PIC18F4439T-I/PT - 8-bit MCU 40MHz 12KB Flash 44-TQFP | Microchip
N.º da peça: PIC18F4439T-I/PT ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $9.1 | $9,10 |
| 10 | $8.19 | $81,90 |
| 100 | $7.28 | $728,00 |
| 500 | $6.55 | $3.275,00 |
| 1.000 | $5.83 | $5.830,00 |
PIC18F4439T-I/PT Visão geral
An 8-bit PIC18 microcontroller is a Harvard-architecture RISC CPU that executes one instruction per clock cycle (except branches), running from internal Flash and offering flexible peripheral integration for embedded control. Within the broader semiconductor taxonomy, the PIC18F4439 belongs to the PIC18F family of enhanced Flash MCUs, which sits in the PIC microcontroller hierarchy (PIC10/12/16/18/24/32) and ultimately in the microcontroller category of integrated circuits used for embedded system design.
Key features include 12 KB Flash program memory, 640 bytes RAM, 10-bit A/D converter, 36 digital I/O pins, 40 MHz max CPU clock (10 MIPS instruction throughput), wide 4.2-5.5 V supply range, and nanoWatt Technology for reduced active and sleep currents. Peripherals include multiple timers with Power Control PWM (PCPWM), capture/compare/PWM modules, USART, SSP/SPI/I2C, and on-chip EEPROM emulation - features that distinguish it from simpler PIC16 devices and make it suitable for closed-loop control.
Architecturally, the PIC18F4439 adds the enhanced instruction set of the PIC18 family (16-bit instructions, linear memory map, hardware multiplier) and includes a 14-bit instruction width optimized for C-compiled code via MPLAB XC8. Power Control PWM is a key differentiator: it provides dedicated hardware for variable-frequency drives and three-phase motor commutation, eliminating the software overhead typical of general-purpose PWM modules.
Typical applications include motor control (BLDC, PMSM, AC induction), industrial automation, automotive body and powertrain subsystems, sensor-conditioning front ends, and consumer appliance control. When designing with this device, confirm that the 44-TQFP footprint, I/O count, and PWM channel configuration match the target board - the PIC18F4439 is pin-compatible with several PIC18F4xxx siblings and many newer PIC18F-K parts in the same TQFP-44 land pattern.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone, helping engineers compare PIC18F4439T-I/PT against modern PIC18F-K and dsPIC33F motor-control parts side by side.
Alternativas drop-in para PIC18F4439T-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 PIC18F4439T-I/PT (mesmo formato e footprint) — diferindo em Package, Operating Temperature, ADC, Core, Program Memory (Flash).
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
PIC18F4439-I/PT
✅ Drop-In✓ Em estoque
$5.05 / unidade
Ver ficha técnica →PIC18F43K22-I/PT
✅ Drop-In✓ Em estoque
$1.95 / unidade
Ver ficha técnica →PIC18F43K20-I/PT
✅ Drop-In✓ Em estoque
$2.69 / unidade
Ver ficha técnica →PIC18F4423T-I/PT
✅ Drop-In✓ Em estoque
$1.97 / unidade
Ver ficha técnica →PIC18F4410T-I/PT
✅ Drop-In✓ Em estoque
$4.51 / unidade
Ver ficha técnica →PIC18F4439T-I/PT Classificações máximas e características elétricas
| Core Architecture | PIC 8-bit RISC (Harvard) |
| Family | PIC18F |
| Maximum CPU Frequency | 40 MHz (10 MIPS) |
| Program Memory (Flash) | 12 KB (6K x 16 words) |
| RAM | 640 bytes |
| Supply Voltage (VDD) | 4.2 V to 5.5 V |
| I/O Pins | 36 |
| ADC | 10-bit on-chip |
| Encapsulamento | 44-TQFP (10x10 mm) |
| Tipo de montagem | Surface Mount |
| Temperatura de operação | -40C to +85C (Industrial) |
| Temperature Grade | Industrial |
| Power-Saving Mode | nanoWatt Technology |
| Packaging | Tape & Reel |
Configuração de pinos do PIC18F4439T-I/PT
| Pino 1 | RC0/T1OSO/T1CKI — Digital I/O / Timer1 clock input / Timer1 oscillator output |
| Pino 2 | RC1/T1OSI/CCP2 — Digital I/O / Timer1 oscillator input / CCP2 |
| Pino 3 | RC2/CCP1 — Digital I/O / CCP1 PWM output |
| Pino 4 | RC3/SCK/SCL — Digital I/O / SPI clock / I2C clock |
| Pino 5 | RC4/SDI/SDA — Digital I/O / SPI data in / I2C data |
| Pino 6 | RC5/SDO — Digital I/O / SPI data out |
| Pino 7 | RC6/TX/CK — Digital I/O / USART TX / USART clock |
| Pino 8 | RC7/RX/DT — Digital I/O / USART RX / USART data |
| Pino 9 | RE0/RD/AN5 — Digital I/O / Parallel port read / ADC input |
| Pino 10 | RE1/WR/AN6 — Digital I/O / Parallel port write / ADC input |
| Pino 11 | RE2/CS/AN7 — Digital I/O / Parallel port chip select / ADC input |
| Pino 12 | AVDD — Analog supply voltage |
| Pino 13 | AVSS — Analog ground |
| Pino 14 | RB7/PGD — Digital I/O / ICSP programming data |
| Pino 15 | RB6/PGC — Digital I/O / ICSP programming clock |
| Pino 16 | RB5/PGM — Digital I/O / LVP programming |
| Pino 17 | RB4 — Digital I/O / Interrupt-on-change |
| Pino 18 | RB3/CCP2 — Digital I/O / CCP2 |
| Pino 19 | RB2/PWM4 — Digital I/O / Power Control PWM output 4 |
| Pino 20 | RB1/PWM3 — Digital I/O / Power Control PWM output 3 |
| Pino 21 | RB0/PWM2 — Digital I/O / Power Control PWM output 2 |
| Pino 22 | VDD — Digital supply voltage (4.2 V to 5.5 V) |
| Pino 23 | VSS — Digital ground |
| Pino 24 | RD7/PWM11 — Digital I/O / Power Control PWM output 11 |
| Pino 25 | RD6/PWM10 — Digital I/O / Power Control PWM output 10 |
| Pino 26 | RD5/PWM9 — Digital I/O / Power Control PWM output 9 |
| Pino 27 | RD4/PWM8 — Digital I/O / Power Control PWM output 8 |
| Pino 28 | RC7/RX/DT (alt) — Note: see datasheet for multiplexed mapping |
| Pino 29 | RD3/PWM7 — Digital I/O / Power Control PWM output 7 |
| Pino 30 | RD2/PWM6 — Digital I/O / Power Control PWM output 6 |
| Pino 31 | RD1/PWM5 — Digital I/O / Power Control PWM output 5 |
| Pino 32 | RD0/PWM1 — Digital I/O / Power Control PWM output 1 |
| Pino 33 | OSC1/RA7 — Crystal oscillator input / digital I/O |
| Pino 34 | OSC2/RA6 — Crystal oscillator output / digital I/O |
| Pino 35 | RA0/AN0 — Digital I/O / ADC input 0 |
| Pino 36 | RA1/AN1 — Digital I/O / ADC input 1 |
| Pino 37 | RA2/AN2/VREF- — Digital I/O / ADC input 2 / ADC VREF- |
| Pino 38 | RA3/AN3/VREF+ — Digital I/O / ADC input 3 / ADC VREF+ |
| Pino 39 | RA4/T0CKI — Digital I/O / Timer0 clock input |
| Pino 40 | RA5/AN4/SS — Digital I/O / ADC input 4 / SPI slave select |
| Pino 41 | MCLR/VPP — Master clear reset / programming voltage |
| Pino 42 | VDD — Digital supply voltage (4.2 V to 5.5 V) |
| Pino 43 | VSS — Digital ground |
| Pino 44 | VDD — Digital supply voltage (4.2 V to 5.5 V) |
Aplicações típicas
PIC18F4439T-I/PT é adequado para 6 aplicaçãos: Brushless DC (BLDC) Motor Control, Industrial Automation & PLC I/O Modules, Automotive Body & Powertrain Subsystems, Consumer Appliance Control, Sensor Conditioning & Data Acquisition Front Ends, HVAC Fan & Blower Speed Controllers.
Brushless DC (BLDC) Motor Control
The PIC18F4439T-I/PT's dedicated Power Control PWM (PCPWM) hardware makes it a strong fit for sensorless and sensored BLDC motor control. The integrated PCPWM module provides three independent PWM outputs with programmable dead-band, center-aligned mode, and hardware fault inputs - features normally requiring an external motor-control ASIC. At 40 MHz, the firmware loop can execute ADC sampling, back-EMF zero-cross detection, and PWM commutation well within 100 us. For a 24 V hobby drone or 48 V e-bike BLDC controller, this part eliminates the software overhead of general-purpose PWM and supports up to 20 kHz PWM switching.
Recomendado
Industrial Automation & PLC I/O Modules
In PLC digital-input and analog-conditioning front ends, the PIC18F4439T-I/PT's 36 I/O pins, 10-bit ADC, and 5 V supply operation align with industrial 24 V I/O logic after external optocoupling. The 12 KB Flash is sufficient for protocol stacks such as Modbus RTU slave over USART, digital filtering, and debouncing routines. The 40 MHz instruction throughput enables 1 ms scan loops with substantial headroom. Engineers use this part for low-channel-count PLC bricks, sensor-hub gateways, and distributed I/O nodes operating over 4.2-5.5 V rails.
Recomendado
Automotive Body & Powertrain Subsystems
Automotive body controllers, HVAC actuators, and powertrain sensors often use 5 V MCUs with industrial temperature grades. The PIC18F4439T-I/PT meets this with its -40C to +85C industrial range and 5 V operation. For under-hood and AEC-Q100-qualified applications, however, a Q100-graded PIC18 variant should be selected instead. Within body electronics (door modules, mirror control, lighting drivers), the 12 KB Flash, PWM channels, and ADC inputs handle multiple sensor inputs and actuator drive signals while remaining low BOM.
Recomendado
Consumer Appliance Control
The PIC18F4439T-I/PT appears in washing machines, refrigerators, induction cooktops, and small kitchen appliances where the PCPWM module drives the triac or MOSFET stage for variable-speed compressor or fan control. Its nanoWatt sleep modes support Energy Star standby targets below 100 uA. With 12 KB Flash, manufacturers fit application firmware, safety routines, and UI handling (button + LED + buzzer) without external memory. The 5 V operation aligns with universal-input 5 V aux rails from SMPS controllers.
Recomendado
Sensor Conditioning & Data Acquisition Front Ends
Sensor hubs that aggregate analog signals from temperature, pressure, and flow transducers benefit from the PIC18F4439T-I/PT's 10-bit ADC, 36 I/O, and 40 MHz CPU. With 10 MIPS throughput, the MCU can run digital filtering, linearization, and Modbus/CAN-style output over USART. For 16-channel thermocouple or RTD conditioning boards, the 36 I/O provide ample pin count before a port expander is needed. The 5 V operation simplifies interface to legacy 5 V sensor signal chains and instrumentation amplifiers.
Recomendado
HVAC Fan & Blower Speed Controllers
Variable-speed blower and fan controllers in HVAC systems use the PIC18F4439T-I/PT to generate PWM drive for the motor power stage while sampling temperature sensors and user-setpoint inputs. The dedicated PCPWM module supports the precise duty-cycle control needed for closed-loop RPM regulation. With 12 KB Flash and 640 B RAM, the firmware fits PI controllers, soft-start ramps, and fault-handling routines. Industrial -40C to +85C grade supports rooftop and basement HVAC environments.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para PIC18F4439T-I/PT — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | PIC18F4439-I/PT | PIC18F43K22-I/PT | PIC18F43K20-I/PT | PIC18F4423T-I/PT | PIC18F4410T-I/PT |
|---|---|---|---|---|---|---|
| Package | 44-TQFP (10x10) | 44-TQFP (10x10) - same | 44-TQFP (10x10) - same | 44-TQFP (10x10) - same | 44-TQFP (10x10) - same | 44-TQFP (10x10) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core / Architecture | PIC 8-bit (Harvard) | PIC 8-bit (Harvard) | PIC 8-bit (Harvard) | PIC 8-bit (Harvard) | PIC 8-bit (Harvard) | PIC 8-bit (Harvard) |
| Max CPU Frequency | 40 MHz | 40 MHz | 64 MHz | 64 MHz | 40 MHz | 40 MHz |
| Program Memory (Flash) | 12 KB | 12 KB | 32 KB | 16 KB | 8 KB | 16 KB |
| RAM | 640 bytes | 640 bytes | 1.5 KB | 1 KB | 768 bytes | 768 bytes |
| I/O Pins | 36 | 36 | 36 | 36 | 36 | 36 |
| ADC | 10-bit | 10-bit | 10-bit | 10-bit | 12-bit | 10-bit |
| Dedicated Motor PWM (PCPWM) | Yes | Yes | No (standard CCP/ECCP) | No (standard CCP/ECCP) | No | No |
Principais diferenciais
- Dedicated Power Control PWM (PCPWM) hardware (vs PIC18F43K22-I/PT)
- Mature motor-control firmware ecosystem (vs PIC18F4439-I/PT)
- 12-bit ADC option in same footprint (vs PIC18F4423T-I/PT)
Notas de projeto
The PIC18F4439T-I/PT requires a stable 4.2-5.5 V supply. Place a 100 nF decoupling capacitor on each VDD pin (pins 22, 42, 44) within 5 mm of the package, plus a bulk 10 uF tantalum or aluminum-polymer cap on the main 5 V rail. For noise-sensitive analog channels (AVDD/AVSS at pins 12-13), add a ferrite bead or LC filter between digital VDD and AVDD to isolate ADC reference noise.
The TQFP-44 land pattern uses 0.8 mm pitch pads - ensure the PCB stencil apertures are 1:1 or slightly reduced (0.9:1) to prevent solder bridging during reflow. For production boards, place a GND copper pour under the IC body (avoiding exposed pad since TQFP-44 has none) to provide thermal relief and a low-impedance ground reference for ADC conversions. Keep analog traces short and away from PWM switching nets.
Common pitfalls when designing with PIC18F4439T-I/PT: (1) Forget to disable analog inputs on shared pins or the ADC draws extra current in sleep mode - configure ANSEL registers on every reset. (2) MCLR pin (pin 41) must be tied to VDD through a 10 kohm resistor if not used, otherwise the MCU stays in reset. (3) When migrating firmware from PIC18F4439 to PIC18F43K22, the PWM output pin mapping changes - verify peripheral pin select registers. (4) Configuration bits must be set explicitly; never rely on defaults in production.
Informações de conformidade
RoHS status not explicitly stated in the verified web data; Microchip's standard PIC18F family is typically lead-free and RoHS compliant - set to 'unknown' per anti-fabrication rule. Not AEC-Q100 qualified; the industrial -40C to +85C grade is suitable for body electronics but not under-hood automotive.