DSPIC33EP512GP502-E/SO - 70 MIPS 16-bit DSC 512KB Flash | Microchip
MPN: DSPIC33EP512GP502-E/SO ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.2 | $6.20 |
| 10 | $5.6 | $56.00 |
| 100 | $5.05 | $505.00 |
| 500 | $4.6 | $2,300.00 |
| 1,000 | $4.15 | $4,150.00 |
DSPIC33EP512GP502-E/SO Overview
A Digital Signal Controller combines the peripheral set and cost structure of a microcontroller with the multiply-accumulate throughput of a DSP. Within Microchip's hierarchy, the dsPIC33EP sits above PIC16/PIC18 MCUs and alongside PIC24EP 16-bit MCUs, targeting real-time control loops such as digital power conversion, motor control, and digital filtering that general-purpose MCUs handle poorly.
Key features include the 70 MIPS 16-bit core with DSP engine (17-bit x 17-bit multiplier, 40-bit accumulator), 512 KB of self-programmable Flash organized as 170K x 24-bit words, 4 DMA channels, 5 timers, CAN 2.0B communication, a Charge Time Measurement Unit (CTMU), and the Peripheral Trigger Generator (PTG) for autonomous task triggering.
The architecture provides superior ADC performance for the class, multiple PGECx/PGEDx ICSP debug channels, and 15 interrupt sources with low-power sleep and idle modes. The -E/ temperature grade (up to +125C) and AEC-Q100 qualification make it suitable for automotive and harsh-industrial environments.
Typical applications include brushless DC and PMSM motor control, switch-mode power supplies and digital lighting ballasts, automotive body modules, and industrial sensing front-ends leveraging the integrated op amps and comparators.
For design, note that this part has more than one pair of PGECx/PGEDx pins: use any pair for ICSP, but ICSPCLK and ICSPDAT must come from the same pair, and all VDD/VSS pins must be connected. The internal core regulator requires the specified VCAP capacitor.
This page adds distributor inventory insights, drop-in same-family alternatives, and practical design notes beyond the manufacturer datasheet.
Drop-in alternatives for DSPIC33EP512GP502-E/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 DSPIC33EP512GP502-E/SO (same form factor and footprint) — differing in Package, Analog Peripherals, Communication Interfaces, Core Architecture, Operating Temperature.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33EP512GP502-I/SO
✅ Drop-In✓ In Stock
$3.95 / Unit
View Datasheet →DSPIC33EP256GP502-I/SO
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$3.32 / Unit
View Datasheet →DSPIC33EP128GP502-I/SO
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP32GP502T-E/SO
✅ Drop-In✓ In Stock
$3.42 / Unit
View Datasheet →DSPIC33EP64GP502-I/SO
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP512GP502-E/SO Maximum Ratings & Electrical Characteristics
| Core Architecture | 16-bit DSC (DSP engine) |
| Max CPU Speed | 70 MIPS |
| Program Memory Size | 512 KB (170K x 24) Flash |
| RAM Size | 48 KB |
| Supply Voltage Range | 3.0 V to 3.6 V |
| Operating Temperature | -40C to +125C (E grade) |
| Package | 28-SOIC (0.295 in, 7.50 mm width) |
| Mounting Type | Surface Mount |
| DMA Channels | 4 |
| Timers | 5 |
| Communication Interfaces | CAN 2.0B, UART, SPI, I2C |
| PWM | Hi-Speed PWM |
| Analog Peripherals | Op Amps, Comparators, CTMU, ADC |
| Interrupt Sources | 15 |
| Qualification | AEC-Q100 (Automotive) |
| Series | dsPIC33EP (dsPIC33 33EP General Purpose) |
| Programming/Debug | ICSP via multiple PGECx/PGEDx pairs |
DSPIC33EP512GP502-E/SO Pin Configuration
| Pin 1 | MCLR — Master clear reset (active low), programming voltage input |
| Pin 2 | AN0/VREF+/CN2B/RB0 — Analog input 0 / positive voltage reference |
| Pin 3 | AN1/VREF-/CN3B/RB1 — Analog input 1 / negative voltage reference |
| Pin 4 | PGED1/AN2/C1IN-/RP0/RB2 — ICSP data channel 1 / analog input / comparator input / RP peripheral pin |
| Pin 5 | PGEC1/AN3/C1IN+/RP1/RB3 — ICSP clock channel 1 / analog input / comparator input / RP peripheral pin |
| Pin 6 | AN4/C1IN-/RP2/RB4 — Analog input 4 / comparator input / RP peripheral pin |
| Pin 7 | AN5/C1IN+/RP3/RB5 — Analog input 5 / comparator input / RP peripheral pin |
| Pin 8 | VSS — Ground reference |
| Pin 9 | OSC1/CLKI/CN30/RA2 — Crystal oscillator input / external clock input |
| Pin 10 | OSC2/CLKO/RC15 — Crystal oscillator output / clock output |
| Pin 11 | VDD — Positive supply (3.0 V to 3.6 V) |
| Pin 12 | PGED3/RP4/RB6 — ICSP data channel 3 / RP peripheral pin / port B |
| Pin 13 | PGEC3/RP5/RB7 — ICSP clock channel 3 / RP peripheral pin / port B |
| Pin 14 | VDD — Positive supply |
| Pin 15 | VCAP/VDDCORE — Core regulator capacitor connection - external capacitor required |
| Pin 16 | RP6/RB8 — Remappable peripheral pin / port B |
| Pin 17 | RP7/RB9 — Remappable peripheral pin / port B |
| Pin 18 | RP8/RB10 — Remappable peripheral pin / port B |
| Pin 19 | VSS — Ground reference |
| Pin 20 | VDD — Positive supply |
| Pin 21 | RP9/RB11 — Remappable peripheral pin / port B |
| Pin 22 | RP10/RB14 — Remappable peripheral pin / port B |
| Pin 23 | RP11/RB13 — Remappable peripheral pin / port B |
| Pin 24 | RP12/RB12 — Remappable peripheral pin / port B |
| Pin 25 | RP13/RB15 — Remappable peripheral pin / port B |
| Pin 26 | RP14/RB14 — Remappable peripheral pin / port B |
| Pin 27 | AVDD — Analog supply for ADC and analog peripherals |
| Pin 28 | AVSS — Analog ground |
Typical Applications
DSPIC33EP512GP502-E/SO is suitable for 6 applications: BLDC/PMSM Motor Control, Digital Power Conversion (SMPS/PFC), Automotive Body and Lighting Modules, Industrial Sensing and Signal Conditioning, Audio and Speech Processing Devices, IoT Edge Nodes and Smart Sensors.
BLDC/PMSM Motor Control
The DSPIC33EP512GP502-E/SO fits motor control because its Hi-Speed PWM module generates complementary outputs with hardware dead-time insertion, while the 70 MIPS DSP core executes field-oriented control (FOC) with single-cycle 17x17 multiply-accumulate operations. The on-chip op amps condition shunt-resistor current feedback and the comparators provide cycle-limited over-current trip without external amplifiers. In a typical sensorless FOC drive, the ADC samples phase currents at the PWM center, DMA transfers results to RAM, and the control loop closes at 20 kHz or higher with deterministic latency. The integrated CAN 2.0B interface links the drive to vehicle or industrial networks. At a 3.3 V supply the logic level is standard for gate-driver ICs such as the MCP802x family.
Recommended
Digital Power Conversion (SMPS/PFC)
Switch-mode power supplies and PFC stages demand deterministic, high-frequency control loops, which is exactly where the dsPIC33EP512GP502-E/SO excels. The Hi-Speed PWM provides phase-shifted and complementary outputs with nanosecond-resolution dead time, and the ADC with 4 DMA channels samples output voltage and inductor current synchronously with the PWM carrier, eliminating jitter-induced noise. The 70 MIPS core runs average-current-mode or voltage-mode compensation as digital PID or 3p3z filters with single-cycle MAC throughput. Integrated comparators implement hardware cycle-by-cycle current limiting that acts even if firmware stalls - a key safety property for digital power. The extended -40C to +125C temperature grade suits telecom rectifiers and automotive onboard chargers where ambient temperatures are high.
Recommended
Automotive Body and Lighting Modules
With AEC-Q100 qualification and -40C to +125C operation, the DSPIC33EP512GP502-E/SO targets automotive body electronics such as LED headlamp drivers, seat control, wiper modules, and HVAC actuators. The Hi-Speed PWM drives LED strings at dimming frequencies above audible noise thresholds, and the 10/12-bit ADC plus CTMU supports capacitive touch and linear potentiometer position sensing for user interfaces. LIN-style UART communication and CAN 2.0B cover both low-cost and mainstream in-vehicle networks. The 512 KB Flash accommodates OTA-updatable application images plus a bootloader with generous margin. The multiple PGECx/PGEDx pairs allow ICSP reprogramming of modules already installed in the vehicle harness through a single diagnostic connector.
Recommended
Industrial Sensing and Signal Conditioning
The integrated op amps, comparators, and CTMU make this DSC a compact analog front-end for industrial sensors such as pressure transmitters, ultrasonic flow meters, and thermistor-based temperature probes. The CTMU measures precise time charges for capacitive and ultrasonic time-of-flight applications, while the op amps amplify millivolt-level sensor signals before the ADC samples them. The 70 MIPS DSP engine applies IIR/FIR filtering and RMS computation in real time, and the 4 DMA channels stream results without CPU intervention. The 512 KB Flash holds calibration tables and multi-protocol fieldbus stacks (Modbus over UART, CANopen over CAN) simultaneously. Extended temperature rating supports panels mounted near motors and drives.
Recommended
Audio and Speech Processing Devices
The DSP engine of the DSPIC33EP512GP502-E/SO - a 17x17 multiplier with dual 40-bit accumulators and modulo and bit-reversed addressing - executes FIR, IIR, and FFT kernels efficiently for audio band processing such as active noise cancellation, acoustic echo cancellation, and speech compression in intercom and PA systems. The 70 MIPS core provides roughly 1000+ MACs per audio sample at 48 kHz sampling, leaving headroom for control tasks. The ADC captures microphone signals and the PWM module can reconstruct output through a class-D output stage with high-frequency carrier. The 48 KB RAM buffers multiple frames for latency-tolerant processing, and 512 KB Flash stores coefficient tables and multiple voice-prompt sets.
Recommended
IoT Edge Nodes and Smart Sensors
For industrial IoT edge nodes, the dsPIC33EP512GP502-E/SO combines sufficient compute for local signal analysis with low-power idle and sleep modes that extend battery life between radio transmissions. The CTMU enables capacitive touch user interfaces without external controllers, and the on-chip analog peripherals digitize local sensors directly, reducing BOM count. The Peripheral Trigger Generator (PTG) automates measurement sequences while the CPU sleeps, further reducing average current. The 512 KB Flash supports secure bootloaders and protocol stacks (SPI to Wi-Fi/BLE modules, UART to cellular modems), and CAN/SPI/I2C cover legacy field wiring. The wide -40C to +125C range suits outdoor enclosures and machine-mounted installations.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33EP512GP502-E/SO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33EP512GP502-I/SO | DSPIC33EP256GP502-I/SO | DSPIC33EP128GP502-I/SO | DSPIC33EP32GP502T-E/SO | DSPIC33EP64GP502-I/SO |
|---|---|---|---|---|---|---|
| Package | 28-SOIC (7.50 mm) | 28-SOIC (7.50 mm) - same | 28-SOIC (7.50 mm) - same | 28-SOIC (7.50 mm) - same | 28-SOIC (7.50 mm) - same | 28-SOIC (7.50 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Program Memory | 512 KB | 512 KB | 256 KB | 128 KB | 32 KB | 64 KB |
| RAM | 48 KB | 48 KB | 32 KB | 16 KB | 4 KB | 8 KB |
| Max CPU Speed | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS |
| Operating Temperature | -40C to +125C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +125C | -40C to +85C |
| Relative Cost | Highest in family (largest Flash) | Lower (industrial grade) | Lower | Lowest among GP50x 28-pin | Lowest overall | Low |
Key Differentiators
- Extended temperature range with automotive qualification (vs DSPIC33EP512GP502-I/SO)
- Maximum Flash and RAM in the 28-pin GP50x family (vs DSPIC33EP256GP502-I/SO)
- Cost-optimized option for small firmware at the same footprint (vs DSPIC33EP32GP502T-E/SO)
Design Notes
The dsPIC33EP512GP502 integrates an on-chip core regulator that requires an external low-ESR capacitor on the VCAP/VDDCORE pin (pin 15 on the 28-SOIC). Use the exact capacitance and ESR range specified in the family datasheet DS70000657J - too little capacitance or excessive ESR destabilizes the core rail during 70 MIPS execution bursts. Decouple each VDD pin (11, 14, 20) with 0.1 uF ceramics placed within 2 mm of the pin, plus one bulk 4.7 uF to 10 uF capacitor. Connect AVDD (pin 27) through an RC or ferrite filter from VDD to keep switching noise out of the ADC.
The dsPIC33EP512GP502 provides multiple PGECx/PGEDx pairs for ICSP programming, but ICSPCLK and ICSPDAT must come from the SAME pair - for example, PGEC1 (pin 5) with PGED1 (pin 4). Mixing pairs prevents the programmer from entering programming mode. Route your chosen pair to the programming header and configure CONFIG4 (ICSPx) in MPLAB X to match. Do not place heavy loads on the unused PGED/PGEC pins; leave them as inputs or assign them to port functions only after verifying debug operation.
For motor control and digital power layouts, keep the PWM outputs (remappable to RPx pins) on one board edge routed as short, matched pairs to gate drivers, and separate the analog ground domain (AVSS pin 28, decoupled analog components) from the power-switching ground with a single-point star connection under the IC. The SOIC 7.50 mm body provides 1.27 mm pitch, allowing easy probing during bring-up; add 0-ohm jumper footprints in the analog supply filter so the filter can be tuned after ADC noise evaluation.
Estimated: at 70 MIPS with all peripherals active, core current is typically in the tens of mA range on 3.3 V, giving power dissipation well under 0.5 W - within the 28-SOIC capability (~1 W at 25C ambient with theta_JA in the 80-100 C/W range per the family datasheet). No heatsink is required; however, in +125C ambient automotive environments, verify junction temperature margin with your actual measured supply current, and prefer 2-oz copper ground pours under the package to reduce die temperature.
Compliance Information
Automotive AEC-Q100 qualification confirmed by Hotenda, Xecor, and LoveChip product listings. RoHS/REACH/lead-free status not stated in retrieved data - verify on Microchip's product page environmental section.
