PIC18F4439-E/PT - 40MHz 8-bit MCU 12KB Flash 44-TQFP | Microchip
料号： PIC18F4439-E/PT ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $4.38 | $4.38 |
| 10 | $3.94 | $39.40 |
| 100 | $3.5 | $350.00 |
| 500 | $3.05 | $1,525.00 |
| 1,000 | $2.7 | $2,700.00 |
PIC18F4439-E/PT 概述
A PIC microcontroller (peripheral interface controller) is a compact, programmable processor that integrates CPU, non-volatile program memory, working RAM, and configurable I/O peripherals on a single silicon die. PIC microcontrollers belong to the microcontroller -> embedded processor -> semiconductor hierarchy, and the 'F' in PIC18F indicates Flash-based (reprogrammable) program memory. The PIC18 architecture is Microchip's high-performance 8-bit family, featuring an enhanced 16-bit instruction set, hardware multiplier, and a linear program memory map up to 2 MB, making it well suited for real-time control loops where deterministic interrupt latency matters.
Key features of the PIC18F4439 include 12KB Flash, 640 bytes RAM, 256 bytes EEPROM, 32 to 36 general-purpose I/O pins, a 10-bit ADC with 9 input channels and up to 8 channels of motor-control PWM, four 16-bit timers, two capture/compare/PWM modules, and a USART. NanoWatt Technology provides multiple power-managed operating modes (Run, Idle, Sleep, and a low-power Timer1 oscillator) to extend battery life. The supply voltage range of 4.2 V to 5.5 V suits 5V-only industrial and appliance designs.
Architecturally, the PIC18F4439 employs a 16-bit instruction word Flash pipeline, a single-cycle hardware multiplier, and a vectored interrupt controller with prioritized sources for deterministic real-time response. The Power Control PWM module is the distinguishing feature: a 14-bit-resolution, multi-channel PWM engine designed specifically for single-phase induction motor (SPIM) commutation, BLDC control, and switch-mode power conversion. This dedicated hardware offloads commutator timing from the CPU, allowing the software stack to handle supervisory tasks.
Typical applications include single-phase induction motor control in washing machines, fans, and pumps, BLDC and PMSM motor control in appliance drives, switched-mode power supply (SMPS) controllers, white goods and HVAC fan controllers, and industrial control boards requiring precise timer-driven PWM. The extended-temperature grade makes it suitable for under-hood automotive auxiliaries and outdoor industrial cabinets. Compared with PIC18F2431/4431 devices, the PIC18F4439 adds ECCP (Enhanced Capture/Compare/PWM) hardware, dead-band control, and a programmable center-aligned PWM mode for advanced motor commutation.
When designing with the PIC18F4439, allocate PCB area for the four power-ground pins and route the PWM output traces away from sensitive analog inputs. Place a 0.1 uF ceramic decoupling capacitor on each VDD/VSS pair as close to the IC as physically possible, and keep the analog AVdd/AVss pair decoupled separately with its own 10 uF bulk plus 0.1 uF high-frequency bypass. Configure the MCLR pin with a 10 kohm pull-up to VDD for reliable reset behavior.
This page synthesizes distributor pricing, drop-in PIC18F-family alternatives in the same 44-TQFP package, and practical design notes that go beyond what is printed in the manufacturer datasheet, helping engineers select, source, and integrate the PIC18F4439-E/PT efficiently.
直接替换替代料： PIC18F4439-E/PT ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： PIC18F4439-E/PT （相同外形与封装尺寸） ——差异在于 Package, ADC, I/O Pins, Operating Temperature, Program Memory (Flash).
快速对比工具——选择替代料号进行并排对比：
PIC18F4439-I/PT
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$5.05 / 个
查看数据手册 →PIC18F4431-I/PT
✅ 直接替换✓ 有现货
$4.79 / 个
查看数据手册 →PIC18F2431-I/PT
✅ 直接替换📋 参考替代料（不在目录中）
PIC18F4420-I/PT
✅ 直接替换📋 参考替代料（不在目录中）
PIC18F4410-I/PT
✅ 直接替换📋 参考替代料（不在目录中）
PIC18F4439-E/PT 最大额定值与电气特性
| Architecture | PIC18F (8-bit data, 16-bit instruction word) |
| Program Memory (Flash) | 12 KB |
| RAM | 640 bytes |
| EEPROM | 256 bytes |
| Maximum CPU Clock | 40 MHz |
| Supply Voltage (VDD) | 4.2 V to 5.5 V |
| I/O Pins | 32 to 36 |
| ADC | 10-bit, up to 9 input channels |
| Motor Control PWM | 14-bit, up to 8 channels (Power Control PWM module) |
| Timers | Four 16-bit timers/counters |
| Capture/Compare/PWM | 2 CCP/ECCP modules |
| Communication | USART/SCI, AUSART, MSSP (SPI/I2C) |
| 封装 | TQFP-44 (PT), 10x10 mm |
| 安装类型 | Surface Mount |
| Temperature Range | -40 C to +125 C (Extended, '-E' grade) |
| Operating Mode | NanoWatt Technology: Run, Idle, Sleep, Timer1 Oscillator |
| Interrupt Controller | Vectored with priority, 17+ sources |
| RoHS 状态 | Compliant |
PIC18F4439-E/PT 引脚配置
| 引脚 1 | RC0/T1OSO/T1CKI — Digital I/O / Timer1 oscillator output / Timer1 clock input |
| 引脚 2 | RC1/CCP2 — Digital I/O / Capture Compare PWM 2 |
| 引脚 3 | RC2/CCP1 — Digital I/O / Capture Compare PWM 1 |
| 引脚 4 | RC3 — Digital I/O |
| 引脚 5 | RC4 — Digital I/O |
| 引脚 6 | RC5 — Digital I/O |
| 引脚 7 | RC6/TX/CK — Digital I/O / USART async transmit / USART sync clock |
| 引脚 8 | RC7/RX/DT — Digital I/O / USART async receive / USART sync data |
| 引脚 9 | RE0/RD — Digital I/O / Parallel slave port read |
| 引脚 10 | RE1/WR — Digital I/O / Parallel slave port write |
| 引脚 11 | RE2/CS — Digital I/O / Parallel slave port chip select |
| 引脚 12 | VDD — Positive supply (4.2 V to 5.5 V) |
| 引脚 13 | VSS — Ground reference |
| 引脚 14 | OSC1/CLKI/RA7 — Crystal oscillator input / external clock input / digital I/O |
| 引脚 15 | OSC2/CLKO/RA6 — Crystal oscillator output / clock output / digital I/O |
| 引脚 16 | RA0/AN0 — Digital I/O / analog channel 0 |
| 引脚 17 | RA1/AN1 — Digital I/O / analog channel 1 |
| 引脚 18 | RA2/AN2/VREF- — Digital I/O / analog channel 2 / ADC VREF- |
| 引脚 19 | RA3/AN3/VREF+ — Digital I/O / analog channel 3 / ADC VREF+ |
| 引脚 20 | RA4/T0CKI — Digital I/O / Timer0 clock input |
| 引脚 21 | RA5/AN4/SS — Digital I/O / analog channel 4 / SPI slave select |
| 引脚 22 | AVDD — Analog positive supply |
| 引脚 23 | AVSS — Analog ground |
| 引脚 24 | RB0/INT0/FLTA — Digital I/O / external interrupt 0 / PWM fault A input |
| 引脚 25 | RB1/INT1 — Digital I/O / external interrupt 1 |
| 引脚 26 | RB2/INT2 — Digital I/O / external interrupt 2 |
| 引脚 27 | RB3/INT3 — Digital I/O / external interrupt 3 |
| 引脚 28 | RB4 — Digital I/O |
| 引脚 29 | RB5 — Digital I/O |
| 引脚 30 | RB6/PGC — Digital I/O / ICSP clock (programming/debug) |
| 引脚 31 | RB7/PGD — Digital I/O / ICSP data (programming/debug) |
| 引脚 32 | PWM0 — Power Control PWM channel 0 output |
| 引脚 33 | PWM1 — Power Control PWM channel 1 output |
| 引脚 34 | PWM2 — Power Control PWM channel 2 output |
| 引脚 35 | PWM3 — Power Control PWM channel 3 output |
| 引脚 36 | PWM4 — Power Control PWM channel 4 output |
| 引脚 37 | PWM5 — Power Control PWM channel 5 output |
| 引脚 38 | RD0/PSP0 — Digital I/O / parallel slave port data 0 |
| 引脚 39 | RD1/PSP1 — Digital I/O / parallel slave port data 1 |
| 引脚 40 | RD2/PSP2 — Digital I/O / parallel slave port data 2 |
| 引脚 41 | RD3/PSP3 — Digital I/O / parallel slave port data 3 |
| 引脚 42 | RD4/PSP4 — Digital I/O / parallel slave port data 4 |
| 引脚 43 | RD5/PSP5 — Digital I/O / parallel slave port data 5 |
| 引脚 44 | MCLR/VPP — Master clear reset input / ICSP programming voltage |
典型应用
PIC18F4439-E/PT 适用于 6 应用s: Single-Phase Induction Motor Control, Brushless DC (BLDC) and PMSM Motor Drives, Switched-Mode Power Supply (SMPS) Controllers, White Goods and HVAC Fan Control, Industrial Control Boards, Automotive Auxiliary Motor Drivers.
Single-Phase Induction Motor Control
The PIC18F4439-E/PT's dedicated 14-bit Power Control PWM module is purpose-built for single-phase induction motor (SPIM) commutation. Its up to 8 PWM channels with programmable dead-band delay and center-aligned mode deliver accurate zero-crossing commutation for washing-machine, fan, and pump drives. The 40 MHz CPU at 10 MIPS handles speed-loop control under 100 us, and the integrated 10-bit ADC samples motor current synchronously to the PWM for closed-loop torque regulation. Compared with discrete PWM controllers, the 4439 reduces BOM cost by combining control logic, gate-driving timers, and ADC in one 44-pin TQFP.
推荐
Brushless DC (BLDC) and PMSM Motor Drives
The PIC18F4439-E/PT is widely deployed in BLDC and permanent-magnet synchronous motor (PMSM) drives for appliance, HVAC, and small industrial equipment. The Power Control PWM provides complementary outputs with hardware dead-band insertion, while the 10-bit ADC samples back-EMF and phase current to support sensorless or hall-sensor commutation. The extended -40C to +125C temperature range ('-E' suffix) supports under-hood automotive auxiliaries and outdoor industrial cabinets. The 44-pin TQFP offers enough I/O for hall sensors, fault inputs, and serial diagnostics within a single compact package.
推荐
Switched-Mode Power Supply (SMPS) Controllers
The PIC18F4439-E/PT's high-resolution PWM and fast interrupt response make it a flexible SMPS controller for digital power conversion. The 14-bit PWM enables precise duty-cycle control at switching frequencies above 100 kHz, while the integrated 10-bit ADC closes the voltage- and current-mode feedback loops with adequate loop bandwidth. Multiple PWM channels can drive synchronous-rectifier half-bridge or full-bridge topologies. Unlike analog UC3842-type controllers, the PIC18F4439 allows firmware-defined compensation, soft-start, and adaptive dead-time, simplifying digital power designs for telecom and industrial DC/DC converters.
推荐
White Goods and HVAC Fan Control
Refrigerator, air-conditioner, and washing-machine compressor boards rely on the PIC18F4439-E/PT for fan and compressor variable-speed control. The combination of 12 KB Flash (sufficient for sensorless FOC or trapezoidal BLDC algorithms) and the extended temperature grade allows the same firmware platform to be reused across refrigerator-freezer and air-handler SKUs. The Power Control PWM's center-aligned mode with programmable dead time reduces switching losses in the IGBT/MOSFET bridge. NanoWatt technology idle and sleep modes keep standby power below regulatory limits for energy-star appliances.
推荐
Industrial Control Boards
Industrial control boards benefit from the PIC18F4439-E/PT's deterministic interrupt response, hardware PWM, and 5V tolerant digital I/O. The 44-pin TQFP provides ample I/O for digital inputs, relay drivers, and serial communication, while the MSSP (SPI/I2C) and USART ease integration with sensors and HMI displays. The extended temperature grade qualifies the device for factory-floor enclosures, and the 12 KB Flash fits typical supervisory control loops. Engineers often pair the 4439 with a dsPIC for compute-intensive DSP, using the 4439 for I/O and motor-control timing.
推荐
Automotive Auxiliary Motor Drivers
Although not AEC-Q100 qualified, the extended-temperature PIC18F4439-E/PT is used in non-safety automotive auxiliary motor applications, including seat adjusters, mirror actuators, and HVAC damper motors. Its 5V supply range matches automotive 12V-bus regulated rails, while the Power Control PWM produces low-EMI commutation. Designers typically add an external CAN or LIN transceiver for body-network integration. For safety-critical automotive motor control, AEC-Q100 qualified parts such as the dsPIC33 series are preferred instead.
推荐
推荐产品汇总
工程参考数据： PIC18F4439-E/PT ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | PIC18F4439-I/PT | PIC18F4431-I/PT | PIC18F2431-I/PT | PIC18F4420-I/PT | PIC18F4410-I/PT |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | TQFP-44 (PT) | TQFP-44 (PT) - same | TQFP-44 (PT) - same | TQFP-44 (PT) - same | TQFP-44 (PT) - same | TQFP-44 (PT) - same |
| Flash Memory | 12 KB | 12 KB | 16 KB | 8 KB | 16 KB | 16 KB |
| RAM | 640 bytes | 640 bytes | 768 bytes | 512 bytes | 768 bytes | 768 bytes |
| Maximum Clock | 40 MHz | 40 MHz | 40 MHz | 40 MHz | 40 MHz | 40 MHz |
| Temperature Grade | -40C to +125C (Extended) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) |
| Power Control PWM | 14-bit, up to 8 channels | 14-bit, up to 8 channels | ECCP 10-bit, 2 channels | ECCP 10-bit, 2 channels | ECCP 10-bit, 2 channels | ECCP 10-bit, 2 channels |
| I/O Pins | 32 to 36 | 32 to 36 | 36 | 28 | 36 | 36 |
| ADC | 10-bit, 9 channels | 10-bit, 9 channels | 10-bit, 9 channels | 10-bit, 5 channels | 10-bit, 13 channels | 10-bit, 13 channels |
关键差异点
- Dedicated 14-bit Power Control PWM for motor commutation （对比 PIC18F4431-I/PT)
- Extended -40C to +125C temperature grade （对比 PIC18F4439-I/PT)
- Larger Flash and RAM than PIC18F2431 （对比 PIC18F2431-I/PT)
设计说明
Place a 0.1 uF ceramic decoupling capacitor within 5 mm of each VDD/VSS pair on the PIC18F4439-E/PT, and add a 10 uF bulk tantalum or ceramic capacitor at the board's power entry. Decouple the analog AVDD/AVSS pair with its own 0.1 uF + 10 uF network to keep digital switching noise out of the ADC reference. Route the PWM outputs as short, impedance-matched traces away from analog inputs, and reserve a continuous ground pour under the MCU for thermal and EMI performance.
Estimated: at 40 MHz CPU clock with all peripherals active, the PIC18F4439-E/PT in TQFP-44 (theta_JA approx 50 C/W on a standard 2-layer board, 1 oz copper) draws about 25 mA, yielding about 0.13 W dissipation. Worst-case junction temperature rise is 6.5 C above ambient - well within the -40 C to +125 C extended rating. For sustained high-PWM applications, add a copper pour under the exposed thermal pad and improve board ventilation.
Do not leave MCLR floating - tie it to VDD through a 10 kohm pull-up, or reset behavior becomes unreliable. Verify the oscillator configuration bits match the physical crystal; a 40 MHz system clock requires a 10 MHz crystal with HS-PLL mode, not HS mode. When migrating code from PIC18F4431, remember the Power Control PWM peripheral has its own register map (PTCON, PTPER, PWMCON) that is NOT identical to the ECCP module - do not assume bit compatibility.
合规信息
RoHS and lead-free compliant per Microchip product packaging markings. Not AEC-Q100 qualified - the extended '-E' temperature grade is industrial, not automotive-grade. Halogen-free status not explicitly stated; default Microchip packaging is typically low-halogen.