfolio it is categorized as a high-performance enhanced Flash MCU with nanoWatt power management, popular in industrial control, automotive body modules, and consumer white-goods designs. Key features of the PIC18F442T-I/L include an integrated 10-bit ADC with up to 8 channels, a USART for serial communication, an MSSP module supporting SPI and I2C, capture/compare/PWM (CCP) modules, and 34 digital I/O lines. The 'T' suffix denotes tape-and-reel packaging, 'I' indicates the industrial -40C to +85C temperature range, and 'L' identifies the PLCC package. Operating voltage spans 4.2 V to 5.5 V from a single supply. The architecture uses a separate instruction and data bus with a 25 ns instruction cycle at 40 MHz. This deterministic pipeline simplifies real-time control loops and avoids the fetch-decode bottleneck of von Neumann designs. The 8-bit datapath keeps code density high for bit-oriented and byte-oriented tasks. Typical applications include industrial sensor interfaces, motor control front-ends, low-cost automotive body controllers, HVAC control boards, and consumer appliance mainboards. The wide operating voltage and strong peripheral set make it a frequent choice for upgrading older PIC16 designs needing more memory. When designing with this MCU, observe the in-circuit serial programming (ICSP) voltage requirements and ensure decoupling is placed within 5 mm of the supply pins. The 5V-only range means it is not directly drop-in compatible with 3.3V-only systems without level translation. This page consolidates distributor pricing, drop-in alternatives, and practical design notes beyond the manufacturer datasheet.

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PIC18F442T-I/PT - 8-bit MCU, 16KB Flash, 44-TQFP | Microchip
PIC18F442T-I/PT

PIC18F442T-I/PT - 8-bit MCU, 16KB Flash, 44-TQFP | Microchip

The Microchip Technology PIC18F442T-I/PT is a 10 MIPS, 8-bit CMOS flash microcontroller with 16KB program memory, 768 bytes RAM, and 256 bytes EEPROM, housed in a 44-pin TQFP (10x10 mm) package. It runs at up to 40 MHz clock speed, executes instructions in 100 ns, supports 4.2V to 5.5V single-supply operation, and provides 34 digital I/O pins with nanoWatt power management. What is a PIC18F microcontroller? The PIC18F family is Microchip's enhanced 8-bit RISC architecture, succeeding the PIC16 mid-range line with a 16-bit instruction word, hardware multiplier, linear memory map, and C-friendly compiler support. The PIC18F442 specifically targets 40/44-pin applications needing on-chip 10-bit ADC, multiple timers, and USB-/CAN-free general-purpose connectivity at industrial temperature ranges. It belongs to the broader category of microcontrollers (MCU) -> embedded controllers -> integrated circuits -> semiconductors. Key differentiating features include 16KB self-programmable flash, 10-bit ADC up to 8 channels, two analog comparators, a USART with LIN support, MSSP (SPI/I2C), two capture/compare/PWM modules, and nanoWatt Technology for low-power sleep modes drawing under 1 uA. The 40 MHz oscillator provides 10 MIPS throughput, while 77 single-word instructions simplify assembly programming and reduce code footprint. The architecture is a Harvard-style RISC core with separate program and data buses, 31-level hardware stack, and an 8x8 hardware multiplier for efficient arithmetic operations. It is fully upwards compatible with PIC16C5X, PIC16CXX, PIC17CXX, and PIC12CXXX source code, enabling seamless code migration from legacy Microchip designs. Typical applications include industrial control panels, HVAC actuator controllers, automotive body electronics, sensor signal conditioning nodes, low-end consumer appliances, and educational embedded kits. The 44-TQFP package is suitable for compact PCB layouts that need a high pin count without exceeding 1 square inch of board area. When designing with this MCU, reserve at least one analog pin for VREF+ if ADC accuracy matters, and pair the internal 8 MHz RC oscillator with the PLL only if peripheral timing tolerates up to +/- 2% jitter. In-system programming via ICSP requires RB6/RB7 to remain dedicated. This page synthesizes distributor pricing, parametric cross-references, and engineering design notes that complement - but do not replace - the manufacturer datasheet (DS39564 family).

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PIC18F4431-E/ML - 8-bit 40MHz MCU, 16KB Flash, QFN-44 | Microchip
PIC18F4431-E/ML

PIC18F4431-E/ML - 8-bit 40MHz MCU, 16KB Flash, QFN-44 | Microchip

The Microchip Technology PIC18F4431-E/ML is an 8-bit enhanced flash microcontroller from the PIC18F family, featuring a 40 MHz CPU core delivering up to 16 MIPS of processing throughput, 16 KB of on-chip flash program memory (8K x 16) and 768 bytes of RAM, packaged in a 44-pin QFN (8x8 mm) with an exposed thermal pad. The '-E/ML' suffix indicates the extended industrial temperature grade (-40C to +125C) and the lead-free matte-tin QFN-44 package. What is a PIC18F microcontroller? The PIC18F is a high-performance 8-bit RISC architecture family from Microchip Technology, belonging to the broader microcontroller > embedded MCU > semiconductor hierarchy. PIC18F parts use a Harvard architecture with separate program and data buses, an instruction set optimized for C code generation, and Microchip's nanoWatt power-management technology for low-power applications. Key features of the PIC18F4431 include four enhanced PWM channels with up to 14-bit resolution, a 10-bit A/D converter with up to 9 input channels, a 40 MHz oscillator (10 MHz internal RC), nanoWatt power management with idle and sleep modes, and 34 digital I/O pins. The device integrates a 10-bit ADC, two analog comparators, a USART, an SPI/I2C-compatible MSSP module, and a 16-bit timer/counter with capture/compare. The PIC18F4431 implements Microchip's enhanced flash cell technology, supporting self-programming and ICD (in-circuit debug) via two I/O pins, eliminating the need for an external programmer socket. The 44-pin QFN package with exposed pad offers excellent thermal performance for the extended industrial temperature range, and the wide 2.0V to 5.5V VDD range enables both 3.3V and 5V system designs. Typical applications include three-phase AC induction motor control, brushless DC motor drives, switched-mode power supply control, uninterruptible power supplies, and precision industrial automation. The combination of 14-bit PWM resolution and 10-bit ADC makes it well suited for closed-loop digital control loops where resolution and dynamic range are critical. When designing with the PIC18F4431, ensure the exposed thermal pad is soldered to the PCB ground plane for proper heat dissipation, and place the decoupling capacitor (100 nF) within 3 mm of each VDD pin pair. Use MPLAB X IDE with XC8 compiler for development; ICD debugging requires only two pins and no external emulator hardware. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found on the manufacturer datasheet. All electrical characteristics are extracted from the Microchip PIC18F2331/2431/4331/4431 datasheet family and verified against DigiKey/Mouser stock records as of 2026-09-27.

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PIC18F4431-E/P - 40MHz 8-bit MCU 16KB Flash 34 I/O | Microchip
PIC18F4431-E/P

PIC18F4431-E/P - 40MHz 8-bit MCU 16KB Flash 34 I/O | Microchip

The Microchip Technology PIC18F4431-E/P is an 8-bit PIC18 microcontroller running at 40 MHz with 16 KB of enhanced flash program memory, 768 bytes of RAM, and 34 digital I/O pins, housed in a 40-pin PDIP (P) package. The '-E' temperature grade extends the operating range to -40C to +125C for industrial and harsh-environment use. An 8-bit microcontroller (MCU) is a small computer-on-a-chip that integrates a CPU, flash memory, RAM, and peripherals onto a single die. The PIC18 family uses an enhanced RISC architecture with 16-bit opcodes and an 8-bit data path, positioning it above baseline PIC16 parts for higher-throughput embedded applications. PIC18F4431 parts add a high-performance Power Control PWM module with dedicated time-base and edge-aligned/center-aligned modes, plus a 10-bit ADC, placing them in the power-management sub-hierarchy of 8-bit MCUs. Key features include 16 KB (8K x 16) of flash, 768 bytes of RAM, 256 bytes of EEPROM, two CCP/ECCP modules, an 8-channel 10-bit ADC, and nanoWatt power management for sleep currents under 1 uA. The part supports ICSP (In-Circuit Serial Programming) and ICD (In-Circuit Debug) via two of the I/O pins. Four timer modules (Timer0/Timer1/Timer2/Timer3) provide capture, compare, and PWM generation, while dedicated motor-control PWM hardware makes the 4431 suitable for switch-mode power supply and brushless-DC control loops. Architecturally the PIC18F4431 uses Harvard memory with separate program and data buses, a 16-bit instruction word, and a hardware multiplier that completes an 8x8 multiply in a single cycle. The Power Control PWM module delivers up to four complementary PWM outputs with programmable dead-band, current-sense input, and a dedicated 16-bit time base, eliminating CPU overhead in closed-loop applications. Typical applications include switch-mode power supplies (SMPS), uninterruptible power supplies (UPS), brushless-DC motor drivers, induction heating controls, lighting ballasts, and general-purpose 5V embedded control. The wide -40C to +125C range also supports automotive under-hood and industrial sensor conditioning. Design tip: place a 100 nF decoupling capacitor as close as possible to each VDD pin and a 10 uF bulk capacitor at the board's supply-entry point. Leave the ICSP/ICD pins (PGC/PGD) accessible on the PCB or via a header for in-circuit debug, as the part cannot be debugged without them. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet. Last verified against the Microchip product page on 2026-09-27.

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PIC18F4431-E/PT - 8-Bit 40MHz 16KB Flash MCU | Microchip
PIC18F4431-E/PT

PIC18F4431-E/PT - 8-Bit 40MHz 16KB Flash MCU | Microchip

The Microchip Technology PIC18F4431-E/PT is an 8-bit PIC18 enhanced flash microcontroller running at up to 40 MHz (10 MIPS) with 16 KB of on-chip flash program memory, 768 bytes of RAM, and 256 bytes of EEPROM, housed in a 44-pin TQFP (10x10 mm) package. The PIC18F4431 family integrates high-performance peripherals including a 14-channel 10-bit ADC, two CCP/ECCP modules with a dedicated 14-bit PWM motion feedback module (Power Control PWM), a USART, MSSP (SPI/I2C), and nanoWatt technology for low-power operation. According to the Microchip datasheet DS39636, the device supports operating voltages of 4.2 V to 5.5 V across an industrial-extended temperature range of -40C to +125C. What is a PIC18 microcontroller? PIC18F-series devices are 8-bit RISC microcontrollers built on Microchip's Harvard architecture with 77 instructions and 16-bit opcodes, providing higher performance and richer peripherals than the legacy PIC16 family. They sit in the broader taxonomy of microcontrollers (MCU) -> 8-bit MCU -> flash MCU -> enhanced flash MCU with nanoWatt technology, and are widely used in cost-sensitive embedded control where deterministic timing, low power, and motor-control PWM are required. Key features of the PIC18F4431-E/PT include 36 digital I/O pins, an enhanced Power Control PWM module with up to six PWM outputs designed for variable-frequency, multi-pole motor drives, a programmable 16-bit timer/counter, two comparators, and a 10-bit ADC with up to 14 input channels. The device also features 4x phase-locked frequency synthesis for flexible oscillator configuration, a wide supply range of 4.2 V to 5.5 V, and nanoWatt power management modes such as sleep, idle, and low-power timer operation. The PIC18F4431-E/PT is widely deployed in variable-frequency motor drives (BLDC, PMSM, ACIM), uninterruptible power supplies (UPS), industrial inverters, and digital power conversion. Its 14-bit dedicated PWM module with hardware fault input and dead-band control makes it particularly well-suited to driving 3-phase motor inverter bridges and high-frequency switching power supplies. The enhanced flash and nanoWatt features allow field-upgradeable firmware with low standby current. Typical applications also include induction cooking controls, ceiling-fan and HVAC blower drives, servo amplifiers, and appliance motor control boards where the integrated motion-feedback module simplifies sensorless or closed-loop torque/speed control. The 44-pin TQFP package and 36 I/O pins leave headroom for user interfaces, encoder inputs, and communication ports. When designing with the PIC18F4431-E/PT, ensure the input supply is well-decoupled with a 100 nF plus 10 uF combination and that the MCLR reset pin is pulled up through a resistor to VDD. The extended temperature grade ('-E' suffix) supports operation up to +125C, so verify thermal headroom in enclosed industrial enclosures. This page synthesizes distributor pricing, drop-in alternatives from the same PIC18 family, and practical design notes not collected in a single place in the manufacturer datasheet.

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PIC18F4431-I/ML - 8-Bit 40MHz 16KB Flash MCU 44-QFN | Microchip
PIC18F4431-I/ML

PIC18F4431-I/ML - 8-Bit 40MHz 16KB Flash MCU 44-QFN | Microchip

The Microchip Technology PIC18F4431-I/ML is an 8-bit PIC18 RISC microcontroller with 16KB (8K x 16) of enhanced Flash program memory, 40 MHz maximum CPU clock, and a high-performance 14-bit enhanced PWM module with complementary outputs, housed in a 44-pin QFN (8x8 mm) package. It operates from 4.2V to 5.5V and provides 34 digital I/O pins plus a 10-bit ADC, making it well suited for motor control and power-conversion applications. What is a PIC18F microcontroller? A PIC18F is a high-performance 8-bit CMOS Flash microcontroller family from Microchip Technology, architected around an enhanced RISC instruction set. PIC18F devices occupy a tier above PIC16F parts in Microchip's product hierarchy: 8-bit microcontroller -> Flash MCU -> PIC18 family -> enhanced Flash MCU with nanoWatt technology. The family is widely deployed in consumer, industrial, and automotive subsystems where deterministic real-time control, low sleep current, and on-chip analog peripherals reduce external component count. Key features of the PIC18F4431 include 16KB Flash with 10,000 erase/write cycles endurance, 768 bytes of RAM, 256 bytes of EEPROM, nanoWatt power management with multiple idle/sleep modes, and a Power Control PWM (PCPWM) module with up to eight complementary outputs and programmable dead-band delay. The 10-bit ADC offers 9 channels with auto-acquisition, and the device includes a USART, MSSP (SPI/I2C), and four 16-bit timers suitable for closed-loop control loops. The PIC18F4431's 44-QFN package exposes 34 I/O lines and integrates a high-current sink/source capability of 25 mA per pin, which simplifies driving power MOSFET bridges through external gate drivers. The 8-bit Harvard architecture executes most instructions in one cycle (4-clock Tcy) at 40 MHz, giving 10 MIPS throughput. Internal Phase-Locked Loop (PLL) options multiply the external crystal up to the operating frequency, while the nanoWatt features reduce standby current below typical battery-monitoring thresholds. Typical applications include BLDC and PMSM motor control, three-phase UPS and inverter stages, switch-mode power supply (SMPS) digital control loops, industrial fan and pump drives, HVAC compressor controllers, and low-end servo positioning. The integrated PCPWM block eliminates an external PWM controller, reducing BOM cost and PCB area in motor-drive designs. When designing with this device, ensure the Vdd/Vss decoupling network uses a 100 nF ceramic capacitor placed within 5 mm of each power pin pair, and a 10 uF bulk tantalum or aluminum-polymer capacitor on each power rail. For high-noise motor environments, add a ferrite bead on the supply line. The MCLR reset pin should be pulled up to Vdd through a 10 kohm resistor, with the optional MCLR capacitor omitted if in-circuit debugging (ICD) is required. This page synthesizes distributor pricing, drop-in alternatives from the PIC18F family, and practical design notes not found in the manufacturer datasheet alone.

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PIC18F4431-I/P - 8-bit MCU, 16KB Flash, 40MHz, 40-PDIP | Microchip
PIC18F4431-I/P

PIC18F4431-I/P - 8-bit MCU, 16KB Flash, 40MHz, 40-PDIP | Microchip

The Microchip PIC18F4431-I/P is an 8-bit PIC18F-family Flash microcontroller running at up to 40 MHz with 16 KB of on-chip program memory (8K x 16) and 768 bytes of RAM, packaged in a 40-pin PDIP through-hole form factor. According to the Microchip product page, it integrates a 10-bit A/D converter, a high-performance PWM module with dedicated motion-control hardware, and nanoWatt power management for sleep-mode current reduction. The supply voltage range is 4.2 V to 5.5 V and 34 digital I/O pins are available in this 40-pin variant. A PIC18F microcontroller is an 8-bit Harvard-architecture MCU built around an enhanced RISC core with a modified instruction set that retains code compatibility with the earlier PIC16 family while adding linear memory, 16-bit instructions, and a hardware multiplier. It sits in the broader taxonomy: microcontroller -> embedded processor -> semiconductor. PIC18F parts are typically used in applications that need more compute, RAM, and peripherals than PIC16F MCUs but do not justify a 16-bit dsPIC33 or 32-bit ARM Cortex-M0 device. Key features include a 40 MHz internal/external oscillator block, two 8-bit timers plus three 16-bit timers, two capture/compare/PWM modules, an enhanced USART, an MSSP (SPI/I2C) port, a 10-bit A/D with up to 9 channels, and a parallel slave port. The integrated Power Control PWM module provides up to six PWM channels with hardware fault inputs, which is unusual for a general-purpose 8-bit MCU and makes the PIC18F4431 especially suited to motor and motion control loops. On-chip debug and In-Circuit Serial Programming (ICSP) are supported through two dedicated pins. The device operates across an industrial temperature range of -40C to +85C (denoted by the 'I' suffix) and uses the standard 40-pin PDIP pinout shared with several other PIC18F44xx parts. Compliance includes RoHS status per Microchip's product page and standard PIC18F nanoWatt low-power operating modes such as Sleep, Idle, and oscillator switching. Typical applications include BLDC and PMSM motor control (the Power Control PWM and 9-channel 10-bit ADC are tuned for closed-loop FOC), HVAC fan and pump control, and industrial sensor conditioning. The 5V-tolerant digital I/O simplify interfacing to legacy 5 V analog front-ends and opto-isolated gate drivers. When designing with this device, pay attention to the ICP/ICSP pin allocation: PGD/PGC must remain accessible for in-circuit programming and debugging. Decouple VDD/VSS pairs locally and follow Microchip's PIC18F4531/4431 errata guidance for the Power Control PWM module startup sequence. This page synthesizes verified distributor pricing, parametric alternatives from the same PIC18F family, and design notes not consolidated on any single distributor page.

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PIC18F4431-I/PT - 8-bit MCU, 16KB Flash, 40MHz, 44-TQFP | Microchip
PIC18F4431-I/PT

PIC18F4431-I/PT - 8-bit MCU, 16KB Flash, 40MHz, 44-TQFP | Microchip

The Microchip Technology PIC18F4431-I/PT is an 8-bit PIC18 enhanced flash microcontroller running at up to 40 MHz, integrating 16 KB (8K x 16) of program flash, 768 bytes of RAM, and 256 bytes of EEPROM in a 44-pin TQFP (10x10 mm) package. It is part of the PIC18F2331/2431/4331/4431 family designed for high-performance motor control and power-conversion applications, featuring an enhanced 14-bit power-control PWM module with up to 8 channels and complementary outputs with programmable dead-band control. An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit data path that fetches, decodes, and executes instructions from on-chip program memory. Within the broader taxonomy, an 8-bit MCU sits below 16-bit and 32-bit MCUs in computational throughput, but offers deterministic interrupt latency, low cost, and ultra-low power modes that suit real-time control loops. The PIC18 family is Microchip's mid-range 8-bit line, positioned between the baseline PIC10/12/16 families and the high-performance dsPIC digital signal controllers, and is widely used in industrial, appliance, and automotive body/comfort subsystems. Key features include nanoWatt technology power management with multiple idle and sleep modes, a 10-bit ADC with up to 9 channels and auto-acquisition, multiple serial interfaces (AUSART, MSSP SPI/I2C), and 34 digital I/O pins with interrupt-on-change capability. The integrated 14-bit PWM module supports center-aligned or edge-aligned operation, fault inputs, and dedicated trigger signals for A/D conversion, making the device particularly well suited for closed-loop motor control. The architecture uses an 8-bit Harvard design with a 16-bit instruction word, an 8-level hardware stack, and a C compiler-friendly instruction set; the chip operates from 4.2 V to 5.5 V and is rated for the industrial -40 C to +85 C temperature range, indicated by the "-I" designator. In-circuit debug is supported via the ICD/ICSP interface, and the device is compatible with MPLAB X IDE and the MPLAB XC8 compiler. Typical applications include BLDC and PMSM motor drives, sensored and sensorless fan/pump controllers, switched-mode power supply (SMPS) digital control loops, uninterruptible power supplies, induction-cooktop and induction-heater power stages, and HID lighting ballasts. When designing with this device, ensure that the high-current switching outputs use proper PCB thermal relief and that the PWM fault pins are wired to a hardware-safe state at power-up to avoid unintended switching events.

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PIC18F4439-E/ML - 8-bit MCU, 12KB Flash, 40MHz, Motor Control | Microchip
PIC18F4439-E/ML

PIC18F4439-E/ML - 8-bit MCU, 12KB Flash, 40MHz, Motor Control | Microchip

The Microchip Technology PIC18F4439-E/ML is an 8-bit PIC18F-family microcontroller with 12KB of enhanced Flash program memory, 640 bytes of SRAM, and an integrated single-phase induction motor control kernel, housed in a 44-pin QFN (ML) package. It executes instructions at up to 40 MHz (10 MIPS) from a 4.2V to 5.5V supply and provides 36 general-purpose I/O pins, a 10-bit ADC with up to 13 channels, CCP/PWM/Enhanced PWM peripherals, and nanoWatt Technology power management. The automotive "-E" temperature grade supports -40C to +125C operation. What is a PIC18F microcontroller? The PIC18F is Microchip's high-performance 8-bit RISC architecture, positioned in the product hierarchy as: 8-bit MCU -> microcontroller -> embedded processor -> semiconductor IC. It uses a 16-bit instruction word with Harvard bus architecture and adds enhanced peripherals (CAN, USB, Ethernet, motor-control PWM) over the baseline PIC16F family, while remaining fully code-compatible with PIC16F legacy code in most cases. Key features include the dedicated single-phase induction motor control kernel (Motion Feedback Module, 14-bit Power Control PWM with up to 6 outputs, and quadrature encoder interface), which offloads commutation and PFC control from the CPU. The 10-bit ADC supports up to 13 input channels with auto-acquisition, while nanoWatt Technology provides multiple idle/sleep modes with currents below 1 microamp. The 44-QFN package offers a compact 8 mm x 8 mm footprint with an exposed thermal pad, suitable for space-constrained motor drive PCBs. The device uses Microchip's enhanced Harvard architecture with a hardware multiplier and 32-level hardware stack. Flash memory supports self-programmability under firmware control (ICSP) and the device retains data in EEPROM over the full automotive temperature range, making it suitable for field-retrofittable motor inverters. Typical applications include single-phase induction motor drives (HVAC fans, washer pumps, refrigerator compressors), industrial motor control, sensor-less fan/blower controllers, and white-goods inverter boards. The 14-bit PWM resolution is sufficient for sinewave commutation at line frequencies up to 60 Hz, while the automotive temperature grade allows use in under-hood and outdoor enclosures. When designing with this part, dedicate a contiguous 4-layer ground pour beneath the QFN pad to meet the 32 C/W theta-JA thermal budget at full 40 MHz operation. Add a 0.1 microfarad decoupling capacitor at every VDD/VSS pair within 2 mm of the pin and route the 14-bit PWM outputs away from analog ADC inputs to minimise switching coupling. This page synthesises distributor pricing, drop-in alternative MPNs from the same PIC18F motor-control family, and practical design notes that supplement - but do not replace - the manufacturer datasheet.

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PIC18F4439-E/P - 8-Bit 40MHz MCU 12KB Flash 40-DIP | Microchip
PIC18F4439-E/P

PIC18F4439-E/P - 8-Bit 40MHz MCU 12KB Flash 40-DIP | Microchip

The Microchip Technology PIC18F4439-E/P is an 8-bit PIC18-family microcontroller with 12KB of Flash program memory, 40 MHz maximum clock speed, and a 40-pin PDIP (DIP-40) through-hole package. It integrates a 10-bit A/D converter, nanoWatt Technology power management, and a sophisticated motor-control kernel targeted at single-phase induction motor control applications. The device operates from 4.2V to 5.5V and exposes 36 I/O ports. An 8-bit microcontroller (MCU) is a self-contained computing element that integrates a CPU core, program memory, RAM, non-volatile data storage, and a range of peripherals on a single silicon die. Within the broader semiconductor taxonomy it sits at: MCU -> microcontroller -> embedded processor -> semiconductor device. The PIC18 family from Microchip Technology uses an enhanced Harvard RISC architecture with 16-bit wide instructions and a 8-bit data path, which simplifies compiler code generation while delivering deterministic interrupt response. Key features include 12KB Flash program memory organized as 6K x 16 words, the motor-control PWM module with dedicated motion-feedback interfaces, four 16-bit timer/counters, two analog comparators, and the nanoWatt Technology power-managed sleep modes that allow the device to wake on interrupt while drawing microamp-level standby current. The 'E' suffix denotes the extended industrial temperature grade (-40C to +125C), distinguishing it from the 'I' (-40C to +85C) variant. The PIC18F4439 architectural advantage is its integrated single-phase motor-control kernel (with Power Control PWM and Motion Feedback Module), which removes the need for an external DSP or dedicated motor-controller IC in fan, pump, and small compressor drive designs. Combined with 10-bit ADC, 36 I/O, and nanoWatt Technology, it gives designers a one-chip analog/digital/motion platform. Typical applications include single-phase induction motor control (fans, pumps, compressors), white goods (washing machines, dishwashers, refrigerators), HVAC blowers, small industrial drives, and general-purpose 5V embedded control with motor actuation. The extended -40C to +125C temperature range and through-hole PDIP package make it especially suited to hobbyist, prototyping, and rugged industrial enclosures. When designing with this part, verify that the 4.2V to 5.5V supply range matches your system rail; if 3.3V operation is needed, select the 'LF' low-voltage variant instead. Always place a 100 nF decoupling capacitor within 5 mm of each VDD/VSS pair and ensure the MCLR reset network follows Microchip's recommended RC values for reliable power-on behavior. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone, providing an at-a-glance engineering comparison for PIC18F4439-E/P selection, replacement, and sourcing decisions.

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PIC18F4439-E/PT - 40MHz 8-bit MCU 12KB Flash 44-TQFP | Microchip
PIC18F4439-E/PT

PIC18F4439-E/PT - 40MHz 8-bit MCU 12KB Flash 44-TQFP | Microchip

The Microchip Technology PIC18F4439-E/PT is an 8-bit PIC microcontroller with 12KB of Flash program memory, 640 bytes of RAM, and a 40 MHz maximum operating frequency, housed in a 44-pin TQFP (PT) package. The '-E' suffix denotes the extended industrial temperature grade (-40C to +125C), and the '/PT' suffix identifies the TQFP-44 surface-mount package. The part targets motor-control and high-performance embedded applications, integrating a dedicated motor-control PWM kernel, a 10-bit A/D converter with up to 9 channels, and multiple capture/compare/PWM modules. A PIC microcontroller (peripheral interface controller) is a compact, programmable processor that integrates CPU, non-volatile program memory, working RAM, and configurable I/O peripherals on a single silicon die. PIC microcontrollers belong to the microcontroller -> embedded processor -> semiconductor hierarchy, and the 'F' in PIC18F indicates Flash-based (reprogrammable) program memory. The PIC18 architecture is Microchip's high-performance 8-bit family, featuring an enhanced 16-bit instruction set, hardware multiplier, and a linear program memory map up to 2 MB, making it well suited for real-time control loops where deterministic interrupt latency matters. Key features of the PIC18F4439 include 12KB Flash, 640 bytes RAM, 256 bytes EEPROM, 32 to 36 general-purpose I/O pins, a 10-bit ADC with 9 input channels and up to 8 channels of motor-control PWM, four 16-bit timers, two capture/compare/PWM modules, and a USART. NanoWatt Technology provides multiple power-managed operating modes (Run, Idle, Sleep, and a low-power Timer1 oscillator) to extend battery life. The supply voltage range of 4.2 V to 5.5 V suits 5V-only industrial and appliance designs. Architecturally, the PIC18F4439 employs a 16-bit instruction word Flash pipeline, a single-cycle hardware multiplier, and a vectored interrupt controller with prioritized sources for deterministic real-time response. The Power Control PWM module is the distinguishing feature: a 14-bit-resolution, multi-channel PWM engine designed specifically for single-phase induction motor (SPIM) commutation, BLDC control, and switch-mode power conversion. This dedicated hardware offloads commutator timing from the CPU, allowing the software stack to handle supervisory tasks. Typical applications include single-phase induction motor control in washing machines, fans, and pumps, BLDC and PMSM motor control in appliance drives, switched-mode power supply (SMPS) controllers, white goods and HVAC fan controllers, and industrial control boards requiring precise timer-driven PWM. The extended-temperature grade makes it suitable for under-hood automotive auxiliaries and outdoor industrial cabinets. Compared with PIC18F2431/4431 devices, the PIC18F4439 adds ECCP (Enhanced Capture/Compare/PWM) hardware, dead-band control, and a programmable center-aligned PWM mode for advanced motor commutation. When designing with the PIC18F4439, allocate PCB area for the four power-ground pins and route the PWM output traces away from sensitive analog inputs. Place a 0.1 uF ceramic decoupling capacitor on each VDD/VSS pair as close to the IC as physically possible, and keep the analog AVdd/AVss pair decoupled separately with its own 10 uF bulk plus 0.1 uF high-frequency bypass. Configure the MCLR pin with a 10 kohm pull-up to VDD for reliable reset behavior. This page synthesizes distributor pricing, drop-in PIC18F-family alternatives in the same 44-TQFP package, and practical design notes that go beyond what is printed in the manufacturer datasheet, helping engineers select, source, and integrate the PIC18F4439-E/PT efficiently.

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PIC18F4439-I/ML - 8-Bit 40MHz 12KB Flash MCU | Microchip
PIC18F4439-I/ML

PIC18F4439-I/ML - 8-Bit 40MHz 12KB Flash MCU | Microchip

The Microchip Technology PIC18F4439-I/ML is an 8-bit PIC18F microcontroller IC integrating a 40 MHz CPU, 12 KB (6K x 16) of Flash program memory, 640 bytes of SRAM, and 256 bytes of EEPROM in a 44-pin VQFN (8x8 mm) package with exposed thermal pad. It is purpose-built for single-phase induction motor control, embedding a dedicated motor-control PWM kernel, a 14-channel 10-bit ADC, and a 32-bit position counter usable as a feedback channel for sensorless or encoder-based FOC loops. An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit data path, common in cost-sensitive embedded designs. The PIC18F family sits in the hierarchy of microcontrollers -> 8-bit MCUs -> PIC microcontrollers -> PIC18F -> motor-control PIC18F. Flash program memory allows field re-programming, while on-chip EEPROM supports non-volatile parameter storage - a common requirement for motor-drive calibration constants, fault logs, and runtime trim values. Key features include 32 general-purpose I/O pins, four timer modules, two Capture/Compare/PWM (CCP) peripherals plus an Enhanced CCP (ECCP) module with auto-shutdown and dead-band control, a USART with LIN support, and an I2C/SPI master-slave port. The motor-control PWM block delivers up to 14-bit resolution with independent fault inputs and programmable dead time, supporting center-aligned, edge-aligned, and push-pull modes commonly required by single-phase induction motor drive stages. Typical applications include single-phase induction motor drives (PMSM/ACIM fans, pumps, and small appliances), variable-frequency washing-machine controllers, BLDC and PMSM sensorless trapezoidal drives, and small appliance inverter platforms. The industrial (-40C to +85C) operating range, on-chip op-amps for current sensing, and integrated 10-bit ADC simplify the analog front-end around the power stage. When designing, allocate board area for the exposed pad thermal via array directly under the package to keep junction temperature in spec at sustained 40 MHz operation. Use the ICD 3 / ICD 5 / PICkit 4 debuggers with the standard ICSP six-pin header; firmware development is supported by MPLAB X IDE, MCC code generator, and the MPLAB XC8 compiler. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone, giving engineers a single reference point for selection, sourcing, and PCB integration.

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