PIC18LF47K42-E/P - 8-bit 64MHz 128KB Flash MCU | Microchip
N.º da peça: PIC18LF47K42-E/P ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $4.02 | $4,02 |
| 10 | $3.75 | $37,50 |
| 100 | $3.3 | $330,00 |
| 500 | $2.85 | $1.425,00 |
| 1.000 | $2.45 | $2.450,00 |
PIC18LF47K42-E/P Visão geral
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash), data memory (RAM), non-volatile storage (EEPROM), and a rich set of peripherals. The PIC18 family is built around an enhanced 8-bit Harvard RISC core with hardware multiplier, interrupt controller, and peripheral pin select (PPS) that maps digital peripherals to physical I/O pins at runtime. Within the broader taxonomy, the PIC18LF47K42 sits in the 8-bit MCU tier of the Microcontroller -> Microcomputer -> Embedded System hierarchy and is one of Microchip's higher-density XLP parts.
Key differentiating features include 12-bit ADC with computation (ADC2) for oversampling and automated threshold detection, vector interrupts for deterministic interrupt latency, Direct Memory Access (DMA) controller that moves data between peripherals and memory without CPU intervention, Peripheral Pin Select (PPS) for flexible I/O mapping, multiple PWM modules, on-chip DAC, comparators, and a 32 MHz internal oscillator. The XLP designation adds nanoWatt XLP technology with sleep currents in the nanoampere range, ideal for always-on IoT sensors that spend most of their life in sleep.
Typical applications include industrial sensor nodes, battery-powered IoT edge devices, home automation controllers, low-power remote controls, motor-control signal conditioning front-ends, and portable medical monitoring. The wide memory and rich analog/digital peripherals also suit mains-powered appliances (white goods) where firmware complexity has outgrown lower-tier PIC16 parts.
When designing with this part, ensure the LF voltage range (1.8 V to 3.6 V) is observed - using 5 V will damage the LF silicon. For prototypes, the PIC18LF47K42-I/P (industrial temperature grade) is interchangeable electrically and pin-compatible; the -E/P suffix designates the extended (-40 C to +125 C) operating temperature grade. Programming is supported by MPLAB X IDE, MPLAB XC8 compiler, and PICkit or ICD debug probes.
This page synthesizes distributor stock, parametric alternatives, and practical design notes that are not found in the manufacturer datasheet alone, including thermal behavior guidance and PPS mapping tips drawn from Microchip application notes.
Alternativas drop-in para PIC18LF47K42-E/P — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com PIC18LF47K42-E/P (mesmo formato e footprint) — diferindo em ADC, Package, Program Memory (Flash), DAC, Mounting Type.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
PIC18LF47K40-E/PT
✅ Drop-In✓ Em estoque
$2.43 / unidade
Ver ficha técnica →PIC18LF46K42-E/P
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
PIC18LF47K40-I/PT
✅ Drop-In✓ Em estoque
$2.65 / unidade
Ver ficha técnica →PIC18LF45K42-E/P
✅ Drop-In✓ Em estoque
$1.99 / unidade
Ver ficha técnica →PIC18LF46K40-I/PT
✅ Drop-In✓ Em estoque
$2.1 / unidade
Ver ficha técnica →PIC18LF47K42-E/P Classificações máximas e características elétricas
| Core | PIC 8-bit RISC |
| Core Family | PIC18F (enhanced 8-bit Harvard) |
| Operating Frequency (Max) | 64 MHz |
| Program Memory (Flash) | 128 KB (64K x 16) |
| Data Memory (RAM) | 8 KB |
| Supply Voltage (VDD) | 1.8 V to 3.6 V (LF variant) |
| Temperatura de operação | -40 C to +125 C (E suffix, extended grade) |
| Encapsulamento | 40-pin PDIP (DIP-40, 0.600 inch / 15.24 mm) |
| Tipo de montagem | Through-Hole |
| ADC | 12-bit ADC2 with computation |
| DAC | Yes (on-chip) |
| Comparators | Yes |
| DMA Controller | Yes |
| Peripheral Pin Select (PPS) | Yes |
| Vector Interrupts | Yes |
| Low-Power Technology | nanoWatt XLP |
| Status RoHS | Compliant |
| Lead-Free | Yes |
Configuração de pinos do PIC18LF47K42-E/P
| Pino 1 | MCLR/VPP — Master Clear (reset) input / programming voltage |
| Pino 2 | RA0 — PORTA bit 0 / analog / digital I/O (PPS) |
| Pino 3 | RA1 — PORTA bit 1 / analog / digital I/O (PPS) |
| Pino 4 | RA2 — PORTA bit 2 / analog / digital I/O (PPS) |
| Pino 5 | RA3 — PORTA bit 3 / analog / digital I/O (PPS) |
| Pino 6 | RA4 — PORTA bit 4 / analog / digital I/O (PPS) |
| Pino 7 | RA5 — PORTA bit 5 / analog / digital I/O (PPS) |
| Pino 8 | RA6 — PORTA bit 6 / analog / digital I/O (PPS) |
| Pino 9 | RA7 — PORTA bit 7 / analog / digital I/O (PPS) |
| Pino 10 | RE0 — PORTE bit 0 / analog / digital I/O (PPS) |
| Pino 11 | VDD — Positive supply voltage (1.8 V to 3.6 V for LF) |
| Pino 12 | VSS — Ground reference |
| Pino 13 | RB0 — PORTB bit 0 / analog / digital I/O (PPS) |
| Pino 14 | RB1 — PORTB bit 1 / analog / digital I/O (PPS) |
| Pino 15 | RB2 — PORTB bit 2 / analog / digital I/O (PPS) |
| Pino 16 | RB3 — PORTB bit 3 / analog / digital I/O (PPS) |
| Pino 17 | RB4 — PORTB bit 4 / analog / digital I/O (PPS) |
| Pino 18 | RB5 — PORTB bit 5 / analog / digital I/O (PPS) |
| Pino 19 | RB6 — PORTB bit 6 / ICS PGC / digital I/O (PPS) |
| Pino 20 | RB7 — PORTB bit 7 / ICS PGD / digital I/O (PPS) |
| Pino 21 | RC0 — PORTC bit 0 / analog / digital I/O (PPS) |
| Pino 22 | RC1 — PORTC bit 1 / analog / digital I/O (PPS) |
| Pino 23 | RC2 — PORTC bit 2 / analog / digital I/O (PPS) |
| Pino 24 | RC3 — PORTC bit 3 / analog / digital I/O (PPS) |
| Pino 25 | RC4 — PORTC bit 4 / analog / digital I/O (PPS) |
| Pino 26 | RC5 — PORTC bit 5 / analog / digital I/O (PPS) |
| Pino 27 | RC6 — PORTC bit 6 / analog / digital I/O (PPS) |
| Pino 28 | RC7 — PORTC bit 7 / analog / digital I/O (PPS) |
| Pino 29 | RD0 — PORTD bit 0 / digital I/O (PPS) |
| Pino 30 | RD1 — PORTD bit 1 / digital I/O (PPS) |
| Pino 31 | VSS — Ground reference |
| Pino 32 | VDD — Positive supply voltage (1.8 V to 3.6 V for LF) |
| Pino 33 | RD2 — PORTD bit 2 / digital I/O (PPS) |
| Pino 34 | RD3 — PORTD bit 3 / digital I/O (PPS) |
| Pino 35 | RD4 — PORTD bit 4 / digital I/O (PPS) |
| Pino 36 | RD5 — PORTD bit 5 / digital I/O (PPS) |
| Pino 37 | RD6 — PORTD bit 6 / digital I/O (PPS) |
| Pino 38 | RD7 — PORTD bit 7 / digital I/O (PPS) |
| Pino 39 | RE1 — PORTE bit 1 / analog / digital I/O (PPS) |
| Pino 40 | RE2 — PORTE bit 2 / analog / digital I/O (PPS) |
Aplicações típicas
PIC18LF47K42-E/P é adequado para 6 aplicaçãos: Battery-Powered IoT Sensor Node, Industrial Process Control Front-End, Home Appliance Control Board, Portable Medical Monitoring Device, Automotive Body Electronics (Non-Safety), Remote Control and HMI Controller.
Battery-Powered IoT Sensor Node
The PIC18LF47K42-E/P is well-suited to battery-powered wireless sensor nodes because its 1.8 V to 3.6 V LF voltage range lets it run directly from a single Li-ion cell (3.0 V to 4.2 V via LDO) or 2x AA alkaline cells (2.0 V to 3.2 V). Its 64 MHz execution speed supports faster protocol stacks (LoRaWAN, BLE HCI, MQTT-SN), and the 12-bit ADC2 with computation performs oversampling and threshold detection without waking the CPU. The DMA controller offloads I2C/SPI sensor reads into RAM autonomously, letting the CPU stay in sleep - combined with nanoWatt XLP sleep currents in the nanoampere range, the part can extend coin-cell battery life from months to years in duty-cycled sensing applications.
Recomendado
Industrial Process Control Front-End
For industrial 4 mA to 20 mA loop-powered sensor conditioning or programmable logic controller front-ends, the PIC18LF47K42-E/P provides the peripheral density required: multiple PWM channels for actuator drive, on-chip comparators for threshold detection, the 12-bit ADC2 for transducer readout, and vector interrupts for deterministic response time. The -40 C to +125 C extended temperature (E suffix) rating handles the harsh thermal environment of factory floor enclosures. The 40-pin PDIP package is through-hole, which is preferred for hand-reworkable industrial control boards that may need field service.
Recomendado
Home Appliance Control Board
White-goods appliances (washing machines, dishwashers, refrigerators, microwave ovens) traditionally use 8-bit MCUs and the PIC18LF47K42-E/P fits this market well. Its 128 KB Flash handles complex user-interface state machines and motor-control algorithms, while the 8 KB RAM supports display buffers and protocol stacks. The on-chip PWM modules drive triac-controlled heater elements and brushless DC fan motors, the on-chip comparators sense zero-crossing for AC line synchronization, and the extended temperature grade (E) tolerates the high-ambient environment inside appliance cabinets. LF voltage range (1.8 V to 3.6 V) suits 3.3 V-only designs.
Recomendado
Portable Medical Monitoring Device
Portable medical devices such as pulse oximeters, blood-pressure cuffs, glucose meters, and wearable health patches benefit from the PIC18LF47K42-E/P's low-power XLP technology, deterministic interrupt response (vector interrupts), and rich analog peripherals. The 12-bit ADC2 with computation can perform R-to-R peak detection and heart-rate averaging in hardware, offloading the CPU. Battery-powered operation is supported by the 1.8 V to 3.6 V LF voltage range. The 40-pin PDIP package is breadboard-friendly for prototype development before transitioning to a smaller surface-mount variant for production.
Recomendado
Automotive Body Electronics (Non-Safety)
For non-safety automotive applications such as interior lighting controllers, seat-position memory modules, body control modules for non-critical loads, and HVAC panel controllers, the PIC18LF47K42-E/P provides the deterministic interrupt latency and PWM channels needed. Note that for AEC-Q100 qualified automotive designs, Microchip offers PIC18F47K42 variants with the -Q1 suffix; the -E/P temperature grade on this part covers -40 C to +125 C which is adequate for cabin environments. The LF voltage range suits 3.3 V automotive rails. CAN/LIN networking requires an external transceiver.
Recomendado
Remote Control and HMI Controller
The PIC18LF47K42-E/P suits advanced remote controls and human-machine interface controllers that need to drive LCD or LED displays, scan keypads, run infrared or RF protocol stacks, and enter deep sleep between button presses. The PPS (peripheral pin select) feature lets designers remap UART, SPI, and I2C to different pins without board rework, accelerating HMI prototyping. The 8 KB RAM comfortably buffers display updates, and the DMA controller autonomously refreshes the display without CPU intervention, preserving battery life in handheld remotes.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para PIC18LF47K42-E/P — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | PIC18LF47K40-E/P | PIC18LF46K42-E/P | PIC18LF47K40-I/P | PIC18LF45K42-E/P | PIC18LF46K40-I/P |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | DIP-40 (15.24 mm) | DIP-40 - same | DIP-40 - same | DIP-40 - same | DIP-40 - same | DIP-40 - same |
| Flash Memory | 128 KB | 64 KB (-50%) | 64 KB (-50%) | 64 KB (-50%) | 32 KB (-75%) | 64 KB (-50%) |
| RAM | 8 KB | 8 KB | 8 KB | 8 KB | 4 KB (-50%) | 8 KB |
| Max Frequency | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz |
| Supply Voltage | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V |
| Temperature Grade | Extended (-40 C to +125 C) | Extended (-40 C to +125 C) | Extended (-40 C to +125 C) | Industrial (-40 C to +85 C) | Extended (-40 C to +125 C) | Industrial (-40 C to +85 C) |
| Peripherals (DMA/PPS) | Yes (K42 family) | Yes (K42 family) | Yes (K42 family) | Yes (K42 family) | Yes (K42 family) | No DMA / older PPS (K40 family) |
| ADC Architecture | 12-bit ADC2 with computation | 12-bit ADC2 with computation | 12-bit ADC2 with computation | 12-bit ADC2 with computation | 12-bit ADC2 with computation | 10-bit ADC (older K40 family) |
Principais diferenciais
- Highest Flash density in K42 family (128 KB) (vs PIC18LF46K42-E/P)
- Extended temperature grade for industrial/automotive cabin (vs PIC18LF47K40-I/P)
- K42 family modern peripherals (DMA + ADC2 compute + PPS) (vs PIC18LF46K40-I/P)
Notas de projeto
The PIC18LF47K42-E/P LF silicon operates strictly from 1.8 V to 3.6 V. Applying 5 V to VDD will damage the part. If your design must accept a 5 V supply, choose the PIC18F47K42-E/P variant instead (2.3 V to 5.5 V) - same pinout, same peripherals. Add a 100 nF ceramic decoupling capacitor close to each VDD/VSS pair (pins 11/12 and 31/32 on DIP-40) and a bulk 10 uF tantalum or ceramic on the main supply rail to suppress switching transients from PWM-driven inductive loads.
When using the Peripheral Pin Select (PPS) feature, configure PPS mappings in firmware at startup before enabling the corresponding peripheral. PPS remapping is one-way at runtime; reversing a mapping requires a brief peripheral disable. Route ICSP pins RB6 (PGC) and RB7 (PGD) to a dedicated 6-pin or 2x3-pin header for in-circuit programming and debugging with PICkit or ICD probes. Do not put capacitors on the ICSP clock/data lines that would slow the programming edges below specification.
Estimated: At 64 MHz execution, the PIC18LF47K42-E/P core draws approximately 15 mA active current per Microchip datasheet DS40001974C typical figures. With VDD at 3.3 V, power dissipation is ~50 mW. The DIP-40 plastic package has a thermal resistance theta_JA around 50 C/W in still air, yielding a junction temperature rise of only ~2.5 C above ambient - no heatsink required. However, in enclosed industrial enclosures with no airflow, derate the maximum ambient temperature by 10 C to 15 C to keep the junction below the +125 C absolute maximum.
Three common PIC18LF47K42 design mistakes to avoid: (1) Forgetting to clear the PPS unlock register sequence - PPS writes are silently ignored without the correct unlock sequence. (2) Enabling DMA without first configuring the DMA source/destination address and mode registers - DMA silently does nothing if not fully configured. (3) Using the F (5 V) variant firmware on the LF silicon - code that works on PIC18F47K42 at 5 V may execute incorrectly or damage the LF part. Always verify the silicon revision (F vs LF) marked on the package against your BOM.
Informações de conformidade
RoHS and REACH compliance confirmed by Microchip product page. Lead-free (Pb-free) per Microchip packaging marking. AEC-Q100 qualification is NOT held by the -E/P grade - for AEC-Q100 qualified automotive variants, request the PIC18F47K42-Q1 family. Halogen-free status not explicitly published for [DATA_NEEDED].
