DSPIC33EP512GP502-I/SO - 16-Bit 70 MIPS DSC, 512KB Flash | Microchip
MPN: DSPIC33EP512GP502-I/SO ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $5.62 | $5.62 |
| 10 | $5.2 | $52.00 |
| 100 | $4.75 | $475.00 |
| 500 | $4.35 | $2,175.00 |
| 1,000 | $3.95 | $3,950.00 |
DSPIC33EP512GP502-I/SO Overview
A Digital Signal Controller combines the peripheral set and ease of use of a microcontroller with the mathematical throughput of a DSP engine in a single core. In the power-management hierarchy, the dsPIC33EP family sits between general-purpose MCUs (such as the PIC24) and dedicated DSPs, making it the default choice for embedded digital power conversion, motor control, and sensor-signal-chain products that need both control code and real-time math on one chip.
Key features include the 70 MIPS dsPIC33E core with DSP instruction support and code-density improvements over the dsPIC33F generation, high-speed PWM outputs suited to digital power supplies, integrated analog peripherals (ADC, comparators, op amps, and CTMU charge-time measurement), and the Peripheral Trigger Generator (PTG) for autonomous peripheral sequencing. Communications cover CAN, UART, SPI, and I2C for industrial networking.
The device provides 4 DMA channels, 5 timers, and 15 interrupt sources per distributor documentation, with a CMOS process and low-power modes for battery-conscious designs. Flash self-programming supports field firmware updates, and the wide operating voltage range suits industrial supply rails.
Typical applications include digital power supplies and power-factor-correction converters, brushless DC and PMSM motor drives, and industrial control panels where CAN connectivity plus fast ADC sampling and PWM generation are required on a compact 28-pin footprint.
A key design consideration is clock configuration: the 70 MIPS performance requires correct PLL configuration (FOSC/2 instruction rate); designs must also budget the two oscillator pins consumed when an external crystal is used.
This page synthesizes distributor pricing, drop-in same-footprint alternatives, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for DSPIC33EP512GP502-I/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-I/SO (same form factor and footprint) — differing in Package, Operating Temperature, Series, Core Architecture, Core Processor.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
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)
DSPIC33EP64GP502-I/SO
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP32GP502T-E/SO
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$3.42 / Unit
View Datasheet →DSPIC33EP32MC202-I/SO
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$3.46 / Unit
View Datasheet →DSPIC33EP512GP502-I/SO Maximum Ratings & Electrical Characteristics
| Core Architecture | 16-bit dsPIC33E DSC |
| Maximum CPU Speed | 70 MIPS |
| Maximum Clock Frequency | 60 MHz (per Microchip USA listing) |
| Flash Program Memory | 512 KB (170K x 24) |
| RAM | 48 KB |
| DMA Channels | 4 |
| Timers | 5 |
| Interrupt Sources | 15 |
| Package | 28-SOIC (0.295 in / 7.50 mm width) |
| Mounting Type | Surface Mount |
| Process Technology | CMOS |
| Temperature Grade | -40C to +85C (Industrial, -I suffix) |
| Analog Peripherals | ADC, op amps, comparators, CTMU |
| Digital Peripherals | Hi-Speed PWM, PTG |
| Communication Interfaces | CAN, UART, SPI, I2C |
| Lifecycle Status | In Production |
DSPIC33EP512GP502-I/SO Pin Configuration
| Pin 1 | MCLR — Master Clear reset input with power-up timer |
| Pin 2 | AN0/VREF+/RB0 — Analog input 0 / positive voltage reference / Port B |
| Pin 3 | AN1/VREF-/RB1 — Analog input 1 / negative voltage reference / Port B |
| Pin 4 | AN2/PGD/RB2 — Analog input 2 / ICSP programming data / Port B |
| Pin 5 | AN3/PGC/RB3 — Analog input 3 / ICSP programming clock / Port B |
| Pin 6 | AN4/RB4 — Analog input 4 / Port B |
| Pin 7 | AN5/RB5 — Analog input 5 / Port B |
| Pin 8 | VSS — Ground reference |
| Pin 9 | OSC1/CLKI — Oscillator input / external clock input |
| Pin 10 | OSC2/CLKO/RC15 — Oscillator output / clock output / Port C |
| Pin 11 | VDD — Positive supply |
| Pin 12 | RB6 — Port B digital I/O (remappable peripheral capable) |
| Pin 13 | RB7 — Port B digital I/O (remappable peripheral capable) |
| Pin 14 | RB8 — Port B digital I/O (remappable peripheral capable) |
| Pin 15 | RB9 — Port B digital I/O (remappable peripheral capable) |
| Pin 16 | RB10 — Port B digital I/O (remappable peripheral capable) |
| Pin 17 | RB11 — Port B digital I/O (remappable peripheral capable) |
| Pin 18 | RC0 — Port C digital I/O (remappable peripheral capable) |
| Pin 19 | RC1 — Port C digital I/O (remappable peripheral capable) |
| Pin 20 | RC2 — Port C digital I/O (remappable peripheral capable) |
| Pin 21 | RC3 — Port C digital I/O (remappable peripheral capable) |
| Pin 22 | RC4 — Port C digital I/O (remappable peripheral capable) |
| Pin 23 | RC5 — Port C digital I/O (remappable peripheral capable) |
| Pin 24 | RC6 — Port C digital I/O (remappable peripheral capable) |
| Pin 25 | RC7 — Port C digital I/O (remappable peripheral capable) |
| Pin 26 | VSS — Ground reference |
| Pin 27 | AVDD — Analog positive supply |
| Pin 28 | VDD — Positive supply |
Typical Applications
DSPIC33EP512GP502-I/SO is suitable for 6 applications: Digital Power Supplies and PFC, Brushless DC and PMSM Motor Drives, Industrial Control with CAN Networking, Analog Sensor Signal Processing, Portable and Battery-Powered Instruments, Embedded Lighting and Power Conversion Control.
Digital Power Supplies and PFC
The DSPIC33EP512GP502-I/SO fits digital power conversion because its 70 MIPS DSP core closes voltage and current loops fast enough for switching frequencies in the hundreds of kHz, while the high-speed PWM module provides fine duty-cycle resolution and complementary outputs with dead-time control. On-chip op amps condition shunt-current signals without external amplifiers, and comparators enable cycle-by-cycle overcurrent protection with sub-microsecond response. Placed as the controller on an AC-DC or DC-DC converter board, the 4 DMA channels keep ADC sampling deterministic under interrupt load. The trade-off versus a dedicated digital-power IC is firmware development effort, offset by full algorithm flexibility and a 512 KB Flash budget for adaptive control plus field-updatable firmware over UART or CAN.
Recommended
Brushless DC and PMSM Motor Drives
For sensorless BLDC and PMSM control, the DSPIC33EP512GP502-I/SO pairs its 70 MIPS DSP engine (MAC and multiply instructions for field-oriented-control math) with high-speed PWM, integrated op amps for phase-current sensing, and comparators for hardware overcurrent trips. The fast ADC samples back-EMF or current-shunt signals synchronously with PWM via the Peripheral Trigger Generator, removing software jitter from the sampling instant. On a compact 28-SOIC footprint, the device handles the complete control loop plus UART or CAN communication to a host. Memory headroom of 512 KB allows sensorless FOC, startup state machines, and field-update bootloaders to coexist. Designs needing only trapezoidal six-step control can use the smaller-footprint-print DSPIC33EP32MC202-I/SO as a drop-in cost reduction.
Recommended
Industrial Control with CAN Networking
In industrial nodes such as pump controllers, HVAC boards, and sensor concentrators, the DSPIC33EP512GP502-I/SO provides an integrated CAN 2.0B controller alongside UART, SPI, and I2C, eliminating an external CAN transceiver-controller chip. The 70 MIPS core services protocol stacks and application logic concurrently, while 4 DMA channels offload serial data movement. The industrial -40C to +85C temperature grade of the -I suffix matches factory-floor ambient requirements, and the 28-SOIC 7.50 mm package suits both hand assembly and automated SMT lines. On-chip CTMU supports capacitive touch buttons for panel interfaces. The 512 KB Flash accommodates future protocol additions without a hardware spin, a common decision factor versus 32 KB-footprint siblings in long-lived industrial products.
Recommended
Analog Sensor Signal Processing
The DSPIC33EP512GP502-I/SO serves front-end signal chains by combining its on-chip ADC with op amps, comparators, and the CTMU charge-time measurement unit, allowing sensor signals such as pressure bridges, thermistors, and capacitive elements to be conditioned and digitized without external analog ICs. The 70 MIPS DSP instruction set runs filtering (IIR/FIR), FFT, and calibration math in real time, while 48 KB of RAM buffers sample blocks for analysis or logging. The Peripheral Trigger Generator sequences ADC conversions from PWM or timer events for coherent sampling. In a 28-SOIC footprint the device replaces MCU-plus-op-amp-plus-ADC multi-chip designs, cutting BOM cost and board area, with the trade-off that precision specifications are good-not-instrumentation-grade for the most demanding metrology.
Recommended
Portable and Battery-Powered Instruments
Handheld meters, testers, and battery analyzers benefit from the DSPIC33EP512GP502-I/SO's low-power modes, which let the 70 MIPS core idle between measurements and wake on interrupt, extending battery life. The CTMU enables capacitive touch and precise time-charge measurements for test functions, while the ADC and op amps read battery voltage and current directly. A single 3.3V-supply CMOS device operating from -40C to +85C simplifies power design, and the 28-SOIC 7.50 mm body fits compact two-layer instrument boards. The 512 KB Flash supports rich UI firmware, multi-protocol communication, and datalogging buffers within the 48 KB RAM. Field firmware updates over UART protect against obsolescence in products with long service lives, an advantage over fixed-function analog meter ICs.
Recommended
Embedded Lighting and Power Conversion Control
Advanced LED drivers, HID ballasts, and small inverters use the DSPIC33EP512GP502-I/SO because its high-speed PWM delivers the fine resolution and phase-shifted outputs needed for dimming and resonant conversion topologies, while integrated comparators provide fast fault shutdown independent of CPU latency. The 70 MIPS DSP core runs power-conversion compensation loops and communication (UART, SPI, I2C, CAN) for digital lighting networks on one chip. The 28-SOIC package withstands the moderate temperatures of lighting enclosures within its -40C to +85C grade, and the 4 DMA channels maintain ADC synchronization for ripple and current regulation. Compared with fixed-function lighting controllers, this DSC offers programmable dimming curves, protocol adaptability, and remote firmware updates in the same 512 KB Flash footprint.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33EP512GP502-I/SO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33EP256GP502-I/SO | DSPIC33EP128GP502-I/SO | DSPIC33EP64GP502-I/SO | DSPIC33EP32GP502T-E/SO | DSPIC33EP32MC202-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 |
| CPU Speed | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS |
| Flash Memory | 512 KB (170K x 24) | 256 KB | 128 KB | 64 KB | 32 KB | 32 KB |
| Temperature Range | -40C to +85C (Industrial) | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +125C (Extended) | -40C to +85C |
| Peripheral Family Variant | GP (general purpose, op amps + CTMU) | GP | GP | GP | GP | MC (motor control analog set) |
| Lifecycle Status | In Production (Active) | In Production | In Production | In Production | In Production | In Production |
Key Differentiators
- Largest Flash in the 28-SOIC dsPIC33EP GP family (vs DSPIC33EP256GP502-I/SO)
- General-purpose analog set including op amps and CTMU (vs DSPIC33EP32MC202-I/SO)
- Honest trade-off: industrial-only temperature grade (vs DSPIC33EP32GP502T-E/SO)
Design Notes
Decouple both VDD pins (11 and 28) and AVDD (pin 27) individually with 0.1 uF ceramic capacitors placed within 3 mm of each pin, plus one bulk 4.7-10 uF capacitor near the device. AVDD should be filtered from the digital rail (ferrite bead or RC) to preserve ADC accuracy; Microchip's analog performance specifications assume a clean AVDD. Tie all VSS pins (8, 26) to a solid ground plane - do not daisy-chain grounds through the analog section, as return-current coupling degrades converter results in PWM-heavy applications.
Use the ICSP pins (MCLR pin 1, PGD on pin 4, PGC on pin 5) with a standard 5-pin programming header routed away from PWM and switching nodes; series 100-ohm resistors on PGD/PGC isolate programmer loading in-circuit. Keep the crystal loop (OSC1/OSC2, pins 9-10) compact with guard grounding per Microchip's oscillator layout guidance. Because Peripheral Pin Select lets UART/PWM appear on many pins, finalize RPn mapping early in layout so serial and analog functions avoid crossing the analog half of the footprint.
Three frequent mistakes: (1) Confusing the 60 MHz FOSC figure with the 70 MIPS instruction rate - the core runs at FOSC/2, so verify PLL settings in the configuration bits before benchmarking. (2) Leaving MCLR floating; use the internal pull-up or an external 10k resistor plus a small capacitor for robust power-on reset. (3) Migrating firmware from dsPIC33F without reviewing changed peripheral register maps - the E-generation PPS, ADC, and PWM registers differ substantially from the F generation. Always recompile against the dsPIC33EP device support files rather than reusing F-family linker scripts.
Compliance Information
Compliance data was not explicitly stated in the retrieved web data. As a current-production Microchip SMD device, RoHS/lead-free compliance is typical but must be confirmed via the Microchip product page compliance portal. The -I suffix denotes industrial temperature grade, not a compliance marking.
