DSPIC33EP512MC502-I/SP - 16-bit DSC 70 MIPS 512KB Flash | Microchip
MPN: DSPIC33EP512MC502-I/SP ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $7.15 | $7.15 |
| 10 | $6.58 | $65.80 |
| 100 | $5.92 | $592.00 |
| 500 | $5.4 | $2,700.00 |
| 1,000 | $4.95 | $4,950.00 |
DSPIC33EP512MC502-I/SP Overview
A digital signal controller combines the compute engine of a microcontroller with DSP-grade arithmetic hardware, sitting in the system hierarchy between general-purpose microcontrollers and dedicated digital signal processors. In a motor control system, the DSC executes control-loop firmware, field-oriented control math, and communication stacks on a single chip, replacing discrete MCU-plus-DSP architectures.
Key differentiating features of this device include a Motor Control PWM (MCPWM) module with complementary outputs and dead-time generation, a Quadrature Encoder Interface (QEI) for position feedback, integrated analog op amps and comparators, and Controller Area Network (CAN) 2.0B connectivity. Four DMA channels move peripheral data without CPU intervention, and five timers plus a Peripheral Trigger Generator (PTG) support autonomous sequenced operation.
Architecturally, the dsPIC33E core executes a 24-bit instruction width from a modified Harvard pipeline, reaching 70 MIPS at the 60 MHz internal clock via an on-chip PLL. The DSP engine provides 40-bit accumulators, single-cycle MAC, and barrel shifting, which accelerates FOC, Clarke/Park transforms, and digital filtering.
Typical applications include brushless DC and permanent-magnet synchronous motor drives for appliances, HVAC blowers, industrial pumps and fans, plus power conversion such as digital PFC and inverters, and CAN-networked industrial nodes.
When designing, note that the 3.0V to 3.6V supply and through-hole SPDIP footprint favor prototyping and low-volume industrial equipment; use ICSP programming with any matched PGECx/PGEDx pair.
This page synthesizes distributor pricing, same-family drop-in variants, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for DSPIC33EP512MC502-I/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-I/SP (same form factor and footprint) — differing in Program Memory (Flash), Mounting Type, Package, ADC, Core Architecture.
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Request AlternativesDSPIC33EP512MC502-I/SP Maximum Ratings & Electrical Characteristics
| Core Architecture | 16-bit dsPIC33E DSC |
| Max CPU Speed | 70 MIPS |
| Clock Frequency | 60 MHz |
| Program Memory (Flash) | 512 KB (49,152 words x 24-bit) |
| SRAM | 48 KB |
| Supply Voltage | 3.0 V to 3.6 V (nominal 3.3 V) |
| DMA Channels | 4 |
| Timers | 5 |
| Motor Control PWM (MCPWM) | Yes, complementary outputs with dead-time |
| Quadrature Encoder Interface | Yes (QEI) |
| Integrated Op Amps | Yes |
| Comparators | Yes |
| CAN | CAN 2.0B |
| Peripheral Trigger Generator (PTG) | Yes |
| Package | 28-pin SPDIP (0.300 in, 7.62 mm) |
| Operating Temperature | -40C to +85C (industrial, I suffix) |
| Mounting Type | Through-Hole |
| Programming Interface | ICSP (PGECx/PGEDx pairs) |
DSPIC33EP512MC502-I/SP Pin Configuration
| Pin 1 | MCLR — Master clear reset (active low), programming voltage input |
| Pin 2 | AN0/VREF+/RB0 — Analog input 0 / ADC positive reference / port B0 |
| Pin 3 | AN1/VREF-/RB1 — Analog input 1 / ADC negative reference / port B1 |
| Pin 4 | AN2/SS1IN/RB2 — Analog input 2 / SPI slave select 1 / port B2 |
| Pin 5 | AN3/INDX/RB3 — Analog input 3 / QEI index / port B3 |
| Pin 6 | AN4/QEA/RB4 — Analog input 4 / QEI channel A / port B4 |
| Pin 7 | VDD — Positive supply (3.0 V to 3.6 V) |
| Pin 8 | VSS — Ground reference |
| Pin 9 | OSC1/CLKI — Oscillator crystal input / external clock input |
| Pin 10 | OSC2/CLKO — Oscillator crystal output / clock output |
| Pin 11 | RB5 — General purpose I/O / SOSC input function / port B5 |
| Pin 12 | SOSCO/RA4 — Secondary oscillator output / Timer1 clock / port A4 |
| Pin 13 | VDD — Positive supply |
| Pin 14 | VSS — Ground reference |
| Pin 15 | RP2/RB6 — Remappable peripheral pin RP2 / port B6 |
| Pin 16 | RP3/RB7 — Remappable peripheral pin RP3 / port B7 |
| Pin 17 | RP4/RB8 — Remappable peripheral pin RP4 / port B8 |
| Pin 18 | RP13/RB9 — Remappable peripheral pin RP13 / port B9 |
| Pin 19 | VDD — Positive supply |
| Pin 20 | VSS — Ground reference |
| Pin 21 | RP5/RB10 — Remappable peripheral pin RP5 / port B10 |
| Pin 22 | RP6/RB11 — Remappable peripheral pin RP6 / port B11 |
| Pin 23 | RP0/RB12 — Remappable peripheral pin RP0 / port B12 |
| Pin 24 | RP1/RB13 — Remappable peripheral pin RP1 / port B13 |
| Pin 25 | RP12/RB14 — Remappable peripheral pin RP12 / port B14 |
| Pin 26 | RP11/RB15 — Remappable peripheral pin RP11 / port B15 |
| Pin 27 | AVSS — Analog ground reference |
| Pin 28 | AVDD — Analog positive supply reference |
Typical Applications
DSPIC33EP512MC502-I/SP is suitable for 6 applications: Brushless DC Motor Drives, Digital Power Conversion, CAN-Networked Industrial Nodes, Sensor Signal Conditioning and Measurement, HVAC and Appliance Control, Embedded Prototyping and Education.
Brushless DC Motor Drives
The DSPIC33EP512MC502-I/SP is purpose-built for BLDC and PMSM motor control: its MCPWM module generates complementary six-step or sinusoidal PWM with hardware dead-time insertion, while the QEI decodes incremental encoder position for closed-loop speed regulation. The 70 MIPS DSP engine with single-cycle MAC executes field-oriented control math, Clarke and Park transforms, and current PI loops within 10-20 kHz control periods. Integrated op amps condition shunt-resistor current feedback and comparators provide cycle-by-cycle overcurrent protection. In appliances, HVAC blowers, pumps, and industrial fans, the DSC delivers quieter, more energy-efficient operation than open-loop trapezoidal schemes, replacing analog control circuitry with a single 28-pin SPDIP device that also handles CAN communication to supervisory controllers.
Recommended
Digital Power Conversion
In switch-mode power supplies, digital PFC stages, and inverters, the DSPIC33EP512MC502-I/SP provides the deterministic 70 MIPS execution and high-resolution PWM timing required for current-mode control. The MCPWM module's complementary outputs with programmable dead-time prevent bridge shoot-through, and the ADC (triggered synchronously from the PWM by the Peripheral Trigger Generator) samples inductor current at constant phase for low-jitter control. The 40-bit DSP accumulators support notch filtering and power-balance algorithms, while 4 DMA channels stream conversion results without CPU loading. Compared to analog controllers, this DSC enables adaptive compensation over load and temperature, soft-start and fault sequencing in firmware, and PMBus/CAN reporting, all on one chip suited to solar micro-inverters, telecom rectifiers, and LED drivers.
Recommended
CAN-Networked Industrial Nodes
With an integrated CAN 2.0B controller, the DSPIC33EP512MC502-I/SP connects directly to industrial automation and vehicle bus networks via an external transceiver such as the MCP2551. The 70 MIPS core runs the application logic, the CAN stack, and DSP filtering concurrently, while 4 DMA channels offload message buffering and 512 KB Flash retains protocol tables, calibration data, and logging code with headroom for OTA-safe dual-image firmware. Typical nodes include sensor conditioning units using the on-chip op amps, actuator controllers driving loads through the MCPWM outputs, and gateways bridging CAN to UART or SPI peripherals. The industrial -40C to +85C rating and through-hole SPDIP package make the part convenient for serviceable, low-volume industrial equipment where field replacement matters.
Recommended
Sensor Signal Conditioning and Measurement
The on-chip analog op amps, comparators, and 10/12-bit ADCs let the DSPIC33EP512MC502-I/SP close analog signal chains internally: amplify bridge or shunt signals with the integrated op amps, threshold-detect faults with comparators, and digitize for DSP filtering (IIR/FIR) on the 70 MIPS engine with 40-bit accumulation. The Peripheral Trigger Generator sequences ADC sampling autonomously, ensuring deterministic timestamping for vibration, acoustic, or power-quality measurements. 512 KB Flash stores lookup tables and calibration curves, and 48 KB SRAM buffers waveforms for spectral analysis. Applications include flow meters, weigh scales, ultrasonic sensors, and condition-monitoring probes, where the DSC replaces separate amplifier, ADC, and MCU chips, reducing BOM count while the CAN interface streams results to host systems.
Recommended
HVAC and Appliance Control
High-efficiency appliances, air conditioners, and ventilation systems use sensorless or encoder-fed PMSM compressors and blowers - exactly the workload the DSPIC33EP512MC502-I/SP was designed for. Its MCPWM with dead-time drives IGBT or MOSFET inverter bridges, QEI reads position when encoders are fitted, and integrated comparators enforce hardware overcurrent trips independent of firmware latency. The 70 MIPS core runs FOC at multi-kilohertz rates while simultaneously managing user interfaces (UART/SPI), CAN communication to the main appliance controller, and housekeeping ADC tasks via DMA. The wide -40C to +85C industrial rating tolerates hot compressor enclosures, and the SPDIP package simplifies prototyping and in-field board repair typical of the appliance service ecosystem.
Recommended
Embedded Prototyping and Education
The 28-pin SPDIP through-hole package of the DSPIC33EP512MC502-I/SP fits standard 0.300 inch sockets and solderless breadboard adapters, making it a natural choice for university DSP and motor-control labs, maker projects, and engineering prototypes. Students can exercise the 70 MIPS dsPIC33E pipeline, DSP MAC instructions, MCPWM waveform generation, and ICSP programming with low-cost PICkit tools under MPLAB X with the XC16 compiler. The 512 KB Flash accommodates substantial example codebases, and the Peripheral Trigger Generator illustrates real-time peripheral coupling concepts. Compared with surface-mount-only DSCs, the SPDIP tolerates repeated rework, soldering practice, and socketed reuse, lowering the cost per lab station while teaching the same industrial-grade architecture used in commercial motor drives.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33EP512MC502-I/SP — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33EP256MC502-I/SP | DSPIC33EP128MC502-I/SP | DSPIC33EP64MC502-I/SP | DSPIC33EP32MC502-I/SP |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-pin SPDIP | 28-pin SPDIP - same | 28-pin SPDIP - same | 28-pin SPDIP - same | 28-pin SPDIP - same |
| Flash Memory | 512 KB | 256 KB | 128 KB | 64 KB | 32 KB |
| SRAM | 48 KB | 48 KB | 48 KB | 48 KB | 48 KB |
| CPU Speed | 70 MIPS (60 MHz) | 70 MIPS (60 MHz) | 70 MIPS (60 MHz) | 70 MIPS (60 MHz) | 70 MIPS (60 MHz) |
| MCPWM / QEI | Yes / Yes | Yes / Yes | Yes / Yes | Yes / Yes | Yes / Yes |
| 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 |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
Key Differentiators
- Largest Flash in the SPDIP-28 MC502 family (vs DSPIC33EP256MC502-I/SP)
- Motor-control peripheral set vs GP variant (vs dsPIC33EP512GP502)
- Through-hole SPDIP vs surface-mount siblings (vs DSPIC33EP512MC502-I/SS)
Design Notes
The DSPIC33EP512MC502-I/SP requires a 3.0V to 3.6V supply; it is not 5V tolerant. Derive VDD from an LDO such as the MCP1702-3302 when interfacing legacy 5V industrial circuits, and level-shift any 5V digital signals. Decouple each VDD pin (7, 13, 19) and AVDD (28) with 100 nF ceramics plus one bulk 4.7-10 uF capacitor. Keep AVDD clean via an RC filter or ferrite bead from VDD, since ADC accuracy depends directly on AVDD ripple.
In the SPDIP-28 footprint, place the crystal at pins 9/10 with traces shorter than 20 mm and ground guard rings around OSC1/OSC2 to avoid startup problems at the 60 MHz PLL frequencies. Route ICSP (MCLR, PGECx/PGEDx) to a 5-pin header with a 100-ohm... actually use a series resistor on MCLR per Microchip programming specs - never drive MCLR directly from logic. For motor-control use, keep PWM output traces away from the encoder (QEA/QEB/INDX) and oscillator nets to prevent coupling-induced position errors.
ICSP requires a matched PGECx/PGEDx pair - PGEC2 must be used with PGED2, never mixed pairs, per Microchip's dsPIC33EP512MC502 documentation. Peripheral pin select (RPx) mapping must be unlocked before configuration and locked after; forgetting the lock sequence is a frequent cause of UART/PWM pins not routing. Enable brown-out reset in production firmware, since the 70 MIPS core can misexecute during slow supply ramps. Finally, verify errata for the dsPIC33EP family revision you receive before finalizing PLL settings.
Compliance Information
Current Microchip production parts are supplied lead-free/RoHS-compliant as standard; obtain official certificates from Microchip's environmental documentation portal for exact RoHS/REACH declarations.
