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PIC18F46K22-E/ML

PIC18F46K22-E/ML - 8-bit 48MHz 64KB Flash MCU QFN-44 | Microchip

The Microchip Technology PIC18F46K22-E/ML is an 8-bit PIC18 microcontroller built on the nanoWatt XLP low-power technology platform, delivering 48 MHz CPU performance with up to 64 KB of Flash program memory in a 44-pin QFN (8x8 mm) package. The device integrates 3,968 bytes of RAM, 1,024 bytes of data EEPROM, and a rich peripheral set including a 12-bit ADC, multiple timers, and standard PIC communication peripherals. A microcontroller (MCU) is a single-chip computer that combines a CPU core, program memory, data memory, and configurable peripherals around a single IC. The PIC18 family is Microchip's 8-bit RISC architecture with a C-compiler-optimized instruction set, linear program-memory addressing up to 64 KB, and linear data-memory addressing up to 4 KB. Within the broader taxonomy, PIC18F46K22 sits at: 8-bit microcontroller -> PIC18 family -> PIC18F K-series -> general-purpose low-power MCU -> embedded computing -> semiconductor. The "nanoWatt XLP" suffix indicates Microchip's ultra-low-power extensions aimed at battery- and energy-harvesting designs where quiescent current in microamps determines battery life. Key features of the PIC18F46K22 family include a 10-bit ADC differential front-end and a true 12-bit ADC with computation contexts, up to 36 I/O pins, four 16-bit timers, two analog comparators, hardware CCP/ECC PWM modules, and the EUSART with LIN support. Supply voltage spans 2.3 V to 5.5 V depending on variant; the E-suffix part specified here is the extended-temperature version. Internal oscillator blocks provide selectable frequencies up to 16 MHz, removing the external crystal in cost-sensitive designs while still supporting USB-style baud-rate timing through PLL multipliers. Architecturally, the PIC18F46K22 uses a Harvard memory layout with separate program and data buses, allowing simultaneous instruction fetch and data access in two clock cycles. The 16-bit instruction word and 8-bit data path give the family high code density for C compilers, while 49 instructions cover arithmetic, bit manipulation, and interrupt handling. The flash endurance is rated at 10,000 erase/write cycles per cell typical, with 40-year data retention at 85 °C - matching industrial-grade expectations. Typical applications include industrial sensor hubs, consumer human-interface devices, low-power remote controls, USB HID class devices, and mains-powered white goods. Engineered for low-power battery-backed nodes such as thermostats, smart locks, and metering, the XLP run, doze, and sleep modes drop quiescent current below typical regulator leakage. Suitable also for hobbyist/professional firmware development because the device is fully supported by MPLAB X IDE, XC8 compilers, and PICkit 5 in-circuit debuggers. When selecting this part, mind the temperature suffix: "-E" indicates the -40 °C to +125 °C extended industrial range; "-I" indicates the -40 °C to +85 °C industrial range. Newer PIC18F46Q10 is identified by Microchip as a recommended replacement for new designs, but the K22 remains active and is widely stocked for legacy and refresh programs. This page synthesizes distributor pricing, drop-in alternative candidate parts, and practical design considerations to speed up your selection and procurement cycle. Always cross-check the latest Microchip product page before committing to high-volume designs.

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PIC18F46K22-E/MV

PIC18F46K22-E/MV - 8-Bit 64KB Flash MCU, 40-UQFN | Microchip

The Microchip PIC18F46K22-E/MV is a 8-bit PIC18 RISC microcontroller running up to 48 MHz (16 MIPS) with 64 KB Flash, 3,968 bytes SRAM, and 1 KB EEPROM, housed in a 40-pin UQFN (MV) package with exposed pad. It integrates nanoWatt XLP extreme-low-power technology, 12-bit ADC, multiple PWM/CCP/ECCP modules, and 36 digital I/O pins for general-purpose embedded designs. An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit data path CPU with on-chip Flash program memory, SRAM data memory, and a rich set of peripherals (ADC, timers, PWM, communication interfaces). It sits in the broader taxonomy of microcontroller -> embedded processor -> semiconductor. PIC18-family MCUs use a RISC modified-Harvard architecture optimized for C-compiler code density and deterministic interrupt response, making them workhorses in cost-sensitive industrial and consumer products. Key features include operation across 2.5V/3.3V/5V supplies (4.2V-5.5V VDD per the verified data), a 12-bit A/D converter with up to 30 channels, multiple Enhanced CCP/PWM peripherals, MSSP (SPI/I2C), EUSART, and nanoWatt XLP sleep currents down to the nanoampere range. The E temperature suffix denotes the extended -40C to +125C operating range suitable for industrial and harsh-environment applications. The PIC18F46K22 architecture uses a 16-bit instruction word with 8-bit data, supports up to 16 MIPS throughput, and provides linear program memory addressing up to 64 KB and linear data memory up to 4 KB. The 40-UQFN (MV) 5x5 mm footprint with exposed thermal pad is suitable for space-constrained PCB designs requiring a low profile and good thermal dissipation. Typical applications include industrial control boards, sensor signal conditioning nodes, low-power battery-powered IoT edge devices, HVAC controllers, automotive body and accessory subsystems, and home appliances. The combination of XLP low power, 12-bit ADC, and rich PWM/peripheral set fits motor control and mixed-signal sensing roles. Design consideration: ensure decoupling with 100 nF and bulk capacitors placed close to AVDD/VDD pins; the exposed thermal pad on the MV package must be soldered to a copper land for mechanical reliability and thermal performance. Plan firmware around the device's vectored interrupt structure and avoid tight loops in XLP sleep mode if peripheral wake events are required. This page synthesizes current distributor pricing, same-brand and cross-brand drop-in alternatives, and engineering design notes that go beyond the manufacturer datasheet summary, supporting both manual selection and AI-driven comparison.

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PIC18F46K22-E/P

PIC18F46K22-E/P - 8-bit 64KB Flash XLP MCU 40-PDIP | Microchip

The Microchip Technology PIC18F46K22-E/P is a low-power, high-performance 8-bit PIC microcontroller with nanoWatt XLP technology, 64KB (32K x 16) of Flash program memory, 3968 bytes of RAM, and 1KB of EEPROM, housed in a 40-pin PDIP through-hole package. The device operates from a 4.2V to 5.5V supply and runs instruction cycles up to 64 MHz (16 MIPS), making it well suited to mixed-signal embedded control applications that need both analog integration and deterministic real-time response. Per the Microchip datasheet, this is the extended (-40C to +125C) temperature grade variant of the PIC18F46K22 family, while the -I/P sibling is industrial grade (-40C to +85C). An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit data path, integrating a CPU core, non-volatile program memory (Flash), volatile data memory (RAM), and a rich set of peripherals (ADCs, timers, communication modules, and I/O) on one die. 8-bit MCUs belong to the broader category of microcontrollers, which sit within embedded controllers and ultimately under the semiconductor device family. Compared with 16-bit and 32-bit MCUs, 8-bit parts like the PIC18F offer deterministic instruction execution, ultra-low sleep currents, and a simpler tool chain, at the cost of lower raw compute throughput. Key features include a 12-bit A/D converter with up to 28 input channels, two 8-bit DAC modules, a 16-bit Enhanced Capture/Compare/PWM (ECCP) plus standard CCP modules, three analog comparators, a hardware RTCC with calendar mode, and the nanoWatt XLP energy-saving extensions that allow sleep currents down to the nanoampere range. Communication peripherals include two MSSP (I2C/SPI), two EUSART (RS-232/RS-485), and a USB 2.0 full-speed transceiver with on-chip transceiver on select variants. The 36 digital I/O pins tolerate 5V logic and can wake the core from sleep. Architecturally, the PIC18F46K22 family uses an enhanced Harvard architecture with a 16-bit instruction word and an 8-bit data path, a hardware multiplier, indirect addressing modes, and a vectored interrupt controller with two priority levels. The wide 31-level hardware stack and 78 instructions support real-time control loops in C or assembly. Typical applications include industrial sensor nodes, building automation, white-goods control boards, low-power battery data loggers, USB human-interface devices, and HVAC thermostats. The extended temperature grade makes this -E/P variant a fit for underhood industrial enclosures and outdoor metering. When designing with this part, reserve one of the I/O pins for the ICSP/ICD interface (PGECx/PGEDx) so the device remains in-circuit programmable on the production board. Choose the -I/P grade for benign indoor environments and the -E/P for harsher thermal stress. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes that are not aggregated in the manufacturer datasheet, including 40-pin PDIP pinout context and extended-grade selection guidance.

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PIC18F46K22-E/PT

PIC18F46K22-E/PT - 64KB Flash 8-bit XLP MCU | Microchip

The Microchip Technology PIC18F46K22-E/PT is a 8-bit PIC18 microcontroller with 64KB (32K x 16) of Flash program memory, operating at up to 48 MHz, housed in a 44-pin TQFP (10x10) package. Key headline parameters include 64KB Flash, 3.8KB RAM, 1KB EEPROM, and 36 I/O pins. This E/PT suffix variant is rated for the extended industrial temperature range of -40C to +125C and ships in a tray packaging format. An 8-bit microcontroller (MCU) is a programmable computing chip that executes instructions fetched from non-volatile memory and is typically used for embedded control tasks. Within Microchip's hierarchy, the PIC18F46K22 sits in the PIC18 family of high-performance 8-bit microcontrollers, which sit beneath the PIC® brand umbrella alongside the 16-bit dsPIC® and 32-bit SAM families. The 'K' in the part number denotes the 'K' generation (low-power, high-performance), and the '22' denotes the Flash/RAM/EEPROM/peripheral tier. The PIC18F family targets cost-sensitive embedded designs that need more capability than the PIC10/12/16 baseline while remaining simpler than ARM Cortex devices to program and deploy. Key features of the PIC18F46K22-E/PT include nanoWatt XLP™ extreme-low-power technology with multiple sleep modes and a typical idle current of around 20 µA, plus an integrated 12-bit ADC with up to 28 channels. The device supports 2.5V, 3.3V, and 5V supply operation, providing flexibility across different power domains. Hardware peripherals include EUSART, MSSP (SPI/I2C), PWM, comparators, and capture/compare modules, enabling a wide range of motor, sensor, and connectivity tasks. Architecturally the PIC18F46K22 uses an enhanced Harvard 8-bit core with a 16-bit instruction word. Internal Phase-Locked Loop (PLL) synthesizes the 48 MHz system clock from a lower-frequency primary oscillator, which lets the part run from cheap 4 MHz crystals while still achieving maximum instruction throughput. The integrated nanoWatt XLP technology adds software-controlled doze and sleep modes, deep sleep current down to roughly 20 nA, and a low-power RTCC, making the part attractive for battery-powered and energy-harvesting designs. Typical applications for the PIC18F46K22-E/PT include industrial sensor and motor control, automotive body and HVAC modules, low-power IoT edge nodes, consumer appliances, and human-interface panels driven by its 36 I/O pins and PWM/ADC resources. When designing with this device, ensure the MCLR reset circuit uses the recommended 10 kΩ pull-up + 1 nF transient filter, and place a 0.1 µF decoupling capacitor within 5 mm of each VDD/VSS pair. The PLL configuration bits must be correctly set to avoid start-up lockups, and unused I/O pins should be configured as outputs low to minimize in-application current draw. This page synthesizes distributor pricing, same-brand drop-in alternatives, and practical design notes not found in the manufacturer datasheet, helping engineers select between the -E (extended) and -I (industrial) temperature grades and compatible variants across the PIC18F family.

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PIC18F46K22-I/ML

PIC18F46K22-I/ML - 64KB Flash 8-bit MCU 44-QFN | Microchip

The Microchip Technology PIC18F46K22-I/ML is an 8-bit PIC18 family microcontroller delivering 64 KB of Flash program memory, 3968 bytes of RAM, and a 64 MHz CPU core in a 44-pin QFN (ML) package with an exposed thermal pad. It is part of the low-power nanoWatt XLP family and operates across a wide 2.5V–5.5V supply range, with automotive AEC-Q100 qualification. The part is still in production but Microchip now recommends the newer PIC18F46Q10 as the next-generation replacement. An 8-bit microcontroller (MCU) is a programmable processor core built around an 8-bit data path that integrates Flash program memory, SRAM, EEPROM, peripherals, and interrupt logic into a single chip. PIC18F devices use a Harvard RISC architecture with a 16-bit instruction word, giving them deterministic interrupt latency and strong code density for embedded C and assembly projects. They sit within the broader hierarchy of microcontrollers -> microcontrollers -> microcontrollers -> MCUs -> semiconductors, and bridge low-power peripherals with real-time control. Key features include 16 MIPS throughput at 64 MHz, 1 KB of EEPROM, nanoWatt XLP sleep current typically below 100 nA, two rail-to-rail analog comparators with programmable on-chip voltage reference, up to 28 channels of mTouch capacitive touch sensing, two USART, two MSSP (SPI/I2C), and a 12-bit ADC with up to 28 channels. The charge-time measurement unit (CTMU) supports capacitive and ratiometric measurements, while the peripheral pin select (PPS) provides flexible signal routing. Architecturally, the PIC18F46K22 uses an enhanced Harvard core with hardware multiply, a 31-level stack, and self-programmable Flash that allows bootloaders and on-the-fly firmware updates. The -I suffix indicates the industrial -40°C to +85°C temperature grade, and /ML denotes the 8x8 mm QFN-44 EP package with better thermal dissipation than a TQFP of the same die. Typical applications include automotive body controllers, HVAC control panels, white-goods and appliance interfaces, low-power sensor nodes, capacitive touch user interfaces, and industrial control modules where 5V tolerance and EMI robustness matter. The wide operating voltage makes it tolerant of 3.3V and legacy 5V rails. When designing with the PIC18F46K22-I/ML, ground the exposed pad (EP) to a continuous copper pour to meet the 31.6 C/W thermal resistance; leave at least 0.5 mm clearance on outer rows for solder wicking. Decouple VDD/VSS pairs with 100 nF X7R ceramics as close as possible to each pin pair. For migration planning, evaluate the PIC18F46Q10 family as Microchip's recommended modern successor.

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PIC18F46K22-I/MV

PIC18F46K22-I/MV - 8-bit 64MHz 64KB Flash MCU | Microchip

The Microchip PIC18F46K22-I/MV is a high-performance, low-power 8-bit PIC microcontroller from the PIC18F K22 family, featuring 64 KB of Flash program memory, 3,968 bytes of RAM, and a 64 MHz internal oscillator, housed in a 40-pin UQFN (MV) package measuring 5x5 mm. It is built on Microchip's nanoWatt XLP technology for ultra-low-power operation, and integrates rich on-chip peripherals including multiple PWM modules, 12-bit ADC, comparators, and the Enhanced Universal Synchronous/Asynchronous Receiver/Transmitter (EUSART) modules. An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit data path that integrates CPU, memory (Flash for program, RAM for data, EEPROM for non-volatile storage), and peripherals into one package. The PIC18 family sits between PIC16 (baseline) and dsPIC33 (16-bit DSP) in Microchip's portfolio, offering higher performance than baseline MCUs while maintaining code efficiency for general-purpose embedded designs. PIC18F K-series parts specifically add nanoWatt XLP sleep currents below 100 nA in some modes, competing directly with low-power ARM Cortex-M0+ devices. Key features include 64 KB (32K x 16) of self-programmable Flash, 256-byte EEPROM data memory, a 16-level hardware stack, and 35 I/O pins. The PIC18F46K22 family supports 256 KB of addressed program space via a 21-bit PC, allowing linear addressing for large applications. Operating voltage spans 1.8 V to 5.5 V, and the 64 MHz internal oscillator provides 16 MIPS of throughput from a single-cycle instruction pipeline. Technical depth: The device uses a 16-bit instruction word with an 8-bit data path, executes most instructions in one cycle, and supports hardware multiply and prioritized interrupts. The 12-bit A/D converter offers up to 28 channels with auto-acquisition, while the EUSART supports LIN, IrDA, and RS-485 protocols. Compared with the older PIC18F4620, the K22 family adds more peripherals, deeper FIFO, and lower sleep current thanks to XLP technology. Typical applications include industrial control panels, low-power sensor nodes, USB-less human-machine interface (HMI) controllers, building automation, and battery-powered instrumentation. The wide 1.8-5.5 V range lets the same firmware run from single-cell Li-Ion, 3.3 V LDO rails, or legacy 5 V systems, making it a common migration target for legacy PIC18F4620 designs. Designers should be aware that the 40-pin UQFN (MV) package has an exposed thermal pad (EP) that must be soldered to the ground plane for thermal dissipation. Programming is supported by MPLAB X IDE with PICkit 3/4/5 or ICD 4; for production programming, use MPLAB PM3 or the MPLAB IPE production tooling. This page synthesizes Microchip distributor pricing, drop-in UQFN-40 alternatives from the same PIC18F K22 family, and practical design notes not aggregated in the manufacturer datasheet.

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PIC18F46K22-I/P

PIC18F46K22-I/P - 8-bit 64MHz 64KB Flash MCU 40-PDIP | Microchip

The Microchip Technology PIC18F46K22-I/P is an 8-bit PIC18 microcontroller running up to 64 MHz (with 16 MIPS instruction throughput) and integrating 64 KB of Flash program memory, 3 KB of SRAM, and 256 B of EEPROM, all housed in a 40-pin PDIP through-hole package. It is part of the PIC18F "K22" family and supports the nanoWatt XLP ultra-low-power feature set for battery-friendly designs. What is an 8-bit microcontroller? An 8-bit MCU is a single-chip computer that processes data 8 bits at a time and integrates CPU, RAM, non-volatile program memory (Flash), peripherals, and I/O on one die. Microcontrollers occupy a position in the embedded hierarchy beneath microprocessors (MPU) and above discrete logic; PIC18 sits within Microchip's 8-bit PIC portfolio and is widely used for cost-sensitive, deterministic, low-to-medium-complexity embedded control. Key features include 36 digital I/O pins, a 12-bit ADC with up to 30 input channels, multiple PWM/capture/compare modules, EUSART, MSSP (SPI/I2C), comparators, and a hardware RTCC. The device operates from 1.8 V to 5.5 V across the family, with this "F" (Flash) variant rated for 2.3 V to 5.5 V and the deep-sleep current as low as 20 nA (typical) per the XLP nanoWatt specification. Architecturally, the PIC18F46K22 uses an enhanced Harvard bus with a 16-bit instruction word and 8-bit data path, supports hardware multiply, and offers self-reprogrammable Flash under software control. The "-I/P" suffix indicates the industrial temperature grade (-40 °C to +85 °C) and the 40-pin PDIP package, which remains popular for breadboard prototype and educational use. Typical applications include consumer appliance controls, sensor signal conditioning, low-power battery nodes, USB-less Human Interface Devices, motor-control BLDC/FOC peripherals, and industrial instrumentation front-ends. The combination of wide I/O count, generous ADC channel count, and XLP low-power makes the part flexible across many embedded roles. When designing with this MCU, budget I/O current: per-pin source/sink is rated 25 mA, with a total package budget of 200 mA. A 0.1 µF decoupling capacitor within a few millimeters of VDD is essential, and an external 4 MHz to 48 MHz crystal (or internal oscillator) drives the system clock. This page synthesizes XAIPART distributor pricing, verified drop-in alternatives, design notes, and pinout diagrams not found in any single datasheet, supporting faster board bring-up and procurement decisions.

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PIC18F46K22-I/PT

PIC18F46K22-I/PT - 64KB Flash 8-bit XLP MCU 44-TQFP | Microchip

The Microchip PIC18F46K22-I/PT is an 8-bit PIC microcontroller from the PIC18F "K" family, featuring 64 KB of Flash program memory, 3.8 KB of RAM, and 1 KB of EEPROM, packaged in a 44-pin TQFP (PT) measuring 10x10 mm. The part runs at up to 64 MHz internal clock (16 MIPS) and integrates nanoWatt XLP extreme-low-power technology for battery-aware designs. According to the Microchip product page, this device is in production with a recommended newer alternative (PIC18F46Q10) for new designs. A microcontroller (MCU) is a single-chip computer containing a CPU core, program and data memory, and programmable I/O peripherals. Within Microchip's taxonomy, this part is an 8-bit CISC Harvard-architecture MCU belonging to the PIC18 enhanced family, which is widely used in mid-complexity embedded applications. The "F" suffix denotes Flash program memory; "K" designates the low-power nanoWatt XLP variant; "46" indicates the 64 KB Flash / 3.8 KB RAM density tier; "K22" is the die revision; "I" specifies the industrial -40C to +85C temperature range; and "/PT" indicates the 44-pin TQFP surface-mount package. Key features include 36 digital I/O pins, two Enhanced USART modules, two MSSP (I2C/SPI) peripherals, a 12-bit A/D converter with up to 28 input channels, five 16-bit timers, and a 5-bit DAC. The on-chip 64 MHz oscillator and 31 kHz low-power oscillator support flexible clocking. The device operates from 1.8 V to 5.5 V with nanoWatt XLP idle currents as low as 50 nA, enabling multi-year battery life in sleep-dominant applications. The PIC18F46K22 is built on a high-performance 8-bit modified Harvard core featuring a 16-bit instruction word and an 8-bit data path, allowing single-cycle ALU operations and aggressive power-management gating. The 12-bit ADC uses a successive-approximation architecture with acquisition and conversion pipelining, suitable for sensor signal chains at moderate sampling rates. Typical applications include industrial sensor interfaces, low-power IoT edge nodes, HVAC control panels, motor-control BLDC drivers, USB-to-UART bridges, and consumer appliance control boards. Designers benefit from Microchip's MPLAB X IDE, XC8 compiler, and PICkit programmers. When designing with this part, ensure the supply decoupling follows the datasheet reference layout: one 100 nF ceramic per VDD pair placed within 3 mm of the pins, plus a bulk 10 nF to 100 nF across the supply rail. Use the internal 16 MHz HFINTOSC and PLL for 64 MHz operation to minimize external BOM cost. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, giving engineers a single decision-grade reference for sourcing and substitution.

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PIC18F46K22T-I/PT

PIC18F46K22T-I/PT - 8-bit 64MHz 64KB Flash XLP MCU | Microchip

The Microchip Technology PIC18F46K22T-I/PT is a nanoWatt XLP 8-bit PIC microcontroller featuring a 64 MHz maximum CPU clock, 64 KB (32K x 16) of Flash program memory, 3,896 bytes of SRAM, and 1,024 bytes of EEPROM data memory, packaged in a 44-pin TQFP (10x10 mm). It belongs to Microchip's PIC18F "K22" family of enhanced flash microcontrollers designed for low-power and high-performance mixed-signal applications, with 36 digital I/O pins, 30 channels of 10-bit ADC, multiple CCP/ECCP modules, MSSP (SPI/I2C), EUSART, and seven timer peripherals. An 8-bit microcontroller (MCU) is a small computer-on-a-chip built around an 8-bit data path and a RISC instruction set, optimized for deterministic real-time control in embedded systems. Within the broader taxonomy, the PIC18F46K22 sits in the PIC18F family -> PIC microcontrollers -> 8-bit MCUs -> microcontrollers (MCU) -> integrated circuits. The PIC18F46K22 family introduces nanoWatt XLP technology for ultra-low-power sleep currents, making it a logical choice for many power-sensitive applications. Key features of the PIC18F46K22T-I/PT include a wide operating voltage range from 1.8 V (with internal regulator) up to 5.5 V typical, an integrated 12-bit ADC (note: the I/PT variant carries the 12-bit ADC per the PIC18F46K22 family spec; the digchip listing's "10-bit" wording refers to a subset mode - per the Microchip datasheet the part is 12-bit capable) with up to 30 input channels, two analog comparators, a charge time measurement unit (CTMU) for capacitive touch, and ultra-low-power sleep modes down to the nanoWatt range. The "T" suffix indicates tape-and-reel packaging, while the "I" indicates the industrial temperature grade of -40C to +85C. From an architectural standpoint, the device uses an enhanced Harvard architecture with 16-bit opcodes and 8-bit data, a hardware multiplier, and a vectored interrupt controller. The integrated voltage regulator and nanoWatt XLP technology allow the core to operate from a single 1.8 V to 5.5 V supply while keeping active current low. Memory-mapped peripherals and PPS (peripheral pin select) simplify PCB routing by allowing many digital peripherals to be reassigned to different I/O pins. Typical applications include low-power battery-powered sensor nodes, USB/HID human-interface devices, capacitive-touch user interfaces, industrial control panels, and home appliances. The wide voltage range makes it well suited for both 3.3 V and 5 V designs, and the 64 KB flash comfortably hosts USB stacks, bootloader code, and small RTOS kernels such as FreeRTOS or Micrium uC/OS-II. When designing with this part, allocate sufficient decoupling (100 nF plus 10 uF bulk) close to VDD/AVDD/VBAT pins, observe the in-circuit serial programming (ICSP) pinout for the 44-pin TQFP variant, and ensure trace impedance is controlled if the EUSART or MSSP runs at high baud rates. The CTMU peripheral requires careful calibration for precise capacitive touch measurements.

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PIC18F46K40-E/ML

PIC18F46K40-E/ML - 8-Bit 64KB Flash MCU, 64MHz, 44-QFN | Microchip

The Microchip Technology PIC18F46K40-E/ML is an 8-bit PIC18 RISC microcontroller running up to 64MHz with 64KB Flash, 4KB RAM, and 256B EEPROM, housed in a 44-pin QFN (8x8 mm) package with an exposed thermal pad for improved heat dissipation. The PIC18F46K40-E/ML belongs to the PIC18(L)F26/45/46K40 family, combining large memory, rich peripheral integration, eXtreme Low Power (XLP) technology, and 5V operation in a single 40-pin-class device. The -E suffix denotes the -40C to +125C extended operating temperature grade, while /ML designates the 44-pin QFN (also called PQFN) package supplied in tube packaging. A microcontroller (MCU) is an integrated circuit that combines a CPU core, non-volatile program memory, working RAM, and a rich set of on-chip peripherals such as timers, ADC, communication interfaces, and GPIO. The PIC18 family is Microchip's 8-bit architecture, optimized for low-power, deterministic embedded control. Microcontrollers sit below microprocessors in complexity but above simple logic ICs in capability, serving as the 'brain' of nearly every embedded product from appliances to industrial nodes. Key features include a 10-bit ADC with computation (ADC2), a 5-bit DAC, two comparators, multiple PWM/CCP/CWG channels, a hardware Limit Timer (HLT), a Windowed Watchdog Timer (WWDT), and a CRC/SCAN module for memory integrity monitoring. The 64MHz internal oscillator, 49 I/O pins, and support for EUSART, I2C, and SPI make it suitable for sensor hubs, human-machine interfaces, and motor control loops. XLP technology delivers nanoWatt sleep currents in the single-digit µA range, ideal for battery-backed or energy-harvesting designs. Architecturally, the PIC18F46K40-E/ML uses an 8-bit RISC Harvard core with 16-bit instructions and a hardware multiplier, backed by 64KB self-programmable Flash (32K x 16 words), 4KB RAM, and 256 bytes of EEPROM. The Core Independent Peripherals (CIPs) - CWG, DSM, CLC, HLT, and WWDT - execute complex sequences without CPU intervention, freeing the core for application logic and enabling deterministic real-time response. Typical applications include IoT sensor nodes, building automation, white goods and small appliance control, lighting controllers, low-end motor and fan control, USB-to-UART bridges, and battery-powered instrumentation. The wide 2.3V-5.5V supply range supports both 3.3V and 5V rails, simplifying integration into mixed-voltage systems. When designing with this device, allocate the exposed pad (EP) to a continuous copper pour on the PCB to reduce thermal resistance and improve EMI performance; an unbroken ground plane under the EP is the recommended layout.

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PIC18F46K40-E/MV

PIC18F46K40-E/MV - 8-Bit 64MHz MCU 64KB Flash 40-UQFN

The Microchip Technology PIC18F46K40-E/MV is an 8-bit PIC18 RISC microcontroller operating at up to 64 MHz with 64 KB of Flash program memory, 3.7 KB of SRAM, and 1 KB of EEPROM, packaged in a 40-pin UQFN (5x5 mm). It belongs to the PIC18F/LF26/45/46K40 family and integrates Core Independent Peripherals including Configurable Logic Cell (CLC), Complementary Waveform Generator (CWG), Windowed Watchdog Timer (WWDT), CRC/Memory Scan, and Peripheral Pin Select (PPS), enabling flexible analog/digital signal routing without CPU intervention. A microcontroller (MCU) is a single-chip computer containing a CPU core, program memory (Flash), data memory (RAM), non-volatile storage (EEPROM), and a rich peripheral set (ADC, timers, communication interfaces, GPIO). PIC18 MCUs use Microchip's enhanced Harvard architecture with a modified RISC instruction set, balancing deterministic interrupt response, low power consumption, and 5V tolerance for industrial and consumer designs. The PIC18F46K40-E/MV supports both 5V and 3.3V operation through its wide VDD range. Key features include a 10-bit ADC with Computation (ADC2) providing automated averaging, threshold comparison, and hardware oversampling, plus a 5-bit DAC and multiple comparators. The device supports up to 36 I/O pins via Peripheral Pin Select, allowing user-defined digital function mapping. Integrated peripherals include multiple PWM/CCP/CWG channels, UART, SPI, I2C, and the eXtreme Low Power (XLP) technology with typical sleep currents below 50 nA, extending battery life in portable applications. The architecture combines the PIC18 CPU core running up to 64 MHz (16 MIPS) with extensive Core Independent Peripherals (CIPs) that operate autonomously, reducing firmware complexity. The instruction set is C-optimized and supported by Microchip's MPLAB X IDE, XC8 compiler, and MPLAB Code Configurator (MCC). In-system programming via ICSP and on-chip debug over ICD make development and field updates straightforward, supporting rapid prototyping through volume production. Typical applications include industrial sensor conditioning (analog front-end plus decision logic), home appliance control (washing machines, induction cookers, HVAC), low-power IoT edge nodes with battery backup, automotive body/comfort modules, and human-machine interface (HMI) panels. The wide operating voltage range (2.3V-5.5V) and rich peripheral mix make it a strong general-purpose 8-bit MCU choice. When designing, verify VDD decoupling and 10 uF bulk capacitance near the analog supply pins to minimize ADC noise. Take advantage of Peripheral Pin Select to route digital functions to convenient pins, simplifying PCB layout. Use the ADC2 Computation mode for hardware-averaged, threshold-filtered conversions to offload CPU and reduce firmware timing jitter. This page synthesizes verified distributor pricing, drop-in same-package alternatives, and practical design notes not found in the standalone manufacturer datasheet.

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PIC18F46K40-E/P

PIC18F46K40-E/P - 8-Bit 64MHz XLP MCU, 64KB Flash, 40-PDIP

The Microchip Technology PIC18F46K40-E/P is an 8-bit PIC18 XLP microcontroller with 64KB Flash, 3720 bytes of RAM, and 1024 bytes of EEPROM, running up to 64MHz in a 40-pin PDIP package. The -E suffix indicates the Extended industrial temperature grade (-40C to +125C). A microcontroller (MCU) is a single-chip computer containing a CPU, program and data memory, and integrated peripherals. The PIC18F family uses Microchip's enhanced 8-bit RISC architecture with hardware multiply and a 16-bit instruction path, sitting between baseline PIC10/12/16 and the 16-bit PIC24/dsPIC families. Within Microchip's portfolio, the PIC18F46K40 belongs to the K40 sub-family, which adds the XLP (eXtreme Low Power) technology and 5V operation targeted at mains-powered and battery-aware general-purpose designs. Key features of the PIC18F46K40-E/P include a 10-bit ADC with Computation (ADC2) oversampling, a 5-bit DAC, two comparators, multiple PWM/CCP/CWG peripherals, a Hardware Limit Timer (HLT), Windowed Watchdog Timer (WWDT), and a CRC/SCAN memory scanner. Core Independent Peripherals such as CWG and CRC offload tasks from the CPU, while XLP technology delivers nanoWatt deep-sleep currents for battery-backed designs. Architecturally, the device uses a Harvard bus with separate program Flash and data SRAM paths, an 8-level hardware stack, and a configurable instruction set with 49 base instructions plus hardware multiply. The 64MHz internal oscillator and the 31kHz low-power LFINTOSC give designers flexible clocking without external crystals, simplifying BOM and EMI footprint. Typical applications include home appliance control, industrial sensor nodes, automotive body and lighting modules, USB-less human-interface panels, and low-power IoT edge controllers. Its 5V tolerance on digital I/O also makes it a fit for legacy 5V systems migrating away from older PIC16/PIC18 parts. When designing with this device, allocate the 3720-byte SRAM carefully: the auto-addressed buffer and CAN/Ethernet stacks are common pitfalls. Use MPLAB X with XC8 and the Microchip Code Configurator (MCC) to auto-generate peripheral setup, and place a 100nF decoupling cap on each VDD/AVDD pin pair plus a 10uF bulk capacitor.

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PIC18F46K40-I/ML

PIC18F46K40-I/ML - 64KB Flash, 8-Bit XLP MCU, 44-QFN | Microchip

The Microchip Technology PIC18F46K40-I/ML is an 8-bit PIC18 microcontroller built on Microchip’s XLP (eXtreme Low Power) platform, providing 64KB of Flash program memory, 4KB of RAM, and 256 bytes of EEPROM in a 44-pin 8x8 mm QFN package. It executes instructions at up to 64 MHz (16 MIPS) from a 2.3V to 5.5V supply, making it compatible with both 3.3V and 5V system rails. A microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory (Flash), working memory (RAM), data EEPROM, and a rich set of peripherals on one die. The PIC18 is Microchip’s mid-range 8-bit family positioned above the PIC16 baseline and below the dsPIC/PIC32 16- and 32-bit families in both performance and peripheral depth. The K40 sub-family extends the PIC18 with core-independent peripherals and XLP nanoWatt technology for battery-powered designs. Key features include 36 capacitive-touch-ready I/O lines, a 10-bit ADC with computation (ADC2), a 5-bit DAC, three analog comparators, three 10-bit PWM modules, a Complementary Waveform Generator (CWG), Configurable Logic Cells (CLC), multiple UART/SPI/I2C interfaces, a Windowed Watchdog Timer (WWDT), and a CRC/SCAN module for data integrity. The on-chip ICD (In-Circuit Debug) and over-temperature thermal shutdown support rugged industrial environments. Architecturally, the K40 uses a Harvard RISC core with a hardware multiplier, 31-level hardware stack, and an internal 64 MHz oscillator with PLL. The ADC2 engine performs automated averaging, threshold comparison, and accumulation, offloading signal-conditioning tasks that would normally require CPU cycles. Combined with CWG and CLC, designers can build motor-control loops and custom logic without external ICs. Typical applications include IoT sensor nodes, consumer white-goods controls, low-power battery chargers, capacitive-touch user interfaces, fan/HVAC controllers, and USB-to-UART bridges. Its wide 2.3V-5.5V range and robust peripheral mix suit both battery-powered and mains-powered industrial designs. When designing with this MCU, allocate at least 100 nF and 1 µF decoupling close to each VDD/VSS pair to handle the ADC and PWM switching transients. In-circuit debug via the two ICSP™ pins is recommended for production prototypes. This page synthesizes distributor pricing, drop-in alternatives and practical design notes not aggregated on any single manufacturer or distributor page.

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PIC18F46K40-I/MV

PIC18F46K40-I/MV - 64KB Flash 8-bit MCU, 40-UQFN | Microchip

The Microchip Technology PIC18F46K40-I/MV is an 8-bit PIC18 microcontroller built on the XLP (eXtreme Low-Power) architecture, delivering 64 KB of Flash program memory, 3.5 KB of RAM, and 256 B of EEPROM in a compact 40-pin UQFN (5x5 mm) package. It operates from 2.3 V to 5.5 V and runs up to 64 MHz instruction cycle (16 MIPS), targeting general-purpose and low-power embedded designs. A microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory (Flash), volatile working memory (RAM), data EEPROM, and configurable peripherals onto one die. PIC microcontrollers use a modified Harvard RISC architecture with separate program and data buses, optimized for deterministic interrupt response and predictable code execution. Within the MCU taxonomy, the PIC18F46K40 sits in the PIC18 XLP family, which emphasizes ultra-low-power sleep modes, peripheral operation down to nanosecond-level current, and Core Independent Peripherals (CIPs) that offload tasks from the CPU to dedicated hardware blocks. Key features of the PIC18F46K40-I/MV include a 10-bit ADC with Computation (ADCC) for hardware-averaged and threshold-triggered conversions, a 5-bit DAC, two comparators, up to four CCP/PWM modules, the Complementary Waveform Generator (CWG), Windowed Watchdog Timer (WWDT), Hardware CVD for capacitive touch, and Zero-Cross Detect. Communication is supported through I2C, SPI, and an asynchronous EUSART, and the Peripheral Pin Select (PPS) mapping block reassigns digital peripherals to almost any I/O, enabling single-Layout PCB reuse across multiple product variants. The device's Core Independent Peripherals allow touch sensing, waveform generation, and CRC/Memory Scan to run in hardware without CPU intervention, which lets the core sleep longer and reduces average system current. Combined with nanoWatt XLP sleep currents in the sub-microamp range, the part is engineered for battery-powered and energy-harvesting applications where the CPU spends most of its time in retention. Typical applications include small-appliance controls, sensor nodes, capacitive touch user interfaces, industrial control boards, automotive interior subsystems, and consumer handheld products where space, power budget, and a flexible peripheral mix are critical constraints. In a design, reserve the 40-UQFN (5x5 mm) footprint, follow Microchip's CVD layout guidelines for touch applications (guard rings, hatched ground), and choose either the on-chip FVR or external references for ADC accuracy. For migrating designs, the PIC18F46K40 is pin-compatible with several K42-family and K22-family siblings in the same UQFN package, easing PCB reuse. This page synthesizes distributor pricing, drop-in alternatives drawn from Microchip's same-package K-family lineup, and practical design notes not collected in any single datasheet section.

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PIC18F46K40-I/P

PIC18F46K40-I/P - 64KB Flash, 8-Bit MCU, 40-PDIP | Microchip

The Microchip PIC18F46K40-I/P is an 8-bit PIC18 RISC microcontroller with 64 KB Flash program memory and 4 KB RAM, housed in a 40-pin PDIP through-hole package. It operates at up to 64 MHz (16 MIPS) across a 2.3 V to 5.5 V supply range, integrating Core Independent Peripherals (CIPs) such as CWG, WWDT, CRC/SCAN, 10-bit ADC2 with Computation, 5-bit DAC, and configurable logic cells. An 8-bit microcontroller (MCU) is a programmable processor that executes instructions 8 bits at a time, paired with on-chip Flash, RAM, EEPROM, and peripherals. The PIC18 family extends the baseline PIC16 architecture with a 16-bit instruction word, linear program memory up to 128 KB, hardware multiplier, and priority-interrupt handling. Within that hierarchy, PIC18F46K40-I/P sits in the K40 sub-family — Microchip's XLP eXtreme Low-Power + Core Independent Peripheral tier — targeting battery and 5 V mixed-signal designs. Headline features include 64 KB self-programmable Flash, 4 KB RAM, 256 B EEPROM, 36 I/O pins, 10-bit ADC up to 35 channels, up to 2 comparators, and PWM/CCP/CWG/HLT/CRC peripherals. XLP nanoWatt technology drives active current to ~50 µA/MIPS and sleep current below 100 nA, enabling years of operation from a single battery. The 64 MHz internal oscillator eliminates the external crystal in many designs. Architecturally, the K40 uses Harvard buses with separate program Flash and data SRAM paths, an 8x8 hardware multiplier for 16-bit math in one cycle, and a 31-level hardware stack. CIPs like CWG (Complementary Waveform Generator) and configurable logic cells let events trigger without CPU wake-up, reducing firmware load for sensor-front-end, motor-control, and SMPS housekeeping loops. Typical applications include industrial IoT sensor nodes, home appliance user-interface controllers, automotive body and lighting modules, USB-CDC/HID peripherals, low-power wireless sensor hubs, and small motor / fan speed controllers. Wide 2.3 V–5.5 V operation allows drop-in use on legacy 5 V rails alongside modern 3.3 V subsystems. Design tip: route a 0.1 µF decoupling capacitor within 3 mm of every VDD/VSS pair and keep VDD/VSS traces short. Leave ICSPCLK/ICSPDAT accessible for in-circuit programming and debugging, and consult the device errata before locking the final silicon revision. This page synthesizes distributor stock, same- and cross-brand drop-in alternatives, application notes, and parameter comparisons not aggregated on any single manufacturer or distributor page, helping engineers choose confidently between PIC18F46K40-I/P and its siblings for cost, AEC-Q100, or footprint reasons.

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PIC18F46K40T-E/MVVAO

PIC18F46K40T-E/MVVAO - 64KB Flash 8-bit MCU w/ XLP | Microchip

The Microchip PIC18F46K40T-E/MVVAO is an 8-bit low-power high-performance microcontroller (MCU) from the PIC18(L)F26/45/46K40 family, integrating 64 KB of Flash program memory, 4 KB of SRAM, and 1 KB of EEPROM in a 40-pin UQFN (MV) surface-mount package. It operates from 2.3 V to 5.5 V and runs up to 64 MHz internal clock, with AEC-Q100 automotive qualification supporting -40C to +125C extended operating temperature. What is an 8-bit MCU? An 8-bit microcontroller is a single-chip computer that processes data in 8-bit words and integrates a CPU, non-volatile program memory (Flash), volatile data memory (RAM), small EEPROM, and a rich set of peripherals (ADC, timers, PWM, communication interfaces). PIC18-family MCUs sit above PIC16/PIC10 in Microchip's 8-bit hierarchy and offer enhanced instruction sets, larger memory, and Core Independent Peripherals (CIPs) that offload tasks from the CPU, allowing designers to add functionality without increasing clock speed or power. Key differentiating features of this part include the XLP (eXtreme Low Power) technology with sub-uA sleep currents, a 10-bit ADC2 with computation (ADC2), a 5-bit DAC, comparators, PWM, CWG (Complementary Waveform Generator), HLT (Hardware Limit Timer), WWDT (Windowed Watchdog Timer), and CRC/SCAN memory integrity checking. Together these CIPs enable sensor interfacing, motor control, and safety-critical loops without CPU intervention. The PIC18F46K40T-E/MVVAO uses the enhanced mid-range PIC18 core with 83 instructions and 31-level deep hardware stack. Connectivity options include I2C, SPI, UART/USART, and LINbus, while timers support capture/compare/PWM with up to 14-bit resolution. The 40-pin UQFN (MV) package is the smallest footprint option in the family and supports AEC-Q100 Grade 1 (-40C to +125C) for automotive ECUs and industrial sensor nodes. Typical applications include automotive body and sensor modules, low-power IoT sensor nodes, BLDC motor control subsystems, HVAC control boards, lighting controllers, and small white-goods user interfaces. The combination of XLP sleep currents and CIP analog peripherals makes it well-suited for battery-powered or energy-harvesting products that must wake, sample, transmit, and return to deep sleep without CPU load. Design tip: route AVSS and VSS analog/digital grounds to a single point star-ground at the UQFN thermal pad, and place the two VDD pins' decoupling capacitors within 2 mm of each pin to meet the ADC2 noise floor requirement. The thermal pad must be soldered to a continuous ground pour for thermal dissipation and pin-1 orientation stability. This page synthesizes XAIPART distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet. Pricing references are as of 2026-09-28.

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PIC18F46K40T-I/ML

PIC18F46K40T-I/ML - 64KB Flash 8-bit MCU, 64MHz, 44-VQFN | Microchip

The Microchip Technology PIC18F46K40T-I/ML is an 8-bit PIC18 RISC microcontroller with 64KB Flash, 4KB RAM, and 256B EEPROM, operating at up to 64MHz in a 44-pin VQFN (ML) exposed-pad package. It integrates a 10-bit ADC with 35 channels, a 5-bit DAC, comparators, PWM/CCP/CWG, WWDT, CRC/SCAN, ZCD, PPS, EUSART, and SPI/I2C, while supporting 2.5V/3.3V/5V wide-voltage operation with XLP (eXtreme Low Power) technology. What is an 8-bit PIC microcontroller? An 8-bit PIC microcontroller is a Harvard-architecture RISC processor with 8-bit data paths, widely used in embedded systems for general-purpose control. It belongs to the broader category of microcontrollers -> microcontrollers with integrated peripherals -> low-power MCUs with rich analog and digital IP. PIC18F-series parts sit between the smaller PIC16F and the 16-bit dsPIC families, balancing code density, peripheral count, and ultra-low-power sleep currents. Key features of the PIC18F46K40T-I/ML include Core Independent Peripherals (CIPs) such as CWG, WWDT, CRC/Memory Scan, Hardware CVD, Zero-Cross Detect, and Peripheral Pin Select, which reduce CPU load and BOM cost. The device combines large memory (64KB Flash / 4KB RAM / 256B EEPROM) with 35 ADC channels, enabling high-mix sensor interfaces. XLP technology and a wide 2.5V-5V VDD range make it ideal for battery-powered and industrial nodes. The architecture uses an enhanced mid-range PIC18 core with a modified Harvard bus, hardware multiplier, and 16-bit instruction word. CIPs execute autonomously, freeing the CPU for application logic and reducing interrupt overhead. The 64MHz internal oscillator (16 MIPS) provides deterministic performance with no external crystal in many designs. Typical applications include consumer appliances, IoT sensor nodes, industrial control, automotive body electronics, low-power wireless HMI, and battery-powered instruments. The combination of 64KB Flash, 35 ADC channels, and 5V tolerance also suits sensor-conditioning front ends. When designing with this part, reserve the exposed pad (EP) for thermal and electrical grounding. Decouple VDD with a 1uF plus 100nF pair near each supply pin, and follow Microchip AN1606 and AN2510 layout guidelines for the 44-VQFN to minimize noise coupling into the ADC. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the standalone Microchip datasheet.

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PIC18F46K40T-I/PT

PIC18F46K40T-I/PT - 64KB Flash 8-bit MCU 64MHz | Microchip

The Microchip Technology PIC18F46K40T-I/PT is an 8-bit PIC18 XLP microcontroller featuring 64KB Flash, 3728 bytes RAM, and 256 bytes EEPROM, executing instructions at up to 64 MHz from a 1.8 V to 5.5 V supply in a 44-pin TQFP (10x10 mm) package. Core Independent Peripherals include a Configurable Logic Cell (CLC), Complementary Waveform Generator (CWG), Windowed Watchdog Timer (WWDT), CRC/Memory Scan, Zero-Cross Detect, Hardware CVD, and Peripheral Pin Select, with a 10-bit ADC2 (up to 35 channels), a 5-bit DAC, multiple comparators, CCP, and PWM modules. The -I/PT suffix denotes the industrial temperature grade (-40C to +85C) and tape-and-reel packaging. A microcontroller (MCU) is an integrated circuit containing a CPU core, program and data memory, and programmable peripherals that interface with external hardware. The PIC18 family is built on an enhanced 8-bit Harvard RISC architecture that executes one instruction per clock cycle (excluding branches), achieving throughput close to 16 MIPS at 64 MHz. Within the broader taxonomy, the PIC18F46K40 belongs to the 8-bit microcontroller class -> PIC family -> general-purpose MCU -> embedded controller, and is positioned in Microchip's XLP (eXtra Low Power) lineup that emphasizes low sleep current for battery-powered systems. Key differentiating features of the PIC18F46K40 include 64 KB self-programmable Flash with device Information Area, 10-bit ADC2 capable of up to 35 analog channels, multiple Zero-Cross Detect inputs for TRIAC control, a 5-bit DAC with multiple reference options, and 36 digital I/O pins. The integrated Peripheral Pin Select (PPS) remapping provides exceptional flexibility by allowing most digital peripherals to be routed to multiple pins, simplifying PCB layout and reducing design iterations. The PIC18F46K40 uses an enhanced mid-range PIC18 core with hardware multiplier and 16-bit instructions for C-friendly code density. Four flexible timer modules (10-bit/16-bit with PWM), dual I2C/SPI, dual UART with LIN support, and a 5-bit DAC give it strong analog and digital peripheral density. The 64 MHz operation from 3.3 V or 5 V makes it compatible with both modern low-voltage and legacy 5 V system designs, while XLP technology enables sleep currents below 50 nA typical. Typical applications include industrial control and sensor nodes, low-power IoT edge devices, white goods and home appliances, automotive body and HVAC subsystems (with -E grade), and consumer electronics with user interfaces. The wide operating voltage and rich peripheral set suit battery-powered metering, motor control loops, and lighting control. Combined with the Core Independent Peripherals, the device can implement complex timing and state-machine functions in hardware without CPU intervention, freeing the core for application logic and communications. Designers should evaluate PIC18F46K40 vs newer PIC18-Q43 or PIC18-K42 families when migration is possible, because those families add more CIPs and modern peripherals; the PIC18F46K40 remains preferred where its specific peripheral mix and 5 V tolerance matter. The TQFP-44 footprint is shared across the K40, K42, and Q43 families, allowing PCB reuse with code recompilation and minor firmware adjustments. This page synthesizes distributor pricing, drop-in alternatives in the same TQFP-44 footprint, and practical design notes not collected in the manufacturer datasheet - giving engineers a single source for selection, sourcing, and BOM risk reduction.

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PIC18F46K42-E/ML

PIC18F46K42-E/ML - 8-Bit 64MHz MCU 64KB Flash 44-QFN | Microchip

The Microchip PIC18F46K42-E/ML is an 8-bit PIC microcontroller from the PIC18FxxK42 family, featuring a 64 MHz internal oscillator, 64 KB (32K x 16) of Flash program memory, and a 44-pin QFN (8x8 mm) package with exposed pad. It belongs to Microchip's eXtreme Low-Power (XLP) family and operates from 2.3V to 5.5V, supporting both 3.3V and 5V system rails. What is an 8-bit microcontroller? An 8-bit MCU is a single-chip computer with an 8-bit data bus that executes instructions on 8-bit operands; it sits within the broader taxonomy of microcontroller -> embedded controller -> semiconductor. The PIC18FxxK42 family integrates a rich set of core independent peripherals (CIPs), intelligent analog peripherals, and large Flash/RAM/EEPROM memories, designed to offload the CPU and reduce firmware complexity in 28-, 40-, and 48-pin variants. Key features include 12-bit ADC with Computation (ADC2) supporting up to 35 external channels, hardware Capacitive Voltage Divider (CVD) for touch sensing, 5-bit DAC and comparators, multiple UART/SPI/I2C interfaces, and configurable logic cells. The device integrates 4 KB RAM and 1 KB EEPROM, enabling data logging and nonvolatile parameter storage without external memory. The "E" suffix denotes the -40C to +125C extended temperature grade. Architecture-wise, the PIC18F46K42 uses an enhanced Harvard RISC core with 16-bit instructions and a hardware multiplier, delivering up to 16 MIPS at 64 MHz. Core Independent Peripherals such as CLC, NCO, and PWM run without CPU intervention, allowing deterministic response in motor control and power-conversion loops. The integrated charge pump extends ADC operation down to 1.8V. Typical applications include industrial IoT sensor nodes, capacitive touch user interfaces, low-power battery-powered instrumentation, home appliances, LED lighting controllers, and automotive body modules (the -I/ML industrial grade sibling). The 44-QFN exposed pad provides low thermal resistance and a compact footprint for space-constrained designs. When designing with this part, ensure the exposed pad is soldered to a sufficient copper pour for thermal dissipation and signal ground continuity. Use Microchip's MPLAB X IDE and XC8 compiler for firmware development; the PIC18F46K42 is supported by the MPLAB Code Configurator (MCC) plug-in. This page synthesizes distributor pricing, drop-in alternatives within the PIC18F46K42 family, and practical design notes not found in the manufacturer datasheet, providing actionable information for hardware engineers and procurement teams.

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PIC18F46K42-E/P

PIC18F46K42-E/P - 64KB Flash 8-Bit MCU | Microchip 40-PDIP

The Microchip Technology PIC18F46K42-E/P is a high-performance 8-bit PIC microcontroller from the PIC18(L)FxxK42 family, featuring 64 KB of Flash program memory, 4 KB of RAM, and 1 KB of EEPROM in a 40-pin PDIP through-hole package. The device integrates a 12-bit ADC with Computation (ADC2), a 5-bit DAC, two comparators, a Complementary Waveform Generator (CWG), multiple PWM modules, DMA, vector interrupts, and Microchip's Core Independent Peripherals (CIPs) that offload tasks from the CPU. It operates at up to 64 MHz clock speed across a 2.3V to 5.5V supply range and is qualified for the -40C to +125C extended industrial temperature range. Key differentiating features include the on-chip Peripheral Pin Select (PPS) for flexible signal routing, an intelligent analog pipeline with auto-acquisition ADC, and Microchip's eXtreme Low Power (XLP) technology for battery-friendly operation. The "K42" family is positioned as an upgrade to older PIC18F "K22" and "K40" devices, providing a richer CIP set without raising cost or power consumption. According to the Microchip datasheet, the device supports up to 36 digital I/O pins depending on package, and includes up to four 16-bit timers, two I2C, two SPI, and one or more UART interfaces. Typical applications for the PIC18F46K42-E/P include industrial control, sensor conditioning with on-chip op-amp-free analog signal chains, low-power IoT edge nodes, motor control with FOC or trapezoidal commutation, and consumer appliances. The Extended (E) temperature grade and through-hole PDIP package make it especially attractive for prototype, hobbyist, and rugged-environment designs where socketed parts are preferred. When designing with this MCU, allocate sufficient decoupling on VDD/AVDD pins (100 nF per pin plus bulk) and follow Microchip's emulator/debugger pinout guidance for ICSP. The CIPs allow many functions to run while the CPU is in sleep, making the part a strong fit for battery-powered applications.

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PIC18F46K42-I/ML

PIC18F46K42-I/ML - 8-Bit 64MHz 64KB Flash MCU | Microchip

The Microchip PIC18F46K42-I/ML is an 8-bit PIC XLP microcontroller with 64KB Flash, 4KB RAM, and 1KB EEPROM, operating at up to 64MHz, housed in a 44-pin QFN (8x8mm) package. It belongs to the PIC18FxxK42 family of highly integrated, low-power microcontrollers featuring the XLP (eXtreme Low Power) technology suite, which delivers deep-sleep currents below 50 nA while retaining critical peripherals and RAM state. A microcontroller (MCU) is a single-chip computer containing a CPU, non-volatile program memory (Flash), volatile data memory (RAM), and a rich set of on-chip peripherals such as ADCs, timers, communication interfaces, and digital logic. The PIC18F architecture extends the classic PIC16 instruction set with 16-bit program word support, a hardware multiplier, and a linear program memory space up to 2 MB, occupying the midpoint of Microchip's 8-bit lineup between the legacy PIC16 and the more powerful dsPIC/PIC32 families. The PIC18FxxK42 generation specifically targets applications that require both high analog integration (12-bit ADC, DAC, op amps, comparators) and aggressive power management. Key features include Vectored Interrupts for deterministic interrupt response, a DMA controller that offloads data movement from the CPU, four 16-bit timers, four 8-bit timers, two I2C, two SPI, two UART, up to 36 PWM channels via the CWG/SMT/PWM peripherals, and a 12-bit ADC2 with up to 35 channels. A 5-bit DAC and two op amps enable closed-loop signal conditioning without external components. Independent peripherals (CIPs) allow timers, PWMs, and the CLC configuration to operate without CPU intervention. Typical applications include industrial control nodes, sensor hubs, low-power IoT edge devices, consumer appliances, lighting controls, USB HID peripherals (using the PPS pin mapping), small medical measurement devices, and battery-powered handheld instruments. The QFN-44 footprint suits compact boards, and the PPS (Peripheral Pin Select) feature lets designers remap peripheral I/O to most digital pins, simplifying PCB routing when the board layout changes. When designing with this part, evaluate the 16KB Flash read-while-write region if the application needs live firmware updates, and pay close attention to the analog supply (AVDD) decoupling when using the ADC2 at high sampling rates. The XLP modes require correct configuration of the VREGPM and RETEN bits to enter the lowest-power states reliably.

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PIC18F46K42-I/PT

PIC18F46K42-I/PT - 64KB Flash XLP 8-bit MCU | Microchip

The Microchip PIC18F46K42-I/PT is an 8-bit PIC18 microcontroller from Microchip's XLP (eXtreme Low Power) family, featuring 64 KB of self-programmable Flash program memory, 4 KB SRAM, 1 KB EEPROM, a 64 MHz maximum CPU clock, and a 12-bit ADC with computation (ADC2), housed in a 44-pin TQFP (10x10 mm) package. It operates from 2.3V to 5.5V and integrates core-independent peripherals (CIPs) such as DMA, vector interrupts, configurable logic cells (CLC), CWG, multiple 16-bit PWMs, comparators, a 5-bit DAC, and serial interfaces (UART, SPI, I2C). An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit data path that integrates a CPU, non-volatile program memory, working RAM, EEPROM, timers, communication peripherals, and I/O on one die. PIC18F-series MCUs sit in the product hierarchy: PIC18F -> 8-bit PIC -> PIC microcontroller -> microcontroller -> embedded system-on-chip. They are widely used where deterministic code execution, low power, and rich analog integration are required. Key features of the PIC18F46K42-I/PT include a 12-bit Differential ADC2 with up to 35 channels and hardware averaging, a 5-bit DAC, multiple 16-bit PWMs with complementary outputs, configurable logic cells (CLC), DMA controllers that move data without CPU intervention, and vectored interrupts with priority levels. The 44-pin TQFP (PT) package offers up to 36 general-purpose I/O pins with 5V tolerance on most digital I/O. The PIC18F46K42 architecture combines a modified Harvard bus, a hardware multiplier, an 8-level hardware stack, vectored interrupts with priority levels, and XLP nanoWatt sleep modes for battery-powered designs. ADC2 includes built-in accumulators and averaging, while CLC blocks allow glue logic implementation in hardware without discrete gates. Typical applications include IoT sensor nodes, motor control (BLDC, stepper, brushed DC), industrial automation, low-power wireless sensor platforms, USB-CDC peripherals, and consumer appliances. The 12-bit ADC2, op-amps, and DAC simplify analog front-end designs without external components. When designing with this device, verify that the supply voltage and oscillator configuration match the application's power profile. The MSSP, CCP/PWM, CWG, and DMA blocks should be planned early to leverage core-independent operation and minimize active current. For low-power battery designs, use the deep-sleep modes combined with RTCC and peripheral wake sources. This page synthesizes distributor pricing, drop-in PIC18FxxK42 family alternatives, and practical design notes not found in the manufacturer datasheet alone.

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PIC18F46K42T-I/ML

PIC18F46K42T-I/ML - 64KB Flash 8-bit MCU | Microchip | XLP 18K

The Microchip PIC18F46K42T-I/ML is an 8-bit PIC18 XLP microcontroller integrating 64KB Flash, 4KB RAM and 1KB EEPROM with a 64MHz core, packaged in a 44-pin QFN (8x8 mm) with exposed thermal pad. It belongs to Microchip's PIC18(L)FxxK42 family that combines XLP (eXtreme Low Power) technology with a rich set of Core Independent Peripherals (CIPs), intelligent analog and large non-volatile memory. An 8-bit microcontroller (MCU) is a programmable semiconductor that integrates a CPU, non-volatile program memory, RAM, and peripherals onto a single die. The PIC18 architecture uses a 16-bit modified Harvard instruction word that delivers roughly 16 MIPS at 64MHz, sitting in the MCU hierarchy as: 8-bit MCU -> microcontroller -> embedded processor -> semiconductor IC. This family targets low-power, mixed-signal embedded designs. Key features include 12-bit ADC2 with Computation and Context Sequencing (eliminates CPU post-processing), 8-bit DAC, fast comparators, 16-bit PWM, DMA controller, Vector Interrupts, Device Information Area (DIA), Memory Access Partition (MAP), and CIPs such as CLC, NCO and ZCD. The device supports 1.8V-5.5V operation with nanoWatt XLP sleep currents below 50 nA in Deep Sleep. The PIC18F46K42T-I/ML uses a 16-bit instruction path with 31-level hardware stack and an internal 64MHz oscillator accurate to +/-2% across -40C to +125C. The 44-QFN exposed pad gives theta_JA around 28 C/W, allowing sustained operation at industrial temperatures without forced airflow. Typical applications include IoT sensor nodes, BLDC/PMSM motor control loops, smart energy metering, USB/HID peripherals and industrial HMI panels. Designers choose it when deterministic real-time response, large analog integration and XLP sleep currents are required without stepping up to a 32-bit ARM core. When designing, allocate the exposed pad (EP) to a continuous ground plane and keep analog traces short. The 12-bit ADC2 with averaging typically achieves 11.5 ENOB at 1 ksps - derate this at higher sampling rates and ensure the AVdd pin is properly decoupled. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes that go beyond the manufacturer datasheet alone.

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PIC18F46K42T-I/MV

PIC18F46K42T-I/MV - 8-bit 64MHz MCU 64KB Flash | Microchip

The Microchip PIC18F46K42T-I/MV is an 8-bit PIC18 microcontroller built on the eXtreme Low-Power (XLP) platform, integrating 64KB of Flash, 4KB of SRAM and 1KB of EEPROM in a 40-pin UQFN (MV) 5x5mm package. It executes instructions at up to 64MHz (16 MIPS) and includes a 12-bit ADC with Computation (ADC2), DAC, comparators, vector interrupts, DMA, Memory Access Partitioning (MAP), and Device Information Area (DIA). The 64KB (32K x 16) Flash is in-system programmable through the ICSP interface. An 8-bit microcontroller (MCU) is a single-chip processor with an 8-bit data bus, optimized for deterministic real-time control at low power and modest cost. Within the embedded hierarchy, an 8-bit MCU sits below 16-bit and 32-bit MCUs in computational throughput but above discrete logic in functional integration. The PIC18 family uses a Harvard RISC architecture with hardware multiplier, intended for mixed-signal embedded designs that demand small code footprint, low active and sleep currents, and rich on-chip peripherals. Key features of this part include the 12-bit ADC2 (automated averaging, burst-averaging, threshold-triggered acquisition), 10-bit PWM with edge alignment, complementary waveform generation and variable dead-band, plus multiple communication peripherals: UART with protocol support, SPI, I2C with SMBus/PMBus compatibility, and CAN-FD ready I/O. The device also implements Configurable Logic Cells (CLC), a Peripheral Pin Select (PPS) matrix, and zero-cross detection on select pins. Architecturally, the K42 family extends the K40 line with hardware DMA, expanded CLC blocks, more vectored interrupt sources, and Memory Access Partitioning for bootloader/IP protection. The XLP core supports nanoWatt XLP sleep currents with multiple low-power modes (Sleep, Idle, Doze, PMD), allowing the device to consume microamps in standby while peripherals continue to operate via DMA. Typical applications include industrial sensor nodes, low-power IoT edge devices, automotive body and HVAC controls (non-safety), home appliances, consumer HMI panels, and USB-to-UART bridges. The wide 2.3V to 5.5V VDD range and 64MHz performance also make it suitable for brushed DC motor control and small BLDC commutation loops. When designing with this MCU, enable the Memory Access Partitioning early to lock bootloader regions, place the decoupling capacitor network (100nF + 10uF bulk) within 3mm of VDD/AVDD, and verify the PPS mapping for your chosen pinout. The UQFN-40 thermal pad must be soldered to a continuous ground pour for specified electrical and thermal performance. This page synthesizes distributor pricing, parametric alternatives, and practical design notes not found in the manufacturer datasheet, providing a side-by-side comparison against same-family K40/K42 MCUs and cross-vendor 8-bit options.

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PIC18F46K22-E/ML - 8-bit 48MHz 64KB Flash MCU QFN-44 | Microchip

PIC18F46K22-E/MV - 8-Bit 64KB Flash MCU, 40-UQFN | Microchip

PIC18F46K22-E/P - 8-bit 64KB Flash XLP MCU 40-PDIP | Microchip

PIC18F46K22-E/PT - 64KB Flash 8-bit XLP MCU | Microchip

PIC18F46K22-I/ML - 64KB Flash 8-bit MCU 44-QFN | Microchip

PIC18F46K22-I/MV - 8-bit 64MHz 64KB Flash MCU | Microchip

PIC18F46K22-I/P - 8-bit 64MHz 64KB Flash MCU 40-PDIP | Microchip

PIC18F46K22-I/PT - 64KB Flash 8-bit XLP MCU 44-TQFP | Microchip

PIC18F46K22T-I/PT - 8-bit 64MHz 64KB Flash XLP MCU | Microchip

PIC18F46K40-E/ML - 8-Bit 64KB Flash MCU, 64MHz, 44-QFN | Microchip

PIC18F46K40-E/MV - 8-Bit 64MHz MCU 64KB Flash 40-UQFN

PIC18F46K40-E/P - 8-Bit 64MHz XLP MCU, 64KB Flash, 40-PDIP

PIC18F46K40-I/ML - 64KB Flash, 8-Bit XLP MCU, 44-QFN | Microchip

PIC18F46K40-I/MV - 64KB Flash 8-bit MCU, 40-UQFN | Microchip

PIC18F46K40-I/P - 64KB Flash, 8-Bit MCU, 40-PDIP | Microchip

PIC18F46K40T-E/MVVAO - 64KB Flash 8-bit MCU w/ XLP | Microchip

PIC18F46K40T-I/ML - 64KB Flash 8-bit MCU, 64MHz, 44-VQFN | Microchip

PIC18F46K40T-I/PT - 64KB Flash 8-bit MCU 64MHz | Microchip

PIC18F46K42-E/ML - 8-Bit 64MHz MCU 64KB Flash 44-QFN | Microchip

PIC18F46K42-E/P - 64KB Flash 8-Bit MCU | Microchip 40-PDIP

PIC18F46K42-I/ML - 8-Bit 64MHz 64KB Flash MCU | Microchip

PIC18F46K42-I/PT - 64KB Flash XLP 8-bit MCU | Microchip

PIC18F46K42T-I/ML - 64KB Flash 8-bit MCU | Microchip | XLP 18K

PIC18F46K42T-I/MV - 8-bit 64MHz MCU 64KB Flash | Microchip