DSPIC33EP512MC502-E/SP - 70MIPS DSC, 512KB Flash | Microchip
MPN: DSPIC33EP512MC502-E/SP ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.2 | $6.20 |
| 10 | $5.58 | $55.80 |
| 100 | $4.96 | $496.00 |
| 500 | $4.46 | $2,230.00 |
| 1,000 | $3.97 | $3,970.00 |
DSPIC33EP512MC502-E/SP Overview
A digital signal controller combines the computational architecture of a microcontroller with DSP capability: a modified Harvard 16-bit core executing single-cycle MAC and 40-bit accumulator operations, plus fast interrupts for tight control loops. DSCs sit between general-purpose MCUs and dedicated DSPs in the embedded hierarchy, making them the natural choice for closed-loop power and motion electronics.
Key features include the 70 MIPS core clocked from internal PLL up to 60 MIPS Fcy-class operation, on-chip high-speed MCPWM module supporting complementary and center-aligned outputs, quadrature encoder interface (QEI) for motor feedback, a 10-bit/12-bit ADC with multiple sample-and-hold circuits, and dual PGEC/PGED pairs for in-circuit serial programming (ICSP).
Architecturally, the dsPIC33EP generation integrates a hardware DSP engine (17-bit x 17-bit multiplier, dual 40-bit accumulators), a flexible peripheral pin select (PPS) scheme allowing digital peripherals to be remapped across RPx pins, and 3.3V operation across the full industrial and extended temperature ranges. The family is aimed at precision motor control for brushless DC (BLDC), permanent magnet synchronous (PMSM), AC induction and stepper machines.
Typical applications include sensorless FOC motor drives, solar inverters and power factor correction stages, digital power supplies, and industrial automation nodes. The through-hole SPDIP package suits prototyping, breadboarding, and industrial equipment with socketed controllers.
Design consideration: place a low-ESR capacitor on the VCAP pin for internal regulator stability, and use the dedicated PGEC/PGED pairs consistently for programming.
This page synthesizes distributor availability, drop-in family alternatives, and design notes not found on the manufacturer product page.
Drop-in alternatives for DSPIC33EP512MC502-E/SP — 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 DSPIC33EP512MC502-E/SP (same form factor and footprint) — differing in Operating Temperature, Program Memory (Flash), Supply Voltage.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33EP512MC502-I/SP
✅ Drop-In✓ In Stock
$4.95 / Unit
View Datasheet →DSPIC33EP256MC502-E/SP
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$5.25 / Unit
View Datasheet →DSPIC33EP256MC502-I/SP
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP128MC502-I/SP
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$3.55 / Unit
View Datasheet →DSPIC33EP64MC502-I/SP
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$2.98 / Unit
View Datasheet →DSPIC33EP512MC502-E/SS
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33EP512MC502-E/SP Maximum Ratings & Electrical Characteristics
| Core | dsPIC33E 16-bit DSC core |
| CPU Speed | 60 MHz core, up to 70 MIPS |
| Program Memory (Flash) | 512 KB (170K x 24-bit) |
| SRAM | 48 KB |
| Supply Voltage | 3.0 V to 3.6 V (3.3 V nominal) |
| Operating Temperature | -40C to +125C (Extended, E suffix) |
| Package | 28-pin SPDIP (0.300 in, 7.62 mm) |
| Mounting Type | Through-Hole |
| PWM | High-Speed MCPWM with complementary outputs and dead time |
| Encoder Interface | Quadrature Encoder Interface (QEI) |
| ADC | 10-bit / 12-bit ADC with multiple S/H, advanced analog |
| Peripheral Pin Select | Yes (RPx remapping) |
| Debug/Programming | ICSP via PGECx/PGEDx pairs (ICD, REAL ICE, PICkit) |
| Qualification | AEC-Q100 capable family (automotive grade per series) |
| RoHS Status | Compliant |
| Applications | Precision motor control: BLDC, PMSM, AC induction, stepper |
DSPIC33EP512MC502-E/SP Pin Configuration
| Pin 1 | MCLR — Master clear reset (active low) / programming voltage input |
| Pin 2 | AN0/VREF+/CN2/RB0 — Analog input 0 / positive voltage reference / change notification |
| Pin 3 | AN1/VREF-/CN3/RB1 — Analog input 1 / negative voltage reference / change notification |
| Pin 4 | AN2/SS1/CN4/RB2 — Analog input 2 / SPI slave select 1 |
| Pin 5 | AN3/IND0/CN5/RB3 — Analog input 3 / index input 0 (QEI) |
| Pin 6 | AN4/OC1/CN6/RB4 — Analog input 4 / output compare 1 |
| Pin 7 | AN5/IC1/OC2/CN7/RB5 — Analog input 5 / input capture 1 / output compare 2 |
| Pin 8 | VSS — Ground reference |
| Pin 9 | OSC1/CLKI — External oscillator / clock input |
| Pin 10 | OSC2/CLKO — Oscillator output / clock output |
| Pin 11 | VDD — Positive supply (3.0-3.6 V) |
| Pin 12 | RP15/PGD3/SOSCI/CN1/RA2 — Peripheral pin select / programming data 3 / secondary oscillator input |
| Pin 13 | RP14/PGC3/SOSCO/T1CK/CN0/RA3 — Peripheral pin select / programming clock 3 / secondary oscillator output |
| Pin 14 | VCAP — Internal regulator capacitor connection (low-ESR cap to VSS) |
| Pin 15 | RP40/PGD1/RF3 — Peripheral pin select / programming data 1 |
| Pin 16 | RP39/PGC1/RF2 — Peripheral pin select / programming clock 1 |
| Pin 17 | RP2/PGD2/RA0 — Peripheral pin select / programming data 2 |
| Pin 18 | RP3/PGC2/RA1 — Peripheral pin select / programming clock 2 |
| Pin 19 | RP38/RF7 — Peripheral pin select I/O |
| Pin 20 | VDD — Positive supply (3.0-3.6 V) |
| Pin 21 | RP20/RF13 — Peripheral pin select I/O |
| Pin 22 | RP19/RF12 — Peripheral pin select I/O |
| Pin 23 | AN11/RP35/RB14 — Analog input 11 / peripheral pin select I/O |
| Pin 24 | AN10/RP34/RB13 — Analog input 10 / peripheral pin select I/O |
| Pin 25 | AN9/RP32/RB12 — Analog input 9 / peripheral pin select I/O |
| Pin 26 | VSS — Ground reference |
| Pin 27 | AN7/RP0/RB9 — Analog input 7 / peripheral pin select I/O |
| Pin 28 | AN6/RP1/RB8 — Analog input 6 / peripheral pin select I/O |
Typical Applications
DSPIC33EP512MC502-E/SP is suitable for 6 applications: BLDC Motor Control, Digital Power Supplies (PFC/LLC), Solar Inverters, Industrial Automation, Stepper Motor Drivers, Prototype and Education Platforms.
BLDC Motor Control
The DSPIC33EP512MC502-E/SP is purpose-built for brushless DC motor drives. Its high-speed MCPWM module generates complementary, center-aligned PWM pairs with hardware dead-time insertion, while the quadrature encoder interface reads position feedback and the 70 MIPS DSP core executes field-oriented control at 20 kHz+ switching frequencies. In a typical three-phase inverter, the DSC samples phase currents via its 10/12-bit ADC synchronized to the PWM carrier, running the FOC loop deterministically. The -E/SP extended temperature rating permits use in sealed motor housings where ambient exceeds +85C. The 28-pin SPDIP through-hole package simplifies prototyping and serviceable industrial drive boards. Microchip provides reference designs for sensorless and encoder-based BLDC control on this family.
Recommended
Digital Power Supplies (PFC/LLC)
Switch-mode power conversion benefits directly from this DSC's architecture: the MCPWM module's complementary outputs with dead-time control drive half-bridge and full-bridge stages for PFC, LLC, and phase-shifted topologies. The 70 MIPS core closes voltage and current loops at high bandwidth, and the ADC can trigger synchronously with PWM to sample at mid-vector, eliminating switching noise from readings. The 512 KB Flash accommodates compensation firmware, fault logging, and multi-mode operation without external memory. Extended -40C to +125C operation suits power supplies in outdoor telecom rectifiers and industrial PSU enclosures. During prototyping, the through-hole SPDIP package allows fast firmware iteration on breadboard-friendly control boards before committing to SMT production layouts.
Recommended
Solar Inverters
Grid-tied and off-grid solar inverters require simultaneous MPPT control, DC-AC modulation, and grid synchronization - a workload matched to the DSPIC33EP512MC502-E/SP. Its DSP engine performs fast multiply-accumulate operations for control algorithms, while the MCPWM module generates the PWM patterns for the boost and inverter stages with hardware dead time. The 48 KB SRAM buffers sampled waveforms for harmonic analysis and anti-islanding detection. The extended temperature range of -40C to +125C addresses combiner-box and outdoor enclosure environments. The peripheral pin select feature lets designers remap PWM and communication pins to optimize PCB routing in compact inverter designs, and the 512 KB Flash retains firmware margin for evolving grid-code compliance updates.
Recommended
Industrial Automation
In factory automation nodes, the DSPIC33EP512MC502-E/SP serves as an intelligent actuator controller combining motion output and communication input. The QEI module interfaces directly with incremental encoders on conveyor axes and robotic joints, while the MCPWM module drives servo amplifiers and stepper drivers. The 512 KB Flash stores motion profiles, and peripheral pin select simplifies wiring to SPI/UART-based fieldbus bridges. The SPDIP through-hole package suits DIN-rail control boards and socketed industrial controllers where field replacement without hot-air rework is valued. Extended -40C to +125C operation covers unconditioned cabinets and rooftop installations. Interrupt latency is short and deterministic, supporting time-critical coordination with PLC master systems over CAN or RS-485 links.
Recommended
Stepper Motor Drivers
Stepper-based motion systems - 3D printers, laboratory pumps, camera gimbals - use the DSPIC33EP512MC502-E/SP to generate microstepping waveforms with precision timing. The MCPWM module produces the phase-current sinusoidal envelopes while the 70 MIPS core computes microstep interpolation at high subdivision counts, yielding quieter and smoother motion than open-step drivers. The QEI input closes the loop with external encoders for lost-step detection. The 3.3 V logic directly interfaces opto-isolated driver inputs through simple level circuitry. The 512 KB Flash supports stored motion sequences and G-code style command interpreters, and the extended temperature rating accommodates heated build chambers in additive manufacturing equipment where ambient temperatures commonly exceed +85C.
Recommended
Prototype and Education Platforms
The 28-pin SPDIP package of the DSPIC33EP512MC502-E/SP makes it a standout for education and proof-of-concept work: it plugs into DIP sockets and breadboard adapters, supports rework with ordinary soldering irons, and survives repeated insertion cycles. The full 512 KB Flash and 70 MIPS performance of the top-density family member are available without cost-optimized silicon changes, so firmware developed on the prototype transfers directly to production SMT variants such as the -E/SS (SSOP) or -E/MM (QFN-S) with only package changes. The dual PGEC/PGED ICSP pairs work with low-cost PICkit programmers, minimizing the tool budget for university labs, hackerspaces, and small engineering teams validating motor-control or digital-power concepts.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33EP512MC502-E/SP — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33EP512MC502-I/SP | DSPIC33EP256MC502-E/SP | DSPIC33EP64MC502-I/SP |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SPDIP | 28-SPDIP - same | 28-SPDIP - same | 28-SPDIP - same |
| Program Memory (Flash) | 512 KB | 512 KB | 256 KB | 64 KB |
| SRAM | 48 KB | 48 KB | 48 KB | 48 KB |
| CPU Speed | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS |
| Operating Temperature | -40C to +125C | -40C to +85C | -40C to +125C | -40C to +85C |
| MCPWM / QEI | Yes / Yes | Yes / Yes | Yes / Yes | Yes / Yes |
| Supply Voltage | 3.0-3.6 V | 3.0-3.6 V | 3.0-3.6 V | 3.0-3.6 V |
Key Differentiators
- Maximum Flash density in the 28-pin MC502 family (vs DSPIC33EP256MC502-E/SP)
- Extended temperature operation (vs DSPIC33EP512MC502-I/SP)
- Through-hole SPDIP serviceability (vs DSPIC33EP512MC502-E/SS)
Design Notes
The VCAP pin (pin 14) powers the internal core regulator and must connect to VSS through a low-ESR capacitor of the value specified in the manufacturer datasheet. Do not load this pin externally or route traces near switching nodes. All VDD/VSS pairs (pins 11/8 and 20/26) need 100 nF ceramic decoupling placed within a few millimeters of the pins; the SPDIP geometry makes lead inductance significant, so bulk capacitance (4.7-10 uF) at the board entry helps absorb inrush during Flash write operations.
The device has multiple PGECx/PGEDx programming pin pairs; per Microchip documentation they must be used strictly as matched pairs (PGEC2 with PGED2, PGEC1 with PGED1, etc.). Mixing pairs prevents ICSP connection. Keep each PGD/PGC trace short, add series 100R resistors if the pins are shared with application circuitry, and ensure the programming tool can drive MCLR to the programming voltage. Also configure unused ANx pins to digital mode early in firmware to avoid floating-input current draw.
For motor-control designs, synchronize ADC sampling to the PWM period counter (mid-PWM trigger) to measure phase currents away from switching edges; this single firmware/layout decision eliminates most switching-noise artifacts from FOC current feedback. Route PWM outputs to gate drivers with ground-referenced return paths, and keep the analog ground under the ANx pins separate from power grounds, joining at a single star point. Peripheral pin select (PPS) allows remapping PWM pins - use it to shorten high-current gate-drive loops rather than fighting fixed pinout routing.
The -E/SP grade is rated to +125C ambient, but internal junction rise from CPU activity and I/O currents must be budgeted: estimated junction temperature equals ambient plus (core and I/O dissipation times theta-JA from the datasheet package table). Estimated: at full 70 MIPS operation with several loaded I/O pins, self-heating is typically a few tens of degrees Celsius in still air for the SPDIP package; leave at least 10-15C margin to the absolute maximum junction rating in enclosed industrial housings. Verify with the manufacturer datasheet thermal table for your exact mounting conditions.
Compliance Information
Distributor listing (Hotenda) describes the dsPIC33EP MC502 series as Automotive, AEC-Q100 qualified. RoHS and lead-free status per Microchip product data; REACH and halogen-free status not stated in provided data.
