PIC18F4539-I/PT - 8-Bit MCU 40MHz 24KB Flash 44-TQFP | Microchip
Référence : PIC18F4539-I/PT ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $9.1 | $9,10 |
| 10 | $8.2 | $82,00 |
| 100 | $7.3 | $730,00 |
| 500 | $6.55 | $3 275,00 |
| 1 000 | $5.85 | $5 850,00 |
PIC18F4539-I/PT Présentation
A microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory, RAM, and a rich set of peripheral I/O into one package. The PIC18F family represents an 8-bit RISC Harvard-architecture line positioned above baseline PIC16F parts in performance, code density, and peripheral count, sitting in the mid-tier of Microchip's 8-bit portfolio, below the PIC24/dsPIC33 16-bit families. The PIC18F4539 merges these architectural advantages with FLASH self-programmability, in-circuit debugging via ICD, and nanoWatt power management, suiting both motor control and general-purpose embedded tasks.
Key differentiating features include 32 interrupt sources, four timer modules, two capture/compare/PWM modules with motor-control enhancements, an enhanced USART, and an MSSP port that supports SPI and I2C. The 10-bit ADC offers eight channels that can pair with the integrated motor-control PWM to implement closed-loop speed or torque feedback. Hardware multiplier support and a 16-bit wide instruction path help C compilers generate efficient code, while the part retains the classic PIC RISC instruction set for assembly-level optimization.
Typical applications include single-phase induction motor drives (fans, pumps, compressors), white-goods and appliance controllers, industrial automation subsystems, HVAC blower control, low-end BLDC gate-driver hosts, sensor conditioning front-ends, and general-purpose 8-bit embedded platforms. The combination of dedicated motor-control hardware and conventional MCU peripherals also makes it suitable as a glue controller for motor-driver ICs in ceiling fans and small industrial drives.
When designing with the PIC18F4539-I/PT, allocate the analog supply current budget carefully because the ADC and motor-control analog front-end draw separately from the digital core; place a 0.1 µF decoupling capacitor as close as possible to each VDD/VSS pair, and provide an RC filter on the analog VDD pin when ADC SNR is critical for the chosen motor-control loop bandwidth.
Alternatives de remplacement direct pour PIC18F4539-I/PT — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec PIC18F4539-I/PT (même facteur de forme et même empreinte) — différant par Package, ADC, Core Architecture, Program Memory (Flash), Timers.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
PIC18F4439-I/PT
✅ Remplacement direct✓ En stock
$5.05 / unité
Voir la fiche technique →PIC18F4458-I/PT
✅ Remplacement direct✓ En stock
$5.79 / unité
Voir la fiche technique →PIC18F4480-I/PT
✅ Remplacement direct✓ En stock
$4.85 / unité
Voir la fiche technique →PIC18F44K22-I/PT
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
PIC18F452-I/PT
✅ Remplacement direct✓ En stock
$5.84 / unité
Voir la fiche technique →PIC18F4525-I/PT
✅ Remplacement direct✓ En stock
$4.18 / unité
Voir la fiche technique →PIC18F4539-I/PT Valeurs maximales et caractéristiques électriques
| Core Architecture | PIC18F (8-bit RISC, Harvard) |
| Instruction Set Width | 16-bit |
| Maximum CPU Clock | 40 MHz |
| Program Memory (Flash) | 24 KB (12K x 16 words) |
| Data RAM | 1408 bytes |
| EEPROM | 256 bytes |
| Supply Voltage (VDD) | 4.2 V to 5.5 V |
| Digital I/O Pins | 36 |
| ADC | 10-bit, 8 channels |
| PWM Modules | 2 (with motor-control enhancements) |
| Timers | 4 |
| Capture/Compare/PWM | 2 modules |
| Communication | Enhanced USART, MSSP (SPI/I2C) |
| Boîtier | 44-pin TQFP (10x10 mm) |
| Température de fonctionnement | -40C to +85C (Industrial, -I) |
| Special Features | Motor-control kernel, nanoWatt power management, ICD |
| Statut RoHS | Compliant |
Configuration des broches de PIC18F4539-I/PT
| Broche 1 | RC0/T1OSO/T1CKI — PORTC bit 0, Timer1 oscillator output or clock input |
| Broche 2 | RC1/T1OSI/CCP2 — PORTC bit 1, Timer1 oscillator input or CCP2 output |
| Broche 3 | RC2/CCP1 — PORTC bit 2, CCP1 module output (PWM) |
| Broche 4 | RC3 — PORTC bit 3 |
| Broche 5 | RD0/PSP0 — PORTD bit 0, Parallel Slave Port bit 0 |
| Broche 6 | RD1/PSP1 — PORTD bit 1, Parallel Slave Port bit 1 |
| Broche 7 | RD2/PSP2 — PORTD bit 2, Parallel Slave Port bit 2 |
| Broche 8 | RD3/PSP3 — PORTD bit 3, Parallel Slave Port bit 3 |
| Broche 9 | RD4/PSP4 — PORTD bit 4, Parallel Slave Port bit 4 |
| Broche 10 | RD5/PSP5 — PORTD bit 5, Parallel Slave Port bit 5 |
| Broche 11 | RD6/PSP6 — PORTD bit 6, Parallel Slave Port bit 6 |
| Broche 12 | RD7/PSP7 — PORTD bit 7, Parallel Slave Port bit 7 |
| Broche 13 | VSS — Digital ground |
| Broche 14 | VDD — Digital supply voltage 4.2-5.5 V |
| Broche 15 | OSC2/CLKO — Crystal/Resonator output or clock output |
| Broche 16 | OSC1/CLKI — Crystal/Resonator input or clock input |
| Broche 17 | RA0/AN0 — PORTA bit 0, analog input AN0 |
| Broche 18 | RA1/AN1 — PORTA bit 1, analog input AN1 |
| Broche 19 | RA2/AN2/VREF- — PORTA bit 2, analog input AN2, ADC VREF- |
| Broche 20 | RA3/AN3/VREF+ — PORTA bit 3, analog input AN3, ADC VREF+ |
| Broche 21 | RA4/T0CKI — PORTA bit 4, Timer0 clock input |
| Broche 22 | RA5/AN4/SS — PORTA bit 5, analog input AN4, SSP slave select |
| Broche 23 | RE0/RD/AN5 — PORTE bit 0, RD control or AN5 |
| Broche 24 | RE1/WR/AN6 — PORTE bit 1, WR control or AN6 |
| Broche 25 | RE2/CS/AN7 — PORTE bit 2, CS control or AN7 |
| Broche 26 | VDD — Digital supply voltage |
| Broche 27 | VSS — Digital ground |
| Broche 28 | RG0 — PORTG bit 0 |
| Broche 29 | RG1 — PORTG bit 1 |
| Broche 30 | RG2 — PORTG bit 2 |
| Broche 31 | RG3 — PORTG bit 3 |
| Broche 32 | RG4 — PORTG bit 4 |
| Broche 33 | MCLR/VPP — Master clear reset input / programming voltage |
| Broche 34 | RB0/INT0 — PORTB bit 0, external interrupt 0 |
| Broche 35 | RB1/INT1 — PORTB bit 1, external interrupt 1 |
| Broche 36 | RB2/INT2 — PORTB bit 2, external interrupt 2 |
| Broche 37 | RB3/INT3 — PORTB bit 3, external interrupt 3 |
| Broche 38 | RB4/INT4 — PORTB bit 4, external interrupt 4 |
| Broche 39 | RB5/INT5 — PORTB bit 5, external interrupt 5 |
| Broche 40 | RB6/INT6 — PORTB bit 6, external interrupt 6 |
| Broche 41 | RB7/INT7 — PORTB bit 7, external interrupt 7 |
| Broche 42 | RC4 — PORTC bit 4 |
| Broche 43 | RC5 — PORTC bit 5 |
| Broche 44 | RC6 — PORTC bit 6 |
Applications typiques
PIC18F4539-I/PT convient pour 6 applications: Single-Phase Induction Motor Control, HVAC Blower and Fan Speed Controllers, White Goods and Appliance Controllers, Industrial Automation Sensor Front-Ends, Pump and Compressor Variable-Speed Drives, General-Purpose 8-bit Embedded Control.
Single-Phase Induction Motor Control
The PIC18F4539-I/PT is purpose-built for variable-speed single-phase induction motor control in fans, pumps, and compressors. Its dedicated motor-control kernel and two motor-control PWM outputs at 40 MHz provide the deterministic switching needed for TRIAC or IGBT firing. The 8-channel 10-bit ADC paired with 1408 bytes RAM closes the speed/torque feedback loop with headroom for control algorithms beyond a basic V/f profile, while 24 KB flash absorbs both the motor-control firmware and a small user interface or wireless stack without resorting to external memory.
Recommandé
HVAC Blower and Fan Speed Controllers
For HVAC blower and ceiling fan applications the PIC18F4539-I/PT delivers precise speed regulation with low acoustic noise. Operating from a 5 V rail across -40 to +85 C, the part rides through hot attic or motor-housing environments while its enhanced USART streams telemetry to a paired thermostat or building controller. The 256-byte EEPROM stores calibration data and last-set fan curves between power cycles, reducing the need for external non-volatile memory in the BOM.
Recommandé
White Goods and Appliance Controllers
The PIC18F4539-I/PT fits white-goods controllers such as washing-machine drain pumps, dishwasher circulation pumps, and refrigerator evaporator fans. Its 36 digital I/O lines multiplex discrete inputs (door switches, pressure sensors), keypad inputs, relay drivers, and buzzer outputs through the PORTB-PORTE range. With 24 KB flash it accommodates the C-compiler-generated state machine plus Modbus or LIN-compatible communication handled by the MSSP SPI/I2C peripheral and USART.
Recommandé
Industrial Automation Sensor Front-Ends
Industrial sensor front-ends benefit from the PIC18F4539-I/PT's combination of 8-channel 10-bit ADC and motor-control PWM modules for excitation and synchronous detection. The architecture supports bridge-style transducer readout, thermocouple cold-junction compensation using on-chip ADC channels, and 4-20 mA loop driving via PWM-filtered outputs. The industrial -40 to +85 C temperature range plus the in-circuit debugger interface simplifies field bring-up and avoids the cost of socketed emulation boards.
Recommandé
Pump and Compressor Variable-Speed Drives
Pump and compressor variable-speed drives leverage the PIC18F4539-I/PT motor-control kernel to maintain pressure setpoints while reducing energy consumption by 30-50% versus fixed-speed operation. The PWM modules generate the anti-parallel SCR trigger pulses and run synchronous with zero-cross detection from on-chip comparators. Self-programming flash supports on-the-fly firmware updates for safety certification rollouts without disassembling the appliance housing, preserving IP68 or NEMA-4 sealed enclosures.
Recommandé
General-Purpose 8-bit Embedded Control
Beyond motor control, the PIC18F4539-I/PT serves as a versatile general-purpose 8-bit MCU for consumer and IoT edge devices where cost trumps raw compute. Its 24 KB flash, 1408 B RAM, and 256 B EEPROM outpace the PIC16F baseline while keeping within an 8-bit tool-chain. The MSSP supports both I2C sensors and SPI peripherals such as EEPROMs or displays, and the nanoWatt power-management modes make the part attractive for battery-backed remote controls and low-duty-cycle sensor nodes.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour PIC18F4539-I/PT — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | PIC18F4439-I/PT | PIC18F4458-I/PT | PIC18F4480-I/PT | PIC18F44K22-I/PT | PIC18F452-I/PT | PIC18F4525-I/PT |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 44-pin TQFP (10x10 mm) | 44-pin TQFP (10x10 mm) - same | 44-pin TQFP (10x10 mm) - same | 44-pin TQFP (10x10 mm) - same | 44-pin TQFP (10x10 mm) - same | 44-pin TQFP (10x10 mm) - same | 44-pin TQFP (10x10 mm) - same |
| Program Memory (Flash) | 24 KB | 16 KB | 24 KB | 16 KB | 16 KB | 32 KB | 48 KB |
| RAM | 1408 bytes | 768 bytes | 2048 bytes | 768 bytes | 768 bytes | 1536 bytes | 3936 bytes |
| EEPROM | 256 bytes | 256 bytes | 256 bytes | 256 bytes | 256 bytes | 256 bytes | 1024 bytes |
| Maximum Clock | 40 MHz | 40 MHz | 48 MHz | 40 MHz | 64 MHz | 40 MHz | 40 MHz |
| Motor Control Kernel | Yes | Yes | Yes (USB variant) | Yes (CAN variant) | Yes (K-series enhanced) | No | No |
| ADC Resolution | 10-bit | 10-bit | 10-bit | 10-bit | 10-bit | 10-bit | 10-bit |
Principaux différenciateurs
- Dedicated motor-control kernel versus general-purpose PIC18F45xx parts (vs PIC18F452-I/PT)
- Larger program memory headroom for motor-control plus comms firmware (vs PIC18F4439-I/PT)
- Matches TQFP-44 footprint across the PIC18F family (vs PIC18F27K42-I/ML)
Notes de conception
Estimated power: at 40 MHz, 5 V, the PIC18F4539-I/PT typically draws approximately 25 mA active current; at 4 MHz the active current drops to roughly 5 mA. Designers targeting low standby consumption should exploit nanoWatt modes (Sleep current is approximately 0.1 microamp per datasheet typical) and gate the motor-control PWM outputs before issuing the Sleep instruction.
Place 0.1 microfarad ceramic bypass capacitors as close as possible to each VDD pin (pins 14 and 26) and the corresponding VSS pins (13 and 27), with a bulk 10 microfarad tantalum or aluminum-polymer cap on the same 5 V rail. According to Microchip hardware design checklists, poor decoupling directly causes ADC noise and PWM jitter on this motor-control silicon, so use a 4-layer PCB with a dedicated ground plane when targeting full 40 MHz throughput.
Route the analog VDD/AVDD pin (29 of the die, multiplexed on the TQFP) to a separate analog supply via an RC filter (typically 10 ohm and 10 microfarad), and keep analog signal traces short and away from PWM switching traces. The motor-control kernel expects analog feedback within the same ground reference; split-plane routing that separates analog and digital grounds can introduce 2-3 LSB of ADC error at high PWM slew rates.
The ICD pins RB6 and RB7 are multiplexed with in-circuit programming, so any external circuitry driving RB6/RB7 high during reset can prevent entry into programming mode. Series resistors below 10 kilohm or active drivers on these pins must be avoided; otherwise, firmware updates in the field will require board-level isolation to recover debug access. Refer to Microchip development tool documentation for the recommended ICSP connector topology.
Informations de conformité
RoHS compliance status from Microchip product page and active lifecycle status per Digchip datasheet as of 2026-09-27; halogen-free status not explicitly confirmed in provided data.