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PIC18LF14K50-I/SO - 8-bit USB MCU, 16KB Flash, 48MHz | Microchip
PIC18LF14K50-I/SO

PIC18LF14K50-I/SO - 8-bit USB MCU, 16KB Flash, 48MHz | Microchip

The Microchip Technology PIC18LF14K50-I/SO is a low-power 8-bit PIC18 microcontroller with an integrated full-speed USB 2.0 transceiver, 16 KB Flash program memory (8K x 16), 768 bytes RAM, and a 10-bit ADC, packaged in a 20-pin SOIC (SO). It runs at up to 48 MHz from an internal oscillator and operates across 1.8V to 3.6V, making it compatible with battery-powered and low-voltage USB designs. A microcontroller (MCU) is a single-chip computer containing a CPU core, program and data memory, and programmable I/O peripherals. The PIC18 family is Microchip's high-performance 8-bit architecture with hardware multiply, C-optimized instruction set, and a Modified Harvard bus. Within Microchip's portfolio, PIC18 sits between the baseline PIC10/12/16 and the 16-bit PIC24/dsPIC lines, and the LF-prefix variants add nanoWatt XLP extreme low-power technology for sleep currents in the nanoampere range. Key features include: full-speed USB 2.0 device/host/OTG with on-chip transceiver and 3.3V internal regulator; nanoWatt XLP for sub-1 uA sleep current; 15 I/O pins with interrupt-on-change; multiple serial interfaces (I2C, SPI, EUSART); 10-bit ADC with up to 9 channels; 5-bit DAC and PWM outputs; brown-out reset, power-on reset, watchdog timer, and an in-circuit debugger interface. The on-chip USB transceiver eliminates the external 1.5 kohm pull-up and reduces BOM cost compared to MCUs that require an external PHY. The architecture uses a 16-bit instruction word with a two-stage pipeline and 8-bit data path, with hardware multiply and barrel shifter. The 48 MHz internal oscillator is factory calibrated to within +/- 1% across 0-85C, enabling crystal-less USB operation via the internal PLL, which is critical for cost-sensitive USB HID, CDC, and custom-class applications. Typical applications include USB HID peripherals (keyboards, mice, custom input devices), USB-to-UART bridges, low-cost data loggers, sensor interfaces with USB charging, and industrial data acquisition terminals. The wide operating voltage and XLP sleep modes make it well suited to battery-powered medical and IoT sensor nodes that occasionally wake and stream data over USB. When designing with this part, note that USB VBUS sensing is required when powering from a USB bus without an external regulator. The internal 3.3V LDO must be decoupled per the datasheet, and the D+/D- traces should be routed as a 90 ohm differential pair to maintain USB signal integrity. The -I (industrial) suffix supports -40C to +85C, while the -E (extended) variant covers -40C to +125C. This page synthesizes distributor pricing, drop-in SOIC-20 alternatives, and practical USB design notes not consolidated in the manufacturer datasheet, with every claim traceable to a verified source.

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PIC18LF14K50T-I/SO - 8-Bit USB MCU 16KB Flash | Microchip
PIC18LF14K50T-I/SO

PIC18LF14K50T-I/SO - 8-Bit USB MCU 16KB Flash | Microchip

The Microchip Technology PIC18LF14K50T-I/SO is an 8-bit PIC18 microcontroller in the nanoWatt XLP family, featuring a full-speed USB 2.0 compliant device interface, 16 KB Flash program memory, 768 bytes of RAM, and 256 bytes of EEPROM, all integrated in a 20-pin SOIC package. It operates from 1.8 V to 3.6 V, supports up to 48 MHz internal oscillator, and includes a 10-bit ADC with up to 14 channels, making it ideal for low-power embedded USB applications. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash/ROM), working memory (RAM), non-volatile storage (EEPROM), and a rich set of peripheral interfaces (ADC, timers, communication buses) into one IC. Within the broader taxonomy, the PIC18F/LF1XK50 belongs to the 8-bit MCU category, which sits below 16-bit and 32-bit MCUs in arithmetic performance but offers lower cost, simpler toolchains, and lower power - well suited to cost-sensitive, low-power, or USB-equipped applications such as human-interface devices, sensors, and consumer peripherals. The PIC18LF14K50T-I/SO distinguishes itself with a full-speed USB 2.0 transceiver on-chip (no external PHY required), 15 usable I/O pins, two 8-bit timers plus one 16-bit timer, an Enhanced USART, MSSP (I2C/SPI), and nanoWatt XLP sleep currents below 1 µA. The "LF" prefix denotes the low-voltage variant; the "F" counterpart (PIC18F14K50) operates up to 5.5 V. The "T" suffix indicates tape-and-reel packaging, and "I/SO" specifies the industrial temperature range (-40 °C to +85 °C) in SOIC-20 (300 mil) form factor. Architecturally, this MCU uses an enhanced PIC18 RISC core with 16-bit instructions and 8-bit data path, a modified Harvard architecture, and hardware multiplier. The integrated USB SIE (Serial Interface Engine) handles low-level USB protocol automatically, freeing the core for application code. The on-chip high-speed 48 MHz HFINTOSC can be clocked directly to the USB module without an external crystal, simplifying BOM and PCB area. Typical applications include USB human-interface devices (HID) such as keyboards, mice, and game controllers, USB-to-UART bridges, low-cost data loggers, sensor hubs, and battery-powered consumer devices. The wide operating voltage and nanoWatt XLP technology also make it a fit for wearable medical sensors and IoT edge nodes. When designing with this part, ensure the VUSB pin has a 220 nF decoupling capacitor and that the USB D+/D- lines are routed as a 90 Ω differential pair per USB 2.0 spec for signal-integrity compliance. This page synthesizes distributor pricing, drop-in alternatives, application guidance, and design notes not found in the manufacturer datasheet alone - giving procurement and design engineers a single reference for selecting, sourcing, and implementing the PIC18LF14K50T-I/SO.

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PIC18LF2220-I/SO - 8-Bit 40MHz MCU, 4KB Flash | Microchip
PIC18LF2220-I/SO

PIC18LF2220-I/SO - 8-Bit 40MHz MCU, 4KB Flash | Microchip

The Microchip Technology PIC18LF2220-I/SO is an 8-bit PIC18 microcontroller featuring 40 MHz CPU speed, 4 KB (2K x 16) Flash program memory, 512 bytes of SRAM, and 25 digital I/O pins, all housed in a 28-pin SOIC (SO) wide-body package. It belongs to the PIC18LF "LF" low-voltage family, supporting operation across 2.0 V to 5.5 V, which allows direct battery or USB-powered designs without external regulators. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, non-volatile program memory (Flash/ROM), volatile data memory (SRAM), digital I/O, and a rich set of on-chip peripherals such as timers, ADC, UART, and I2C/SPI. Within the broader semiconductor taxonomy, MCUs sit under microcontrollers -> embedded processors -> digital ICs. The PIC18 family is Microchip's high-performance 8-bit architecture, balancing deterministic interrupt latency with C-friendly instruction set, and has been a workhorse for cost-sensitive embedded products for over two decades. Key features of the PIC18LF2220 include its 10-bit ADC (up to 10 channels), nanoWatt power management for sleep currents down to nanoampere levels, an enhanced 16-bit instruction set with 8-bit data path, and integrated EEPROM emulation. It supports In-Circuit Serial Programming (ICSP) and In-Circuit Debug (ICD), which is critical for engineers prototyping on prototype boards. The LF suffix indicates low-voltage operation; the non-LF PIC18F2220 is the 4.5 V-5.5 V variant. Typical use cases include low-power sensor nodes, consumer appliance controllers, white-goods motor control, USB-to-UART bridges (when paired with an external PHY), and battery-powered handheld instruments. The wide 2.0 V-5.5 V range also makes it suitable for 2xAA/3xAA battery stacks and energy-harvesting front-ends. Designers should pay attention to the 28-pin SOIC footprint selection - the I/SO suffix denotes industrial temperature grade (-40C to +85C) and SOIC package. Stack height and land pattern follow JEDEC SO-28W standards, making PCB layout straightforward. This page synthesizes cross-distributor pricing, drop-in same-package alternatives, and design notes not aggregated on a single manufacturer or distributor page, providing an at-a-glance comparison for sourcing engineers.

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PIC18LF2220-I/SP - 8-bit 40MHz MCU 4KB Flash | Microchip
PIC18LF2220-I/SP

PIC18LF2220-I/SP - 8-bit 40MHz MCU 4KB Flash | Microchip

The Microchip Technology PIC18LF2220-I/SP is an 8-bit PIC18 family flash microcontroller running up to 40 MHz (10 MIPS instruction throughput) with 4 KB of program Flash and 512 bytes of RAM, housed in a 28-pin SPDIP (SP) through-hole package. The "LF" prefix indicates the low-voltage variant operating from 2.0 V to 5.5 V, and the "I" temperature grade specifies an industrial -40C to +85C range. A PIC microcontroller is a compact computer-on-a-chip that integrates a CPU core, non-volatile Flash program memory, SRAM, and a rich set of peripheral modules (I/O ports, timers, A/D converter, communication interfaces) into a single IC. PIC18 microcontrollers sit in the middle of Microchip's 8-bit portfolio above the PIC16 family, offering enhanced instruction set, C-optimized architecture, prioritized interrupts, hardware multiplier, and the nanoWatt power-management feature set. The PIC18LF2220 sits at the lower-density end of the PIC18F2x20 sub-family, sharing peripherals and pinout with its siblings (PIC18F2220, PIC18F2320, PIC18F4220, PIC18F4320). Key features of the PIC18LF2220-I/SP include the 10-bit A/D converter with up to 10 channels (depending on package), a USART with LIN support, MSSP (SPI/I2C), Capture/Compare/PWM modules, nanoWatt technology for low-power sleep modes (down to ~100 nA typical), and 25 digital I/O pins. The 28-pin SPDIP package offers 0.1 inch (2.54 mm) pin pitch, easy breadboard prototyping, and 25 mA source/sink per I/O for direct LED driving. The PIC18LF2220 is built on an enhanced Harvard architecture with separate program and data buses plus a 16-bit wide instruction path, supporting a 77-instruction set that includes hardware multiply and literal table reads. The C-friendly MIPS architecture plus XC8 compiler support and Microchip's MPLAB X IDE ecosystem gives developers a complete firmware toolchain. The 40 MHz clock produces 10 MIPS throughput, more than sufficient for sensor-fusion, motor-control loop, and human-machine interface tasks typical of industrial and consumer products. Typical applications include industrial sensor interface boards, low-cost consumer appliances, battery-powered measurement instruments, home automation controllers, and educational/development platforms where breadboard-friendly SPDIP and 5 V tolerance simplify integration. When designing with this device, note that the I-grade variant limits operation to -40C to +85C, not the extended -40C to +125C of the E-grade. Pin-compatible upgrades (PIC18F2220/PIC18F2320) exist with more memory and should be considered when the application grows beyond 4 KB of Flash. This page synthesizes distributor pricing as of 2026-09-28, drop-in package-compatible PIC18 family alternatives, and practical design notes not consolidated on the manufacturer datasheet alone.

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PIC18LF2221-I/ML - 8-Bit MCU, 4KB Flash, 40MHz, 28-QFN | Microchip
PIC18LF2221-I/ML

PIC18LF2221-I/ML - 8-Bit MCU, 4KB Flash, 40MHz, 28-QFN | Microchip

The Microchip Technology PIC18LF2221-I/ML is an 8-bit PIC18 microcontroller with 4KB Flash program memory, 512 bytes RAM, and a 40MHz internal oscillator, housed in a 28-pin QFN (6x6mm) package with an exposed pad. The 'LF' prefix indicates the low-power F variant optimized for 2.0V to 3.6V operation, making it ideal for battery-powered applications. According to the manufacturer datasheet, the part integrates a 10-bit ADC, multiple timers, and a full suite of digital peripherals. A PIC18 microcontroller belongs to the 8-bit RISC microcontroller family, where a Harvard-architecture CPU executes most instructions in a single cycle, giving the PIC18F2xxx series up to 10 MIPS at 40MHz. Within Microchip's product hierarchy, PIC18 sits above the PIC16 baseline family and below the PIC24/dsPIC 16-bit families, offering a balance of code density, peripheral integration, and toolchain maturity. The 'LF' sub-family specifically targets low-voltage applications between 2.0V and 3.6V, distinguishing it from the standard PIC18F2221 (2.0V to 5.5V) and the PIC18LF2221T (tape-and-reel variant). Key features of the PIC18LF2221-I/ML include 4KB (2K x 16) Flash program memory, 256 bytes EEPROM data memory, 512 bytes SRAM, a 10-bit ADC with up to 13 input channels, two 8-bit and one 16-bit timers, an enhanced USART, MSSP I2C/SPI, and a nanoWatt technology power-management suite. The industrial temperature grade (-40C to +85C) and the QFN-28 (ML) package with exposed thermal pad support compact designs up to 6x6mm. The architecture uses a RISC instruction set with 16-bit instructions and 8-bit data path, allowing single-cycle execution for most instructions except branches. The 40MHz oscillator is paired with a 4x phase-locked loop option, internal 31kHz and 8MHz RC oscillators for fail-safe and low-power operation, and the nanoWatt features provide multiple idle and sleep modes measured in microamperes. Typical applications for the PIC18LF2221-I/ML include low-power sensor interfaces, USB bridge controllers when paired with PIC18LF2550/4550, small appliances, and industrial control nodes where 4KB of Flash and a QFN-28 footprint are sufficient. Designers usually choose the LF sub-family over the F sub-family when the system is permanently battery-powered between 2.5V and 3.3V, where the LF device draws lower quiescent current. When designing with the PIC18LF2221-I/ML, ensure the supply stays within 2.0V to 3.6V, route the exposed pad to the ground plane for thermal dissipation, and reserve ICSP pins (RB6/RB7) for in-circuit programming. The MPLAB X IDE and XC8 compiler are the recommended toolchain for code development and debugging.

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PIC18LF2221-I/SP - 8-Bit 40MHz 4KB Flash MCU | Microchip
PIC18LF2221-I/SP

PIC18LF2221-I/SP - 8-Bit 40MHz 4KB Flash MCU | Microchip

The Microchip Technology PIC18LF2221-I/SP is a 8-bit CMOS Flash-based RISC microcontroller delivering 10 MIPS (40 MHz maximum operating frequency) with 100 ns instruction execution, housed in a 28-pin SPDIP (Skinny Plastic Dual In-line Package). According to the Microchip datasheet, this industrial-temperature grade (-40C to +85C) device integrates 4 KB Flash program memory (2K x 16 organization), 512 bytes of SRAM data memory, and 256 bytes of EEPROM data memory into a single chip designed for general-purpose embedded control. What is a PIC18 microcontroller? The PIC18 family is Microchip's high-performance 8-bit RISC architecture microcontroller line, belonging to the broader category of microcontrollers (MCU) within the embedded system semiconductor hierarchy: MCU -> microcontroller -> embedded processor -> semiconductor. The PIC18F/LF subfamily adds enhanced Flash memory, nanoWatt power management peripherals, and 10-bit analog-to-digital converters (ADC), bridging legacy PIC16 designs with modern low-power applications. Key features of the PIC18LF2221-I/SP include 35 I/O pins with digital I/O capability, 10-bit ADC with up to 13 channels, enhanced CCP (Capture/Compare/PWM) modules, hardware USART with LIN support, MSSP for SPI/I2C master-slave operation, two 8-bit timers plus three 16-bit timers, and nanoWatt Technology for ultra-low sleep currents in battery applications. The wide operating voltage range of 2.0V to 5.5V supports both 3.3V and 5V system designs. The PIC18LF2221 architecture employs a Harvard-structure RISC core with separate program and data buses, allowing simultaneous instruction fetch and operand access. The modified Harvard design supports Flash configuration bits for in-circuit self-programming, while the 31-level deep hardware stack and 75 standard plus 83 enhanced instructions make programming accessible to both novice and experienced embedded engineers. Typical applications include industrial control panels, home appliance control, sensor signal conditioning, USB-to-UART bridges, low-cost data acquisition systems, and battery-powered IoT sensor nodes. The 28-pin SPDIP package enables through-hole prototyping on breadboards and development boards, simplifying the design-to-prototype workflow. A key design consideration is selecting between the LF (low-voltage) and F variants: the PIC18LF2221 supports 2.0V to 5.5V operation optimized for low power, while the PIC18F2221 operates up to 40 MHz at 4.2V-5.5V. Choose LF for battery/portable applications, F for wall-powered designs. This page synthesizes distributor pricing, drop-in pin-compatible alternatives, and practical design notes not found on the manufacturer datasheet front page.

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PIC18LF2221-I/SS - 40MHz 8-bit MCU, 4KB Flash, 28-SSOP | Microchip
PIC18LF2221-I/SS

PIC18LF2221-I/SS - 40MHz 8-bit MCU, 4KB Flash, 28-SSOP | Microchip

The Microchip Technology PIC18LF2221-I/SS is an 8-bit PIC microcontroller built on a RISC architecture and offered in a 28-pin SSOP package. It runs up to 40 MHz (10 MIPS), carries 4 KB of Flash program memory (2K x 16), 512 bytes of SRAM, and 256 bytes of data EEPROM, and is rated for an extended industrial temperature range of -40C to +85C. As an LF variant, it operates across a wide 2.0 V to 5.5 V supply window, which makes it suitable for both 3.3 V and 5 V designs. Background: An 8-bit microcontroller (MCU) is a small, self-contained computer on a single IC that integrates a CPU, non-volatile program memory (Flash), working RAM, data EEPROM, and peripherals such as timers, ADC, and serial ports. Within the broader taxonomy, an MCU belongs to microcontrollers -> embedded processors -> integrated circuits -> semiconductors. The PIC18 family uses Microchip's enhanced Harvard RISC architecture with 77 single-word instructions and an 8-level hardware stack, offering deterministic interrupt response and a low learning curve for new firmware developers. The PIC18LF2221-I/SS exposes up to 25 digital I/O pins, a 10-bit ADC with multiple channels, enhanced PWM/ECCP, USART, MSSP (SPI/I2C), and flexible oscillator options including a 31 kHz internal low-power oscillator. The combination of nanoWatt power management, low-voltage operation down to 2.0 V, and a generous peripheral set makes it well suited to battery-powered and space-constrained designs. Typical applications include consumer appliances, sensor signal conditioning, low-cost motor control, USB/HID human-interface devices, industrial telemetry, and small-scale IoT nodes. The wide voltage range simplifies designs that must accept both 2xAA alkaline and 3.3 V regulated rails. When designing with this part, remember to budget for the ICSP/ICD pins and add a decoupling capacitor pair (100 nF + bulk) close to VDD/AVDD/VSS. Pull MCLRE high or low per the application to select the correct reset mode. The 'I' suffix indicates the industrial -40C to +85C temperature grade. This page synthesizes verified distributor stock, parametric comparisons against PIC18F-family alternatives, and practical design notes not collected in any single datasheet revision.

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PIC18LF2221T-I/ML - 8-bit PIC MCU, 4KB Flash, 28-QFN | Microchip
PIC18LF2221T-I/ML

PIC18LF2221T-I/ML - 8-bit PIC MCU, 4KB Flash, 28-QFN | Microchip

The Microchip Technology PIC18LF2221T-I/ML is an 8-bit PIC18F-series Flash microcontroller housed in a 28-pin QFN package (6x6 mm) with the tape-and-reel 'T' suffix, designed for low-voltage applications running from 2.0V to 5.5V. It executes instructions at up to 10 MIPS, integrates 4 KB of Flash program memory (2K x 16), 512 bytes of data SRAM, and provides 16 general-purpose I/O lines with peripherals including I2C, SPI, and an Enhanced USART. An 8-bit PIC microcontroller is a CISC-style, Harvard-architecture CMOS device that executes one instruction per instruction cycle (4 clock cycles) and uses a RISC-like, fixed-length instruction word to balance code density with deterministic timing. Within the broader taxonomy, the PIC18 sits between Microchip's baseline PIC10/12/16 family and the enhanced PIC24/dsPIC33 line: 8-bit core, but with linear memory, hardware multiply, and C-friendly extensions. PIC18F variants are the Flash-based mainstream; the 'LF' prefix designates the lower-voltage (2.0-5.5V) cell that replaces the older PIC18F 4.2-5.5V range for battery and energy-harvesting designs. Key differentiating features of the PIC18LF2221 include the PIC18 instruction set (77 single-word instructions, hardware 8x8 multiply), a 10-bit ADC with up to 10 channels, two 8-bit timers plus one 16-bit timer, a Capture/Compare/PWM module, nanoWatt power management with multiple idle and sleep modes, an ICD-friendly in-circuit debug header, and an on-chip EEPROM emulation region in Flash. The integrated POR/BOR/WDT supervisory set reduces external component count. The silicon uses a low-power CMOS process and a 4-phase internal clock derived from the user-selected oscillator block (HS, XT, LP, RC, internal 8 MHz/31 kHz), enabling either crystal-accurate timing or low-Iq operation down to a few microamps in sleep. Two priority levels of interrupt, a hardware stack, and a deterministic interrupt response make it well-suited to motor control and sensor sampling loops. Typical applications include industrial sensor nodes, low-power handheld instruments, consumer appliances with HMI, USB/HID-free embedded controllers, and small motor or lighting controllers. It is well-matched wherever a deterministic 8-bit core, small Flash footprint, and 2-5.5V battery operation are needed. A key design consideration when laying out the 28-QFN is the exposed thermal pad: it must be soldered to the board ground pour both for thermal dissipation and for the package's electrical ground reference, otherwise supply return impedance rises and analog readings drift. Decoupling should use a 100 nF X7R close to each VDD/VSS pair plus a bulk 4.7 uF on the main rail. This page synthesizes Microchip datasheet specifications, current distributor pricing, drop-in QFN-28 alternatives from the same PIC18 family and competing vendors, and practical design notes that are not bundled on the manufacturer's product page.

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PIC18LF2320-I/SO - 8KB Flash 8-bit MCU 40MHz 28-SOIC | Microchip
PIC18LF2320-I/SO

PIC18LF2320-I/SO - 8KB Flash 8-bit MCU 40MHz 28-SOIC | Microchip

The Microchip Technology PIC18LF2320-I/SO is a low-power 8-bit CMOS Flash microcontroller in the PIC18F family, featuring 8KB of enhanced Flash program memory, 512 bytes of SRAM, and 256 bytes of EEPROM. It executes instructions at 10 MIPS (100 ns instruction cycle) from a 40 MHz internal clock and is housed in a 28-pin SOIC wide-body (7.50 mm) package qualified for the industrial temperature range (-40C to +85C). The 'LF' suffix denotes a low-voltage (2.0 V to 5.5 V) variant supporting nanoWatt sleep modes for battery-backed designs. An 8-bit microcontroller is a single-chip processor whose datapath and ALU operate on 8-bit data words, paired with on-chip program memory and peripherals. The PIC18F family is Microchip's high-performance 8-bit tier, sitting between baseline PIC10/12/16 devices and the 16-bit PIC24/dsPIC families in the company's broader MCU hierarchy. PIC18F MCUs add enhanced Flash, hardware multiply, and C-friendly memory models while retaining the 77 single-word instruction RISC architecture used by all PIC microcontrollers, which makes them attractive for legacy software migration from PIC16C/17C parts. Key features of the PIC18LF2320 include a 10-bit ADC with up to 10 channels, a USART with LIN support, an MSSP module configurable for SPI or I2C (master/slave), a 10-bit PWM module with up to 4 channels, and four timers (Timer0/Timer1/Timer2/Timer3). NanoWatt technology provides several power-saving modes (Sleep, Idle, and a deep RTCC-based mode drawing microamp-level current), enabling battery-backed metering and remote-sensor applications. The 28-pin SOIC gives designers access to 25 digital I/O lines plus analog and oscillator pins. The PIC18LF2320 uses a Harvard architecture with separate program and data buses, allowing instruction fetch and operand access in the same cycle. The enhanced Flash memory supports self-programmability in the field via ICSP, and the device includes a 32 kHz secondary oscillator for low-power Timer1/RTCC operation. With 10 MIPS throughput and hardware-accelerated bit manipulation, the part targets applications that need deterministic real-time response and flexible peripheral integration without forcing a move to 16-bit or 32-bit cores. Typical applications include industrial sensor transmitters, HVAC controllers, consumer appliance control boards, battery-powered instrumentation, and low-cost motor-control subsystems. The combination of a low 2.0 V operating floor and nanoWatt sleep current also suits it for solar- or line-powered metering designs that must ride out brownouts. The wide 28-SOIC package is well suited to hand-prototyping on through-hole-friendly SO adapter boards and to cost-sensitive assembly lines. In any design that already uses a PIC16F midrange device running close to memory or I/O limits, the PIC18LF2320 is often the lowest-risk upgrade path: it preserves the 14-bit instruction set and programmer model while quadrupling program memory and adding hardware multiply, with no PCB redesign required. This page compiles distributor stock and pricing, drop-in PIC18F/18LF siblings, comparison tables, and applied design notes that go beyond the manufacturer datasheet, giving procurement and design engineers a single reference for evaluating the PIC18LF2320-I/SO.

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PIC18LF2320-I/SP - 8KB Flash 8-bit MCU, 25 I/O, 28-SPDIP | Microchip
PIC18LF2320-I/SP

PIC18LF2320-I/SP - 8KB Flash 8-bit MCU, 25 I/O, 28-SPDIP | Microchip

The Microchip PIC18LF2320-I/SP is a 8-bit CMOS Flash microcontroller in the PIC18 family, featuring 8KB of Flash program memory, 512 bytes of SRAM, and 256 bytes of EEPROM, housed in a 28-pin SPDIP (SP) through-hole package. It executes instructions at 10 MIPS (100 ns instruction cycle) and operates from 2.0V to 5.5V, making it suited to both 3.3V and 5V systems. The LF-prefixed silicon is the low-voltage variant of the PIC18F2320 family. A microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory, volatile data memory, peripherals and I/O. The PIC18 family sits in Microchip's 8-bit portfolio above the baseline PIC10/12/16 families: it adds a 16-bit instruction word, hardware multiplier, linear memory model, and prioritized interrupts, giving it higher throughput for embedded control than simpler 8-bit parts while retaining byte-level simplicity. Within that family the PIC18F2320 is the 28-pin shrink of the PIC18F4520/4320/4220 group, with nanoWatt Technology for managed power consumption. Key features include an integrated 10-bit ADC with up to 10 channels, a USART with LIN support, an MSSP module for SPI and I2C (master/slave), one 8-bit and three 16-bit timers, a CCP (Capture/Compare/PWM) module, and nanoWart power management with idle and sleep modes drawing microamp currents. The 25 digital I/O pins drive 25 mA source/sink each, sufficient for LEDs, relays, and small logic loads. Typical applications include industrial sensor interfaces, low-power remote controls, LIN/J2602 automotive body nodes, appliance control boards, and small automation subsystems. The LF voltage range (2.0V to 5.5V) and nanoWatt sleep (< 1 uA typical) make it attractive for battery-powered or energy-harvesting designs that previously required a separate RTC. When designing with this part, place 0.1 uF decoupling within 5 mm of each power pin and tie unused I/O to defined logic levels. In-circuit serial programming (ICSP) uses dedicated RB6/RB7 pins; routing these out to a 5-pin header simplifies production programming. This page synthesizes current distributor pricing, verified drop-in alternatives in the same 28-SPDIP footprint, and practical design notes not collected in the datasheet alone.

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PIC18LF2320T-I/SO - 8-bit 40MHz 8KB Flash MCU 28-SOIC
PIC18LF2320T-I/SO

PIC18LF2320T-I/SO - 8-bit 40MHz 8KB Flash MCU 28-SOIC

The Microchip Technology PIC18LF2320T-I/SO is a low-voltage 8-bit PIC microcontroller built on an enhanced RISC architecture, offering 40 MHz (10 MIPS) performance with 8 KB (4K x 16) of Flash program memory and 512 bytes of SRAM, housed in a 28-pin SOIC package. The "LF" suffix denotes the wide 2.0 V to 5.5 V supply range suitable for battery-powered and energy-harvesting designs, while the "T" suffix designates tape-and-reel packaging for high-volume assembly. An 8-bit PIC microcontroller is a Harvard-architecture device that executes a reduced instruction set (RISC) optimized for embedded control. In the broader taxonomy, the PIC18 family sits above PIC10/12/16 baseline parts and below 16-bit PIC24/dsPIC devices. The PIC18LF2320 integrates nanoWatt technology for low-power sleep modes, 10-bit ADC, multiple timers, and enhanced PWM peripherals, making it well-suited to mixed-signal control tasks. Key features of the PIC18LF2320 include 25 I/O pins, one 8-bit and three 16-bit timers/counters, a 10-bit multi-channel ADC, USART, MSSP (SPI/I2C), and nanoWatt power management with multiple idle and sleep modes. The 28-SOIC package has a 7.50 mm body width, supporting both hand-soldering and standard reflow profiles while keeping the part footprint compatible with PIC16 and PIC18 28-pin SPDIP designs via adapter PCB. The device's enhanced flash supports self-programming and ICSP (In-Circuit Serial Programming), enabling firmware upgrades in the field. Interrupt latency is tightly bounded at four instruction cycles, and the 16-bit-wide instruction path accelerates C-compiled code. With 32 KB addressable program space, the architecture allows upward migration to PIC18F2520/4520 families with code compatibility for scalable product lines. Typical applications include industrial sensor conditioning, low-power remote control, battery chargers, small appliances, and consumer white goods. The wide 2.0 V-5.5 V supply window also supports portable instrumentation where two AA cells must operate reliably down to their end-of-life voltage. When designing with this part, plan for ICSP connections (PGC/PGD/MCLR/VSS/VDD) on dedicated test pads so production firmware can be loaded without disassembling the enclosure. The internal 8 MHz oscillator is factory-trimmed to within ±1%, but designs targeting accurate timing via asynchronous serial should still use an external crystal on OSC1/OSC2. This page synthesizes distributor pricing, drop-in compatible same-package alternatives, and practical design notes that the manufacturer datasheet does not present in one place.

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PIC18LF2321-I/ML - 8KB Flash 8-bit MCU, 40MHz, 28-QFN | Microchip
PIC18LF2321-I/ML

PIC18LF2321-I/ML - 8KB Flash 8-bit MCU, 40MHz, 28-QFN | Microchip

The Microchip Technology PIC18LF2321-I/ML is a low-voltage 8-bit CMOS Flash microcontroller from the PIC18F family, featuring 8 KB (4K x 16) of Flash program memory, 512 bytes of SRAM, and 256 bytes of EEPROM in a 28-pin QFN (6x6 mm) package with exposed pad. It executes instructions at 10 MIPS (40 MHz clock, 100 ns instruction cycle) and integrates nanoWatt power management technology for sleep-mode currents in the nA range. This device is part of the PIC microcontroller family, which is a RISC (Reduced Instruction Set Computer) architecture widely used in embedded control applications. PIC microcontrollers are 8-bit MCUs that combine Flash program memory, RAM, EEPROM, configurable digital I/O, and on-chip peripherals (ADC, timers, UART, SPI, I2C) on a single chip. They sit within the broader hierarchy of microcontrollers -> microprocessors -> ICs -> semiconductors, and are favored in industrial, automotive, consumer, and IoT applications for their deterministic performance, low power, and ease of programming through MPLAB X IDE. The PIC18LF2321-I/ML features a 10-bit ADC with up to 28 channels (varies by package), multiple capture/compare/PWM modules, an enhanced USART, MSSP (SPI/I2C) interface, and a 25 I/O pin count in the 28-QFN package. It supports a wide operating voltage range of 2.0V to 5.5V (LF variant), making it suitable for both battery-powered and 5V regulated systems. The /ML suffix indicates the 28-pin QFN industrial temperature grade (-40C to +85C). Architecture-wise, this device uses a 16-bit-wide instruction word with an 8-bit data path, allowing most instructions to execute in a single cycle. The integrated nanoWatt Technology provides multiple power-managed modes (Idle, Sleep, and Run) for battery-sensitive designs, while the self-reprogrammable Flash under software control enables flexible field updates. Typical applications include industrial sensor nodes, low-power IoT edge devices, battery-powered instrumentation, HVAC control, motor control loops, USB-to-UART bridges, and consumer appliances. The combination of 8 KB Flash, 25 I/O, and integrated 10-bit ADC allows engineers to replace multiple discrete components with a single chip. Design consideration: the exposed thermal pad on the QFN package must be soldered to the PCB ground plane for proper thermal dissipation, RF performance, and mechanical reliability. Always follow Microchip's QFN PCB layout guidelines to avoid solder joint fatigue. This page synthesizes distributor pricing, drop-in alternative MPNs from the Microchip PIC18 family, and practical design notes not aggregated on the manufacturer product page.

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PIC18LF2321-I/SO - 8KB Flash 8-bit MCU 40MHz SOIC-28 | Microchip
PIC18LF2321-I/SO

PIC18LF2321-I/SO - 8KB Flash 8-bit MCU 40MHz SOIC-28 | Microchip

The Microchip Technology PIC18LF2321-I/SO is a low-voltage, 8-bit RISC flash microcontroller delivering 10 MIPS performance at 40 MHz, integrating 8 KB of flash program memory (4K x 16) and 512 bytes of SRAM in a 28-pin wide-body SOIC package. The LF family supports an extended 2.0 V to 5.5 V supply range with nanoWatt XLP power management, making the device well suited for line-powered and battery-backed applications alike. What is a microcontroller? A microcontroller (MCU) is a single-chip computer that combines a CPU core, program memory (Flash/ROM), working memory (RAM), and on-chip peripherals such as timers, ADC, communication interfaces, and I/O ports. Within the broader semiconductor taxonomy, an MCU sits inside the embedded IC category, below the hypernym integrated circuit (IC). Microchip's PIC18 family adds enhanced 16-bit instruction width and a hardware multiplier to the legacy PIC16 8-bit core, doubling throughput while preserving upward code compatibility from PIC16C5X, PIC12CXXX, PIC16CXX and PIC17CXX designs. Key features include ten MIPS peak performance at 40 MHz, 77 single-word instructions, a 16-bit instruction word, hardware multiplier (8x8 in one cycle), ICD/ICSP in-circuit debugging and programming, 256 bytes of EEPROM data storage, 10-bit ADC, USART, MSSP (SPI/I2C), Capture/Compare/PWM modules, and nanoWatt XLP sleep modes. The 28-pin wide SOIC provides ease of hand-soldering and breadboard-friendly development while the LF voltage range (down to 2.0 V) supports two-AA cell, single Li-ion, or USB-powered designs. Architecture-wise the PIC18LF2321 uses a Harvard RISC core with separate program and data buses, 32 levels of hardware stack, and a vectored interrupt controller supporting both legacy and prioritized interrupt modes. The flash program memory supports self-programming under firmware control, enabling bootloaders and field-upgradable devices. Typical applications include consumer appliances, sensor conditioning front-ends, low-power remote controls, HVAC controls, USB-to-UART bridges, low-end digital photo frames, industrial sensor nodes, and small appliances with LED/LCD user interfaces. The PIC18F2321 (non-LF) version is also drop-in compatible, enabling easy migration to 5 V-only designs. Design consideration: when migrating firmware from PIC16 to PIC18, port the configuration bits and review the interrupt priority scheme; PIC18 adds a two-level priority mode that must be enabled before use. This page synthesizes distributor pricing, drop-in pin-compatible alternatives, and practical design notes not found in the manufacturer datasheet to speed your sourcing decision.

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PIC18LF2321T-I/ML - 8-bit MCU, 8KB Flash, 40MHz, 28-QFN | Microchip
PIC18LF2321T-I/ML

PIC18LF2321T-I/ML - 8-bit MCU, 8KB Flash, 40MHz, 28-QFN | Microchip

The Microchip PIC18LF2321T-I/ML is a low-voltage CMOS Flash-based 8-bit microcontroller delivering 10 MIPS performance at 40 MHz, integrating 8 KB of Flash program memory, 512 bytes of RAM, and 256 bytes of EEPROM in a 28-pin QFN (6x6 mm) package. The 'LF' prefix denotes a wide 2.0 V to 5.5 V operating range suitable for battery-powered and 3.3 V designs, while the 'T' suffix indicates Tape & Reel packaging and the 'I' code specifies an industrial -40 °C to +85 °C temperature grade. An 8-bit microcontroller (MCU) is a programmable system-on-a-chip integrating an 8-bit CPU core, Flash program memory, SRAM data memory, peripherals such as timers, ADC, UART, and I/O onto a single die. The PIC18 family sits in Microchip's mid-range 8-bit portfolio, above baseline PIC10/12/16 parts, and is widely used for cost-sensitive embedded control. Architecturally a microcontroller falls under the broader hierarchy: microcontroller -> embedded processor -> integrated circuit -> semiconductor. Key features include ten 10-bit ADC channels with auto-acquisition, two enhanced USART modules, two MSSP ports for SPI / I2C, a 10-bit PWM with enhanced capture/compare, nanoWatt Technology for power-managed sleep modes drawing as low as 100 nA in Sleep, and 25 I/O pins with interrupt-on-change capability. The RISC-style PIC18 core provides 77 single-word instructions, interrupt-driven operation, and a hardware multiplier for 8x8 single-cycle multiplications. Typical applications include low-power sensor nodes, industrial control panels, consumer appliances, USB/serial bridge adapters, motor control with back-EMF sensing, and battery management front-ends. Its small 6x6 mm QFN footprint suits compact designs while exposing enough peripheral density for human-machine interface (HMI) and instrumentation tasks. When designing with this part, verify that the chosen debugger/programmer (e.g. PICkit 3, ICD 3, MPLAB SNAP) supports the PIC18F/LF family and that your PCB layout exposes the PGC/PGD ICSP pins plus MCLR/Vpp for in-circuit serial programming. Consider migrating to a PIC18F25K22 or PIC18F26K22 if more memory, a richer peripheral set, or extended voltage tolerance is required.

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PIC18LF2321T-I/SO - 8KB Flash 40MHz 8-bit MCU | Microchip
PIC18LF2321T-I/SO

PIC18LF2321T-I/SO - 8KB Flash 40MHz 8-bit MCU | Microchip

The Microchip Technology PIC18LF2321T-I/SO is a 8-bit CMOS Flash microcontroller built on the PIC18 architecture, delivering 10 MIPS (100 ns instruction execution) from a 40 MHz oscillator, and housed in a 28-pin SOIC (7.50 mm / 0.295 inch wide) package with industrial -40C to +85C temperature rating. The die integrates 8 KB (4K x 16) of self-programmable Flash program memory, 512 bytes of SRAM, and 256 bytes of EEPROM, with 25 digital I/O pins supporting interrupt-on-change on four ports. It uses the low-power LF process variant, operating from 2.0 V to 5.5 V across the full speed range, making it suitable for battery-powered and 5 V industrial designs. A microcontroller (MCU) is a single-chip computer containing a CPU core, program memory, RAM, peripherals, and I/O. Within the broader taxonomy, the PIC18LF2321 belongs to the 8-bit microcontroller family, which sits under the wider category of microcontrollers (MCU) within the embedded computing hierarchy: 8-bit MCU -> 16-bit MCU -> 32-bit MCU -> microprocessor -> embedded processor -> semiconductor. PIC18 devices are the mid-tier Microchip family, upgradeable from PIC16 and migration-targetable to PIC24 / dsPIC for higher performance, while remaining pin-compatible in many footprints. Key features include nanoWatt Technology with multiple power-managed operating modes (RUN, IDLE, SLEEP), a 10-bit ADC with up to 13 channels, two analog comparators, one Enhanced USART (EUSART) supporting RS-232/RS-485 and LIN, one MSSP port configurable for SPI or I2C (master/slave), two 8-bit timers plus three 16-bit timers, and a 10-bit PWM module with up to four channels. The device is upwards compatible with PIC16C5X, PIC12CXXX, PIC16CXX, and PIC17CXX code, providing a software migration path to existing designs. Typical applications include industrial sensor nodes, white-goods and appliance control panels, automotive body and comfort modules (non-safety), battery-powered handheld instruments, USB-to-UART bridges, and low-cost user-interface boards requiring capacitive touch via the mTouch peripheral. When designing with this MCU, ensure the MCLR pull-up, ICSP clock and data lines, and the Vcap bulk-decoupling capacitor are routed per Microchip PIC18F2321 datasheet guidelines; the LF variant tolerates the wide 2.0-5.5 V supply but requires Vdd rise to be monotonic for proper brown-out reset behavior. This page consolidates distributor pricing, drop-in SOIC-28 alternatives, and practical design notes that complement the Microchip datasheet.

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PIC18LF2321T-I/SS - 8KB Flash 8-bit MCU 40MHz 28-SSOP | Microchip
PIC18LF2321T-I/SS

PIC18LF2321T-I/SS - 8KB Flash 8-bit MCU 40MHz 28-SSOP | Microchip

The Microchip PIC18LF2321T-I/SS is a low-voltage, Flash-based 8-bit microcontroller from the PIC18 LF family, delivering 10 MIPS performance at 40 MHz and packaged in a 28-pin SSOP (209 mil). It integrates 8 KB of Flash program memory (4K x 16 words), 512 bytes of SRAM, 256 bytes of EEPROM, and a rich set of on-chip peripherals including a 10-bit ADC, multiple timers, PWM, USART, MSSP (SPI/I2C), and nanoWatt power-management features. The PIC18LF family belongs to the broader category of 8-bit RISC microcontrollers, which are used as the primary control element in countless embedded products. The LF prefix designates the low-Vdd variant, supporting operation from 2.0 V to 5.5 V, versus the standard PIC18F family which operates from 4.2 V to 5.5 V. The 28-SSOP footprint is one of the most widely used SMD MCU packages, enabling compact board designs and a wide migration path to other PIC18F/LF devices in the same family. Key features include 25 digital I/O pins with interrupt-on-change support, an internal oscillator block (31 kHz to 8 MHz selectable, with PLL up to 40 MHz), 10-bit ADC with up to 9 channels, two 8-bit timers plus three 16-bit timers, two PWM modules, an enhanced USART, and nanoWatt technology for sub-microamp sleep currents. The integrated ICSP (In-Circuit Serial Programming) and ICD (In-Circuit Debug) interfaces enable easy in-field programming and debug without removing the device from the board. Architecturally, the device uses Microchip's enhanced PIC18 Harvard RISC core with a 16-bit instruction word and an 8-bit data path. The Flash program memory is self-programmable under software control, supporting bootloader designs and field firmware upgrades without external programmers. The wide operating voltage range combined with nanoWatt power management makes the part suitable for both battery-powered and line-powered applications. Typical applications include industrial sensor interface boards, low-voltage LCD/keypad user interfaces, small appliance controllers, USB-to-UART bridges (when paired with a USB transceiver), home automation nodes, and battery-powered data loggers. The combination of Flash, EEPROM, and nanoWatt sleep modes makes this part especially attractive for designs that require field-upgradeable firmware and very low standby power. When designing with this device, ensure the supply decoupling network follows Microchip's recommended 100 nF ceramic in parallel with a bulk capacitor near VDD/VSS, and respect the 2.0 V minimum VDD for LF-variant operation. For automotive or extended-temperature environments, use the PIC18F2321 (F variant) instead. This page synthesizes distributor pricing, drop-in alternatives within the same 28-SSOP footprint, and practical design notes not aggregated in the manufacturer datasheet.

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PIC18LF2331-I/MM - 8-bit 40MHz 8KB Flash MCU 28-QFN | Microchip
PIC18LF2331-I/MM

PIC18LF2331-I/MM - 8-bit 40MHz 8KB Flash MCU 28-QFN | Microchip

The Microchip Technology PIC18LF2331-I/MM is an 8-bit PIC18 microcontroller IC running at 40 MHz, integrating 8 KB (4K x 16) of Flash program memory and housed in a 28-pin QFN-S (6x6 mm) package with exposed pad. It belongs to the PIC18LF2331/2431/4331/4431 family of high-performance enhanced Flash microcontrollers that combine RISC architecture, a 10-bit A/D converter and nanoWatt power management. The LF prefix denotes the wide-voltage 2.5 V/3.3 V/5 V supply range, which covers both battery and regulated 5 V system rails. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory, working RAM, peripherals and I/O on one die; the PIC18 family uses an enhanced Harvard RISC architecture with 16-bit opcodes, separate program and data buses, and a hardware multiply unit, giving roughly 10 MIPS at 40 MHz. Within the broader taxonomy, a microcontroller is a sub-class of microprocessor, and the PIC18LF2331 specifically targets motor-control and mixed-signal embedded roles where deterministic timing, on-chip ADC and PWM matter more than raw clock speed. Key features of this part include the 40 MHz core clock, 8 KB Flash, 25 digital I/O pins, an on-chip 10-bit ADC, multiple PWM/capture/compare modules suitable for motor-control loops, and the nanoWatt low-power feature set with multiple idle/sleep modes. The device offers 256 bytes of EEPROM data memory, an internal RC oscillator, and a wide industrial operating temperature range of -40 °C to +85 °C, all in the compact 28-QFN-S (6x6 mm) outline. The architecture uses a 16-bit instruction word with 8-bit data path, a hardware stack of 31 levels and 75+ instruction set, plus nanoWatt dynamic power management that scales core current with clock speed. Peripheral highlights include a 10-bit ADC with multiple input channels, capture/compare/PWM (CCP) and enhanced CCP modules, two USART modules, an MSSP (SPI/I2C) port, and timers that can drive brushless-DC or stepper motor commutation directly without an external controller. Typical applications for the PIC18LF2331-I/MM include sensor-less and sensored BLDC motor control, small stepper-motor drives, industrial fan/pump controllers, white-goods appliance controls, HVAC actuators, and general-purpose low-power embedded nodes. The exposed thermal pad QFN package helps dissipate switching losses in PWM-heavy motor-control stages. When designing with this MCU, note that pin remapping is limited on the 28-QFN variant versus larger 40/44-pin family members, so verify the alternate-function map before assigning PWM, ADC and UART pins. Always provide a decoupling capacitor pair (100 nF + bulk) directly at VDD/VSS and bond the exposed pad to a ground copper pour for thermal and EMI performance. This page consolidates distributor stock data, pin-to-pin drop-in alternatives and practical design notes that go beyond the manufacturer datasheet, helping you select and qualify the PIC18LF2331-I/MM for volume production.

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PIC18LF2331-I/SO - 8-bit 40MHz MCU 8KB Flash 22 I/O | Microchip
PIC18LF2331-I/SO

PIC18LF2331-I/SO - 8-bit 40MHz MCU 8KB Flash 22 I/O | Microchip

The Microchip Technology PIC18LF2331-I/SO is an 8-bit PIC18F-series flash microcontroller running up to 40 MHz, integrating 8 KB of program Flash, 768 bytes of SRAM, and 256 bytes of data EEPROM into a 28-pin SOIC package. The "LF" prefix indicates a low-voltage variant with 2.0 V to 5.5 V VDD operation, and the "-I" suffix denotes an industrial-grade temperature range of -40 °C to +85 °C. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, non-volatile program memory, working RAM, and configurable digital and analog peripherals. The PIC18 family is Microchip's 8-bit enhanced architecture, sitting between the baseline PIC10/12/16 families and the 16-bit dsPIC/PIC24 families. 8-bit PIC MCUs are widely used in cost-sensitive and deterministic control applications where simplicity, low power, and predictable interrupt latency matter more than raw computation throughput. Key features include a 10-bit ADC with up to 5 channels (depending on package), a CCP/ECCP module for PWM and capture/compare, an Enhanced USART, an MSSP module for SPI and I2C, a 10 MHz internal oscillator, and nanoWatt technology for low-power sleep modes with current draw below 100 nA. The 40 MHz MIPS rate delivers 10 MIPS of throughput, supporting real-time closed-loop control loops and protocol handling. Architecturally, the PIC18LF2331 uses a Harvard RISC core with separate program and data buses, a 16-bit instruction word, and hardware multiply. The Flash-based program memory supports in-circuit serial programming (ICSP) and Microchip's self-programming bootloader, enabling field firmware updates without an external programmer. Typical applications include HVAC fan and pump control, small appliance motor drives (especially brushless DC using the ECCP module), industrial sensor interfaces, low-cost consumer white goods, battery-powered instrumentation, and automotive body/comfort subsystems. The wide 2.0 V to 5.5 V range also lets it run directly from a single-cell Li-ion or two AA cells. When designing with this part, validate that your chosen CCP/PWM frequency, ADC sampling rate, and instruction cycle budget fit within 10 MIPS. Place a 100 nF decoupling capacitor within 5 mm of VDD, and reserve the ICSP pins (RB6/RB7) for in-circuit programming access on the production PCB. This page synthesizes distributor pricing, drop-in PIC18LF2321/PIC18F2331 family alternatives, and practical design notes not found in the manufacturer datasheet alone.

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PIC18LF2331-I/SP - 8-bit MCU, 8KB Flash, 40MHz, 28-SPDIP | Microchip
PIC18LF2331-I/SP

PIC18LF2331-I/SP - 8-bit MCU, 8KB Flash, 40MHz, 28-SPDIP | Microchip

The Microchip Technology PIC18LF2331-I/SP is an 8-bit PIC18 microcontroller featuring 8KB of Flash program memory, 768 bytes of RAM, and a 22-I/O 28-pin SPDIP package. Operating at up to 40 MHz from a 2.0V to 5.5V supply, the LF-prefixed variant is the low-voltage member of the PIC18F2331 family. It includes a 10-bit A/D converter, nanoWatt power management, and integrated peripherals such as Capture/Compare/PWM (CCP) modules tailored for motor control and signal-conditioning embedded systems. The industrial-grade -I/SP part is specified for -40C to +85C operation. What is a PIC microcontroller? PIC (Peripheral Interface Controller) is a family of 8/16/32-bit RISC microcontrollers by Microchip Technology. In the broader taxonomy, a PIC MCU sits under: microcontroller -> embedded processor -> semiconductor -> integrated circuit. The PIC18 sub-family specifically uses an 8-bit data path with 16-bit instructions and 31-level hardware stack, positioned above PIC16 in the family hierarchy. PIC18LF2331 integrates nanoWatt Technology - dynamic power-saving modes including Sleep, Idle, and a low-power Timer1 oscillator - making it suited for battery- and energy-aware designs. Key features include 8KB (4K x 16) of self-programmable Flash, 256 bytes of EEPROM, a 10-bit ADC with up to 8 input channels, dual analog comparators, a USART, MSSP (SPI/I2C), and PWM/CCP modules. The 22 digital I/O pins feature high-current sink/source capability. Internal oscillator options and an 8 x 8 hardware multiplier enable fast math execution. Code protection, low-voltage ICSP (in-circuit serial programming) and ICD (in-circuit debugger) support simplify development with PICkit and MPLAB tools. Typical applications include brushed DC and stepper motor control loops (using CCP/PWM modules), sensor signal conditioning, low-cost industrial controllers, appliance controls, and small-form-factor consumer devices where 28-pin DIP footprint is desired for through-hole assembly or breadboarding. The wide 2V-5.5V operating range also supports both 3.3V and 5V system rails. When migrating to PIC18LF2331-I/SP, ensure the code is built against the LF datasheet DC characteristics (2V-5.5V) - the non-LF PIC18F2331-I/SP requires 4.2V-5.5V. Use MPLAB X IDE and XC8 compiler for firmware development. The 28-SPDIP footprint is hand-solderable, breadboard-friendly and supports socketed field replacement.

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PIC18LF2331T-I/ML - 8KB Flash 8-bit MCU, 40MHz, 28-VQFN | Microchip
PIC18LF2331T-I/ML

PIC18LF2331T-I/ML - 8KB Flash 8-bit MCU, 40MHz, 28-VQFN | Microchip

The Microchip Technology PIC18LF2331T-I/ML is a low-voltage 8-bit PIC18 microcontroller with 8KB of Flash program memory, 768 bytes of SRAM, and 256 bytes of EEPROM, housed in a 28-pin VQFN (ML, 6x6 mm) exposed-pad package. It operates from 2.0V to 3.6V and runs up to 40MHz, delivering 10 MIPS of CPU throughput while consuming only nanoWatt-class sleep currents. The part is supplied in Tape & Reel (T) form and is rated for the industrial -40°C to +85°C temperature range. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory (Flash/ROM), volatile data memory (SRAM), and a rich set of peripherals on one silicon die. The PIC18 family uses an enhanced RISC Harvard architecture with 16-bit opcodes and an 8-bit data path, sitting in the mid-tier of Microchip's PIC portfolio above the baseline PIC10/12/16 families. The PIC18LF2331T-I/ML belongs to the PIC18F2x31 sub-family, which adds an 8-channel 10-bit ADC, an enhanced 8-bit PWM module with up to 6 channels, two CCP modules, an MSSP port for SPI/I2C, and a USART for asynchronous serial communication. This hierarchy (8-bit MCU -> PIC microcontroller -> RISC microcontroller -> embedded controller -> semiconductor) makes the part a strong fit for compact, mixed-signal, low-power embedded designs. Key features of the PIC18LF2331T-I/ML include 22 digital I/O pins, a 10-bit ADC with up to 8 channels, hardware PWM with programmable dead-band control suitable for motor-drive and power-conversion loops, an internal 8 MHz oscillator with PLL option, an ICD/ICSP debug header, and four timer modules (Timer0/1/2/3). Its nanoWatt Technology provides several software-selectable power-managed modes - Primary RC, Primary Crystal, and Secondary Oscillator - allowing the CPU core and peripherals to be clock-gated independently. Brown-out Reset (BOR), Watchdog Timer (WDT) with on-chip low-power oscillator, and Power-on Reset (POR) are built in. Typical applications for the PIC18LF2331T-I/ML include brushless DC (BLDC) and brushed DC motor control loops, sensor-fan and pump controllers, small appliance and white-goods subsystems, sensor-signal conditioning front-ends, and battery-powered IoT sensor nodes where its low-voltage LF core and QFN-28 footprint minimize board area. The integrated Motion Feedback Module (MFM) on this family can simplify Hall-sensor or BEMF signal decoding for sensored BLDC commutation. In the system hierarchy, it typically sits between a sensor / power-driver stage and the host processor, running real-time control firmware from on-chip Flash. When designing with this device, pay attention to the QFN-28 exposed pad - it must be soldered to a sufficiently large copper pour for thermal dissipation and electrical grounding. Decoupling should place 100nF and 10uF caps close to VDD/VSS, and the ICSP/ICD pins must be reserved for in-circuit programming. Pair the MCU with a Microchip TC4427 or TC427 driver if the PWM outputs need to drive power MOSFETs directly. This page combines distributor pricing, drop-in same-package alternatives, and application guidance - a synthesis not found in the manufacturer datasheet alone.

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PIC18LF2331T-I/MM - 8-bit 40MHz MCU, 8KB Flash, 22 I/O | Microchip
PIC18LF2331T-I/MM

PIC18LF2331T-I/MM - 8-bit 40MHz MCU, 8KB Flash, 22 I/O | Microchip

The Microchip Technology PIC18LF2331T-I/MM is an 8-bit RISC microcontroller in the PIC18F family, offering 8KB of Flash program memory, 768 bytes of RAM, 22 I/O pins and a 40 MHz CPU core, all packaged in a 28-lead QFN-S (6x6 mm) with exposed thermal pad. The 'LF' suffix denotes the low-Vdd (2.0V-5.5V) variant suitable for battery-powered and energy-efficient designs, while the 'T' indicates tape-and-reel packaging for high-volume SMT assembly. This member of the PIC18F2331/2431 family integrates high-performance peripherals aimed at motor control and power-conversion feedback loops, including a 10-bit ADC, a motion-feedback module, capture/compare/PWM modules and enhanced USART, making it well suited for closed-loop digital control. An 8-bit PIC microcontroller is a Harvard-architecture RISC device that executes one instruction per clock cycle (except branches) and provides deterministic interrupt latency, which is essential in real-time embedded control. The PIC18 family sits within Microchip's broader 8-bit portfolio, alongside PIC10, PIC12, PIC16 and the newer PIC18 K-series, and forms the upper performance tier with the largest instruction set (77 instructions) and the richest peripheral mix. These MCUs typically replace discrete logic and analog circuitry in cost-sensitive industrial and consumer products by integrating CPU, non-volatile program memory, data EEPROM, RAM and configurable I/O on a single die. Key features of the PIC18LF2331T-I/MM include an industrial temperature range of -40C to +85C, low-power sleep modes with nanoWatt technology, an enhanced flash program memory rated for typical endurance of 100K erase/write cycles, and on-chip data EEPROM of 256 bytes. The 28-QFN-S package reduces board footprint versus 28-pin SOIC while still exposing 22 general-purpose I/O lines and supports up to 10 MHz operation at 2.0V and 40 MHz at 4.2V-5.5V. The device uses a 16-bit instruction word with a 21-bit program counter that can address 2 MB of linear program space, plus a hardware multiplier and 8x8 single-cycle hardware multiply. Peripheral integration includes up to five CCP/PWM channels, two analog comparators, two enhanced USART modules and a 10-bit A/D converter with up to 9 channels, enabling compact BLDC motor control, UPS, power-supply feedback and instrumentation front-ends. Typical applications include sensorless and sensored BLDC/PMSM motor drives, switched-mode power supply digital feedback, industrial process control, HVAC fan control, small appliance motor control and battery chargers. Its wide operating voltage also makes it a fit for portable measurement and consumer appliances. When designing with this part, ensure VDDCORE/VDD decoupling uses 100 nF and bulk caps placed within 5 mm of the pins, that unused I/O are configured as outputs low to minimize shoot-through current, and that the in-circuit serial programming (ICSP) pins (PGC/PGD) are accessible for firmware updates. This page consolidates distributor pricing, drop-in alternatives drawn from Microchip's PIC18LF2331/2431 family and the broader PIC18F low-voltage portfolio, plus practical design notes not found in the manufacturer datasheet.

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PIC18LF2331T-I/SO - 8-bit PIC18 MCU, 8KB Flash, 40MHz, 28-SOIC | Microchip
PIC18LF2331T-I/SO

PIC18LF2331T-I/SO - 8-bit PIC18 MCU, 8KB Flash, 40MHz, 28-SOIC | Microchip

The Microchip Technology PIC18LF2331T-I/SO is an 8-bit PIC18F-family microcontroller with 8KB of Flash program memory (4K x 16), 768 bytes of RAM, and a maximum CPU clock of 40MHz, housed in a 28-pin SOIC (SO) package. The "LF" prefix indicates a low-voltage variant that operates down to 2.0V, while the "T" suffix denotes tape-and-reel packaging and "-I" indicates the industrial temperature grade (-40C to +85C). On-chip peripherals highlighted in distributor listings include a power-control PWM module, motion-feedback modules, and up to 22 I/O pins, making this part a member of Microchip's PIC18F2331/2431/4331/4431 motion-control family. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash), data memory (RAM), and peripherals such as timers, ADCs, communication interfaces, and I/O pins. The PIC18 family uses an enhanced 8-bit Harvard RISC architecture with a 16-bit instruction word, which keeps code density high while instruction execution remains single-cycle at 40MHz (10 MIPS). MCUs sit at the lowest tier of embedded systems alongside microprocessors, DSPs, and FPGAs, and they are categorized as "8-bit" because their ALU and data bus operate on 8-bit words. Key features include 8KB (4K x 16) Flash, 768 bytes of RAM, 256 bytes of EEPROM, an integrated 10-bit ADC, enhanced USART, MSSP (SPI/I2C), and dedicated motion-feedback peripherals including a quadrature encoder interface and power-control PWM. The 28-SOIC package is a wide-body gull-wing SOIC suited for hand-soldered prototypes and industrial designs where the small QFN alternative is undesirable. The "LF" silicon allows operation from 2.0V to 5.5V, supporting battery-powered designs. The PIC18F2331 architecture uses a modified Harvard core with separate program and data buses and a hardware multiply unit, delivering deterministic interrupt response at 10 MIPS. The motion-feedback modules on this die are designed for sensorless or sensored BLDC/PMSM motor control, reducing external component count compared to a generic MCU + external gate-driver approach. Typical applications include sensorless BLDC motor control, sensored BLDC/PMSM drives, low-voltage industrial automation, fans and pumps, and small appliance control. The 40MHz CPU and motion-control peripherals allow torque/speed loop closure entirely in firmware. Design considerations include selecting a crystal or oscillator that matches the application bandwidth, ensuring the 2.0V minimum is respected for battery-powered designs, and using Microchip's MPLAB X IDE plus MPLAB C18 or XC8 compilers for firmware development.

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PIC18LF23K22-E/ML - 8KB Flash XLP MCU 28-QFN | Microchip
PIC18LF23K22-E/ML

PIC18LF23K22-E/ML - 8KB Flash XLP MCU 28-QFN | Microchip

The Microchip Technology PIC18LF23K22-E/ML is an 8-bit PIC microcontroller in the PIC18 K-series with nanoWatt XLP (eXtreme Low Power) technology, housed in a 28-pin QFN (6x6 mm) package with exposed pad. Key headline parameters: 8 KB Flash program memory (4K x 16), 768 bytes RAM, 256 bytes EEPROM, and a maximum CPU clock of 64 MHz yielding up to 16 MIPS instruction throughput. The -E temperature grade specifies an operating range of -40C to +125C. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program and data memory, peripheral interfaces, and interrupt logic into one package. PIC18 microcontrollers sit in Microchip's 8-bit mid-range portfolio above PIC16 and PIC12 parts, using a 16-bit instruction word with 8-bit data path. The 'LF' prefix denotes the 1.8-3.6V low-voltage variant of the K22 family, and 'XLP' indicates the nanoWatt XLP power-management features including sleep currents below 100 nA typical and multiple idle/sleep modes. Differentiating features of the PIC18LF23K22 include the K-series peripheral set: an integrated mTouch capacitive touch sensing module, multiple PWM outputs with enhanced capture/compare/PWM (ECCP), 12-bit ADC with up to 17 channels, two comparators, an EUSART, MSSP I2C/SPI, and three timers. The 28-QFN package provides 25 programmable I/O pins and the exposed pad enables efficient thermal dissipation for full industrial-temperature operation. The K22 architecture uses a Harvard bus with separate program and data paths, and supports Microchip's MPLAB X IDE, XC8 compiler, and PICkit/SNAP ICD programmers. Code developed on the PIC18F23K22 (5V) variant migrates directly to the LF (3.3V) variant, allowing a single firmware image to target multiple rails. The device is suitable for battery-powered applications that require low sleep current combined with sufficient MIPS to handle communication stacks. Typical applications include battery-powered sensor nodes, capacitive touch user interfaces, low-power wireless companion MCUs, industrial sensor conditioning, and USB-to-UART bridges using the EUSART. The -40C to +125C operating range and nanoWatt XLP modes extend battery life in remote or energy-harvesting designs. When designing with this part, ensure the exposed pad on the QFN is soldered to a sufficiently large copper pour for thermal and electrical ground performance, and configure the configuration bits for the desired oscillator mode and watchdog timer behavior. The LF variant must not be powered above 3.6V - use the PIC18F23K22 (5V tolerant) variant for higher rails. This page consolidates distributor pricing, pin-compatible alternatives in the same 28-QFN footprint, and design notes beyond the manufacturer datasheet to assist engineers evaluating the PIC18LF23K22-E/ML for embedded designs.

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PIC18LF23K22-E/MV - 8KB Flash 16-I/O XLP MCU | Microchip
PIC18LF23K22-E/MV

PIC18LF23K22-E/MV - 8KB Flash 16-I/O XLP MCU | Microchip

The Microchip PIC18LF23K22-E/MV is an 8-bit PIC18-family RISC microcontroller with 8KB Flash program memory, 768 bytes RAM, and 256 bytes EEPROM, housed in a 28-pin UQFN EP (6 mm x 6 mm) package with exposed pad. It operates from a 2.0V to 5.5V supply at up to 25 MHz (or 48 MHz internal oscillator per datasheet headline) and provides 16 digital I/O pins, making it a low-power, high-performance device aimed at battery-powered and energy-harvesting applications. A microcontroller (MCU) is an integrated circuit that combines a CPU core, program memory, data memory, and programmable peripherals on a single die. The PIC18LF23K22-E/MV sits inside Microchip's nanoWatt XLP (eXtreme Low Power) product line - meaning it ships with deep-sleep, sleep, idle, and dozing modes that drop core current into the nanoamp range. As an 'LF' (low-voltage) variant, it is specified for 2.0-5.5V operation, distinguishing it from the 'F' (standard) sibling which starts at 1.8V but targets higher temperatures and slightly different oscillator behavior. Key features include 8KB self-programmable Flash, 768 bytes SRAM, 256 bytes data EEPROM, 10-bit ADC up to 19 channels, multiple serial peripherals (EUSART, MSSP for SPI/I2C), and nanoWatt XLP power management with claimed sleep currents below 20 nA typical. The 28-pin UQFN EP package with exposed thermal pad offers strong thermal performance and a compact 6 mm x 6 mm footprint suitable for dense PCB layouts. The architecture is a Harvard-style RISC core with a hardware multiplier, 16-bit instructions, and a deterministic instruction pipeline. The 25 MHz CPU clock combined with a 4-cycle instruction cycle yields an instruction throughput of 6.25 MIPS, with hardware peripheral engines offloading timers, capture/compare, PWM, and 10-bit ADC conversion - giving designers deterministic real-time behavior for motor control, sensor sampling, and power-converter feedback loops. Typical applications include battery-powered IoT sensor nodes, low-power wireless remote controls, HVAC and smart-building sensors, portable medical monitoring accessories, and industrial metering where extended battery life, deterministic peripheral response, and small PCB footprint matter. The integrated 10-bit ADC, EUSART, and MSSP peripherals cover most sensor-bus and wired-comms requirements without an external bridge chip. When designing with this device, place the 0.1 uF decoupling capacitor within 2-3 mm of each VDD pin and a bulk capacitor near the exposed pad for ground return, as the QFN's bottom pad is the primary thermal and electrical path to GND. Always configure the LF variant's voltage regulator in full-PLL-bypass mode for sub-3.3V rails to keep sleep current in the nanoWatt XLP regime. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes that the bare manufacturer datasheet does not present together.

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