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PIC18F458T-I/PT - 8-bit 40MHz 32KB Flash MCU w/ CAN | Microchip
PIC18F458T-I/PT

PIC18F458T-I/PT - 8-bit 40MHz 32KB Flash MCU w/ CAN | Microchip

The Microchip Technology PIC18F458T-I/PT is an 8-bit PIC18F-series enhanced flash microcontroller with an integrated CAN (Controller Area Network) module, delivering 40 MIPS throughput from a 40 MHz oscillator in a 44-pin TQFP (10x10 mm) package. The device integrates 32 KB of flash program memory (16K x 16 words), 1.5 KB of SRAM, 256 bytes of EEPROM, and 33 digital I/O pins, plus a 10-bit ADC, multiple timers, and a CAN 2.0B peripheral that has made the PIC18F458 family a long-running reference design for embedded networking nodes. An 8-bit microcontroller (MCU) is a single-chip computer that combines a CPU, non-volatile program memory, volatile data memory, peripheral set, and I/O on one silicon die. The PIC18 family is Microchip's high-end 8-bit line, sitting above the PIC16 and baseline PIC10/12/14 families; the 'F' suffix indicates flash program memory, while the integrated CAN module distinguishes the PIC18F458 from the otherwise-similar PIC18F452. As a flash-based device, firmware can be re-programmed in-circuit through ICSP, and the architecture's 16-bit instruction word provides deterministic execution suitable for hard-real-time control. Key features of the PIC18F458T-I/PT include: 32 KB flash / 1.5 KB RAM / 256 B EEPROM, integrated CAN 2.0B controller with acceptance filters and mask registers, 10-bit ADC with up to 8 input channels and 100 Ksps conversion rate, three external interrupt sources, two capture/compare/PWM (CCP) modules plus an enhanced CCP, a USART with LIN support, an I2C/SPI peripheral, two 8-bit timers and three 16-bit timers, and a programmable 16-level hardware stack. The 'T' suffix denotes tape-and-reel packaging, and the '-I' industrial temperature grade supports operation from -40C to +85C. Architecturally, the PIC18F458 uses a Harvard RISC core with a 2-stage pipeline and 75 instructions (83 with extended opcode); the CAN module is implemented on-die with dedicated acceptance masks and filters that offload message filtering from the CPU, which was a significant advantage when CAN was first integrated onto 8-bit silicon. The wide 2.0V to 5.5V operating voltage makes the part tolerant of battery droop and unregulated rails, while the enhanced flash cell technology supports >100K erase/write cycles and >40-year data retention. Typical applications include automotive body and chassis networks (CAN nodes), industrial CANopen and DeviceNet slave nodes, HVAC controllers, sensor aggregation hubs, and embedded industrial controllers that require deterministic 8-bit performance with networking. The legacy PIC18F458 family has been the reference CAN MCU for many of these designs for two decades. When designing with this part, place decoupling 100 nF and bulk capacitors close to VDD/VSS pairs, keep the CAN TX/RX traces short and 90-ohm terminated per ISO 11898, and reserve the PGC/PGD pins for ICSP. Migrating to newer pin-compatible parts (PIC18F4585, PIC18F4480) is straightforward when larger flash or USB is required. This page synthesizes distributor stock and pricing, drop-in same-package alternatives from Microchip's PIC18 family, and practical design notes not assembled on the manufacturer datasheet - giving an engineer a one-shot view of the PIC18F458T-I/PT's fit, footprint, and replacement options.

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PIC18F45J10-I/ML - 8-bit 40MHz 32KB Flash MCU | Microchip
PIC18F45J10-I/ML

PIC18F45J10-I/ML - 8-bit 40MHz 32KB Flash MCU | Microchip

The Microchip PIC18F45J10-I/ML is an 8-bit PIC microcontroller in the PIC18J family, running at 40 MHz with 32 KB of Flash program memory and 1024 bytes of RAM, packaged in a 44-pin QFN (8x8 mm). It integrates an enhanced USART with LIN master/slave capability, two MSSP peripherals (SPI / I2C with address masking), a 10-bit ADC with up to 13 channels, and nanoWatt power-management technology. Operating voltage spans 2.0 V to 3.6 V with 1k Flash endurance and emulated EEPROM, targeting cost-sensitive general-purpose designs. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash/ROM), data memory (RAM), and peripheral interfaces (ADC, timers, communication ports) on one die. Within Microchip's taxonomy, the PIC18F45J10 belongs to the PIC18 family -> 8-bit MCU -> microcontroller -> embedded processor -> semiconductor. The 'J' suffix indicates a 2.0-3.6V nanoWatt variant, while 'F45' identifies the 32 KB Flash / 1024 RAM device, and 'J10' designates the specific peripheral set. Key differentiating features include nanoWatt power modes for battery-aware applications, hardware-realized I2C address masking for multi-slave buses, and the LIN-capable enhanced USART which simplifies automotive sub-bus implementation. The emulated EEPROM eliminates the need for an external serial EEPROM in data-logging subsystems, reducing BOM cost. Architecturally, the PIC18J10 family uses an enhanced Harvard architecture with a 16-bit instruction word and an 8-bit data path, plus a hardware multiplier that accelerates arithmetic operations versus the legacy PIC16 baseline. Internal RC oscillator options (31 kHz, 8 MHz with PLL) reduce external component count. Typical applications include home appliances, low-cost sensor nodes, industrial control panels, automotive body controllers via LIN, USB-to-UART bridges (using a companion TUSB chip), and battery-powered metering. The wide peripheral mix also supports small displays and keypad scanners. Designers should budget for decoupling on every VDD/VSS pair, route the ICSP/ICD pins to a 6-pin header for in-circuit debugging, and confirm that any 5V peripherals on the bus are level-shifted to the 3.3V MCU rail. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

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PIC18F45J10-I/P - 8-Bit 40MHz 32KB Flash MCU | Microchip
PIC18F45J10-I/P

PIC18F45J10-I/P - 8-Bit 40MHz 32KB Flash MCU | Microchip

The Microchip Technology PIC18F45J10-I/P is an 8-bit RISC microcontroller from the PIC18FxxJxx family, delivering 40 MHz performance from a 32 KB Flash program memory and 1 KB RAM in a 40-pin PDIP (DIP-40) package. It runs at 3 V typical supply and integrates an enhanced USART with LIN capability plus two synchronous serial ports with I2C address masking. Designed for cost-sensitive general-purpose embedded applications, the device provides 1 k Flash endurance, emulated EEPROM, and supports external crystal or clock sources. An 8-bit microcontroller (MCU) is a programmable integrated circuit that executes instructions 8 bits wide, balances code density with deterministic real-time behavior, and integrates CPU core, Flash, RAM, peripherals, and I/O on one die. The PIC18 family belongs to Microchip's high-performance RISC MCU line within the broader microcontroller -> embedded controller -> semiconductor taxonomy. 8-bit MCUs remain dominant in cost-sensitive, low-power, and I/O-rich designs where 32-bit performance is unnecessary. Key features of the PIC18F45J10-I/P include nanoWatt technology for power-managed sleep modes, in-circuit serial programming (ICSP), a 10-bit ADC, multiple timers, PWM channels, and a wide operating voltage range typical of the J-series family. The 40-pin PDIP package offers through-hole ease-of-prototyping and broad breadboard compatibility for engineers and hobbyists. Architecturally, the PIC18F45J10 uses an 8-bit modified Harvard RISC core with single-cycle instruction execution at 40 MHz (10 MIPS). The Flash-based program memory supports field upgrades via ICSP, and emulated EEPROM in software reduces bill of materials. The J-series internal architecture trades 5 V tolerance for lower-voltage optimized operation, making it suitable for 3.3 V designs. Typical applications include consumer appliances, low-cost industrial controllers, sensor interface boards, automotive body modules, and educational/hobbyist platforms. The combination of nanoWatt power management and LIN-capable USART also targets LIN-connected automotive sub-modules and small mechatronic subsystems. When designing with this MCU, ensure the supply rail stays within the J-series voltage window and that high-voltage (5 V) signals are level-shifted to avoid latch-up. Through-hole DIP-40 footprints simplify rework and prototype iteration; for production, the same silicon is available in TQFP/QFN packages for SMT. This page synthesizes distributor pricing, drop-in package-compatible alternatives, and practical design notes not collated in the manufacturer datasheet, giving engineers a faster path to part selection for 8-bit embedded designs.

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PIC18F45J10-I/PT - 8-bit 40MHz 32KB Flash MCU | Microchip TQFP-44
PIC18F45J10-I/PT

PIC18F45J10-I/PT - 8-bit 40MHz 32KB Flash MCU | Microchip TQFP-44

The Microchip Technology PIC18F45J10-I/PT is an 8-bit PIC18J-family microcontroller running at 40MHz, integrating 32KB of Flash program memory (16K x 16 words) and 1024 bytes of SRAM in a 44-pin TQFP (10x10 mm) package. It is built on Microchip's enhanced RISC core delivering up to 16 MIPS and is engineered for cost-sensitive general-purpose embedded designs that demand strong serial connectivity. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, non-volatile program memory (Flash/ROM), volatile working memory (RAM), peripherals, and I/O on one die. Within the broader taxonomy, an 8-bit MCU such as this PIC18F45J10 belongs to the microcontrollers family of integrated circuits, which itself sits under the Integrated Circuits category of discrete semiconductors. Designers choose 8-bit PIC parts when deterministic interrupt latency, simple toolchain (MPLAB X IDE), and low unit cost outweigh the throughput advantages of 16/32-bit Cortex-M alternatives. Key features of the PIC18F45J10-I/PT include 32KB Flash with 1k endurance, emulated EEPROM via Flash self-write, an enhanced USART with LIN master/slave support, two MSSP peripherals (SPI / I2C with address masking), a 10-bit A/D converter with up to 13 input channels, and nanoWatt power-management modes for battery-friendly designs. The device operates from 4.2V to 5.5V (PIC18 "J" series is 3.3V core / 5V-tolerant I/O on selected pins per datasheet) and provides 36 digital I/O pins. Architecturally, the PIC18F45J10 uses a Harvard RISC architecture with separate program and data buses and a 16-bit instruction word, achieving one instruction per cycle (4 clocks) at 40MHz. Its vectored interrupt controller, hardware multiplier (8x8 single-cycle), and on-chip ICD (in-circuit debugger) support shorten development cycles. Power-managed Run, Idle, and Sleep modes with on-the-fly oscillator switching suit mixed-performance / low-power products. Typical applications include consumer appliance control panels, low-cost sensor hubs, USB-to-UART bridges (paired with an external USB transceiver), small graphical or segment LCD drivers, automotive body modules, and industrial sensor interface boards. Two I2C/SPI ports allow simultaneous connection of a sensor array plus an external EEPROM or display. Designers should reserve a clean analog AVDD/AVSS pair for the A/D converter, place a 0.1uF decoupling cap on every VDD pin within 5mm, and tie MCLR through a 10k pull-up to VDD. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

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PIC18F45J10T-I/ML - 8-Bit 40MHz 32KB Flash MCU | Microchip
PIC18F45J10T-I/ML

PIC18F45J10T-I/ML - 8-Bit 40MHz 32KB Flash MCU | Microchip

The Microchip Technology PIC18F45J10T-I/ML is an 8-bit PIC18J-family RISC microcontroller running up to 40 MHz at 3.3 V, with 32 KB Flash program memory and 1024 bytes of SRAM, housed in a 44-pin QFN (8x8 mm) package with an exposed thermal pad. The PIC18F45J10T-I/ML integrates an enhanced USART with LIN master/slave hardware, two MSSP (I2C/SPI) peripherals with address masking for I2C, a 10-bit ADC, and nanoWatt power management. Operating voltage is 2.0 V-3.6 V across the -40 C to +85 C industrial range. The wide 2.0 V-3.6 V supply range plus deep-sleep nanoWatt modes suit battery-powered and energy-harvesting designs. This tape-and-reel variant ships in the same 44-QFN (ML) footprint as the tray version (PIC18F45J10-I/ML), enabling assembly-line flexibility. The PIC18J family is a low-cost, high-performance PIC18 branch positioned between classic PIC18F and PIC18K devices. A PIC microcontroller is an 8-bit RISC single-chip computer integrating CPU core, Flash, RAM, EEPROM (none on this part), ADC, timers, and serial peripherals; the PIC18J subfamily adds the high-performance 16-bit instruction word with 8-bit data path and nanoWatt power-saving modes. Microcontrollers (MCUs) sit hierarchically under microcomputer -> embedded processor -> semiconductor IC. The PIC18F45J10T-I/ML differs from sibling PIC18F46J50 devices by Flash density (32 KB vs 64 KB) and the absence of full-speed USB, and from PIC18F45K22 by core (J vs K-series). Typical applications include consumer appliance control panels, sensor signal conditioning nodes, low-cost motor-control front ends, and LIN-attached automotive body modules (non-AEC-Q100). When migrating firmware from PIC18F452 to PIC18F45J10T-I/ML, note the 2.0 V-3.6 V supply restriction versus the legacy 5 V PIC18F452, and verify that the 32 KB Flash/1 KB RAM envelope fits the new code. The 44-QFN (8x8) pad layout simplifies layout review vs TQFP variants.

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PIC18F45J11-I/ML - 8-bit 48MHz 32KB Flash MCU | Microchip
PIC18F45J11-I/ML

PIC18F45J11-I/ML - 8-bit 48MHz 32KB Flash MCU | Microchip

The Microchip Technology PIC18F45J11-I/ML is a low-power, high-performance 8-bit PIC18J-series microcontroller with 32KB of Flash program memory, 48MHz CPU clock (12 MIPS), and a 44-pin QFN (8x8) package qualified to the industrial -40C to +85C operating range. An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory (Flash), data memory (RAM), and peripherals onto one silicon die. Within the embedded hierarchy, an MCU sits between a microprocessor (which requires external memory and peripherals) and a system-on-chip (which integrates radios and high-speed analog). The PIC18 family uses a RISC Harvard architecture with separate program and data buses, enabling one instruction per clock cycle. PIC18J-series devices specifically add Peripheral Pin Select (PPS), nanoWatt XLP power management, and a wide 2.0V-3.6V core supply from a 2.7V-3.6V single rail (J11 family), or the 4.2V-5.5V variant used here. Key features include 32KB (16K x 16) Flash, 3.8KB RAM, 1KB EEPROM, 36 digital I/O pins with PPS remapping, a 12-bit ADC with up to 13 channels, two analog comparators, two CCP/ECCP modules, two MSSP (SPI/I2C) ports, two enhanced USART, and a full-speed USB 2.0 device controller with on-chip transceiver. The nanoWatt XLP technology adds deep-sleep modes drawing under 100 nA, making the part suitable for battery-powered applications. Architecturally, the PIC18F45J11 uses a 16-bit instruction word with an 8-bit data path, a 31-level hardware stack, and an instruction cycle of 4 clock periods. The integrated 5V-to-3.3V LDO inside the package powers the core from a single 5V rail, eliminating external regulators in 5V systems. The 44-pin QFN (8x8 mm) package offers an exposed thermal pad for low thermal resistance. Typical applications include USB peripherals (HID, CDC, custom classes), industrial sensor interfaces with 12-bit ADC, low-power battery sensor nodes with nanoWatt XLP, automotive body controllers, home automation bridges, and consumer HMI panels. Designers choose this part when they need USB device connectivity plus rich analog peripherals in a compact surface-mount footprint. When designing with this MCU, observe the 4.2V-5.5V supply window and ensure VUSB 3.3V is provided by the internal regulator (or bypassed if USB is unused). Decouple VCAP with a 10uF ceramic to the exposed pad (EP), and route the 48MHz clock trace as a short, guarded differential pair when using an external crystal. PPS mapping must be configured in firmware before the alternate peripheral can drive the pin. This page synthesizes distributor pricing, drop-in alternatives, parametric comparisons, and practical design notes not found in the manufacturer datasheet alone, giving engineers a single-decision-tree view of the PIC18F45J11-I/ML.

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PIC18F45J11-I/PT - 32KB Flash 8-bit MCU 48MHz TQFP-44 | Microchip
PIC18F45J11-I/PT

PIC18F45J11-I/PT - 32KB Flash 8-bit MCU 48MHz TQFP-44 | Microchip

The Microchip Technology PIC18F45J11-I/PT is an 8-bit PIC18J-series microcontroller featuring 32KB Flash program memory, 4KB RAM, 48MHz (12 MIPS) operation, and nanoWatt XLP extreme-low-power technology, housed in a 44-pin TQFP (10x10mm) package. It belongs to the PIC18 J-series of enhanced Flash microcontrollers with 12-bit A/D conversion, providing cost-sensitive embedded designs with low power and high performance in a small footprint. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, memory (Flash, RAM, EEPROM), and programmable peripherals. The PIC18 family uses a RISC (Reduced Instruction Set Computer) Harvard architecture: separate program and data buses allow simultaneous fetch and execution, while the PIC18J subset operates from a 2.0-3.6V range with internal regulator for low-power designs. The '45J' member sits in the mid-density Flash tier, balancing code space, RAM, and I/O count for connected-sensor and human-interface applications. Key features of the PIC18F45J11-I/PT include 32KB (16K x 16) Flash program memory, 4KB SRAM data memory, 1KB EEPROM, a 10-bit ADC with up to 13 channels, two analog comparators, two 8-bit timers and three 16-bit timers, two MSSP (SPI/I2C) modules, two Enhanced USART modules, and Peripheral Pin Select (PPS) for flexible signal routing. The deep-sleep current can fall into the nanoamp range using the RTCC and an internal low-power RC oscillator. Architecture-wise the device employs an enhanced PIC18 core with hardware multiplier, 8x8 hardware multiply and a 16-bit-wide instruction path, enabling 12 MIPS at 48MHz. Internal voltage regulation allows single-supply 2.0-3.6V operation while supporting 5V-tolerant digital inputs on most I/O. The 12-bit ADC achieves up to 1 Msps in successive-approximation mode and integrates a bandgap reference for ratiometric measurements. Typical applications include USB/HID peripherals, sensor hubs, industrial control panels, low-power remote controls, smart thermostats, and battery-powered data loggers. The 36 available I/O lines suit parallel LCDs, keypads, and multi-channel analog front ends, while the two USART and two MSSP peripherals enable bridging to RS-232, RS-485, SPI sensors, and I2C EEPROMs. Designers should budget decoupling capacitance close to VDD/AVDD pins and provide a low-ESR bulk cap on VCAP. Use the PPS mapping registers to reassign digital peripherals, but note that analog functions are not selectable. For USB-less designs that need USB later, consider PIC18F45J50 (with on-chip USB) as a drop-in migration path.

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PIC18F45J11T-I/ML - 8-bit 48MHz 32KB Flash MCU QFN-44 | Microchip
PIC18F45J11T-I/ML

PIC18F45J11T-I/ML - 8-bit 48MHz 32KB Flash MCU QFN-44 | Microchip

The Microchip Technology PIC18F45J11T-I/ML is an 8-bit PIC18 J-series flash microcontroller integrating 32 KB of program Flash, 3.8 KB of RAM, and a 12-bit A/D converter in a 44-pin QFN (8x8 mm) package with exposed pad. It executes instructions at 48 MHz (12 MIPS), operates from 2.0V to 3.6V, and supports 36 digital I/O pins, two analog comparators, two UART, two SPI, two I2C, and a full-speed USB 2.0 device transceiver. What is a PIC18 J-series microcontroller? The PIC18 J-series is Microchip's high-performance 8-bit MCU family built on an enhanced Harvard RISC architecture with a 16-bit instruction word. It belongs to the broader microcontroller -> embedded controller -> semiconductor device taxonomy and is differentiated from K-series parts by its 2.0-3.6V core-only supply architecture (no internal 5V regulator), which lowers active current but requires a clean 3.3V rail. The 'J' family adds nanoWatt XLP power management, Peripheral Pin Select (PPS) for flexible signal routing, and a true 12-bit ADC rather than the 10-bit ADC found on F-series predecessors. Key features include 32 KB self-programmable Flash with configurable write protection, 1 KB of dedicated EEPROM emulation area in Flash, a 12-bit A/D converter with up to 13 input channels and 100 ksps conversion rate, two 8-bit timers plus three 16-bit timers, a hardware Real-Time Clock/Calendar (RTCC) with its own low-power oscillator, and an integrated full-speed USB 2.0 device controller that eliminates the need for an external PHY. Architecturally, the device uses a single 2.0-3.6V supply and a 16 MHz internal oscillator (4x PLL to 48 MHz), enabling system cost reduction by removing the external crystal in many designs. The nanoWatt XLP technology provides multiple low-power modes including Deep Sleep with currents as low as 20 nA typical, Run, Idle, and Sleep modes with selective peripheral clock gating, making the device well suited for battery-powered or energy-harvesting designs. Typical applications include USB peripherals (HID, CDC, custom class), industrial sensor nodes, low-power data loggers, motor control signal conditioning, home appliance user interfaces, and point-of-sale terminals. The integrated USB peripheral significantly reduces BOM cost for HID-class devices such as keyboards, mice, and custom USB input gadgets. When designing with this device, note that the core runs from 2.0-3.6V directly - there is no internal 5V-to-3.3V LDO. Systems that previously used a 5V PIC18F part must add a 3.3V regulator. The exposed thermal pad on the QFN package must be soldered to the PCB ground plane for thermal dissipation and electrical performance; failure to solder the EP can cause erratic operation at high clock speeds. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the standalone manufacturer datasheet.

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PIC18F45J50T-I/ML - 48MHz USB MCU 32KB Flash 44-QFN | Microchip
PIC18F45J50T-I/ML

PIC18F45J50T-I/ML - 48MHz USB MCU 32KB Flash 44-QFN | Microchip

The Microchip Technology PIC18F45J50T-I/ML is an 8-bit PIC18 XLP microcontroller with integrated full-speed USB 2.0, 32KB of Flash program memory and 4KB of RAM, housed in a 44-pin QFN (8x8 mm) package with exposed thermal pad. It operates at up to 48 MHz from a 2.0V to 3.6V supply and combines the PIC18 instruction set with nanoWatt XLP power management for low-power designs. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash/ROM), working memory (RAM), and peripheral interfaces (UART, I/O, ADC, USB). It belongs to the broader class of embedded processors, sitting below microprocessors (which require external memory) but above simple state machines. The PIC18F45J50 specifically uses the enhanced PIC18 Harvard architecture with a 16-bit program word and 8-bit data path, optimized for deterministic real-time control. Key features of this part include a full-speed USB 2.0 device/host/OTG transceiver on-chip, 36 digital I/O pins, a 10-bit ADC with up to 13 input channels, two analog comparators, two UART/USART ports, two MSSP (SPI/I2C) modules, and nanoWatt XLP deep-sleep current as low as 13 nA typical. The 44-QFN exposed-pad package provides excellent thermal performance in a compact 8x8 mm footprint. Typical applications include USB peripherals (HID, CDC, MSD, audio class), industrial sensor hubs, low-power data loggers, and consumer devices requiring USB connectivity without an external transceiver. The integrated USB PHY saves BOM cost and PCB area compared to MCUs that need an external USB interface chip. When designing with this device, pay attention to the 3.3V-only operation: the PIC18F45J50 family requires VDD between 2.0V and 3.6V, which means most 5V systems need a level shifter or a separate 3.3V rail. The exposed pad (EP) must be soldered to the ground plane for proper thermal dissipation and electrical performance. This page synthesizes distributor pricing, drop-in alternative MPNs, and engineering design notes not found in the manufacturer datasheet, helping procurement and embedded engineers make a confident part selection.

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PIC18F45J50T-I/PT - 48MHz USB 8-bit MCU 32KB Flash | Microchip
PIC18F45J50T-I/PT

PIC18F45J50T-I/PT - 48MHz USB 8-bit MCU 32KB Flash | Microchip

The Microchip Technology PIC18F45J50T-I/PT is an 8-bit PIC18J-series microcontroller with integrated full-speed USB 2.0, 32KB of Flash program memory, and 4KB of RAM, housed in a 44-pin TQFP (10x10 mm) package. Operating up to 48 MHz from a 2.0-3.6V supply, it belongs to the PIC XLP (eXtreme Low Power) family and delivers 10 MIPS performance with on-chip peripherals including a 12-bit A/D converter, two analog comparators, two UARTs, two SPI/I2C ports, and the charge time measurement unit (CTMU) for capacitive touch sensing. A microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory, RAM, and peripheral interfaces into one package. In the broader hierarchy, this part is a member of the 8-bit microcontroller class, which sits below 32-bit ARM Cortex-M devices but above simple logic ICs in computational capability. 8-bit MCUs remain preferred for cost-sensitive, low-power, and USB-connected embedded designs where the silicon area and BOM cost of a 32-bit part are not required. Key features of the PIC18F45J50T-I/PT include deep-sleep nanoWatt XLP technology drawing sub-1uA quiescent current, peripheral pin select (PPS) for flexible I/O mapping, 36 digital I/O pins, an integrated USB 2.0 full-speed transceiver with on-chip voltage regulator, and 256 bytes of EEPROM data memory. The 32KB self-programmable Flash supports in-application programming via USB or ICSP, eliminating external bootloaders. The device uses a modified Harvard RISC architecture with a 16-bit instruction word and 8-bit data path, executed from a single-cycle pipeline. The CTMU allows touch buttons, sliders, and proximity sensing with no external components beyond the sensor electrodes, and the integrated USB PHY eliminates the need for external transceivers, making the part attractive for HID peripherals, instrumentation, and industrial control nodes. Typical applications include USB HID devices such as keyboards and mice, USB-to-UART bridges, capacitive touch user interfaces, low-power sensor nodes, and small industrial control boards. The wide operating range and robust peripheral set also suit portable medical accessories, point-of-sale terminals, and educational platforms. When designing with this part, ensure the USB D+/D- traces are routed as a 90-ohm differential pair and that VUSB decoupling complies with the USB 2.0 specification. The internal voltage regulator requires a single bulk capacitor on VDD; consult the datasheet for the exact capacitance value. This page synthesizes distributor pricing, drop-in alternative MPNs, and practical design notes not found in the manufacturer datasheet, providing engineers a faster path from selection to prototype.

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PIC18F45K20-I/ML - 8-bit 64MHz MCU 32KB Flash 44-QFN | Microchip
PIC18F45K20-I/ML

PIC18F45K20-I/ML - 8-bit 64MHz MCU 32KB Flash 44-QFN | Microchip

The Microchip Technology PIC18F45K20-I/ML is an 8-bit PIC18 microcontroller with nanoWatt XLP technology, 32KB of Flash program memory (16K x 16 words), 1536 bytes of RAM, and a 256-byte EEPROM, housed in a 44-pin QFN (8x8 mm) package with exposed thermal pad. It executes instructions at up to 64 MHz (16 MIPS) from an internal oscillator block with PLL, and integrates a 14-channel 10-bit ADC, two analog comparators with rail-to-rail inputs, two CCP modules, an enhanced USART, MSSP (SPI/I2C), and a 25 mA/25 mA sink/source capable I/O structure across 36 user I/O pins. The -I/ML suffix indicates the industrial temperature grade (-40C to +85C) and the QFN (ML) surface-mount package. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program and data memory, peripherals, and I/O. The PIC18 family uses an enhanced 8-bit RISC Harvard architecture with hardware multiplier and 16-bit wide instructions, sitting between 16-bit PIC24 parts and 8-bit PIC16/12 parts in the Microchip portfolio. XLP (nanoWatt eXtreme Low Power) is Microchip's branding for ultra-low sleep current (<100 nA typical) suitable for battery-powered edge devices. The K-series in particular targets migration from legacy PIC18F4xK20 designs by offering more memory and analog channels. Key specifications include 1.8-3.6V core operation with 4.2-5.5V extended Vdd range (with internal 1.2V FVR reference), 32 KB self-programmable Flash, 1.5 KB SRAM, 256 B EEPROM, 36 digital I/O, and four timer modules. The 10-bit ADC supports 14 channels with auto-acquisition and is operable during Sleep for low-power sensing. Two analog comparators with independent input multiplexing and programmable reference enable mixed-voltage designs without external op-amps. The device uses a high-performance 8-bit RISC core with a hardware multiply and a 16-level hardware stack. Internal PLL multiplies the 16 MHz HFINTOSC up to 64 MHz, eliminating external crystals in cost-sensitive designs. The 1.2V fixed voltage reference (FVR) channel provides a stable on-chip reference for the ADC and comparators, while charge time measurement unit (CTMU) support enables capacitive touch and time-of-flight measurement. Typical applications include low-power remote sensor nodes, HVAC and thermostat controllers, consumer white goods, battery chargers, USB-to-UART bridges (combined with external PHY), home automation gateways, and small industrial control boards where sleep current, on-chip analog, and 5V tolerance are critical. The 25 mA sink/source also supports direct LED driving without external transistors. When designing with this MCU, observe Vdd/Vss decoupling guidance (100 nF + bulk), and review errata for any silicon revisions in the JEDEC-qualified QFN-44 footprint. For new designs, consider PIC18F45K22 for additional memory and peripherals, or PIC18F46K20 for 64 KB Flash in the same package. This page synthesizes distributor pricing, parametric drop-in alternatives, and practical design notes that go beyond what the manufacturer datasheet alone provides.

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PIC18F45K20-I/P - 8-Bit 64MHz 32KB Flash XLP MCU | Microchip
PIC18F45K20-I/P

PIC18F45K20-I/P - 8-Bit 64MHz 32KB Flash XLP MCU | Microchip

The Microchip Technology PIC18F45K20-I/P is an 8-bit PIC18 enhanced RISC microcontroller running at up to 64 MHz, integrating 32 KB of Flash program memory, 1536 bytes of SRAM and 256 bytes of EEPROM in a 40-pin PDIP through-hole package. It delivers 36 general-purpose digital I/O lines, fourteen 10-bit ADC channels, two analog comparators, two PWM modules, three timers, two capture/compare modules, and a full suite of serial interfaces including EUSART, MSSP (I2C/SPI) and a parallel slave port. An 8-bit microcontroller (MCU) is a single-chip processor that combines a CPU, non-volatile program memory (typically Flash), volatile data memory (RAM), small EEPROM/FRAM, and a rich set of peripherals on one die. PIC18F-family parts sit between Microchip's PIC16 baseline and the PIC24/dsPIC 16-bit families, balancing code density, low power (the XLP nanoWatt feature family) and rich peripheral integration. The PIC18F45K20 specifically belongs to the "K20" sub-family that emphasizes extreme-low-power (XLP) operation, wider voltage tolerance (1.8 V - 3.6 V for the LF variants, up to 5.5 V for the F version) and nanoWatt sleep modes with sub-microamp standby currents. Key features include 64 MHz operation from a 16 MIPS instruction pipeline, hardware multiplier, C-optimized 16-bit instruction word architecture, an enhanced addressable USART, self-programming Flash, in-circuit debug (ICD) and 10-bit ADC with up to 14 channels. According to the manufacturer datasheet, the device includes nanoWatt XLP technology with typical sleep currents below 50 nA in real-time-clock mode, making it well suited to battery-powered sensor nodes. Typical applications include industrial control panels, low-power sensor hubs, USB-less HID peripherals, automotive body electronics, white-goods motor control, and education/hobby platforms. The 40-pin PDIP is breadboard-friendly, lowering the barrier for prototyping and repair-friendly production runs where through-hole replacement matters. When designing with this part, verify that the Vdd rail falls within 1.8 V to 3.6 V for the F-version and that decoupling capacitors (100 nF plus bulk) are placed within 5 mm of the supply pins. Program via ICSP using PGD/PGC, leaving adequate guard traces around the high-impedance analog inputs to avoid ADC noise pickup.

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PIC18F45K20-I/PT - 8-bit 64MHz XLP MCU, 32KB Flash, 44-TQFP
PIC18F45K20-I/PT

PIC18F45K20-I/PT - 8-bit 64MHz XLP MCU, 32KB Flash, 44-TQFP

The Microchip PIC18F45K20-I/PT is an 8-bit PIC18 microcontroller with 64 MHz operation, 32 KB Flash program memory, and 1536 bytes of SRAM, housed in a 44-pin TQFP (10x10 mm) package. It belongs to Microchip's nanoWatt XLP (eXtreme Low-Power) family, providing sleep currents below 100 nA and active currents of a few mA at full speed, making it well-suited to battery-powered and energy-harvesting applications. What is a microcontroller? A microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory (Flash), working memory (RAM), and a range of peripherals - timers, ADC, communication ports, and I/O - onto one die. The PIC18F family specifically uses a RISC Harvard-architecture core with 16-bit instructions and 8-bit data paths, favored for deterministic interrupt response in industrial control. Within Microchip's portfolio, the PIC18F45K20 sits at the intersection of the 8-bit 'F' series and the nanoWatt XLP technology node, positioned above the PIC16F and below the dsPIC33 line. Key features include 64 MHz maximum clock from an internal 16 MHz oscillator or external crystal, 36 digital I/O pins, a 10-bit ADC with up to 14 channels, two analog comparators, two CCP/ECCP modules, two EUSART, MSSP (SPI/I2C), and a wide operating voltage range from 1.8 V to 5.5 V. The device also supports self-programmability and an on-chip 16-level hardware stack. Typical applications include low-power sensor nodes, USB-to-UART bridges using the EUSART, white-goods control boards, industrial meters, LED lighting controllers, and consumer devices requiring long battery life. The wide voltage range supports direct operation from lithium-thionyl-chloride (3.6 V) primary cells used in utility metering. When designing with this part, choose MPLAB X IDE with XC8 compiler and PICkit 3/4 for in-circuit debug. For lowest sleep power, switch off the ADC and disable unused peripherals via the PMD registers and use the RTCC with an external 32.768 kHz crystal for timekeeping. This page consolidates datasheet specs, drop-in compatible variants, distributor pricing, and engineering notes not assembled in any single manufacturer document.

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PIC18F45K22-E/ML - 32KB Flash 8-Bit MCU 48MHz QFN-44 | Microchip
PIC18F45K22-E/ML

PIC18F45K22-E/ML - 32KB Flash 8-Bit MCU 48MHz QFN-44 | Microchip

The Microchip Technology PIC18F45K22-E/ML is a high-performance 8-bit PIC18 microcontroller built on the nanoWatt XLP (eXtreme Low Power) platform, integrating 32 KB of Flash program memory and 1.5 KB of SRAM in a 44-pin QFN (8x8 mm) package with exposed thermal pad. It runs at up to 48 MHz (12 MIPS instruction throughput), supports a wide 2.3 V to 5.5 V supply voltage range with automotive-grade 4.2 V to 5.5 V operation on this -E variant, and provides 36 digital I/O pins with nanoWatt sleep currents typically below 50 nA. A microcontroller (MCU) is a single-chip computer containing a CPU core, non-volatile program memory (Flash), volatile data memory (SRAM), and configurable peripherals. The PIC18F family sits in the broader 8-bit MCU hierarchy as an enhanced mid-range architecture with a 16-bit instruction word, C-optimized compiler support, and advanced peripherals; it belongs to the larger class of microcontrollers within the power management & embedded control semiconductor category. XLP nanoWatt technology specifically targets ultra-low sleep current, making this family well suited to battery-powered products. Key differentiating features include a 12-bit A/D converter with up to 30 input channels, two analog comparators with selectable references, three ECCP/SCCP PWM/capture modules, two MSSP peripherals for SPI/I2C, two enhanced USART modules, and an on-chip mTouch capacitive sensing module. The integrated CTMU provides accurate time measurement for capacitive touch and general purpose analog functions, and the EUSART auto-baud detection simplifies LIN-connected designs. The PIC18F45K22 uses an enhanced Harvard RISC architecture with hardware multiply, 31-level hardware stack, and 1,000,000 erase/write cycle Flash endurance. Internal oscillator options (8 selectable frequencies from 31 kHz to 16 MHz) plus PLL allow flexible clocking without external crystals, reducing BOM cost and board area. The device also features an on-chip voltage regulator allowing direct 5 V operation from a single supply. Typical applications include consumer white goods and HVAC controls, low-power battery-operated sensor nodes, IoT edge nodes, automotive body and interior electronics (with PIC18F45K22-I/ML or automotive-grade derivatives for full AEC-Q100 deployments), industrial automation human-machine interfaces (HMIs), capacitive touch user interfaces, and USB-to-UART bridges via the EUSART. The wide supply range makes it drop-in friendly on both 3.3 V and 5 V rails. Designers should note that the QFN-44 (8x8 mm) exposed pad must be soldered to the PCB ground plane to meet thermal and electrical performance; do not leave the EP floating. For new designs Microchip recommends the newer PIC18F45Q10 family, which offers updated peripherals and improved current consumption, but the PIC18F45K22-E/ML remains fully active and broadly stocked for legacy designs. This page synthesizes current distributor pricing and stock, drop-in alternatives in the same QFN-44 package, and practical design notes drawn from the manufacturer datasheet - engineering context not found in the datasheet alone.

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PIC18F45K22-E/MV - 8-bit 48MHz MCU 32KB Flash | Microchip
PIC18F45K22-E/MV

PIC18F45K22-E/MV - 8-bit 48MHz MCU 32KB Flash | Microchip

The Microchip Technology PIC18F45K22-E/MV is an 8-bit PIC18 RISC microcontroller delivering 48 MHz of CPU performance from 32 KB of on-chip Flash program memory and 1536 bytes of RAM, housed in a 40-pin UQFN (MV) 5x5 mm package. It combines the legacy PIC18 instruction set with nanoWatt XLP extreme-low-power technology, providing sleep currents in the nanoamp range and a flexible peripheral mix that includes seven timers, four PWM modules, two analog comparators, and up to 28 channels of 10-bit ADC. A microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory, working RAM, and a set of digital and analog peripherals. PIC microcontrollers from Microchip sit in the broader hierarchy: MCU -> 8-bit microcontroller -> embedded controller -> semiconductor. The PIC18F45K22 family uses a 16-bit-wide modified Harvard Flash architecture that allows most instructions to execute in a single cycle, balancing deterministic real-time behavior with the C-friendly PIC18 instruction set. Key specifications include an internal oscillator block with ±1% typical accuracy (factory calibrated), a wide 2.3 V to 5.5 V operating range that simplifies battery and USB-powered designs, and rich connectivity through EUSART, MSSP (SPI / I2C), and an enhanced capture/compare/PWM module. The 28-channel 10-bit ADC enables direct interface with sensors, while two analog comparators support power-conversion and signal-conditioning loops without external components. Typical applications include low-power battery-powered sensor nodes, USB human-interface devices, small home appliances with capacitive touch via the mTouch sensing unit, industrial control panels, and automotive body modules. The combination of XLP nanoWatt sleep, Peripheral Pin Select, and on-chip EEPROM makes the PIC18F45K22 family especially attractive for designs migrating from legacy 28-pin PIC16/18 parts to higher pin counts with the same toolchain. The newer PIC18F45Q10 from Microchip is the recommended migration path for new designs. When designing with this device, ensure decoupling of VDD/VSS pairs (0.1 uF plus bulk), respect the ICSP programming pin assignments (PGC/PGD/RESET), and reserve the MCLR pin with the standard 10 kohm pull-up. Use the Peripheral Pin Select feature to remap digital peripherals, but always verify the PPS lock register state before production.

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PIC18F45K22-E/P - 8-bit MCU, 32KB Flash, 40MHz, PDIP-40 | Microchip
PIC18F45K22-E/P

PIC18F45K22-E/P - 8-bit MCU, 32KB Flash, 40MHz, PDIP-40 | Microchip

The Microchip Technology PIC18F45K22-E/P is an 8-bit PIC18 microcontroller featuring 32KB of Flash program memory, 1536 bytes of SRAM, and a 40-pin PDIP (Plastic Dual In-line Package) footprint. The device operates from a 4.2V to 5.5V supply and integrates a 12-bit A/D converter with nanoWatt XLP (eXtreme Low Power) technology, targeting low-power embedded applications. According to the verified distributor data, this part supports up to 40 MHz clock speed and exposes 36 I/O ports across the 40-pin DIP package. A PIC18 microcontroller is a member of Microchip's 8-bit enhanced Harvard-architecture MCU family, sitting between PIC16 (baseline/mid-range) and PIC24/dsPIC (16-bit) families. Within the broader taxonomy, PIC18 belongs to microcontrollers -> integrated circuits -> semiconductors. The 'K' family designation refers to parts with nanoWatt XLP ultra-low-power peripherals including low-power sleep modes (deep sleep, doze, idle), making the PIC18F45K22 a strong fit for battery- or energy-harvesting applications that still require mid-range processing throughput. Key features of the PIC18F45K22-E/P include: 32KB Flash program memory with self-programmability, 256 bytes of EEPROM data memory, 1536 bytes SRAM, two Enhanced USART modules, two MSSP (SPI/I2C) modules, two 10-bit PWM modules with up to 14-bit resolution, and 30 analog input channels via the 12-bit ADC. The 'E' temperature grade suffix indicates the extended industrial temperature range of -40C to +125C, suitable for industrial and automotive under-hood environments. The 'P' package suffix specifies the 40-pin PDIP through-hole package for prototyping, breadboarding, and legacy manufacturing lines. Architecturally, the PIC18F45K22 uses a RISC instruction set with 16-bit instructions and an 8-bit data path, featuring hardware multiplier and 31-level hardware stack. The integrated nanoWatt XLP technology provides sleep currents below 100 nA typical, while active current consumption at 1 MHz is approximately 220 uA/MHz. Typical applications include industrial sensor interfaces, building automation controllers, low-power wireless sensor nodes, HVAC control panels, and battery-powered data loggers. The wide temperature range and XLP technology make it suitable for remote telemetry units and IoT edge devices operating from coin-cell or energy-harvested power sources. Design consideration: when migrating from PDIP to surface-mount QFN/TQFP variants (e.g., PIC18F45K22-E/ML or PIC18F45K22-E/MV), verify peripheral pin-out mapping because QFN/TQFP pin assignments differ from PDIP. The 'E/P' combination specifically denotes extended temperature, PDIP-40 packaging. This page synthesizes distributor pricing, drop-in replacement options, and practical design notes not found in a single manufacturer datasheet, with alternatives sourced from the verified Microchip PIC18F45K22 family and validated cross-references.

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PIC18F45K22-I/ML - 8-Bit XLP MCU 32KB Flash 44-QFN | Microchip
PIC18F45K22-I/ML

PIC18F45K22-I/ML - 8-Bit XLP MCU 32KB Flash 44-QFN | Microchip

The Microchip Technology PIC18F45K22-I/ML is an 8-bit PIC18 family microcontroller featuring 32 KB Flash, 1536 B RAM, and a 64 MHz internal oscillator in a 44-pin QFN (8x8 mm) package with nanoWatt XLP extreme low-power technology. Key features include 32 KB (16K x 16) Flash program memory, 1536 B RAM, 256 B EEPROM, 36 I/O pins, 30 channels of 12-bit ADC, two rail-to-rail analog comparators, a programmable on-chip voltage reference (CVREF), and a programmable High/Low Voltage Detection (PLVD) module. The device delivers up to 16 MIPS throughput, supports C compiler optimized architecture, and provides linear program memory addressing to 64 Kbytes with linear data memory addressing to 4 Kbytes. The PIC18F45K22 operates from 2.3V to 5.5V (down to 1.8V with internal regulator disabled), with a 64 MHz max CPU clock and a wide operating temperature range of -40C to +125C (industrial). It integrates nanoWatt XLP technology for ultra-low sleep currents, a Charge Time Measurement Unit (CTMU) for capacitive touch sensing, multiple communication peripherals (EUSART, MSSP/SPI/I2C), and PWM modules. The QFN-44 (ML) 8x8 mm package offers a small PCB footprint suitable for space-constrained designs. A high-performance RISC CPU with C compiler-optimized architecture combines a 200 ns instruction execution cycle with efficient code density. The device supports in-circuit debugging via ICD, self-programming, and an enhanced flash memory controller with 100K endurance cycles. Typical applications include low-power IoT sensor nodes, capacitive touch human-machine interfaces (HMIs), battery-powered consumer electronics, industrial control modules, and automotive body/subsystem controllers (non-safety). The XLP technology enables multi-year battery life in sleep-dominated applications. When designing, ensure decoupling on VDD/AVDD pairs, route the 8 MHz crystal traces short and guard-grounded, and verify the 12-bit ADC reference stability for precision measurements. The newer PIC18F45Q10 is recommended for new designs where extended peripherals or lower power are required. This page synthesizes distributor pricing, drop-in alternatives in the same 44-QFN footprint, and practical design notes not aggregated on the manufacturer product page.

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PIC18F45K22-I/MV - 8-Bit 64MHz 32KB Flash MCU 40-UQFN | Microchip
PIC18F45K22-I/MV

PIC18F45K22-I/MV - 8-Bit 64MHz 32KB Flash MCU 40-UQFN | Microchip

The Microchip Technology PIC18F45K22-I/MV is an 8-bit PIC microcontroller integrating 32KB (16K x 16) of Flash program memory, 1536 bytes of SRAM, and 256 bytes of EEPROM into a 40-pin UQFN (5x5 mm) package with exposed thermal pad. It executes instructions at up to 64 MHz (16 MIPS) and operates from 2.5 V/3.3 V/5 V rails, with nanoWatt XLP technology driving sleep-mode quiescent current down to roughly 100 nA. AEC-Q100 qualification on the /MV suffix makes this variant suitable for automotive in-cabin and chassis modules requiring extended reliability. A microcontroller (MCU) is a single-chip computer containing a processor core, program memory, working RAM, and configurable peripherals on one die. 8-bit PIC MCUs sit in the broader taxonomy microcontroller -> embedded processor -> semiconductor device, and within Microchip's portfolio they form the PIC18 family aimed at low-power mixed-signal control. The PIC18F45K22 is positioned in the upper end of the nanoWatt XLP family, balancing computational throughput with extreme sleep-mode efficiency for battery-powered designs. Key differentiating features include XLP sleep currents as low as 100 nA, an integrated 16-level hardware multiplier, an on-chip 32 kHz oscillator for RTCC without external crystals, and a configurable charge time measurement unit (CTMU) that supports capacitive touch sensing and precise time-of-flight measurements. The 12-bit A/D converter supports up to 28 channels at the 40-pin package, enabling direct interface with multi-sensor analog front-ends without external multiplexing. Architecturally the core uses a 16-bit instruction word with an 8-bit data path and a modified Harvard bus, executing most instructions in a single cycle at 16 MIPS. Wide peripheral integration - including an enhanced PWM with dead-band control, auto-shutdown, and programmable dead time - reduces external component count for motor control and power conversion designs. Code protection via standard PIC configuration bits plus ICSP (In-Circuit Serial Programming) supports secure firmware update in the field. Typical applications span industrial sensor hubs, automotive body and chassis modules, low-power remote controls, battery chargers, smart metering, capacitive touch keypads, and small home appliances. The wide voltage range and AEC-Q100 grading also suit off-road vehicles and portable medical accessories. Designers frequently pair it with Microchip's MCP1700 LDO for supply regulation and MRF24J40 transceivers for sub-GHz wireless links. When designing with this part, place the exposed pad (EP) on the UQFN package directly onto a sufficiently large copper pour (at least 25 mm^2 of continuous plane area), and follow the recommended 4-layer stack-up with a solid ground plane beneath the device. Program the BOR (brown-out reset) threshold to match the regulated rail to prevent code corruption during power-down events. This page synthesizes distributor pricing, pin-compatible drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

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PIC18F45K22-I/P - 8-Bit 64MHz MCU 32KB Flash 40-PDIP | Microchip
PIC18F45K22-I/P

PIC18F45K22-I/P - 8-Bit 64MHz MCU 32KB Flash 40-PDIP | Microchip

The Microchip Technology PIC18F45K22-I/P is a low-power, high-performance 8-bit PIC18 microcontroller built on the nanoWatt XLP technology platform, delivering 64 MHz of CPU performance with 32 KB (16K x 16) of Flash program memory in a 40-pin PDIP through-hole package. It features 1536 bytes of SRAM, 256 bytes of EEPROM, and 36 general-purpose I/O pins arranged across multiple analog and digital peripherals. The device operates from 4.2 V to 5.5 V supply and includes an integrated 12-bit A/D converter with up to 28 channels for mixed-signal acquisition. According to the Microchip product family datasheet, the PIC18F45K22 is one of three pin-count variants in the family (28/40/44-pin) sharing a common core, allowing code and tool reuse across the PIC18F26K22 / PIC18F46K22 / PIC18F45K22 / PIC18F44K22 / PIC18F43K22 product family. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, RAM, non-volatile program memory, and peripherals onto one piece of silicon. PIC microcontrollers use a modified Harvard architecture with separate program and data buses, executed from Flash memory and SRAM respectively. The PIC18 family sits at the top of Microchip's 8-bit portfolio, offering the highest code density and richest peripheral set within the 8-bit line, and is widely used where deterministic real-time response and low sleep current are required. Key features of the PIC18F45K22 include eXtreme Low-Power (XLP) nanoWatt sleep modes with currents in the nanoamp range, multiple serial interfaces (UART, SPI, I2C), Enhanced Capture/Compare/PWM (ECCP) modules, comparators, and a 12-bit ADC. The 64 MHz internal oscillator eliminates an external crystal in many designs, and the 40-pin PDIP package supports breadboard and through-hole prototyping, making the part popular in industrial control, instrumentation, and educational applications. The architecture combines an 8-bit data path with a 16-bit instruction word, providing orthogonal addressing and a hardware multiplier that accelerates arithmetic. The 12-bit ADC with acquisition timer and automatic channel scanning enables precision sensor interfacing, while the PWM modules support motor control and power-conversion loops. Internal EEPROM supports non-volatile data storage without external memory chips. Typical applications include industrial sensor interfaces, low-power remote sensor nodes, HVAC and building-control nodes, motor-control front-ends, USB HID peripherals (paired with a USB transceiver), and educational development platforms. The wide 4.2-5.5 V supply range is well-matched to 5 V industrial buses and battery-backed systems. When designing with this part, choose the appropriate oscillator mode for your EMI and accuracy budget; internal 16 MHz or 64 MHz operation removes a crystal but trades frequency precision. The 40-pin PDIP footprint is identical to the PIC18F452 / PIC18F4550 family, easing migration. Decouple VDD with 100 nF plus 10 uF bulk capacitors and follow Microchip's emulator/debugger pin assignments when using MPLAB tools. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found on the manufacturer datasheet.

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PIC18F45K22-I/PT - 8-Bit 64MHz 32KB Flash MCU | Microchip
PIC18F45K22-I/PT

PIC18F45K22-I/PT - 8-Bit 64MHz 32KB Flash MCU | Microchip

The Microchip Technology PIC18F45K22-I/PT is an 8-bit PIC18 microcontroller from the nanoWatt XLP family, featuring a 64 MHz CPU, 32 KB of Flash program memory, 1536 bytes of SRAM, and 256 bytes of EEPROM in a 44-pin TQFP (10x10 mm) surface-mount package. It integrates a 10-bit ADC, multiple serial communication peripherals, and Microchip's nanoWatt XLP technology for ultra-low-power sleep currents, making it well suited to mixed-signal and battery-aware embedded designs. An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit data path, optimized for deterministic control, low power consumption, and tight peripheral integration. Within the broader semiconductor taxonomy, an MCU is a type of embedded processor; PIC18F devices sit in the mid-range PIC performance tier, above baseline PIC16 parts but below the dsPIC Digital Signal Controller family. They are widely used for sensor interfacing, human-machine interface control, motor drivers, and IoT edge nodes. Key features of the PIC18F45K22-I/PT include a 64 MHz maximum clock with an internal 16 MHz oscillator, an integrated 10-bit ADC, multiple PWM modules, EUSART, MSSP (SPI/I2C), and self-programmable Flash. nanoWatt XLP technology delivers sleep currents as low as 20 nA, enabling multi-year battery life on a single cell. The wide 1.8 V to 5.5 V supply range simplifies designs that must operate from 2x AA, lithium, or regulated 3.3 V rails. Typical applications include industrial sensor hubs, consumer white goods, USB/HID peripherals, automotive body controllers, medical handheld instruments, and battery-powered IoT sensor nodes. The device's deterministic interrupt latency and rich peripheral set make it particularly attractive in real-time control loops. Designers also benefit from a free MPLAB X IDE and the MPLAB Snap or PICkit programmer/debugger ecosystem. When laying out a board, place decoupling capacitors as close as possible to VDD/VSS pairs and reserve a clean ground pour under the exposed thermal pad area to keep ADC measurements stable. This page synthesizes distributor pricing, drop-in same-package alternatives, and engineering design notes that go beyond the manufacturer datasheet alone.

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PIC18F45K22T-I/ML - 32KB Flash 8-bit XLP MCU | Microchip
PIC18F45K22T-I/ML

PIC18F45K22T-I/ML - 32KB Flash 8-bit XLP MCU | Microchip

The Microchip Technology PIC18F45K22T-I/ML is an 8-bit PIC18 microcontroller built on the eXtreme Low-Power (XLP) nanoWatt architecture, delivering 64 MHz of CPU performance with 32 KB of Flash program memory, 1536 B of RAM, and 256 B of EEPROM in a 44-pin QFN (8x8 mm) package. This variant ships on tape and reel (T suffix) and is qualified for the industrial temperature range of -40C to +85C. The device integrates a rich peripheral set including multiple Enhanced USART, MSSP (SPI/I2C), 10/12-bit ADC modules, comparators, PWM, and the standard PIC18 interrupt architecture used across the PIC18F family. An 8-bit PIC microcontroller (MCU) is a compact, deterministic processor built around a Harvard RISC core that executes one byte per instruction cycle, making it ideal for cost-sensitive embedded control. The PIC18F family extends the baseline PIC16 instruction set with 16-bit instructions, linear addressing, C-friendly architecture, and priority interrupts. Within the power-management hierarchy, MCUs sit alongside microprocessors, FPGAs, and DSPs, with XLP technology positioning this part for battery-powered and energy-harvesting applications where nanoamp sleep currents are required. Key features include 32 KB Flash (16K x 16), 1536 B RAM, 256 B EEPROM, 36 digital I/O pins, 28 channels of 10-bit ADC, two analog comparators with selectable reference, four 16-bit timers plus two 8-bit timers, three Enhanced USART modules, two MSSP (SPI/I2C) modules, and an enhanced PWM module with up to 5 channels. The nanoWatt XLP technology delivers a typical sleep current under 100 nA and multiple power-managed operating modes including Idle, Sleep, Deep Sleep, and RTCC with Vbat. From an architecture perspective, the device is based on a modified Harvard core with separate program (Flash) and data (SRAM) buses, enabling simultaneous instruction fetch and operand access. The 16-bit instruction word yields 75 instructions with single-cycle execution (except branches). Internal oscillator blocks include a 16 MHz HFINTOSC and 31 kHz LFINTOSC, selectable to support system clock switching between performance and low-power modes. The In-Circuit Serial Programming (ICSP) and In-Circuit Debugger (ICD) interfaces use two pins plus reset for programming and debugging without external hardware beyond an MPLAB Snap, PICkit, or ICD header. Typical applications include low-power industrial sensor nodes, battery-powered IoT edge devices, home appliance control boards, USB peripherals using the PIC18 USB stack, motor control via the PWM and comparator subsystems, and human-machine interface panels with segmented LCD driving through the integrated charge pump. The wide 1.8 V to 5.5 V VDD range further simplifies designs powered from 2xAA cells, Li-Ion packs, or 5 V regulated rails. When designing with this device, ensure decoupling capacitors of 100 nF and 10 uF are placed within 5 mm of the VDD pins, and that the ICSPDAT/ICSPCLK traces are kept short with 4.7 kohm pull-ups on PGC/PGD as recommended by the manufacturer datasheet. Programming voltage considerations must follow Microchip specification for low-voltage ICSP. The QFN-44 exposed pad must be soldered to the ground plane for thermal and electrical performance. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found on a single manufacturer page or distributor listing, helping engineers select, source, and design with the PIC18F45K22 family.

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PIC18F45K22T-I/PT - 8-bit 64MHz 32KB Flash MCU 44-TQFP | Microchip
PIC18F45K22T-I/PT

PIC18F45K22T-I/PT - 8-bit 64MHz 32KB Flash MCU 44-TQFP | Microchip

The Microchip Technology PIC18F45K22T-I/PT is an 8-bit PIC18 enhanced-flash microcontroller running at up to 64MHz with 32KB (16K x 16) of on-chip Flash program memory and 1536 bytes of RAM, housed in a 44-pin TQFP (10x10 mm) package. According to the manufacturer datasheet, it operates across 2.5V, 3.3V and 5V rails and is qualified to the AEC-Q100 automotive standard, making it suitable for both consumer and in-vehicle designs. An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit data path. PIC18F-series MCUs sit in the hierarchy: PIC18 -> enhanced-flash 8-bit MCU -> microcontroller -> embedded processor -> semiconductor. The 'XLP' nanoWatt technology designation indicates that this part belongs to Microchip's eXtreme Low Power family, designed for battery-powered and energy-harvesting applications where sleep-mode current draw is critical to system run-time. Key features include 256 bytes of EEPROM data memory, up to 36 digital I/O pins, an internal 16MHz oscillator (software-selectable to 64MHz via PLL), a 12-bit ADC with up to 28 input channels, multiple Enhanced USART, MSSP (SPI/I2C) and CCP/ECCP peripherals, and a 5-bit DAC module. The nanoWatt XLP technology keeps typical sleep current below ~100 nA with full RAM retention, allowing the device to wake from a timer, interrupt or watchdog event. The PIC18F45K22 uses an enhanced Harvard RISC architecture with a 16-bit instruction word and 8-bit data path, achieving up to 16 MIPS at 64MHz. Its instruction set is a superset of the base PIC16 instruction set, supporting hardware multiply and a hardware context save/restore on interrupt, which simplifies deterministic real-time response. Typical applications include industrial sensor nodes, automotive body and climate controllers, low-power IoT edge devices, USB-to-UART bridges using the MSSP/USART peripherals, and white-goods/consumer HMI panels that need 12-bit analog sensing without an external ADC. Designers should select a 100nF decoupling capacitor on each VDD pin and place it within 5mm of the pin. The device's wide 2.5-5.5V operating range allows direct Li-ion battery connection without an external regulator, simplifying BOM in cost-sensitive designs. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not found in the manufacturer datasheet, providing engineer-focused context beyond the standard datasheet summary.

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PIC18F45K40-E/ML - 8-Bit 64MHz 32KB Flash MCU QFN-44 | Microchip
PIC18F45K40-E/ML

PIC18F45K40-E/ML - 8-Bit 64MHz 32KB Flash MCU QFN-44 | Microchip

The Microchip Technology PIC18F45K40-E/ML is an 8-bit RISC microcontroller featuring the PIC18 CPU core, 32 KB of Flash program memory, 2 KB of RAM, and 256 bytes of data EEPROM, housed in a 44-pin QFN (ML) package with exposed pad. It operates from 2.3 V to 5.5 V, supports a maximum clock frequency of 64 MHz, and integrates rich analog and digital peripherals including a 10-bit ADC with Computation (ADC2), a 5-bit DAC, comparators, PWM, CCP, CWG, HLT, WWDT, and SCAN/CRC. An 8-bit microcontroller (MCU) is a single-chip computer that combines an 8-bit CPU, program memory (Flash/ROM), data memory (RAM), and peripheral interfaces on one die. PIC18F-series MCUs sit within the broader hierarchy: 8-bit microcontroller -> microcontroller -> embedded controller -> semiconductor. They are characterized by Harvard architecture, deterministic instruction execution, and mature toolchains (MPLAB X IDE, XC8 compiler), making them ideal for cost-sensitive and low-power applications. Key features of the PIC18F45K40-E/ML include Core Independent Peripherals (CIPs) such as the Complementary Waveform Generator (CWG), Windowed Watchdog Timer (WWDT), and Configurable Logic Cell (CLC), which offload tasks from the CPU. The eXtreme Low Power (XLP) technology enables deep sleep currents as low as [DATA_NEEDED] nA, and 5 V tolerance on digital I/O allows direct interface to legacy industrial buses without level shifters. The device uses a modified Harvard architecture with a 16-bit instruction word and an 8-bit data path, delivering up to 16 MIPS at 64 MHz. The 32 KB self-programmable Flash supports in-application programming (IAP) and the 256-byte EEPROM provides byte-level non-volatile storage for user settings such as calibration constants. Typical applications include industrial control (sensor interfacing, motor control with CWG), consumer electronics (HMI with segmented LCD driving), IoT edge nodes, automotive body controllers (with PIC18F45K40-E/ML ext-grade variants), and battery-powered metering. The wide 2.3-5.5 V range supports both 3.3 V and 5 V designs. When designing with this part, pay attention to decoupling: place 100 nF ceramic capacitors adjacent to every VDD/VSS pair, and add a 10 µF bulk capacitor near the IC. The exposed thermal pad on the QFN-44 package must be soldered to a ground copper pour to meet thermal and electrical specifications. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone, providing engineers with consolidated selection guidance.

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PIC18F45K40-E/MV - 32KB Flash 8-bit MCU, 40-UQFN | Microchip
PIC18F45K40-E/MV

PIC18F45K40-E/MV - 32KB Flash 8-bit MCU, 40-UQFN | Microchip

The Microchip Technology PIC18F45K40-E/MV is an 8-bit PIC18 XLP microcontroller delivering 64 MHz CPU performance, 32 KB Flash program memory, 2 KB RAM, and 256 B EEPROM in a 40-pin UQFN (5x5 mm) package. The device integrates a 10-bit ADC2, 5-bit DAC, comparators, CCP, PWM, CWG, WWDT, and SCAN/CRC peripherals on a single die, suited to general-purpose 5V and low-power embedded designs. What is a PIC18F Microcontroller? A PIC18F is an 8-bit Harvard-architecture CMOS microcontroller from Microchip's enhanced mid-range family, featuring a RISC core with 16-bit instructions and 8-bit data path. PIC18F devices occupy the LDO -> linear regulator product hierarchy analogue within the MCU taxonomy: 8-bit MCU -> microcontroller -> embedded controller -> semiconductor. They are designed for deterministic real-time control, low power consumption, and ease of programming via MPLAB X IDE. Key features include eXtreme Low Power (XLP) technology with deep-sleep currents typically below 1 µA, 36 digital I/O pins with Peripheral Pin Select (PPS), four 16-bit timers, two I2C/SPI ports, two UART/USART modules with LIN support, a 10-bit ADC with up to 35 channels, and Core Independent Peripherals (CIPs) such as Complementary Waveform Generator (CWG), Windowed Watchdog Timer (WWDT), and CRC/Memory Scan. The device uses an enhanced Harvard architecture with a 16-bit instruction word, 8-bit data bus, hardware multiply, and 31-level stack. Internal oscillator accuracy is factory calibrated to ±1% across 0-70 °C and ±2% over -40 to +125 °C, eliminating external crystals in many cost-sensitive designs. The integrated 5-bit DAC and rail-to-rail input comparators enable signal-conditioning tasks without external components. Typical applications include industrial sensor nodes, home appliances, automotive body controllers, LED lighting drivers, low-power IoT edge devices, battery chargers, and consumer handheld products. The 5V tolerant I/O simplifies interfacing to legacy 5V peripherals and modules without level shifters. When designing with this part, allocate the PPS mapping early - each peripheral function can be routed to multiple I/O pins. Ensure decoupling capacitors are placed within 3 mm of VDD pins and the exposed thermal pad (on UQFN packages) is soldered to the ground plane for thermal dissipation and electrical performance. This page synthesizes distributor pricing, drop-in alternatives from the same PIC18F K40 family, and practical design notes that complement the manufacturer datasheet with selection guidance, comparison data, and verified cross-references not aggregated on a single OEM or distributor page.

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