PIC18F4539-I/PT - 8-Bit MCU 40MHz 24KB Flash 44-TQFP | Microchip
MPN: PIC18F4539-I/PT ✓ Hoạt độngPIC18F4539-I/PT Tóm tắt
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.
Bộ thay thế dễ dàng lắp đặt cho PIC18F4539-I/PT — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với PIC18F4539-I/PT (cùng hình factor và footprint) — khác nhau ở Package, ADC, Core Architecture, Program Memory (Flash), Timers.
PIC18F4439-I/PT
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Xem tài liệu →PIC18F4458-I/PT
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$9.8438 / Đơn vị
Xem tài liệu →PIC18F4480-I/PT
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Xem tài liệu →PIC18F44K22-I/PT
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC18F452-I/PT
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Xem tài liệu →PIC18F4525-I/PT
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Xem tài liệu →PIC18F4539-I/PT Tỷ lệ tối đa & tính chất điện
| 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) |
| Hộp | 44-pin TQFP (10x10 mm) |
| Nhiệt độ hoạt động | -40C to +85C (Industrial, -I) |
| Special Features | Motor-control kernel, nanoWatt power management, ICD |
| Trạng thái RoHS | Compliant |
Cấu hình chân PIC18F4539-I/PT
| Chân 1 | RC0/T1OSO/T1CKI — PORTC bit 0, Timer1 oscillator output or clock input |
| Chân 2 | RC1/T1OSI/CCP2 — PORTC bit 1, Timer1 oscillator input or CCP2 output |
| Chân 3 | RC2/CCP1 — PORTC bit 2, CCP1 module output (PWM) |
| Chân 4 | RC3 — PORTC bit 3 |
| Chân 5 | RD0/PSP0 — PORTD bit 0, Parallel Slave Port bit 0 |
| Chân 6 | RD1/PSP1 — PORTD bit 1, Parallel Slave Port bit 1 |
| Chân 7 | RD2/PSP2 — PORTD bit 2, Parallel Slave Port bit 2 |
| Chân 8 | RD3/PSP3 — PORTD bit 3, Parallel Slave Port bit 3 |
| Chân 9 | RD4/PSP4 — PORTD bit 4, Parallel Slave Port bit 4 |
| Chân 10 | RD5/PSP5 — PORTD bit 5, Parallel Slave Port bit 5 |
| Chân 11 | RD6/PSP6 — PORTD bit 6, Parallel Slave Port bit 6 |
| Chân 12 | RD7/PSP7 — PORTD bit 7, Parallel Slave Port bit 7 |
| Chân 13 | VSS — Digital ground |
| Chân 14 | VDD — Digital supply voltage 4.2-5.5 V |
| Chân 15 | OSC2/CLKO — Crystal/Resonator output or clock output |
| Chân 16 | OSC1/CLKI — Crystal/Resonator input or clock input |
| Chân 17 | RA0/AN0 — PORTA bit 0, analog input AN0 |
| Chân 18 | RA1/AN1 — PORTA bit 1, analog input AN1 |
| Chân 19 | RA2/AN2/VREF- — PORTA bit 2, analog input AN2, ADC VREF- |
| Chân 20 | RA3/AN3/VREF+ — PORTA bit 3, analog input AN3, ADC VREF+ |
| Chân 21 | RA4/T0CKI — PORTA bit 4, Timer0 clock input |
| Chân 22 | RA5/AN4/SS — PORTA bit 5, analog input AN4, SSP slave select |
| Chân 23 | RE0/RD/AN5 — PORTE bit 0, RD control or AN5 |
| Chân 24 | RE1/WR/AN6 — PORTE bit 1, WR control or AN6 |
| Chân 25 | RE2/CS/AN7 — PORTE bit 2, CS control or AN7 |
| Chân 26 | VDD — Digital supply voltage |
| Chân 27 | VSS — Digital ground |
| Chân 28 | RG0 — PORTG bit 0 |
| Chân 29 | RG1 — PORTG bit 1 |
| Chân 30 | RG2 — PORTG bit 2 |
| Chân 31 | RG3 — PORTG bit 3 |
| Chân 32 | RG4 — PORTG bit 4 |
| Chân 33 | MCLR/VPP — Master clear reset input / programming voltage |
| Chân 34 | RB0/INT0 — PORTB bit 0, external interrupt 0 |
| Chân 35 | RB1/INT1 — PORTB bit 1, external interrupt 1 |
| Chân 36 | RB2/INT2 — PORTB bit 2, external interrupt 2 |
| Chân 37 | RB3/INT3 — PORTB bit 3, external interrupt 3 |
| Chân 38 | RB4/INT4 — PORTB bit 4, external interrupt 4 |
| Chân 39 | RB5/INT5 — PORTB bit 5, external interrupt 5 |
| Chân 40 | RB6/INT6 — PORTB bit 6, external interrupt 6 |
| Chân 41 | RB7/INT7 — PORTB bit 7, external interrupt 7 |
| Chân 42 | RC4 — PORTC bit 4 |
| Chân 43 | RC5 — PORTC bit 5 |
| Chân 44 | RC6 — PORTC bit 6 |
Ứng dụng tiêu biểu
PIC18F4539-I/PT phù hợp cho 6 Áp dụngs: 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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC18F4539-I/PT — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | 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 |
Bảo phân biệt quan trọng
- Dedicated motor-control kernel versus general-purpose PIC18F45xx parts (vsPIC18F452-I/PT)
- Larger program memory headroom for motor-control plus comms firmware (vsPIC18F4439-I/PT)
- Matches TQFP-44 footprint across the PIC18F family (vsPIC18F27K42-I/ML)
Ghi chú thiết kế
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.
Thông tin tuân thủ
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.