DSPIC33EP32GP502-E/SS - 16-Bit 60 MIPS DSC 32KB Flash | Microchip
MPN: DSPIC33EP32GP502-E/SS ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.85 | $3.85 |
| 10 | $3.48 | $34.80 |
| 100 | $3.05 | $305.00 |
| 500 | $2.72 | $1,360.00 |
| 1,000 | $2.45 | $2,450.00 |
DSPIC33EP32GP502-E/SS Overview
A digital signal controller combines the computational throughput of a digital signal processor (DSP) with the peripheral integration and control architecture of a microcontroller (MCU). In the system hierarchy, the dsPIC33EP family sits under the 16-bit MCU/DSC category of Microchip's portfolio, providing a single-chip solution for control loops that also need fast math, high-speed PWM, and analog integration.
Key features include high-speed PWM outputs for motor control and power conversion, integrated operational amplifiers (Op Amps) and advanced analog peripherals, multiple UART/SPI/I2C communication interfaces, and multiple pairs of PGECx/PGEDx pins supporting in-circuit serial programming (ICSP) via MPLAB X tools such as ICD 3, PICkit 3/4, and REAL ICE. The E temperature suffix qualifies the device for -40C to +125C operation, exceeding the standard industrial rating.
Architecturally, the dsPIC33EP core is a modified Harvard 16-bit RISC engine with DSP multiply-accumulate (MAC) instructions, a 3.3V supply range (3.0V to 3.6V), and internal FRC/PLL clocking that reaches the family maximum frequency without an external crystal, reducing bill-of-material cost.
Typical applications include sensorless and brushed/BLDC motor control, switch-mode power supplies and LED drivers, automotive AEC-Q100-qualified subsystems, industrial control panels, and general-purpose embedded systems requiring deterministic control plus DSP math.
Design consideration: use ICSP pin pairs as matched pairs - for example, PGEC2 with PGED2 for ICSPCLK/ICSPDAT - and always fit the VCAP/VDDCORE stabilization capacitor per the family datasheet.
This page synthesizes verified distributor data, drop-in same-package alternatives, practical design notes, and pricing tiers not found in the manufacturer datasheet alone.
Drop-in alternatives for DSPIC33EP32GP502-E/SS — 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 DSPIC33EP32GP502-E/SS (same form factor and footprint) — differing in Operating Temperature, Package, Program Memory (Flash), RAM, Analog Peripherals.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33EP32GP502-I/SS
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP16GP502-I/SS
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP64GP502-I/SS
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP128GP502-I/SS
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$2.9 / Unit
View Datasheet →DSPIC33EP32MC502-I/SS
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$2.99 / Unit
View Datasheet →DSPIC33EP32GP502-E/SS Maximum Ratings & Electrical Characteristics
| Core Architecture | 16-bit dsPIC33EP RISC (DSC) |
| Core Speed | 60 MIPS |
| Program Memory (Flash) | 32 KB (10.7K x 24) |
| RAM | 4 KB |
| Supply Voltage | 3.0 V to 3.6 V (3.3 V nominal) |
| Package | 28-SSOP (0.65 mm pitch) |
| Operating Temperature | -40C to +125C |
| Mounting Type | Surface Mount |
| Interfaces | UART, SPI, I2C |
| PWM | High-Speed PWM |
| Analog Peripherals | ADC, Op Amps, advanced analog |
| Programming | ICSP (PGECx/PGEDx pairs) |
| AEC-Q100 | Automotive qualified (per datasheets.com listing) |
| RoHS Status | Compliant (ROHS per JLCPCB listing) |
| Lifecycle Status | In Production |
| Pin Count | 28 |
DSPIC33EP32GP502-E/SS 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 / change notification / port B0 |
| Pin 3 | AN1/VREF-/CN2A/RB1 — Analog input 1 / negative voltage reference / change notification / port B1 |
| Pin 4 | AN2/SS1L1/CN4/RB4 — Analog input 2 / SPI slave select / change notification / port B4 |
| Pin 5 | AN3/IND1/CN5/RB5 — Analog input 3 / comparator-inductor output / change notification / port B5 |
| Pin 6 | VSS — Ground reference |
| Pin 7 | VDD — Positive supply (3.0 V to 3.6 V) |
| Pin 8 | PGD3/AN4/CN6/RB2 — Programming data pair 3 / analog input 4 / change notification / port B2 |
| Pin 9 | PGC3/AN5/CN7/RB3 — Programming clock pair 3 / analog input 5 / change notification / port B3 |
| Pin 10 | PGD1/AN6/OC1/CN8/RB6 — Programming data pair 1 / analog input 6 / output compare 1 / change notification / port B6 |
| Pin 11 | PGC1/AN7/CN9/RB7 — Programming clock pair 1 / analog input 7 / change notification / port B7 |
| Pin 12 | AN8/CN10/RB8 — Analog input 8 / change notification / port B8 |
| Pin 13 | AN9/CN11/RB9 — Analog input 9 / change notification / port B9 |
| Pin 14 | TMS/AN10/CN12/RB10 — JTAG test mode select / analog input 10 / change notification / port B10 |
| Pin 15 | TCK/AN11/CN13/RB11 — JTAG test clock / analog input 11 / change notification / port B11 |
| Pin 16 | AN12/CN14/RB12 — Analog input 12 / change notification / port B12 |
| Pin 17 | AN13/CN15/RB13 — Analog input 13 / change notification / port B13 |
| Pin 18 | VSS — Ground reference |
| Pin 19 | VDD — Positive supply (3.0 V to 3.6 V) |
| Pin 20 | PGD2/AN14/CN16/RB14 — Programming data pair 2 / analog input 14 / change notification / port B14 |
| Pin 21 | PGC2/AN15/CN17/RB15 — Programming clock pair 2 / analog input 15 / change notification / port B15 |
| Pin 22 | VCAP/VDDCORE — CPU core voltage stabilization capacitor (connect per datasheet) |
| Pin 23 | RF4/SDA1 — Port F4 / I2C data 1 |
| Pin 24 | RF5/SCL1 — Port F5 / I2C clock 1 |
| Pin 25 | RF3/U1TX — Port F3 / UART 1 transmit |
| Pin 26 | RF2/U1RX — Port F2 / UART 1 receive |
| Pin 27 | AVSS — Analog ground reference |
| Pin 28 | AVDD — Analog supply (3.0 V to 3.6 V) |
Typical Applications
DSPIC33EP32GP502-E/SS is suitable for 6 applications: BLDC and PMSM Motor Control, Digital Power Supplies and LED Drivers, Automotive Control Modules, Industrial Automation and Sensing, Portable Measurement and DSP Signal Chains, Embedded Control and IoT Edge Nodes.
BLDC and PMSM Motor Control
The DSPIC33EP32GP502-E/SS fits motor control because its 60 MIPS 16-bit DSP core executes field-oriented control (FOC) algorithms with single-cycle MAC instructions, while the Hi-Speed PWM block generates complementary, dead-time-controlled outputs for three-phase inverters. The -40C to +125C rating survives motor-drive thermal environments, and the AEC-Q100 listing supports automotive pumps, fans, and actuators. In a typical design the PWM runs at 16-20 kHz switching frequency with ADC-triggered current sampling synchronized to PWM boundaries, closing the FOC current loop well within one PWM period. Placing the DSC directly on the control PCB near the gate drivers minimizes loop latency; the integrated Op Amps can condition shunt-current signals without an external amplifier stage, saving BOM cost.
Recommended
Digital Power Supplies and LED Drivers
For switch-mode power conversion, this DSC combines Hi-Speed PWM with advanced analog peripherals so that voltage and current feedback is digitized and compensated digitally, enabling adaptive control laws that analog error amplifiers cannot implement. The 60 MIPS throughput closes the control loop at tens of kHz switching frequencies, and the integrated Op Amps buffer shunt or resistor-divider feedback directly. The -E extended temperature rating suits LED drivers in sealed luminaires where junction environments exceed 85C. Typical topology usage: PWM at 100-500 kHz with ADC sampling at mid-PWM-cycle, digital PID compensator executed each cycle. A key benefit is firmware-tunable output regulation and fault thresholds without hardware redesign, and ICSP allows field updates via a production programmer on the final assembly line.
Recommended
Automotive Control Modules
The AEC-Q100 qualification and -40C to +125C rating make the DSPIC33EP32GP502-E/SS appropriate for automotive body, pump, and actuator control modules that are not safety-critical ASIL functions. Its 3.0V-3.6V supply interfaces cleanly with automotive 5V rails through a regulator, while UART/SPI/I2C support LIN-adjacent and sensor networking. The extended rating is essential for modules mounted near the engine bay or inside headlamp housings where ambient temperatures exceed standard industrial limits. Microchip's family page explicitly cites automotive among the demanding target applications. Design practice includes using the internal FRC with PLL for clock redundancy, watchdog supervision, and locking configuration bits against accidental writes; ICSP pins should be routed to a production programming pad for end-of-line firmware flashing.
Recommended
Industrial Automation and Sensing
In factory automation nodes, the DSC's DSP math handles digital filtering, RMS calculation, and FFT-based condition monitoring on vibration or current signatures, while the general-purpose peripherals manage I2C sensors, SPI expanders, and UART links to PLC networks. The 60 MIPS core leaves generous headroom over a 1 kHz control loop, and 32KB Flash is sufficient for sensor drivers, a communication stack, and a small filtering pipeline. The integrated Op Amps reduce external analog component count on dense I/O boards. Because the 28-SSOP footprint is shared across the 16KB/32KB/64KB/128KB GP502 family, one PCB can be populated with the memory tier matching each SKU - a common industrial BOM-optimization strategy that reduces qualification effort across a product line.
Recommended
Portable Measurement and DSP Signal Chains
Handheld meters, power analyzers, and acoustic sensing tools benefit from the single-cycle multiply-accumulate and hardware DSP addressing modes of the dsPIC33EP core, which outperform software-emulated math on general MCUs for FFT and FIR workloads. The integrated ADC plus Op Amps digitize transducer outputs, and 60 MIPS enables real-time processing of multi-kHz bandwidth signals that 8-bit parts cannot sustain. The 3.3V operation and SSOP-28 size support compact battery-powered enclosures, and the extended temperature rating tolerates outdoor field use. A practical design point: run the core from the internal FRC-PLL to avoid crystal start-up delays in battery-operated duty-cycled systems, waking only on peripheral triggers to stretch battery life between measurements.
Recommended
Embedded Control and IoT Edge Nodes
As a general-purpose embedded controller, the DSPIC33EP32GP502-E/SS offers deterministic real-time behavior, five-volt-tolerant-style robust peripheral design philosophy, and standard UART/SPI/I2C interfaces to Wi-Fi or LoRa modules for edge IoT nodes. Applications include smart relays, HVAC zone controllers, and pump controllers where the DSC runs both the control loop and the protocol gateway. The In Production status guarantees long-term sourcing, important for IoT hardware intended to ship for years. Using ICSP with matched PGECx/PGEDx pairs allows reprogramming mounted boards during production and field service. The 32KB Flash accommodates an application plus lightweight communication firmware; designs that later need TLS stacks or larger buffers can migrate to the pin-compatible 64KB or 128KB GP502 variants without PCB changes.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33EP32GP502-E/SS — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33EP32GP502-I/SS | DSPIC33EP16GP502-I/SS | DSPIC33EP64GP502-I/SS | DSPIC33EP128GP502-I/SS | DSPIC33EP32MC502-I/SS |
|---|---|---|---|---|---|---|
| Package | 28-SSOP | 28-SSOP - same | 28-SSOP - same | 28-SSOP - same | 28-SSOP - same | 28-SSOP - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core Speed | 60 MIPS | 60 MIPS | 60 MIPS | 60 MIPS | 60 MIPS | 60 MIPS |
| Flash Memory | 32 KB | 32 KB | 16 KB (-50%) | 64 KB (+100%) | 128 KB (+300%) | 32 KB |
| Operating Temperature | -40C to +125C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
| Peripheral Emphasis | General purpose: PWM, Op Amps, advanced analog | General purpose - same | General purpose - same | General purpose - same | General purpose - same | Motor-control (MC) feature mix |
Key Differentiators
- Extended -40C to +125C temperature rating (vs DSPIC33EP32GP502-I/SS)
- Balanced memory/performance point in the family (vs DSPIC33EP16GP502-I/SS)
- General-purpose peripheral mix with integrated Op Amps (vs DSPIC33EP32MC502-I/SS)
Design Notes
Supply the VDD pins from a clean 3.0V-3.6V rail and decouple each VDD pin and AVDD with 0.1uF ceramic capacitors placed within 5 mm of the pins. Critically, fit the manufacturer-specified capacitor on the VCAP/VDDCORE pin (pin 22) - the internal low-dropout core regulator depends on it for stability. Omitting or undersizing this capacitor is the single most common bring-up failure on the dsPIC33EP family, producing brown-out resets and erratic execution. Separate the analog supply path to AVDD through an RC or ferrite filter to preserve ADC accuracy.
ICSP programming requires matched PGECx/PGEDx pairs: if PGEC2 (pin 21) carries ICSPCLK, the data must be on PGED2 (pin 20) - mixing pins from different pairs will fail programming, per northernsoftware.com device notes. Also, ANx pins default to analog mode after reset; digital inputs read 0 until the AD1PCFGL register switches them to digital, a frequent cause of 'my GPIO does not work' issues on this family. Lock configuration bits (oscillator source, watchdog, code protection) before production flashing.
Route the 28-SSOP fanout with short, direct traces for the Hi-Speed PWM outputs to gate drivers; keep each PWM pair and its ground return tightly coupled to minimize ringing at 16-500 kHz switching edges. Place the VCAP capacitor first in the layout, then VDD/AVDD decoupling, then crystal (if used) closest to the OSC pins. Provide a solid ground plane under the analog section and keep ANx traces away from PWM switching nodes to protect ADC accuracy from digital noise coupling.
Compliance Information
ROHS compliance per JLCPCB listing; AEC-Q100 automotive qualification per datasheets.com and Microchip USA listings; In Production status per Microchip product page. REACH/halogen-free status not stated in provided data.
