DSPIC33EP32MC504-I/ML - 70 MIPS 16-bit DSC, QFN-44 | Microchip
MPN: DSPIC33EP32MC504-I/ML ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.2 | $4.20 |
| 10 | $3.78 | $37.80 |
| 100 | $3.36 | $336.00 |
| 500 | $2.98 | $1,490.00 |
| 1,000 | $2.65 | $2,650.00 |
DSPIC33EP32MC504-I/ML Overview
A digital signal controller combines the compute architecture of a microcontroller with DSP capability: a 16-bit modified Harvard core, hardware multiply-accumulate (MAC), barrel shifter, and single-cycle division support. DSCs sit between general-purpose MCUs and dedicated DSPs in the signal-processing hierarchy, making them the preferred choice for closed-loop real-time control such as field-oriented motor control and digital power conversion.
Key features of this part include an integrated MCPWM motor-control PWM module with complementary outputs and dead-time control, three on-chip operational amplifiers, four analog comparators, a 10-bit ADC, quadrature encoder interface (QEI), one CAN module for industrial networking, and four DMA channels that offload data movement from the CPU.
Architecturally, the dsPIC33EP core uses an enhanced pipelined C compiler-friendly instruction set with DSP multiply-accumulate instructions, supporting fast execution of PI and Park/Clarke transform loops. The on-chip op amps can be configured as current-sense amplifiers feeding the ADC, reducing external component count in inverter designs.
Typical applications include brushless DC (BLDC) and permanent-magnet synchronous motor (PMSM) drives, digital SMPS and power-factor-correction converters, and industrial automation nodes using CAN. The QEI input directly interfaces rotary encoders for servo positioning.
When designing with this device, use any matched PGECx/PGEDx pair consistently for ICSP programming, connect all VDD/VSS pins, and budget Flash carefully since the 32 KB program memory can be limiting with complex field-oriented control plus communication stacks.
This page synthesizes distributor data, same-family drop-in alternatives, and practical design guidance not found in the manufacturer datasheet.
Drop-in alternatives for DSPIC33EP32MC504-I/ML — 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 DSPIC33EP32MC504-I/ML (same form factor and footprint) — differing in Package, Operating Temperature, Core, Flash Program Memory, RAM.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33EP32MC504-E/MV
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$3.35 / Unit
View Datasheet →DSPIC33EP32MC504-E/ML
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP64MC504-I/ML
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP16MC504-I/ML
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP32MC504-I/PT
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33EP32MC504-I/ML Maximum Ratings & Electrical Characteristics
| Core | dsPIC33E 16-bit DSC core |
| Core Clock Frequency | 60 MHz |
| Instruction Rate | 70 MIPS |
| Flash Program Memory | 32 KB |
| RAM | 4 KB |
| Package | QFN-44 (ML) |
| Number of Pins | 44 |
| Timers | 5 |
| DMA Channels | 4 |
| Op Amps | 3 on-chip |
| Comparators | 4 |
| MCPWM Module | Yes (motor-control PWM) |
| Quadrature Encoder Interface | Yes |
| CAN | Yes (1 module) |
| Operating Temperature | -40C to +85C (industrial, I-suffix) |
| Mounting Type | Surface Mount |
| Programming Interface | ICSP via PGECx/PGEDx pairs |
DSPIC33EP32MC504-I/ML qfn-44 (ml) Pin Configuration Guide
Pin configuration for DSPIC33EP32MC504-I/ML (qfn-44 (ml) 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 DSPIC33EP32MC504-I/ML.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33EP32MC504-I/ML is suitable for 6 applications: BLDC / PMSM Motor Drives, Digital Power Conversion (SMPS / PFC), Industrial Automation and CAN Networking Nodes, Servo and Motion Positioning Systems, E-mobility and Light Electric Vehicle Controllers, Sensor Fusion and Embedded Signal Processing.
BLDC / PMSM Motor Drives
The DSPIC33EP32MC504-I/ML is purpose-built for brushless DC and permanent-magnet synchronous motor control. Its MCPWM module generates complementary, dead-time-controlled PWM for three-phase inverters, while the three on-chip op amps amplify shunt-resistor current signals directly into the ADC, eliminating external amplifier ICs. Four analog comparators provide cycle-by-cycle overcurrent protection for fault resilience. The quadrature encoder interface (QEI) reads position feedback for closed-loop servo operation. In a typical field-oriented control (FOC) loop, the 70 MIPS DSP core executes PI current controllers with hardware MAC instructions at switching frequencies of 20 kHz or higher with deterministic latency. Compared with a generic MCU, the integrated analog front end reduces BOM cost and board area in industrial drives, e-bike controllers, and servo amplifiers.
Recommended
Digital Power Conversion (SMPS / PFC)
In switch-mode power supplies and power-factor-correction stages, the DSPIC33EP32MC504-I/ML acts as a digital controller replacing analog control loops. The high-resolution MCPWM outputs drive buck, boost, or LLC converters, and the four comparators implement fast overcurrent trip without CPU intervention. The 70 MIPS core sustains control-loop update rates that keep voltage and current regulation stable at hundreds of kilohertz switching frequencies, and the 10-bit ADC with DMA channel support streams sampled waveforms into RAM without core loading. The 3.0-3.6 V supply and industrial -40C to +85C rating suit telecom rectifiers, server PSU subassemblies, and solar micro-inverter control boards where the on-chip CAN module additionally links the converter to system telemetry buses.
Recommended
Industrial Automation and CAN Networking Nodes
The integrated CAN module makes the DSPIC33EP32MC504-I/ML a strong fit for industrial automation nodes such as conveyor controllers, pump stations, and actuator drivers that must communicate over CAN bus. In these systems, the DSC simultaneously closes local control loops with its 70 MIPS core and exchanges status and command frames on the network, with the four DMA channels keeping communication buffers serviced without CPU overhead. The five timers coordinate task scheduling and PWM updates. Its industrial temperature grade and robust peripheral set allow it to replace an MCU-plus-DSP two-chip solution, cutting board space and firmware complexity in factory automation retrofits and distributed I/O modules.
Recommended
Servo and Motion Positioning Systems
For servo drives and motion positioning axes, the DSPIC33EP32MC504-I/ML combines the QEI for incremental encoder input, the MCPWM for inverter drive, and DSP math capability for cascaded position-velocity-current loops. The 70 MIPS core executes the full cascade with headroom, and the barrel shifter accelerates scaling operations in fixed-point control math. Four DMA channels offload ADC results from current and position sampling. The 44-pin QFN-44 package provides enough I/O for limit switches, brake control, and safety interlocks in a compact footprint suitable for integrated motor modules. Typical end products include robotics joints, CNC spindle drives, and laboratory positioning stages requiring repeatable microstep-accurate motion.
Recommended
E-mobility and Light Electric Vehicle Controllers
Light electric vehicles such as e-bikes, e-scooters, and small EV auxiliary drives require compact, efficient motor controllers with communication. The DSPIC33EP32MC504-I/ML integrates everything needed: MCPWM with dead time for the three-phase bridge, on-chip op amps for phase current sensing, comparators for hardware overcurrent shutdown, and CAN for vehicle bus integration with battery management and display units. The 60 MHz clock supports sensorless back-EMF estimation algorithms, while the 32 KB Flash is adequate for compact traction firmware. Designers targeting extreme under-hood temperatures should select the pin-compatible -E extended-temperature variant rated to +125C without PCB changes.
Recommended
Sensor Fusion and Embedded Signal Processing
Beyond motor control, the DSP engine of the DSPIC33EP32MC504-I/ML suits embedded signal-processing tasks: digital filtering of sensor streams, FFT-based vibration monitoring, and audio-band processing. The hardware MAC and dual operand fetches execute FIR and IIR filters efficiently, while the 10-bit ADC with DMA streams data continuously. The 4 KB RAM accommodates moderate filter buffers and FFT work arrays within the 32 KB Flash application image. Its three op amps can precondition microphone, accelerometer, or current-transformer signals before digitization. In predictive-maintenance nodes and portable instrumentation, this single-chip approach replaces separate MCU and DSP devices, reducing cost, power, and firmware coordination overhead.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33EP32MC504-I/ML — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33EP32MC504-E/MV | DSPIC33EP32MC504-E/ML | DSPIC33EP64MC504-I/ML | DSPIC33EP16MC504-I/ML | DSPIC33EP32MC504-I/PT |
|---|---|---|---|---|---|---|
| Package | QFN-44 (ML) | QFN-44 (ML) - same | QFN-44 (ML) - same | QFN-44 (ML) - same | QFN-44 (ML) - same | TQFP-44 - same pin function, different land pattern |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Program Memory | 32 KB | 32 KB | 32 KB | 64 KB | 16 KB | 32 KB |
| Core Performance | 70 MIPS at 60 MHz | 70 MIPS at 60 MHz | 70 MIPS at 60 MHz | 70 MIPS at 60 MHz | 70 MIPS at 60 MHz | 70 MIPS at 60 MHz |
| Operating Temperature | -40C to +85C (industrial) | -40C to +125C (extended) | -40C to +125C (extended) | -40C to +85C (industrial) | -40C to +85C (industrial) | -40C to +85C (industrial) |
| Op Amps / Comparators | 3 op amps / 4 comparators | 3 op amps / 4 comparators | 3 op amps / 4 comparators | 3 op amps / 4 comparators | 3 op amps / 4 comparators | 3 op amps / 4 comparators |
| CAN / QEI / MCPWM | Yes / Yes / Yes | Yes / Yes / Yes | Yes / Yes / Yes | Yes / Yes / Yes | Yes / Yes / Yes | Yes / Yes / Yes |
Key Differentiators
- Integrated analog front end (3 op amps + 4 comparators) (vs DSPIC33EP32GP504)
- Extended-temperature drop-in option (vs DSPIC33EP32MC504-E/MV)
- Memory headroom upgrade path (vs DSPIC33EP64MC504-I/ML)
Design Notes
The QFN-44 (ML) leadless package requires a well-defined thermal pad array on the PCB land pattern. Connect all VDD and VSS pins as required by the datasheet; skipping a power pin is a common cause of sporadic resets in QFN dsPIC designs. Place 0.1 uF ceramic decoupling capacitors at every VDD pin within 2 mm, plus one bulk 4.7-10 uF capacitor. For rework considerations, the leadless ML package is harder to rework than the TQFP -I/PT variant, which matters during prototyping.
Programming and debugging require a MATCHED PGECx/PGEDx pair: if PGEC2 carries ICSPCLK, ICSDAT must be on PGED2. Mixing pairs from different indexes is a frequent bring-up failure. Additionally, allocate Flash conservatively: 32 KB accommodates compact FOC firmware, but adding a CAN stack plus bootloader can exhaust it - in that case migrate to the pin-compatible DSPIC33EP64MC504-I/ML without PCB changes.
When using the on-chip op amps for motor phase-current sensing, route shunt signals as short differential pairs to the op amp inputs and keep the analog ground return separate from the PWM gate-drive return to avoid switching noise corrupting ADC readings. The four comparators used for overcurrent trip respond within the switching period, so their reference dividers should be locally filtered with 1 nF-10 nF capacitors to prevent false trips from layout-induced glitches.
Estimated: at 60 MHz with all analog blocks active, the DSPIC33EP32MC504-I/ML typically dissipates well under 0.5 W, so the QFN-44 land pattern's thermal vias to a ground plane are normally sufficient without a heatsink. Verify against the datasheet current-consumption tables for your exact clock and peripheral configuration; the industrial -40C to +85C grade leaves margin, but if your enclosure exceeds 85C ambient, switch to the -E/MV variant rated to +125C.
Compliance Information
Compliance data not present in the provided web data; verify RoHS/REACH status on the Microchip product page or distributor compliance documents before export-controlled sourcing.
