DSPIC33EP32MC502T-E/SO - 16-bit 60 MIPS Motor Control DSC | Microchip
MPN: DSPIC33EP32MC502T-E/SO ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $5.2 | $5.20 |
| 10 | $4.68 | $46.80 |
| 100 | $4.16 | $416.00 |
| 500 | $3.74 | $1,870.00 |
| 1,000 | $3.36 | $3,360.00 |
DSPIC33EP32MC502T-E/SO Overview
A digital signal controller combines the computational architecture of a microcontroller with the DSP engine of a digital signal processor on a single die. In the power-management hierarchy, the DSC sits above a conventional MCU by adding hardware multiply-accumulate, DSP loops and high-resolution motor-control PWM peripherals, allowing a single chip to close current, speed and position control loops for motors without external signal-processing silicon.
Key features of this part include a 16-bit dsPIC33EP core running at 60 MIPS, 32KB of self-programmable Flash, 4KB of RAM, a CAN 2.0B module for vehicle and industrial networks, motor-control PWM (MCPWM) outputs, a quadrature encoder interface (QEI) for position feedback, two integrated operational amplifiers and three analog comparators that reduce external component count in current-sensing paths.
Architecturally, the device uses a CMOS process with a modified Harvard 16-bit pipeline and DSP instruction extensions, letting developers execute MAC-class operations while servicing motor-control interrupts deterministically. The E temperature suffix denotes operation from -40C to +125C, supporting under-hood and high-temperature industrial cabinets.
Typical applications include brushless DC (BLDC) and permanent-magnet synchronous motor (PMSM) control, power-factor-correction stages, digital power supplies, and CAN-connected automotive actuator modules where quiet, energy-efficient, long-life motor operation is required.
When designing with this DSC, budget decoupling capacitance at each VDD pin and place the op-amp current-sense traces away from the PWM switching nodes to protect the analog front end.
This page synthesizes distributor listings, verified datasheet parameters, drop-in alternatives and practical design guidance not found on any single manufacturer or distributor page.
Drop-in alternatives for DSPIC33EP32MC502T-E/SO — 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 DSPIC33EP32MC502T-E/SO (same form factor and footprint) — differing in Package, Core Architecture, RAM, Series, Communication Interfaces.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33EP32GP502T-E/SO
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View Datasheet →DSPIC33EP32MC202-I/SO
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View Datasheet →DSPIC33EP64MC502-I/SO
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP128MC502-I/SO
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
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View Datasheet →DSPIC33EP32MC502-I/SO
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
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View Datasheet →DSPIC33EP32MC502T-E/SO Maximum Ratings & Electrical Characteristics
| Core Architecture | 16-bit dsPIC33EP DSC |
| Maximum CPU Speed | 60 MIPS |
| Maximum Clock Frequency | 60 MHz |
| Program Memory (Flash) | 32KB (10.7K x 24) |
| RAM | 4KB (2K x 16) |
| Package | 28-SOIC (PDSO, 28-pin) |
| Operating Temperature Range | -40C to +125C (E suffix) |
| Automotive Qualification | AEC-Q100 qualified |
| Communication Interfaces | CAN, UART, SPI, I2C |
| Motor Control Peripherals | MCPWM, QEI |
| On-chip Op-Amps | 2 |
| Analog Comparators | 3 |
| Process Technology | CMOS |
| Mounting Type | Surface Mount |
DSPIC33EP32MC502T-E/SO 28-soic (pdso, 28-pin) Pin Configuration Guide
Pin configuration for DSPIC33EP32MC502T-E/SO (28-soic (pdso, 28-pin) 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 DSPIC33EP32MC502T-E/SO.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33EP32MC502T-E/SO is suitable for 6 applications: BLDC Motor Control, PMSM / FOC Drives, Automotive Actuator Modules, Digital Power Supplies, Industrial Automation Nodes, Appliance Motor Subsystems.
BLDC Motor Control
The DSPIC33EP32MC502T-E/SO fits brushless DC motor drives because its 60 MIPS dsPIC33EP core executes commutation and current-loop code with deterministic timing, while six MCPWM channels generate complementary or independent PWM waveforms with dead-time control. The QEI peripheral accepts encoder position feedback, and the two on-chip op-amps plus three comparators amplify and protect the shunt-resistor current-sense signals without external amplifier ICs. In a typical trapezoidal or field-oriented control scheme, the DSC samples phase currents, runs the control loop and updates PWM duty cycles within one PWM period, delivering quieter, more energy-efficient motor operation as Microchip documents for the dsPIC33E family in its 28-SOIC AEC-Q100 package.
Recommended
PMSM / FOC Drives
For permanent-magnet synchronous motor drives using field-oriented control, the DSPIC33EP32MC502T-E/SO provides the DSP multiply-accumulate throughput at 60 MIPS needed for Clarke/Park transforms and PI current regulators at switching frequencies of 20 kHz and above. The MCPWM module supplies center-aligned, dead-time-compensated outputs to the three-phase inverter gate drivers, while QEI decodes the rotor encoder for accurate F0 estimation. Integrated op-amps condition low-side shunt currents, and the 32KB Flash holds the FOC firmware plus commissioning tables. Because the device is AEC-Q100 qualified with a -40C to +125C range in the 28-SOIC footprint, it also suits traction-adjacent and industrial servo applications demanding qualified silicon.
Recommended
Automotive Actuator Modules
The AEC-Q100 qualification and -40C to +125C E temperature rating make the DSPIC33EP32MC502T-E/SO appropriate for automotive actuator modules such as electronic throttle, HVAC damper, pump and fan controllers. Its CAN module connects the module to the vehicle network for command and diagnostic traffic, while MCPWM drives the actuator motor and QEI reads position feedback from optical or magnetic encoders. The 32KB Flash accommodates firmware plus calibration data with room for OTA-style field reprogramming via self-programming. The compact 28-SOIC surface-mount package fits dense ECU boards, and the tape-and-reel T suffix packaging supports automated pick-and-place assembly on automotive production lines requiring traceable, qualified components.
Recommended
Digital Power Supplies
In switch-mode power supplies and power-factor-correction stages, the DSPIC33EP32MC502T-E/SO closes voltage and current loops digitally using its 60 MIPS core and fast analog resources. The three comparators support cycle-by-cycle overcurrent protection with hardware trip of the MCPWM outputs, a critical safety feature in power conversion, while the op-amps buffer current-sense signals ahead of the ADC. DSP instructions handle notch filtering and gain scheduling for wide-input-range converters. The 32KB Flash stores compensation tables for different load conditions, and CAN allows the supply to report telemetry on industrial buses. The -40C to +125C operation covers power-supply internal ambient temperatures that exceed standard commercial ratings.
Recommended
Industrial Automation Nodes
Industrial automation nodes benefit from the DSPIC33EP32MC502T-E/SO's mix of CAN, UART, SPI and I2C connectivity combined with motor-control capability in one 28-SOIC chip. A single DSC can drive a conveyor actuator via MCPWM, read an encoder through QEI, and exchange status with a PLC over CAN, eliminating a separate communication controller. The two op-amps condition analog sensor inputs such as pressure or load cells, and the 60 MIPS core runs filtering and PID routines concurrently. Its CMOS construction keeps quiescent power low, and the -40C to +125C range withstands unconditioned factory cabinets, making the part a compact, single-source solution for distributed motion and I/O points.
Recommended
Appliance Motor Subsystems
Consumer appliances such as washing machines, dishwashers and refrigeration compressors use the DSPIC33EP32MC502T-E/SO to run quieter, more energy-efficient variable-speed motors, matching Microchip's stated value proposition for the dsPIC33E family. The MCPWM outputs drive the inverter stage of a BLDC compressor or drum motor, QEI provides rotor position for smooth low-speed starts, and the integrated op-amps and comparators handle current sensing and fault protection, reducing total bill-of-material cost. The 32KB Flash retains wash-cycle or compressor algorithms, and the robust -40C to +125C operation survives the hot compressor bay. The compact 28-SOIC package suits the constrained control-board layouts typical of appliance designs.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33EP32MC502T-E/SO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33EP32GP502T-E/SO | DSPIC33EP32MC202-I/SO | DSPIC33EP64MC502-I/SO | DSPIC33EP128MC502-I/SO |
|---|---|---|---|---|---|
| Package | 28-SOIC | 28-SOIC - same | 28-SOIC - same | 28-SOIC - same | 28-SOIC - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| CPU Speed | 60 MIPS | 60 MIPS | 60 MIPS | 60 MIPS | 60 MIPS |
| Flash Memory | 32KB | 32KB | 32KB | 64KB | 128KB |
| Temperature Range | -40C to +125C (E) | -40C to +125C (E) | -40C to +85C (I) | -40C to +85C (I) | -40C to +85C (I) |
Key Differentiators
- Integrated motor-control analog (2 op-amps, 3 comparators) (vs DSPIC33EP32GP502T-E/SO)
- Extended -40C to +125C AEC-Q100 temperature rating (vs DSPIC33EP32MC202-I/SO)
- Pin-compatible Flash upgrade path (vs DSPIC33EP128MC502-I/SO)
Design Notes
Place 100nF ceramic decoupling capacitors within 2mm of each VDD pin on the 28-SOIC, plus a bulk 4.7uF-10uF capacitor near the supply entry. Keep the analog supply path (op-amp and comparator pins, VDDCORE) separated from PWM switching return currents by routing them over a continuous ground plane. On a two-layer board, dedicate the bottom layer under the DSC to ground and avoid splitting it under the current-sense traces. Estimated: with PWM edge rates typical of motor drives (tens of ns), stub lengths above 20mm on sense lines can pick up sufficient coupling to disturb the comparators.
Verify peripheral usage before substituting the DSPIC33EP32MC202-I/SO for this part: the MC202 lacks the MCPWM, QEI, op-amps and comparators present on the MC502, and code referencing those peripherals will not link or will misbehave. Also note the temperature difference - the MC202-I tops out at +85C versus +125C for this E-suffix part, so automotive or compressor-bay sockets must keep the MC502. Finally, the T suffix is tape-and-reel; ordering the non-T tube variant changes handling for pick-and-place lines.
The 28-SOIC package has limited copper area, so estimate junction temperature early in motor-drive designs. Estimated: a 60 MIPS dsPIC33EP drawing roughly 50-70 mA core current from a 3.3V rail dissipates about 165-230 mV-class power near 230 mW; even with a typical SOIC theta_JA around 90-100 C/W, junction rise is roughly 20-23 C above ambient, leaving headroom within the +125C rating only if ambient stays below about 100 C. Use 2 oz copper and expanded ground pour under the package in hot enclosures, and confirm theta_JA from the manufacturer datasheet rather than these estimates.
For the QEI encoder inputs and op-amp current-sense pins, use short, shielded or ground-guarded traces and add small RC filters (e.g. 1k / 1nF) at comparator inputs to reject inverter switching noise. Route CAN TX/RX to the transceiver differentially away from the MCPWM outputs, and follow Microchip's dsPIC33E motor-control application notes for gate-driver interface grounding. Star-grounding the shunt resistor Kelvin connection directly at the op-amp inverting input yields the cleanest current feedback.
Compliance Information
AEC-Q100 qualification confirmed by Microchip USA and distributor listings. RoHS and lead-free status inferred from Microchip standard Pb-free 28-SOIC offering; REACH and halogen-free status not stated in the provided data.
