DSPIC33EP256MC202-H/SS - 70 MIPS 16-bit DSC 256KB Flash | Microchip
MPN: DSPIC33EP256MC202-H/SS ✓ Active| Qty | Unit Price | Extended |
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| 1 | $0 | $0.00 |
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DSPIC33EP256MC202-H/SS Overview
A digital signal controller combines the computational throughput of a digital signal processor with the deterministic control architecture of a microcontroller. In the product hierarchy, the dsPIC33EP256MC202 belongs to Microchip's dsPIC33E family (DSC -> 16-bit embedded controller -> microcontroller unit -> semiconductor), sitting between general-purpose PIC24 microcontrollers and dedicated DSPs. This hybrid architecture lets a single chip close high-speed control loops while running general housekeeping firmware.
Key features of this family include a 70 MIPS dsPIC DSC core with DSP instruction support, a high-speed PWM module engineered for motor control, and advanced analog integration. According to the Microchip family datasheet (document DS70657F), the ADC module is configurable as 10-bit, 1.1 Msps with four sample-and-hold circuits, or 12-bit, 500 ksps with one sample-and-hold, with six analog inputs on 28-pin devices and flexible, independent ADC trigger sources. Up to three op amp/comparators connect directly to the ADC module, with programmable references offering 32 voltage points.
Technically, the dsPIC33EP architecture pairs a 16-bit modified Harvard CPU with a DSP engine providing single-cycle MAC and 40-bit accumulators. The high-resolution PWM with dead-time insertion and fault inputs directly drives three-phase inverters for FOC (field-oriented control), while the on-chip comparators and op amps reduce external analog component count. Communication includes UART, SPI, and I2C peripherals for host links and gate-driver interfacing.
Typical applications include brushless DC and PMSM motor control, digital power supplies and power factor correction, and embedded sensing systems that need simultaneous fast analog acquisition and closed-loop control. The 28-pin SSOP footprint suits compact, cost-sensitive motor drive boards.
Design consideration: supply this controller from a regulated 3V to 3.6V rail, place the VCAP/VDDCORE decoupling capacitor exactly as specified in the datasheet layout guidance, and verify multiple PGECx/PGEDx pairs are wired consistently for ICSP programming.
This page synthesizes cross-reference data, drop-in alternatives, and practical design notes not found on the manufacturer product page alone. Pricing is as of 2026-09-24.
Drop-in alternatives for DSPIC33EP256MC202-H/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 DSPIC33EP256MC202-H/SS (same form factor and footprint) — differing in Package, Core, PWM Module, RAM.
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No drop-in alternatives available for this product.
Request AlternativesDSPIC33EP256MC202-H/SS Maximum Ratings & Electrical Characteristics
| Core Architecture | 16-bit dsPIC DSC with DSP engine |
| Maximum Core Speed | 70 MIPS |
| Program Memory (Flash) | 256 KB |
| Package | 28-pin SSOP (SS), 5.3 mm body |
| Supply Voltage Range | 3 V to 3.6 V |
| ADC Resolution / Speed | 10-bit 1.1 Msps (4 S&H) or 12-bit 500 ksps (1 S&H) |
| Analog Inputs (28-pin devices) | 6 |
| Op Amps / Comparators | Up to 3, direct ADC connection |
| PWM Module | High-Speed PWM for motor control |
| Communication Interfaces | UART, SPI, I2C |
| Programming Interface | ICSP via PGECx/PGEDx pairs |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
DSPIC33EP256MC202-H/SS 28-pin ssop (ss), 5.3 mm body Pin Configuration Guide
Pin configuration for DSPIC33EP256MC202-H/SS (28-pin ssop (ss), 5.3 mm body 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-H/SS.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33EP256MC202-H/SS is suitable for 6 applications: Brushless DC / PMSM Motor Control, Digital Power Supplies and PFC, Sensor Signal Acquisition, Industrial Automation and Robotics, Automotive Auxiliary Motor Systems, Audio and Signal Processing.
Brushless DC / PMSM Motor Control
The dsPIC33EP256MC202-H/SS is purpose-built for precision motor control: its 70 MIPS core with DSP engine executes field-oriented control (FOC) of PMSM and BLDC motors at typical 10-20 kHz current-loop rates with margin to spare. The high-speed PWM module generates complementary output pairs with programmable dead-time insertion and cycle-by-cycle current limiting via fault inputs, directly driving three-phase inverter gate drivers. According to the family datasheet, the ADC's four sample-and-hold circuits at 1.1 Msps sample phase currents synchronously with PWM edges, eliminating switching-noise artifacts. The on-chip op amps amplify shunt currents before ADC conversion, removing external amplifier ICs. Place the controller on the same board as the gate drivers with analog grounds star-connected at the shunt resistors for best measurement accuracy.
Recommended
Digital Power Supplies and PFC
In switch-mode power supplies and power factor correction stages, this DSC closes voltage and current loops digitally with deterministic latency. The 12-bit, 500 ksps ADC mode provides the resolution needed for output voltage regulation while the 10-bit, 1.1 Msps mode with four sample-and-hold circuits suits fast inner current loops. Independent, flexible ADC trigger sources let each control loop sample at its own PWM-defined instant, and the high-speed PWM supports phase-shifted and interleaved topologies with hardware fault shutdown for overcurrent events. With 256 KB of Flash there is room for USB-C PD stacks, communication protocols, and diagnostics alongside the control code. Estimated power dissipation for the controller itself is under 100 mW at 70 MIPS from a 3.3V rail, so no heatsinking is required - but keep the VCAP/VDDCORE capacitor close to the pin per Microchip layout guidance.
Recommended
Sensor Signal Acquisition
The MC202's advanced analog subsystem - up to three op amp/comparators with direct ADC connection and programmable references with 32 voltage points - makes it a compact sensing hub. A single chip can amplify, condition, and digitize signals from current, pressure, or position sensors at up to 1.1 Msps (10-bit), then run digital filtering using the DSP engine's single-cycle MAC operations. Six analog inputs on the 28-pin device cover multi-channel systems such as three-phase current plus DC-bus voltage measurement. The comparator channels double as hardware thresholds for alarm and shutdown logic independent of software latency. UART, SPI, and I2C interfaces stream results to a host or cloud gateway. Use the 12-bit 500 ksps mode when resolution matters more than rate, and route analog inputs away from PWM traces on the PCB.
Recommended
Industrial Automation and Robotics
In factory automation nodes, servo drives, and robotic joints, the 70 MIPS dsPIC DSC core provides the real-time determinism required for coordinated motion while 256 KB of Flash hosts protocol stacks such as UART-based fieldbus gateways. The high-speed PWM drives servo motors with FOC, the comparators provide hardware-level protection, and the multiple timers support quadrature-encoder-style edge counting and commutation timing. Communication peripherals (UART, SPI, I2C) interface encoders, touch panels, and higher-level PLC controllers. The 28-pin SSOP package keeps drive electronics compact for integration into joint housings. For ICSP field updates, wire one full PGECx/PGEDx pair to a service connector - per the programming support notes, clock and data must come from the same pair for in-system flashing.
Recommended
Automotive Auxiliary Motor Systems
For automotive applications such as pumps, fans, actuators, and HVAC blowers, the pin-compatible AEC-Q100 qualified variant DSPIC33EP256MC202-E/SS extends this family into vehicle environments. The same 28-pin SSOP footprint, 256 KB Flash, 70 MIPS core, and high-speed PWM apply, so a design validated on the -H/SS can migrate to the qualified -E/SS grade with no PCB rework. The 12-bit ADC and on-chip op amps handle current sensing in 3V-3.6V-supplied control boards, while fault-protected PWM outputs guard against load faults. Typical use is driving brushless blower or coolant-pump motors with sensorless FOC, using the comparators for overcurrent shutdown. Verify the full extended temperature specification in the family datasheet DS70000657J before qualification sign-off.
Recommended
Audio and Signal Processing
The integrated DSP engine - single-cycle MAC, 40-bit accumulators, and hardware modulo addressing - lets the dsPIC33EP256MC202-H/SS run audio filters, effects, and analysis routines at 70 MIPS. Audio-rate tasks such as biquad IIR filtering, active crossover processing, or envelope detection fit comfortably within the core budget, while the 12-bit ADC digitizes microphone or line-level inputs (with external preamp/bias circuits) and PWM outputs can implement class-D modulation. The 256 KB Flash accommodates lookup tables, filter coefficient sets, and communication firmware. SPI supports external high-resolution audio DACs for output stages where PWM quality is insufficient. This makes the part attractive in cost-sensitive powered speakers, intercoms, and industrial acoustic monitoring nodes where a general DSP would be over-budget.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33EP256MC202-H/SS — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33EP256MC202-I/SS | DSPIC33EP256MC202-E/SS | DSPIC33EP128MC202-I/SS | DSPIC33EP64MC202-I/SS |
|---|---|---|---|---|---|
| Package | 28-SSOP (SS) | 28-SSOP (SS) - same | 28-SSOP (SS) - same | 28-SSOP (SS) - same | 28-SSOP (SS) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core Speed | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS |
| Flash Program Memory | 256 KB | 256 KB | 256 KB | 128 KB | 64 KB |
| 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 |
| AEC-Q100 Qualified | No | No | Yes | No | No |
| ADC Configuration | 10-bit 1.1 Msps (4 S&H) / 12-bit 500 ksps | 10-bit 1.1 Msps / 12-bit 500 ksps | 10-bit 1.1 Msps / 12-bit 500 ksps | 10-bit 1.1 Msps / 12-bit 500 ksps | 10-bit 1.1 Msps / 12-bit 500 ksps |
Key Differentiators
- Maximum Flash in the 28-pin SSOP family member (vs DSPIC33EP128MC202-I/SS)
- Commercial-grade cost efficiency (vs DSPIC33EP256MC202-E/SS)
- Fastest ADC throughput option for current loops (vs DSPIC33EP64MC202-I/SS)
Design Notes
Supply the controller from a clean 3.0V to 3.6V rail; the core regulator output on the VCAP/VDDCORE pin must be decoupled with the exact capacitance (typically a low-ESR ceramic, around 10 uF) specified in the family datasheet DS70000657J layout section. Do not place external loads on VDDCORE. Decouple every VDD pin with 0.1 uF ceramics placed within 2 mm of the pin, and keep all VSS pins connected - the NSDSP programming notes emphasize all VDD/VSS pins must be connected for reliable ICSP.
The device offers multiple PGECx/PGEDx pairs for ICSP. Any pair may be used, but ICSPCLK and ICSPDAT must come from the SAME pair (for example PGEC2 with PGED2), and this pair must be routed to your programming header. Mixing clock and data from different pairs is the most common bring-up failure on this family. Also verify MCLR is pulled up through the recommended resistor (approximately 10k) and never left floating during power-up.
In motor-control layouts, keep the six analog input traces routed on the quiet side of the board away from high-speed PWM nets and gate-driver switching loops. Sense shunts with Kelvin connections directly to the analog inputs, and synchronize ADC sampling to PWM edges using the ADC trigger sources rather than free-running sampling to avoid capturing switching transients. Use a solid ground plane with a single analog/digital partition under the controller.
Compliance Information
Microchip standard parts in this family are RoHS compliant and lead-free per product listings; the AEC-Q100 qualified alternative is DSPIC33EP256MC202-E/SS. REACH and conflict-minerals status not stated in provided data.
