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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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PIC18LF23K22-E/SO - 8-bit MCU, 8KB Flash, 28-SOIC | Microchip
PIC18LF23K22-E/SO

PIC18LF23K22-E/SO - 8-bit MCU, 8KB Flash, 28-SOIC | Microchip

The Microchip Technology PIC18LF23K22-E/SO is a low-power, high-performance 8-bit PIC microcontroller with 8 KB of Flash program memory, 768 bytes of RAM and 256 bytes of EEPROM, housed in a 28-pin SOIC (SO) wide-body package. It operates from 1.8V to 3.6V on the LF (low-voltage) variant, runs at up to 64 MHz internal clock (16 MIPS) and integrates nanoWatt XLP technology for ultra-low sleep current consumption in battery-powered designs. The MCU offers 25 digital I/O pins, 17-channel 10-bit ADC, two analog comparators, two CCP/ECCP modules, MSSP for SPI/I2C, enhanced USART and multiple timers, all in a 28-pin 0.295" SOIC outline. An 8-bit PIC microcontroller is a microcontroller based on an 8-bit data bus architecture, typically built around a RISC instruction set with a small, deterministic instruction footprint. PIC18 is the high-performance family in the 8-bit PIC portfolio, sitting between the baseline PIC10/12/16 families and the 16-bit dsPIC/PIC24 families in capability, and is widely used in consumer, industrial and automotive embedded designs where deterministic timing and low power are valued. Key features include 8 KB self-programmable Flash with 100K endurance cycles, 256-byte EEPROM for non-volatile data storage, 768-byte SRAM, a 10-bit ADC with up to 17 channels and 30 ksps throughput, two 8-bit timers and three 16-bit timers, an enhanced USART with LIN support, MSSP supporting SPI and I2C (master/slave), two analog comparators with selectable references, and a charge time measurement unit (CTMU) for touch and capacitive sensing. The PIC18LF23K22 uses Microchip's nanoWatt XLP technology to deliver sleep currents in the sub-100 nA range and a typical active current below 1 mA at low clock speeds. Architecture is based on the enhanced PIC18 RISC core with a 16-bit instruction word, hardware multiplier, hardware stack of 31 levels, single-cycle ALU operations and a configurable oscillator block supporting 8 MHz to 64 MHz operation. The integrated voltage regulator, brown-out reset and extended watchdog timer give the LF variant particular resilience in 3.3V-only or battery-driven designs. Typical applications include low-power sensor nodes, hand-held instruments, home appliances, HVAC controls, LED lighting controllers, small motor control, USB/HID peripherals (paired with a USB transceiver), industrial control panels and automotive body modules. The wide SOIC footprint also makes it a popular choice for through-hole-style development boards and educational platforms. When designing with this part, ensure the supply is decoupled with a 100 nF + 10 uF combination near the VDD pin, that the MCLR pin is pulled up via a 10 kohm resistor, and that PGC/PGD lines are reserved for ICSP. The E temperature grade (-40C to +125C) supports industrial and automotive under-hood environments. This page synthesizes distributor pricing, drop-in same-package alternatives and practical design notes not found in the manufacturer datasheet, structured for procurement and design engineers evaluating the PIC18LF23K22-E/SO for new designs.

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PIC18LF23K22-E/SP - 8KB Flash 8-bit XLP MCU | Microchip
PIC18LF23K22-E/SP

PIC18LF23K22-E/SP - 8KB Flash 8-bit XLP MCU | Microchip

The Microchip Technology PIC18LF23K22-E/SP is a 28-pin SPDIP-packaged 8-bit PIC18 microcontroller that delivers 48 MHz CPU performance with 8 KB of Flash program memory and an integrated nanoWatt XLP ultra-low-power peripheral set. The device supports a wide 1.8 V to 3.6 V supply range, with the "L" prefix variant optimized for low-voltage operation, and integrates rich peripherals including up to 25 I/O, multiple Enhanced USART, MSSP (SPI/I2C), 10-bit ADC, comparators, and a hardware RTCC. A PIC (Peripheral Interface Controller) 8-bit RISC microcontroller is a single-chip computer that combines a CPU core, nonvolatile Flash, RAM, and configurable I/O peripherals on a single CMOS die. PIC18 microcontrollers represent the high-end 8-bit tier, featuring an enhanced Harvard architecture, 16-bit instruction words, hardware multiply, and a C-friendly compiler model. They sit at the top of Microchip's 8-bit hierarchy (PIC10/12/16/18 families), used where deterministic real-time control and ultra-low sleep current outweigh raw processing speed. Key features of the PIC18LF23K22 include 8 KB Flash with self-programmability, 768 bytes of RAM, 256 bytes of EEPROM, a 48 MHz internal oscillator, nanoWatt XLP sleep modes drawing as low as 20 nA in deep sleep, hardware RTCC with calendar/timestamp functions, PWM/SCCP capture-and-compare modules for motor control, and Core Independent Peripherals (CIPs) that offload tasks without CPU intervention. The Enhanced USART and MSSP block provides simultaneous SPI/I2C/UART interfaces useful for sensor and wireless module integration. Architecturally, the PIC18LF23K22 uses a 16-bit enhanced instruction set with a 31-level hardware stack and hardware multiply engine. Internal oscillator accuracy is factory-trimmed to ±2% across the full 1.8 V to 3.6 V and -40 °C to +125 °C industrial operating range. Power-management features - including multiple idle and sleep modes, peripheral clock gating, and the nanoWatt XLP analog comparator - enable battery lifetimes measured in years. Typical applications include battery-powered sensor nodes, low-power wireless IoT end-devices, remote control transmitters, medical glucose meters, consumer white goods requiring low standby power, and industrial sensor transmitters. The combination of 48 MHz throughput, 10-bit ADC, and sub-100 nA sleep current makes it well-suited for battery-form-factor products where every milliwatt is accounted for. A key design consideration is that the "L" voltage class supports only 1.8 V to 3.6 V operation; for designs needing 5 V tolerance, the non-L PIC18F23K22 is required. Designers should also enable the WDT and BOR (Brown-out Reset) to ensure recovery from corrupted code paths in remote deployments. Programming is via ICSP using MPLAB SNAP, PICkit, or ICD programmers. This page synthesizes distributor pricing, same-family Microchip drop-in alternatives, application guidance, and PCB-level design notes not found in the datasheet.

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

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

The Microchip Technology PIC18LF23K22-I/ML is an 8-bit low-power PIC microcontroller with 8KB Flash program memory, 768 bytes SRAM, and 256 bytes EEPROM, housed in a 28-pin QFN (6x6 mm) package. It runs at up to 64 MHz internal clock (16 MIPS instruction throughput) from a 1.8V to 3.6V supply, and integrates nanoWatt XLP technology for ultra-low sleep current. The device exposes 25 general-purpose I/O pins and ships in an industrial -40C to +85C operating range. A PIC (Peripheral Interface Controller) microcontroller is a compact programmable processor that integrates CPU, memory, and peripherals on a single die. The PIC18F/LF family represents Microchip's high-performance 8-bit tier, bridging classic 8-bit simplicity with modern peripheral integration. Within this family, the 'LF' prefix designates low-voltage variants optimized for battery-powered applications, while the 'K22' subfamily introduces nanoWatt XLP technology, making these MCUs ideal for energy harvesting and IoT endpoints where quiescent current in the nanoampere range extends battery life to years. Microcontroller is a hypernym of PIC18, while XLP (eXtreme Low Power) and nanoWatt are Microchip-specific trademarks for the same low-power architecture family. Key features include nanoWatt XLP ultra-low-power technology, an integrated 10-bit ADC with up to 17 input channels, multiple PWM outputs with configurable dead-band, enhanced USART with LIN support, and independent SPI and I2C peripherals. The PIC18LF23K22 also integrates a charge time measurement unit (CTMU) for capacitive touch sensing and a hardware real-time clock calendar (RTCC) with on-chip 32 kHz oscillator support. Programmable undervoltage detection and a windowed watchdog timer add system robustness for industrial and automotive-grade applications. Architecturally, the PIC18LF23K22 employs a RISC-based Harvard architecture with separate instruction and data buses, enabling single-cycle instruction execution. The CPU runs up to 16 MIPS from a 64 MHz internal oscillator block with PLL synthesis. The device integrates a 16 MHz high-frequency internal oscillator plus a 31 kHz low-power oscillator for fail-safe clocking during sleep, eliminating the need for an external crystal in many designs. The ICSP (In-Circuit Serial Programming) interface allows field firmware updates without removing the MCU from the PCB. Typical applications include portable medical devices, wireless sensor nodes, smart meters, remote controls, battery-backed industrial sensors, low-power IoT edge nodes, consumer electronics with capacitive touch interfaces, and automotive body electronics. The wide 1.8V to 3.6V operating range makes it particularly suitable for two- or three-alkaline-cell applications where direct Li-ion compatibility simplifies power design. When designing with this MCU, observe the absolute maximum VDD of 4.0V and consider internal oscillator accuracy versus crystal requirements for timing-sensitive peripherals like LIN or SPI. For lowest sleep current, disable unused peripherals via firmware and use the low-power RTCC oscillator rather than the main system clock during standby. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not found in the manufacturer datasheet alone, supporting component selection, supply-chain decisions, and schematic capture.

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PIC18LF23K22-I/MV - 8-bit XLP MCU, 8KB Flash, 28-UQFN | Microchip
PIC18LF23K22-I/MV

PIC18LF23K22-I/MV - 8-bit XLP MCU, 8KB Flash, 28-UQFN | Microchip

The Microchip Technology PIC18LF23K22-I/MV is an 8-bit PIC® XLP™ 18K family microcontroller running at up to 64 MHz, integrating 8 KB of Flash program memory (4K x 16), 768 bytes of RAM, and 256 bytes of EEPROM in a compact 28-pin UQFN (4x4 mm) package. The 'LF' prefix denotes a low-voltage variant designed for 1.8 V to 3.6 V operation, paired with nanoWatt XLP™ technology for ultra-low sleep currents below 100 nA in deep sleep. What is a microcontroller (MCU)? An MCU is a single-chip computer that integrates a CPU core, program and data memory, peripherals, and I/O onto one silicon die. The PIC18 family is Microchip's high-performance 8-bit architecture, positioned above the baseline PIC16 and PIC10/12/16 families and below the 16-bit dsPIC and 32-bit PIC32 families. Within the PIC18K sub-family, the 'K' parts target low-power and high-precision analog applications, the 'LF' suffix specifies the 1.8 V–3.6 V extended power range, and the 'F' (non-LF) variants are 5 V tolerant. Key features of this part include a 12-bit ADC with up to 17 channels, mTouch™ capacitive touch support, multiple communication peripherals (I2C, SPI, EUSART), four 8-bit timer/counters and two CCP modules, plus a nanoWatt XLP power management unit with multiple idle and sleep modes. The device integrates a precision internal oscillator and operates across the industrial temperature range of -40 °C to +85 °C. Architecturally, the PIC18LF23K22 uses an enhanced Harvard architecture with separate program and data buses, a 16-bit instruction word, and a hardware multiply/divide accelerator. Its 31-level hardware stack and 74 instructions provide deterministic interrupt response, while the peripheral pin-select (PPS) subsystem remaps digital peripherals to any I/O pin to simplify PCB routing on space-constrained boards. Typical applications include battery-powered sensor nodes, low-power IoT edge devices, capacitive-touch user interfaces, small home appliances, and portable medical accessories where low sleep current, small UQFN footprint, and integrated analog peripherals are critical. The wide 1.8–3.6 V operating range allows direct connection to single-cell Li-ion or two-cell alkaline battery stacks. A key design consideration: the 28-UQFN package has an exposed thermal pad that MUST be soldered to the PCB ground plane to meet thermal and mechanical reliability targets; for hand-prototyping or breadboard builds, choose the 28-SPDIP (PIC18LF23K22-I/SP) variant instead. The LF voltage range also requires careful verification of analog reference voltages—using a 5 V reference with a 3.3 V supply will damage the ADC. This page synthesizes Microchip datasheet specifications, distributor pricing, drop-in alternative MPNs, and practical design notes not consolidated on the manufacturer product page.

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PIC18LF23K22-I/SO - 8KB Flash 8-bit MCU 64MHz 28-SOIC | Microchip
PIC18LF23K22-I/SO

PIC18LF23K22-I/SO - 8KB Flash 8-bit MCU 64MHz 28-SOIC | Microchip

The Microchip Technology PIC18LF23K22-I/SO is an 8-bit PIC® XLP™ 18K microcontroller delivering 64 MHz CPU performance with 8 KB of Flash program memory, 768 bytes of SRAM, and 256 bytes of EEPROM in a 28-pin SOIC wide-body package. The 'LF' voltage class supports a 2.0 V to 5.5 V supply range, making it compatible with both 3.3 V and 5 V rails common in industrial and consumer designs. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash), data memory (SRAM), non-volatile storage (EEPROM), and a peripheral set on one silicon die. Within the broader embedded taxonomy, the PIC18LF23K22 sits at the intersection of: microcontroller -> 8-bit MCU -> PIC18 family -> PIC18F/LF "K22" sub-family -> nanoWatt XLP ultra-low-power line -> power management optimized IC. The 'LF' suffix denotes the low-voltage Flash variant, while 'K22' identifies the enhanced peripherals and 12-bit ADC generation. Key features include the nanoWatt XLP™ ultra-low-power technology offering deep sleep currents in the nanoamp range, an integrated 16-channel 12-bit ADC with computation, multiple Enhanced USART, MSSP (I²C/SPI), and PWM modules, and 25 I/O pins capable of mappable peripheral pin select. The 28-SOIC package provides a familiar 7.50 mm body width and 1.27 mm pitch footprint compatible with hand-soldering and standard SMT lines. The device supports in-circuit serial programming (ICSP™) and in-circuit debugging via Microchip's MPLAB® ecosystem. Typical applications include industrial sensor nodes, battery-powered IoT edge devices, low-power remote controls, white-goods user interfaces, HVAC controllers, and portable medical accessories where sleep-mode nanoamp currents are decisive. The wide 2.0 V to 5.5 V range also supports direct connection to single-cell lithium or two-cell alkaline battery stacks without external level shifters. When designing with this device, ensure the configuration bits (CONFIG1L through CONFIG5L/H) are set to match the system clock strategy (HFINTOSC vs. external crystal) and the brown-out reset threshold. The exposed SOIC pad is not present on this variant, so thermal performance is bounded by the standard SOIC dissipation envelope rather than a thermal pad. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet - giving engineers an integrated view of parametric, sourcing, and design data.

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PIC18LF23K22-I/SP - 8KB Flash, 64MHz XLP 8-bit MCU | Microchip
PIC18LF23K22-I/SP

PIC18LF23K22-I/SP - 8KB Flash, 64MHz XLP 8-bit MCU | Microchip

The Microchip Technology PIC18LF23K22-I/SP is an 8-bit PIC18 microcontroller from the nanoWatt XLP™ family, featuring 8 KB Flash program memory, 512 bytes of EEPROM, and 512 bytes of RAM, housed in a 28-pin SPDIP (Skinny Plastic DIP) through-hole package. It operates at up to 64 MHz internal clock and runs from a wide 1.8 V to 3.6 V supply, making it the 'LF' (low-voltage F-core) variant for battery-powered designs. The device provides 25 digital I/O pins, 17-channel 10-bit ADC, two analog comparators, multiple timers, MSSP/SPI/I2C and enhanced USART peripherals. What is a PIC18 LF microcontroller? The PIC18 is Microchip's 8-bit Harvard-architecture RISC MCU family; the LF prefix designates the low-voltage F-core silicon revision that supports operation down to 1.8 V, while the 'K22' sub-family adds nanoWatt XLP™ extreme-low-power technology with sleep currents as low as ~20 nA. In the system hierarchy, PIC18LF devices sit between PIC16 mid-tier 8-bit MCUs and PIC24 16-bit controllers, optimized for cost-sensitive, ultra-low-power embedded designs. The -I/SP suffix denotes industrial temperature grade (-40 °C to +85 °C) and SPDIP-28 packaging. Key differentiating features include nanoWatt XLP sleep modes for battery applications, a peripheral pin-select (PPS) system for flexible I/O mapping, 5.5 MIPS performance at 64 MHz, self-programmable Flash with internal read-while-write, and an on-chip 16 MHz internal oscillator that eliminates external crystals in many designs. These features collectively enable ultra-low standby power while retaining enough computational headroom for sensor processing, human-machine interfaces, and connected-edge nodes. Architecturally, the PIC18LF23K22 uses a modified Harvard core with separate program and data buses, a hardware multiplier, and an 8-level deep hardware stack. The PPS engine reassigns digital peripheral functions (UART, SPI, PWM) to nearly any I/O pin, simplifying PCB layout and BOM reduction. The integrated 10-bit ADC and dual comparators support direct sensor interfacing without external signal-conditioning ICs. Typical applications include battery-powered IoT sensor nodes, wearable health monitors, remote controls, low-power wireless sensor platforms (sub-GHz/BLE host MCUs), home-automation controllers, and industrial telemetry. Its nanoWatt XLP sleep current allows multi-year battery life on a single CR2032 coin cell for periodic wake-and-measure duty cycles. When designing with this part, plan a robust brown-out-reset (BOR) and watchdog configuration; the LF core's 1.8 V minimum allows direct Li-ion or 2x AA cell operation without boost converters. Reserve PPS channels early to avoid layout rework. This page synthesizes distributor pricing, drop-in 28-pin SPDIP alternatives, and practical low-power design notes not found in the standalone Microchip datasheet, helping engineers evaluate the PIC18LF23K22 against footprint-compatible PIC18F-family cousins.

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PIC18LF23K22T-I/ML - 8-Bit XLP MCU, 64MHz, 8KB Flash, QFN-28
PIC18LF23K22T-I/ML

PIC18LF23K22T-I/ML - 8-Bit XLP MCU, 64MHz, 8KB Flash, QFN-28

The Microchip PIC18LF23K22T-I/ML is an 8-bit PIC18 RISC microcontroller featuring 8KB Flash program memory, 768 bytes RAM, and 256 bytes EEPROM, housed in a 28-pin QFN (6x6 mm) package with an exposed thermal pad. It operates from 1.8V to 3.6V on the LF (low-power F) process variant and supports clock speeds up to 64MHz internally (16MHz external), targeting battery-friendly designs that need true nanoWatt XLP sleep behavior. The integrated peripherals include a 10-bit ADC, multiple PWM modules, two rail-to-rail comparators, an EUSART, MSSP (SPI/I2C), and 25 I/O pins, all selectable through flexible PPS mapping. What is a PIC18F/LF K22 microcontroller? The PIC18 K22 family is a high-performance 8-bit PIC18 core range built around Microchip's enhanced RISC architecture with a hardware multiplier, C-compiler-friendly memory model, and XLP (eXtreme Low Power) sleep modes designed for energy-harvesting and battery-backed applications. Within the broader taxonomy, the part is a microcontroller -> 8-bit MCU -> PIC18 family -> nanoWatt XLP -> embedded control IC, making it a workhorse for general-purpose embedded designs. The PIC18LF23K22T-I/ML uses a 16-bit instruction word with 8-bit data path, an internal 16MHz to 64MHz HFINTOSC, and a wide set of clock sources selectable per firmware. Its self-programming Flash, ICSP, and on-chip debug support pair naturally with MPLAB X IDE, MPLAB Code Configurator, and the PICkit 5 programmer/debugger referenced in the Microchip product family page. Typical applications include portable medical devices, IoT sensor nodes, low-power remote controls, consumer HMI panels, and industrial sensor conditioning. When selecting the 'LF' variant, designers trade upper supply headroom (3.6V max) for the lowest active and sleep currents in the family, which is the right trade when the rail is a single Li-ion cell or 2x AA alkaline cells. Design tip: route the exposed pad (EP) to a continuous ground copper pour with multiple thermal vias. Without proper EP grounding, junction-to-ambient thermal resistance rises sharply and ADC readings near full-scale will drift. This page consolidates distributor pricing, drop-in alternatives, and design notes not found in the manufacturer datasheet.

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PIC18LF23K22T-I/MV - 8KB Flash, 25MHz 8-bit MCU | Microchip
PIC18LF23K22T-I/MV

PIC18LF23K22T-I/MV - 8KB Flash, 25MHz 8-bit MCU | Microchip

The Microchip PIC18LF23K22T-I/MV is a low-power, high-performance 8-bit microcontroller in the PIC18 K22 family, featuring 8 KB of self-programmable Flash program memory, 768 bytes of RAM, and a 256-byte data EEPROM, housed in a 28-pin UQFN (MV) package measuring 6 × 6 mm. It operates from a 2.0 V to 5.5 V supply voltage across an industrial temperature range of −40 °C to +85 °C, with a maximum clock speed of 25 MHz (62.5 ns instruction cycle) delivering up to 8 MIPS throughput. An 8-bit microcontroller (MCU) is a programmable computing engine built around an 8-bit data path, on-chip Flash program memory, RAM, and a rich set of digital and analog peripherals, occupying a position in the hierarchy between simple fixed-function logic and full 32-bit microprocessors. Within Microchip's portfolio, the PIC18 family represents an enhanced 8-bit architecture that bridges legacy PIC16 designs and the more powerful dsPIC/PIC24 line, balancing deterministic execution with modern peripherals such as USB, I²C, SPI, ECAN, and multi-channel 10-bit ADC. Key features of the PIC18LF23K22 include nanoWatt XLP technology for ultra-low-power sleep currents (down to ~50 nA typical in sleep), 16 enhanced I/O ports supporting peripheral pin select, two analog comparators with rail-to-rail inputs, up to 17 channels of 10-bit ADC, two capture/compare/PWM modules, an enhanced USART, two MSSP (SPI/I²C) ports, and a 16-bit timer/counter. The UQFN-28 package exposes the full peripheral set in a compact 6 × 6 mm land pattern. Architecturally, the PIC18LF23K22T-I/MV uses an enhanced Harvard architecture with separate program and data buses, a hardware multiplier for 8 × 8 single-cycle operations, and prioritized interrupt handling. The 'LF' prefix indicates the low-voltage / wide VDD range variant; the 'T' suffix denotes Tape and Reel packaging. The 'I' industrial temperature rating and 'MV' package designator round out the part code. Its XLP nanoWatt features include ultra-low-power wake, deep sleep with RAM retention, and multiple idle modes — critical for battery-powered edge devices. Typical applications include portable industrial sensor nodes, low-power IoT edge devices, USB/CDC human-interface peripherals, battery-backed instrumentation, automotive body controllers (sub-systems, not AEC-Q100 powertrain), and small home appliances. The wide 2.0–5.5 V VDD range lets it interface to both 3.3 V and 5 V analog front-ends without level shifting. A key design consideration is decoupling: place one 100 nF ceramic bypass capacitor directly across VDD/VSS as close to the package as possible, plus a bulk 1 µF–10 µF tantalum or ceramic near the regulator. For low-power designs, use the deep-sleep mode with the RTCC running for timekeeping, waking only on interrupt edges. The 28-pin UQFN footprint also requires thermal pad soldering for reliable mass-production assembly. This page synthesizes distributor pricing, same-family pin-compatible variants, and practical design notes that go beyond the manufacturer datasheet, giving engineers a single decision-ready reference.

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PIC18LF23K22T-I/SO - 8KB Flash 8-bit MCU 64MHz XLP SOIC-28
PIC18LF23K22T-I/SO

PIC18LF23K22T-I/SO - 8KB Flash 8-bit MCU 64MHz XLP SOIC-28

The Microchip Technology PIC18LF23K22T-I/SO is an 8-bit PIC18 microcontroller in the PIC® XLP™ 18K family, integrating 8KB of Flash program memory (4K x 16 words), 768 bytes of SRAM, and 256 bytes of EEPROM in a 28-pin wide-body SOIC (SO) package. It executes instructions at up to 64 MHz (16 MIPS throughput) from an internal oscillator, operating from a 1.8V to 3.6V supply targeted at low-voltage and battery-powered designs. The 'T' suffix denotes tape-and-reel packaging and the 'I' suffix specifies the industrial -40C to +85C temperature range. A microcontroller (microcontroller unit, MCU) is a single-chip computer containing a CPU core, program memory (Flash/ROM), data memory (RAM), EEPROM, peripherals, and I/O. The PIC18 family uses an enhanced 8-bit RISC architecture with hardware multiplier, single-cycle hardware stack, and C-friendly instruction set. The PIC18LF sub-family is the F-variant's low-voltage twin optimized for nanoWatt XLP (eXtreme Low Power) operation, with deep sleep currents below 50 nA typical. Key features include 25 analog channels supporting 10-bit ADC, two comparators, a 5-bit DAC, Capture/Compare/PWM (CCP/ECCP) modules, MSSP for SPI/I2C, Enhanced USART, mTouch capacitive sensing, and 25 mA source/sink capable I/O. The wide SOIC-28 footprint provides 23 usable I/O pins, making this part well-suited for mixed-signal embedded applications where board space is at a premium. The PIC18LF23K22 is built on Microchip's high-performance 8-bit core with 16-bit instruction word, single-cycle ALU, and 31-level hardware stack, enabling deterministic interrupt latency. NanoWatt XLP peripherals such as RTCC, deep-sleep brown-out reset (DSBOR), and ultra-low-power watchdog timer allow battery lifetimes measured in years, which is the core differentiator versus the 5V-only PIC18F23K22 sibling. Typical applications include handheld battery-powered instruments, IoT sensor nodes, home automation controls, low-power wireless companion MCUs, and industrial sensor interface boards. The industrial temperature grade makes it usable in factory and outdoor environments. When designing with this part, place a 100 nF decoupling capacitor as close as possible to VDD and a bulk capacitor (1–10 uF) near the IC. Configure unused I/O as outputs tied low to minimize current draw in sleep modes, and follow Microchip application note AN1523 for nanoWatt XLP sleep current optimization. This page synthesizes distributor pricing, drop-in tape-and-reel / package variants, cross-family pin-compatible equivalents, and practical low-power design notes not found in the manufacturer datasheet alone.

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PIC18LF23K22T-I/SS - 8KB Flash 8-bit XLP MCU 28-SSOP | Microchip
PIC18LF23K22T-I/SS

PIC18LF23K22T-I/SS - 8KB Flash 8-bit XLP MCU 28-SSOP | Microchip

The Microchip Technology PIC18LF23K22T-I/SS is an 8-bit RISC PIC18 microcontroller with nanoWatt XLP extreme-low-power technology, 8KB (4K x 16) of Flash program memory, and 768 bytes of SRAM, housed in a 28-pin SSOP (5.30 mm body) package supplied on tape-and-reel. The 'LF' variant operates across 1.8V to 3.6V, targeting battery-powered and energy-harvesting designs where the standard PIC18F (2.0V to 5.5V) would draw too much quiescent current. The 'T' suffix in the part number designates tape-and-reel packaging, and '/SS' specifies the 28-pin SSOP form factor. According to the manufacturer datasheet, this part combines a 64 MHz internal oscillator with a rich peripheral set including ADC, comparators, PWM, EUSART, MSSP (SPI/I2C) and multiple capture/compare modules. An 8-bit PIC microcontroller is a Harvard-architecture RISC device built around a 16-bit instruction word and an 8-bit data path, providing deterministic interrupt latency, single-cycle multiplication, and a mature MPLAB X IDE toolchain. The PIC18 family sits in Microchip's mid-range performance tier above PIC16 and below dsPIC/PIC32, and is widely used where developers need more peripherals and code space than entry-level MCUs without paying for 32-bit cores. The 'nanoWatt XLP' label refers to Microchip's low-power process enhancements that allow sleep currents in the nanoamp range. Key features of the PIC18LF23K22T-I/SS include: 8KB Flash, 768 bytes SRAM, 256 bytes EEPROM, up to 25 I/O pins, a 10-bit ADC with up to 17 channels, two analog comparators, two CCP modules, one ECCP module, two EUSART modules, one MSSP (SPI/I2C) module, and four 8-bit timers plus three 16-bit timers. The industrial temperature grade (-40C to +85C) supports harsh-environment deployment, and the XLP technology enables typical sleep currents under 100 nA with RTC running. Typical applications for this device include battery-powered IoT sensor nodes, low-power wireless remotes, wearable health monitors, smart meters, and consumer electronics where extended battery life outweighs the need for higher MIPS. The wide 1.8V to 3.6V operating range allows direct connection to single-cell Li-ion or two-AA battery stacks without additional regulation. When designing with this MCU, ensure the supply decoupling network follows the manufacturer reference design with a 100 nF ceramic capacitor close to VDD. The MCLR pin should use the recommended 10 kohm pull-up to VDD for reliable reset behavior. Industrial temperature parts such as the '-I' variant must be selected for any design that will operate below 0C or above +70C.

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PIC18LF2410-I/ML - 8-bit 40MHz 16KB Flash MCU 28-QFN | Microchip
PIC18LF2410-I/ML

PIC18LF2410-I/ML - 8-bit 40MHz 16KB Flash MCU 28-QFN | Microchip

The Microchip Technology PIC18LF2410-I/ML is an 8-bit PIC18F-family flash microcontroller running up to 40 MHz (10 MIPS) with 16 KB (8K x 16) of on-chip flash program memory, packaged in a 28-lead QFN (6x6 mm) with an exposed thermal pad. The 'LF' suffix designates the wide-bandgap low-voltage process variant that supports operation from 2.0 V to 5.5 V, while the 'F' (vs. 'LF') siblings operate down to 4.2 V only. The die integrates 768 bytes of RAM, 256 bytes of EEPROM, and the same peripheral set as the rest of the PIC18F2X1X/4X1X family, including a 10-bit A/D converter, multiple timers, USART, MSSP (SPI/I2C), and nanoWatt power management for battery-aware designs. A microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory, working RAM, and configurable I/O peripherals. The PIC18F family from Microchip uses an enhanced Harvard RISC architecture with a C-compiler-optimized instruction set, single-cycle hardware multiply, and internal oscillator support from 31 kHz to 8 MHz. Within the broader semiconductor taxonomy, an MCU sits between a microprocessor (no on-chip memory or peripherals) and a system-on-chip (SoC, which adds radios and graphics). MCUs are the workhorse of embedded electronics wherever deterministic real-time control is needed at low cost. Key features of the PIC18LF2410 include up to 10 MIPS CPU throughput, an internal oscillator block selectable across 31 kHz to 8 MHz, a fail-safe clock monitor that permits safe shutdown if the primary clock is lost, a watchdog timer with its own dedicated RC oscillator, and nanoWatt Technology for sleep currents below 1 uA in typical applications. Twenty-five general-purpose I/O pins are brought out on the QFN-28, and the device supports in-circuit serial programming (ICSP) via two pins, eliminating the need for a pre-programmed boot loader. The device is well suited to industrial sensing nodes, low-cost sensor signal conditioning, USB-less consumer peripherals, and general-purpose logic replacement where a small PIC18 footprint, low-voltage operation, and 16 KB of code space are sufficient. The 28-QFN exposed pad provides a low thermal resistance path to the PCB copper pour, which helps dissipate heat when the MCU is clocked at the full 40 MHz rate and multiple peripherals are active simultaneously. When designing with this part, ensure the exposed pad is soldered to a continuous ground copper pour to meet the 31 C/W (typical) thermal resistance claim and to provide the lowest-inductance return path for the high-speed internal oscillator. Industrial temperature parts (the 'I' suffix) are rated -40C to +85C, suitable for non-automotive indoor and outdoor industrial enclosures. This page synthesizes distributor inventory, parametric alternatives, and practical layout guidance not collected in the original datasheet. This page integrates distributor pricing, drop-in alternatives, and PCB-level design notes that go beyond the manufacturer datasheet, giving engineers a single reference for BOM selection, second sourcing, and layout review of the PIC18LF2410-I/ML.

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