DSPIC33EP128MC502-E/SS - 16-bit 60 MIPS DSC, 128KB Flash | Microchip
MPN: DSPIC33EP128MC502-E/SS ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.85 | $3.85 |
| 10 | $3.62 | $36.20 |
| 100 | $3.45 | $345.00 |
| 500 | $3.2 | $1,600.00 |
| 1,000 | $2.95 | $2,950.00 |
DSPIC33EP128MC502-E/SS Overview
A Digital Signal Controller combines the compute characteristics of a microcontroller with DSP-class multiply-accumulate throughput, sitting between a general-purpose MCU and a dedicated DSP in the embedded hierarchy. The dsPIC33E family integrates a high-performance 16-bit pipelined core with DSP instruction extensions, making it the preferred class of device for control loops that need both fast math and rich on-chip peripherals.
Key features include the 60 MIPS dsPIC DSC core, 128 KB of self-programmable Flash with in-circuit and in-application programming support, high-speed PWM peripherals aimed at motor control, and multiple PGEC/PGED pin pairs (any pair can be used for ICSP as long as PGEC and PGED are used as a matched pair). The -E suffix grade covers the extended -40C to +125C range for demanding industrial environments.
Technically, the device follows the dsPIC33EP architecture with a 24-bit instruction word, hardware DSP multiply-accumulate, IEEE 1149.2-compatible JTAG boundary scan, two program and two complex data breakpoints, and trace/run-time watch debugging. SEGGER tooling and Microchip MPLAB X with NSDSP programmers are supported, easing integration into existing development flows.
Typical applications include precision motor control (BLDC, PMSM, ACIM), digital power conversion (PFC, LLC, inverters), and sensor signal processing in industrial automation, where the high-speed PWM plus DSP core combination reduces external component count.
For design, power the core through the VCAP/VDDCORE pin with the recommended external capacitor, connect all VDD/VSS pairs, and reserve a PGEC/PGED pair for production programming headers.
This page adds value beyond the datasheet by synthesizing distributor pricing, drop-in alternatives within the same 28-SSOP footprint, and application-level design guidance in one place.
Drop-in alternatives for DSPIC33EP128MC502-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 DSPIC33EP128MC502-E/SS (same form factor and footprint) — differing in Operating Temperature, Core, Package, Qualification, Maximum CPU Speed.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33EP128MC502-I/SS
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$2.55 / Unit
View Datasheet →DSPIC33EP128GP502-E/SS
✅ Drop-In✓ In Stock
$2.75 / Unit
View Datasheet →DSPIC33CK64MC102T-I/SS
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$1.18 / Unit
View Datasheet →DSPIC33CK64MC102-I/SS
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$1.74 / Unit
View Datasheet →DSPIC33CK32MC102T-I/SS
✅ Drop-In✓ In Stock
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View Datasheet →DSPIC33EP128MC502-E/SS Maximum Ratings & Electrical Characteristics
| Core Type | dsPIC33E 16-bit DSC core |
| CPU Speed | 60 MIPS |
| Program Memory Size | 128 KB (43K x 24) Flash |
| RAM Size | 16 KB |
| Data Bus Width | 16 bit |
| Package | 28-SSOP |
| Mounting Type | Surface Mount |
| Operating Temperature | -40C to +125C (extended, -E grade) |
| Supply Voltage | 3.0 V to 3.6 V (per dsPIC33EP family operating range) |
| Instruction Word | 24 bit |
| Programming | In-Circuit and In-Application Programming (ICSP, multiple PGEC/PGED pairs) |
| Debug / Trace | 2 program + 2 complex data breakpoints, trace and run-time watch |
| JTAG | IEEE 1149.2 compatible boundary scan |
| Target Application Family | Motor Control (MC) family with high-speed PWM and advanced analog |
DSPIC33EP128MC502-E/SS 28-ssop Pin Configuration Guide
Pin configuration for DSPIC33EP128MC502-E/SS (28-ssop 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 DSPIC33EP128MC502-E/SS.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33EP128MC502-E/SS is suitable for 6 applications: Precision BLDC/PMSM Motor Control, Digital Power Conversion (PFC, LLC, Inverters), Industrial Sensor Signal Processing, Embedded Industrial Automation Nodes, Robotics Servo Drives, Automotive-Adjacent and Harsh-Environment Control.
Precision BLDC/PMSM Motor Control
The DSPIC33EP128MC502-E/SS is purpose-built for precision motor control: its 60 MIPS dsPIC33E core executes field-oriented control (FOC) current loops at 10-20 kHz update rates using hardware DSP multiply-accumulate, while the MC-family high-speed PWM generates complementary gate drive with dead-time insertion. In a typical BLDC or PMSM servo drive, the DSC reads phase currents through its on-chip ADC, runs the FOC loop, and updates PWM duty cycles within a single control period, eliminating an external DSP. The extended -40C to +125C grade suits industrial drives with elevated ambient temperatures. Budget roughly 70-80% of the 128 KB Flash for control firmware plus communication stacks (CAN/UART), leaving headroom for field-updatable parameter tables.
Recommended
Digital Power Conversion (PFC, LLC, Inverters)
Switching power stages - power-factor-correction stages, LLC resonant converters, and solar/string inverters - benefit from the DSPIC33EP128MC502-E/SS because the MC-family high-speed PWM supports nanosecond-resolution duty updates and phase-shifted topologies, while the 60 MIPS core closes voltage and current loops digitally. A typical design runs the inner current loop at 50-100 kHz PWM frequency with cycle-by-cycle current limiting in hardware, and the outer voltage loop in firmware. The 3.0 V to 3.6 V supply range matches standard 3.3 V logic rails, and the 28-SSOP footprint keeps controller area small on dense power boards. The extended temperature rating is valuable inside sealed power supplies where ambient temperatures reach 85C or higher.
Recommended
Industrial Sensor Signal Processing
In sensor-heavy industrial equipment - pressure transmitters, load cells, vibration monitors - the DSPIC33EP128MC502-E/SS applies its DSP multiply-accumulate engine to FIR/IIR filtering and FFT-based analysis directly on the 16 KB RAM, while the 60 MIPS core handles protocol and diagnostics tasks concurrently. The 128 KB Flash accommodates compensation tables and calibration routines that 32 KB-class MCUs cannot hold. Sampling from the integrated analog inputs, the device can perform a 1024-point FFT in the millisecond range typical of condition-monitoring applications. The -40C to +125C extended grade allows mounting near motors or heaters, and multiple PGEC/PGED pairs let a single in-circuit programming header serve production line updates without board redesign.
Recommended
Embedded Industrial Automation Nodes
As the intelligence in PLC I/O points, valve controllers, and small automation nodes, the DSPIC33EP128MC502-E/SS provides deterministic 60 MIPS execution for real-time control plus enough Flash for protocol stacks, web-style configuration pages, and OTA-style firmware slots. JTAG boundary scan (IEEE 1149.2 compatible) simplifies production test of assembled boards, and two program plus two complex data breakpoints accelerate firmware development. The 28-SSOP package suits dense multi-node boards where each node occupies under 10 mm x 10 mm of controller footprint. Because the device is supported by MPLAB X, SEGGER, and NSDSP toolchains, it integrates into existing Microchip-standardized manufacturing flows without new tooling investment.
Recommended
Robotics Servo Drives
Robot joint servo drives need fast current loops, position feedback processing (quadrature/hall), and safety monitoring in a compact controller - all strengths of the DSPIC33EP128MC502-E/SS. The 60 MIPS core sustains cascaded position/velocity/current loops at kHz rates, the high-speed PWM drives three-phase bridges with dead-time control, and the 128 KB Flash holds trajectory interpolation firmware plus communication stacks. The extended -40C to +125C temperature range tolerates heat-soaked joint housings where cooling is limited. Using the matched PGEC/PGED programming pairs, each servo board retains a small 3-pin production programming pad. Firmware developed on the 33EP family can migrate to the 100 MHz dsPIC33CK generation in the same 28-SSOP footprint when loop bandwidth demands grow.
Recommended
Automotive-Adjacent and Harsh-Environment Control
Although the DSPIC33EP128MC502-E/SS is an industrial-grade (not AEC-Q100-qualified) part, its extended -40C to +125C rating makes it suitable for harsh-environment applications adjacent to automotive: off-highway equipment, agricultural implements, marine auxiliaries, and stationary industrial systems exposed to engine-bay-like temperatures. The 60 MIPS DSP core handles pump, fan, and compressor motor control with FOC, while the 128 KB Flash supports diagnostic logging and fault-tolerant control strategies. The 3.3 V supply eases integration with 3.3 V sensor and transceiver ICs, and the 28-SSOP package withstands standard industrial reflow profiles. For applications requiring certified automotive qualification, select a Microchip AEC-Q100-qualified variant instead.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33EP128MC502-E/SS — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33EP128MC502-I/SS | DSPIC33EP128GP502-E/SS | DSPIC33CK64MC102T-I/SS | DSPIC33CK32MC102T-I/SS |
|---|---|---|---|---|---|
| Package | 28-SSOP | 28-SSOP - same | 28-SSOP - same | 28-SSOP - same | 28-SSOP - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core / CPU Speed | dsPIC33E, 60 MIPS | dsPIC33E, 60 MIPS | dsPIC33E, 60 MIPS | dsPIC33CK, 100 MHz | dsPIC33CK, 100 MHz |
| Flash Memory | 128 KB (43K x 24) | 128 KB | 128 KB | 64 KB | 32 KB |
| Peripheral Family | MC (motor control, high-speed PWM) | MC (motor control) | GP (general purpose) | MC (motor control, 33CK generation) | MC (motor control, 33CK generation) |
| Operating Temperature | -40C to +125C (extended) | -40C to +85C (industrial) | -40C to +125C (extended) | -40C to +85C (industrial) | -40C to +85C (industrial) |
| Drop-in Compatibility | Reference part (28-SSOP) | True drop-in (same die) | Same footprint, firmware re-verify for peripherals | Same footprint, firmware re-verify (33CK core) | Same footprint, verify Flash fits firmware |
| Relative Cost Tier | Mid (extended temp, MC family) | Slightly lower (industrial grade) | Comparable | Lower (half Flash) | Lowest (quarter Flash) |
Key Differentiators
- Extended temperature range with full 128 KB Flash (vs DSPIC33EP128MC502-I/SS)
- Motor-control peripheral set (vs DSPIC33EP128GP502-E/SS)
- Largest Flash in the same 28-SSOP footprint (vs DSPIC33CK64MC102T-I/SS)
- Mature 33EP tooling ecosystem (vs DSPIC33CK32MC102T-I/SS)
Design Notes
Power the dsPIC33EP core through the dedicated VCAP/VDDCORE pin (pin 11 on the 28-SSOP) with the regulator-stabilizing capacitor specified in the family datasheet - this internal LDO output must not be driven from an external rail. Connect every VDD and VSS pair, including the multiple ground pins on the 28-pin package, with short traces to the 3.3 V plane; the family operating range is 3.0 V to 3.6 V, so a clean 3.3 V regulator with local 0.1 uF plus bulk decoupling at each VDD pin is required for reliable 60 MIPS operation.
ICSP programming requires a MATCHED PGECx/PGEDx pair: if PGEC2 carries ICSPCLK, ICSDAT must connect to PGED2 - mixing pairs from different indices will fail programming. Per Microchip's device support documentation, the device has multiple such pairs, so pick one and route it to a 3-to-5 pin production header. Also note the 24-bit instruction word means 128 KB Flash equals 43K instructions, not 128K instructions; size your firmware map accordingly when migrating from 8-bit parts.
For motor-control or digital-power designs, keep the high-speed PWM outputs away from the analog inputs feeding the on-chip ADC, and place a ground guard or analog island under sense-line routing. Route the OSC1/OSC2 crystal traces (or external clock) short and symmetric, and use the IEEE 1149.2-compatible JTAG boundary-scan chain in production test fixtures to verify board-level connectivity before first power-up. Reserve the debug pins on a test point header since two program and two complex data breakpoints plus trace features require the full debug connection for effective MPLAB X debugging.
Compliance Information
RoHS/REACH/lead-free certificate values were not captured in the provided verified web data; confirm on Microchip's official product page. Part is an industrial-grade DSC, not AEC-Q100 automotive qualified.
