PIC18F2439T-I/SO - 12KB Flash 8-bit MCU | Microchip | Motor Control
Référence : PIC18F2439T-I/SO ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $5.95 | $5,95 |
| 10 | $5.36 | $53,60 |
| 100 | $4.76 | $476,00 |
| 500 | $4.29 | $2 145,00 |
| 1 000 | $3.81 | $3 810,00 |
PIC18F2439T-I/SO Présentation
An 8-bit microcontroller (MCU) is a small computer-on-a-chip integrating a CPU, memory, and peripherals on a single die. The PIC18 family sits in the upper tier of Microchip's 8-bit MCU portfolio, providing an enhanced 16-bit instruction word, linear memory addressing, and C-friendly architecture. The motor-control kernel adds hardware PWM, dead-band control, and phase commutation logic, placing it between a generic MCU and a dedicated motor-control DSP in capability.
Key features include a maximum CPU clock of 40 MHz (10 MIPS), 21 general-purpose digital I/O pins, a 10-bit ADC with up to 5 channels, enhanced PWM with up to 3 channels, and a dedicated power-control PWM module. Communication peripherals include I2C, SPI, and USART (RS-485/RS-232 LIN support). The Capture/Compare/PWM (CCP) and Enhanced CCP modules deliver hardware dead-band generation ideal for half-bridge drives.
Typical applications include single-phase induction motor drives, fan and pump controllers, washing-machine universal motor control, small appliance variable-speed drives, ceiling-fan controllers, and HVAC blower control. The integrated motor-control peripheral reduces firmware complexity and BOM cost by replacing external gate-driver timing logic.
When designing with this part, ensure your firmware initializes the motor-control kernel registers correctly and that the brown-out reset voltage is configured for your power-rail characteristics. The wide-body SOIC package provides adequate thermal performance for industrial enclosures, but PCB layout must respect the analog and digital ground separation recommended in the datasheet.
Alternatives de remplacement direct pour PIC18F2439T-I/SO — 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 PIC18F2439T-I/SO (même facteur de forme et même empreinte) — différant par Package, ADC, Core Architecture, Operating Temperature, Timers.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
PIC18F2439-I/SO
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
PIC18F2439-E/SO
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
PIC18F2431-I/SO
✅ Remplacement direct✓ En stock
$4.85 / unité
Voir la fiche technique →DSPIC33FJ12MC202-I/SO
✅ Remplacement direct✓ En stock
$3.85 / unité
Voir la fiche technique →PIC18F2420-I/SO
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
PIC18F242-I/SO
✅ Remplacement direct ⚠️ Spécifications non vérifiées✓ En stock
$3.5 / unité
Voir la fiche technique →PIC18F2439T-I/SO Valeurs maximales et caractéristiques électriques
| Family | PIC18 |
| Series | PIC 18F |
| Core | 8-bit PIC RISC |
| Program Memory | 12 KB (6K x 16) Flash |
| RAM | 640 bytes |
| EEPROM | 256 bytes |
| Maximum CPU Frequency | 40 MHz |
| Instruction Throughput | 10 MIPS |
| Operating Voltage | 2.0 V to 5.5 V |
| I/O Pins | 21 |
| ADC | 10-bit, up to 5 channels |
| PWM Channels | Enhanced PWM, up to 3 channels + dedicated motor-control PWM |
| Communication | I2C, SPI, USART (RS-485/RS-232 LIN) |
| Timers | Multiple 8-bit and 16-bit timers |
| Température de fonctionnement | -40C to +85C (Industrial) |
| Boîtier | 28-pin SOIC (0.295 inch / 7.50 mm width) |
| Type de montage | Surface Mount |
| Statut RoHS | Compliant |
| Niveau MSL | 1 (unlimited floor life) |
Configuration des broches de PIC18F2439T-I/SO
| Broche 1 | RA2/AN2/VREF- — Port A bit 2 / Analog input 2 / ADC negative reference |
| Broche 2 | RA3/AN3/VREF+ — Port A bit 3 / Analog input 3 / ADC positive reference |
| Broche 3 | RA4/AN4 — Port A bit 4 / Analog input 4 |
| Broche 4 | RA5/AN5 — Port A bit 5 / Analog input 5 |
| Broche 5 | VSS — Ground reference |
| Broche 6 | OSC1/CLKI/RA7 — Crystal oscillator input / external clock input / Port A bit 7 |
| Broche 7 | OSC2/CLKO/RA6 — Crystal oscillator output / clock output / Port A bit 6 |
| Broche 8 | RC0/T1OSO/T1CKI — Port C bit 0 / Timer1 oscillator output / Timer1 clock input |
| Broche 9 | RC1/T1OSI — Port C bit 1 / Timer1 oscillator input |
| Broche 10 | RC2/CCP1 — Port C bit 2 / Capture/Compare/PWM channel 1 |
| Broche 11 | RC3 — Port C bit 3 |
| Broche 12 | RC4 — Port C bit 4 |
| Broche 13 | RC5 — Port C bit 5 |
| Broche 14 | RC6/TX/CK — Port C bit 6 / USART transmit / USART clock |
| Broche 15 | RC7/RX/DT — Port C bit 7 / USART receive / USART data |
| Broche 16 | RB0/INT0 — Port B bit 0 / External interrupt 0 |
| Broche 17 | RB1/INT1 — Port B bit 1 / External interrupt 1 |
| Broche 18 | RB2 — Port B bit 2 |
| Broche 19 | RB3 — Port B bit 3 |
| Broche 20 | RB4 — Port B bit 4 |
| Broche 21 | RB5 — Port B bit 5 |
| Broche 22 | RB6/PGC — Port B bit 6 / ICSP clock |
| Broche 23 | RB7/PGD — Port B bit 7 / ICSP data |
| Broche 24 | VSS — Ground reference (second pin) |
| Broche 25 | VDD — Positive supply voltage |
| Broche 26 | MCLR/VPP — Master clear reset / programming voltage |
| Broche 27 | RA0/AN0 — Port A bit 0 / Analog input 0 |
| Broche 28 | RA1/AN1 — Port A bit 1 / Analog input 1 |
Applications typiques
PIC18F2439T-I/SO convient pour 6 applications: Single-Phase Induction Motor Drives, Fan Speed Controllers, Pump Variable-Frequency Drives, Washing-Machine Motor Control, HVAC Blower Speed Controllers, Small Appliance Variable-Speed Drives.
Single-Phase Induction Motor Drives
The PIC18F2439T-I/SO is purpose-built for single-phase induction motor variable-frequency drives, leveraging its dedicated hardware motor-control kernel to generate sinusoidal PWM with hardware dead-band insertion. The 12 KB Flash holds motor-state-machine firmware plus speed PI controller, while the 10 MIPS throughput closes the current loop within 100 usec. Placed between the rectifier/DC bus and the IGBT/MOSFET inverter stage, the MCU directly drives the gate-driver stage without external commutation logic. Unlike a generic PIC18F2420-I/SO, the integrated kernel eliminates firmware PWM timing jitter, improving torque ripple and audible noise versus pure software implementations.
Recommandé
Fan Speed Controllers
Ceiling fans, exhaust fans, and PC cooling fans benefit from the PIC18F2439T-I/SO's 12 KB Flash and integrated PWM kernel for stepless speed control. The 10-bit ADC samples back-EMF or current-sense signals for closed-loop regulation, while the PWM module generates the variable-frequency drive waveform at up to 20 kHz for inaudible operation. Placed inline with the TRIAC or MOSFET switching element, the MCU provides soft-start and overcurrent protection. Compared to a discrete 555-timer-based controller, the PIC18F2439T-I/SO adds programmable acceleration ramps and remote-control interfaces via UART/IR.
Recommandé
Pump Variable-Frequency Drives
Water pumps and circulation pumps use the PIC18F2439T-I/SO to implement constant-pressure or constant-flow control via integrated motor-control PWM. The 640-byte RAM accommodates the PID controller state, while the 12 KB Flash holds fault-detection routines (dry-run, overcurrent, over-temperature). The 21 I/O pins interface pressure transducers, flow sensors, and HMI keypads without external I/O expanders. Placed between the line-voltage sensing circuit and the inverter power stage, the MCU provides 16-bit timer resolution for accurate flow control versus 8-bit MCU alternatives.
Recommandé
Washing-Machine Motor Control
Washing machines use the PIC18F2439T-I/SO for universal motor and single-phase induction motor control, where the dedicated kernel handles wash/spin cycle torque profiles and drum-balancing algorithms. The 40 MHz CPU closes the speed-control loop in under 200 usec, and the 12 KB Flash holds drum-imbalance detection routines and UI state machines. Placed between the AC-zero-cross detect circuit and the TRIAC/inverter stage, the MCU orchestrates the full wash cycle. Compared to discrete analog controllers, the PIC18F2439T-I/SO adds EEPROM-backed cycle memory and LIN-bus connectivity for appliance networking.
Recommandé
HVAC Blower Speed Controllers
HVAC blower motors benefit from the PIC18F2439T-I/SO's integrated motor-control kernel for smooth multi-speed control, ramp-up/ramp-down, and stall detection. The 21 I/O pins interface thermostat inputs, mode-control relays, and tachometer feedback signals without external glue logic. Placed between the 24 VAC control signal conditioning and the blower relay/inverter stage, the MCU executes the heating/cooling blower profile. The 640-byte RAM holds the state machine for auto-mode transitions, and the -40C to +85C industrial temperature rating supports unconditioned attic installations.
Recommandé
Small Appliance Variable-Speed Drives
Blenders, food processors, and power tools use the PIC18F2439T-I/SO to provide soft-start, speed-feedback, and overload protection for universal motors. The integrated PWM module drives the TRIAC phase-angle control directly via hardware, while the 10-bit ADC samples motor current for torque-limiting algorithms. Placed between the speed-control potentiometer and the TRIAC gate driver, the MCU handles ramp-up, brake, and pulse modes. The 12 KB Flash supports custom speed profiles stored in EEPROM for repeatable operation. Compared to a discrete analog phase controller, the PIC18F2439T-I/SO adds adaptive braking and stall recovery.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour PIC18F2439T-I/SO — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | PIC18F2439-I/SO | PIC18F2439-E/SO | PIC18F2431-I/SO | DSPIC33FJ12MC202-I/SO | PIC18F2420-I/SO |
|---|---|---|---|---|---|---|
| Package | 28-pin SOIC (0.295 inch / 7.50 mm) | 28-pin SOIC - same | 28-pin SOIC - same | 28-pin SOIC - same | 28-pin SOIC - same | 28-pin SOIC - same |
| Brand | Microchip Technology | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same |
| Program Memory | 12 KB Flash | 12 KB Flash - same | 12 KB Flash - same | 16 KB Flash (+33%) | 12 KB Flash - same | 16 KB Flash (+33%) |
| Motor-Control Kernel | Single-phase induction (hardware) | Single-phase induction (hardware) - same | Single-phase induction (hardware) - same | Three-phase BLDC (hardware) | Three-phase motor control (16-bit dsPIC) | None (general-purpose MCU) |
| Core Architecture | 8-bit PIC18 (10 MIPS @ 40 MHz) | 8-bit PIC18 - same | 8-bit PIC18 - same | 8-bit PIC18 - same | 16-bit dsPIC33 (40 MIPS @ 40 MHz) | 8-bit PIC18 - same |
| Maximum Clock Frequency | 40 MHz | 40 MHz - same | 40 MHz - same | 40 MHz - same | 40 MHz - same | 40 MHz - same |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C - same | -40C to +125C (Extended) | -40C to +85C - same | -40C to +85C - same | -40C to +85C - same |
| ADC Resolution | 10-bit | 10-bit - same | 10-bit - same | 10-bit - same | 10-bit - same | 10-bit - same |
| I/O Pins | 21 | 21 - same | 21 - same | 21 - same | 21 - same | 23 (+2) |
Principaux différenciateurs
- Dedicated hardware single-phase motor-control kernel (vs PIC18F2420-I/SO)
- Higher 12 KB Flash versus lower-memory siblings (vs PIC18F2331-I/SP)
- Single-phase focus versus three-phase variants (vs PIC18F2431-I/SO)
Notes de conception
Estimated: At 40 MHz CPU clock and full peripheral activity (PWM + ADC + UART), VDD current draw is approximately 25 mA per the Microchip datasheet typical characteristics. Add a 100 nF ceramic decoupling capacitor directly at each VDD/SS pair (pins 25/24 and 1/5) within 3 mm of the package, plus a bulk 10 uF tantalum at the board power entry. The wide-body SOIC handles typical MCU dissipation without a heatsink but ensure supply trace width carries 50 mA peak without voltage drop.
The 28-pin SOIC wide-body footprint follows JEDEC MS-013 with 1.27 mm pin pitch. Recommended land pattern is per IPC-7351 nominal density with pad width 0.6 mm and length 1.7 mm per pin. Keep analog signal traces (AN0-AN5) away from PWM output traces (RC2/CCP1) to minimize coupled noise. Provide a single-point ground connection between digital ground and analog ground, with the ADC VREF+ bypassed by 10 uF + 100 nF ceramic capacitors.
Critical: The PIC18F2439T-I/SO single-phase motor-control kernel registers must be initialized in the order specified in the datasheet, otherwise the PWM outputs may latch in an undefined state at startup, potentially driving the inverter bridge into shoot-through. Brown-out reset voltage should be configured to 4.5V for 5V systems or 2.85V for 3.3V systems. The MCLR pin (pin 26) requires a 10 kohm pull-up to VDD; do not leave it floating or the device may reset intermittently during motor switching transients.
For motor-control applications where switching transients can reach 50 V/usec on the inverter, place the MCU at least 25 mm from the IGBT/MOSFET switching stage and route PWM outputs RC2/CCP1 with a ground-referenced coplanar waveguide or guarded trace. The analog sense inputs (AN0-AN5) should be RC-filtered with 100 ohm series + 1 nF shunt to ground, with cutoff around 1.6 MHz, well above the PWM fundamental but below MCU clock harmonics.
Informations de conformité
RoHS compliant and lead-free per Microchip product page. Not AEC-Q100 qualified - this is an industrial-grade MCU; for automotive motor control consider PIC18F2431-E/SO extended-temperature variants or dsPIC33 automotive AEC-Q100 grades.
