DSPIC33EP256MC202-E/SO - 16-bit DSC 256KB Flash 60MIPS | Microchip
MPN: DSPIC33EP256MC202-E/SO ✓ Active| Qty | Unit Price | Extended |
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DSPIC33EP256MC202-E/SO Overview
A digital signal controller combines the deterministic interrupt structure and peripheral set of a microcontroller (MCU) with the multiply-accumulate (MAC) DSP engine of a digital signal processor. In the power-management hierarchy, the dsPIC33EP family sits between general-purpose MCUs and dedicated DSPs, making it the standard choice for closed-loop control systems such as digital power conversion and field-oriented motor control, where a single chip must execute both control algorithms and communication stacks.
Key features of this part include 256KB of self-programmable Flash, 16KB of on-chip SRAM (some distributor listings cite 32KB RAM - verify against the family data sheet DS70000657J), a 17-bit x 17-bit single-cycle MAC DSP engine, and dual working-register arrays for low-latency context switching. On-chip analog integrates two high-speed op amps, comparators, and a 10/12-bit ADC, while the Motor Control PWM (MCPWM) peripheral with complementary outputs and dead-time control, plus quadrature encoder interface (QEI), directly targets precision motor drive designs.
Connectivity includes I2C, SPI, up to two UARTs supporting IrDA and LINbus, and Microchip's Peripheral Trigger Generator (PTG). In-circuit serial programming (ICSP) via any PGECx/PGEDx pin pair simplifies production programming and field updates with tools such as MPLAB ICD and PICkit.
Typical applications include brushless DC (BLDC) and PMSM motor control with FOC, switch-mode power supplies and power factor correction, and automotive body or actuator modules requiring AEC-Q100 parts. The 60 MIPS core executes current loops fast enough for 100 kHz-class power stages.
Design consideration: the wide-body SOIC has higher thermal and signal-integrity limits than QFN variants but requires a 330-mil footprint - confirm land pattern compatibility before layout reuse.
This page synthesizes distributor data, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for DSPIC33EP256MC202-E/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 DSPIC33EP256MC202-E/SO (same form factor and footprint) — differing in Package, Operating Temperature, Core Architecture, Supply Voltage, Maximum CPU Speed.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33EP256MC202-I/SO
✅ Drop-In✓ In Stock
$3.48 / Unit
View Datasheet →DSPIC33EP128MU502-E/SO
✅ Drop-In✓ In Stock
$3.12 / Unit
View Datasheet →DSPIC33EP128MC202-E/SO
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP128GP502-H/SO
✅ Drop-In✓ In Stock
$3.36 / Unit
View Datasheet →DSPIC33EP64MC202-E/SO
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP256MC202-E/SO Maximum Ratings & Electrical Characteristics
| Core | 16-bit dsPIC DSC (RISC) |
| Maximum CPU Speed | 60 MIPS (device grade); dsPIC33EP family core up to 70 MIPS |
| Program Memory Size | 256KB (85.5K x 24) Flash |
| DSP Engine | 17-bit x 17-bit single-cycle MAC |
| Supply Voltage | 3.3 V |
| Package | 28-pin SOIC wide body (SOIC-W, 330 mil) |
| Mounting Type | Surface Mount |
| Operating Temperature | -40C to +125C (E, extended) |
| Qualification | Automotive AEC-Q100 |
| Connectivity | I2C, SPI, UART/USART, IrDA, LINbus, QEI |
| Motor Control Peripherals | MCPWM (complementary PWM, dead-time), QEI |
| Analog Peripherals | On-chip op amps, comparators, 10/12-bit ADC, PTG |
| Programming Interface | ICSP via PGECx/PGEDx pin pairs |
| Packaging | Tube |
DSPIC33EP256MC202-E/SO 28-pin soic wide body (soic-w, 330 mil) Pin Configuration Guide
Pin configuration for DSPIC33EP256MC202-E/SO (28-pin soic wide body (soic-w, 330 mil) 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-E/SO.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33EP256MC202-E/SO is suitable for 6 applications: BLDC/PMSM Motor Control (FOC), Digital Power Supplies and PFC, Automotive Body and Actuator Modules, Industrial Automation and Robotics, Sensor Signal Processing and Smart Sensing, Audio and DSP-Intensive Processing.
BLDC/PMSM Motor Control (FOC)
The DSPIC33EP256MC202-E/SO is purpose-built for sensorless and encoder-based field-oriented control of brushless DC and permanent-magnet synchronous motors. Its MCPWM peripheral generates complementary PWM pairs with hardware dead-time insertion, the quadrature encoder interface counts position feedback in hardware, and the dual on-chip op amps condition shunt-resistor phase currents before the 10/12-bit ADC samples them - eliminating external amplifier ICs. The 60 MIPS core with a single-cycle 17x17 MAC executes Clarke/Park transforms and PI current loops at the 10-20 kHz rates demanded by 100 kHz-class power stages. Firmware can run the entire FOC loop plus CAN/LIN communication on one chip. The trade-off is that its Flash-based algorithm tables must be sized carefully, which is why the 256KB variant suits feature-rich drives with position-observer lookup tables.
Recommended
Digital Power Supplies and PFC
Switch-mode power supplies and power-factor-correction stages benefit from the DSPIC33EP256MC202-E/SO's deterministic control path: MCPWM outputs drive half-bridge or flyback stages with dead-time control, while the high-speed ADC triggered by PWM automatically samples voltage and current at each switching period. The 60 MIPS core closes voltage-mode or average-current-mode loops with PID compensation in tens of nanoseconds of cycle time, and the 17x17 MAC accelerator implements notch filters for mitigate plant resonance. At 3.3V supply the part interfaces directly with gate-driver logic. Typical designs run boost PFC at 65-150 kHz switching frequency, where the DSC replaces analog control ICs and adds programmability for soft-start, brown-out handling, and digital telemetry over UART. The 256KB Flash leaves headroom for multiple converter profiles selected at runtime.
Recommended
Automotive Body and Actuator Modules
With AEC-Q100 qualification and a -40C to +125C operating range, the DSPIC33EP256MC202-E/SO fits automotive subsystems such as HVAC damper actuators, throttle-body control, pump drivers, and lighting ballasts. The LINbus-capable UART and I2C/SPI peripherals connect to body controllers, while the MCPWM and comparators drive DC motors and detect stall or over-current conditions in hardware, enabling fast fault shutdown independent of software latency. The extended temperature grade guarantees operation in under-hood adjacent zones and sealed enclosures where industrial parts cannot be qualified. Firmware stored in 256KB self-programmable Flash supports field reprogramming through ICSP for calibration updates during production. Engineers should verify their ECU qualification flow accepts the E-grade environmental data from the Microchip qualification summary before design sign-off.
Recommended
Industrial Automation and Robotics
Factory automation nodes use the DSPIC33EP256MC202-E/SO where coordinated motion, sensing, and communications converge on one controller. The QEI peripheral interfaces directly with incremental encoders on servo axes, the MCPWM stages drive stepper or DC motor H-bridges, and the DSP engine runs vibration or current-signature analysis for predictive maintenance. The Peripheral Trigger Generator automates ADC sampling sequences without CPU intervention, keeping loop jitter minimal, while UART with LINbus and I2C link the node to PLC backbones. The 256KB Flash accommodates multi-axis state machines and Modbus or CAN protocol stacks concurrently. Its wide-body SOIC package simplifies hand assembly and prototyping compared with fine-pitch QFNs, a practical advantage for low-volume industrial equipment that is reworked in the field.
Recommended
Sensor Signal Processing and Smart Sensing
The DSPIC33EP256MC202-E/SO's dual op amps and 12-bit-capable ADC make it a compact analog front-end plus processor for smart sensors: load cells, pressure transducers, and current shunts can be amplified on-chip, sampled under PTG-automated sequences, and filtered with the DSP MAC engine. Sixteen-bit averaging, window comparators in hardware, and threshold alarms run with negligible CPU load, while UART or I2C delivers processed results to a host. The 256KB Flash supports calibration tables, multi-range operation, and linearization curves that analog-only signal chains cannot match. Because the core runs at 60 MIPS, aggressive oversampling and digital noise rejection are practical at kHz sample rates. Battery-powered variants should evaluate the -I industrial grade and MPLAB-measured run/idle currents from the family data sheet for power budgeting.
Recommended
Audio and DSP-Intensive Processing
Applications requiring fixed-point DSP - active noise cancellation, acoustic echo cancellation, tone generation, or vibration analysis - map efficiently onto the DSPIC33EP256MC202-E/SO. The 17x17 single-cycle MAC executes FIR and IIR filters, FFTs, and PID-style corrections in deterministic time, and the DCI (data converter interface) peripheral found in the dsPIC33EP family clocks codecs directly. UART/SPI handle configuration traffic to audio CODECs and amplifiers. The 256KB Flash stores long coefficient sets and dual filter banks for switching profiles at runtime, and 3.3V operation simplifies integration with standard logic-level audio components. For designs demanding more RAM for delay lines, consider the 48KB-SRAM members of the family; for pure control-with-light-DSP loads, this 16KB-SRAM 28-pin part is the cost-optimized point.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33EP256MC202-E/SO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33EP256MC202-I/SO | DSPIC33EP128MU502-E/SO | DSPIC33EP128MC202-E/SO | DSPIC33EP128GP502-H/SO | DSPIC33EP64MC202-E/SO |
|---|---|---|---|---|---|---|
| Package | 28-pin SOIC wide (SOIC-W) | 28-pin SOIC wide - same | 28-pin SOIC wide - same | 28-pin SOIC wide - same | 28-pin SOIC wide - same | 28-pin SOIC wide - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Program Memory | 256KB (85.5K x 24) | 256KB | 128KB | 128KB | 128KB | 64KB |
| CPU Speed | 60 MIPS | 60 MIPS | 60 MIPS | 60 MIPS | 60 MIPS | 60 MIPS |
| Motor Control Peripherals (MCPWM, QEI, Op Amps) | Yes (MC family) | Yes (MC family) | No (MU family - USB instead) | Yes (MC family) | No (GP family - general purpose) | Yes (MC family) |
| Typical Role | Feature-rich automotive motor control / digital power | Industrial motor control, cost-optimized | USB-connected control / audio accessories | Automotive control with smaller firmware | General-purpose embedded control | Lowest-cost automotive control node |
Key Differentiators
- Automotive AEC-Q100 qualification in a through-hole-repair-friendly SOIC-W (vs DSPIC33EP256MC202-I/SO)
- Full 256KB Flash headroom in the 28-pin footprint (vs DSPIC33EP128MC202-E/SO)
- Motor-control analog integration (dual op amps, MCPWM, QEI) (vs DSPIC33EP128GP502-H/SO)
Design Notes
The 'SO' suffix denotes the 28-pin wide-body (330 mil / 7.5 mm) SOIC, not the narrow 208-mil SOIC used by some other 28-pin parts. Reusing a layout from a QFN (/MM) or SPDIP (/SP) variant will not fit - confirm the land pattern is drawn for SOIC-W before release. Place 100 nF ceramic decoupling capacitors directly across each VDD/VSS pair, keep the VCAP/VDDCORE capacitor on the designated pin close to the device per the family data sheet DS70000657J, and route the MCLR line with a 10 kohm pull-up so ICSP programming tools can assert reset.
ICSP programming requires using a matched PGECx/PGEDx pin pair: if PGEC2 carries ICSPCLK, ICSPDAT must be on PGED2 - mixing pairs from different indices (as NorthernSoftware's programming notes warn) fails programming. The part has multiple PGECx/PGEDx candidates on its 28 pins, so reserve the chosen pair on the connector. Also confirm E-grade thermal assumptions: the wide SOIC dissipates less heat than QFN equivalents, so at 60 MIPS with peripherals active, verify junction temperature stays within the -40C to +125C rating using Estimated: theta_JA for SOIC-W (typically around 80-100 C/W on a minimum-copper two-layer board) times your measured current draw.
The device operates from a single 3.3V rail with an internal core regulator - follow the family data sheet's VCAP capacitor value exactly and do not substitute a smaller dielectric, or the core rail may droop at 60 MIPS. Analog performance of the on-chip op amps and ADC depends on supply cleanliness: feed VDD from an LDO or well-filtered buck output, and use the ADC reference pins (VREF+/VREF-) rather than the raw supply when better than 1% measurement accuracy is needed. Budget your margin: at 60 MIPS the core current is the dominant load, and reducing peripheral clock gating in idle modes yields the largest current savings in battery-operated designs.
Compliance Information
AEC-Q100 automotive qualification confirmed by datasheets.com product description ('automotive aec-q100'). RoHS/REACH/lead-free status not captured in verified data - request compliance documentation from Microchip or distributor.
