DSPIC33FJ128MC510A-I/PF - 16-bit DSC 40MIPS 128KB Flash Motor Control MCU | Microchip
MPN: DSPIC33FJ128MC510A-I/PF ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $12.45 | $12.45 |
| 10 | $11.2 | $112.00 |
| 100 | $9.85 | $985.00 |
| 500 | $8.95 | $4,475.00 |
| 1,000 | $8.1 | $8,100.00 |
DSPIC33FJ128MC510A-I/PF Overview
What is a Digital Signal Controller? A DSC is a hybrid device that combines a microcontroller's deterministic interrupt-driven control capability with a DSP's high-throughput math engine (MAC, barrel shifter, saturating arithmetic). In the power management taxonomy, a DSC sits between a microcontroller (which only handles scalar control loops) and a dedicated DSP (which excels at streaming math but lacks deterministic I/O). The dsPIC33F family in particular was designed for closed-loop motor control and power conversion, where PID compensation, Park/Clarke transforms, and space-vector PWM must run on a deterministic schedule. By merging these workloads, a DSC eliminates the cost, board area, and inter-IC latency of pairing an MCU with a separate DSP.
Key features of the DSPIC33FJ128MC510A include a 40 MHz internal oscillator with PLL (yielding 80 MHz / 40 MIPS), dual 16-bit ADC modules with up to 32 ADC channels and 1.1 Msps conversion rate, six PWM channels with 7 ns resolution for high-frequency switching, dedicated quadrature encoder interface, CAN 2.0B controller, three UART/SPI/I2C modules, and a built-in 16-bit motor control PWM peripheral with complementary outputs and dead-time control.
Architecturally, the device uses a modified Harvard bus with 24-bit instruction words, dual-port SRAM, a hardware multiply-accumulate unit, and a 40-bit accumulator with saturation logic. The 'MC' product line adds motor-control-specific peripherals (PWM, QEI, ADC triggering) directly to the silicon, so a single chip can sense three-phase currents, run field-oriented control at 20 kHz, and drive the inverter bridge without external logic.
Typical applications include sensorless and sensored brushless DC motor drives, 3-phase induction motor control, switched reluctance motor control, digital uninterruptible power supplies, and power factor correction converters. The wide operating voltage range and industrial temperature grade make it well-suited for factory automation drives, robotic actuators, and HVAC compressor control.
When designing with this DSC, follow the motor-control reference design in Microchip application note AN1078 (sensorless PMSM) or AN1299 (sensored BLDC) to avoid common pitfalls in current sampling, dead-time insertion, and ADC-to-PWM synchronization. Allocate DMA channels carefully because the dual ADC modules can saturate the DMA bus during multi-channel scanning.
This page synthesizes distributor stock and pricing data, parametric drop-in alternatives in the same 100-TQFP footprint, and practical PCB-layout/design notes not found in the standalone datasheet.
Drop-in alternatives for DSPIC33FJ128MC510A-I/PF — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with DSPIC33FJ128MC510A-I/PF (same form factor and footprint) — differing in Operating Temperature, Package, ADC, Core Architecture, PWM Channels.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33FJ128MC510A-E/PF
✅ Drop-In✓ In Stock
$7.65 / Unit
View Datasheet →DSPIC33FJ128MC510A-H/PF
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33FJ128MC510A-E/PT
✅ Drop-In✓ In Stock
$5.45 / Unit
View Datasheet →DSPIC33FJ128MC510A-I/PT
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33FJ128MC510A-H/PT
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33FJ128MC510A-I/PF Maximum Ratings & Electrical Characteristics
| Core Architecture | dsPIC33F (16-bit modified Harvard) |
| Core Type | 16-bit Digital Signal Controller (DSC) |
| Maximum CPU Speed | 40 MIPS (80 MHz with PLL) |
| Program Memory | 128 KB Flash |
| Data Memory (RAM) | 16 KB SRAM |
| Operating Voltage | 3.0 V to 3.6 V |
| Operating Temperature | -40 C to +85 C (Industrial) |
| Package | 100-pin TQFP (14x14 mm) |
| Mounting Type | Surface Mount |
| ADC | Dual 16-bit SAR, 32 channels, 1.1 Msps |
| PWM Channels | 6 channels, 7 ns resolution, complementary outputs with dead-time |
| Communication | 1x CAN 2.0B, 3x UART, 2x SPI, 1x I2C |
| Quadrature Encoder Interface (QEI) | Yes |
| DMA | 8-channel DMA |
| Instruction Set | 16-bit DSC with DSP instructions (MAC, barrel shifter) |
| RoHS Status | Compliant |
| MSL Level | 3 (168 hours) |
DSPIC33FJ128MC510A-I/PF 100-pin tqfp (14x14 mm) Pin Configuration Guide
Pin configuration for DSPIC33FJ128MC510A-I/PF (100-pin tqfp (14x14 mm) package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for DSPIC33FJ128MC510A-I/PF.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33FJ128MC510A-I/PF is suitable for 6 applications: Brushless DC (BLDC) Motor Drive, 3-Phase Induction Motor VFD, Switched Reluctance Motor (SRM) Control, Digital Uninterruptible Power Supply (UPS), Power Factor Correction (PFC) Converter, Robotic Servo and CNC Spindle Drive.
Brushless DC (BLDC) Motor Drive
The DSPIC33FJ128MC510A-I/PF is a strong fit for sensorless and sensored BLDC motor drives because it integrates a 6-channel PWM with 7 ns dead-time resolution, dual 16-bit ADC modules capable of simultaneous 1.1 Msps sampling of three-phase currents, and a quadrature encoder interface for position feedback. Its 40 MIPS performance is sufficient to execute field-oriented control (FOC) at 20 kHz with Park/Clarke transforms and PI current loops on a single chip. The built-in QEI and PWM-triggered ADC conversion eliminates the need for an external FPGA or CPLD to synchronize current sampling to PWM edges, reducing BOM cost.
Recommended
3-Phase Induction Motor VFD
For variable-frequency drives (VFDs) controlling 3-phase induction motors in HVAC, pumps, and industrial machinery, the DSPIC33FJ128MC510A-I/PF delivers the compute and analog bandwidth required for direct torque control (DTC) or indirect field-oriented control (IFOC) loops. The dual 16-bit ADC with simultaneous sampling captures phase currents at the PWM center-aligned instant, which is essential for closed-loop torque estimation at low speeds. With 128 KB Flash, the firmware fits complex V/F profiles, soft-start ramps, and Modbus or CANopen industrial network stacks. The industrial -40 C to +85 C range allows cabinet-mounted VFD deployment.
Recommended
Switched Reluctance Motor (SRM) Control
The DSPIC33FJ128MC510A-I/PF handles switched reluctance motor commutation, where up to six power switches per phase must be sequenced at 20-40 kHz based on rotor position feedback. Its QEI module decodes quadrature signals from optical or Hall-effect position sensors, and the PWM's complementary outputs with programmable dead-time generate non-overlapping gate signals for the asymmetric bridge inverter. The 16 KB SRAM accommodates per-phase current and flux lookup tables, while the DMA engine offloads ADC-to-memory transfers, leaving MIPS free for the torque-sharing function (TSF) algorithm that minimizes torque ripple.
Recommended
Digital Uninterruptible Power Supply (UPS)
In a double-conversion online UPS, the DSPIC33FJ128MC510A-I/PF runs the inverter control loop, output voltage regulation, and battery management simultaneously. The 16-bit ADC samples the output current and DC bus voltage at 1.1 Msps, enabling sub-millisecond dynamic response to load steps. The CAN or UART interfaces allow battery state-of-charge telemetry to be shared with the system BMS. The 128 KB Flash holds sine-PWM generation code, true-RMS metering, and fault-recovery state machines. The part's industrial temperature grade supports server-room and industrial UPS deployment.
Recommended
Power Factor Correction (PFC) Converter
For boost PFC front-ends targeting 0.99 power factor compliance, the DSPIC33FJ128MC510A-I/PF executes average-current-mode control at 100 kHz switching frequency with 40 MIPS headroom for soft-start, brownout recovery, and AC-line cycle-by-cycle current shaping. The 16-bit ADC samples inductor current and rectified AC voltage with 1.1 Msps resolution, supporting THD <5% across 10-100% load. The DMA channels move ADC samples into the control loop without CPU intervention, reducing latency between sensing and PWM update. The 3.0 V to 3.6 V supply and 5 V-tolerant digital pins simplify interface to gate drivers.
Recommended
Robotic Servo and CNC Spindle Drive
The DSPIC33FJ128MC510A-I/PF is well-suited for robotic servo drives and CNC spindle control where multi-axis coordination, position feedback, and CAN bus networking are required. Its QEI module tracks motor position at up to 8 million counts per second, while the 6-channel PWM generates sinusoidal commutation or field-oriented control signals at 20 kHz. The CAN 2.0B controller enables multi-axis daisy-chained communication with the central controller, eliminating point-to-point analog wiring. The 128 KB Flash holds homing routines, PID tuning tables, and CANopen DS402 profile stacks for industrial motion control.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33FJ128MC510A-I/PF — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33FJ128MC510A-E/PF | DSPIC33FJ128MC510A-H/PF | DSPIC33FJ128MC510A-E/PT |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 100-TQFP (14x14) | 100-TQFP (14x14) - same | 100-TQFP (14x14) - same | 100-TQFP (14x14) - same |
| Flash Memory | 128 KB | 128 KB | 128 KB | 128 KB |
| RAM | 16 KB | 16 KB | 16 KB | 16 KB |
| Operating Temperature | -40 C to +85 C (Industrial) | -40 C to +125 C (Extended) | -40 C to +150 C (Automotive) | -40 C to +125 C (Extended) |
| Maximum CPU Speed | 40 MIPS (80 MHz) | 40 MIPS | 40 MIPS | 40 MIPS |
| ADC | Dual 16-bit, 32 ch, 1.1 Msps | Dual 16-bit, 32 ch, 1.1 Msps | Dual 16-bit, 32 ch, 1.1 Msps | Dual 16-bit, 32 ch, 1.1 Msps |
| AEC-Q100 Qualified | No (Industrial grade) | No (Extended grade) | Yes (Automotive grade) | No (Extended grade) |
| CAN 2.0B | Yes | Yes | Yes | Yes |
Key Differentiators
- Integrated motor-control peripherals (vs Generic 16-bit MCU (e.g. PIC24FJ128))
- Industrial temperature grade available across 100-TQFP package (vs DSPIC33FJ128MC204-I/PT (44-pin))
- Silicon revision A errata fixes (vs DSPIC33FJ128MC510-I/PF (non-A))
Design Notes
Use a 3.3 V LDO such as AP2112-3.3 or MIC29150-3.3 to supply VDD and AVDD. Decouple VDD with a 10 uF bulk + 0.1 uF ceramic per pin group, and place the 0.1 uF within 3 mm of each VDD pin. AVDD must be filtered with a ferrite bead and 10 uF/0.1 uF cap pair to keep ADC noise below 1 LSB. Avoid switching the core supply with a DC-DC converter unless the inductor ripple stays below 30 mV peak-peak; otherwise the internal PLL will lose lock above 60 MHz.
Route the analog and digital grounds as separate pours joined at a single point under the IC's AGND/DGND pins. Keep switching PWM traces away from analog current-sense inputs by at least 5 mm, and surround the analog input traces with a guard ring tied to analog ground. The exposed pad on the 100-TQFP is a thermal pad and must be soldered to the ground plane with multiple vias for 1-2 W dissipation. Keep the 80 MHz crystal traces short (<10 mm) and surround them with a ground shield.
Do not rely on the internal 7.37 MHz oscillator for CAN bus timing - use an external 8 MHz crystal or the PLL-driven FRC with CAN clock calibration per AN1249. Always enable the JTAG/SWD programming port in the configuration bits during development and disable it only in production. When migrating between the DSPIC33FJ128MC510A-I/PF and the -E/PF, ensure firmware rebuilds against the correct temperature-grade libraries; the -H/PF requires AEC-Q100 qualification checks on the BOM.
The 6-channel PWM outputs toggle at up to 80 MHz with 1 ns rise time. Place 33 ohm source resistors within 5 mm of the PWM pins to damp reflections on cables to gate drivers. Use differential routing for the QEI A/B signals to reject common-mode noise from the motor. For ADC sampling, place an RC low-pass filter (100 ohm + 470 pF) on each current-sense input to limit bandwidth below 500 kHz and prevent aliasing of PWM-edge transients.
Compliance Information
RoHS and REACH compliant per Microchip product page. The -I/PF industrial grade is NOT AEC-Q100 qualified; choose the -H/PF variant for AEC-Q100 automotive applications. Lead-free and halogen-free per Microchip material declaration.
