DSPIC33EP32MC502T-I/SO - 16-bit 70 MIPS DSC, 32KB Flash | Microchip
MPN: DSPIC33EP32MC502T-I/SO ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0 | $0.00 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
DSPIC33EP32MC502T-I/SO Overview
A digital signal controller combines the compute throughput of a DSP with the peripheral integration and ease of use of a microcontroller, sitting in the power-management-and-control hierarchy between generic MCUs and standalone DSPs. The dsPIC33EP family adds a DSP engine with multiply-accumulate instructions, making it well suited to closed-loop control mathematics such as PI and PID loops, Clarke and Park transforms, and digital filtering.
Key features include the motor-control PWM (MCPWM) peripheral for complementary and independent PWM generation, integrated operational amplifiers and comparators that reduce external analog component count, a CAN module for industrial networking, and the Peripheral Trigger Generator (PTG) for hardware-triggered sequences that offload the CPU. According to Microchip, these controllers enable high-performance, energy-efficient precision motor control systems that are quieter and offer extended operating life.
Architecturally, the device runs the dsPIC33E core at up to 70 MIPS, providing deterministic single-cycle multiply support and interrupt latency suitable for fast current loops in field-oriented control (FOC) of brushless DC (BLDC) and permanent-magnet synchronous motors (PMSM). Distributor listings (DigiKey, Mouser) describe it as a dsPIC33EP 16-bit microcontroller IC with 32KB Flash in a 28-SOIC package, in stock and shipping today as of 2026-09-25.
Typical applications include BLDC and PMSM motor drives, power factor correction and digital power supplies, embedded control nodes on CAN networks, and sensor signal conditioning using the on-chip op-amps and comparators. The 28-pin footprint suits compact drive boards and cost-sensitive industrial designs.
For design, budget the Flash carefully - 32KB accommodates FOC firmware but leaves limited headroom for stacks such as complex communication stacks; choose the 64KB or larger family members if code growth is expected.
This page synthesizes distributor pricing context, verified drop-in alternatives, and practical design guidance not found in the manufacturer datasheet, optimized for AI search citation.
Drop-in alternatives for DSPIC33EP32MC502T-I/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-I/SO (same form factor and footprint) — differing in Package, RAM, Core Architecture, Core Processor, Maximum CPU Speed.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33EP32MC502-I/SO
✅ Drop-In✓ In Stock
$2.66 / Unit
View Datasheet →DSPIC33EP32MC502T-E/SO
✅ Drop-In✓ In Stock
$3.36 / Unit
View Datasheet →DSPIC33EP32GP502T-E/SO
✅ Drop-In✓ In Stock
$3.42 / Unit
View Datasheet →DSPIC33EP32MC202-I/SO
✅ Drop-In✓ In Stock
$3.46 / Unit
View Datasheet →DSPIC33EP32GP502-I/SO
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$2.65 / Unit
View Datasheet →DSPIC33EP32MC502T-I/SO Maximum Ratings & Electrical Characteristics
| Core Architecture | 16-bit dsPIC33EP DSC core |
| Maximum CPU Speed | 70 MIPS |
| Clock Frequency | 60 MHz |
| Program Memory (Flash) | 32 KB (10.7K x 24) |
| RAM | 4 KB |
| Package | 28-SOIC |
| Mounting Type | Surface Mount |
| Operating Temperature Grade | Industrial (-40C, I suffix) |
| Packaging | Tape & Reel (T suffix) |
| Communication Interfaces | CAN, UART, SPI, I2C |
| Motor Control PWM | MCPWM peripheral |
| Analog Integration | Op-Amps, Comparators |
| Special Peripherals | PTG (Peripheral Trigger Generator) |
| RoHS Status | Compliant |
DSPIC33EP32MC502T-I/SO 28-soic Pin Configuration Guide
Pin configuration for DSPIC33EP32MC502T-I/SO (28-soic 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-I/SO.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33EP32MC502T-I/SO is suitable for 6 applications: BLDC / PMSM Motor Drives, Digital Power Supplies and PFC, CAN-Based Industrial Control Nodes, Sensor Signal Conditioning, Embedded Motion and Robotics, HVAC and Appliance Motor Control.
BLDC / PMSM Motor Drives
The DSPIC33EP32MC502T-I/SO fits brushless DC and permanent-magnet synchronous motor drives because its MCPWM peripheral generates the complementary PWM pairs a three-phase inverter requires, while the 70 MIPS core executes field-oriented control current loops with cycle-level determinism. On-chip op-amps condition shunt-resistor current feedback and comparators provide hardware overcurrent trip without CPU latency, according to Microchip's family description of quieter, energy-efficient precision motor control. In a typical 24V-48V drive, the DSC reads phase currents through the integrated amplifiers, runs Clarke/Park transforms in DSP instructions, and updates PWM duty at 10-20 kHz loop rates. The trade-off is that 32KB Flash must hold the FOC firmware plus protection state machines, so code size should be profiled early; 4KB RAM covers state variables and fast control math for single-motor designs.
Recommended
Digital Power Supplies and PFC
For digital power supplies, power factor correction stages, and DC-DC converters, the DSPIC33EP32MC502T-I/SO provides the high-speed PWM resolution and fast control interrupts needed to regulate voltage and current loops in the tens-of-kilohertz to hundreds-of-kilohertz range. The 70 MIPS dsPIC33EP core executes PI compensation in a few microseconds, and the Peripheral Trigger Generator can chain ADC sampling to PWM events in hardware, keeping loop timing deterministic even under interrupt load. On-chip comparators implement cycle-by-cycle current limiting for fault protection independent of software. Compared with a general-purpose MCU, the integrated op-amps reduce external signal-conditioning BOM cost on the feedback path. Designers should budget the 32KB Flash carefully when adding communication supervision, and the 28-SOIC package keeps the controller footprint small on dense power boards.
Recommended
CAN-Based Industrial Control Nodes
Industrial automation nodes benefit from the DSPIC33EP32MC502T-I/SO's integrated CAN module, which connects the controller to plant networks such as CANopen-based drive and I/O systems without an external CAN controller. The 16-bit 70 MIPS core handles protocol stacks alongside local control tasks, and the PTG peripheral automates trigger sequences to reduce CPU overhead in periodic sampling applications. Distributor data lists CAN, MCPWM, op-amps, comparators, and PTG as the defining peripheral set of this part. In practice the DSC serves as an intelligent actuator controller: it receives CAN commands, runs local servo or pump-control loops with MCPWM, and reports diagnostics back on the bus. With only 32KB Flash, engineers should use a compact CAN stack and verify code fit, or step up to a larger dsPIC33EP family member if the application grows.
Recommended
Sensor Signal Conditioning
The DSPIC33EP32MC502T-I/SO consolidates analog signal conditioning and digital processing in one 28-SOIC device: its integrated operational amplifiers amplify small sensor signals (shunt currents, thermistor bridges, pressure-sensor outputs), while on-chip comparators provide threshold detection and the ADC digitizes results for the 16-bit core. This integration removes external op-amp and comparator ICs, cutting board area and BOM cost in cost-sensitive industrial equipment. The PTG can sequence periodic ADC conversions autonomously, allowing the CPU to sleep or service other tasks between samples - useful in battery-backed or low-duty-cycle monitoring nodes. Performance consideration: the industrial temperature grade (-40C, I suffix) supports unconditioned factory-floor environments, and the 70 MIPS headroom lets one chip perform filtering, calibration math, and communication simultaneously. Verify analog channel assignments against the datasheet pin diagram when routing the 28-pin footprint.
Recommended
Embedded Motion and Robotics
Robotics subsystems - joint drivers, gripper controllers, and mobile-robot wheel drives - use the DSPIC33EP32MC502T-I/SO to run servo loops locally while a host processor handles path planning. The MCPWM peripheral drives H-bridges or three-phase inverters, integrated comparators protect against stall and overcurrent in hardware, and the CAN module links the joint controller to the robot's main bus, a common topology in modular robotic arms. The 70 MIPS core executes trajectory interpolation incrementally at each servo tick alongside the current loop, keeping the 16-bit DSC responsive within a single 28-pin component. Flash sizing is the main constraint: servo firmware with a compact CAN stack fits in 32KB, but adding fieldbus profiles such as full CANopen device profiles may require stepping up to larger dsPIC33EP MC parts in the same family. Tape-and-reel packaging suits automated production of motion-control boards.
Recommended
HVAC and Appliance Motor Control
Household and commercial appliances - fans, compressors, pumps, and blowers - use the DSPIC33EP32MC502T-I/SO for sensorless BLDC control that Microchip says delivers quieter, more energy-efficient operation with extended life versus brushed alternatives. The MCPWM peripheral generates the phase-commutation waveform, back-EMF or shunt feedback is handled through the on-chip op-amps and comparators, and the 70 MIPS core runs the sensorless estimation algorithm within the switching period. The industrial temperature rating covers appliance interior environments, and the low pin count 28-SOIC keeps controller cost and board space low for high-volume manufacturing - the tape-and-reel T suffix supports automated pick-and-place at appliance production scale. Design consideration: appliance EMC requirements make careful PWM edge-rate control and grounding important; the datasheet family reference manual covers MCPWM dead-time and fault configuration for these designs.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33EP32MC502T-I/SO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33EP32MC502-I/SO | DSPIC33EP32MC502T-E/SO | DSPIC33EP32MC202-I/SO | DSPIC33EP32GP502T-E/SO |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SOIC | 28-SOIC - same | 28-SOIC - same | 28-SOIC - same | 28-SOIC - same |
| CPU Performance | 70 MIPS, 16-bit | 70 MIPS, 16-bit | 70 MIPS, 16-bit | 70 MIPS, 16-bit | 70 MIPS, 16-bit |
| Motor-Control Peripherals (MCPWM, op-amps) | Yes | Yes | Yes | MCPWM yes; reduced analog | No (GP variant) |
| CAN | Yes | Yes | Yes | Yes | Yes |
| Temperature Grade | Industrial (I) | Industrial (I) | Extended (E), AEC-Q100 | Industrial (I) | Extended (E) |
| Packaging Format | Tape & Reel (T) | Tube | Tape & Reel (T) | Tube | Tape & Reel (T) |
Key Differentiators
- Integrated motor-control analog (MCPWM + op-amps + comparators) (vs DSPIC33EP32GP502T-E/SO)
- Automotive-grade drop-in option available on the same footprint (vs DSPIC33EP32MC502T-E/SO)
- Full analog integration vs cost-down sibling (vs DSPIC33EP32MC202-I/SO)
Design Notes
Budget the 32KB Flash before committing to this part number. FOC motor-control firmware plus a compact CAN stack fits, but a full CANopen profile or bootloader + application combination may exceed capacity. Because the dsPIC33EP MC family is upward pin-compatible within the same package style, planning a footprint that also accepts larger-memory family members simplifies a late-stage upgrade. Estimate code size early in the compiler map file rather than at integration.
Decouple each VDD pin with a 0.1 uF ceramic capacitor placed within a few millimeters of the pin, with a bulk 4.7-10 uF capacitor near the supply entry. Keep the MCPWM output traces away from analog op-amp inputs and the oscillator circuit to prevent PWM coupling into the ADC front end. Use a solid ground plane under the 28-SOIC and route analog feedback traces short and away from high-current motor paths.
Estimated: supply the DSC at its nominal 3.3V rail; at 70 MIPS with all peripherals active, core current is typically in the tens of milliamperes class, so a small LDO or buck output sized at 100-150 mA covers the controller plus pin loads with margin. Verify exact figures against the electrical characteristics section of the manufacturer datasheet, since the verified web data does not include supply current values.
When using the on-chip op-amps for current sensing in a motor drive, place shunt resistors close to the DSC and use Kelvin sensing to the amplifier input pins. The integrated comparators give hardware-level overcurrent trip - configure the PWM fault input so a comparator event blanks outputs in hardware within one PWM cycle, independent of interrupt latency, as described in the family reference manual's MCPWM fault handling.
Compliance Information
RoHS/lead-free status typical for active Microchip dsPIC33EP parts; this I-grade part is not AEC-Q100 qualified - the E-grade variant DSPIC33EP32MC502T-E/SO is AEC-Q100 qualified per Microchip USA listings.
