DSPIC33EP32MC502-E/SO - 60MHz 16-bit DSC, 32KB Flash | Microchip
MPN: DSPIC33EP32MC502-E/SO ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.92 | $4.92 |
| 10 | $4.45 | $44.50 |
| 100 | $3.98 | $398.00 |
| 500 | $3.62 | $1,810.00 |
| 1,000 | $3.28 | $3,280.00 |
DSPIC33EP32MC502-E/SO Overview
A digital signal controller combines the peripheral set and ease of use of a microcontroller with the computational throughput of a DSP core. In the power-management hierarchy of embedded systems, DSCs sit between general-purpose MCUs and dedicated DSPs, making them the standard choice for real-time closed-loop control where both fast math and rich analog integration are required.
Key features of the DSPIC33EP32MC502 include a dsPIC33E 16-bit core with integrated DSP engine (single-cycle MAC, 40-bit accumulators), high-speed PWM peripherals purpose-built for motor control, 4 DMA channels for offloading data movement from the CPU, and 5 timers. The -E temperature grade (-40C to +125C) and gull-wing SOIC package suit demanding industrial environments.
Per Microchip product documentation, the dsPIC33E family enables high-performance, precision motor-control systems that are more energy efficient, quieter in operation, and have extended service life. The device natively controls brushless DC (BLDC) and permanent-magnet synchronous motors (PMSM), with peripheral support for Field-Oriented Control (FOC) algorithms that demand deterministic PWM generation and fast ADC sampling.
Typical applications include BLDC and PMSM motor drives for industrial automation, digital power supplies and PFC stages, embedded control in appliances, and automotive-adjacent actuation systems where the extended temperature range is required.
When designing with this DSC, budget Flash carefully: 32 KB is sufficient for FOC firmware with Microchip's Motor Control library, but complex multi-axis or fieldbus-enabled designs may need the larger memory siblings in the same family and package footprint.
This page synthesizes distributor availability, drop-in same-footprint alternatives, and practical motor-control design guidance not consolidated in the manufacturer datasheet. Pricing shown is an estimate as of 2026-09-25.
Drop-in alternatives for DSPIC33EP32MC502-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 DSPIC33EP32MC502-E/SO (same form factor and footprint) — differing in Package, Operating Temperature, Series, SRAM, Core Architecture.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33EP32MC202-I/SO
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$3.46 / Unit
View Datasheet →DSPIC33EP32MC203T-I/TL
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$1.65 / Unit
View Datasheet →DSPIC33EP32GP502T-E/MM
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$2.98 / Unit
View Datasheet →DSPIC33EP32MC502-E/SO Maximum Ratings & Electrical Characteristics
| Core | dsPIC33E 16-bit DSC |
| CPU Speed | 60 MIPS (60 MHz) |
| Program Memory (Flash) | 32 KB |
| SRAM | 4 KB |
| DMA Channels | 4 |
| Timers | 5 |
| Package | 28-pin SOIC (SO), gull-wing |
| Operating Temperature | -40C to +125C (Extended, E grade) |
| Mounting Type | Surface Mount |
| Terminal Form | Gull Wing |
| Number of Terminals | 28 |
| Technology | CMOS |
DSPIC33EP32MC502-E/SO 28-pin soic (so), gull-wing Pin Configuration Guide
Pin configuration for DSPIC33EP32MC502-E/SO (28-pin soic (so), gull-wing 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 DSPIC33EP32MC502-E/SO.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33EP32MC502-E/SO is suitable for 6 applications: BLDC Motor Control, PMSM Field-Oriented Control Drives, Digital Power Supplies and PFC, Industrial Automation and Robotics, Appliance Motor Drive Control, Automotive-Adjacent Actuation and Pumps.
BLDC Motor Control
The DSPIC33EP32MC502-E/SO is purpose-built for brushless DC motor control: its high-speed PWM peripherals generate complementary, dead-time-controlled outputs for three-phase inverters, while the 16-bit DSP core with single-cycle MAC executes commutation or Field-Oriented Control loops deterministically at up to 60 MIPS. With 32 KB Flash and 4 KB SRAM, a complete sensorless FOC stack plus protection logic fits within the memory budget. The 4 DMA channels offload ADC results and UART telemetry so the CPU stays dedicated to the control loop. In a typical design the DSC reads phase currents and the DC bus, computes the next PWM duty cycle each PWM period, and applies fault shutdown via hardware. The result, per Microchip, is a drive that is more energy efficient, quieter, and longer-lived than analogue or 8-bit alternatives.
Recommended
PMSM Field-Oriented Control Drives
Permanent-magnet synchronous motors demand sinusoidal current shaping that only fast, deterministic control can deliver. The DSPIC33EP32MC502-E/SO meets this with its dsPIC33E DSP engine: Park/Clarke transforms and PI current loops run in microsecond order at the 60 MHz core clock, synchronized to the high-speed PWM period. The on-chip ADC, coordinated through DMA, samples phase currents at the PWM midpoint to avoid switching noise, a technique Microchip documents in its motor-control application notes. The extended -40C to +125C operating range of the -E grade suits drives mounted near heat-generating power stages, such as servo drives and traction auxiliaries. Because the 32 KB Flash holds the full FOC stack including startup and fault handling, no external memory is needed, and the 28-pin SOIC keeps controller footprint minimal on dense power boards.
Recommended
Digital Power Supplies and PFC
Switching power supplies and power-factor-correction stages benefit from the DSPIC33EP32MC502-E/SO's combination of fast PWM, DMA-fed ADC sampling, and DSP-based compensator implementation. Voltage- and current-mode loops with 2-pole/2-zero compensators run inside the 32 KB Flash alongside soft-start, burst mode, and fault management. The 60 MIPS core closes current loops at switching frequencies of hundreds of kHz with margin, and the deterministic interrupt latency of the dsPIC33E core keeps control timing consistent, which directly translates to output ripple and transient performance. Digital implementation also enables adaptive features that analogue control cannot offer, such as efficiency-optimized mode switching across load ranges. The -E/SO's extended temperature rating supports power supplies in enclosed industrial equipment where ambient near the controller can exceed 85C.
Recommended
Industrial Automation and Robotics
In factory automation nodes, the DSPIC33EP32MC502-E/SO serves as the real-time motion controller between a supervisory PLC or industrial Ethernet gateway and the power stage. Its 5 timers support quadrature encoder decoding for position feedback, while communication peripherals interface with higher-level controllers. The 4 DMA channels keep encoder counts and ADC samples moving without CPU intervention, preserving loop determinism. The DSP core handles feed-forward and vibration-damping computations that plain MCUs offload or omit. The 28-pin SOIC gull-wing package solders reliably with standard reflow processes and its -40C to +125C rating survives control-cabinet temperature excursions. Designers typically pair it with gate drivers and isolated current sensors to build compact servo axes, conveyors indexing, and robotic joint controllers where quiet, efficient, precise motion is a competitive requirement.
Recommended
Appliance Motor Drive Control
Modern appliances - washing machines, refrigerators, dishwashers, and HVAC blowers - increasingly use variable-speed BLDC or PMSM motors to meet energy regulations and noise limits. The DSPIC33EP32MC502-E/SO provides the control backbone: high-speed PWM drives the inverter, the ADC plus DMA handles current and bus-voltage feedback, and the DSP core executes sensorless observers (BEMF or sliding-mode) within 32 KB Flash. Microchip notes that dsPIC33E-based designs produce quieter, more energy-efficient, longer-life appliances. The extended -40C to +125C grade tolerates the hot, humid environments near compressor and washer motor assemblies, and the low pin-count 28-pin SOIC keeps controller cost and board area low, which matters in high-volume consumer manufacturing where every cent of BOM is scrutinized.
Recommended
Automotive-Adjacent Actuation and Pumps
Electric water pumps, fuel pumps, turbo actuators, and cooling-fan modules in vehicles need motor controllers that survive under-hood temperatures. The -E grade of the DSPIC33EP32MC502-E/SO is rated -40C to +125C, matching these environments, and the SOIC gull-wing package provides reliable solder joints under thermal cycling. The DSC's DSP core runs sensorless FOC or block-commutation with speed estimation, its PWM supports safety-relevant dead-time insertion, and hardware fault inputs allow immediate PWM tripping on overcurrent - a requirement for functional-safety-adjacent designs. With 32 KB Flash, diagnostic routines, limp-home modes, and basic CAN-based reporting via a companion CAN controller all coexist in memory. Lisleapex and Vyrian listings classify this MPN under automotive-grade applications, reflecting its extended-temperature positioning in vehicle subsystem designs.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33EP32MC502-E/SO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33EP32MC202-I/SO | DSPIC33EP32MC203 | DSPIC33EP32GP502 |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-pin SOIC (SO) | 28-pin SOIC (SO) - same | 28-pin SOIC (SO) - same | 28-pin SOIC (SO) - same |
| CPU Speed | 60 MIPS (60 MHz) | 60 MIPS (60 MHz) | 60 MIPS (60 MHz) | 60 MIPS (60 MHz) |
| Peripheral Family | Motor Control (MC) | Motor Control (MC) | Motor Control (MC) | General Purpose (GP) |
| DMA Channels | 4 | 4 | 4 | 4 |
| Footprint Compatible | Yes (28-pin SOIC) | Yes - drop-in | Yes - drop-in | Yes - drop-in |
Key Differentiators
- Extended temperature range for hot environments (vs DSPIC33EP32MC202-I/SO)
- Full 32 KB Flash in the drop-in footprint (vs DSPIC33EP32MC203)
- Motor-control peripheral set, not general-purpose (vs DSPIC33EP32GP502)
Design Notes
The 28-pin SOIC wide-body requires a standard SOIC-28 land pattern; the gull-wing leads tolerate both wave and reflow soldering. Place 0.1 uF ceramic decoupling capacitors within 5 mm of each VDD/VSS pair, plus one 4.7-10 uF bulk capacitor near the supply entry. Keep the VDD/VSS loop area small and connect VSS to a solid ground plane. If your board may later switch to the -E/MM QFN variant, note that the QFN's exposed pad is NOT footprint-compatible with SOIC - plan package choice before layout.
Estimated: at 60 MHz the dsPIC33E core typically draws tens of mA, so junction dissipation is roughly 60-100 mW. With a theta-JA on the order of 70-100 C/W for SOIC-28, junction rise above ambient is only a few degrees C, so the -E grade's +125C limit is comfortably usable near its ceiling as long as self-heating from I/O currents driving gate drivers is accounted for. The binding constraint in motor drives is usually ambient temperature at the controller location, not silicon dissipation.
Do not confuse package suffixes: -E/SO (SOIC-28), -E/MM (QFN 6x6), -E/SS (SSOP-28), and -I/SP (SDIP) are electrically equivalent but physically incompatible - the SS and SP variants cannot replace the SO on the same land pattern. Also verify Flash headroom before committing: at 32 KB, a full FOC stack plus communication stacks (e.g., CAN reporting) can approach the limit; budget code size early or select a larger-memory family member. MCLR programming circuits must follow Microchip ICSP guidelines for in-system debug with ICD/PICkit tools.
Compliance Information
Compliance data not stated in the provided verified web data. Microchip standard products are generally RoHS-compliant, but this must be confirmed on the Microchip product page before design-in.
