PIC18LF46K42T-I/PT - 8-bit 64MHz 64KB Flash MCU 44-TQFP | Microchip
Teilenummer: PIC18LF46K42T-I/PT ✓ Aktiv| Menge | Stückpreis | Gesamt |
|---|---|---|
| 1 | $3.42 | $3,42 |
| 10 | $3.07 | $30,70 |
| 100 | $2.65 | $265,00 |
| 500 | $2.31 | $1.155,00 |
| 1.000 | $2.05 | $2.050,00 |
PIC18LF46K42T-I/PT Übersicht
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash), working memory (RAM), non-volatile data storage (EEPROM), and a rich set of peripherals such as timers, ADC, DAC, communication interfaces, and GPIO into one IC. Within the broader taxonomy, an MCU belongs to the family of embedded processors -> microcontrollers -> 8-bit microcontrollers. The PIC18LF46K42 sits inside Microchip's XLP (eXtreme Low Power) family, designed for applications where nanoWatt sleep currents and active-mode efficiency both matter; the same family also includes complementary parts such as PIC18F46K42 with 2.3V-5.5V VDD range.
Key features of the PIC18LF46K42T-I/PT include 64 KB self-programmable Flash, 4 KB SRAM, 1 KB EEPROM, a 12-bit ADC with computation, multiple DMA-capable peripherals, and configurable logic cells. The integrated 64 MHz internal oscillator eliminates an external crystal in many designs, and the device supports Core Independent Peripherals (CIPs) that offload tasks from the CPU. The 44-TQFP package exposes 36 GPIO lines, ample for human-machine interfaces, sensor aggregation, or motor control front-ends.
Architecturally, the PIC18FxxK42 family uses an enhanced Harvard architecture with a 16-bit instruction word and 8-bit data path, delivering deterministic interrupt latency and efficient C compilation under MPLAB XC8. The peripheral set includes multiple UART, SPI, I2C, PWM, comparator, and op-amp modules, plus a 5-bit DAC and zero-cross detection. DMA channels service ADC and communication peripherals, enabling the CPU to remain in sleep until meaningful events occur - a key XLP differentiator.
Typical applications include IoT sensor nodes, home automation controllers, battery-powered medical wearables, industrial telemetry, white-goods user interfaces, and low-cost BLDC/PMSM motor control boards. The combination of XLP sleep modes (down to ~50 nA typical) and DMA-driven peripherals makes the device especially suited to energy-harvesting or replaceable-battery products where quiescent current dominates total energy budget, plus AEC-Q100 variants exist in the F-series for automotive body and chassis ECUs.
When designing with this MCU, ensure the configuration bits are correctly set for the chosen oscillator source and brown-out reset threshold; Microchip's MPLAB Code Configurator (MCC) generates the initialization code automatically. Place a 100 nF decoupling capacitor on every VDD/VDDIOX pair, keep analog reference traces short, and reserve the ICSP pins (PGC/PGD) for in-circuit programming access.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found on the manufacturer datasheet, giving engineers a single reference for selection, sourcing, and PCB bring-up of this Microchip 8-bit XLP MCU.
Drop-in-Alternativen für PIC18LF46K42T-I/PT – gleiches Gehäuse, Pin-kompatibel. Bauteile mit anderem Gehäuse, die eine PCB-Überarbeitung erfordern, sind ausgeschlossen.
Varianten dieser Serie
Modelle derselben Serie, die drop-in-kompatibel sind mit PIC18LF46K42T-I/PT (gleiche Bauform und Footprint) – abweichend in ADC, Package, DAC, EEPROM, Program Memory (Flash).
Schnellvergleichstool – Wählen Sie Alternativbauteile für den Direktvergleich:
PIC18F46K42T-I/PT
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
PIC18LF46K42-E/PT
✅ Drop-In✓ Auf Lager
$1.72 / Stück
Datenblatt ansehen →PIC18LF46K42-I/PT
✅ Drop-In✓ Auf Lager
$2.4 / Stück
Datenblatt ansehen →PIC18LF46K42-E/PT
✅ Drop-In ⚠️ Spezifikationen ungeprüft✓ Auf Lager
$1.72 / Stück
Datenblatt ansehen →PIC18F46Q10-I/PT
✅ Drop-In ⚠️ Spezifikationen ungeprüft✓ Auf Lager
$1.55 / Stück
Datenblatt ansehen →PIC18LF46K42T-I/PT Grenzwerte & elektrische Eigenschaften
| Core Processor | PIC |
| Core Size | 8-bit |
| Maximum CPU Speed | 64 MHz |
| Program Memory (Flash) | 64 KB (32K x 16) |
| RAM | 4 KB |
| EEPROM | 1 KB |
| Operating Voltage Range (LF) | 1.8 V to 3.6 V |
| Betriebstemperaturbereich | -40C to +85C (Industrial) |
| Gehäuse | 44-TQFP (10x10 mm) |
| Montageart | Surface Mount |
| GPIO Count | 36 |
| ADC | 12-bit with computation |
| DAC | 5-bit |
| Communication | I2C, SPI, UART/USART, LINbus |
| Internal Oscillator | Yes (up to 64 MHz) |
| DMA Channels | Yes (multiple DMA-capable peripherals) |
| Core Independent Peripherals | Yes (CIPs) |
| XLP Low-Power Sleep | ~50 nA typical |
| Compliance | RoHS compliant |
PIC18LF46K42T-I/PT 44-tqfp (10x10 mm) Pinbelegungsleitfaden
Pinbelegung für PIC18LF46K42T-I/PT (44-tqfp (10x10 mm)-Gehäuse). Dieser digitale IC umfasst GPIO, Kommunikationsschnittstellen (UART, SPI, I2C) und Versorgungspins. Alternative Pin-Funktionen und Konfigurationsoptionen entnehmen Sie dem Herstellerdatenblatt. Unverzichtbar für Embedded-System-Design und PCB-Layout.
Keine detaillierten Pinbelegungsdaten verfügbar für PIC18LF46K42T-I/PT.
Siehe die Datenblatt für die vollständige Pin-Konfiguration.
Typische Anwendungen
PIC18LF46K42T-I/PT ist geeignet für 7 Anwendungs: Battery-Powered IoT Sensor Nodes, Home Automation HMI Controllers, Wearable Health Monitoring Devices, Industrial Telemetry and Remote Monitoring, White-Goods and Appliance Control Boards, BLDC / PMSM Motor Control Front-Ends, Automotive Body and Interior Modules.
Battery-Powered IoT Sensor Nodes
The PIC18LF46K42T-I/PT is purpose-built for IoT sensor nodes operating from 1.8 V to 3.6 V supplies such as a single CR2032 coin cell, two AA cells, or a regulated 3.3 V rail. Its 64 MHz CPU executes sensor-fusion algorithms quickly before returning to XLP sleep, where its ~50 nA typical sleep current draws essentially no energy between transmissions. The 12-bit ADC-with-computation plus DMA lets the MCU wake on threshold crossings while the core remains powered down, and the 4 KB SRAM accommodates modest protocol stacks like a LoRaWAN or BLE-beacon packet. Compared to a 32-bit Cortex-M0+ alternative at the same price point, the PIC18LF46K42T-I/PT adds deterministic interrupt latency and BOM-friendly 1.8 V operation that lets a primary cell drive the design without a boost regulator.
Empfohlen
Home Automation HMI Controllers
In home-automation thermostats, dimmers, and appliance user-interface boards, the PIC18LF46K42T-I/PT delivers enough GPIO (36 lines) to drive keypads, RGB indicators, character or graphic displays, and multiple UART/SPI/I2C peripherals without an I/O expander. Its DMA channels support TFT display refresh offloaded from the CPU, freeing the core for user-input handling and the 12-bit ADC for temperature or light sensing. The LF variant's 1.8-3.6 V range matches 3.3 V system rails typically used in solid-state lighting and HVAC controllers, simplifying the power tree. Microchip's MCC code generator produces the keypad-scanning CIP and PWM dimming logic from configuration selections, cutting firmware bring-up time.
Empfohlen
Wearable Health Monitoring Devices
Wearable medical and fitness devices require microcontrollers that can run sensor processing, perform DSP-filtering of heart-rate or SpO2 signals, and still last days on a small Li-ion battery. The PIC18LF46K42T-I/PT balances this with a 64 MHz core plus a hardware-math-accelerator-capable peripheral set, while XLP sleep keeps quiescent current under microamps when the device is between measurements. The 12-bit ADC runs at sample rates suitable for PPG sensors, and the integrated op-amps and comparators condition the analog signal chain directly, removing external components and shrinking wearable PCBs. The 64 KB Flash stores DSP coefficient tables and bootloader code for OTA firmware updates over the UART.
Empfohlen
Industrial Telemetry and Remote Monitoring
Industrial telemetry sensors - tank-level, pressure, flow, or environmental stations - need reliable 1.8-3.6 V operation that survives long battery service intervals over wide temperature swings. The PIC18LF46K42T-I/PT, especially the PIC18LF46K42-E/PT variant for -40C to +125C duty, allows a single MCU to manage analog sensing through the 12-bit ADC, hold calibration data in the 1 KB EEPROM, and transmit via UART-connected modems or LINbus to upstream gateways. Its DMA-driven ADC means the core sleeps while multiple channel sweeps occur. For mains-powered sensor hubs the PIC18F46K42T-I/PT (2.3-5.5 V variant) preserves the same firmware, allowing a single design to span battery or powered installations.
Empfohlen
White-Goods and Appliance Control Boards
White-goods appliances such as washing machines, dishwashers, refrigerators, and induction cooktops use 8-bit microcontrollers to drive user interfaces, read temperature sensors, and switch triac-controlled loads at low PWM rates. The PIC18LF46K42T-I/PT supplies 36 GPIO plus 5-bit DAC and PWM timers to handle multiple load actuators directly, while CIP peripherals (configurable logic cells, zero-cross detect) implement triac gating without burdening the CPU. The LF variant matches appliance 3.3 V rails powered from rectified mains-derived supplies. For higher-voltage 5 V boards the PIC18F46K42T-I/PT variant provides identical pins and firmware, allowing a single PCB to be populated differently across markets.
Empfohlen
BLDC / PMSM Motor Control Front-Ends
Low-cost BLDC and PMSM motor controllers for small appliances, fans, and pumps often use an 8-bit MCU to generate commutated PWM, read back-EMF zero-cross signals, and provide speed-control I/O. The PIC18LF46K42T-I/PT provides multiple PWM channels, zero-cross detection, fast ADC triggering synchronized to the PWM, and DMA that streams conversion results into memory while the CPU handles the FOC or trapezoidal commutation math. Its 64 MHz execution supports modest algorithms at the 16 MIPS-per-MHz boundary required for sensorless BLDC startup ramp. The optional LF (1.8-3.6 V) variant suits 3.3 V driver stages paired with gate-driver ICs.
Empfohlen
Automotive Body and Interior Modules
Despite the LF industrial grade, the wider PIC18F46K42 family - including AEC-Q100 qualified F-series variants - serves automotive body modules such as interior lighting controllers, seat-position sensors, mirror controls, and HVAC damper actuators. The PIC18LF46K42T-I/PT fits development and pre-production where industrial temperature is acceptable; for series production the F-version with the higher voltage range is required. Peripheral-rich connectivity (LINbus-friendly UART, SPI for HUD links, 12-bit ADC for current sense) and Core Independent Peripherals allow deterministic response to LIN frames within millisecond budgets. AEC-Q100 grades in the K42 family deliver proven automotive reliability per Microchip's qualification documents.
Empfohlen
Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für PIC18LF46K42T-I/PT – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | PIC18F46K42T-I/PT | PIC18LF46K42-E/PT | PIC18LF46K42-I/PT | PIC18F46Q10-I/PT |
|---|---|---|---|---|---|
| Package | 44-TQFP (10x10 mm) | 44-TQFP (10x10) - same | 44-TQFP (10x10) - same | 44-TQFP (10x10) - same | 44-TQFP (10x10) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Operating Voltage | 1.8 V to 3.6 V (LF) | 2.3 V to 5.5 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 2.3 V to 5.5 V |
| Temperature Grade | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +125C (Extended) | -40C to +85C (Industrial) | -40C to +85C (Industrial) |
| CPU Speed | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz |
| Flash Memory | 64 KB | 64 KB | 64 KB | 64 KB | 64 KB |
| Packaging Format | Tape & Reel (T suffix) | Tape & Reel | Tape & Reel | Tray | Tape & Reel |
| Core Architecture | PIC18 enhanced 8-bit Harvard | PIC18 enhanced 8-bit Harvard | PIC18 enhanced 8-bit Harvard | PIC18 enhanced 8-bit Harvard | PIC18 Q10 series 8-bit Harvard |
Wichtigste Unterscheidungsmerkmale
- Wide 1.8 V to 3.6 V supply range for battery-only designs (vs. PIC18F46K42T-I/PT)
- Best-in-class XLP sleep current for a 64 MHz 8-bit MCU (vs. PIC18F46Q10-I/PT)
- Drop-in alternate available at higher temperature grade (vs. PIC18LF46K42-E/PT)
Designhinweise
Estimate: at 64 MHz active and 3.3 V supply, the typical IDD is documented in the PIC18FxxK42 family datasheet at the relevant electrical characteristics table. Always add a 100 nF decoupling capacitor on every VDD/VDDIOX pair plus a bulk 1-10 uF near the MCU. Use the LF variant (this part) when supply is 1.8-3.6 V; otherwise choose the F-variant. The XLP sleep mode requires RTC, CPS, and PMD configuration to truly reach ~50 nA - default reset state has more peripherals active than needed.
Route the ICSP pins PGC/PGD and MCLR/VPP with through-holes or test pads so MPLAB Snap / PICkit can attach for in-circuit programming, even on a compact SMT board. Avoid running high-current motor traces or triac switching near the VDD pins or analog inputs (ANx, AVSS) to keep ADC reads clean. Place a 4.7 kohm pull-up on MCLR unless the application note section justifies the internal weak pull-up alternative (not recommended for production).
Do not apply 5 V to any I/O pin on the LF variant - the absolute-maximum VDD plus 0.3 V is 4.0 V. Mixing the LF and F variants on the same firmware without re-validating the voltage node can latch up the LF silicon. The LDO regulator for the MCU core (VCAP pin, pin 39 on 44-TQFP) needs at least 0.1 uF in parallel with 1 uF per the datasheet; omitting the cap will cause erratic reset behavior and CIP malfunctions.
When driving long SPI buses to peripherals such as flash or displays, add 100 ohm series resistors at the clock and MOSI outputs to dampen reflections. The I2C bus requires pull-ups sized for the bus capacitance; with the LF variant at 1.8 V use 1k-2kohm to keep rise times under spec at 400 kHz Fast Mode. DMA configuration for the ADC must come before enabling the ADC interrupt; reversing this prevents the DMA controller from steering samples away from the interrupt handler.
Compliance-Informationen
RoHS compliant per distributor environmental data on DigiKey and Mouser. Industrial -40C to +85C temperature grade. AEC-Q100 qualified versions exist in the F-series K42 family for automotive; this LF I-grade part is targeted at industrial / consumer. Lead-free (Pb-free) per PT package suffix.