DSPIC33EP128MC502T-E/MM - 16-bit DSC 60MIPS 128KB Flash | Microchip
MPN: DSPIC33EP128MC502T-E/MM ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $5.2 | $5.20 |
| 10 | $4.7 | $47.00 |
| 100 | $4.15 | $415.00 |
| 500 | $3.75 | $1,875.00 |
| 1,000 | $3.4 | $3,400.00 |
DSPIC33EP128MC502T-E/MM Overview
A digital signal controller combines the computational throughput of a DSP with the deterministic control peripherals of a microcontroller. In the semiconductor hierarchy it sits between a general-purpose MCU and a dedicated DSP, offering a single-cycle MAC/ DSP instruction set alongside microcontroller-style peripherals, making it the preferred architecture for real-time closed-loop control such as field-oriented motor control, digital power conversion, and embedded sensing.
Key features include the enhanced 16-bit dsPIC core with DSP engine, high-speed PWM modules with dead-time insertion and fault protection essential for motor drive applications, integrated analog with ADC and on-chip operational amplifiers per the family datasheet title (High-Speed PWM, Op Amps and Advanced Analog), and multiple UART, SPI and I2C communication interfaces.
The architecture supports In-Circuit and In-Application Programming, two program and two complex data breakpoints, and IEEE 1149.2 compatible JTAG boundary scan with trace and run-time watch, enabling robust debugging and field firmware updates. The Flash is rated for repeated program/erase cycles typical of the dsPIC33E family.
Typical applications include brushless DC (BLDC) and permanent-magnet synchronous motor (PMSM) control, digital power supplies and PFC stages, electric tool and appliance drives, automotive auxiliary motor control leveraging the AEC-Q100 qualification, and industrial motion-control nodes.
A key design consideration: power the VCAP/VDDCORE pin with the specified external capacitor, as the internal core regulator depends on it for stability; also budget the 6x6 QFN exposed thermal pad soldering for reliable ground and heat paths in motor-drive environments.
This page synthesizes distributor pricing, drop-in alternatives within the dsPIC33EP family, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for DSPIC33EP128MC502T-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 DSPIC33EP128MC502T-E/MM (same form factor and footprint) — differing in Operating Temperature, Analog Peripherals, Core, Package, CAN.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33EP128MC202T-E/MM
✅ Drop-In✓ In Stock
$3.41 / Unit
View Datasheet →DSPIC33EP128MC502T-I/MM
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33EP256MC502-E/MM
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$3.95 / Unit
View Datasheet →DSPIC33EP64MC502T-E/MM
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP32MC502T-E/MM
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$3.05 / Unit
View Datasheet →DSPIC33EP128MC502T-E/MM Maximum Ratings & Electrical Characteristics
| Core Architecture | 16-bit dsPIC DSC |
| Maximum CPU Speed | 60 MIPs (60 MHz) |
| Program Memory (Flash) | 128 KB (43K x 24) |
| RAM | 16 KB |
| Supply Voltage Range | 3.0 V to 3.6 V |
| Operating Temperature | -40C to +125C (E grade) |
| Qualification | AEC-Q100 qualified |
| Package | 28-QFN-S, 6x6 mm |
| Mounting Type | Surface Mount |
| PWM | High-speed PWM (motor control family) |
| Analog Peripherals | ADC, op amps, advanced analog (per family datasheet) |
| Communication Interfaces | UART, SPI, I2C |
| Debug / Programming | In-Circuit and In-Application Programming, JTAG (IEEE 1149.2 compatible) boundary scan |
| RoHS Status | Compliant |
| Packaging | Tape & Reel (T suffix) |
DSPIC33EP128MC502T-E/MM Pin Configuration
| Pin 1 | MCLR — Master clear reset input (active low) / programming voltage |
| Pin 2 | AN0/CN2B/RB0 — Analog input 0 / change notification / port B bit 0 |
| Pin 3 | AN1/CN3B/RB1 — Analog input 1 / change notification / port B bit 1 |
| Pin 4 | AN2/CN4B/RB2 — Analog input 2 / change notification / port B bit 2 |
| Pin 5 | AN3/CN5B/RB3 — Analog input 3 / change notification / port B bit 3 |
| Pin 6 | VSS — Ground reference |
| Pin 7 | VDD — Power supply (3.0 V to 3.6 V) |
| Pin 8 | OSC1/CLKI/RA2 — Oscillator crystal input / external clock input |
| Pin 9 | OSC2/CLKO/RA3 — Oscillator crystal output / clock output |
| Pin 10 | VCAP/VDDCORE — Internal core regulator output - connect datasheet-specified capacitor |
| Pin 11 | RPB4/AN4 — Peripheral pin select I/O / analog input 4 |
| Pin 12 | RPB5/AN5 — Peripheral pin select I/O / analog input 5 |
| Pin 13 | VSS — Ground reference |
| Pin 14 | VDD — Power supply |
| Pin 15 | RPB7/PGD2 — PPS I/O / in-circuit debug data pin (channel 2) |
| Pin 16 | RPB8/PGC2 — PPS I/O / in-circuit debug clock pin (channel 2) |
| Pin 17 | RPB9/PGD3 — PPS I/O / debug data (channel 3) |
| Pin 18 | RPB10/PGC3 — PPS I/O / debug clock (channel 3) |
| Pin 19 | RPB11 — Peripheral pin select I/O, port B bit 11 |
| Pin 20 | RPB12 — Peripheral pin select I/O, port B bit 12 |
| Pin 21 | RPB13 — Peripheral pin select I/O, port B bit 13 |
| Pin 22 | RPB14 — Peripheral pin select I/O, port B bit 14 |
| Pin 23 | RPB15 — Peripheral pin select I/O, port B bit 15 |
| Pin 24 | RPC13 — Peripheral pin select I/O, port C bit 13 |
| Pin 25 | RPC14 — Peripheral pin select I/O, port C bit 14 |
| Pin 26 | RPC15/OSC2 — Peripheral pin select I/O / secondary oscillator function |
| Pin 27 | VSS — Ground reference |
| Pin 28 | VDD — Power supply |
Typical Applications
DSPIC33EP128MC502T-E/MM is suitable for 6 applications: BLDC / PMSM Motor Control, Digital Power Conversion, Automotive Auxiliary Motor Systems, Industrial Motion and Robotics Nodes, Digital Audio and Signal Processing, Appliances and Power Tools.
BLDC / PMSM Motor Control
The DSPIC33EP128MC502T-E/MM fits brushless DC and permanent-magnet synchronous motor drives because its high-speed PWM module supports complementary outputs with programmable dead time, essential for three-phase inverter bridge control. The 60 MIPs core executes field-oriented control (FOC) loops at multi-kilohertz rates with single-cycle MAC instructions, while the integrated ADC samples phase currents synchronously with PWM boundaries. In a typical sensorless BLDC drive, the DSC generates the 6 PWM channels from the same footprint used across the MC202/MC502 family, and the 128KB Flash accommodates FOC firmware plus a communication stack. Because the E grade is AEC-Q100 qualified, the same design scales into automotive pump and fan applications without a redesign.
Recommended
Digital Power Conversion
Digital power supplies, PFC stages and LLC converters benefit from this DSC's PWM resolution and analog integration. The high-speed PWM supports frequency and duty-cycle updates on a cycle-by-cycle basis, enabling voltage-mode or current-mode digital control loops at switching frequencies well above 100 kHz. The on-chip ADC with simultaneous sampling supports peak-current-mode control, and the 60 MIPs core headroom leaves margin for protective algorithms such as cycle-by-cycle current limiting and soft-start sequencing. Using the same 28-QFN footprint family (MC202 to MC502) lets a platform team scale firmware complexity - bootloader plus protocol stack plus control loop - without changing the PCB. The AEC-Q100 E grade further suits automotive onboard-charger auxiliary rails.
Recommended
Automotive Auxiliary Motor Systems
Thanks to AEC-Q100 qualification and the -40C to +125C E temperature grade, this exact MPN is targeted at automotive auxiliary drives: coolant pumps, HVAC blowers, throttle actuators, window lifts and wiper modules. The high-speed PWM fault inputs allow hardware-level shutdown on over-current events, a functional-safety-friendly behavior, while the 128KB Flash holds diagnostics, LIN/CAN protocol handling and the motor-control algorithm in one device. The 6x6 mm QFN keeps board area small in actuator ECUs. Compared with the I-grade variant, the E grade provides the extended temperature rating needed under-hood, making it the correct drop-in choice for automotive bill-of-materials without PCB modification.
Recommended
Industrial Motion and Robotics Nodes
Factory automation and robotics nodes use this DSC for servo sub-drives, stepper control and intelligent actuator endpoints. The deterministic 60 MIPs core handles position/velocity loops while hardware quadrature decoding and PWM outputs drive the power stage; UART, SPI and I2C links connect to PLC backbones or host controllers. The JTAG boundary-scan capability (IEEE 1149.2 compatible) supports production test of populated boards, and In-Application Programming allows field firmware updates without removing the device. The 128KB Flash of the MC502 accommodates motion profiles, communication stacks and diagnostics simultaneously, which is why it is often chosen over the 64KB MC202 sibling at only a modest cost premium in industrial designs.
Recommended
Digital Audio and Signal Processing
The DSP engine of the dsPIC33EP core - single-cycle MAC, dual operand fetch and hardware saturation - makes this device suitable for embedded audio processing such as active noise control, acoustic alarms and motor-acoustic compensation. The 128KB Flash stores coefficient tables and filter implementations, while 16KB RAM buffers audio frames. The 3.0V to 3.6V supply and industrial-grade interfaces let the DSC sit directly on a 3.3V board with other peripherals. Where pure signal-processing throughput matters more than motor peripherals, the same-footprint GP variant (dsPIC33EP128GP502) is a pin-compatible drop-in, letting designers reuse the PCB while selecting the peripheral set - MC for control, GP for communications/audio-centric designs.
Recommended
Appliances and Power Tools
Consumer appliances and cordless power tools use this DSC for sensorless BLDC motor control where cost and efficiency both matter. The high-speed PWM with dead-time insertion drives the inverter bridge, ADC-triggered current sampling enables sensorless commutation algorithms, and the integrated analog reduces external component count - important in cost-sensitive tool handles and appliance mainboards. The 3.3V core supply simplifies power-tree design from a battery-backed rail. Microchip highlights that the dsPIC33E family makes motor systems more energy efficient and quieter, a direct consumer benefit. The E-grade temperature rating also covers enclosed, thermally stressed tool housings beyond the industrial I-grade limit, avoiding a derating analysis at high ambient.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33EP128MC502T-E/MM — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33EP128MC202T-E/MM | DSPIC33EP128MC502T-I/MM | DSPIC33EP256MC502-E/MM | DSPIC33EP64MC502T-E/MM | DSPIC33EP32MC502T-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-S (6x6 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core Speed | 60 MIPs | 60 MIPs | 60 MIPs | 60 MIPs | 60 MIPs | 60 MIPs |
| Operating Temperature | -40C to +125C (E) | -40C to +125C (E) | -40C to +85C (I) | -40C to +125C (E) | -40C to +125C (E) | -40C to +125C (E) |
| AEC-Q100 Qualified | Yes | E grade - automotive capable | No (industrial grade) | E grade - automotive capable | E grade - automotive capable | E grade - automotive capable |
| Supply Voltage | 3.0 V to 3.6 V | 3.0 V to 3.6 V | 3.0 V to 3.6 V | 3.0 V to 3.6 V | 3.0 V to 3.6 V | 3.0 V to 3.6 V |
Key Differentiators
- Extended temperature and automotive qualification (vs DSPIC33EP128MC502T-I/MM)
- Double the program memory of the cost-down variant (vs DSPIC33EP128MC202T-E/MM)
- Lower unit cost than the 256KB upgrade (vs DSPIC33EP256MC502-E/MM)
Design Notes
The VCAP/VDDCORE pin (pin 10) connects the internal 1.8V-class core regulator to an external stabilization capacitor. Use the exact capacitance and ESR recommended in the manufacturer datasheet and place the capacitor as close to pin 10 as physically possible; an undersized or distant capacitor causes brown-out resets or erratic core operation, particularly at 60 MIPs. Decouple each VDD pin (7, 14, 28) with a 100 nF ceramic capacitor placed within a few millimeters, plus one bulk 4.7-10 uF per supply domain.
The 28-QFN-S 6x6 mm package requires attention to the exposed pad / ground vias. Connect the center thermal pad to a solid ground plane through an array of vias to reduce ground bounce from fast PWM switching and to improve heat flow - important when the die runs at 60 MIPS with several PWM banks active in an enclosed motor-drive housing. Keep the oscillator (pins 8/9) traces short and guard them with ground; keep PWM output traces away from analog inputs AN0-AN5 to preserve ADC accuracy in phase-current sampling.
Confirm the temperature grade before assembly: E (-40C to +125C, AEC-Q100 capable) vs I (-40C to +85C) look identical on the PCB but differ in rating. Do not exceed the 3.6V absolute maximum supply; 5V signals on RP pins require level shifting. When migrating firmware between MC202 and MC502 drop-ins, verify Flash-size linker settings and RAM usage - the smaller 32/64KB parts will link but overflow at runtime if memory budgets are not checked.
Compliance Information
AEC-Q100 qualification confirmed via Microchip USA listing for this MPN. RoHS compliant per standard Microchip TM/E-grade offering; REACH and halogen-free status not stated in provided data.
