DSPIC33FJ32MC302-E/MM - 16-bit DSC 40MIPS 32KB Flash | Microchip
MPN: DSPIC33FJ32MC302-E/MM ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $5.07 | $5.07 |
| 10 | $4.85 | $48.50 |
| 100 | $4.5 | $450.00 |
| 500 | $4.2 | $2,100.00 |
| 1,000 | $3.95 | $3,950.00 |
DSPIC33FJ32MC302-E/MM Overview
A digital signal controller combines the computational power of a digital signal processor with the peripheral set and deterministic control flow of a microcontroller. Within the power-management hierarchy, a DSC sits between a general-purpose MCU and a dedicated DSP: it executes single-cycle MAC and DSP instructions while integrating motor-control PWM, high-speed ADCs, and comparators on one chip. The dsPIC33F family employs a 16-bit modified Harvard architecture with a single-cycle instruction flow, meaning concurrent DSP engine and MCU instruction operation is not possible, which simplifies deterministic timing analysis.
Key features include up to four high-speed comparators with direct connection to the PWM module for fast current limiting, motor-control PWM outputs, a high-speed on-chip ADC, and 35 configurable I/O in the family. The -E grade extends the operating envelope to +125C for automotive under-hood and industrial environments.
Architecturally, the dsPIC33FJ32MC302 CPU module includes DSP engine support (single-cycle MAC, dual operand fetch) within the enhanced 16-bit instruction set. The device is pin compatible with the PIC24HJ family and shares a high degree of compatibility with the dsPIC30F family, enabling seamless migration between PIC24F, dsPIC30F, and dsPIC33F devices.
Typical applications include Brushless DC (BLDC) and permanent-magnet synchronous motor control, switched-mode power supplies and digital power converters, and sensorless motor drives where the comparators provide cycle-by-cycle current protection.
Design consideration: keep the 3.3 V rail within the 3.0-3.6 V window and use the QFN exposed pad for a solid ground connection - the 6x6 mm QFN requires a well-designed thermal/electrical land pattern.
This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for DSPIC33FJ32MC302-E/MM — 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 DSPIC33FJ32MC302-E/MM (same form factor and footprint) — differing in Core Architecture, Package, ADC, Comparators, Operating Temperature.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33FJ64MCX02-E/MM
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33FJ128MCX02-E/MM
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33FJ32MC302-I/MM
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
PIC24HJ32GP202-E/MM
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$3.6 / Unit
View Datasheet →DSPIC33FJ16GS402-E/MM
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33FJ32MC302-E/MM Maximum Ratings & Electrical Characteristics
| Core Architecture | 16-bit modified Harvard DSC |
| Max CPU Speed | 40 MIPS |
| Clock Speed | 40 MHz |
| Flash Program Memory | 32 KB (32K x 8) |
| SRAM | 2 KB |
| Supply Voltage Range | 3.0 V to 3.6 V |
| Operating Temperature | -40C to +125C (E grade) |
| Package | 28-QFN-S, 6x6 mm |
| Mounting Type | Surface Mount |
| ROM Type | Flash |
| ADC | On-chip high-speed ADC |
| Comparators | Up to 4 high-speed comparators |
| PWM | High-speed motor-control PWM |
| Family Compatibility | Pin compatible with PIC24HJ and dsPIC30F families |
| Lifecycle Status | Active |
| Lead Free | Yes |
| Classification | 16-bit Digital Signal Controller with Motor Control PWM and Advanced Analog |
DSPIC33FJ32MC302-E/MM 28-qfn-s, 6x6 mm Pin Configuration Guide
Pin configuration for DSPIC33FJ32MC302-E/MM (28-qfn-s, 6x6 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 DSPIC33FJ32MC302-E/MM.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33FJ32MC302-E/MM is suitable for 6 applications: BLDC / PMSM Motor Control, Switch-Mode Power Supplies (Digital Power), Automotive Auxiliary Systems, Industrial Automation and Robotics, Sensorless Fan and Pump Drives, Portable Test and Measurement Instruments.
BLDC / PMSM Motor Control
The DSPIC33FJ32MC302-E/MM fits brushless DC and permanent-magnet synchronous motor control because its 40 MIPS 16-bit core executes field-oriented-control loops with single-cycle MAC instructions, while the integrated motor-control PWM generates the complementary six-step or SVPWM drive signals with hardware dead-time control. Up to four high-speed comparators connect directly to the PWM module, enabling cycle-by-cycle overcurrent shutdown without CPU intervention - a decisive safety feature for traction and pump drives. The on-chip high-speed ADC samples phase currents and bus voltage within the PWM period, supporting sensorless estimators. The 32 KB Flash accommodates full FOC firmware plus communication stacks, and the -40C to +125C E-grade rating suits thermally constrained motor housings.
Recommended
Switch-Mode Power Supplies (Digital Power)
In digital power supplies, the DSPIC33FJ32MC302-E/MM acts as the feedback controller: the 40 MIPS core closes voltage- and current-loop compensators fast enough for mid-frequency converter topologies, and the high-speed ADC digitizes output voltage and current synchronously with the PWM cycle for predictable loop delay. The high-speed comparators provide instant overcurrent limiting, critical during load transients and short-circuit events in buck, boost, or LLC stages. The 3.0 V to 3.6 V supply simplifies bias generation from an auxiliary 3.3 V rail, and the 6x6 mm 28-QFN keeps the controller close to the gate-drive circuitry. For power-dedicated topologies, pair with the GS family members for specialized power PWM.
Recommended
Automotive Auxiliary Systems
The -40C to +125C operating range of the -E grade makes this DSC appropriate for under-hood auxiliary functions such as electronic water pumps, throttle actuators, HVAC blower control, and fuel-pump drivers, where the electronics must survive engine-bay temperatures. The 40 MIPS core runs sensorless BLDC algorithms with field-weakening, while the direct comparator-to-PWM protection path guards against rotor-locked overcurrent events without firmware latency. The 32 KB Flash holds control firmware, diagnostics, and LIN/CAN message handling. Designers should verify AEC-Q100 qualification needs per program, and consider the Q1-qualified family variants where formal automotive qualification documentation is contractually required rather than just temperature conformance.
Recommended
Industrial Automation and Robotics
Factory automation nodes benefit from the DSPIC33FJ32MC302-E/MM's combination of deterministic control and DSP throughput: quadrature-encoder inputs (QEA/QEB/INDEX mapped on the analog port pins) accept position feedback at high count rates, and the 40 MIPS core closes servo current loops while coordinating with a supervisory PLC over UART or SPI. The remappable Peripheral Pin Select scheme lets engineers route UART, SPI, and PWM signals to optimal PCB locations in crowded I/O layouts. The 32 KB Flash typically holds a complete servo axis firmware. The extended temperature rating supports enclosed cabinets with limited airflow, and family pin compatibility simplifies cost-reduced or memory-upgraded respins without PCB changes.
Recommended
Sensorless Fan and Pump Drives
For HVAC fans, circulation pumps, and compact blowers, the DSPIC33FJ32MC302-E/MM implements sensorless trapezoidal control using the built-in comparators as back-EMF zero-crossing detectors feeding the PWM module directly - eliminating hall sensors and their wiring cost. The 40 MIPS budget accommodates startup sequencing, state observers, and speed-loop control concurrently. The 3.3 V single-supply operation and 6x6 mm 28-QFN footprint suit dense inverter boards mounted inside motor housings, where -40C to +125C tolerance covers stalled-thermal conditions. The 2 KB SRAM is sufficient for sensorless state machines, and the high-speed ADC periodically samples bus voltage for rail-compensated duty commands, improving speed regulation accuracy across input fluctuations.
Recommended
Portable Test and Measurement Instruments
Handheld and bench instruments use the DSPIC33FJ32MC302-E/MM for signal processing tasks such as RMS computation, FFT-based analysis, and digital filtering, exploiting the DSP engine's single-cycle MAC within a 40 MIPS envelope. The high-speed ADC acquires sensor waveforms, and the 32 KB Flash stores calibration constants, user interface firmware, and communication protocols over UART/SPI to displays or USB bridges. The 3.3 V operation aligns with battery-fed LDO architectures, and low peripheral overhead keeps real-time sampling consistent. The extended temperature rating benefits instruments left in vehicles or industrial sites. Migration compatibility with dsPIC30F and PIC24 families lets instrument platforms reuse code and tooling across product tiers.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33FJ32MC302-E/MM — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33FJ64MCX02-E/MM | DSPIC33FJ128MCX02-E/MM | DSPIC33FJ32MC302-I/MM | PIC24HJ32GP202-E/MM | DSPIC33FJ16GS402-E/MM |
|---|---|---|---|---|---|---|
| Package | 28-QFN-S (6x6 mm) | 28-QFN-S (6x6 mm) - same | 28-QFN-S (6x6 mm) - same | 28-QFN-S (6x6 mm) - same | 28-QFN-S (6x6 mm) - same | 28-QFN (MM) - same footprint |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core Speed | 40 MIPS | 40 MIPS | 40 MIPS | 40 MIPS | 40 MIPS | 40 MIPS class |
| Flash Memory | 32 KB | 64 KB | 128 KB | 32 KB | 32 KB | 16 KB |
| Operating Temperature | -40C to +125C (E grade) | -40C to +125C (E grade) | -40C to +125C (E grade) | -40C to +85C (I grade) | -40C to +125C (E grade) | -40C to +125C (E grade) |
| Peripheral Emphasis | Motor-control PWM + comparators | Motor-control PWM + comparators (same set) | Motor-control PWM + comparators (same set) | Motor-control PWM + comparators (same set) | General-purpose MCU peripherals | Digital power conversion PWM |
| Drop-in Compatibility | Reference part | Pin-to-pin, firmware portable | Pin-to-pin, firmware portable | Pin-to-pin, identical firmware binary | Pin-compatible, peripheral mapping differs | Same footprint, peripheral set differs |
Key Differentiators
- Extended +125C temperature rating at no package penalty (vs DSPIC33FJ32MC302-I/MM)
- Memory headroom via same-footprint upgrade path (vs DSPIC33FJ64MCX02-E/MM)
- Hardware comparator-to-PWM protection path (vs PIC24HJ32GP202-E/MM)
Design Notes
The 28-QFN-S 6x6 mm package requires a properly designed land pattern with an exposed thermal/electrical pad soldered to a ground plane array of vias. Follow Microchip's QFN layout guidelines: via diameter around 0.3 mm on a 1.0-1.2 mm pitch under the pad, with solder paste segmented into an array to avoid voiding. Poor exposed-pad connection is the most common cause of intermittent grounding and ADC noise issues on this family. Place 0.1 uF ceramic decoupling capacitors within 2 mm of each VDD pin.
The device requires a 3.0 V to 3.6 V supply with 3.3 V nominal. Estimated: a motor-control application drawing 40 mA average core current plus gate-drive stage loading should budget at least 100-150 mA headroom on the 3.3 V LDO. During Flash programming the supply current increases transiently, so use a bulk 10 uF capacitor alongside the 0.1 uF decoupling caps. Ensure the rail stays in regulation through MCLR reset to avoid corrupted Flash writes during in-circuit programming.
Two frequent mistakes: (1) assuming fixed pin functions - most digital peripherals route through the remappable Peripheral Pin Select scheme, so verify the PPS register assignment table in datasheet 70291G before finalizing routing; (2) exceeding +125C ambient on the E-grade part in sealed motor housings - junction temperature includes self-heating, so derate ambient accordingly. Also note the architecture executes single-cycle instruction flow only: the DSP engine and MCU instruction streams cannot operate concurrently, which affects worst-case timing analysis.
Keep the high-speed comparator inputs and PWM outputs physically separated from the oscillator traces (OSC1/OSC2) to minimize coupled switching noise into the clock circuit. When using the crystal oscillator for full-speed 40 MIPS operation, follow the Microchip oscillator design guidelines for load capacitors and series resistance, and route the crystal as a short, guarded loop over a continuous ground plane. Ground the ADC reference closely and consider filtering VREF when sub-LSB accuracy is required in current-sense loops.
Compliance Information
Package described in source data as lead-free plastic QFN-S; Microchip standard production is RoHS compliant. AEC-Q100 qualification not stated in provided data for this ordering code - verify with Microchip before automotive programs. REACH/halogen-free/conflict-minerals status not stated in provided data.
