DSPIC33EP32GP504-I/ML - 16-bit DSC 70 MIPS 32KB Flash | Microchip
MPN: DSPIC33EP32GP504-I/ML ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.62 | $4.62 |
| 10 | $4.16 | $41.60 |
| 100 | $3.72 | $372.00 |
| 500 | $3.38 | $1,690.00 |
| 1,000 | $3.05 | $3,050.00 |
DSPIC33EP32GP504-I/ML Overview
A Digital Signal Controller combines the compute architecture of a microcontroller with DSP-centric features such as hardware multiply-accumulate, divide, and modulo addressing. In the power-management hierarchy of embedded systems, a DSC sits between general-purpose MCUs and dedicated DSPs, making it the preferred choice when a single chip must run both real-time control loops (PI/PID at high sampling rates) and general firmware tasks. The dsPIC33EP family is Microchip's second-generation 16-bit DSC platform built on the PIC24 core.
Key features include up to 70 MIPS execution from an on-chip PLL, a high-speed PWM module suited to power conversion, integrated op amps and advanced analog peripherals, and industrial temperature operation from -40C to +85C denoted by the -I suffix. The 44-QFN 8x8 mm body offers a compact, thermally efficient surface-mount footprint for dense power-electronics boards.
Architecturally, the device uses a modified Harvard 16-bit core with 24-bit instructions, DSP engine with 40-bit accumulators, and deterministic interrupt latency - valuable for fixed-frequency current-loop control in digital power supplies and motor drives.
Typical applications include switch-mode power supplies (SMPS), PFC stages, BLDC/PMSM motor control, digital lighting (LED ballast), and general embedded control needing math-heavy signal processing.
Design consideration: plan the MPLAB X debug/programming connection (e.g., MPLAB Snap or ICD 3) on ICSP pins during layout, since in-circuit access simplifies firmware iteration and field updates.
This page synthesizes distributor pricing, drop-in same-family alternatives, pinout guidance, and practical design notes not found in a single manufacturer datasheet.
Drop-in alternatives for DSPIC33EP32GP504-I/ML — 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 DSPIC33EP32GP504-I/ML (same form factor and footprint) — differing in Package, Operating Temperature, Core, RAM, Timers.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33EP32GP504-E/ML
✅ Drop-In✓ In Stock
$1.95 / Unit
View Datasheet →DSPIC33EP64GP504-I/ML
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$3.44 / Unit
View Datasheet →DSPIC33EP128GP504-I/ML
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
Contact for price
View Datasheet →DSPIC33EP256GP504-I/ML
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP32MC504-I/ML
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$2.65 / Unit
View Datasheet →DSPIC33EP32GP504-I/ML Maximum Ratings & Electrical Characteristics
| Core | 16-bit dsPIC33EP (modified Harvard) |
| Max Speed | 70 MIPS |
| Flash Memory | 32 KB (10.7K x 24 instructions) |
| SRAM | 4 KB |
| Package | 44-QFN (8x8 mm) |
| Operating Temperature | -40C to +85C (Industrial, -I suffix) |
| Product Type | Digital Signal Controller (DSC) |
| Peripherals | High-Speed PWM, Op Amps, Advanced Analog |
| Mounting Type | Surface Mount |
| Programming / Debug | ICSP via MPLAB Snap / ICD 3 / REAL ICE with MPLAB X IDE |
| Lifecycle Status | In Production (per Microchip product page) |
DSPIC33EP32GP504-I/ML 44-qfn (8x8 mm) Pin Configuration Guide
Pin configuration for DSPIC33EP32GP504-I/ML (44-qfn (8x8 mm) package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for DSPIC33EP32GP504-I/ML.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33EP32GP504-I/ML is suitable for 6 applications: Switch-Mode Power Supply (SMPS) Control, BLDC / PMSM Motor Control, Digital LED Lighting and Electronic Ballast, Industrial Sensor and Process Control, Audio Signal Processing and DSP Functions, Embedded Control with Data Logging and Connectivity.
Switch-Mode Power Supply (SMPS) Control
The DSPIC33EP32GP504-I/ML fits SMPS control because its high-speed PWM module provides fine edge-resolution outputs for buck, boost, PFC, and LLC topologies, while the integrated op amps condition current- and voltage-sense signals without external amplifiers. In a typical implementation the ADC samples the inductor current and output voltage each switching cycle, and the 70 MIPS core executes a PI control loop with the DSP engine's 40-bit accumulators for deterministic cycle-by-cycle regulation. This removes analog compensation components and allows firmware-based soft-start, mode switching, and fault handling. The trade-off versus dedicated analog controllers is firmware complexity, but the payoff is a single controller that adapts to multiple power stages via software.
Recommended
BLDC / PMSM Motor Control
For brushless DC and permanent-magnet synchronous motor drives, the DSPIC33EP32GP504-I/ML provides complementary or independent PWM outputs driving a three-phase inverter, with the onboard op amps amplifying shunt-based phase-current measurements. The 70 MIPS core supports field-oriented control (FOC) math including Clark/Park transforms and PI current loops, running at multi-kHz carrier frequencies with deterministic latency. Integrated comparators can provide hardware overcurrent shutdown independent of software for protection. The 44-QFN 8x8 mm package keeps the controller footprint small on dense inverter PCBs. Engineers should verify the MC504 peripheral variant if they need the most motor-specific PWM feature set, though the GP504 handles standard FOC and trapezoidal control well.
Recommended
Digital LED Lighting and Electronic Ballast
The DSPIC33EP32GP504-I/ML suits digital lighting applications such as dimmable LED drivers and HID electronic ballasts, where the high-speed PWM generates phase-shifted or frequency-modulated drive signals and the ADC plus op amp chain closes the current-feedback loop. Running control firmware at up to 70 MIPS enables smooth PWM dimming to deep levels without visible flicker, and the same firmware can implement DALI/DMX-style communication over UART. The -40C to +85C industrial temperature grade covers enclosed luminaire environments where driver electronics see elevated ambient temperatures. Compared with analog dimming ICs, firmware control adds adaptive compensation for LED forward-voltage drift over temperature and lifetime.
Recommended
Industrial Sensor and Process Control
In industrial automation nodes, the DSPIC33EP32GP504-I/ML processes sensor signals with its advanced analog front end while UART, SPI, and I2C interfaces communicate with field buses and HMI devices. The DSP engine accelerates digital filtering (IIR/FIR) and RMS/FFT calculations on acquired data, useful for vibration, load-cell, and power-metering applications. The -I industrial temperature rating and robust 16-bit core suit long-lifetime factory deployments. Estimated: filtering a 10 kHz sampled channel with a 64-tap FIR consumes only a fraction of the 70 MIPS budget, leaving ample headroom for protocol handling. The compact 44-QFN package also enables sensor-side embedding close to the measurement point.
Recommended
Audio Signal Processing and DSP Functions
The DSPIC33EP32GP504-I/ML can implement lightweight audio DSP - active crossovers, EQ, or mixing - using its 40-bit accumulators and hardware MAC at 70 MIPS. Estimated: a 48 kHz, 32-tap biquad chain of 5 filters consumes roughly 6 MIPS, well within budget. The onboard op amps can buffer or sum signals, reducing external component count in cost-sensitive audio products like powered speakers and automotive amplifier control heads. For full-range high-fidelity processing, dedicated audio DSPs outperform this DSC, but the GP504 excels when audio processing is one task among motor control or power-supply duties in the same product - consolidating multiple functions into a single 44-QFN device lowers BOM cost.
Recommended
Embedded Control with Data Logging and Connectivity
As a general embedded controller, the DSPIC33EP32GP504-I/ML runs application firmware, logs data to SPI/SD or I2C EEPROM storage, and exchanges commands over UART or SPI with radio modules and displays. The 32 KB Flash accommodates control firmware plus a simple bootloader; engineers expecting growth should consider pin-compatible 64 KB or 128 KB GP504 variants on the same PCB footprint. The ICSP interface supports field firmware updates via MPLAB Snap or in-system programmers. The industrial temperature range and active production status (per Microchip's product page, 2026) give long-term supply confidence for multi-year product cycles in metering, HVAC control, and instrumentation applications.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33EP32GP504-I/ML — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33EP32GP504-E/ML | DSPIC33EP64GP504-I/ML | DSPIC33EP128GP504-I/ML | DSPIC33EP256GP504-I/ML | DSPIC33EP32MC504-I/ML |
|---|---|---|---|---|---|---|
| Package | 44-QFN (8x8 mm) | 44-QFN (8x8 mm) - same | 44-QFN (8x8 mm) - same | 44-QFN (8x8 mm) - same | 44-QFN (8x8 mm) - same | 44-QFN (8x8 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 32 KB (10.7K x 24) | 32 KB | 64 KB | 128 KB | 256 KB | 32 KB |
| Max Speed | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS |
| Operating Temperature | -40C to +85C (I) | -40C to +125C (E) | -40C to +85C (I) | -40C to +85C (I) | -40C to +85C (I) | -40C to +85C (I) |
| Peripheral Emphasis | General-purpose, Hi-Speed PWM, op amps | General-purpose (same) | General-purpose (same) | General-purpose (same) | General-purpose (same) | Motor control / power conversion peripherals |
| Lifecycle Status | In Production (active) | In Production (active) | In Production (active) | In Production (active) | In Production (active) | In Production (active) |
Key Differentiators
- Compact 32 KB cost-optimized Flash size (vs DSPIC33EP128GP504-I/ML)
- Standard industrial temperature grade (vs DSPIC33EP32GP504-E/ML)
- General-purpose analog and Hi-Speed PWM balance (vs DSPIC33EP32MC504-I/ML)
Design Notes
Place 0.1 uF ceramic decoupling capacitors directly at each VDD pin with short, low-inductance traces to the ground plane, and fit the dedicated capacitor on the internal core-regulator output exactly as specified in the family datasheet (DS70000657J) - omitting the regulator capacitor is the most common cause of brown-out instability on dsPIC33EP designs. Provide an ICSP header on MCLR/PGC/PGD for in-circuit programming with MPLAB Snap or ICD 3, keeping series resistance on MCLR per Microchip's programming specification so the debugger can apply programming voltage.
Because the 44-QFN package multiplexes analog and digital functions, partition the PCB so PWM and high-dv/dt traces are routed away from analog sense lines feeding the ADC and op amp pins. Use a solid, unbroken ground plane under the QFN; do not route switching currents across it. For high-speed PWM driving power stages, add small gate-series resistors and keep the controller-to-driver loop compact to limit ringing that could couple into analog inputs and degrade ADC accuracy.
Three recurring mistakes on dsPIC33EP projects: (1) underestimating Flash usage - 32 KB is modest, so if firmware growth is likely, populate a pin-compatible 64 KB or 128 KB GP504 variant instead; (2) ignoring the -I versus -E temperature grade - the -I/ML part is rated only to +85C ambient, insufficient for enclosed motor drives; use DSPIC33EP32GP504-E/ML there; (3) selecting a cross-family dsPIC33FJ replacement, which is NOT pin or code compatible with the EP generation. Always recompile and verify the device ID after any family substitution.
Compliance Information
Compliance certificates were not present in the verified web data; confirm RoHS/REACH status on Microchip's official compliance portal before export-regulated production use.
