DSPIC33EP32MC502T-I/SS - 16-bit DSC, 32KB Flash | Microchip
MPN: DSPIC33EP32MC502T-I/SS ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.28 | $4.28 |
| 10 | $3.85 | $38.50 |
| 100 | $3.42 | $342.00 |
| 500 | $3.05 | $1,525.00 |
| 1,000 | $2.74 | $2,740.00 |
DSPIC33EP32MC502T-I/SS Overview
A digital signal controller combines the computational core of a microcontroller with DSP-style arithmetic (multiply-accumulate, division support, DSP engine) in a single device. Within the power-management hierarchy, DSCs sit between general-purpose MCUs and dedicated DSPs, making them the de facto standard for real-time closed-loop control such as field-oriented motor control.
Key features include the Motor Control PWM (MCPWM) module with complementary outputs and dead-time insertion, integrated operational amplifiers and analog comparators for current sensing, a Peripheral Trigger Generator (PTG), CAN 2.0B for industrial networking, and multiple serial interfaces for communications and debugging. These peripherals significantly reduce external component count in drive electronics.
Architecturally, the dsPIC33EP core executes an optimized C compiler-friendly instruction set with hardware DSP support, allowing Field-Oriented Control (FOC) loops for BLDC and permanent-magnet synchronous motors to run with high loop rates and deterministic latency. Internal flash self-programming, watchdog timer, and brown-out reset support robust industrial designs.
Typical applications include brushless DC and PMSM motor drives, power inverters and UPS systems, digital power supplies (PFC, LLC), embedded industrial networking nodes using CAN, and HVAC compressor control where energy efficiency and acoustic quietness are required.
Design consideration: the dsPIC33EP core requires a VCAP/VDDCORE external stabilizing capacitor; incorrect capacitor selection or placement is the most common cause of startup failure, so follow the manufacturer datasheet layout guidance closely.
This page synthesizes verified distributor data, same-package drop-in family alternatives, and practical design guidance not consolidated in the manufacturer datasheet.
Drop-in alternatives for DSPIC33EP32MC502T-I/SS — 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/SS (same form factor and footprint) — differing in RAM, Package, Analog Peripherals, Core Architecture, PWM Module.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33EP32MC202T-I/SS
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP256MC202T-I/SS
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$3.38 / Unit
View Datasheet →DSPIC33EP64MC502-I/SS
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP128MC502-I/SS
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$2.55 / Unit
View Datasheet →DSPIC33EP32GP502-I/SS
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP32MC502T-I/SS Maximum Ratings & Electrical Characteristics
| Core Architecture | 16-bit dsPIC33EP DSC |
| Program Memory (Flash) | 32 KB (10.7K x 24) |
| RAM | 4 KB |
| Maximum Clock Frequency | 60 MHz |
| Core Performance Class | Up to 70 MIPS (dsPIC33EP family) |
| Package | 28-SSOP (SS) |
| Operating Temperature Range | -40C to +85C (Industrial, I grade) |
| PWM Module | Motor Control PWM (MCPWM) |
| Analog Peripherals | Op Amps, Comparators |
| Communication Interfaces | CAN, UART, SPI, I2C |
| Peripheral Trigger Generator | Yes (PTG) |
| Mounting Type | Surface Mount |
| Packaging | Tape & Reel (T suffix) |
DSPIC33EP32MC502T-I/SS 28-ssop (ss) Pin Configuration Guide
Pin configuration for DSPIC33EP32MC502T-I/SS (28-ssop (ss) 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/SS.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33EP32MC502T-I/SS is suitable for 6 applications: BLDC / PMSM Motor Control, Digital Power Supplies, Industrial CAN Networking Nodes, HVAC Compressor Drives, Embedded Sensing and Signal Conditioning, Appliance and Consumer Equipment Control.
BLDC / PMSM Motor Control
The DSPIC33EP32MC502T-I/SS is purpose-built for brushless DC and permanent-magnet synchronous motor drives. Its Motor Control PWM module generates complementary PWM pairs with hardware dead-time insertion, while the 60 MHz 16-bit core executes field-oriented control loops at the kHz rates needed for smooth torque. The integrated op amp and comparators condition shunt-resistor current feedback directly on-chip, reducing external component count. In a typical three-phase inverter, the MCPWM drives a gate-driver stage, and the analog peripherals close the current loop internally, yielding energy-efficient, acoustically quiet operation as stated in Microchip's family overview.
Recommended
Digital Power Supplies
In digitally controlled power converters such as PFC stages, LLC resonant converters, and UPS inverters, the DSPIC33EP32MC502T-I/SS provides the deterministic control timing required for voltage- and current-mode loops. The MCPWM module's complementary outputs with dead-time control suit half-bridge and full-bridge topologies, and the fast 16-bit core handles the PID and predictive control mathematics in firmware. Its 4KB RAM supports multi-loop control state storage, and the PTG can sequence ADC sampling and PWM updates with minimal CPU intervention, freeing MIPS for supervisory tasks such as fault handling and communication.
Recommended
Industrial CAN Networking Nodes
With an integrated CAN 2.0B controller, the DSPIC33EP32MC502T-I/SS serves as a compact industrial network node for motor drives, building automation, and agricultural equipment. The CAN peripheral implements the full protocol in hardware, so firmware only manages message buffers, keeping the 60 MHz core available for application logic. Node designs typically pair the DSC with an external CAN transceiver on the physical bus. Because the same package family scales from 32KB to 256KB Flash, a CAN node's firmware can grow with features such as diagnostics and OTA-style field updates without a PCB redesign.
Recommended
HVAC Compressor Drives
Variable-speed compressor drives in HVAC and refrigeration benefit directly from the DSPIC33EP32MC502T-I/SS. Microchip explicitly targets the dsPIC33E family at more energy-efficient and quieter motor operation, which maps to compressor requirements for efficiency standards and low acoustic noise. The MCPWM's dead-time control protects the inverter bridge, and the on-chip comparators implement cycle-by-cycle overcurrent protection with no CPU latency, improving robustness. The industrial -40C to +85C temperature grade of the I suffix accommodates unconditioned outdoor equipment enclosures commonly found in HVAC installations.
Recommended
Embedded Sensing and Signal Conditioning
The integrated operational amplifier, comparators, and Peripheral Trigger Generator make the DSPIC33EP32MC502T-I/SS suitable for sensor acquisition nodes that need local signal conditioning and decision logic. The op amp can amplify low-level sensor outputs before internal sampling, comparators provide autonomous threshold detection, and the PTG sequences acquisition with minimal CPU load. Applications include current, pressure, and position sensing in industrial equipment. The 32KB Flash is ample for calibration tables, filtering, and a serial or CAN reporting stack, while the 28-SSOP footprint fits compact sensor PCBs.
Recommended
Appliance and Consumer Equipment Control
Household appliances such as fans, pumps, and small compressors use the DSPIC33EP32MC502T-I/SS to replace ac induction triac control with efficient BLDC drives, improving energy labeling scores and reducing noise. The MCPWM plus integrated analog minimizes bill-of-material cost in cost-sensitive appliance designs, while UART or I2C links connect to user interfaces. Microchip's extensive motor-control software libraries and free compiler options shorten development cycles. The tape-and-reel T suffix suits high-volume SMT appliance assembly, and pin-compatible family members let manufacturers reuse one PCB across product tiers with different flash sizes.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33EP32MC502T-I/SS — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33EP32MC202T-I/SS | DSPIC33EP256MC202T-I/SS | DSPIC33EP32GP502-I/SS |
|---|---|---|---|---|
| Package | 28-SSOP | 28-SSOP - same | 28-SSOP - same | 28-SSOP - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Program Memory | 32 KB | 32 KB | 256 KB | 32 KB |
| Maximum Clock Frequency | 60 MHz | 60 MHz | 60 MHz | 60 MHz |
| CAN Interface | Yes (CAN 2.0B) | No | No | Yes (CAN 2.0B) |
| Motor Control PWM (MCPWM) | Yes | Yes | Yes | No (standard PWM) |
| Integrated Op Amp | Yes | No | No | No |
| Operating Temperature | -40C to +85C (I) | -40C to +85C (I) | -40C to +85C (I) | -40C to +85C (I) |
Key Differentiators
- Integrated CAN 2.0B controller (vs DSPIC33EP32MC202T-I/SS)
- Only MC sub-family member with on-chip op amp at 32KB (vs DSPIC33EP256MC202T-I/SS)
- Dedicated Motor Control PWM (vs DSPIC33EP32GP502-I/SS)
Design Notes
The dsPIC33EP core generates an internal regulated supply that requires an external stabilizing capacitor on the VCAP/VDDCORE pin (pin 14 in 28-SSOP). Use the exact capacitance and ESR specified in the manufacturer datasheet and place it within a few millimeters of the pin with a short ground return. Omitting or under-sizing this capacitor is the most frequently reported cause of brown-out during power-up and sporadic reset behavior. Never draw external load current from the VCAP node.
Use a solid ground plane and place the 0.1uF decoupling capacitor directly across VDD (pin 11) and VSS (pins 8, 17) with minimum trace length. Keep the MCPWM outputs and their gate-driver traces away from analog current-sense routing to the on-chip op amp inputs, since switching noise coupling into the current loop degrades FOC torque accuracy. Route the oscillator (pins 9-10) away from PWM traces and guard it with ground for stable 60 MHz operation.
The T suffix means tape-and-reel (reel quantity approximately 2800); small prototype orders should use the non-T part number DSPIC33EP32MC502-I/SS cut-tape packaging. Additionally, most digital functions are remappable via Peripheral Pin Select (PPS): failing to configure PPS registers in initialization code is a common firmware bug that leaves UART, SPI, and PWM pins floating. Verify configuration-bit settings (watchdog, oscillator source, brown-out) match the target board before first programming.
Compliance Information
Compliance status not explicitly stated in the provided distributor snippets; verify on Microchip's official product page environmental datasheet.
