PIC18LF24K50-I/SO - 16KB Flash, 48MHz 8-bit MCU | Microchip
N.º da peça: PIC18LF24K50-I/SO ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $2.6 | $2,60 |
| 10 | $2.34 | $23,40 |
| 100 | $2.08 | $208,00 |
| 500 | $1.86 | $930,00 |
| 1.000 | $1.65 | $1.650,00 |
PIC18LF24K50-I/SO Visão geral
A microcontroller (MCU) is a single-chip computer containing a CPU core, program memory (Flash/ROM), data memory (RAM), and programmable peripherals. The PIC® 8-bit architecture belongs to the broader category of embedded microcontrollers, sitting under the hierarchy: microcontroller -> embedded processor -> semiconductor IC. The 'LF' prefix designates low-voltage operation; the 'K50' sub-family adds nanoWatt XLP™ extreme-low-power technology and integrated USB; the '18' indicates the 16-bit instruction width with 8-bit data path typical of PIC18 devices.
Key differentiating features include the integrated USB 2.0 full-speed transceiver (12 Mbps), 25-channel 10-bit ADC with auto-acquisition, 2 CCP/ECCP modules, 2 MSSP (I²C/SPI) modules, 1 enhanced USART with LIN support, and nanoWatt XLP sleep currents as low as 20 nA typical. The 28-pin SOIC package provides ample I/O while remaining hand-solderable, well-suited to prototype and low-volume production environments. Hardware interrupt handling and a vectored interrupt structure support real-time embedded designs.
The architecture combines a Harvard-bus RISC core with C-compiler-friendly instruction set, multiple clock sources (HFINTOSC, LFINTOSC, EC, HS, RC), and configurable oscillator modes for power-versus-speed trade-offs. Charge time measurement unit (CTMU) supports touch sensing and capacitive measurement applications, and the integrated USB module streamlines HID, CDC, and vendor-class firmware. Power-saving features such as alternate-run, doze, idle, and sleep modes allow designers to optimize energy profiles per peripheral.
Typical applications include USB human-interface devices (HID mice/keyboards), USB-to-BRD bridges, sensor hubs, low-power IoT endpoints, industrial data loggers, and consumer peripherals. The wide operating voltage and -40C to +85C industrial range also suit point-of-sale terminals and metering equipment. The integrated USB makes the part especially attractive when board area for an external transceiver must be eliminated.
When designing with this device, ensure proper decoupling (100 nF ceramic on VDD and a 4.7uF bulk on AVDD) and that the USB VBUS pin voltage is conditioned to remain within 3.6V on this 'LF' variant. The 48 MHz internal oscillator typically eliminates the need for an external crystal for non-USB-critical timing; USB operation still requires a 48 MHz ±0.25% clock source.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Alternativas drop-in para PIC18LF24K50-I/SO — 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 PIC18LF24K50-I/SO (mesmo formato e footprint) — diferindo em Package, Timers, ADC, Supply Voltage (VDD), Operating Temperature.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
PIC18F24K50-I/SO
✅ Drop-In✓ Em estoque
$2.05 / unidade
Ver ficha técnica →PIC18LF24K50T-I/SO
✅ Drop-In✓ Em estoque
$2.95 / unidade
Ver ficha técnica →PIC18LF24K50-I/SS
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
PIC18F25K50-I/SO
✅ Drop-In ⚠️ Especificações não verificadas✓ Em estoque
$2.95 / unidade
Ver ficha técnica →PIC18LF25K50-I/SO
✅ Drop-In ⚠️ Especificações não verificadas✓ Em estoque
$2.15 / unidade
Ver ficha técnica →PIC18LF24K50-I/SO Classificações máximas e características elétricas
| Family | PIC® XLP™ 18K |
| Core Processor | PIC18 |
| Core Size | 8-bit |
| Max CPU Speed | 48 MHz |
| Throughput | 16 MIPS |
| Program Memory (Flash) | 16 KB (8K x 16) |
| RAM | 2 KB |
| EEPROM | 256 bytes |
| Supply Voltage (VDD) | 1.8 V to 3.6 V |
| Temperatura de operação | -40 C to +85 C (Industrial) |
| Encapsulamento | 28-SOIC (0.295", 7.50 mm width) |
| Tipo de montagem | Surface Mount |
| I/O Pins | 20 (approx.) |
| Integrated USB | USB 2.0 Full-Speed (12 Mbps) transceiver, no external PHY |
| ADC | 10-bit, up to 25 channels |
| Communication Interfaces | 2x MSSP (I2C/SPI), 1x EUSART (LIN), USB |
| CCP / ECCP Modules | 2x (1x CCP + 1x ECCP) |
| Low-Power Mode | nanoWatt XLP, sleep current ~20 nA typical |
| Timers | 8-bit and 16-bit, multiple |
| Status RoHS | Compliant |
Configuração de pinos do PIC18LF24K50-I/SO
| Pino 1 | MCLR/RE3 — Master Clear (active low reset) / RE3 digital input |
| Pino 2 | RA0 — PORTA bit 0, analog/digital I/O |
| Pino 3 | RA1 — PORTA bit 1, analog/digital I/O |
| Pino 4 | RA2 — PORTA bit 2, analog/digital I/O |
| Pino 5 | RA3 — PORTA bit 3, analog/digital I/O |
| Pino 6 | RA4 — PORTA bit 4, analog/digital I/O |
| Pino 7 | RA5 — PORTA bit 5, analog/digital I/O |
| Pino 8 | VSS — Ground reference |
| Pino 9 | RA7 — PORTA bit 7, analog/digital I/O |
| Pino 10 | RA6 — PORTA bit 6, analog/digital I/O |
| Pino 11 | VDD — Positive supply voltage (1.8V-3.6V) |
| Pino 12 | VSS — Ground reference |
| Pino 13 | OSC1/CLKIN — External clock input or crystal connection |
| Pino 14 | OSC2/CLKOUT — External clock output or crystal connection |
| Pino 15 | RC0 — PORTC bit 0, digital I/O |
| Pino 16 | RC1 — PORTC bit 1, digital I/O |
| Pino 17 | RC2 — PORTC bit 2, digital I/O |
| Pino 18 | RC3 — PORTC bit 3, digital I/O |
| Pino 19 | RC4 — PORTC bit 4, digital I/O / USB D- (alt) |
| Pino 20 | RC5 — PORTC bit 5, digital I/O |
| Pino 21 | RC6 — PORTC bit 6, digital I/O / TX for EUSART |
| Pino 22 | RC7 — PORTC bit 7, digital I/O / RX for EUSART |
| Pino 23 | RB0 — PORTB bit 0, interrupt-on-change capable |
| Pino 24 | RB1 — PORTB bit 1, interrupt-on-change capable |
| Pino 25 | RB2 — PORTB bit 2, interrupt-on-change capable |
| Pino 26 | RB3 — PORTB bit 3, interrupt-on-change capable |
| Pino 27 | RB4 — PORTB bit 4, interrupt-on-change capable |
| Pino 28 | RB5 — PORTB bit 5, interrupt-on-change capable |
Aplicações típicas
PIC18LF24K50-I/SO é adequado para 6 aplicaçãos: USB HID Human Interface Device, USB to UART Bridge Adapter, Battery-Powered IoT Sensor Node, Industrial Data Logger, Consumer Electronics USB Peripheral, Point-of-Sale / Metering Terminal.
USB HID Human Interface Device
The PIC18LF24K50-I/SO is purpose-built for USB HID applications such as mice, keyboards, and game controllers. Its integrated full-speed USB 2.0 transceiver eliminates external PHY cost, while 16KB Flash accommodates HID class descriptors and composite device firmware. The 48 MHz internal oscillator provides ±0.25% accuracy USB spec compliant, and the 1.8V-3.6V range supports direct Li-ion cell power via a 3.3V LDO. The 2KB RAM is ample for HID class buffering; nanoWatt XLP sleep current of ~20 nA allows the device to enter suspend state at <500 uA per USB 2.0 spec while still waking on host resume signaling. The 28-SOIC package provides 20+ I/O for buttons, LEDs, and encoders.
Recomendado
USB to UART Bridge Adapter
The PIC18LF24K50-I/SO implements CDC (Communications Device Class) bridges that emulate a virtual COM port over USB while driving a UART on the EUSART peripheral. This eliminates expensive USB-to-UART ICs like FT232 in cost-sensitive designs. The 16KB Flash holds CDC class firmware with room for vendor-specific commands; the 48 MHz clock ensures full-speed USB compliance. Power profile is dominated by the USB VBUS presence detect via internal pull-up, enabling true suspend/resume with sub-microamp quiescent current. The 28-SOIC footprint enables compact adapter dongle designs.
Recomendado
Battery-Powered IoT Sensor Node
The PIC18LF24K50-I/SO suits battery-powered IoT sensors due to its nanoWatt XLP extreme-low-power technology and wide 1.8V-3.6V supply range. Sleep currents of ~20 nA typical allow multi-year coin-cell operation for periodic measurement tasks. The 10-bit ADC with up to 25 channels supports multi-sensor analog front-ends; the CTMU enables capacitive touch sensing without external components. The integrated USB allows easy firmware update and data download via USB cable without requiring a separate programmer, simplifying field service workflows. Industrial -40C to +85C range handles outdoor IoT deployments.
Recomendado
Industrial Data Logger
The PIC18LF24K50-I/SO serves industrial data loggers thanks to its 16KB Flash for application code, 256-byte EEPROM for parameter storage, and -40C to +85C industrial temperature grade. The 25-channel 10-bit ADC acquires process signals (temperature, pressure, flow) at rates sufficient for slow-telemetry applications. The I²C/SPI MSSP peripherals connect to external sensors and EEPROM/FRAM memory for high-density logging. The integrated USB allows mass-storage class (MSC) enumeration to export logged CSV files directly to a PC. The 28-SOIC package provides ample I/O for digital status LEDs and relay drivers.
Recomendado
Consumer Electronics USB Peripheral
The PIC18LF24K50-I/SO is widely deployed in consumer USB peripherals such as presentation clickers, foot pedals, custom HID controllers, and gamepads. The integrated USB transceiver reduces BOM cost versus discrete designs; the 48 MHz clock runs directly from the internal oscillator without crystal. The 1.8-3.6V range allows direct Li-ion or 2xAA cell power, eliminating boost converters in mobile peripherals. The nanoWatt XLP suspend mode meets USB 2.0 suspended device current of <500 uA. The 28-SOIC is hand-solderable for low-volume custom peripherals and prototyping.
Recomendado
Point-of-Sale / Metering Terminal
The PIC18LF24K50-I/SO fits point-of-sale (POS) terminals and metering equipment that require USB connectivity for data transfer and field firmware updates. The wide industrial -40C to +85C temperature envelope handles indoor and sheltered outdoor installations. The 16KB Flash supports metering firmware plus USB class drivers; the I²C peripherals connect to secure EEPROM, RTC, and display drivers. The USB device-mode allows the metering terminal to plug into any host PC without drivers on modern OSes, leveraging CDC class for legacy compatibility.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para PIC18LF24K50-I/SO — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | PIC18F24K50-I/SO | PIC18LF24K50T-I/SO | PIC18LF24K50-I/SS | PIC18F25K50-I/SO | PIC18LF25K50-I/SO |
|---|---|---|---|---|---|---|
| Package | 28-SOIC (0.295") | 28-SOIC (0.295") - same | 28-SOIC (0.295") - same | 28-SSOP (0.209") | 28-SOIC (0.295") - same | 28-SOIC (0.295") - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory (Flash) | 16 KB | 16 KB | 16 KB | 16 KB | 32 KB | 32 KB |
| Supply Voltage (VDD) | 1.8 V to 3.6 V | 1.8 V to 5.5 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 5.5 V | 1.8 V to 3.6 V |
| Max CPU Speed | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz |
| Integrated USB | Yes (USB 2.0 FS device) | Yes (USB 2.0 FS device) | Yes (USB 2.0 FS device) | Yes (USB 2.0 FS device) | Yes (USB 2.0 FS device) | Yes (USB 2.0 FS device) |
| Pin Count | 28 | 28 | 28 | 28 | 28 | 28 |
| Temperature Grade | Industrial -40C to +85C | Industrial -40C to +85C | Industrial -40C to +85C | Industrial -40C to +85C | Industrial -40C to +85C | Industrial -40C to +85C |
| Approximate Unit Price (USD) | $2.60 | $2.60 - $2.85 | $2.60 | $2.40 - $2.70 | $2.85 - $3.10 | $2.85 - $3.10 |
Principais diferenciais
- Integrated USB 2.0 full-speed transceiver eliminates external PHY (vs PIC18F4550-I/P)
- nanoWatt XLP extreme-low-power technology (vs PIC18F2450-I/SO (legacy))
- Wide 1.8V-3.6V supply range enables direct Li-ion / 2xAA power (vs PIC18F24K50-I/SO (5V version))
Notas de projeto
Decoupling: place a 100 nF X7R ceramic capacitor as close as possible to each VDD pin and a 4.7uF to 10uF bulk capacitor on the AVDD pin. The USB internal regulator requires adequate bulk capacitance on VUSB (pin 20 in SOIC); Microchip suggests 220 nF minimum for full-speed USB compliance. The LF variant operates 1.8V-3.6V; a 3.3V LDO fed from USB VBUS is the typical power topology.
USB D+/D- traces (RB4 and RB6 on 28-SOIC) must be 45 ohm ±10% characteristic impedance, matched in length to within 150 mil. Place the 27 ohm series termination resistors close to the MCU pins. Keep USB signals away from clock sources and switching regulators; a guard ground via fence adjacent to D+/D- improves EMI margins.
Do not skip configuring CONFIG words: FOSC must select HS, XT, or EC for USB operation; WDT must be disabled or properly managed; LVP must match the ICSP programmer. Failure to set PLLEN properly can leave USB module without 48 MHz clock. Always read the CONFIGURATION SUMMARY section of the datasheet when migrating from PIC18F2450/2550 to PIC18F24K50 - register names differ.
Estimated: at full USB operation (~30 mA supply current for active MCU + I/O sourcing), the 28-SOIC package dissipates ~100 mW (3.3V × 30 mA). Junction temperature rise is approximately 4 C above ambient using theta_JA of ~45 C/W typical for SOIC-28, so no thermal management is required for normal operation. Industrial -40C to +85C ambient is well within safe limits.
The 48 MHz internal HFINTOSC accuracy is ±2% typical across voltage and temperature - not adequate for USB without USB clock tuning from the SOF packet (Microchip USB framework handles this automatically). For applications requiring accurate timing (UART with tight baud rates), use an external 48 MHz crystal with 20 pF loading capacitors. Avoid long traces on OSC1/OSC2 to prevent stray capacitance shifts.
Informações de conformidade
RoHS compliant per Microchip product page. Not AEC-Q100 qualified - choose PIC18F24K50 automotive grade if AEC-Q100 is required. MSL level and Halogen free status confirmed per Microchip packaging materials datasheet.
