DSPIC33EP128MC202-I/SO - 16-bit DSC 60MHz 128KB Flash | Microchip
MPN: DSPIC33EP128MC202-I/SO ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $5.86 | $5.86 |
| 10 | $5.32 | $53.20 |
| 100 | $4.71 | $471.00 |
| 500 | $4.28 | $2,140.00 |
| 1,000 | $3.92 | $3,920.00 |
DSPIC33EP128MC202-I/SO Overview
A digital signal controller merges the compute power of a DSP with the peripheral integration and interrupt responsiveness of a microcontroller. Within the power management hierarchy of embedded systems, a DSC sits above generic MCUs for math-intensive real-time control loops, making the dsPIC33E family a staple of digital power and precision motor control engineering.
Key features include a 16-bit modified Harvard architecture with DSP engine (single-cycle MAC, 40-bit accumulator), high-speed PWM modules purpose-built for motor and power conversion, 4 DMA channels, 5 timers, and 3 external interrupt sources. The integrated enhanced peripherals allow brushless DC, permanent magnet, and other motor types to be controlled without external signal-chain components.
Technically, the device executes C and assembly with hardware divide, dual operand fetch, and zero-overhead looping. Its low-power modes (Idle, Sleep, Doze) reduce consumption in battery-aware designs, and the CMOS process supports industrial noise margins.
Typical applications include brushless DC motor drives, digital power supplies (PFC, LLC), solar inverters, and sensorless FOC controllers where deterministic 70 MIPS-class throughput and high-resolution PWM are decisive.
Design consideration: this part operates at 3.0V-3.6V-class supply rails typical of the family - verify the exact electrical characteristics in the manufacturer datasheet before layout, and budget the 28-pin SOIC thermals for continuous PWM output drive.
This page synthesizes distributor pricing, drop-in alternatives within the dsPIC33EP 28-pin family, and practical design notes not found in a single manufacturer datasheet.
Drop-in alternatives for DSPIC33EP128MC202-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 DSPIC33EP128MC202-I/SO (same form factor and footprint) — differing in Package, Operating Temperature, Core Architecture, Program Memory (Flash), Supply Voltage.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
dsPIC33EP128MC202-E/SO
✅ Drop-In📋 Reference alternative (not in catalog)
dsPIC33EP256MC202-I/SO
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
dsPIC33EP64MC202-I/SO
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
dsPIC33EP32MC202-I/SO
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
dsPIC33EP128GP502-I/SO
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP128MC202-I/SO Maximum Ratings & Electrical Characteristics
| Core | 16-bit dsPIC DSC |
| Program Memory Size | 128 KB Flash |
| RAM Size | 16 KB |
| Maximum Clock Frequency | 60 MHz |
| Core Performance | Up to 70 MIPS (dsPIC33E family core) |
| DMA Channels | 4 |
| Timers | 5 |
| External Interrupts | 3 |
| Package | 28-pin SOIC (SO) |
| Mounting Type | Surface Mount |
| Operating Temperature | -40C to +85C (I grade) |
| Process Technology | CMOS |
| Low Power Modes | Yes (Idle, Sleep, Doze) |
| DSP Engine | Single-cycle MAC, 40-bit accumulator |
| Specialized Peripherals | High-speed PWM for motor control and digital power |
DSPIC33EP128MC202-I/SO 28-pin soic (so) Pin Configuration Guide
Pin configuration for DSPIC33EP128MC202-I/SO (28-pin soic (so) 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 DSPIC33EP128MC202-I/SO.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33EP128MC202-I/SO is suitable for 6 applications: Brushless DC Motor Control, Digital Power Supplies (PFC / LLC), Solar Micro-Inverters and Solar Optimizers, Industrial Sensorless FOC Drives, Battery-Powered Power Tools and E-mobility, Industrial Automation and Embedded Control Nodes.
Brushless DC Motor Control
The DSPIC33EP128MC202-I/SO fits BLDC motor drives because its 60 MHz (up to 70 MIPS) core executes field-oriented control math with a single-cycle MAC DSP engine while its high-speed PWM generates the six-phase commutation pattern with hardware dead-time insertion. In a typical sensorless FOC drive, the DSC closes the current loop at 20-50 kHz using Clark/Park transforms, reading shunt currents through its ADC and updating duty cycles every PWM period without software overhead. The 28-pin SOIC package integrates the entire controller - PWM, ADC, comparators, op-amps in the MC variant - minimizing BOM cost versus a discrete MCU-plus-gate-driver-signal-chain approach. Low-power Idle/Doze modes let the same controller idle efficiently between commutation events in battery-powered tools.
Recommended
Digital Power Supplies (PFC / LLC)
The DSPIC33EP128MC202-I/SO suits digital power conversion because 70 MIPS-class DSP throughput supports control loops for PFC and LLC converters switching at 100-500 kHz. Its high-speed PWM module provides complementary outputs, programmable dead time, cycle-stealing modes, and instant fault shutdown - features a generic MCU lacks. The device replaces analog control ICs with firmware-defined compensation, letting one PCB serve multiple output voltage specifications through software. In a typical implementation the DSC samples output voltage and inductor current each switching cycle, computes PID or 2P2Z compensation in fixed-point DSP math, and updates the PWM compare registers within the same period. The 128KB Flash accommodates the control firmware plus housekeeping, communication, and protection code with margin for field updates.
Recommended
Solar Micro-Inverters and Solar Optimizers
The DSPIC33EP128MC202-I/SO is well matched to panel-level power electronics: maximum power point tracking (MPPT) demands the DSP multiply-accumulate performance of the 70 MIPS core to run perturb-and-observe or incremental-conductance algorithms while simultaneously regulating a boost and DC-AC stage. Its high-speed PWM drives interleaved converter stages, and 4 DMA channels offload ADC sequencing so the CPU sustains deterministic loop timing. The industrial -40C to +85C rating covers rooftop ambient extremes, and the 28-pin SOIC keeps controller cost low for the aggressive price points of the solar market. Per Microchip, dsPIC33E devices enable more energy-efficient power conversion systems, directly improving panel-level conversion efficiency and energy yield.
Recommended
Industrial Sensorless FOC Drives
Sensorless field-oriented control of PMSM machines is a headline application for the dsPIC33EP MC-series. The DSPIC33EP128MC202-I/SO derives rotor position from back-EMF observers or sliding-mode estimators - heavy math that consumes the 70 MIPS DSP engine's single-cycle MAC throughput - while the high-speed PWM maintains sinusoidal phase currents with minimal torque ripple. Per Microchip, the dsPIC33E family enables motor systems that are more energy efficient, quieter in operation, and with extended life, which is exactly the value proposition of FOC over trapezoidal control. The 16KB RAM holds state observers, compensation filters, and communication buffers concurrently, and 3 external interrupt sources capture encoder or hall events with minimal latency for hybrid sensored/sensorless strategies.
Recommended
Battery-Powered Power Tools and E-mobility
Cordless tools and light e-mobility platforms use the DSPIC33EP128MC202-I/SO to control their high-current BLDC motors from 3-7S lithium packs. The 60 MHz core manages commutation, electronic braking, and pack protection logic simultaneously; low-power Sleep and Doze modes suppress quiescent drain so the controller does not deplete the pack between uses. The industrial temperature grade tolerates tool enclosures that heat under load, and the 28-pin SOIC footprint supports compact, shock-resistant two-layer boards. Its 128KB Flash holds commutation firmware plus Bluetooth-style configuration interfaces in the same image, and the 4 DMA channels stream current-sense ADC data without CPU intervention, keeping current-loop jitter low even as the application layer handles user-triggered events.
Recommended
Industrial Automation and Embedded Control Nodes
Beyond motor control, the DSPIC33EP128MC202-I/SO serves as a general industrial control node: its DSP engine accelerates digital filtering (IIR/FIR) for vibration and condition-monitoring sensors, while 5 timers, 4 DMA channels, and remappable RPx I/O pins adapt the 28-pin budget to mixed analog/digital tasks. Typical nodes combine sensor acquisition, PID process control, and a fieldbus interface on one DSC, replacing an MCU plus external DSP two-chip solution. The CMOS process and industrial -40C to +85C rating meet factory-floor environmental requirements, and the widely documented dsPIC33E ecosystem - MPLAB X IDE, XC16 compiler, and Code Configurator - shortens firmware development. This makes the part a low-risk, long-lifecycle choice for retrofit and OEM industrial equipment alike.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33EP128MC202-I/SO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | dsPIC33EP128MC202-E/SO | dsPIC33EP256MC202-I/SO | dsPIC33EP64MC202-I/SO | dsPIC33EP32MC202-I/SO | dsPIC33EP128GP502-I/SO |
|---|---|---|---|---|---|---|
| Package | 28-SOIC (SO) | 28-SOIC (SO) - same | 28-SOIC (SO) - same | 28-SOIC (SO) - same | 28-SOIC (SO) - same | 28-SOIC (SO) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 128 KB | 128 KB | 256 KB | 64 KB | 32 KB | 128 KB |
| RAM | 16 KB | 16 KB | 16 KB | 16 KB | 16 KB | 16 KB |
| Max Clock | 60 MHz (up to 70 MIPS) | 60 MHz (up to 70 MIPS) | 60 MHz (up to 70 MIPS) | 60 MHz (up to 70 MIPS) | 60 MHz (up to 70 MIPS) | 60 MHz (up to 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 Focus | Motor Control (MC) - high-speed PWM | Motor Control (MC) - same | Motor Control (MC) - same | Motor Control (MC) - same | Motor Control (MC) - same | General Purpose (GP) - different peripheral mix |
| DMA Channels | 4 | 4 | 4 | 4 | 4 | 4 |
Key Differentiators
- Largest flash in same footprint within cost-matched siblings (vs dsPIC33EP64MC202-I/SO)
- Extended temperature drop-in available (vs dsPIC33EP128MC202-E/SO)
- Motor Control peripherals vs General Purpose (vs dsPIC33EP128GP502-I/SO)
Design Notes
Decouple each VDD pin with a 100 nF ceramic capacitor placed within 5 mm of the pin, plus one bulk 4.7-10 uF capacitor per board. The dsPIC33E core generates transient currents during PWM edge updates that can cause brown-out resets if local decoupling is inadequate. Estimated: 28-pin SOIC with all PWM outputs driving capacitive loads can draw tens of mA of switching transients, so keep the VDD/VSS loop area minimal and use a solid ground plane. Enable the internal brown-out reset (BOR) feature for robust operation in noisy motor-drive environments.
Keep high-speed PWM traces short and route them away from the analog pins used for current-sense ADC inputs. Use the remappable RPx pin assignment feature to place peripheral I/O away from noisy power-stage nets. Star-ground the controller island from the power-stage ground; a motor drive switching amps at 20-50 kHz will corrupt ADC readings if controller ground is shared with the MOSFET source path. Place the current-sense shunt and its filtering resistor/capacitor close to the MCU analog pins per Microchip motor-control reference designs.
Do NOT confuse the -I/SO (28-SOIC) with the -I/MM (28-QFN 6x6 mm) or -E/SS (28-SSOP) variants during BOM substitution - they are not footprint-compatible despite identical electrical specs. Also verify MCLR configuration: the dsPIC33EP requires a pull-up (typically 10 kOhm) on MCLR and, for programming, an ICSP header on PGD/PGC pins; omitting the ICSP access renders the board unprogrammable. Finally, note that this device runs on a nominal 3.3V-class supply per the datasheet - it is not a 5V part, so level-shift any 5V peripherals.
Compliance Information
Compliance data not explicitly stated in the provided verified web data. Modern Microchip catalog parts of this family are typically RoHS-compliant, but per policy this must be confirmed from the manufacturer product page before relying on it.
