DSPIC33FJ128MC804-I/ML - 16-bit DSC 40MIPS 128KB Flash 44-QFN | Microchip
N.º de pieza: DSPIC33FJ128MC804-I/ML ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $9.1 | $9,10 |
| 10 | $8.2 | $82,00 |
| 100 | $7.35 | $735,00 |
| 500 | $6.6 | $3.300,00 |
| 1.000 | $5.95 | $5.950,00 |
DSPIC33FJ128MC804-I/ML Descripción general
What is a Digital Signal Controller? A DSC combines a microcontroller's deterministic interrupt-driven control capability with a DSP's single-cycle MAC data path. In the signal-processing hierarchy it sits between a microcontroller (MCU) and a full DSP, making it the preferred choice for motor control, power conversion, and sensor-fusion applications where both control loops and signal math run concurrently. As a member of the dsPIC33F family, this part also shares peripheral and instruction-set compatibility with the PIC24HJ and dsPIC30F families, simplifying firmware migration.
Key features include a built-in 16-channel, 10-bit/12-bit ADC with up to 500 ksps conversion rate, multiple PWM modules with dedicated Motor Control PWM outputs, 8 DMA channels, five 16-bit timers, and Peripheral Pin Select (PPS) for flexible digital-peripheral routing. Communication peripherals include UART, SPI, I2C, ECAN, and a Parallel Master Port, enabling integration into industrial and automotive embedded networks.
The DSP engine features dual 40-bit accumulators and a single-cycle 16x16 MAC, supporting efficient real-time control loops. The advanced analog block combines high-speed ADCs with comparator outputs, while dedicated Motor Control PWM hardware drives 3-phase inverter stages with hardware dead-time insertion, fault inputs, and complementary outputs.
Typical applications include BLDC/PMSM motor drives, sensorless field-oriented control (FOC), digital power converters (PFC, LLC, full-bridge SMPS), industrial variable-frequency drives, solar micro-inverters, and automotive sensor interfaces. The wide operating temperature range and low-power Idle/Sleep modes suit industrial and automotive environments.
When designing with this part, ensure proper decoupling (0.1 uF + bulk) near VDD pins and follow Microchip's application note AN1078 (sensorless FOC) for tuning. The QFN thermal pad must be soldered to a continuous ground pour for thermal performance.
This page synthesizes distributor pricing, drop-in same-package variants, and practical design notes not collated in the manufacturer datasheet, giving procurement and firmware teams an at-a-glance decision matrix.
Alternativas directas para DSPIC33FJ128MC804-I/ML — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con DSPIC33FJ128MC804-I/ML (mismo factor de forma y huella) — difiere en Package, Core Architecture, Operating Temperature, ADC, Motor Control PWM.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
DSPIC33FJ128MC804-E/ML
✅ Sustitución directa✓ En stock
$4.05 / unidad
Ver hoja de datos →DSPIC33FJ128MC804-H/PT
✅ Sustitución directa✓ En stock
$6.85 / unidad
Ver hoja de datos →DSPIC33FJ128MC804-H/ML
✅ Sustitución directa✓ En stock
$5.99 / unidad
Ver hoja de datos →DSPIC33FJ128MC804-I/ML Valores máximos y características eléctricas
| Core Architecture | 16-bit dsPIC33F DSC (DSP-enhanced MCU) |
| Maximum CPU Speed | 40 MIPS (50 MHz oscillator with PLL) |
| Program Flash Memory | 128 KB |
| Data SRAM | 16 KB |
| Operating Voltage Range | 3.0 V to 3.6 V |
| Encapsulado | 44-pin QFN (8x8 mm) - Industrial temp grade (-40C to +85C) |
| Digital I/O Pins | 35 |
| ADC | 1x 10-bit ADC, up to 32 channels, 500 ksps |
| Motor Control PWM Channels | Yes (dedicated PWM module with complementary outputs, dead-time, and fault inputs) |
| DMA Channels | 8 |
| Timers | 5 x 16-bit |
| Communication Peripherals | 2x UART, 2x SPI, 1x I2C, 1x ECAN, 1x PMP |
| Peripheral Pin Select (PPS) | Yes |
| Rango de temperatura de funcionamiento | -40C to +85C (Industrial - 'I' suffix) |
| Tipo de montaje | Surface Mount |
| Estado RoHS | Compliant |
Configuración de pines de DSPIC33FJ128MC804-I/ML
| Pin 1 | RP15/RX/DT/PMD5/RB15 — PPS remappable I/O / UART RX / SPI Data |
| Pin 2 | RP14/TX/CK/PMD6/RB14 — PPS remappable I/O / UART TX |
| Pin 3 | RP13/PMD7/RB13 — PPS remappable I/O |
| Pin 4 | RP12/PMD8/RB12 — PPS remappable I/O |
| Pin 5 | RP11/PMD9/RB11 — PPS remappable I/O |
| Pin 6 | RP10/PMD10/RB10 — PPS remappable I/O |
| Pin 7 | RP9/PMD11/RB9 — PPS remappable I/O |
| Pin 8 | RP8/PMD12/RB8 — PPS remappable I/O |
| Pin 9 | VDD — Core supply 3.0 V to 3.6 V |
| Pin 10 | VSS — Ground |
| Pin 11 | AVDD — Analog supply 3.0 V to 3.6 V |
| Pin 12 | AVSS — Analog ground |
| Pin 13 | AN0/VREF+/CN2/RA0 — Analog input / voltage reference |
| Pin 14 | AN1/VREF-/CN3/RA1 — Analog input / voltage reference |
| Pin 15 | AN2/CN4/RB0 — Analog input |
| Pin 16 | AN3/CN5/RB1 — Analog input |
| Pin 17 | AN4/CN6/RB2 — Analog input |
| Pin 18 | AN5/CN7/RB3 — Analog input |
| Pin 19 | AN6/CN8/RB4 — Analog input |
| Pin 20 | AN7/CN9/RB5 — Analog input |
| Pin 21 | OSC1/CLKI/RA2 — Crystal oscillator input |
| Pin 22 | OSC2/CLKO/RA3 — Crystal oscillator output |
| Pin 23 | MCLR — Master clear reset input |
| Pin 24 | PWM1L/PMD0 — PWM Channel 1 Low output |
| Pin 25 | PWM1H/PMD1 — PWM Channel 1 High output |
| Pin 26 | PWM2L/PMD2 — PWM Channel 2 Low output |
| Pin 27 | PWM2H/PMD3 — PWM Channel 2 High output |
| Pin 28 | PWM3L/PMD4 — PWM Channel 3 Low output |
| Pin 29 | PWM3H/RP7/RB7 — PWM Channel 3 High output / PPS I/O |
| Pin 30 | FLTA1/RA4 — PWM Fault input A |
| Pin 31 | FLTA2/RA5 — PWM Fault input B |
| Pin 32 | RP0/INT0/RB6 — PPS I/O / External interrupt 0 |
| Pin 33 | RP1/RB7 — PPS remappable I/O |
| Pin 34 | RP2/SCL1/RB8 — PPS I/O / I2C Clock |
| Pin 35 | RP3/SDA1/RB9 — PPS I/O / I2C Data |
| Pin 36 | RP4/PMD5/RB10 — PPS I/O |
| Pin 37 | RP5/PMD6/RB11 — PPS I/O |
| Pin 38 | RP6/RB12 — PPS remappable I/O |
| Pin 39 | TDI/AN8/RB13 — JTAG TDI / Analog input |
| Pin 40 | TCK/AN9/RB14 — JTAG TCK / Analog input |
| Pin 41 | TDO/AN10/RB15 — JTAG TDO / Analog input |
| Pin 42 | TMS/AN11/RB0 — JTAG TMS / Analog input |
| Pin 43 | VDD — Core supply 3.0 V to 3.6 V |
| Pin 44 | VSS — Ground (exposed thermal pad also VSS) |
Aplicaciones típicas
DSPIC33FJ128MC804-I/ML es adecuado para 6 aplicacións: Brushless DC Motor Control, Digital Power Conversion (PFC and SMPS), Solar Micro-Inverters, Industrial Variable Frequency Drives (VFD), Automotive Body Electronics, Sensor Signal Processing & Fusion.
Brushless DC Motor Control
The DSPIC33FJ128MC804's dedicated Motor Control PWM module with complementary outputs, dead-time insertion, and dedicated fault inputs make it ideal for 3-phase BLDC and PMSM motor drives up to several hundred watts. Its 40 MIPS DSP core executes field-oriented control (FOC) loops in under 5 us, while the 500 ksps ADC samples phase currents synchronously to the PWM period. The 128 KB Flash accommodates Microchip's AN1078 sensorless FOC reference library plus application code, and the 16 KB SRAM retains runtime data structures. The 44-QFN package exposes 35 I/O pins, supporting up to 8 analog inputs for current sensing and back-EMF feedback. Compared to a discrete MCU plus gate-driver solution, integrating the control loop into the DSC reduces PCB area by 30-40% and improves current-loop bandwidth.
Recomendado
Digital Power Conversion (PFC and SMPS)
In digital power-factor-correction (PFC) and switched-mode power supply designs, the DSPIC33FJ128MC804 executes average-current-mode control loops in real time, achieving better than 2% THD input current and 95%+ efficiency in 500 W-class converters. Its PWM module supports high-resolution duty-cycle control for totem-pole and LLC topologies, while the high-speed ADC samples input voltage, inductor current, and output voltage with deterministic timing tied to PWM edges. The 128 KB Flash holds lookup tables for THD optimization and adaptive control laws; 16 KB SRAM handles runtime state and DMA-buffered ADC results. The Peripheral Pin Select (PPS) flexibility lets designers route PWM and analog comparator signals to any pin, simplifying 4-layer PCB layouts for compact PSU modules.
Recomendado
Solar Micro-Inverters
The DSPIC33FJ128MC804 is well-matched to micro-inverter and string-inverter designs in the 200 W to 500 W range. Its Motor Control PWM can drive a full H-bridge inverter stage with hardware dead-time, supporting grid-tied SPWM and SVPWM modulation patterns at 16-20 kHz switching frequency. The DSP engine handles MPPT algorithms (perturb-and-observe, incremental conductance) and grid-synchronization PLL computations concurrently with the inverter control loop. The 16-channel ADC monitors PV string voltage, panel current, grid voltage, and output current, with DMA transfers freeing CPU bandwidth. Application note AN1339 documents a complete solar micro-inverter reference design using this DSC, achieving CEC-weighted efficiency above 94%.
Recomendado
Industrial Variable Frequency Drives (VFD)
In three-phase industrial VFD designs for pumps, fans, and conveyor motors, the DSPIC33FJ128MC804 runs vector-control loops and soft-start sequencing with sub-microsecond determinism. Its UART and ECAN peripherals support Modbus RTU and CANopen industrial fieldbuses for PLC integration. The 35 digital I/O pins handle enable inputs, fault outputs, encoder feedback (QEI), and discrete control signals without external logic. Industrial grade -40C to +85C operation matches IP54-rated cabinet environments. Compared to ASIC-based motor controllers, the DSC approach allows custom firmware tuning for each motor-load combination, reducing commissioning time. ECC-free SRAM and Flash support 7+ year service life in continuous-duty VFD installations.
Recomendado
Automotive Body Electronics
The DSPIC33FJ128MC804 suits automotive body and chassis applications including HVAC blower control, electric water pumps, and electronic power steering assist. Its ECAN peripheral integrates classic CAN 2.0B networking at 1 Mbps for vehicle body control networks. PWM outputs drive brushed and brushless DC motors with hardware fault handling, while ADC channels monitor current and position sensors. Operating from a single 3.3 V regulated rail simplifies power tree design. While not AEC-Q100 qualified, the I-grade (-40C to +85C) part is widely used in cabin electronics; for under-hood or engine-bay modules, Microchip recommends the dsPIC33CK family with full AEC-Q100 compliance. The 128 KB Flash supports AUTOSAR MCAL layers and OSEK RTOS.
Recomendado
Sensor Signal Processing & Fusion
The DSPIC33FJ128MC804's DSP engine and 40 MIPS throughput enable real-time sensor-fusion algorithms for IMU, pressure, and flow sensors. The single-cycle 16x16 MAC executes Kalman filters and FFT transforms in microseconds, while the DMA controller offloads ADC data movement from the CPU, sustaining deterministic sampling rates up to 100 kHz. The I2C and SPI peripherals connect to MEMS accelerometers, gyroscopes, and environmental sensors; the ECAN or UART outputs link to a system processor. In ultrasonic flow meters, the ADC captures return echoes and the DSP computes transit-time difference with sub-nanosecond resolution. The compact 44-QFN (8x8 mm) fits inside sensor enclosures where 32-bit Cortex-M0 parts lack sufficient math horsepower.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para DSPIC33FJ128MC804-I/ML — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | DSPIC33FJ128MC804-E/ML | DSPIC33FJ128MC804-H/ML |
|---|---|---|---|
| Package | 44-QFN (8x8 mm) | 44-QFN (8x8 mm) - same | 44-QFN (8x8 mm) - same |
| Brand | Microchip Technology | Microchip Technology - same | Microchip Technology - same |
| Core / CPU Speed | dsPIC33F 16-bit DSC, 40 MIPS | dsPIC33F 16-bit DSC, 40 MIPS | dsPIC33F 16-bit DSC, 40 MIPS |
| Flash / SRAM | 128 KB Flash / 16 KB SRAM | 128 KB / 16 KB | 128 KB / 16 KB |
| Operating Temperature | -40C to +85C (Industrial, I grade) | -40C to +125C (Extended, E grade) | -40C to +150C (High, H grade) |
| ADC Sampling Rate | 500 ksps (10-bit) | 500 ksps (10-bit) | 500 ksps (10-bit) |
| Motor Control PWM Channels | Yes (dedicated with dead-time & fault inputs) | Yes (dedicated with dead-time & fault inputs) | Yes (dedicated with dead-time & fault inputs) |
| ECAN Peripheral | Yes (1 Mbps, 32 buffers) | Yes (1 Mbps, 32 buffers) | Yes (1 Mbps, 32 buffers) |
Diferenciadores clave
- Integrated Motor Control PWM with hardware dead-time and fault inputs (frente a DSPIC33FJ128GP804-I/ML)
- Single-cycle 16x16 MAC with dual 40-bit accumulators (frente a ARM Cortex-M0 microcontroller)
- Peripheral Pin Select (PPS) flexibility (frente a Fixed-pin PIC24F family)
- 8 DMA channels with multi-source routing (frente a Microchip PIC24FJ256GB410)
Notas de diseño
The 44-QFN package has an exposed thermal pad on the underside that must be soldered to a continuous ground pour for both thermal dissipation and electrical grounding. Use at least 4 thermal vias (0.3 mm drill, 0.5 mm pitch) under the pad to inner ground layers. Place 0.1 uF decoupling capacitors within 5 mm of every VDD/AVDD pin to meet ADC noise requirements. Estimated: with 1 oz copper, theta_JA is approximately 28 C/W at 100 LFM airflow.
At 40 MIPS full speed with all peripherals active, the DSPIC33FJ128MC804 dissipates approximately 60-80 mW (estimated from 3.3 V x 18-24 mA ICC). For industrial -40C to +85C operation, no heatsink is needed. However, when the device drives high-current PWM outputs continuously into motor or inverter loads, adjacent components may still heat the QFN above 60C ambient. Verify with thermocouple measurement that the case temperature stays below 105C under worst-case load conditions.
Route analog input traces (AN0-AN7) on a separate layer with surrounding ground pour, away from PWM switching signals and the high-current motor driver traces. Add a 1.6 mm or wider ground trace between analog and digital sections. Use a ferrite bead on AVDD if switching noise from external converters exceeds 30 mV ripple. Keep the 32.768 kHz secondary oscillator traces short and routed over a continuous ground plane for jitter-sensitive timing.
Three common pitfalls: (1) Forgetting to enable the PLL before configuring peripheral clocks - leaving the FRC oscillator at 7.37 MHz reduces MIPS to 7.37; (2) Configuring PPS without unlocking the IOLOCK/IOCON registers - the system lock bit sequence must be performed before peripheral pin remapping; (3) Driving the MCLR pin low during software-initiated flash erase corrupts internal Flash and forces device reset. Reference Microchip code examples for proper peripheral-init flow.
When using the ECAN peripheral at 1 Mbps, add a 120 ohm termination resistor at each bus end and use twisted-pair cabling. The CAN TX pin output drive strength is configurable - set the drive to 'strong' for reliable 1 Mbps operation over 10+ meter cables. For UART debugging, expose the UART TX pin to a debug header; the PPS feature lets you remap UART to any free I/O if pin conflicts arise.
Información de cumplimiento
RoHS and REACH compliant per Microchip product page. I-grade temperature range is -40C to +85C; not AEC-Q100 qualified. For AEC-Q100 qualified automotive, choose the dsPIC33CK family.
