DSPIC33EP256MC202T-I/SS - 16-bit 70MIPS DSC 256KB Flash | Microchip
MPN: DSPIC33EP256MC202T-I/SS ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $5.72 | $5.72 |
| 10 | $5.15 | $51.50 |
| 100 | $4.58 | $458.00 |
| 500 | $4.12 | $2,060.00 |
| 1,000 | $3.71 | $3,710.00 |
| 3,000 | $3.38 | $10,140.00 |
DSPIC33EP256MC202T-I/SS Overview
A digital signal controller combines the compute architecture of a microcontroller with the math-acceleration capability of a digital signal processor. In the power-management hierarchy, DSCs occupy the space between general-purpose MCUs and dedicated DSPs: they execute C code with MCU-class peripherals while performing single-cycle MAC and DSP instructions needed for control-loop mathematics such as FOC (field-oriented control) motor algorithms and digital power compensation loops.
Key features include the 70 MIPS dsPIC33E core with DSP engine, Motor Control PWM (MCPWM) peripherals, Quadrature Encoder Interface (QEI) inputs, and integrated analog: on-chip op amps, comparators, and a 10/12-bit Analog-to-Digital converter channel set (6 channels per distributor data). These peripherals eliminate external analog signal-conditioning ICs in motor-drive front ends, reducing board area and BOM cost.
Technical depth: the dsPIC33EP architecture features a modified Harvard 16-bit core with pipelined instruction execution, single-cycle 16x16 MAC, hardware divide support, and 24-bit instruction words fetched from self-programmable FLASH. Connectivity covers I2C, SPI, UART/USART, IrDA, and LINbus. Operating range is -40C to +85C (I temperature grade), with 21 general-purpose I/O lines.
Typical applications include precision sensorless and sensored motor control (BLDC, PMSM, stepper), digital power supplies and solar inverters, industrial automation nodes, and embedded systems requiring DSP filtering on analog inputs.
Design consideration: this tape-and-reel T-suffix part suits volume assembly; pair with 100nF decoupling on each VDD and place the VCAP/VDDCORE capacitor per the datasheet for stable core regulation.
This page synthesizes distributor pricing, same-package drop-in alternatives, and practical design notes not found in the manufacturer datasheet, as of 2026-09-24.
Drop-in alternatives for DSPIC33EP256MC202T-I/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 DSPIC33EP256MC202T-I/SS (same form factor and footprint) — differing in Package, RAM, Operating Temperature, Core, Supply Voltage.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33EP256MC202T-E/SS
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33EP256MC202-I/SS
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$2.64 / Unit
View Datasheet →DSPIC33EP128MC202-I/SS
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$3.44 / Unit
View Datasheet →DSPIC33EP64MC202-I/SS
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP128MC502-I/SS
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$2.55 / Unit
View Datasheet →DSPIC33EP256MC202T-I/SS Maximum Ratings & Electrical Characteristics
| Core Architecture | 16-bit dsPIC DSC core |
| Core Speed | 70 MIPS (device rated 70 MHz) |
| Program Memory (FLASH) | 256 KB (85.5K x 24) |
| RAM | 16K x 16 (32 KB) |
| Supply Voltage | 3 V to 3.6 V (3.3 V typical) |
| Number of I/O | 21 |
| ADC | 6 channels, 10-bit / 12-bit |
| PWM | Motor Control PWM (MCPWM) |
| Encoder Interface | QEI (Quadrature Encoder Interface) |
| Connectivity | I2C, SPI, UART/USART, IrDA, LINbus |
| Analog Peripherals | On-chip op amps and comparators |
| Package | 28-SSOP (0.209 in, 5.30 mm width) |
| Mounting Type | Surface Mount |
| Operating Temperature | -40C to +85C (I grade) |
| Packaging | Tape & Reel (T suffix) |
| Series | dsPIC33EP256MC202 (dsPIC 33EP) |
DSPIC33EP256MC202T-I/SS 28-ssop (0.209 in, 5.30 mm width) Pin Configuration Guide
Pin configuration for DSPIC33EP256MC202T-I/SS (28-ssop (0.209 in, 5.30 mm width) 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 DSPIC33EP256MC202T-I/SS.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33EP256MC202T-I/SS is suitable for 6 applications: BLDC / PMSM Motor Control, Digital Power Supplies and Solar Inverters, Industrial Automation and Sensor Nodes, Battery Management and Charging Systems, Audio and Signal Processing Front Ends, Automotive and Transportation Subsystems.
BLDC / PMSM Motor Control
The DSPIC33EP256MC202T-I/SS is purpose-built for precision motor control: its 70 MIPS DSP engine executes field-oriented control (FOC) with single-cycle 16x16 MAC instructions at kHz-rate current-loop closures, while the dedicated Motor Control PWM (MCPWM) module generates complementary dead-banded gate signals. The QEI input reads quadrature encoder feedback for sensored commutation, and the on-chip op amps plus 10/12-bit ADC sense shunt currents synchronized to the PWM period, removing external signal-conditioning ICs. Place the DSC between the position feedback inputs and the gate-driver inputs (e.g., an IR2184 or similar); the 256KB FLASH accommodates a full FOC stack plus parameter storage via EEPROM emulation.
Recommended
Digital Power Supplies and Solar Inverters
In digitally controlled AC-DC, DC-DC, and solar micro-inverter stages, this DSC closes voltage and current loops in software at 100 kHz-plus switching frequencies thanks to the 70 MIPS core and high-speed 10/12-bit ADC sampling triggered by the MCPWM module. The 256KB (85.5K x 24) FLASH holds PI/PID compensators, soft-start state machines, fault protection, and communication stacks simultaneously. On-chip comparators provide hardware-cycle current limiting faster than any software loop, protecting power MOSFETs during transients. Because the control law lives in firmware, the same 28-SSOP PCB serves multiple product power ratings - a major cost advantage over fixed analog control for volume production of power electronics.
Recommended
Industrial Automation and Sensor Nodes
The DSPIC33EP256MC202T-I/SS fits factory-floor nodes needing DSP processing plus robust connectivity: UART/USART, I2C, SPI, IrDA, and LINbus interfaces link it to sensors, HMIs, and field buses, while the DSP engine runs FIR/IIR filtering, FFT-based vibration analysis, or RMS metering math on the 10/12-bit ADC channels in real time. The -40C to +85C industrial temperature grade survives unconditioned cabinets, and 21 remappable RPx I/O pins let one board layout serve many sensor configurations by changing pin assignments in firmware. The 3.3V supply integrates directly with standard industrial logic, and LINbus support suits automotive-derived subsystems such as actuators and valve control.
Recommended
Battery Management and Charging Systems
Chargers and battery-management units benefit from the DSC's combination of precise analog measurement and safe control sequencing. The 10/12-bit ADC monitors cell voltages and current shunts, the MCPWM module drives synchronous buck charge stages with adjustable frequency and dead time, and the on-chip comparators implement hardware over-current trip points independent of firmware latency. With 256KB of FLASH, charge algorithms for multiple chemistries (Li-ion, LiFePO4, lead-acid) coexist in one part, selected at runtime. The 3.0V to 3.6V supply accepts standard LDO or buck rails, and the -I temperature grade covers typical indoor charging environments; the -E variant extends qualification to automotive on-board chargers.
Recommended
Audio and Signal Processing Front Ends
The DSP engine of the DSPIC33EP256MC202 makes it a practical host for audio preprocessing, acoustic sensor conditioning, and instrumentation signal chains. The 16x16 single-cycle MAC executes IIR filters, AGC, and notch filtering on ADC samples in real time, while the on-chip op amps buffer microphone or sensor outputs before conversion, cutting external component count in compact products. UART and SPI interfaces stream processed data to codecs or wireless modules. With 256KB FLASH there is headroom for calibration tables, multi-profile filter banks, and product-specific tuning. For sample rates in the tens of kHz, the 70 MIPS core provides substantial margin, keeping CPU loading low even with cascaded filter stages.
Recommended
Automotive and Transportation Subsystems
For non-safety-critical automotive subsystems - wiper modules, seat adjusters, pump drivers, LIN-gated actuators - select the DSPIC33EP256MC202T-E/SS variant, which Microchip lists as AEC-Q100 qualified for -40C to +125C operation. Its LINbus and IrDA-capable UART integrates with in-vehicle networks, the QEI reads motor position feedback, and the MCPWM drives brushed or BLDC actuators through external gate drivers. The 60 MIPS rating of the -E part still delivers ample DSP headroom for current-loop control. Designers should apply Microchip's functional-safety and AEC-Q100 qualification documentation during design review, and prefer authorized distribution to maintain automotive traceability.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33EP256MC202T-I/SS — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33EP256MC202T-E/SS | DSPIC33EP256MC202-I/SS | DSPIC33EP128MC202-I/SS | DSPIC33EP64MC202-I/SS | DSPIC33EP128MC502-I/SS |
|---|---|---|---|---|---|---|
| Package | 28-SSOP (5.30 mm) | 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 | 70 MIPS | 60 MIPS | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS |
| FLASH Program Memory | 256 KB (85.5K x 24) | 256 KB | 256 KB | 128 KB | 64 KB | 128 KB |
| RAM | 16K x 16 (32 KB) | 16K x 16 | 16K x 16 | 16K x 16 | 16K x 16 | 53K x 16 |
| Operating Temperature | -40C to +85C | -40C to +125C (AEC-Q100) | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
| Supply Voltage | 3 V to 3.6 V | 3 V to 3.6 V | 3 V to 3.6 V | 3 V to 3.6 V | 3 V to 3.6 V | 3 V to 3.6 V |
| Key Peripherals | MCPWM, QEI, op amps, comparators, 10/12-bit ADC | MCPWM, QEI, op amps, comparators, ADC | MCPWM, QEI, op amps, comparators, ADC | MCPWM, QEI, op amps, comparators, ADC | MCPWM, QEI, op amps, comparators, ADC | MCPWM, QEI, comparators, ADC |
| Packaging | Tape & Reel (T suffix) | Tape & Reel | Tube / Tray | Tube / Tray | Tube / Tray | Tube / Tray |
Key Differentiators
- Industrial-grade maximum speed (vs DSPIC33EP256MC202T-E/SS)
- Largest program memory in the 28-SSOP drop-in family (vs DSPIC33EP128MC202-I/SS)
- Tape-and-reel volume packaging (vs DSPIC33EP256MC202-I/SS)
Design Notes
Supply the DSPIC33EP256MC202T-I/SS with a single 3.0V to 3.6V rail. The core runs from an internal regulator, so the VCAP/VDDCORE pin must carry the specified stabilization capacitor straight to ground with a short, wide trace - omitting or mis-sizing this capacitor is a leading cause of brown-out resets and erratic core operation. Decouple each VDD pin with 100nF ceramic plus bulk 10uF near the part. Estimated: at 70 MIPS with all peripherals active, expect tens of mA of supply current, so a 200 mA LDO or buck rail is typically sufficient.
Place the 100nF decoupling capacitors within 2-3 mm of the corresponding VDD/VSS pin pairs on the 28-SSOP land pattern and return them to a solid ground pour. Keep the analog traces (ANx inputs feeding the on-chip op amps and 10/12-bit ADC) short and away from the MCPWM gate-drive traces; switch-mode ripple coupling into ADC inputs appears as control-loop noise. Route OSC1/OSC2 crystal traces symmetrically with guard ground if using an external crystal rather than the internal FRC oscillator.
Do not confuse the -I and -E suffixes in production BOMs: the -I part is rated -40C to +85C at 70 MIPS, while the AEC-Q100 -E part is rated to +125C at 60 MIPS - swapping suffixes changes both thermal margin and speed rating. Also remember this is the T (tape-and-reel) suffix: single-sample prototyping is easier with the non-T DSPIC33EP256MC202-I/SS tube packaging. Verify remappable RPx pin assignments against the datasheet pinout table before routing, since digital peripheral pins are software-mapped and easily mis-assigned in early firmware.
When the MCPWM outputs drive long traces to gate drivers, add small series resistors (estimated 22-33 ohm, tune empirically) at the DSC pins to slow edge rates and suppress ringing, keeping the 28-SSOP lead inductance from creating overshoot. Synchronize ADC sampling to the PWM period via the peripheral trigger so current samples land at the midpoint of the PWM on-time, minimizing ripple-induced measurement error in motor-control and digital-power loops.
Compliance Information
RoHS compliant per Microchip current production standards; the -E suffix sibling (DSPIC33EP256MC202T-E/SS) is the AEC-Q100 qualified variant. Confirm REACH and halogen-free status on Microchip's official product compliance page for this exact MPN.
