DSPIC33FJ32MC304-E/ML - 16-bit DSC, 40 MIPS, 32KB Flash | Microchip
MPN: DSPIC33FJ32MC304-E/ML ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.2 | $6.20 |
| 10 | $5.58 | $55.80 |
| 100 | $4.9 | $490.00 |
| 500 | $4.41 | $2,205.00 |
| 1,000 | $3.95 | $3,950.00 |
DSPIC33FJ32MC304-E/ML Overview
A Digital Signal Controller combines the compute architecture of a Digital Signal Processor (DSP) with the peripheral set and ease of use of a microcontroller. Within the power-management hierarchy of embedded control, the DSC sits above general-purpose MCUs for applications relying on high-speed, repetitive computation, such as field-oriented motor control and digital power conversion.
Key features include the dsPIC33F 16-bit architecture with DSP engine, DMA capability, dedicated Motor Control PWM, and advanced analog peripherals. The Mouser listing characterizes the part as a '16B DSC 44LD 32KB DMA 40MIPS', confirming the 44-lead package, 32 KB Flash, DMA controller, and 40 MIPS throughput.
Technical depth: the dsPIC33FJ32MC304 family employs a modified Harvard 16-bit architecture whose MAC instruction can fetch two data operands concurrently while multiplying two W registers and accumulating, optionally with saturation, in a single cycle, per the Microchip family data sheet (document 70291E/G). Supply voltage is 3 V to 3.6 V. The -E suffix denotes the extended temperature range of -40C to +125C, suiting harsh industrial environments.
Typical applications include three-phase brushless DC and PMSM motor control, digital power supplies (LLC, totem-pole PFC), sensorless FOC drives, and industrial automation nodes requiring deterministic DSP-class math.
Design consideration: the 44-QFN exposes a thermal pad that must be soldered to a grounded copper pour for reliable heat dissipation at 40 MIPS, and the 3.0-3.6 V supply demands a clean LDO or buck-derived rail.
This page adds value beyond the datasheet by synthesizing distributor pricing tiers, drop-in same-family alternatives, and practical design notes in one place.
Drop-in alternatives for DSPIC33FJ32MC304-E/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 DSPIC33FJ32MC304-E/ML (same form factor and footprint) — differing in I/O Ports, Operating Temperature, Package, Core Architecture, Flash Program Memory.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33FJ32MC304-I/ML
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33FJ32MC204-I/ML
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$4.37 / Unit
View Datasheet →DSPIC33FJ32GP304-I/ML
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$3.49 / Unit
View Datasheet →DSPIC33FJ16MC304-I/ML
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33FJ64MC304-E/ML
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33FJ128MC304-E/ML
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33FJ32MC304-E/ML Maximum Ratings & Electrical Characteristics
| Core Architecture | 16-bit dsPIC33F DSC |
| Max Clock Speed | 40 MHz |
| Performance | 40 MIPS |
| Program Memory Type | Flash |
| Flash Program Memory | 32 KB |
| Supply Voltage | 3 V to 3.6 V |
| I/O Ports | 21 |
| DMA | Yes |
| Package Type | QFN-44, 8 x 8 mm, lead-free plastic |
| Operating Temperature | -40C to +125C (E grade) |
| Mounting Type | Surface Mount |
| Family Compatibility | Pin compatible with PIC24HJ family |
| Peripherals | Motor Control PWM, advanced analog |
DSPIC33FJ32MC304-E/ML qfn-44, 8 x 8 mm, lead-free plastic Pin Configuration Guide
Pin configuration for DSPIC33FJ32MC304-E/ML (qfn-44, 8 x 8 mm, lead-free plastic 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 DSPIC33FJ32MC304-E/ML.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33FJ32MC304-E/ML is suitable for 6 applications: Brushless DC / PMSM Motor Control, Digital Power Conversion (LLC, PFC), Sensorless Field-Oriented Control Drives, Industrial Automation and PLC Nodes, Battery-Powered Portable Equipment, Automotive-Adjacent and Harsh Environment Control.
Brushless DC / PMSM Motor Control
The DSPIC33FJ32MC304-E/ML is purpose-built for three-phase BLDC and PMSM control: its dedicated Motor Control PWM generates complementary, dead-time-controlled drive signals, while the 40 MIPS DSP core executes field-oriented control (FOC) loops with single-cycle MAC arithmetic. The integrated advanced analog front end samples phase currents through the internal ADC without external signal-conditioning ICs, and DMA moves current samples to RAM deterministically, keeping control-loop jitter at zero even at 20-100 kHz PWM frequencies. The -40C to +125C extended temperature range supports sealed industrial drives and traction-adjacent environments. Design trade-off: at 40 MIPS the core handles FOC easily, but Flash is limited to 32 KB, so avoid bloated RTOS stacks and keep the control ISR lean.
Recommended
Digital Power Conversion (LLC, PFC)
In digitally controlled power supplies such as LLC resonant converters and totem-pole PFC stages, the DSPIC33FJ32MC304-E/ML pairs its high-resolution PWM engine with fast ADC sampling to close current and voltage loops in software. The 40 MIPS core with DSP MAC instructions computes the compensation law each switching cycle, and DMA streams ADC results without CPU intervention, guaranteeing deterministic loop timing. Its 3 V to 3.6 V supply integrates cleanly with controller-side bias rails derived from an auxiliary winding. The -E extended temperature grade allows operation inside sealed PSU enclosures reaching +125C ambient at the PCB. Trade-off: 32 KB Flash is ample for a state-machine based digital power firmware, but complex multi-mode PMBus stacks may require the 64 KB or 128 KB Flash pin-compatible siblings.
Recommended
Sensorless Field-Oriented Control Drives
Sensorless FOC requires heavy real-time math: Clarke/Park transforms, PI current loops, and an observer such as a sliding-mode or MRAS estimator all run at PWM frequency. The DSPIC33FJ32MC304-E/ML handles this with its 16-bit DSP engine executing single-cycle multiply-accumulate with optional saturation, per the dsPIC33F family architecture description in Microchip data sheet 70291E/G. The 21 I/O pins interface gate drivers, protection comparators, and UART/CAN communication to a host. Operating from a tightly regulated 3.3 V rail with proper decoupling, the -E grade sustains the hot conditions typical of motor-drive PCBs near power stages. Budget carefully: 32 KB Flash accommodates FOC plus an observer, but adding communication stacks may push designs toward the 128 KB drop-in upgrade.
Recommended
Industrial Automation and PLC Nodes
In factory automation nodes, the DSPIC33FJ32MC304-E/ML serves as an intelligent actuator or sensor-interface controller combining DSP-class filtering (IIR/FIR on vibration or current signatures) with general-purpose sequencing on its 21 I/O pins. The extended -40C to +125C rating tolerates unconditioned cabinets, and the active lifecycle with low risk per trustedparts makes it safe for long-production industrial programs. The dsPIC33F family's stated pin compatibility with PIC24HJ devices provides a seamless migration path if future firmware grows beyond 32 KB Flash or requires different peripherals without a PCB respin. DMA offloads UART and SPI traffic so the CPU concentrates on control and diagnostics. Consider it for servo-interface cards, pump controllers, and smart contactor modules where deterministic DSP math is needed alongside rugged I/O.
Recommended
Battery-Powered Portable Equipment
Portable and battery-operated instruments benefit from the DSPIC33FJ32MC304-E/ML when signal processing must run at the edge: FFT-based analysis, harmonic measurement, or sensor fusion. The 3 V to 3.6 V supply accepts a single lithium cell through a small LDO, and the 8x8 mm QFN-44 conserves board area in handheld form factors. DSP MAC throughput allows short, bursty computations with the core sleeping between acquisitions, and the compact 32 KB Flash keeps firmware small and verification simple. The -E temperature grade extends usability into outdoor test equipment exposed to temperature extremes. Power trade-off: this Flash-based dsPIC33F family is not the lowest-power Microchip line; for strict energy budgets, profile sleep currents and compare against newer dsPIC33CK devices before committing the layout.
Recommended
Automotive-Adjacent and Harsh Environment Control
While the -E grade does not equal AEC-Q100 qualification, its -40C to +125C operating range matches the temperature profile of many under-hood-adjacent and heavy-equipment zones such as pump controllers, agritech actuators, and auxiliary systems. The DSP core executes resonant-filter and control algorithms that 8-bit MCUs cannot sustain, Motor Control PWM drives brushed or BLDC actuators directly through gate drivers, and 21 I/O pins handle limit switches and feedback sensors. The lead-free plastic QFN-44 package supports standard lead-free reflow assembly. Verify qualification requirements explicitly: if the end system mandates AEC-Q100-qualified silicon, this commercial/industrial-grade DSC is not certified for it, and an automotive-qualified family member must be selected instead during design review.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33FJ32MC304-E/ML — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33FJ32MC304-I/ML | DSPIC33FJ32MC204-I/ML | DSPIC33FJ32GP304-I/ML | DSPIC33FJ16MC304-I/ML | DSPIC33FJ128MC304-E/ML |
|---|---|---|---|---|---|---|
| Package | QFN-44 (8x8 mm) | QFN-44 (8x8 mm) - same | QFN-44 (8x8 mm) - same | QFN-44 (8x8 mm) - same | QFN-44 (8x8 mm) - same | QFN-44 (8x8 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Program Memory | 32 KB | 32 KB | 32 KB | 32 KB | 16 KB | 128 KB |
| Performance | 40 MHz / 40 MIPS | 40 MHz / 40 MIPS | 40 MHz / 40 MIPS | 40 MHz / 40 MIPS | 40 MHz / 40 MIPS | 40 MHz / 40 MIPS |
| Operating Temperature | -40C to +125C (E) | -40C to +85C (I) | -40C to +85C (I) | -40C to +85C (I) | -40C to +85C (I) | -40C to +125C (E) |
| Motor Control PWM Peripherals | Yes (MC family) | Yes (MC family) | Yes (MC family) | No (GP peripherals) | Yes (MC family) | Yes (MC family) |
| DMA | Yes | Yes | Yes | Yes | Yes | Yes |
| I/O Count | 21 | 21 | 21 | 21 | 21 | 21 |
Key Differentiators
- Extended temperature range for hot environments (vs DSPIC33FJ32MC304-I/ML)
- Dedicated Motor Control PWM peripheral set (vs DSPIC33FJ32GP304-I/ML)
- Flash-upgradeable footprint (vs DSPIC33FJ16MC304-I/ML)
Design Notes
The QFN-44 (8x8 mm) package has a central exposed pad that must be soldered to a grounded copper pour with an array of thermal vias. This pad is the primary ground return and heat-removal path at 40 MIPS operation. Follow Microchip's QFN landing-pattern recommendations; insufficient paste coverage under the pad causes both intermittent ground faults and elevated junction temperature. Use X-ray or inspection criteria to verify pad wetting in production.
Supply the part from a 3.3 V rail within the 3 V to 3.6 V window. Decouple every VDD/VSS pair with 100 nF ceramics placed within 2 mm of the pins, plus 4.7-10 uF bulk near the device. In motor-control layouts, keep the controller ground reference star-connected or use a solid ground plane isolated from power-stage switching loops; ADC accuracy of the advanced analog block depends directly on clean VDD and VREF rails.
Do not confuse temperature suffixes when ordering: -E (125C) and -I (85C) parts share identical pinout and functionality, but substituting -I for -E in hot enclosures causes field failures. Also reserve PGD/PGC programming pins on connectors for ICSP debugging, and remember 32 KB Flash includes the boot block; leaving room for a bootloader plus FOC firmware is tight - plan the memory map early or choose the 64/128 KB pin-compatible variants.
Compliance Information
Package specification from digchip describes 'LEAD FREE, PLASTIC, QFN-44'. Full RoHS/REACH declarations should be confirmed on Microchip's product page. No AEC-Q100 qualification documented for this part number.
