DSPIC33EP32MC504-H/ML - 16-bit 70 MIPS DSC, 32KB Flash | Microchip
MPN: DSPIC33EP32MC504-H/ML ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.85 | $3.85 |
| 10 | $3.46 | $34.60 |
| 100 | $3.08 | $308.00 |
| 500 | $2.77 | $1,385.00 |
| 1,000 | $2.48 | $2,480.00 |
DSPIC33EP32MC504-H/ML Overview
A digital signal controller combines the computational architecture of a digital signal processor with the peripheral set and ease of use of a microcontroller. Within the power-management hierarchy of embedded systems, the DSC sits above general-purpose MCUs for control-loop tasks: the dsPIC33E core executes DSP multiply-accumulate instructions, making the family a standard choice for field-oriented motor control, digital power conversion, and sensor-fusion workloads that a conventional 8-bit MCU cannot close at the required loop bandwidth.
Key features include the 70 MIPS dsPIC DSC core, integrated high-speed PWM modules suited to motor-control and power-supply topologies, and on-chip op amps with advanced analog peripherals as highlighted in the dsPIC33EP32MC504 product description. The device runs from a 3.3V supply, matching modern logic rails and battery-backed systems.
Technically, the dsPIC33EP32MC504 is one of the dsPIC33EPXXXMC20X/50X family devices described in the Microchip family data sheet (DS70000657J). The ADC can be configured as 10-bit, 1.1 Msps with four sample-and-hold circuits or 12-bit, 500 ksps with one sample-and-hold, with flexible and independent ADC trigger sources, and up to three op amp/comparator blocks with direct ADC connection. Debugging is supported through multiple PGECx/PGEDx ICSP channel pairs.
Typical applications include brushless DC and PMSM motor control, digital power supplies such as PFC and LLC stages, automotive body and powertrain auxiliaries, and industrial inverters - all cases where high-resolution PWM, fast ADC triggering, and deterministic DSP math must coexist on one chip.
A key design consideration: the H temperature suffix supports extended ambient conditions, but the exposed-pad VQFN must be soldered to a well-coppered ground plane for thermal and ground integrity, and ICSP pairs (PGECx/PGEDx) must be routed as matched pairs per the programming guide.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for DSPIC33EP32MC504-H/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-H/ML (same form factor and footprint) — differing in Flash Program Memory, Package, RAM, ADC Resolution, Core.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33EP32MC504-I/ML
✅ Drop-In✓ In Stock
$2.65 / Unit
View Datasheet →DSPIC33EP64MC504-H/ML
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP128MC504-H/ML
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP256MC504-H/ML
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$3.98 / Unit
View Datasheet →PIC24EP32MC504-H/ML
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP32MC504-H/ML Maximum Ratings & Electrical Characteristics
| Core Architecture | 16-bit dsPIC DSC |
| Core Performance | 70 MIPS |
| Maximum Clock Frequency | 60 MHz |
| Flash Program Memory | 32 KB (10.7K x 24) |
| RAM | 4 KB |
| Supply Voltage | 3.3 V |
| Package | 44-VQFN Exposed Pad |
| Pin Count | 44 |
| ADC Resolution | 10-bit (1.1 Msps, 4 S&H) or 12-bit (500 ksps, 1 S&H) |
| Op Amps / Comparators | Up to 3 op amp/comparators with direct ADC connection |
| High-Speed PWM | Yes (motor-control oriented) |
| ICSP Debug Channels | Multiple PGECx/PGEDx pairs |
| Qualification | AEC-Q100 (automotive) |
| Temperature Range | -40C to +125C (H suffix) |
| Technology | CMOS |
| Application Segment | Automotive, motor control, digital power |
DSPIC33EP32MC504-H/ML 44-vqfn exposed pad Pin Configuration Guide
Pin configuration for DSPIC33EP32MC504-H/ML (44-vqfn exposed pad 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-H/ML.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33EP32MC504-H/ML is suitable for 6 applications: BLDC / PMSM Motor Control, Digital Power Conversion, Automotive Body Electronics, Industrial Inverters and Drives, Digital Audio and Signal Processing Nodes, Sensor Fusion and Smart Actuators.
BLDC / PMSM Motor Control
The DSPIC33EP32MC504-H/ML fits brushless DC and permanent-magnet synchronous motor control because its 70 MIPS dsPIC DSC core closes current loops fast enough for field-oriented control, while the high-speed PWM module generates the complementary switching patterns with dead-time control. The ADC, configurable at 10-bit 1.1 Msps with four sample-and-holds, can sample phase currents within a single PWM period, and independent ADC trigger sources keep sampling synchronized to the PWM carrier. Up to three on-chip op amps can condition shunt-current signals without external amplifiers, reducing BOM count. Place the controller between the gate-driver interface and the current-sense shunts; the deterministic DSP multiply-accumulate throughput is the key benefit over general-purpose MCUs in this role.
Recommended
Digital Power Conversion
For PFC, LLC, and buck converter control, the DSPIC33EP32MC504-H/ML offers the combination digital power designers need: a 70 MIPS core running compensator math, high-resolution PWM for duty-cycle and phase-shift generation, and a 12-bit 500 ksps ADC mode with one sample-and-hold for voltage/current feedback. Flexible and independent ADC trigger sources let the controller sample input and output rails at precise points in the switching cycle, minimizing switching-noise corruption of readings. The 3.3V logic supply integrates cleanly with gate-driver and feedback-IC rails. The trade-off versus dedicated digital-power ICs is software responsibility - you own the compensator code - in exchange for full topology flexibility and firmware upgradability.
Recommended
Automotive Body Electronics
With AEC-Q100 qualification and the H temperature rating of -40C to +125C, the DSPIC33EP32MC504-H/ML is suited to automotive body and auxiliary modules such as pump control, valve actuation, fan control, and lighting drivers. The high-speed PWM directly drives DC motor or solenoid loads through external gate drivers, while the 12-bit ADC supports position and current feedback. The multiple PGECx/PGEDx ICSP pairs allow in-system firmware updates on the assembled module - useful for end-of-line calibration. Designers should keep the exposed pad solidly grounded to the chassis-referenced plane for both thermal performance and EMI containment, which is mandatory in automotive EMC environments.
Recommended
Industrial Inverters and Drives
Industrial variable-frequency drives benefit from the DSPIC33EP32MC504-H/ML's deterministic DSP pipeline for V/f and sensorless-FOC algorithms, its high-speed PWM outputs driving IGBT or SiC gate drivers, and fast ADC sampling of DC-bus and phase currents. At 70 MIPS the core executes control-law arithmetic and protection logic - overcurrent comparison, bus-voltage supervision - within one switching period, even at 20-50 kHz carrier frequencies typical of industrial drives. The 3.3V I/O integrates with standard optocoupler and digital-isolator interfaces for galvanically isolated gate drive. Firmware-level protection reacts faster than software polling on slower MCUs, which is the decisive advantage in fault-intolerant industrial power stages.
Recommended
Digital Audio and Signal Processing Nodes
The DSP multiply-accumulate capability of the dsPIC33E core makes the DSPIC33EP32MC504-H/ML viable for embedded signal-processing nodes: audio filters, sensor-conditioning pipelines, and adaptive control blocks. With 32KB of instruction Flash holding 10.7K 24-bit words, compact FIR/IIR filter banks and detectors fit comfortably, while the 4KB RAM buffers sample streams. The three on-chip op amp/comparator blocks can pre-amplify microphone or transducer signals before the 12-bit ADC digitizes them, removing external analog front-end stages. The benefit is a single-chip signal chain at 3.3V; the constraint is RAM - long delay-line effects or multi-channel streaming may require the 64KB or 128KB pin-compatible siblings.
Recommended
Sensor Fusion and Smart Actuators
Smart actuators and IoT-adjacent industrial sensors use the DSPIC33EP32MC504-H/ML to fuse multiple analog inputs - position potentiometers, current shunts, temperature nodes - using the up to 16 analog input channels available on this family and the flexible ADC trigger architecture. The 10-bit 1.1 Msps four-sample-and-hold mode samples several channels near-simultaneously, preserving inter-channel timing for fusion algorithms, while the 70 MIPS core runs the estimation math. The exposed-pad VQFN handles the elevated temperatures inside sealed actuator housings up to +125C ambient per the H rating. On-chip comparators provide hardware-level threshold protection independent of firmware, an important safety property in actuated mechanisms.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33EP32MC504-H/ML — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33EP32MC504-I/ML | DSPIC33EP64MC504-H/ML | DSPIC33EP128MC504-H/ML | DSPIC33EP256MC504-H/ML |
|---|---|---|---|---|---|
| Package | 44-VQFN Exposed Pad (ML) | 44-VQFN (ML) - same | 44-VQFN (ML) - same | 44-VQFN (ML) - same | 44-VQFN (ML) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Program Memory | 32 KB | 32 KB | 64 KB | 128 KB | 256 KB |
| Core Performance | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS |
| Temperature Range | -40C to +125C (H) | -40C to +85C (I) | -40C to +125C (H) | -40C to +125C (H) | -40C to +125C (H) |
Key Differentiators
- Extended +125C automotive temperature grade (vs DSPIC33EP32MC504-I/ML)
- Lowest-cost entry to the MC504 44-QFN family (vs DSPIC33EP256MC504-H/ML)
- Integrated analog front end (vs PIC24EP32MC504-H/ML (re-branded sibling))
Design Notes
Solder the 44-VQFN exposed pad to a solid ground pour with a stitched via array (typically 4x4 or more vias under the pad). The exposed pad is the primary ground return for the core and analog blocks; a floating or void-ridden pad causes erratic analog readings and intermittent debugging. Follow Microchip family data sheet (DS70000657J) layout guidance for decoupling each VDD pin with 100 nF ceramics placed within 2 mm of the pin.
The device offers multiple ICSP programming pairs (PGECx/PGEDx). Programmers fail with 'target not detected' when ICSPCLK and ICSPDAT are routed from different pairs - PGEC2 must pair with PGED2, PGEC1 with PGED1, and so on. Also, series resistors of about 100 ohms on ICSP lines and isolation from load circuitry on those pins prevent programming conflicts when in-circuit. Verify the pair choice before routing the board, per the northernsoftware.com dsPIC33EP32MC504 support notes.
Estimated: at 70 MIPS with peripherals active, typical core current of this class of dsPIC33EP device is on the order of tens of milliamps at 3.3V (sub-200 mW dissipation), so the 44-QFN exposed pad rarely needs heatsinking - but in a sealed +125C ambient automotive enclosure the margin to junction limits shrinks, so confirm actual board-level theta_JA with your stack-up. Route high-current PWM traces away from the analog ADC input nets to protect the 12-bit 500 ksps readings from switching noise.
Compliance Information
Hotenda product listing identifies the part as Automotive, AEC-Q100 qualified. RoHS/lead-free status inferred from standard Microchip commercial packaging; REACH and halogen-free status not stated in provided data.
