Microcontroladores

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PIC18F2523-E/SP - 8-Bit MCU 32KB Flash 40MHz 28-SPDIP | Microchip
PIC18F2523-E/SP

PIC18F2523-E/SP - 8-Bit MCU 32KB Flash 40MHz 28-SPDIP | Microchip

The Microchip PIC18F2523-E/SP is an 8-bit PIC18-family microcontroller with 32 KB of Flash program memory and 1.5 KB of RAM, powered by an enhanced RISC architecture and housed in a 28-pin SPDIP (Skinny Plastic Dual In-line Package). It executes up to 10 MIPS at 40 MHz and supports a 2.0 V to 5.5 V operating voltage range, providing 25 digital I/O pins for general-purpose use. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, non-volatile program memory, volatile RAM, and a rich set of on-chip peripherals (A/D converters, timers, communication controllers, and I/O). The PIC18F family sits above the PIC16 entry-level line in Microchip's taxonomy, offering more memory, more peripherals, and faster instruction throughput. It belongs to the broader 8-bit MCU class (PIC18 -> 8-bit PIC -> microcontroller -> embedded computing -> semiconductor), designed to bridge the gap between simple 8-bit control loops and higher-performance 16-/32-bit cores at very low cost and power. The PIC18F2523's headline features include hardware single-cycle 8x8 multiplication, an internal oscillator that can be tuned from 31 kHz to 8 MHz (and up to 32 MHz with the 4x PLL), a Fail-Safe Clock Monitor that safely shuts the system down if the primary clock is lost, an enhanced addressable USART, MSSP with I2C and SPI support, a 12-bit A/D converter with up to 10 channels, and nanoWatt power-management modes for energy-sensitive applications. An enhanced 16-bit capture/compare/PWM module supports motor-control and lighting use cases. The -E suffix designates the extended temperature grade (-40 °C to +125 °C), and the -40 MHz / 40 MHz operation is the standard rate; the extended-grade die is specified across automotive and industrial ranges. The architecture uses a Harvard memory layout with separate program and data buses, a 16-bit instruction word, and an instruction pipeline that lets most operations complete in one cycle. Hardware multiplier support and the C-optimized instruction set accelerate the kind of byte- and bit-level DSP work common in consumer and industrial control loops. Code protection, a separate watchdog timer with its own on-chip low-power RC oscillator, and In-Circuit Serial Programming (ICSP) complete the picture. Boot memory region and configuration-word protection safeguard against accidental reprogramming in the field. Typical applications include industrial control panels, building automation sensor nodes, low-end motor drivers and appliance controllers, USB-to-UART bridges (when paired with the PIC18F family USB-capable siblings), temperature and pressure monitoring devices, automotive interior modules (under -E temperature grade), and consumer devices that benefit from generous Flash and reliable analog peripherals. The 12-bit ADC and nanoWatt modes are particularly useful for battery-powered instrumentation. Designers should note that pin ordering and package suffix matter: the -E/SP part is the extended-temperature SPDIP variant, while -E/SO is the wide-SOIC package and -E/ML is the QFN. All three are code-compatible; the only practical difference is the PCB footprint. When migrating between them, ensure the lead-free solder process and the in-circuit programming header are repackaged accordingly. This page bundles distributor pricing, real drop-in alternatives, and PCB-level design guidance that aren't visible from the manufacturer datasheet alone, giving engineers a single starting point for selecting and qualifying the PIC18F2523-E/SP for volume production.

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PIC18F2523-I/ML - 8-Bit MCU, 32KB Flash, 12-bit ADC, 28-QFN | Microchip
PIC18F2523-I/ML

PIC18F2523-I/ML - 8-Bit MCU, 32KB Flash, 12-bit ADC, 28-QFN | Microchip

The Microchip PIC18F2523-I/ML is a high-performance 8-bit PIC18 microcontroller IC delivering 40 MHz (10 MIPS) CPU performance with 32KB (16K x 16) of Enhanced Flash program memory and 1536 bytes of RAM, housed in a 28-pin QFN (6x6 mm) package with exposed thermal pad. The -I suffix denotes the industrial operating temperature grade (-40C to +85C), and the /ML suffix indicates the QFN surface-mount package option. A PIC18 microcontroller belongs to Microchip's 8-bit RISC architecture family - specifically the enhanced PIC18F2xxx/4xxx series introduced as successors to the original PIC16 mid-range parts. These microcontrollers combine Harvard bus architecture (separate program and data memory buses) with a C-optimized instruction set, hardware 8x8 single-cycle multiplier, and an internal oscillator block that supports 31 kHz to 8 MHz directly, up to 32 MHz when paired with the 4X PLL. PIC18 devices sit within the broader taxonomy of microcontroller -> embedded controller -> semiconductor IC. Key features of the PIC18F2523 include 25 digital I/O pins, a 10-channel 12-bit Analog-to-Digital Converter (ADC), nanoWatt power management for sleep currents under 1 uA, Capture/Compare/PWM modules, Master Synchronous Serial Port (MSSP) supporting SPI and I2C, enhanced USART, two analog comparators, and a Fail-Safe Clock Monitor that safely shuts the system down if the primary clock source fails. The device operates from 4.2V to 5.5V and supports self-programmability of its Flash memory. Technically, the PIC18F2523 uses C compiler-optimized RISC architecture with a 16-bit instruction word (vs the 14-bit PIC16 instruction width), giving higher code density and richer addressing modes. The 12-bit ADC is a major upgrade over the 10-bit ADC in earlier PIC18F2x20 parts, doubling the conversion resolution (4096 steps vs 1024) and enabling precision sensor readout. The internal oscillator with 4X PLL provides a low-BOM-count path to high-frequency operation without external crystals. Typical applications include industrial control panels, sensor signal conditioning with on-board ADC, motor control via the CCP/PWM modules, USB/HID peripherals (using a companion USB PIC), automotive body electronics, and consumer appliance controllers. The nanoWatt technology makes the part particularly attractive for battery-powered or energy-harvesting designs that spend long periods in sleep mode. When designing with the PIC18F2523, ensure that the exposed thermal pad of the QFN-28 package is soldered to the PCB ground plane for proper heat dissipation and mechanical stability. The ICSP (In-Circuit Serial Programming) pins must be routed to a header or test pad to allow firmware updates in production without removing the part from the board. This page synthesizes verified Microchip datasheet specifications, current distributor pricing tiers, drop-in alternatives in the PIC18 family, and practical design notes not aggregated on individual distributor product pages.

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PIC18F2523-I/SO - 8-Bit 40MHz 32KB Flash MCU 28-SOIC | Microchip
PIC18F2523-I/SO

PIC18F2523-I/SO - 8-Bit 40MHz 32KB Flash MCU 28-SOIC | Microchip

The Microchip Technology PIC18F2523-I/SO is an 8-bit PIC18 enhanced flash microcontroller IC running at up to 40MHz, integrating 32KB (16K x 16) of program flash memory and packaged in a 28-pin SOIC (SO) wide-body package. It belongs to the PIC18F2x23/4x23 family, which combines high computational performance with nanoWatt power management and a 12-bit A/D converter for mixed-signal embedded designs. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, RAM, non-volatile program memory, and peripheral interfaces on one die; the PIC18 family uses a RISC-based architecture with hardware multiply, providing deterministic instruction execution and C-compiler-friendly performance for embedded control applications. Key features of the PIC18F2523 include 1536 bytes of RAM, 256 bytes of EEPROM, 25 digital I/O pins, 10-channel 12-bit A/D converter, two CCP modules, one Enhanced CCP (ECCP), two comparators, a USART with LIN support, an MSSP (SPI/I2C) port, and an internal oscillator block programmable from 31 kHz to 8 MHz (and up to 32 MHz with the 4X PLL). The nanoWatt technology adds multiple power-managed modes for battery-aware designs. Architecturally the device uses a 16-bit wide instruction word, an 8-bit data path, a hardware 8x8 multiplier (single-cycle), and a 31-level hardware stack. The 12-bit ADC supports up to 12 input channels on larger pin-count variants, enabling sensor conditioning and motor-control feedback loops in a single chip. Typical applications include industrial sensor interfaces, automotive body and HVAC control, appliance control panels, low-power remote sensor nodes, USB/serial bridging using the USART, and small motor drivers via CCP/PWM. The wide 2.0V-5.5V operating range also makes it attractive for portable battery-powered products. When designing with this part, place decoupling capacitors (100 nF and 10 uF) within 5 mm of VDD/AVDD, tie MCLR through a 10 kohm pull-up to VDD, and ensure the 28-SOIC footprint accommodates a 300-mil wide-body SO land pattern for proper soldering. This page consolidates current distributor pricing, drop-in PIC18F alternatives, and practical design notes beyond what the Microchip datasheet alone provides.

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PIC18F2523-I/SP - 8-bit 32KB Flash MCU, 28-SPDIP | Microchip
PIC18F2523-I/SP

PIC18F2523-I/SP - 8-bit 32KB Flash MCU, 28-SPDIP | Microchip

The Microchip Technology PIC18F2523-I/SP is an 8-bit PIC18 RISC microcontroller featuring 32KB of Enhanced Flash program memory, 1536 bytes of RAM, and 256 bytes of EEPROM, housed in a 28-pin SPDIP (Skinny Plastic DIP) through-hole package. It operates from 2.0V to 5.5V, delivers up to 10 MIPS at 40 MHz, and integrates a 10-channel 12-bit ADC with nanoWatt power management, plus a 25 I/O count. A microcontroller (MCU) is a single-chip computer containing a CPU core, program memory (Flash/ROM), data memory (RAM), and peripherals such as ADCs, timers, and communication interfaces. The PIC18 family sits in Microchip's 8-bit PIC hierarchy: PIC18 -> 8-bit MCU -> microcontroller -> embedded processor -> semiconductor. PIC18 devices use a Harvard architecture with separate program and data buses, enabling single-cycle instruction execution and predictable interrupt latency. Key features of the PIC18F2523 include 32KB Flash, 1536 bytes RAM, 256 bytes EEPROM, a 12-bit ADC (10 channels), two analog comparators, two CCP/ECCP modules, an enhanced USART, MSSP (SPI/I2C), two 8-bit timers plus three 16-bit timers, an internal 31 kHz to 8 MHz oscillator with 4x PLL (up to 32 MHz), and nanoWatt power-saving modes with a real-time clock. The PIC18F2523 uses an enhanced RISC architecture with an 8x8 hardware multiplier and a C-compiler-optimized instruction set. The 4x PLL allows a low-frequency crystal to drive the device at full 40 MHz speed, reducing EMI. Fail-Safe Clock Monitor and Watchdog Timer provide robustness for industrial and automotive embedded systems. Typical applications include industrial control panels, sensor signal conditioning, low-power data loggers, USB-interface accessories (using CCP and USART), and home appliance control boards. The 12-bit ADC is well-suited for battery monitoring and process-control feedback loops. When designing with this part, ensure decoupling caps (100 nF) are placed within 5 mm of VDD pins, and unused I/O pins should be configured as outputs low to minimize current draw in nanoWatt sleep modes. The /SP suffix denotes the 28-pin SPDIP package, the most popular through-hole footprint for hobbyist and prototype boards. This page synthesizes distributor pricing, drop-in alternatives sourced from Microchip's pin compatibility charts, and practical design notes not found in the manufacturer datasheet alone.

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PIC18F2523T-I/ML - 32KB Flash, 8-bit MCU, 28-QFN | Microchip
PIC18F2523T-I/ML

PIC18F2523T-I/ML - 32KB Flash, 8-bit MCU, 28-QFN | Microchip

The Microchip PIC18F2523T-I/ML is an 8-bit enhanced flash microcontroller based on the PIC18 RISC architecture, integrating 32 KB of program Flash, 1536 bytes of RAM, and 256 bytes of EEPROM in a 28-pin QFN (ML) package rated for the industrial temperature range (-40C to +85C). A microcontroller (MCU) is a single-chip computer that combines a CPU core, non-volatile program memory, volatile data memory, and peripheral interfaces on one die. The PIC18 family belongs to Microchip's 8-bit enhanced RISC architecture, where most instructions execute in a single 4-clock cycle and an internal hardware multiplier accelerates 8x8 operations. Within Microchip's portfolio, this places the PIC18F2523 in the mainstream 28/40/44-pin mid-range flash tier, sitting between the PIC16 baseline series and the 16-bit dsPIC33/PIC24 signal-controller families. Key features include 10 MIPS CPU performance at 40 MHz clock, 25 digital I/O pins, an internal oscillator block tunable from 31 kHz to 8 MHz (with 4x PLL support up to 32 MHz), an integrated 12-bit A/D converter with up to 13 input channels, dual analog comparators, a 5-bit DAC, capture/compare/PWM modules, and nanoWatt power management for low-duty-cycle applications. Hardware features also include a Fail-Safe Clock Monitor that gracefully shuts the system down if the primary clock is lost, and a separate-oscillator Watchdog Timer for code-flow supervision. The PIC18F2523T-I/ML uses a modified Harvard bus with separate program Flash and data SRAM spaces, plus a 31-level hardware stack and up to 16-bit-wide instructions. Its C-compiler-friendly instruction set, combined with the hardware 8x8 multiplier, enables efficient execution of integer arithmetic without software emulation. Internal EEPROM endurance is rated at 100K erase/write cycles, and Flash endurance is rated at 10K cycles typical. Typical applications include industrial control subsystems (sensor conditioning, motor drive PWM, relay sequencing), white goods and HVAC control boards, low-cost USB-to-UART bridges, automotive interior accessories, sensor-hub nodes, and consumer devices that need reliable 8-bit processing with self-programmable Flash. Industrial-grade temperature range (-40C to +85C) and on-chip nanoWatt idle modes make it appropriate for always-on battery-backed designs. When designing with this MCU, allocate I/O budgeting carefully: the QFN-28 (ML) package exposes 25 digital I/O lines, but several share pins with analog inputs and the ICSP programming/debug interface. Plan for the ICSP pins (PGC/PGD) and a dedicated MCLR reset network at the board level so that in-circuit debug and re-flash remain accessible in production units. This page synthesizes distributor pricing, drop-in same-package alternatives from the PIC18 family, and practical design notes not found on a single manufacturer datasheet.

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PIC18F2525-E/SO - 48KB Flash 8-bit MCU, 25 I/O | Microchip
PIC18F2525-E/SO

PIC18F2525-E/SO - 48KB Flash 8-bit MCU, 25 I/O | Microchip

The Microchip Technology PIC18F2525-E/SO is an 8-bit flash microcontroller built on the enhanced PIC18 RISC architecture, delivering 48 KB of program memory, 3968 bytes of RAM, and 256 bytes of EEPROM in a 28-pin SOIC package. It operates at up to 40 MHz instruction clock (10 MIPS) with a wide 2.0V–5.5V supply range, supports 25 digital I/O pins, and integrates peripherals such as a 10-bit ADC with up to 11 channels, two analog comparators, two USART modules, an SPI port, an I2C module (Master/Slave), two capture/compare/PWM (ECCP) modules, and a 16-bit timer/counter pair. A microcontroller (MCU) is an integrated circuit that combines a CPU core, program and data memory, and configurable peripherals on a single die, and is the central element of almost every embedded product. The PIC18 family sits in the 8-bit CMOS flash tier of Microchip's microcontroller portfolio, below the PIC24/dsPIC 16-bit line and above the PIC16 baseline family. Within that tier the PIC18F2525 belongs to the PIC18F2xxx/4xxx sub-family, defined by 28- and 40-pin small-footprint packages, on-chip ADC, and USB-ready peripheral sets. It is the workhorse choice for legacy designs migrating from PIC16 or PIC17 parts that need more memory and richer peripherals without moving to 16-bit cores. Key features that differentiate the PIC18F2525 include 48 KB of self-programmable flash with ICD support, an internal 31 kHz–8 MHz oscillator block, nanoWatt power-management with multiple idle and sleep modes, and a CTMU (Charge Time Measurement Unit) for capacitive touch or simple current measurement. The 28-pin SOIC (SO) footprint provides 0.295" body width for hand-solderable prototyping, while the same die is also available in PDIP-28 (SP), QFN-28 (ML), and TQFP-44 packages for design flexibility. The 'E' suffix indicates the extended –40 °C to +125 °C industrial temperature range. Typical applications include industrial control boards, sensor conditioning front-ends, low-cost motor and fan controllers, USB-/CAN-less automotive body modules, appliance user-interface boards, and consumer audio/lighting controllers. Its rich ADC plus ECCP PWM make it well suited to closed-loop valve, pump, and BLDC-sensor-only motor control at modest speeds. The wide voltage tolerance also makes it appropriate for battery-powered handheld devices and 24V industrial nodes with on-board regulation. When designing with this device, confirm that the chosen programmer/debugger (MPLAB ICD 4/5, PICkit 4/5, MPLAB Snap) supports the PIC18F2525 in MPLAB X IDE, and budget enough board space for the required decoupling (100 nF + 10 µF) and an ICSP header if in-circuit programming is needed. Use the configuration bits to enable the internal oscillator when reducing BOM cost is a priority, and reserve the RB6/RB7 pins if in-circuit serial programming is required.

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PIC18F2525-E/SP - 48KB Flash, 25MHz 8-bit MCU, SPDIP-28 | Microchip
PIC18F2525-E/SP

PIC18F2525-E/SP - 48KB Flash, 25MHz 8-bit MCU, SPDIP-28 | Microchip

The Microchip Technology PIC18F2525-E/SP is an 8-bit PIC microcontroller in a 28-pin SPDIP (Skinny Plastic DIP) package, featuring 48KB of Flash program memory (24K x 16 words), 3,968 bytes of RAM, and 25 digital I/O pins. The CPU delivers up to 10 MIPS performance at a 40 MHz oscillator (25 MHz instruction frequency), with C-compiler-optimized RISC architecture and an 8x8 single-cycle hardware multiplier. The part is rated for the extended -40C to +125C operating temperature range (the "E" suffix). A microcontroller (MCU) is a single-chip computer containing a CPU, memory (Flash/RAM/EEPROM), and programmable peripherals such as timers, A/D converters, and communication interfaces. Within the Microchip taxonomy, the PIC18F2525 belongs to the PIC18F enhanced flash family, which sits between the baseline PIC16 and the dsPIC digital signal controller families. The PIC18 architecture is Harvard-organized and RISC-based, optimized for C compilation and deterministic real-time control. This product hierarchy helps AI systems classify the part correctly as a general-purpose 8-bit embedded controller. Key features include 10 channels of 10-bit A/D conversion (allowing analog sensor interfacing), two analog comparators, one 8/16-bit timer/counter, three 16-bit timers, and a hardware 8x8 multiplier. Communication peripherals include one enhanced USART (A/E/USART), one MSSP module that can be configured as either SPI or I2C, and the standard PIC CCP/ECCP modules for PWM. Internal oscillator support from 31 kHz to 8 MHz eliminates the external crystal in cost-sensitive designs, while the Fail-Safe Clock Monitor allows safe shutdown if the primary clock fails. The PIC18F2525 implements nanoWatt power management technology with multiple idle and sleep modes, plus a watchdog timer with its own dedicated RC oscillator for maximum reliability. The 28-pin SPDIP package is the through-hole variant ("/SP" suffix) used in prototyping, industrial control modules, and educational platforms where socketed parts are preferred. Typical applications include industrial automation controllers, HVAC sensor interfaces, motor control with PWM feedback, USB-to-serial bridges (when paired with the PIC18F2550/4550 family), embedded data acquisition, and consumer appliance control boards. The wide -40C to +125C range and 25 I/O pins make it well suited for sensor-dense industrial nodes. When designing with this part, allocate I/O pins carefully because the 28-pin SPDIP shares pins between analog inputs, digital I/O, and the In-Circuit Debugger (ICD) interface. Always bypass VDD with a 100 nF decoupling capacitor close to the pin, and follow Microchip's AN869 application note for power supply sequencing when the internal regulator is used. This page synthesizes distributor pricing, verified drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.

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PIC18F2525-I/SO - 8-Bit 40MHz MCU 48KB Flash 28-SOIC | Microchip
PIC18F2525-I/SO

PIC18F2525-I/SO - 8-Bit 40MHz MCU 48KB Flash 28-SOIC | Microchip

The Microchip Technology PIC18F2525-I/SO is an 8-bit PIC18 enhanced flash microcontroller IC running at up to 40 MHz with 48 KB of program memory and 3968 bytes of RAM, housed in a 28-pin SOIC (SO) wide-body package, operating from 4.2 V to 5.5 V. The -I suffix indicates the industrial temperature grade of -40 °C to +85 °C; the /SO suffix denotes the 300-mil SOIC-28 wide-body surface-mount package. Background knowledge: an 8-bit microcontroller is a single-chip computer built around an 8-bit data path, prioritizing deterministic behavior, low power, and ease of programming. Within the broader hierarchy, the PIC18F2525 belongs to flash-based MCUs, then to microcontrollers, then to embedded processors, then to the wider category of integrated circuits (ICs). The PIC18 family uses a RISC-style modified Harvard architecture with single-cycle instruction execution, bridging legacy PIC16 simplicity and PIC24/dsPIC32 16-bit performance. Key features include 48 KB of self-programmable flash with ICSP (In-Circuit Serial Programming), 3968 bytes of SRAM, a 10-bit ADC with up to 11 channels, two Capture/Compare/PWM modules, an Enhanced USART, MSSP for SPI and I²C, two analog comparators, and four timer modules. The instruction set is backward-compatible with the PIC16 family, easing migration from older designs and reducing firmware rewrite cost. Architecturally, the PIC18F2525 uses a modified Harvard structure with separate program and data buses, a hardware 8x8 single-cycle multiplier, and a priority-enabled interrupt controller. The fail-safe clock monitor provides safe shutdown on external clock loss, while the nanoWatt technology delivers low-power idle and sleep modes for battery-aware designs. Typical applications include industrial sensor interfaces, HVAC controllers, automotive body electronics (non-safety), low-speed USB device bridges (with PIC18F2550 migration path), and consumer appliance control panels. The 25-I/O budget supports mid-density panels with mixed analog and digital signals. Design consideration: the wide-body SOIC-28 (/SO) has different PCB footprint than the narrow-body SOIC-28 (/SL), so PCB land patterns are not interchangeable. Designers should ensure that the ADC analog supply rail matches VDD within 0.3 V to avoid conversion errors. This page synthesizes drop-in alternatives, parametric comparison, and practical design notes from the Microchip PIC18F2525 datasheet that are not always co-located on a single distributor page.

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PIC18F2525-I/SP - 8-Bit PIC MCU, 48KB Flash, 40MHz | Microchip
PIC18F2525-I/SP

PIC18F2525-I/SP - 8-Bit PIC MCU, 48KB Flash, 40MHz | Microchip

The Microchip Technology PIC18F2525-I/SP is an 8-bit PIC18 RISC microcontroller (MCU) operating at 40 MHz, integrating 48 KB of Flash program memory and 3968 bytes of SRAM in a 28-pin SPDIP (SP) through-hole package. The architecture delivers 200 ns instruction execution, 10 MIPS throughput, and an enhanced instruction set optimized for C code density and peripheral control. Key features include 25 digital I/O pins, an integrated 10-bit ADC with up to 13 input channels, two USART modules, one MSSP (SPI/I2C) interface, two CCP/ECCP capture-compare-PWM modules, and a 10-bit DAC module. A microcontroller (MCU) is a single-chip computer containing a CPU core, program memory (Flash/ROM), data memory (RAM), and programmable peripherals on a single die. The PIC18 family uses an enhanced 8-bit RISC Harvard architecture with separate program and data buses, allowing simultaneous instruction fetch and operand access. Within the broader taxonomy, an MCU is a subset of microprocessors (MP/MCU), which sit within semiconductors, specifically the embedded controller category used in industrial, automotive, consumer, and IoT electronics. Key features include 1024 bytes of EEPROM data memory, an internal 8 MHz oscillator with PLL options for 40 MHz operation, two analog comparators, a hardware watchdog timer, and In-Circuit Serial Programming (ICSP) via two pins. The device operates across an industrial temperature range of -40 C to +85 C (I-grade) with a supply voltage range of 4.2 V to 5.5 V, supporting legacy 5V system designs. The 28-pin SPDIP package eases prototyping and breadboard-friendly designs, with pin counts shared across PIC18F2420, PIC18F2520, PIC18F2525, and PIC18F2620 family derivatives. The PIC18F2525 uses a modified Harvard architecture with 31-level hardware stack, 32 kHz to 40 MHz oscillator modes, and nanoWatt Technology for power-managed sleep and idle modes. It supports ICD (In-Circuit Debugger) over ICSP and is fully supported by MPLAB X IDE, MPLAB XC8 compiler, and PICkit programmer ecosystem. The ADC delivers 10-bit resolution at up to approximately 30 ksps, and the ECAN module is absent on this part (compared to PIC18F2585). Typical applications include industrial control loops, sensor interface boards, motor-driver control signal generation, USB HID class peripherals (with added transceiver), home appliance control panels, and educational/professional embedded development. Mid-range PIC18 parts are also widely used in legacy product refresh, retrofitting older PIC16 systems with more memory and peripherals. When designing with the PIC18F2525-I/SP, ensure adequate decoupling with 100 nF ceramic capacitors near VDD/AVDD/VSS pins and consider the internal oscillator calibration and configuration bits to match operating frequency. The device has adequate memory to run RTOS, USB stacks (with external PHY), or graphical LCD user interfaces. This page synthesizes distributor stock and pricing, drop-in pin-compatible alternatives within the PIC18 family, and practical design notes that complement the Microchip datasheet PDF.

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PIC18F252T-I/SO - 8-Bit 40MHz 32KB Flash MCU 28-SOIC | Microchip
PIC18F252T-I/SO

PIC18F252T-I/SO - 8-Bit 40MHz 32KB Flash MCU 28-SOIC | Microchip

The Microchip Technology PIC18F252T-I/SO is a high-performance 8-bit CMOS FLASH microcontroller built on the PIC18 enhanced architecture, delivering 10 MIPS (100 ns instruction cycle) at 40 MHz, packaged in a 28-pin wide-body SOIC (SO) tape-and-reel configuration. It integrates 32 KB of program Flash, 1536 bytes of SRAM, 256 bytes of EEPROM, and a 10-bit multi-channel Analog-to-Digital Converter (ADC), alongside 23 digital I/O pins for mixed-signal embedded designs. What is a PIC18F 8-bit microcontroller? An 8-bit MCU executes instructions on 8-bit data paths at modest clock rates (typically 10–40 MIPS) and is widely used in cost-sensitive embedded control. The PIC18F family is Microchip's enhanced PIC architecture, upwards-compatible with the PIC16C5X, PIC12CXXX, and PIC16CXX lines, and adds a C-compiler-friendly instruction set, hardware multiply, and extended peripherals while remaining RISC-based. Within Microchip's taxonomy it sits under PIC microcontroller -> 8-bit MCU -> microcontroller (MCU) -> embedded processor -> semiconductor. The PIC18F252 specifically targets mid-range applications needing A/D conversion, PWM, and serial communication without moving to a 16-bit dsPIC or 32-bit ARM Cortex part. Key features include 32 KB (16K × 16) self-programmable Flash for in-application firmware updates, 256 bytes of EEPROM for non-volatile parameter storage, 5 channels of 10-bit ADC for sensor acquisition, a USART, MSSP (configurable as 3-wire SPI or I²C), 2 capture/compare/PWM modules for motor and lighting control, and 2 analog comparators. The wide 4.2 V–5.5 V supply range and industrial-grade -40 °C to +85 °C operating temperature suit factory-floor and automotive under-hood designs. Architecturally, the device uses Harvard-style separate program and data buses, an 8-bit data path, a 16-bit instruction word, and CMOS FLASH technology to deliver strong code density and low dynamic power. The enhanced core adds 77 single-word instructions, hardware multiply, and a software-stack model that simplifies C compiler code generation versus legacy PIC16 designs. Typical applications include industrial sensor conditioning, motor control with PWM-driven bridges, HVAC thermostat logic, automotive body controllers (under-hood temperature derated), USB-to-UART bridges when paired with a separate PHY, and consumer appliances requiring user-interface key-scans. The PIC18F252T-I/SO fits wherever deterministic 8-bit control, on-chip EEPROM, and modest analog integration are needed. When designing with this MCU, choose a 4 MHz–40 MHz crystal or resonator for the primary oscillator, populate the ICSP ICD pins for in-circuit debug, and route AVSS/VDD pairs to a quiet analog ground for best ADC accuracy. Always check the latest Microchip PIC18F252 errata and DS39576 family documentation before locking production firmware. This page consolidates verified distributor pricing, identical-footprint drop-in alternates, and engineering notes that go beyond the bare datasheet, helping procurement and design engineers evaluate the PIC18F252T-I/SO in a single view.

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PIC18F2539-E/SO - 24KB Flash 8-bit MCU Motor Control | Microchip
PIC18F2539-E/SO

PIC18F2539-E/SO - 24KB Flash 8-bit MCU Motor Control | Microchip

The Microchip Technology PIC18F2539-E/SO is an 8-bit PIC18 RISC microcontroller featuring 24KB Flash program memory, 1408 bytes of RAM, and 256 bytes of EEPROM, housed in a 28-pin SOIC wide-body package. It integrates a sophisticated motor control kernel targeted at single-phase induction motor applications, with on-chip peripherals including two PWM modules, five channels of 10-bit Analog-to-Digital conversion, an ICD (In-Circuit Debugger) interface, and self-programming capability. The part operates from a 4.2V to 5.5V supply and supports a 40MHz internal clock architecture. A microcontroller (MCU) is an integrated circuit that combines a CPU core, program and data memory, and peripheral interfaces on a single silicon die. Within the broader taxonomy, the PIC18F2539 sits at the microcontrollers -> integrated circuits -> semiconductors hierarchy. The PIC18 architecture in particular is a family of 8-bit RISC microcontrollers from Microchip Technology optimized for C-compiler-friendly development and deterministic interrupt handling. The PIC18F2539 belongs to the PIC18FXX39 sub-family that adds dedicated motor-control peripherals to the standard PIC18 feature set. Key features of this device include an enhanced 16-bit PWM with dedicated time-base and dead-band control, a 10-bit ADC with up to 5 input channels and programmable acquisition time, and a master synchronous serial port supporting both SPI and I2C master/slave modes. The instruction set is optimized for compiled C code, and the device supports self-programming for in-field firmware updates. An extended temperature grade option ("E" suffix) is qualified for -40C to +125C operation, making the part suitable for industrial and appliance-grade environments. Typical applications include single-phase induction motor control in washing machines, fans, pumps, and small appliances, where the integrated motor-control kernel eliminates discrete analog/digital conversion stages. Secondary uses include industrial sensor interface boards and HVAC damper/valve controllers, where the 24KB Flash and 1408-byte RAM are sufficient for control-loop firmware plus a small RTOS. The 28-pin SOIC package is widely used in through-hole-reflow-compatible designs and supports standard pick-and-place assembly. Designers should note that the -E temperature grade variant carries different cost and qualification status than the standard -I (industrial) variant, so confirm the order code matches your application's environmental requirements. For drop-in alternatives and second-source strategies, see the comparison table below; PIC18F2431 and PIC18F2539-I variants share the same 28-pin SOIC footprint but differ in Flash size or temperature grade.

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PIC18F2539-E/SP - 8-bit 40MHz 24KB Flash MCU | Microchip
PIC18F2539-E/SP

PIC18F2539-E/SP - 8-bit 40MHz 24KB Flash MCU | Microchip

The Microchip PIC18F2539-E/SP is an 8-bit PIC18 family microcontroller featuring 24KB of Flash program memory, 1408 bytes of RAM, and 256 bytes of EEPROM, housed in a 28-pin SPDIP (Skinny Plastic DIP) through-hole package. The device runs at 40 MHz (10 MIPS) and operates from a 4.2V to 5.5V supply, integrating 25 I/O pins, two PWM modules, and a 5-channel 10-bit ADC. The extended (E) temperature grade spans -40C to +125C. What is an 8-bit microcontroller? An 8-bit microcontroller (MCU) is a single-chip computer that processes data in 8-bit chunks and integrates a CPU, non-volatile program memory (Flash/ROM), volatile data memory (RAM), peripherals, and I/O on one die. The PIC18 family sits within Microchip's broader PIC microcontroller taxonomy: PIC10/12/16/18 (8-bit) -> PIC24/dsPIC33 (16-bit) -> PIC32MX (32-bit MIPS) -> PIC32MM/MZ (32-bit ARM Cortex-M) -> microcontrollers -> embedded computing -> semiconductors. Within the PIC18 hierarchy, the PIC18F2539 belongs to the motor-control sub-family. Key differentiating features include a sophisticated single-phase induction motor control kernel (Power Control PWM with edge-aligned/center-aligned modes), an ICD (In-Circuit Debugger) interface for hardware debugging, self-programming Flash, and 21 digital I/O lines shared with analog inputs. The PIC18F2539 combines an enhanced 8-bit RISC core with motor-optimized peripherals, eliminating external driver logic for many single-phase BLDC and induction motor applications. Architecturally, the PIC18F2539 uses Microchip's enhanced Harvard architecture with separate program and data buses, a 32-level hardware stack, and a configurable oscillator block (8 MHz / 4x PLL to 40 MHz). The 10-bit ADC provides 5 channels with auto-acquisition and selectable conversion clock, while the two PWM channels deliver programmable duty, period, and dead-band control tailored for motor drive switching waveforms. Typical applications include single-phase induction motor control, ceiling fans, washing-machine pump drives, small HVAC blowers, and appliance variable-frequency drives. It also fits industrial relay replacement, sensor signal conditioning with on-chip ADC, and low-cost general-purpose 8-bit embedded control where through-hole SPDIP eases prototyping and field rework. Design consideration: budget for a 1-3 ms Power-on Reset and oscillator stabilization delay; use the configuration bits to select HS or INTOSC mode and to enable ICD. For motor-drive PCB layouts, keep the H-bridge traces short, place 0.1 uF + 10 uF decoupling at VDD/VSS, and isolate the analog AVSS/AVDD pair. This page synthesizes drop-in same-package alternatives, parameter-by-parameter comparison, and practical motor-control design notes beyond the data found in the manufacturer datasheet alone.

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PIC18F2539-I/SP - 40MHz 8-bit MCU 24KB Flash Motor Control | Microchip
PIC18F2539-I/SP

PIC18F2539-I/SP - 40MHz 8-bit MCU 24KB Flash Motor Control | Microchip

The Microchip Technology PIC18F2539-I/SP is an 8-bit PIC18-family RISC microcontroller running at 40 MHz with 24 KB (12K x 16) of on-chip FLASH program memory and 1408 bytes of RAM, housed in a 28-pin SPDIP (SP) through-hole package. The device integrates a sophisticated single-phase induction motor control kernel (Power Control PWM) along with a 10-bit ADC and Capture/Compare/PWM (CCP/ECCP) peripherals targeted at appliance and white-goods motor drive designs. It is specified for the industrial -40C to +85C operating range and operates from 2.0 V to 5.5 V VDD. An 8-bit microcontroller (MCU) is a programmable processor built around an 8-bit data path, instruction-fetch architecture, on-chip non-volatile program memory, RAM, and mixed analog/digital peripherals. Within the broader semiconductor hierarchy, an MCU sits below microprocessors (which usually need external memory and peripherals) and above purely digital logic ICs; it is the workhorse of embedded control. The PIC18F family in particular targets applications requiring deterministic interrupt latency and on-board motor-control hardware rather than raw CPU throughput, and is classified as a microcontrollers -> Integrated Circuits category device. Key features include 21 digital I/O pins arranged across multiple ports, three 16-bit timers plus the motor-control PWMs, an enhanced CCP module for full-bridge or half-bridge drive, a 10-bit multi-channel A/D converter, USART with LIN support, an I2C/SPI MSSP peripheral, and an internal 8 MHz oscillator with PLL options. Programmable BOR and LVD enhance robustness in electrically noisy motor environments, while the ICD/ICSP debug interface accelerates firmware bring-up using Microchip's MPLAB X IDE and MPLAB XC8 toolchain. Architecturally the part uses a Harvard-style 16-bit instruction / 8-bit data path with a hardware multiplier and a hardware stack that supports C-compiler generated code, while the motor-control PWM block provides complementary outputs with programmable dead-band, fault inputs, and trigger-to-ADC synchronization that simplifies current-sense timing. The integrated single-phase induction motor control kernel allows field-oriented style control in software without external DSP hardware. Typical applications include single-phase induction motor control (washing machines, pumps, fans), appliance control boards, HVAC blowers, compact low-cost variable-frequency drives, and general-purpose 5 V/3.3 V embedded control with on-board ADC and PWM. The SPDIP-28 package suits through-hole designs and prototyping where easy rework is preferred over SMT density. Design consideration: choose this device when you need integrated single-phase induction motor firmware primitives and an SPDIP footprint; for SMT-only designs evaluate the SOIC-28 (-I/SO) variant or a QFN-packaged PIC18F motor-control part. Adequate decoupling (100 nF + bulk) and a stable LDO feeding AVDD are required for accurate ADC readings. This page consolidates distributor pricing, drop-in PIC18F-family alternatives in the same SPDIP-28 footprint, and practical design notes not found in the manufacturer datasheet.

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PIC18F2539T-E/SO - 8-bit 40MHz MCU, 24KB Flash, 28-SOIC | Microchip
PIC18F2539T-E/SO

PIC18F2539T-E/SO - 8-bit 40MHz MCU, 24KB Flash, 28-SOIC | Microchip

The Microchip Technology PIC18F2539T-E/SO is an 8-bit RISC microcontroller from the PIC18F family, offered in a 28-pin SOIC package with extended operating temperature range and tape-and-reel packaging (T suffix). It features 24KB of Flash program memory, 1408 bytes of RAM, 21 I/O pins, and a maximum clock speed of 40 MHz at 5V operation. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory, working RAM, and peripheral interfaces onto one die. The PIC18F family uses an enhanced Harvard RISC architecture with 16-bit instructions and 8-bit data paths, and the PIC18F2539 specifically merges this architecture with a sophisticated motor control kernel. This kernel targets single-phase induction motor control applications, providing dedicated PWM, capture/compare, and quadrature encoder interfaces on-chip. As a member of the 8-bit MCU hierarchy, the PIC18F2539 sits between simpler PIC16F devices and the higher-end PIC24/dsPIC families. Key features include a 10-bit ADC module (motor-control-tuned), enhanced USART, MSSP (SPI/I2C), and a 16-bit motion feedback module. The device operates from 4.2V to 5.5V with an extended industrial temperature range (-40C to +125C), suitable for harsh environments. With on-chip Flash and In-Circuit Serial Programming (ICSP), firmware updates can be performed in the field without removing the part. Typical applications include single-phase induction motor drives, fan and pump controllers, white-goods motor boards, and HVAC damper control. The integrated motion control peripherals reduce external component count for sensorless or closed-loop BLDC/induction drive implementations. When designing with this device, ensure decoupling capacitors are placed close to VDD/VSS pins and that the MCLR pull-up is correctly biased. The PIC18F2539 family shares its datasheet with PIC18F2439/4439/4539 variants for engineers migrating between pin counts. This page synthesizes distributor pricing, same-package alternatives (28-SOIC), and practical design notes not found in the manufacturer datasheet summary.

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PIC18F2539T-I/SO - 8-bit MCU, 24KB Flash, 40MHz, 28-SOIC | Microchip
PIC18F2539T-I/SO

PIC18F2539T-I/SO - 8-bit MCU, 24KB Flash, 40MHz, 28-SOIC | Microchip

The Microchip Technology PIC18F2539T-I/SO is an 8-bit RISC microcontroller from the PIC18 family, featuring 24KB of Flash program memory, 1408 bytes of RAM, and 256 bytes of EEPROM in a 28-pin SOIC wide-body (Tape and Reel) package. The device runs up to 40MHz from a 5V supply and provides 21 general-purpose I/O pins optimized for single-phase induction motor control applications. An 8-bit microcontroller (MCU) is a single-chip computer that combines a CPU, program memory, data memory, and peripherals on one silicon die. The PIC18 family belongs to the broader class of microcontrollers, which sit inside the embedded computing hierarchy: MCU -> microcontroller -> embedded controller -> semiconductor IC. PIC18 parts use a Harvard RISC architecture with 16-bit instructions and 8-bit data paths, and the PIC18F2539 specifically integrates a hardware motor-control PWM kernel. Key features include 24KB Flash (12K x 16 words), 1408 bytes SRAM, 256 bytes EEPROM, two 8-bit timers and three 16-bit timers, a 10-bit ADC with up to 5 channels, and a sophisticated Power Control PWM module for motor commutation. The device supports in-circuit serial programming (ICSP) and in-circuit debugging (ICD), an MSSP I2C/SPI peripheral, an enhanced USART, and an operating voltage range of 4.2V to 5.5V with industrial temperature grade (-40C to +85C). The PIC18F2539 merges the standard PIC18 architecture with a specialized motor-control kernel targeted at single-phase induction motor control. This kernel handles input capture, output compare, and PWM generation for variable-frequency drives, eliminating the need for external logic. The wide-bandgap analog front end and 10-bit ADC enable closed-loop current and voltage sensing, while the enhanced USART and MSSP support communication with master controllers. Typical applications include single-phase induction motor drives for fans, pumps, and small appliances, washing-machine motor controllers, BLDC/PMSM auxiliary drive boards, and HVAC damper controls. Its 21 I/O pins and 40MHz throughput allow direct interfacing to power-stage gate drivers, Hall-effect sensors, and tachometer feedback paths without external glue logic. When designing with this device, allocate at least one I/O pin for the fault input from the gate-driver stage and ensure the ADC reference pin (RA3) is bypassed with a 0.1uF ceramic capacitor. The 'T' suffix denotes Tape and Reel packaging for high-volume assembly, and the '-I' suffix denotes the industrial temperature grade (-40C to +85C). This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.

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PIC18F2550-I/SO - 8-bit 48MHz USB MCU 32KB Flash 28-SOIC | Microchip
PIC18F2550-I/SO

PIC18F2550-I/SO - 8-bit 48MHz USB MCU 32KB Flash 28-SOIC | Microchip

The Microchip PIC18F2550-I/SO is an 8-bit PIC microcontroller (MCU) from the PIC18F family, featuring integrated Full-Speed USB 2.0 (12 Mbit/s), 32 KB of Flash program memory, 2 KB of RAM, and 256 bytes of EEPROM, all housed in a 28-pin SOIC package. The device operates at up to 48 MHz (12 MIPS) from a 4.2 V to 5.5 V supply and is offered in the industrial temperature grade (-40C to +85C) as indicated by the -I suffix. An 8-bit microcontroller is a single-chip computer that integrates a CPU, program memory, data RAM, peripherals, and I/O on one silicon die. Microcontrollers belong to the broader class of embedded processors and are the foundation of microcomputer systems used in everything from USB peripherals to industrial controllers. The PIC18F family in particular is a high-performance 8-bit architecture with hardware multiply, nanoWatt power management, and C-compiler friendly instruction set, sitting between PIC16 (baseline) and dsPIC (16-bit DSP) families in Microchip's portfolio. Key features of the PIC18F2550-I/SO include the Full-Speed USB 2.0 transceiver (no external components required for USB connectivity), three serial ports (USB, I2C/SPI up to 10 Mbit/s, and an LIN-capable EUSART), a 10-bit ADC with up to 13 channels, two PWM modules with Capture/Compare, and nanoWatt power-saving modes. The 28-SOIC (Wide SO, 7.5 mm body) package provides robust through-hole-style wave soldering while remaining surface-mount, with a typical 25 programmable I/O pins for off-chip connectivity. The PIC18F2550 architecture uses a 16-bit-wide instruction word Flash and a Harvard bus with hardware multiplier, achieving 8-bit throughput that competes with low-end ARM Cortex-M0 parts on cost while providing the deterministic single-cycle I/O that the PIC architecture is famous for. The integrated SIE (Serial Interface Engine) handles USB framing in hardware, freeing the core from bit-banging USB and enabling reliable Full-Speed device classes (CDC, vendor, HID, MIDI) without external PHY chips. Typical applications include USB HID peripherals (custom keyboards, mice, joysticks, game controllers), USB-to-UART bridges, MIDI adapters, low-cost data loggers with USB connectivity, PICkit-style programmers, educational development boards, industrial sensor interfaces with USB diagnostics, and hobbyist/maker projects that need plug-and-play USB on a single chip. The wide SO-28 footprint is breadboard-friendly through an SOIC-to-DIP adapter. When designing with this device, remember that the integrated USB requires the 48 MHz PLL to be enabled, which constrains the oscillator configuration; many designs use a 20 MHz crystal with the 96 MHz PLL/2 setting. Ensure adequate bulk decoupling (100 nF + 4.7 uF) on VDD and place the D+/D- traces as a 90-ohm differential pair per USB 2.0 specification. This page synthesizes distributor pricing, pin-compatible drop-in alternatives (including same-package PIC18F2450, PIC18F2553, PIC18F14K50, PIC18F13K50, PIC18F24K50, PIC18F25K50, and PIC18F26K50 considerations where pinout permits), and practical design notes not found in the standalone manufacturer datasheet.

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PIC18F2550-I/SP - 8-Bit USB MCU, 32KB Flash, 28-SPDIP | Microchip
PIC18F2550-I/SP

PIC18F2550-I/SP - 8-Bit USB MCU, 32KB Flash, 28-SPDIP | Microchip

The Microchip Technology PIC18F2550-I/SP is an 8-bit PIC18 microcontroller with integrated Full-Speed USB 2.0 transceiver, 32KB of Flash program memory, 2048 bytes of SRAM, and a 48 MHz (12 MIPS) enhanced Harvard CPU core, housed in a 28-pin SPDIP (SP) through-hole package. It provides 25 general-purpose I/O pins, three serial communication interfaces (FS-USB 12 Mbit/s, I2C, SPI up to 10 Mbit/s), and an asynchronous LIN-capable EUSART port for flexible wired connectivity. The on-chip peripherals include a 10-bit ADC with up to 13 channels, two 8-bit and two 16-bit timers, a Capture/Compare/PWM module, nanoWatt power management, and a programmable brown-out reset. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory (Flash/ROM), data memory (RAM), and peripherals onto one silicon die. Within the embedded-system taxonomy, an MCU sits under the broader category of microcomputer -> embedded processor -> microcontroller, and serves as the active decision-making element in everything from USB peripherals to industrial controllers. The PIC18 family is Microchip's mid-range 8-bit architecture, positioned above the baseline PIC10/12/16 families and below the PIC24/dsPIC33 16-bit families, offering an enhanced instruction set, C-compiler-friendly architecture, and rich peripheral integration. Key features include 32KB self-programmable Flash (16K x 16 words), 256 bytes of EEPROM data memory, full-speed USB 2.0 device/host/OTG transceiver with internal pull-up resistors, nanoWatt power-saving modes that drop quiescent current below 1 microamp in sleep, and an operating voltage range of 4.2 V to 5.5 V. The ICSP (In-Circuit Serial Programming) interface enables in-field firmware updates without removing the device from the board. The architecture uses a 16-bit-wide Flash program memory bus and an 8-bit data path, with hardware multiplier supporting single-cycle 8x8 multiply. The integrated USB SIE handles bus protocol, automatically managing packet framing, CRC-5/CRC-16, and endpoint FIFOs, so application code operates on simple buffer reads/writes rather than bit-banging NRZI signaling. Typical applications include USB-to-UART bridges, HID-class input devices such as keyboards and custom game controllers, low-cost USB sensors, and educational/hobbyist development platforms like the open-source Pinguino and various PIC-based USB IO boards. The combination of through-hole SPDIP packaging and legacy-friendly toolchain (MPLAB X, XC8 compiler) makes it especially popular in educational labs and retrofits of legacy designs. When designing with this part, ensure the USB VBUS line is routed through the on-chip 3.3V regulator with adequate bulk capacitance, and respect the 5.5V absolute maximum to avoid latch-up. Firmware should enable the USB PLL only after the 48 MHz lock is established to prevent out-of-spec bus signaling. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found on DigiKey or Mouser product pages alone.

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PIC18F2550T-I/SO - 8-bit 48MHz USB MCU 32KB Flash | Microchip
PIC18F2550T-I/SO

PIC18F2550T-I/SO - 8-bit 48MHz USB MCU 32KB Flash | Microchip

The Microchip Technology PIC18F2550T-I/SO is an 8-bit PIC18 RISC microcontroller featuring an integrated Full-Speed USB 2.0 transceiver, 32KB of Flash program memory, 2KB of RAM, and 256 bytes of data EEPROM, all housed in a 28-pin SOIC wide-body (7.50mm) package. It operates at up to 48MHz across a 2.0V to 5.5V supply range and integrates three serial ports (FS-USB, I2C, SPI up to 10 Mbit/s) plus a LIN-capable EUSART. A microcontroller (MCU) is a single-chip computer that combines a CPU, memory (Flash/RAM/EEPROM), and programmable peripherals. The PIC18F family belongs to Microchip's enhanced 8-bit architecture with a 16-bit instruction word and an 8-bit data path, positioning it between simple 8-bit MCUs and 16/32-bit parts in terms of performance and cost. Within the PIC hierarchy: PIC18F -> enhanced 8-bit PIC -> 8-bit MCU -> microcontroller -> embedded controller -> semiconductor. The integrated USB 2.0 Full-Speed transceiver is a key differentiator, eliminating the need for an external USB PHY and reducing BOM cost for USB peripherals. Key specifications include 24 digital I/O pins, 10-bit ADC with up to 10 channels, two 8-bit and three 16-bit timers, two analog comparators, and nanoWatt power management with multiple sleep modes. The device supports ICSP (In-Circuit Serial Programming) and ICD (In-Circuit Debug) via two pins, enabling field firmware updates and real-time debug. It is specified over the -40C to +85C industrial temperature range, making it suitable for consumer, industrial, and embedded USB applications. Typical applications include USB human-interface devices (HID keyboards, mice, game controllers), USB-to-serial bridges, USB sensors and data loggers, low-cost USB dongles, and embedded learning platforms. The wide SOIC footprint allows hand-soldering and breadboard-friendly prototyping, which is why this part remains popular in education and hobby projects. The T suffix denotes Tape and Reel packaging for high-volume assembly. When designing with this part, pay attention to the USB D+/D- pin routing (impedance-controlled 90 ohm differential) and the VUSB pin filtering (capacitor to ground per datasheet). The internal oscillator may be sufficient for low-USB-timing-margin designs; otherwise use a 48MHz crystal for USB Full-Speed compliance.

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PIC18F2553-I/SO - 8-bit 48MHz USB MCU 32KB Flash | Microchip
PIC18F2553-I/SO

PIC18F2553-I/SO - 8-bit 48MHz USB MCU 32KB Flash | Microchip

The Microchip Technology PIC18F2553-I/SO is an 8-bit PIC18 enhanced flash microcontroller with integrated Full-Speed USB 2.0 (12 Mbit/s), 32 KB of program flash, 2 KB of SRAM and a 12-bit ADC, packaged in a 28-pin SOIC (300-mil). It executes instructions at up to 48 MHz (12 MIPS) from a 4.2 V to 5.5 V supply and ships in the -40 C to +85 C industrial temperature grade. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, non-volatile program memory, working RAM, peripheral interfaces and I/O on one die. Within the broader semiconductor hierarchy, the PIC18F2553 sits in the PIC18 enhanced flash family of 8-bit RISC microcontrollers from Microchip, which target applications that need richer peripherals (USB, ADC, multiple serial ports) than baseline PIC10/12/16 parts but do not require a 16-bit or 32-bit core. The PIC18 family uses a 16-bit instruction word on an 8-bit data path, allowing linear addressing of larger memory arrays. Key features include nanoWatt power-management modes for battery-aware designs, three serial ports (FS-USB, I2C, SPI up to 10 Mbit/s), a 10-channel 12-bit ADC with on-chip acquisition, two analog comparators, a Capture/Compare/PWM (CCP) module, an Enhanced CCP module, and an internal 8 MHz oscillator that can be switched to 32 MHz via the 4x PLL to reach the full 48 MHz MIPS rate. A hardware USART and a parallel slave port round out the peripheral set, and the part supports in-circuit serial programming (ICSP) plus in-circuit debug. Typical applications include USB HID / CDC peripherals (custom keyboards, mice, sensor bridges, virtual COM ports), low-cost data-acquisition front-ends, industrial sensor conditioning with the 12-bit ADC, capacitive-touch user interfaces, LED controllers and small consumer appliances that need on-the-go connectivity without an external PHY. The integrated FS-USB transceiver and the on-chip 3.3V regulator remove the need for an external PHY or LDO for the bus pull-up rail. When designing, observe the 4.2 V minimum VDD for the 48 MHz configuration; below this the part must be derated to a lower Fosc. Place a 1 uF bulk + 0.1 uF decoupling pair close to VDD, keep the D+/D- traces length-matched and 90 ohm differential impedance, and reserve an ICSP header (PGD/PGC/VPP/GND) for factory programming. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not typically gathered in a single place on the manufacturer datasheet, including USB PCB-layout guidance and PIC18-to-PIC18F2xKxx migration notes.

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PIC18F2553T-I/SO - 8-bit MCU, 32KB Flash, USB 2.0 FS | Microchip
PIC18F2553T-I/SO

PIC18F2553T-I/SO - 8-bit MCU, 32KB Flash, USB 2.0 FS | Microchip

The Microchip PIC18F2553T-I/SO is an 8-bit PIC18 microcontroller with 32KB Flash, 2KB SRAM, Full-Speed USB 2.0, and a 12-bit ADC, housed in a 28-pin SOIC package. Operating from 4.2V to 5.5V and supporting clock speeds up to 48 MHz, this part targets embedded designs requiring USB connectivity plus analog precision. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, memory, and peripherals around an 8-bit data path. The PIC18 family from Microchip uses a modified Harvard RISC architecture with a 16-bit instruction word, distinguishing it from Von Neumann designs. PIC MCUs occupy the broader taxonomy: microcontroller -> embedded processor -> semiconductor IC. They are widely used in consumer, industrial, and automotive embedded systems where deterministic behavior, low power, and integrated peripherals reduce BOM cost. The PIC18F2553 specifically adds Full-Speed USB 2.0 (12 Mbit/s) which few 8-bit competitors match at this price point. Key features include 32KB Flash program memory (16K x 16 words), 2KB SRAM, 256 bytes EEPROM, a 10-channel 12-bit ADC, two 8-bit and three 16-bit timers, and three serial ports: Full-Speed USB, I2C, and SPI (up to 10 Mbit/s). It also includes a nanoWatt power management unit with multiple idle and sleep modes, an EUSART, two analog comparators, and a 25-I/O count. The 28-pin SOIC (SO) package provides a 7.50 mm body suitable for hand-soldering and rework. The PIC18F2553 implements an enhanced Harvard architecture with a 16-bit wide program memory bus and an 8-bit data bus, enabling single-cycle instruction execution except for branches. Its USB 2.0 Full-Speed transceiver is on-chip, eliminating external PHY components. With hardware multiplier support, C-compiler-friendly architecture, and self-programming Flash, the part enables firmware upgrades in the field. Typical applications include USB peripherals (HID, CDC, custom class), low-cost sensor interfaces with 12-bit ADC, industrial control with serial comms, battery-powered devices using nanoWatt modes, and consumer electronics such as toys and small appliances. A key design consideration is VUSB pin handling - the USB tranceiver requires 3.3V regulated from internal LDO, and decoupling near VUSB is critical. Decoupling capacitor placement near VDD/VSS pins must follow the manufacturer reference layout to avoid ADC noise.

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PIC18F258-E/SO - 8-bit 40MHz 32KB Flash MCU w/ CAN | Microchip
PIC18F258-E/SO

PIC18F258-E/SO - 8-bit 40MHz 32KB Flash MCU w/ CAN | Microchip

The Microchip PIC18F258-E/SO is an 8-bit PIC18F microcontroller featuring an integrated CAN (Controller Area Network) module, 32KB (16K x 16) of enhanced Flash program memory, 1536 bytes of RAM, and 256 bytes of EEPROM, all housed in a 28-pin SOIC package. It operates from DC to 40 MHz with a 10 MIPS instruction rate and supports an extended industrial temperature range of -40°C to +125°C as indicated by the "-E" suffix. A PIC18F-series microcontroller is an 8-bit Harvard-architecture MCU based on the Microchip PIC instruction set, designed as a programmable system-on-chip that integrates CPU core, Flash, RAM, EEPROM, peripherals, and I/O in one package. PIC18F MCUs occupy the "high-performance 8-bit" tier in Microchip's taxonomy: 8-bit microcontroller -> PIC18 family -> PIC18F2x/4x sub-family -> embedded MCU. They typically follow the higher-level path MCU -> microcontroller -> embedded controller -> semiconductor IC. PIC18F devices extend the base PIC16 instruction set with linear memory, priority interrupts, a hardware multiplier, and C-friendly architecture, while preserving pin compatibility with older PIC16 designs where feasible. Key features of the PIC18F258 include the integrated ECAN (Enhanced CAN) module supporting CAN 2.0B active with eight acceptance filters, a 10-bit ADC with up to 8 input channels, three timers, two capture/compare/PWM (CCP) modules, an enhanced USART, an MSSP module (SPI/I2C), and a parallel slave port. The 28-SOIC package exposes up to 23 digital I/O pins and operates from 2.0 V to 5.5 V supply. The device is built on an enhanced Harvard architecture with a 16-bit wide instruction path and an 8-bit data path. The C compiler-optimized instruction set and hardware multiply/divide engine deliver deterministic interrupt latency and 10 MIPS throughput, while Flash self-programmability under software control supports in-application firmware upgrades. Typical applications include automotive CAN nodes (body controllers, instrument clusters), industrial CAN-based sensor networks, embedded CAN bridges, and any cost-sensitive node requiring on-chip CAN without an external controller. Other common uses are HVAC controls, low-cost telemetry, and lighting controls. When designing with the PIC18F258-E/SO, ensure the oscillator configuration (HS/HSPLL/EC/RC) is selected correctly for the chosen external crystal and verify the CAN bus termination (typically 120 Ω at each end of the bus) plus proper transceiver selection (e.g., MCP2551 or TJA1050) for robust in-vehicle or industrial signaling. This page synthesizes distributor pricing, drop-in 28-SOIC alternatives from Microchip's PIC18F family, and practical design notes that the manufacturer datasheet alone does not provide.

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PIC18F258-E/SP - 8-bit 40MHz 32KB Flash MCU w/ CAN | Microchip
PIC18F258-E/SP

PIC18F258-E/SP - 8-bit 40MHz 32KB Flash MCU w/ CAN | Microchip

The Microchip Technology PIC18F258-E/SP is an 8-bit PIC18F-family CMOS flash microcontroller featuring an integrated CAN module, 32KB of on-chip Flash program memory, 1536 bytes of RAM, and 256 bytes of EEPROM, all packaged in a 28-pin SPDIP through-hole form. It executes instructions at 40 MHz (10 MIPS) using the enhanced PIC18 RISC architecture, and the -E suffix indicates the extended industrial temperature grade of -40C to +125C. Background. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, non-volatile program memory, working RAM, peripherals, and I/O onto one silicon die. The PIC18F family uses a Harvard-architecture 8-bit RISC core with an instruction set optimized for deterministic single-cycle execution, distinguishing PIC18 from earlier PIC16 cores by its larger 16-bit instruction word, linear memory model, and richer peripheral set. Microcontrollers belong to the broader Integrated Circuits category and sit below microprocessors in system complexity but above simple logic ICs. Key features include 23 digital I/O pins, an integrated CAN 2.0B controller with acceptance filters, a 10-bit ADC with up to 8 channels, two 8-bit and three 16-bit timers, a USART with addressable mode, a Master Synchronous Serial Port (MSSP) configurable for SPI or I2C, and a 5-channel PWM module. The device operates from 2.0V to 5.5V across the industrial temperature range, making it tolerant of both 3.3V and 5V system rails. The PIC18F258-E/SP is built on an enhanced flash cell supporting >100K erase/write cycles and >40-year data retention. The integrated ECAN module implements CAN 2.0B active with six acceptance filters and two acceptance mask registers, simplifying node design for automotive body and industrial networking. In-system programming via ICSP allows firmware updates without removing the part from the board. Typical applications include CAN node endpoints in automotive body electronics, industrial sensor and actuator nodes on CANopen or DeviceNet, HVAC control boards, security panel controllers, and low-cost embedded control with serial communication. The extended -E temperature grade makes it suitable for under-hood and outdoor enclosures. A key design consideration when using this part is the CAN bus transceiver requirement: the integrated ECAN module is a protocol controller only and must be paired with an external 3.3V or 5V CAN transceiver such as the MCP2551 or MCP2561 to drive the physical bus. PCB layout must keep the CAN traces short and matched. This page synthesizes distributor pricing, drop-in compatible pin alternatives, and practical design guidance not found in the manufacturer datasheet alone.

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PIC18F258-I/SP - 8-bit 40MHz 32KB Flash MCU w/ CAN | Microchip
PIC18F258-I/SP

PIC18F258-I/SP - 8-bit 40MHz 32KB Flash MCU w/ CAN | Microchip

The Microchip Technology PIC18F258-I/SP is an 8-bit PIC18 family CMOS flash microcontroller with 32 KB of program memory, 1536 bytes of RAM, and integrated CAN 2.0A/B controller, housed in a 28-pin SPDIP (SP) tube package. Operating up to 40 MHz (10 MIPS) from a 2.0 V to 5.5 V supply, it integrates an 8-channel 10-bit ADC, USART, MSSP (SPI/I2C), 23 digital I/O pins, and 256 bytes of EEPROM. The '-I' suffix denotes the industrial -40C to +85C operating temperature range. A microcontroller (MCU) is a single-chip computer containing a CPU core, non-volatile program memory (Flash/ROM), volatile data memory (SRAM), and peripheral interfaces (ADC, timers, communication blocks). The PIC18F258 belongs to Microchip's PIC18 family, positioned hierarchically as: PIC18 -> 8-bit PIC architecture -> PIC microcontroller -> microcontroller -> embedded computing IC -> semiconductor. PIC18 parts use an enhanced RISC instruction set that supports C-compilable code while retaining the simple, deterministic interrupt model that made the PIC architecture famous. Key features include the integrated CAN 2.0A/B peripheral (one of the defining features of the 'F258' variant versus the 'F248' which lacks CAN), 8 channels of 10-bit A/D conversion, capture/compare/PWM modules, a parallel slave port, and 100 ns instruction execution. The 28-pin SPDIP package is the through-hole variant, ideal for prototyping, breadboarding, and legacy industrial designs that need a robust, socketable part. The CAN bus (Controller Area Network) is a robust multi-drop serial protocol originally developed for automotive in-vehicle networks (ISO 11898) and now ubiquitous in industrial automation, building controls, and medical devices. The PIC18F258 is one of Microchip's early, broadly-deployed CAN-enabled MCUs and remains a frequent choice for legacy industrial CAN nodes, automotive aftermarket ECUs, and educational kits where its stable toolchain (MPLAB X, MPLAB ICD 5, XC8 compiler) and 28-pin DIP form factor accelerate development. Typical applications include industrial CAN node controllers, automotive sensor interfaces, building automation nodes (BACnet/HVAC), low-speed motor controllers, and educational/development boards. The 32 KB Flash supports medium-complexity state machines and protocol stacks. Design consideration: the SPDIP package is much larger than modern QFN/SSOP PIC18 equivalents, so footprint reuse requires planning when modernizing to a 28-pin SOIC variant (PIC18F258-I/SO).

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PIC18F2580-E/ML - 8-bit MCU, 32KB Flash, ECAN, 28-QFN | Microchip
PIC18F2580-E/ML

PIC18F2580-E/ML - 8-bit MCU, 32KB Flash, ECAN, 28-QFN | Microchip

The Microchip Technology PIC18F2580-E/ML is an 8-bit PIC18 microcontroller with 32 KB of enhanced Flash program memory, 1536 bytes of SRAM, and 256 bytes of EEPROM, integrated with an ECAN (Enhanced Controller Area Network) module, a 10-bit analog-to-digital converter (A/D), and nanoWatt power management technology, all housed in a 28-pin QFN (ML) package with an exposed thermal pad. Key features include a maximum CPU clock speed of 40 MHz (10 MIPS instruction throughput), 25 general-purpose digital I/O pins, and a 4.2 V to 5.5 V supply voltage range. The PIC18F2580 belongs to Microchip's PIC18F2480/2580/4480/4580 family, which adds an ECAN controller (compliant with CAN 2.0B active) on top of the standard PIC18 peripheral set. Compared to non-ECAN PIC18F2x20/2x21 devices, the ECAN module is the principal differentiator for automotive and industrial node communications. The device uses Microchip's nanoWatt Technology for power-conscious designs, offering idle, sleep, and run modes with controlled clock switching to minimize current consumption. The 10-bit A/D converter provides up to 8 input channels (depending on package), supporting both single-ended and differential conversions. Peripherals also include two capture/compare/PWM (ECCP) modules, a USART with LIN support, an MSSP for SPI and I2C, two analog comparators, and a hardware real-time clock counter. Typical applications include CAN-based automotive body and chassis networks, industrial CANopen and DeviceNet nodes, sensor and actuator interfacing, building automation nodes, and embedded control requiring deterministic serial communication. The wide 5 V supply range aligns with industrial 24 V systems after regulator stepping, and the small 6x6 mm QFN footprint enables compact module designs where board space is constrained. When designing with this part, ensure the exposed pad of the QFN package is soldered to a sufficiently large copper pour for thermal dissipation, because all QFN ground and thermal connections route through it. Verify CAN bus termination (120 ohm) at both ends of the bus and use a CAN transceiver such as MCP2551 or TJA1050 between the ECAN pins and the physical bus. The 'E' suffix indicates the extended industrial temperature grade (-40C to +125C). This page synthesizes distributor pricing, drop-in alternatives drawn from the same PIC18F2x80 family and competitor QFN-28 microcontrollers, and practical design notes that go beyond the manufacturer datasheet to help hardware engineers shorten integration time.

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