DSPIC33EP64GP502-I/MM - 16-Bit 70 MIPS DSC QFN-28 | Microchip
MPN: DSPIC33EP64GP502-I/MM ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.99 | $2.99 |
| 10 | $2.8 | $28.00 |
| 100 | $2.55 | $255.00 |
| 500 | $2.35 | $1,175.00 |
| 1,000 | $2.2 | $2,200.00 |
DSPIC33EP64GP502-I/MM Overview
A digital signal controller combines the compute architecture of a digital signal processor (DSP engine, hardware multiply-accumulate, DSP instruction set) with the peripheral integration of a microcontroller (MCU). In the system hierarchy, this part sits between general-purpose MCUs and dedicated DSPs: it is a 16-bit embedded processor optimized for control loops that also need math-intensive signal processing, such as motor control, digital power conversion, and sensor conditioning.
Key features include the high-speed 70 MIPS core with DSP and fixed-point instructions, high-speed PWM peripherals suited for power conversion, multiple UART/SPI/I2C serial interfaces, and general-purpose timers. The dsPIC33EP GP family also integrates advanced analog and, on this die, on-chip peripheral facilities such as the Peripheral Trigger Generator family features. The QFN-28-EP exposed-pad package improves thermal performance and grounding in compact boards.
Technically, the device executes from Flash with 24-bit instruction words, offers interrupt-prioritized deterministic response for control loops, and supports In-Circuit Serial Programming (ICSP) via PGECx/PGEDx pin pairs plus In-Circuit Emulation debugging. Clock options include an internal fast RC oscillator and external crystal/PLL configurations reaching 70 MIPS core operation from a 3.0-3.6 V rail.
Typical applications include brushless DC (BLDC) and permanent-magnet motor control, switch-mode power supplies and digital lighting, industrial automation nodes, and DSP-enhanced sensing such as audio processing and metering.
A key design consideration is power integrity: the VCAP/VDDCORE pin requires the datasheet-specified external capacitor for the internal regulator, and all VDD/VSS pairs plus the exposed pad must be connected for reliable operation.
This page synthesizes distributor pricing (from $2.99 as of 2026-09-25 at LCSC), pin-compatible dsPIC33EP alternatives, and practical design notes not found on the standard product page.
Drop-in alternatives for DSPIC33EP64GP502-I/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 DSPIC33EP64GP502-I/MM (same form factor and footprint) — differing in Operating Temperature, Package, Communication Interfaces, Core, ADC.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33EP32GP502T-E/MM
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$2.98 / Unit
View Datasheet →DSPIC33EP64GP502-H/MM
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33EP64GP502-E/MM
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33EP32GP502-I/MM
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP16GP502-I/MM
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP64MC502-I/MM
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
Contact for price
View Datasheet →DSPIC33EP32MC502-I/MM
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP64GP502-I/MM Maximum Ratings & Electrical Characteristics
| Core | dsPIC33E 16-bit DSC core |
| Core Performance | 70 MIPS (max) |
| Program Memory | 64 KB (22K x 24) Flash |
| Program Memory Type | Flash |
| Supply Voltage | 3 V to 3.6 V |
| Operating Temperature | -40C to +85C |
| Package | QFN-28-EP (6x6 mm) |
| Mounting Type | Surface Mount |
| Peripherals | High-Speed PWM, advanced analog, timers |
| Communication Interfaces | UART, SPI, I2C |
| Programming / Debug | ICSP via PGECx/PGEDx pairs |
| Clock Sources | Internal FRC oscillator, external crystal/PLL |
| Extended Temperature Option | 125C variant available (-E/MM) |
| Lifecycle Status | In Production |
| RoHS Status | Compliant (per LCSC listing) |
DSPIC33EP64GP502-I/MM Pin Configuration
| Pin 1 | MCLR — Master clear reset input / programming voltage |
| Pin 2 | AN0/RB0 — Analog input 0 / port B bit 0 |
| Pin 3 | AN1/RB1 — Analog input 1 / port B bit 1 |
| Pin 4 | AN2/PGED/RB2 — Analog input 2 / ICSP data / port B bit 2 |
| Pin 5 | AN3/PGEC/RB3 — Analog input 3 / ICSP clock / port B bit 3 |
| Pin 6 | AN4/RB4 — Analog input 4 / port B bit 4 |
| Pin 7 | AN5/RB5 — Analog input 5 / port B bit 5 |
| Pin 8 | VSS — Ground reference |
| Pin 9 | OSC1/CLKI — External crystal input / clock input |
| Pin 10 | OSC2/CLKO/RC15 — Crystal output / clock output |
| Pin 11 | VDD — Positive supply, 3 V to 3.6 V |
| Pin 12 | RB6/PGEC2 — Port B bit 6 / ICSP clock pair 2 |
| Pin 13 | RB7/PGED2 — Port B bit 7 / ICSP data pair 2 |
| Pin 14 | VCAP/VDDCORE — Internal core regulator capacitor connection |
| Pin 15 | RB8 — Port B bit 8 / remappable peripheral pin |
| Pin 16 | RB9 — Port B bit 9 / remappable peripheral pin |
| Pin 17 | VSS — Ground reference |
| Pin 18 | RB10 — Port B bit 10 / remappable peripheral pin |
| Pin 19 | RB11 — Port B bit 11 / remappable peripheral pin |
| Pin 20 | RB12 — Port B bit 12 / analog-capable, remappable |
| Pin 21 | RB13 — Port B bit 13 / analog-capable, remappable |
| Pin 22 | RB14 — Port B bit 14 / remappable peripheral pin |
| Pin 23 | RB15 — Port B bit 15 / remappable peripheral pin |
| Pin 24 | VDD — Positive supply, 3 V to 3.6 V |
| Pin 25 | RC12 — Port C bit 12 / remappable peripheral pin |
| Pin 26 | SOSCI/RC13 — Secondary oscillator input / port C bit 13 |
| Pin 27 | SOSCO/T1CK/RC14 — Secondary oscillator output / Timer1 clock / port C bit 14 |
| Pin 28 | VSS/EP — Ground reference / exposed pad - connect to VSS |
Typical Applications
DSPIC33EP64GP502-I/MM is suitable for 6 applications: Digital Motor Control (BLDC / PMSM), Digital Power Conversion / SMPS, Industrial Automation Nodes, Sensor Signal Conditioning, Digital Lighting / LED Drivers, Portable / Battery-Powered Instrumentation.
Digital Motor Control (BLDC / PMSM)
The dsPIC33EP64GP502-I/MM fits three-phase motor control because its 70 MIPS core with hardware DSP multiply-accumulate executes field-oriented control (FOC) inner current loops well within typical 10-20 kHz PWM periods. The high-speed PWM module generates complementary or independent outputs with dead-time insertion for three-phase inverter bridges. In practice, the controller runs ADC-sampled phase currents, executes PI/dq transform calculations in the DSP engine, and updates PWM duty cycles each cycle, yielding efficient, low-torque-ripple operation for brushless DC and permanent-magnet machines. The 64 KB Flash accommodates complete FOC plus communication stacks; the pin-compatible MC502 variant offers a more motor-centric peripheral mix if the design later needs specialized features.
Recommended
Digital Power Conversion / SMPS
Switch-mode power supplies benefit directly from this DSC's high-speed PWM and 70 MIPS loop bandwidth. The DSPIC33EP64GP502-I/MM can implement voltage-mode or average-current-mode control for buck, boost, LLC, and PFC stages, with PWM updates synchronized to ADC conversions of output voltage and inductor current. Because the control loop is digital, compensation can adapt to load conditions, and features like phase shedding, burst mode, and fault counters become firmware rather than analog circuitry. The 3.0-3.6 V core rail integrates easily with an auxiliary bias supply, and the exposed-pad QFN-28 provides solid grounding for precision analog feedback. At 64 KB Flash, full control firmware plus Modbus or CAN-style supervisory links fit comfortably.
Recommended
Industrial Automation Nodes
In factory automation, the DSPIC33EP64GP502-I/MM serves as an intelligent node handling sensor acquisition, local closed-loop control, and serial communication. Its 16-bit core with DSP instructions processes sensor filtering (FIR/IIR) natively, while UART, SPI, and I2C interfaces connect to displays, EEPROMs, sensors, and gateways. The 64 KB Flash supports protocol stacks andOTA-style update tables without external memory. The industrial -40C to +85C rating and RoHS-compliant active lifecycle status make it safe for long-term BOM commitment in control cabinets, motor drivers, and distributed I/O. For designs heading into harsher enclosures, the same footprint -E/MM variant extends the rating to +125C without board changes, providing a qualification path within the same PCB.
Recommended
Sensor Signal Conditioning
The DSPIC33EP64GP502-I/MM fits signal-conditioning front ends because the 70 MIPS DSP engine applies digital filtering, RMS computation, and calibration math to raw ADC data, while the dsPIC33EP family's advanced analog facilities reduce external component count. Typical circuits acquire strain-gauge, pressure, or current-sensor signals, apply oversampling and digital filtering in firmware, and stream processed values over SPI/I2C to a host. Compared with an analog filter chain, digital conditioning in the DSC eliminates tolerance drift and enables field-updatable calibration constants in Flash. The 6x6 mm QFN-28 footprint suits compact transducer housings, and 64 KB Flash leaves room for multi-sensor fusion, linearization tables, and communications firmware on a single chip.
Recommended
Digital Lighting / LED Drivers
Digitally controlled LED drivers use the DSPIC33EP64GP502-I/MM for constant-current regulation, dimming, and fault management. The high-speed PWM module produces both the power-conversion switching waveform and a separate dimming PWM channel with independent resolution, supporting 0-10 V, DALI-style, or PWM dimming interfaces via UART/I2C connectivity. The 70 MIPS core closes the current-regulation loop faster than the converter's audible range, avoiding flicker, while firmware monitors input voltage, output current, and temperature for protection features (derating, shutdown, retry). The 64 KB Flash supports complete driver firmware plus a small communication stack. The -40C to +85C industrial rating matches luminaire driver enclosures where ambient temperatures regularly exceed 70C.
Recommended
Portable / Battery-Powered Instrumentation
Handheld meters and portable instruments gain DSP-grade processing in a compact, low-power-friendly footprint from this DSC. The single 3.0-3.6 V rail matches a 3.3 V LDO or Li-ion system rail, and the internal fast RC oscillator permits crystal-free startup for cost- and space-sensitive designs, with a crystal option when measurement timing precision is required. The DSP engine performs FFT or RMS analysis for metering and diagnostics locally, and the 64 KB Flash retains logging tables and GUI update code. The 6x6 mm QFN-28-EP keeps the PCB area small enough for handheld enclosures. For instruments deployed in cold storage or outdoor environments, the pin-compatible -E/MM grade extends operation to +125C for harsh-condition variants.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33EP64GP502-I/MM — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33EP32GP502T-E/MM | DSPIC33EP64GP502-H/MM | DSPIC33EP64GP502-E/MM | DSPIC33EP64MC502-I/MM |
|---|---|---|---|---|---|
| Package | QFN-28-EP (6x6 mm) | QFN-28-EP (6x6 mm) - same | QFN-28-EP (6x6 mm) - same | QFN-28-EP (6x6 mm) - same | QFN-28-EP (6x6 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core / Performance | dsPIC33E 16-bit, 70 MIPS | dsPIC33E 16-bit, 70 MIPS | dsPIC33E 16-bit, 70 MIPS | dsPIC33E 16-bit, 70 MIPS | dsPIC33E 16-bit, 70 MIPS |
| Flash Program Memory | 64 KB (22K x 24) | 32 KB (-50%) | 64 KB | 64 KB | 64 KB |
| Operating Temperature | -40C to +85C (industrial) | -40C to +125C (extended) | automotive range (AEC-Q100) | -40C to +125C (extended) | -40C to +85C (industrial) |
| Qualification Grade | Standard industrial | Standard extended temp | AEC-Q100 / TS 16949 | Standard extended temp | Standard industrial |
| Peripheral Emphasis | General purpose (GP) | General purpose (GP) | General purpose (GP) | General purpose (GP) | Motor control (MC) |
Key Differentiators
- Full 64 KB Flash in a 6x6 mm QFN-28 footprint (vs DSPIC33EP32GP502T-E/MM)
- Industrial-grade cost efficiency (vs DSPIC33EP64GP502-H/MM)
- General-purpose peripheral balance (vs DSPIC33EP64MC502-I/MM)
Design Notes
The VCAP/VDDCORE pin (pin 14) connects to the internal core regulator and REQUIRES the datasheet-specified low-ESR ceramic capacitor to ground - typically on the order of 10 uF plus a smaller bypass; verify the exact value in the family datasheet. Omitting it or using a wrong ESR causes brown-out resets and erratic behavior. Additionally, connect every VDD pin (11, 24) to the 3.0-3.6 V rail with a 0.1 uF bypass per pin pair, and add bulk capacitance near the device for PWM switching transients.
The QFN-28-EP exposed pad must be soldered to a grounded copper pour with an array of thermal vias - it is a primary ground return and thermal path, and floating it degrades both signal integrity and ADC accuracy. Keep the analog inputs (AN0-AN5) routed away from PWM switch nodes, and place the crystal (OSC1/OSC2) within a few millimeters of pins 9-10 with short guard ring traces. Use a solid ground plane and partition analog return paths from PWM power loops.
ICSP programming requires matched PGECx/PGEDx pairs: if PGEC2 (pin 12) carries ICSPCLK, ICSPDAT must use PGED2 (pin 13). Mixing pairs from different numbers is a frequent bring-up failure. Also, ensure MCLR (pin 1) has the recommended pull-up resistor (typically 10k) and a series resistor (~100-470 ohm) if the programmer applies programming voltage. Reserve the programming pair as header access on the production board to preserve field reprogrammability.
Estimated: for QFN-28 packages of this size (6x6 mm), typical theta_JA on a standard 4-layer JEDEC board is roughly 30-40 C/W, so a full 70 MIPS core running peripherals usually stays well within the ~125-150 C junction limits at 85 C ambient if the exposed pad is properly soldered. Compute actual dissipation from VDD x ICC at your clock configuration per the datasheet current-consumption tables, and increase ground copper if ambient exceeds 70 C - or move to the -E/MM extended grade.
Compliance Information
RoHS compliant per LCSC listing (C639670) as of 2026-09-25. Not AEC-Q100 qualified; use DSPIC33EP64GP502-H/MM (AEC-Q100 / TS 16949 per Microchip USA) for automotive. REACH, halogen-free, and conflict-minerals status not stated in provided data.
