DSPIC33EP256MC202T-I/SO - 16-bit 70 MIPS DSC, 256KB Flash | Microchip
MPN: DSPIC33EP256MC202T-I/SO ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $5.1 | $5.10 |
| 10 | $4.62 | $46.20 |
| 100 | $4.15 | $415.00 |
| 500 | $3.78 | $1,890.00 |
| 1,000 | $3.42 | $3,420.00 |
DSPIC33EP256MC202T-I/SO Overview
A digital signal controller combines the computational architecture of a microcontroller with DSP capability, sitting in the product hierarchy between a general-purpose MCU and a dedicated DSP. The dsPIC33EP family integrates a DSP engine, high-speed PWM peripherals, and advanced analog, allowing a single chip to execute both control-loop and signal-processing tasks in motor drives and power conversion systems.
Key features include the 70 MIPS 16-bit core, 256KB self-programming FLASH with ECC-class endurance, 16KB of on-chip SRAM, and connectivity peripherals spanning I2C, SPI, UART/USART, IrDA, LINbus, and QEI (quadrature encoder interface) for motor position feedback. Multiple 10-bit/12-bit ADC inputs support simultaneous analog sampling for current and voltage sensing.
Architecturally, the dsPIC33E core pairs a 16-bit MCU instruction set with DSP multiply-accumulate and barrel-shifter resources, enabling deterministic execution of PID and field-oriented control (FOC) loops. The high-resolution PWM modules are targeted at inverter, BLDC, PMSM, and power-factor-correction stages where precise dead-time control matters.
Typical applications include precision motor control (BLDC/PMSM drives, servo and stepper controllers), digital power supplies and solar inverters, and embedded industrial control nodes requiring DSP-class math without a separate DSP chip.
Design consideration: the 28-SOIC package exposes limited I/O, so plan pin multiplexing (PWM, QEI, communication ports) early, and follow Microchip's clock and power-supply decoupling guidance in the datasheet.
This page synthesizes distributor pricing tiers, drop-in family alternatives, and practical design notes beyond the raw manufacturer datasheet.
Drop-in alternatives for DSPIC33EP256MC202T-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 DSPIC33EP256MC202T-I/SO (same form factor and footprint) — differing in Package, Packaging, Core, Comparators, Operating Temperature.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33EP128MC202-I/SO
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$3.92 / Unit
View Datasheet →DSPIC33EP64MC202-I/SO
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$0.13 / Unit
View Datasheet →DSPIC33EP32MC202-I/SO
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$3.46 / Unit
View Datasheet →DSPIC33EP128GP502-I/SO
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP128MC502-I/SS
✅ Drop-In✓ In Stock
$2.55 / Unit
View Datasheet →DSPIC33EP256MC202T-I/SO Maximum Ratings & Electrical Characteristics
| Core Processor | dsPIC33E (16-bit DSC core) |
| Core Size | 16-bit |
| Speed | 70 MIPs |
| Program Memory Type | FLASH |
| Program Memory Size | 256KB (85.5K x 24) |
| RAM Size | 16KB |
| Connectivity | I2C, IrDA, LINbus, QEI, SPI, UART/USART |
| ADC Resolution | 10-bit / 12-bit |
| Package | 28-SOIC (0.295 in, 7.50 mm width) |
| Mounting Type | Surface Mount |
| Operating Temperature | -40C to +85C (I grade) |
| Supplier Device Package | 28-SOIC |
| Product Family | dsPIC 33EP |
| Product Type | Digital Signal Controller (DSC) / Microcontroller IC |
| Packaging | Tape & Reel (T suffix) |
DSPIC33EP256MC202T-I/SO 28-soic Pin Configuration Guide
Pin configuration for DSPIC33EP256MC202T-I/SO (28-soic 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/SO.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33EP256MC202T-I/SO is suitable for 6 applications: BLDC/PMSM Motor Control, Digital Power Supplies and Inverters, Industrial Automation Nodes, Embedded DSP Signal Processing, Automotive-adjacent and E-mobility Subsystems, IoT Edge Sensing and Smart Devices.
BLDC/PMSM Motor Control
The DSPIC33EP256MC202T-I/SO fits BLDC and PMSM drives because its 70 MIPS dsPIC33E core executes field-oriented control (FOC) loops with headroom for speed ramps and protection logic, while the QEI peripheral decodes quadrature encoder feedback for rotor position. The high-speed PWM modules generate complementary three-phase outputs with programmable dead time, and the 12-bit ADC samples phase currents for closed-loop torque control. Placed as the single controller in a 28-SOIC footprint, it eliminates a separate DSP chip; the trade-off versus larger 64-pin family members is reduced I/O, so pin multiplexing of PWM, encoder, and communication pins must be planned early in the schematic.
Recommended
Digital Power Supplies and Inverters
In digital power supplies, solar micro-inverters, and power-factor-correction stages, the DSPIC33EP256MC202T-I/SO provides the deterministic control needed for voltage-mode and current-mode loops. The 70 MIPS core closes control loops at tens of kHz with DSP multiply-accumulate throughput, the 12-bit ADC monitors output voltage and inductor current, and the high-speed PWM supports phase-shifted and complementary topologies with fine duty-cycle resolution. Firmware for soft-start, fault handling, and telemetry fits comfortably in the 256KB FLASH with the 16KB RAM supporting buffering for serial telemetry. Because the DSC adds no switching noise of its own, switching-frequency EMI must be managed in the gate-driver layout rather than the controller domain.
Recommended
Industrial Automation Nodes
For industrial automation nodes such as sensor hubs, actuators, and small PLC I/O modules, the DSPIC33EP256MC202T-I/SO combines a 16-bit 70 MIPS processing core with the connectivity set factory equipment expects: UART/USART for MODBUS-style links, SPI and I2C for local sensors, and LINbus for cost-sensitive field buses. The industrial -40C to +85C temperature rating suits enclosures with limited cooling, and the 256KB FLASH retains margin for protocol stacks plus field firmware updates. Running control logic and communications on one 28-SOIC device simplifies BOM and certification; the trade-off is a single-controller fault domain, so watchdog and brown-out features should be enabled in configuration words.
Recommended
Embedded DSP Signal Processing
The DSPIC33EP256MC202T-I/SO serves embedded DSP tasks - audio preprocessing, sensor fusion, digital filtering - where a full DSP is oversized. The dsPIC33E core provides single-cycle MAC, hardware divide, and barrel-shift operations at 70 MIPS, letting FIR/IIR filters and FFT-based analysis run deterministically without an RTOS on the 16KB RAM. The 12-bit ADC streams analog inputs for condition-monitoring and vibration-sensing products, while UART or SPI exports processed results. With 256KB of FLASH there is room for coefficient tables and multi-mode firmware. For designs needing heavier floating-point throughput, a Cortex-M4F-class device is the better architectural fit; for fixed-point 16-bit work, this DSC minimizes cost and power.
Recommended
Automotive-adjacent and E-mobility Subsystems
In e-mobility subsystems - e-bike controllers, light-electric-vehicle pumps and fans, auxiliary drives - the DSPIC33EP256MC202T-I/SO delivers motor-control-grade PWM and QEI encoder input in a compact 28-SOIC. The 70 MIPS core closes FOC current loops fast enough for traction-grade feel, and the 256KB FLASH stores safety routines, fault logs, and communication stacks (LINbus, UART) used in vehicle networks. Designers should validate the I-grade -40C to +85C thermal envelope against the actual enclosure and apply derating for junction temperature, since automotive AEC-Q100-qualified variants are separate ordering codes. The trade-off versus 44/64-pin parts is I/O count, which favors simple single-motor subsystems.
Recommended
IoT Edge Sensing and Smart Devices
For IoT edge devices that sense, filter, and relay data, the DSPIC33EP256MC202T-I/SO offers DSP-class preprocessing at microcontroller cost. Sensor channels feed the 12-bit ADC; the 70 MIPS core runs calibration, filtering, and threshold logic; and UART/SPI/I2C links hand data to a wireless module for upload. The industrial temperature range and 16KB RAM suit always-on monitoring products, while the 256KB FLASH accommodates OTA-style firmware slots. Because the DSC preprocesses locally, only compact results cross the radio link, cutting network energy. Designers should budget the analog front-end around the ADC input structure documented in the datasheet and enable the internal oscillator options for low-power standby between samples.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33EP256MC202T-I/SO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33EP128MC202-I/SO | DSPIC33EP64MC202-I/SO | DSPIC33EP32MC202-I/SO | DSPIC33EP128GP502-I/SO |
|---|---|---|---|---|---|
| Package | 28-SOIC (7.50 mm) | 28-SOIC (7.50 mm) - same | 28-SOIC (7.50 mm) - same | 28-SOIC (7.50 mm) - same | 28-SOIC (7.50 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core / Speed | dsPIC33E 16-bit, 70 MIPs | dsPIC33E 16-bit, 70 MIPs | dsPIC33E 16-bit, 70 MIPs | dsPIC33E 16-bit, 70 MIPs | dsPIC33E 16-bit, 70 MIPs |
| FLASH Program Memory | 256KB (85.5K x 24) | 128KB | 64KB | 32KB | 128KB |
| Peripheral Family (PWM focus) | MC (motor control) - high-speed PWM | MC - high-speed PWM | MC - high-speed PWM | MC - high-speed PWM | GP - general-purpose peripheral set |
| Connectivity | I2C, IrDA, LINbus, QEI, SPI, UART/USART | I2C, SPI, UART/USART, QEI | I2C, SPI, UART/USART, QEI | I2C, SPI, UART/USART, QEI | I2C, SPI, UART/USART |
| Operating Temperature Grade | -40C to +85C (I) | -40C to +85C (I) | -40C to +85C (I) | -40C to +85C (I) | -40C to +85C (I) |
| Relative Cost Position | Premium (largest FLASH in family) | Lower cost than 256KB version | Lower cost | Lowest cost in family | Comparable to 128KB MC variant |
Key Differentiators
- Largest FLASH in the 28-pin MC family column (vs DSPIC33EP128MC202-I/SO)
- Motor-control (MC) peripheral set rather than GP (vs DSPIC33EP128GP502-I/SO)
- Tape-and-reel (T suffix) for production automation (vs DSPIC33EP256MC202T-I/SS (SSOP package))
Design Notes
Provide a clean 3.3V rail with local decoupling: a 0.1uF ceramic capacitor at each VDD pin pair plus one bulk 4.7uF-10uF capacitor near the device, per Microchip's dsPIC33E power-supply recommendations in the family datasheet. dsPIC33E cores are sensitive to supply droop during FLASH write operations, so avoid sharing the regulator with high-draw loads such as gate drivers without local bulk storage.
In 28-SOIC motor-control designs, keep PWM outputs to gate drivers short and route them away from the ADC sense lines feeding phase-current measurements. The 12-bit ADC accuracy degrades if switching-node transients couple into analog inputs; use dedicated analog ground returns and RC anti-alias filters on current-sense channels. Keep the MCLR pin routed to a programming header for ICSP in-circuit development.
The 28-pin package multiplexes most functions, so finalize the pin-mux map before PCB layout: QEI, UART, SPI, and PWM assignments compete for the same physical pins on the 202 pin-count variant. Also confirm the configuration-word settings (oscillator mode, watchdog, brown-out) match your hardware, since wrong oscillator configuration is the most common cause of a dsPIC33EP board failing to start.
Estimated: at typical 3.3V operation with modest I/O loading, junction dissipation of a dsPIC33EP202-class DSC stays below a few hundred milliwatts; a standard 28-SOIC land pattern with nominal copper is normally sufficient. Verify against the thermal parameters in the manufacturer datasheet when driving many heavily loaded outputs or running at maximum clock in a hot enclosure approaching the +85C ambient limit.
Compliance Information
Compliance data was not present in the provided distributor listings. Verify RoHS/REACH certificates on the Microchip product page for this exact ordering code before design-in.
