DSPIC33EP256MC202-I/MM - 70 MIPS 16-bit DSC QFN-28 | Microchip
MPN: DSPIC33EP256MC202-I/MM ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $5.1 | $5.10 |
| 10 | $4.59 | $45.90 |
| 100 | $4.1 | $410.00 |
| 500 | $3.68 | $1,840.00 |
| 1,000 | $3.3 | $3,300.00 |
DSPIC33EP256MC202-I/MM Overview
A digital signal controller combines the computational power of a digital signal processor with the deterministic control architecture of a microcontroller. Within the power-management hierarchy, a DSC sits between general-purpose MCUs and dedicated DSPs, making it the standard choice for closed-loop power conversion and motion systems where fast math execution and rich analog peripherals must coexist on one chip.
Key features include high-speed motor-control PWM peripherals with complementary outputs and dead-time control, on-chip op-amps for current-sense amplification, and advanced analog with multiple 10-bit/12-bit ADC converters supporting simultaneous sampling. DMA channels offload the CPU during high-rate ADC conversions, and the 70 MIPS core executes DSP multiply-accumulate instructions in a single cycle, which is essential for field-oriented control (FOC) and digital filtering.
The dsPIC33EP architecture uses an enhanced modified Harvard pipeline with a 60 MHz internal clock rate (Mouser lists 60 MHz operating frequency), 3.0 V to 3.6 V supply operation, and an industrial temperature range of -40C to +85C for the -I suffix. Programming and debugging are handled through ICSP using any PGECx/PGEDx pair, with full support for the MPLAB X IDE and MPLAB ICD/REAL ICE toolchains.
Typical applications include precision motor control (BLDC, PMSM, FOC), digital power supplies (LLC, PFC, buck), solar micro-inverters, battery chargers, and industrial sensing nodes that combine control loops with analog measurement.
Design consideration: place the VCAP stabilization capacitor exactly as specified in the Microchip datasheet DS70000657J, and connect all VDD/VSS pairs; the regulator output capacitor is critical for startup reliability.
This page synthesizes distributor pricing, drop-in family alternatives, and practical design notes not found in the manufacturer datasheet alone.
Drop-in alternatives for DSPIC33EP256MC202-I/MM — 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 DSPIC33EP256MC202-I/MM (same form factor and footprint) — differing in Operating Temperature, Package, Core, Peripherals, Program Memory (Flash).
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33EP128MC202-I/MM
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$4.9 / Unit
View Datasheet →DSPIC33EP64MC202-I/MM
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$2.29 / Unit
View Datasheet →DSPIC33EP256MC202-E/MM
✅ Drop-In✓ In Stock
Contact for price
View Datasheet →DSPIC33EP256MC202-H/MM
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33EP256MC202-I/MM
✅ Drop-In✓ In Stock
$3.3 / Unit
View Datasheet →DSPIC33EP256MC202-I/MM Maximum Ratings & Electrical Characteristics
| Core Architecture | 16-bit dsPIC DSC |
| Max Operating Speed | 70 MIPS |
| Operating Frequency | 60 MHz |
| Program Memory (FLASH) | 256 KB (85.5K x 24) |
| SRAM | 32 KB |
| Supply Voltage Range | 3.0 V to 3.6 V |
| Package | 28-QFN-S (6x6 mm) |
| Mounting Type | Surface Mount |
| Operating Temperature | -40C to +85C (Industrial, -I suffix) |
| Peripherals | Motor Control PWM, Op Amps, DMA |
| ADC | Multiple 10-bit / 12-bit converters |
| Programming Interface | ICSP (PGECx/PGEDx pairs) |
| Family | dsPIC33EP MC20X (Motor Control) |
| Typical Applications | Precision Motor Control, Digital Power |
| Debugging Support | Yes (MPLAB ICD / REAL ICE) |
DSPIC33EP256MC202-I/MM 28-qfn-s (6x6 mm) Pin Configuration Guide
Pin configuration for DSPIC33EP256MC202-I/MM (28-qfn-s (6x6 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 DSPIC33EP256MC202-I/MM.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33EP256MC202-I/MM is suitable for 6 applications: Field-Oriented Motor Control (FOC), Digital Power Supplies (LLC, PFC, Buck), Solar Micro-Inverters, Battery Chargers and BMS, Industrial Sensing and Automation Nodes, Embedded DSP and Audio Processing.
Field-Oriented Motor Control (FOC)
The DSPIC33EP256MC202-I/MM is purpose-built for sensorless FOC of PMSM and BLDC motors. Its 70 MIPS dsPIC core executes single-cycle multiply-accumulate instructions, completing Clarke/Park transforms and PI current loops at 10-20 kHz PWM frequencies with margin to spare. The high-speed motor-control PWM module generates complementary outputs with hardware dead-time insertion, while on-chip op-amps amplify low-level shunt-resistor phase currents before the simultaneous-sampling 12-bit ADC converts them with DMA offload. Place the controller between gate-driver ICs and the inverter bridge; the fully digital loop eliminates analog tuning and supports position estimation algorithms entirely in firmware, reducing BOM cost versus discrete DSP-plus-MCU solutions.
Recommended
Digital Power Supplies (LLC, PFC, Buck)
For digitally controlled AC-DC and DC-DC converters, the DSPIC33EP256MC202-I/MM provides the deterministic loop timing that digital power demands. The 70 MIPS core closes voltage and current loops in software with sub-microsecond latency, while high-resolution PWM phases support LLC burst-mode and phase-shift topologies. The 12-bit ADC with DMA captures output voltage and current each switching cycle without CPU intervention, and the on-chip op-amps can condition current-shunt signals externally. Compared with analog controllers, firmware enables soft-start profiles, nonlinear gain scheduling, and adaptive dead-time optimization - and the same PCB supports multiple topologies by reflashing firmware rather than redesigning compensation networks.
Recommended
Solar Micro-Inverters
Micro-inverters combine MPPT control, grid-synchronization, and safety monitoring in one controller - exactly the workload the DSPIC33EP256MC202-I/MM handles. The 70 MIPS core runs MPPT algorithms plus PLL grid-locking concurrently, DMA-driven ADC sampling captures panel voltage, current, and grid waveforms each cycle, and the high-speed PWM drives interleaved boost and H-bridge stages. The industrial -40C to +85C rating matches rooftop enclosure environments, and the 28-pin QFN footprint fits the compact per-panel form factor. Firmware-implemented anti-islanding and grid-fault detection replace discrete monitoring ICs, cutting component count while meeting grid-code requirements through software updates rather than hardware revision.
Recommended
Battery Chargers and BMS
Smart battery chargers benefit from the DSPIC33EP256MC202-I/MM's blend of control-loop speed and analog integration. The controller executes CC/CV/CV-trickle state machines with coulomb-counting in software, while the on-chip op-amps and 12-bit ADC monitor charge current and cell voltage with DMA-scheduled sampling. The high-speed PWM modulates the buck or synchronous-rectification power stage at hundreds of kHz. With 256 KB FLASH, the same device stores charging profiles, safety logs, and communication stacks (SMBus/UART), eliminating a separate supervisory MCU. The 28-pin QFN-S package suits compact charger dongles, e-bike chargers, and industrial battery packs.
Recommended
Industrial Sensing and Automation Nodes
In factory automation, the DSPIC33EP256MC202-I/MM serves as an intelligent sensing and actuation node. Its 16-bit core with DSP instructions runs digital filtering (IIR/FIR) on analog sensor channels sampled through the 12-bit ADC with DMA, while UART/SPI/I2C interfaces report data to SCADA or PLC networks. The on-chip op-amps condition strain-gauge, thermocouple, or pressure-sensor signals externally, and remaining PWM channels drive actuators or alarms. The 28-QFN-S 6x6 mm footprint fits distributed I/O modules, and the industrial temperature grade plus Microchip's long-lifecycle policy keeps multi-year production lines stable without forced redesigns.
Recommended
Embedded DSP and Audio Processing
The DSP engine of the DSPIC33EP256MC202-I/MM - single-cycle MAC, bit-reversed addressing for FFTs, and 70 MIPS throughput - makes it a practical embedded signal-processing controller for cost-sensitive audio and vibration products. Its ADC can sample microphone or accelerometer inputs while software implements spectral analysis, active noise cancellation coefficients, or tone generation, with PWM-DAC outputs driving simple audio paths. With 256 KB FLASH there is ample room for algorithm libraries plus a communications stack, and 32 KB SRAM supports meaningful FIR filter lengths. The QFN-28 package suits compact consumer and industrial products where a full DSP is overkill.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33EP256MC202-I/MM — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33EP128MC202-I/MM | DSPIC33EP64MC202-I/MM | DSPIC33EP256MC202-E/MM | DSPIC33EP256MC202-H/MM |
|---|---|---|---|---|---|
| Package | 28-QFN-S (6x6 mm) | 28-QFN-S (6x6 mm) - same | 28-QFN-S (6x6 mm) - same | 28-QFN-S (6x6 mm) - same | 28-QFN-S (6x6 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory (FLASH) | 256 KB (85.5K x 24) | 128 KB | 64 KB | 256 KB | 256 KB |
| SRAM | 32 KB | 32 KB | 32 KB | 32 KB | 32 KB |
| Core Speed | 70 MIPS / 60 MHz | 70 MIPS / 60 MHz | 70 MIPS / 60 MHz | 70 MIPS / 60 MHz | 70 MIPS / 60 MHz |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +125C | 0C to +70C |
| Pin Compatibility | dsPIC33EP MC202 28-QFN pinout (DS70000657J) | Pin-to-pin identical | Pin-to-pin identical | Pin-to-pin identical | Pin-to-pin identical |
Key Differentiators
- Maximum family FLASH at 28-pin cost point (vs DSPIC33EP128MC202-I/MM)
- Industrial temperature rating (vs DSPIC33EP256MC202-H/MM)
- Lower cost for reduced firmware (vs DSPIC33EP64MC202-I/MM)
Design Notes
The dsPIC33EP integrates an internal 2.5 V core regulator fed from the 3.0-3.6 V VDD rail; its output must be decoupled by the VCAP capacitor placed within a few millimeters of the VCAP pin with a low-ESR ceramic value exactly as specified in the Microchip family datasheet DS70000657J. Missing or misplaced VCAP capacitance is the most common cause of unreliable power-up on dsPIC33E designs. Connect all VDD and VSS pin pairs directly to short, wide traces, and add 0.1 uF decoupling at each VDD pin plus one bulk 4.7-10 uF capacitor.
For motor-control PWM outputs switching inductive loads, keep the controller's analog supply (AVDD/AVSS) on a quiet island separated from PWM switching currents; route AVDD through a ferrite bead from VDD and return AVSS at a single point near the ADC's reference ground. The on-chip op-amps used for current shunt amplification are only as accurate as their grounding - Kelvin-connect the shunt sense lines to the op-amp input pins and avoid sharing any ADC ground return with gate-driver loops that can carry tens of amps of switching current.
ICSP programming requires matched PGECx/PGEDx pairs: if PGEC2 carries ICSPCLK, ICSPDAT must be on PGED2 - mixing pairs from different channels fails silently per the NorthernSoftware dsPIC33EP256MC202 programming summary. Additionally, do not load MCLR with heavy capacitive pull-downs that can confuse the programming voltage detection. Estimated: keep MCLR trace short with a 10 kohm pull-up to VDD and, if needed for noise immunity, a 100 ohm-1 kohm series resistor rather than capacitance.
Compliance Information
RoHS compliance and lead-free finish inferred from active Microchip production status and DigiKey listing; formal RoHS/REACH certificates should be requested from Microchip. AEC-Q100 not applicable to the -I grade (the -E/MM variant is cited for automotive use by Microchip USA but no formal qualification statement appears in the provided data).
