PIC18LF8390-I/PT - 8-bit MCU, 8KB Flash, 768B RAM, 80-TQFP
N.º da peça: PIC18LF8390-I/PT ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $2.98 | $2,98 |
| 10 | $2.7 | $27,00 |
| 100 | $2.4 | $240,00 |
| 500 | $2.27 | $1.135,00 |
| 1.000 | $2.1 | $2.100,00 |
PIC18LF8390-I/PT Visão geral
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, RAM, Flash, peripherals, and I/O. The PIC18 family uses an enhanced RISC architecture with a 16-bit instruction word and 8-bit data path, sitting within the broader taxonomy of microcontroller -> embedded controller -> semiconductor IC. Compared with 32-bit ARM Cortex-M parts, the PIC18F prioritizes deterministic interrupt latency, low power, and ease of programming for cost-sensitive applications.
Key features include a 40 MHz internal oscillator, integrated ADC, multiple PWM and capture/compare modules, two USART modules, and an SPI/I2C peripheral set. The device supports ICD (In-Circuit Debug) via dedicated RB6/RB7 pins, enabling real-time emulation through MPLAB tools. The 80-pin TQFP package exposes extensive I/O, making it appropriate for human-machine interface (HMI) and motor-control designs.
The LF variant reduces core voltage to extend battery life in portable products, while the 40 MHz CPU delivers up to 10 MIPS, providing ample headroom for sensor fusion, LED control, and protocol bridging. The architecture also supports self-programming, allowing firmware updates in the field without external bootloaders.
Typical applications include industrial control panels, building automation, HVAC fan control, automotive body modules, and battery-powered instrumentation where the wide I/O count and low-voltage operation are decisive. When designing with this part, ensure decoupling capacitors (100nF + 10uF) are placed within 5 mm of the VDD pins, and follow Microchip AN585 and TB313 for oscillator and in-circuit debug layout guidance.
Alternativas drop-in para PIC18LF8390-I/PT — 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 PIC18LF8390-I/PT (mesmo formato e footprint) — diferindo em Package, Core Architecture, Operating Temperature, I/O Pins, ADC.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
PIC18LF6622-I/PT
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
PIC18LF6680-I/PT
✅ Drop-In✓ Em estoque
$12.85 / unidade
Ver ficha técnica →PIC18LF8585-I/PT
✅ Drop-In✓ Em estoque
$6.2 / unidade
Ver ficha técnica →PIC18LF6525-I/PT
✅ Drop-In✓ Em estoque
$6.2 / unidade
Ver ficha técnica →PIC18LF6310-I/PT
✅ Drop-In✓ Em estoque
$5.32 / unidade
Ver ficha técnica →PIC18LF8390-I/PT Classificações máximas e características elétricas
| Product Family | PIC18F |
| Core | 8-bit PIC RISC |
| Program Memory | 8 KB Flash (4K x 16) |
| RAM | 768 bytes |
| Maximum CPU Frequency | 40 MHz |
| MIPS (peak) | 10 MIPS |
| Supply Voltage (LF) | 2.0 V to 3.6 V |
| I/O Pins | 66 |
| Encapsulamento | 80-TQFP (12x12 mm) |
| Temperatura de operação | -40C to +85C |
| Tipo de montagem | Surface Mount |
| Packing Media | Tray (119 pcs) |
| Lead Count | 80 |
| Status RoHS | Compliant |
| Debug Interface | ICD (In-Circuit Debug) via RB6/RB7 |
Configuração de pinos do PIC18LF8390-I/PT
| Pino 1 | OSC1/CLKIN — Oscillator input / external clock |
| Pino 2 | OSC2/CLKOUT — Oscillator output |
| Pino 3 | MCLR — Master clear reset (active-low) |
| Pino 4 | RA0 — PORTA bit 0 (analog/digital I/O) |
| Pino 5 | RA1 — PORTA bit 1 |
| Pino 6 | RA2 — PORTA bit 2 |
| Pino 7 | RA3 — PORTA bit 3 |
| Pino 8 | RA4 — PORTA bit 4 |
| Pino 9 | RA5 — PORTA bit 5 |
| Pino 10 | RA6 — PORTA bit 6 |
| Pino 11 | VSS — Ground |
| Pino 12 | VDD — Positive supply |
| Pino 13 | RB0 — PORTB bit 0 (external interrupt) |
| Pino 14 | RB1 — PORTB bit 1 |
| Pino 15 | RB2 — PORTB bit 2 |
| Pino 16 | RB3 — PORTB bit 3 |
| Pino 17 | RB4 — PORTB bit 4 |
| Pino 18 | RB5 — PORTB bit 5 |
| Pino 19 | RB6 — PORTB bit 6 (ICD PGC) |
| Pino 20 | RB7 — PORTB bit 7 (ICD PGD) |
| Pino 21 | RC0 — PORTC bit 0 |
| Pino 22 | RC1 — PORTC bit 1 |
| Pino 23 | RC2 — PORTC bit 2 |
| Pino 24 | RC3 — PORTC bit 3 |
| Pino 25 | RC4 — PORTC bit 4 |
| Pino 26 | RC5 — PORTC bit 5 |
| Pino 27 | RC6 — PORTC bit 6 (TX) |
| Pino 28 | RC7 — PORTC bit 7 (RX) |
| Pino 29 | RD0 — PORTD bit 0 |
| Pino 30 | RD1 — PORTD bit 1 |
| Pino 31 | RD2 — PORTD bit 2 |
| Pino 32 | RD3 — PORTD bit 3 |
| Pino 33 | RD4 — PORTD bit 4 |
| Pino 34 | RD5 — PORTD bit 5 |
| Pino 35 | RD6 — PORTD bit 6 |
| Pino 36 | RD7 — PORTD bit 7 |
| Pino 37 | VSS — Ground |
| Pino 38 | VDD — Positive supply |
| Pino 39 | RE0 — PORTE bit 0 |
| Pino 40 | RE1 — PORTE bit 1 |
| Pino 41 | RE2 — PORTE bit 2 |
| Pino 42 | RE3 — PORTE bit 3 |
| Pino 43 | RE4 — PORTE bit 4 |
| Pino 44 | RE5 — PORTE bit 5 |
| Pino 45 | RE6 — PORTE bit 6 |
| Pino 46 | RE7 — PORTE bit 7 |
| Pino 47 | RF0 — PORTF bit 0 |
| Pino 48 | RF1 — PORTF bit 1 |
| Pino 49 | RF2 — PORTF bit 2 |
| Pino 50 | RF3 — PORTF bit 3 |
| Pino 51 | RF4 — PORTF bit 4 |
| Pino 52 | RF5 — PORTF bit 5 |
| Pino 53 | RF6 — PORTF bit 6 |
| Pino 54 | RF7 — PORTF bit 7 |
| Pino 55 | RG0 — PORTG bit 0 |
| Pino 56 | RG1 — PORTG bit 1 |
| Pino 57 | RG2 — PORTG bit 2 |
| Pino 58 | RG3 — PORTG bit 3 |
| Pino 59 | RG4 — PORTG bit 4 |
| Pino 60 | AVSS — Analog ground |
| Pino 61 | AVDD — Analog positive supply |
| Pino 62 | RH0 — PORTH bit 0 |
| Pino 63 | RH1 — PORTH bit 1 |
| Pino 64 | RH2 — PORTH bit 2 |
| Pino 65 | RH3 — PORTH bit 3 |
| Pino 66 | RH4 — PORTH bit 4 |
| Pino 67 | RH5 — PORTH bit 5 |
| Pino 68 | RH6 — PORTH bit 6 |
| Pino 69 | RH7 — PORTH bit 7 |
| Pino 70 | RJ0 — PORTJ bit 0 |
| Pino 71 | RJ1 — PORTJ bit 1 |
| Pino 72 | RJ2 — PORTJ bit 2 |
| Pino 73 | RJ3 — PORTJ bit 3 |
| Pino 74 | RJ4 — PORTJ bit 4 |
| Pino 75 | RJ5 — PORTJ bit 5 |
| Pino 76 | RJ6 — PORTJ bit 6 |
| Pino 77 | RJ7 — PORTJ bit 7 |
| Pino 78 | VSS — Ground |
| Pino 79 | VDD — Positive supply |
| Pino 80 | NC — Not connected (per datasheet) |
Aplicações típicas
PIC18LF8390-I/PT é adequado para 6 aplicaçãos: Industrial Control Panel HMI, Battery-Powered HVAC Sensor Node, LED Lighting Controller, Automotive Body Module, Portable Medical Monitoring Device, Industrial Motor Control.
Industrial Control Panel HMI
The PIC18LF8390-I/PT's 66 I/O pins and 8 KB Flash make it ideal for industrial control panel HMIs with multiple LEDs, 7-segment displays, keypad matrix, and relay outputs. The 40 MHz CPU provides 10 MIPS throughput, sufficient for real-time scanning of 8x8 keypads (64 keys) and refresh of 16-digit multiplexed displays within the 20 ms human-perception threshold. Operating from 2.0V to 3.6V and the -40C to +85C industrial range ensure robust behavior on factory floors. Designers pair the MCU with a ULN2003A for relay drive and an HC595 for output expansion.
Recomendado
Battery-Powered HVAC Sensor Node
With 2.0V to 3.6V operation and integrated ADC, the PIC18LF8390-I/PT is well suited for battery-powered HVAC sensors that monitor temperature, humidity, and pressure over 5-10 year battery life. The 768-byte SRAM and 8 KB Flash accommodate small RTOS-less firmware loops. Designers configure the ADC for low-power duty cycling, sleeping the MCU between measurements. The 80-pin TQFP exposes enough I/O to interface a 4-line character LCD, multiple SPI sensors, and a 1-Wire interface without external bus expanders.
Recomendado
LED Lighting Controller
The PIC18LF8390-I/PT drives multi-channel LED lighting controllers via its multiple PWM and capture/compare modules, generating 8-bit or 10-bit PWM at up to 40 kHz for flicker-free dimming. The 66 I/O pins support driving 12-16 RGBW LED strings directly through MOSFET drivers, and the integrated ADC reads ambient light sensors for closed-loop brightness control. The wide LF voltage range lets the MCU share the LED driver's 3.3V rail without additional regulators.
Recomendado
Automotive Body Module
Inside automotive body modules (door controllers, seat controllers, mirror adjusters), the PIC18LF8390-I/PT handles LIN slave communication, motor PWM, and switch matrix scanning. Its -40C to +85C industrial temperature range covers cabin environments, while the 40 MHz core debounces switch contacts and runs LIN protocol stacks within microsecond budgets. Designers pair it with LIN transceivers like the TJA1027 and H-bridge drivers such as the MC33926 to drive seat and mirror motors.
Recomendado
Portable Medical Monitoring Device
For battery-powered medical monitoring (pulse oximeters, glucose meters, portable ECG), the PIC18LF8390-I/PT offers low-voltage LF operation down to 2.0V and 10 MIPS throughput for signal processing. The integrated ADC captures analog biosignals, while 768 bytes of SRAM buffer short data bursts before transmitting over UART to a host. The wide operating range and industrial temperature support use in ambulances, clinics, and home healthcare settings.
Recomendado
Industrial Motor Control
The PIC18LF8390-I/PT drives small industrial motors (fans, pumps, conveyor rollers) through its PWM and capture/compare peripherals, generating complementary PWM with programmable dead-time for safe half-bridge switching. The 40 MHz CPU executes FOC (field-oriented control) loops on small BLDC motors below 200 W, while the 66 I/O handle quadrature encoder inputs and Hall sensor feedback. Designers route motor current through Hall-effect sensors like the ACS712 into the on-chip ADC for closed-loop torque control.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para PIC18LF8390-I/PT — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | PIC18LF6622-I/PT | PIC18LF6680-I/PT | PIC18LF8585-I/PT |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 80-TQFP (12x12 mm) | 64-TQFP - PCB rework required | 80-TQFP - same | 80-TQFP - same |
| Program Flash | 8 KB | 64 KB | 16 KB | 48 KB |
| RAM | 768 B | 3.8 KB | 1.5 KB | 3.3 KB |
| Maximum Frequency | 40 MHz | 40 MHz | 40 MHz | 40 MHz |
| Operating Voltage | 2.0 V to 3.6 V (LF) | 2.0 V to 3.6 V | 2.0 V to 3.6 V | 2.0 V to 3.6 V |
| I/O Pins | 66 | 54 | 66 | 66 |
| CAN Peripheral | No | Yes | Yes | No |
Principais diferenciais
- 66 I/O in LF low-voltage family (vs PIC18LF4520-I/PT)
- Low-voltage LF operation (vs PIC18F8390)
- Cost-optimized Flash density (vs PIC18LF6680-I/PT)
Notas de projeto
Place a 100 nF decoupling capacitor within 5 mm of every VDD/AVDD pin, with a bulk 10 uF tantalum or ceramic capacitor at the board entry. Use separate analog (AVDD) and digital (VDD) supplies if the analog subsystem is active; otherwise tie AVDD to VDD through a ferrite bead to suppress switching noise from digital I/O.
The 80-pin TQFP has 0.5 mm pitch - use 4-layer PCB with continuous ground plane beneath the part to reduce EMI. Keep the MCLR pull-up (10 kOhm) close to the pin and route RB6/RB7 to dedicated ICD header pads for in-circuit debugging without disturbing the design.
Do not leave unused I/O pins floating - configure them as outputs low or inputs with internal weak pull-ups to avoid shoot-through current. The LF variant requires 2.0V minimum; powering below 2.0V can cause Flash read errors and ADC drift. Apply configuration bits carefully: WDT, BOR, and oscillator selection all affect boot reliability.
Informações de conformidade
LF suffix denotes low-voltage lead-free process; RoHS compliant per Microchip product page. Industrial -40C to +85C temperature range only - not AEC-Q100 qualified.
