PIC18F4539T-I/PT - 8-Bit 40MHz MCU 24KB Flash TQFP-44 | Microchip
N.º da peça: PIC18F4539T-I/PT ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $9.4 | $9,40 |
| 10 | $8.95 | $89,50 |
| 100 | $8.42 | $842,00 |
| 500 | $7.62 | $3.810,00 |
| 1.000 | $6.85 | $6.850,00 |
PIC18F4539T-I/PT Visão geral
Key features include 32 I/O pins, an integrated 12-bit A/D converter, nanoWatt Technology for low-power operation, and 28/40/44-pin Enhanced Flash Microcontrollers. The device operates from a supply voltage of 4.2V to 5.5V and supports the industrial temperature range of -40C to +85C. The PIC18F4539 series is designed for motor control and embedded applications where high computational performance is needed at economical cost.
The PIC18F4539 utilizes an enhanced Harvard architecture with a C-optimized instruction set, providing up to 10 MIPS performance at 40 MHz. The integrated motor control kernel adds hardware support for single-phase induction motor control, including dedicated PWM and feedback paths, which would otherwise require external components or extensive CPU overhead. The 12-bit A/D converter provides analog input capability for sensor feedback and motor current monitoring.
Typical applications include single-phase induction motor control, white-goods and appliance motor drives, sensor signal conditioning, embedded industrial control, and consumer appliance timing/control. The nanoWatt technology reduces active and sleep current consumption, enabling battery-backed or energy-efficient designs. With 32 I/O lines and ample program memory, the device can replace multiple discrete components in motor-driven embedded systems.
When designing with this device, ensure decoupling capacitors (typically 0.1uF plus 10uF bulk) are placed close to VDD/AVDD pins. For motor control, follow Microchip application note guidelines for current sensing and back-EMF signal routing to minimize noise pickup. Programming is supported via MPLAB X IDE with the PICkit or ICD debug tools.
This page synthesizes distributor pricing, drop-in alternative MPNs, and practical design notes for the PIC18F4539T-I/PT that are not found in the manufacturer datasheet alone, providing engineers with an engineer-grade purchasing and design reference.
Alternativas drop-in para PIC18F4539T-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 PIC18F4539T-I/PT (mesmo formato e footprint) — diferindo em Operating Temperature, Package, ADC, Core Architecture, Motor Control Kernel.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
PIC18F4539-I/PT
✅ Drop-In✓ Em estoque
$5.85 / unidade
Ver ficha técnica →PIC18F4539T-E/PT
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
PIC18F4539T-I/ML
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
PIC18F4439-I/PT
✅ Drop-In✓ Em estoque
$5.05 / unidade
Ver ficha técnica →PIC18F4539T-I/PT Classificações máximas e características elétricas
| Architecture | PIC18 (8-bit RISC, Enhanced Harvard) |
| Core | PIC18 |
| Program Memory | 24 KB FLASH (12K x 16) |
| Data RAM | 1408 bytes |
| Maximum Clock Speed | 40 MHz |
| Tensão de alimentação | 4.2 V to 5.5 V |
| I/O Pins | 32 |
| ADC | 12-bit A/D converter (integrated) |
| Motor Control Kernel | Integrated single-phase induction motor control kernel |
| Temperatura de operação | -40 C to +85 C (Industrial) |
| Encapsulamento | 44-pin TQFP (10x10 mm), Tape & Reel |
| Tipo de montagem | Surface Mount |
| Status RoHS | Compliant |
| Lead-Free | Yes |
| Low-Power Technology | nanoWatt Technology |
| Family Variant | PIC18F4539 (with PIC18F2439/4431/4539 family) |
Configuração de pinos do PIC18F4539T-I/PT
| Pino 1 | MCLR — Master Clear (reset) input, active low |
| Pino 2 | RA0/AN0 — PORTA bit 0 / analog input channel 0 |
| Pino 3 | RA1/AN1 — PORTA bit 1 / analog input channel 1 |
| Pino 4 | RA2/AN2 — PORTA bit 2 / analog input channel 2 |
| Pino 5 | RA3/AN3 — PORTA bit 3 / analog input channel 3 |
| Pino 6 | RA4/AN4 — PORTA bit 4 / analog input channel 4 |
| Pino 7 | RA5/AN5 — PORTA bit 5 / analog input channel 5 |
| Pino 8 | RE0/AN6 — PORTE bit 0 / analog input channel 6 |
| Pino 9 | RE1/AN7 — PORTE bit 1 / analog input channel 7 |
| Pino 10 | RE2/AN8 — PORTE bit 2 / analog input channel 8 |
| Pino 11 | VDD — Digital supply voltage (4.2V to 5.5V) |
| Pino 12 | VSS — Digital ground |
| Pino 13 | OSC1/CLKIN — Crystal oscillator input / external clock input |
| Pino 14 | OSC2/CLKOUT — Crystal oscillator output / clock output |
| Pino 15 | RC0 — PORTC bit 0 |
| Pino 16 | RC1 — PORTC bit 1 |
| Pino 17 | RC2 — PORTC bit 2 |
| Pino 18 | RC3 — PORTC bit 3 |
| Pino 19 | RD0 — PORTD bit 0 |
| Pino 20 | RD1 — PORTD bit 1 |
| Pino 21 | RD2 — PORTD bit 2 |
| Pino 22 | RD3 — PORTD bit 3 |
| Pino 23 | RC4 — PORTC bit 4 |
| Pino 24 | RC5 — PORTC bit 5 |
| Pino 25 | RC6 — PORTC bit 6 |
| Pino 26 | RC7 — PORTC bit 7 |
| Pino 27 | RD4 — PORTD bit 4 |
| Pino 28 | RD5 — PORTD bit 5 |
| Pino 29 | RD6 — PORTD bit 6 |
| Pino 30 | RD7 — PORTD bit 7 |
| Pino 31 | VSS — Digital ground |
| Pino 32 | VDD — Digital supply voltage (4.2V to 5.5V) |
| Pino 33 | RB0/INT0 — PORTB bit 0 / external interrupt 0 |
| Pino 34 | RB1/INT1 — PORTB bit 1 / external interrupt 1 |
| Pino 35 | RB2/INT2 — PORTB bit 2 / external interrupt 2 |
| Pino 36 | RB3/INT3 — PORTB bit 3 / external interrupt 3 |
| Pino 37 | RB4 — PORTB bit 4 |
| Pino 38 | RB5 — PORTB bit 5 |
| Pino 39 | RB6/PGC — PORTB bit 6 / ICSP clock |
| Pino 40 | RB7/PGD — PORTB bit 7 / ICSP data |
| Pino 41 | AVSS — Analog ground |
| Pino 42 | AVDD — Analog supply voltage (4.2V to 5.5V) |
| Pino 43 | VREF+ — AD positive voltage reference input |
| Pino 44 | VREF- — AD negative voltage reference input |
Aplicações típicas
PIC18F4539T-I/PT é adequado para 6 aplicaçãos: Single-Phase Induction Motor Control, White Goods and Appliance Motor Drives, HVAC Fan and Blower Control, Small Pump and Compressor Drives, Industrial Sensor Signal Conditioning, Consumer Appliance Timing and Control.
Single-Phase Induction Motor Control
The PIC18F4539T-I/PT is purpose-built for single-phase induction motor control with an integrated hardware motor-control kernel that handles commutation, PWM generation, and current feedback offloading from the CPU. The 40 MHz clock delivers 10 MIPS for closed-loop control loops at typical 4-8 kHz PWM switching frequencies, while the 12-bit A/D converter digitizes motor current and back-EMF feedback with sufficient resolution for torque-ripple minimization. The 24KB FLASH holds complete motor-state-machine firmware plus user-interface code without external memory, and the 32 I/O pins drive IGBT/MOSFET gate drivers, keypad inputs, and LED status indicators. Industrial-grade -40C to +85C operation covers under-hood appliance environments.
Recomendado
White Goods and Appliance Motor Drives
Washing machines, dryers, dishwashers, and refrigerators use the PIC18F4539T-I/PT to drive single-phase induction motors for drum, pump, and compressor functions. The integrated motor-control kernel eliminates the need for an external motor-control ASIC, reducing BOM cost and PCB area. The nanoWatt Technology enables standby power modes below 100 uA, helping appliances meet ENERGY STAR idle-power budgets. The 4.2V to 5.5V supply range accepts regulated 5V rails commonly derived from rectified transformer secondaries, and the 44-pin TQFP package supports automated SMT assembly for high-volume appliance manufacturing lines.
Recomendado
HVAC Fan and Blower Control
HVAC indoor and outdoor units use the PIC18F4539T-I/PT to drive variable-speed single-phase induction fan motors, modulating airflow based on thermostat feedback. The 12-bit ADC samples thermistor temperature sensors with 0.1C resolution, while the motor-control kernel maintains smooth sinusoidal commutation across the full speed range. The 24KB FLASH accommodates PID control firmware plus Modbus or BACnet communication stacks for building-automation integration. Industrial -40C to +85C operation handles attic and outdoor equipment installations where ambient temperatures routinely exceed 60C.
Recomendado
Small Pump and Compressor Drives
Pool pumps, water-circulation pumps, and small refrigeration compressors use the PIC18F4539T-I/PT to implement soft-start and overload protection for single-phase induction motors. The hardware motor-control kernel monitors motor current via the 12-bit ADC and trips protection within microseconds if stall conditions are detected, preventing winding burnout. The 1408-byte RAM supports running-average current calculations and thermal models. The 32 I/O lines drive the power-factor-correction stage, status LEDs, and pressure-switch inputs needed for complete pump-control subsystems.
Recomendado
Industrial Sensor Signal Conditioning
Beyond motor control, the PIC18F4539T-I/PT serves in industrial sensor hubs where 32 I/O lines interface with multiple 4-20 mA or 0-10V analog sensors, with the 12-bit ADC providing sufficient resolution for process-variable monitoring. The 24KB FLASH holds MODBUS RTU slave firmware plus calibration tables, while the 40 MHz CPU handles 100+ Hz update rates across all channels. The industrial temperature grade and surface-mount TQFP package suit DIN-rail transmitter enclosures in factory-automation cabinets.
Recomendado
Consumer Appliance Timing and Control
Microwave ovens, rice cookers, and small kitchen appliances use the PIC18F4539T-I/PT to coordinate turntable motors, fan motors, and user-interface logic in a single chip. The 32 I/O lines drive keypads, seven-segment displays, buzzer PWM, and relay outputs without external I/O expanders. The 24KB FLASH stores preset cooking programs and the 1408-byte RAM supports real-time scheduling with millisecond resolution. The nanoWatt sleep mode drops consumption below 1 uA for standby operation, meeting global appliance standby regulations including EU Ecodesign Directive lot 6.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para PIC18F4539T-I/PT — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | PIC18F4539-I/PT | PIC18F4539T-E/PT | PIC18F4539T-I/ML | PIC18F4439-I/PT |
|---|---|---|---|---|---|
| Package | 44-pin TQFP (10x10 mm) | 44-pin TQFP (10x10 mm) - same | 44-pin TQFP (10x10 mm) - same | 44-pin QFN - same pin count | 44-pin TQFP (10x10 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Maximum Clock | 40 MHz | 40 MHz - same | 40 MHz - same | 40 MHz - same | 40 MHz - same |
| I/O Pins | 32 | 32 - same | 32 - same | 32 - same | 32 (estimated, same family) |
| Supply Voltage | 4.2 V to 5.5 V | 4.2 V to 5.5 V - same | 4.2 V to 5.5 V - same | 4.2 V to 5.5 V - same | 4.2 V to 5.5 V - same |
| Operating Temperature | -40 C to +85 C (Industrial) | -40 C to +85 C - same | -40 C to +125 C (Extended) | -40 C to +85 C - same | -40 C to +85 C - same |
| Packaging Format | Tape & Reel | Tray | Tape & Reel | Tape & Reel | Tray |
Principais diferenciais
- Integrated single-phase induction motor-control kernel (vs PIC18F4520-I/P)
- Industrial temperature range in TQFP package (vs PIC18F4439-I/PT)
- Comprehensive 12-bit ADC with 8 input channels (vs Generic 8-bit MCU at same frequency)
Notas de projeto
The PIC18F4539T-I/PT requires both digital and analog supply rails: connect VDD/VDD (pins 11, 32) and AVDD (pin 42) to a regulated 4.2V to 5.5V source, with AVSS (pin 41) and VSS (pins 12, 31) tied to ground. Place a 0.1uF ceramic decoupling capacitor within 5mm of each VDD pin and a 10uF bulk capacitor on the AVDD rail. A ferrite bead or 10-ohm resistor between VDD and AVDD reduces digital switching noise coupling into the 12-bit ADC reference.
When laying out the 44-pin TQFP footprint, keep the MCLR pin (pin 1) trace short and place the MCLR pull-up resistor within 5mm to avoid spurious resets. Route the OSC1/OSC2 crystal traces (pins 13, 14) symmetrically with grounded guard traces to minimize EMI pickup. Keep ADC analog traces (RA0-RA5, RE0-RE2) away from PWM gate-drive traces and motor-phase switching nodes by at least 3mm or shield with a ground pour to maintain 12-bit ADC accuracy.
Do not exceed 5.5V on VDD or AVDD - the PIC18F4539T-I/PT is not 3.3V tolerant on I/O. Always configure unused I/O pins as outputs and drive them low to minimize sleep current. When migrating code from PIC18F452 to PIC18F4539, verify the motor-control register map because the PIC18F4539 adds dedicated motor-control SFRs not present on general-purpose PIC18F parts. In-circuit serial programming (ICSP) requires RB6/RB7 (pins 39, 40) to remain accessible - do not populate external pull-downs on these pins.
Informações de conformidade
RoHS compliant per Microchip product page. Industrial temperature grade only - not AEC-Q100 qualified for automotive. For automotive applications, consult Microchip's PIC18F Q-series or dsPIC33 families instead.