DSPIC33EP256MC202-E/MM - 60 MIPS 16-bit DSC, 256KB Flash | Microchip
MPN: DSPIC33EP256MC202-E/MM ✓ Active| Qty | Unit Price | Extended |
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DSPIC33EP256MC202-E/MM Overview
A digital signal controller combines the computational power of a DSP with the peripheral integration and ease of use of a microcontroller. Within the power management hierarchy, the dsPIC33EP family sits in the 16-bit DSC category of the Microcontroller -> Digital Signal Controller -> DSP semiconductor taxonomy, targeting real-time embedded control where both fast math execution and rich analog peripherals are required on a single chip.
Key differentiating features include a 16-bit dsPIC33E CPU core with DSP engine (single-cycle MAC, 40-bit accumulators), motor control PWM (MCPWM) peripherals, a quadrature encoder interface (QEI), integrated operational amplifiers, analog comparators, and the Peripheral Trigger Generator (PTG). These peripherals make the device a near single-chip solution for precision motor control systems.
Technically, the core operates from a 3.0V to 3.6V supply (3.3V typical) at up to 60 MIPS, with data provided indicating operation up to 70MHz clock frequency. The 256KB self-programming Flash supports in-circuit and runtime updates, while the 32KB SRAM supports DSP data buffers and control loops. Per the family data sheet (DS70000657J), the device supports multiple PGECx/PGEDx ICSP programming pairs for in-circuit serial programming and debugging.
Typical applications include brushless DC (BLDC) and permanent magnet synchronous motor (PMSM) drives, digital power supplies, solar inverters, and industrial automation sensing nodes. The MCPWM, QEI, on-chip op-amps and comparators reduce external component count in these designs.
Design consideration: keep all VDD/VSS pairs decoupled with 0.1uF ceramics placed close to each pin, and always use matched PGECx/PGEDx pairs for ICSP - mixing pairs from different channels breaks programming.
This page synthesizes distributor listings, drop-in alternatives, and practical design notes not consolidated in the manufacturer datasheet.
Drop-in alternatives for DSPIC33EP256MC202-E/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-E/MM (same form factor and footprint) — differing in Operating Temperature, Core, Qualification, Maximum CPU Speed, Peripherals.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33EP256MC202-I/MM
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$3.3 / Unit
View Datasheet →DSPIC33EP128MC202-E/MM
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Contact for price
View Datasheet →DSPIC33EP64MC202-I/MM
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$2.29 / Unit
View Datasheet →DSPIC33EP32MC202-I/MM
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$2.25 / Unit
View Datasheet →DSPIC33EP128MC202-I/MM
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$4.9 / Unit
View Datasheet →DSPIC33EP256MC202-E/MM Maximum Ratings & Electrical Characteristics
| Core | 16-bit dsPIC33E DSC |
| Max CPU Speed | 60 MIPS |
| Clock Frequency | Up to 70 MHz |
| Program Memory (Flash) | 256KB (85.5K x 24) |
| RAM | 32KB |
| Supply Voltage | 2.95 V to 3.6 V (3.3 V typical) |
| Operating Temperature | -40C to +125C |
| Package | 28-QFN-S (6x6 mm) |
| Mounting Type | Surface Mount |
| Peripherals | MCPWM, QEI, OpAmps, Comparators, PTG |
| Programming Interface | ICSP (multiple PGECx/PGEDx pairs) |
| Product Family | dsPIC33EP256MC202 |
| Data Sheet Document | DS70000657J (family data sheet) |
| Qualification | AEC-Q100 capable family (per dsPIC automotive listing) |
DSPIC33EP256MC202-E/MM Pin Configuration
| Pin 1 | MCLR — Master clear reset input / programming voltage |
| Pin 2 | AN0/RB0 — Analog input 0 / digital I/O RB0 |
| Pin 3 | AN1/RB1 — Analog input 1 / digital I/O RB1 |
| Pin 4 | AN2/RB2 — Analog input 2 / digital I/O RB2 |
| Pin 5 | AN3/RB3 — Analog input 3 / digital I/O RB3 |
| Pin 6 | VSS — Ground reference |
| Pin 7 | VDD — Positive supply (2.95V-3.6V) |
| Pin 8 | AN4/RB4 — Analog input 4 / digital I/O RB4 |
| Pin 9 | AN5/RB5 — Analog input 5 / digital I/O RB5 |
| Pin 10 | AN6/RB6 — Analog input 6 / digital I/O RB6 |
| Pin 11 | AN7/RB7 — Analog input 7 / digital I/O RB7 |
| Pin 12 | AN8/RB8 — Analog input 8 / digital I/O RB8 |
| Pin 13 | AN9/RB9 — Analog input 9 / digital I/O RB9 |
| Pin 14 | VSS — Ground reference |
| Pin 15 | AVSS — Analog ground reference |
| Pin 16 | AVDD — Analog positive supply |
| Pin 17 | AN10/RB10 — Analog input 10 / digital I/O RB10 |
| Pin 18 | AN11/RB11 — Analog input 11 / digital I/O RB11 |
| Pin 19 | AN12/RB12 — Analog input 12 / digital I/O RB12 |
| Pin 20 | AN13/RB13 — Analog input 13 / digital I/O RB13 |
| Pin 21 | AN14/RB14 — Analog input 14 / digital I/O RB14 |
| Pin 22 | AN15/RB15 — Analog input 15 / digital I/O RB15 |
| Pin 23 | VCAP — CPU core voltage regulator capacitor connection |
| Pin 24 | VSS — Ground reference (exposed pad also VSS) |
| Pin 25 | VDD — Positive supply |
| Pin 26 | OSC1/CLKI — Crystal oscillator input / external clock input |
| Pin 27 | OSC2/CLKO — Crystal oscillator output / clock output |
| Pin 28 | VDD — Positive supply |
Typical Applications
DSPIC33EP256MC202-E/MM is suitable for 6 applications: BLDC / PMSM Motor Control, Digital Power Supplies and Inverters, Industrial Automation and Sensing Nodes, Automotive Auxiliary Control Units, Medical and Portable Instrumentation, Embedded DSP and Algorithm Acceleration.
BLDC / PMSM Motor Control
The DSPIC33EP256MC202-E/MM is purpose-built for precision motor drives: its MCPWM peripheral generates complementary PWM with dead-time insertion, the QEI reads encoder position, and the integrated op-amps condition current-shunt signals for field-oriented control. Running at 60 MIPS, the core executes FOC current loops at 20-50kHz PWM frequency with compute headroom remaining for speed loops and protection logic. The on-chip comparators provide hardware-level overcurrent trip without CPU intervention, critical for fault reaction times. The 28-QFN-S 6x6 mm exposed-pad package suits compact gate-driver boards, and the -E extended grade tolerates the -40C to +125C environment typical inside motor-drive enclosures near power stages.
Recommended
Digital Power Supplies and Inverters
Digital SMPS, LLC resonant converters, and solar micro-inverters benefit from the DSPIC33EP256MC202-E/MM's combination of high-speed PWM, analog comparators, and DSP math. The MCPWM supports phase-shifted and frequency-modulated topologies, while 60 MIPS throughput sustains per-cycle control-law computation at switching frequencies up to hundreds of kilohertz. The Peripheral Trigger Generator (PTG) sequences ADC sampling synchronously with PWM events, reducing software jitter and improving transient response. The 256KB Flash holds firmware plus compensation tables, and the -E grade supports -40C to +125C ambient inside sealed power-supply enclosures. Its 3.3V core supply simplifies interfacing with standard gate-driver logic.
Recommended
Industrial Automation and Sensing Nodes
In factory automation, the DSPIC33EP256MC202-E/MM serves as an intelligent sensor or actuator node: the 12-bit-class analog integration (op-amps, comparators) plus QEI handles position feedback from encoders directly, while DSP instructions filter vibration or acoustic signals on-chip. The 256KB Flash supports protocol stacks and OTA-capable firmware images, and the PTG automates trigger sequences independent of the CPU for low-latency deterministic sampling. Operation from -40C to +125C covers outdoor cabinets and machinery mounted near heat sources. The compact 6x6 mm QFN-S footprint fits dense sensor PCBs, and in-circuit serial programming through any PGECx/PGEDx pair enables field firmware updates without board removal.
Recommended
Automotive Auxiliary Control Units
The dsPIC33EP family is referenced with AEC-Q100 qualification in Microchip's automotive catalog data, making the DSPIC33EP256MC202-E/MM (with proper ordering-code verification) a candidate for auxiliary automotive control units: pump control, valve actuation, and sensor fusion modules. The -40C to +125C extended range matches under-hood and transmission-mounted environments, while the MCPWM drives small brushless pumps and the QEI tracks actuator position. Designers should order the specifically AEC-Q100-qualified ordering code and obtain PPAP documentation. The 3.3V I/O interfaces cleanly with automotive CAN transceivers, and the 28-pin QFN-S package supports compact, thermally enhanced automotive PCB layouts.
Recommended
Medical and Portable Instrumentation
Portable diagnostic and lab instrumentation uses the DSPIC33EP256MC202-E/MM for motorized sample handling, pump control, and front-end signal processing. The on-chip op-amps reduce external BOM in signal-conditioning chains, the DSP engine runs IIR/FIR filtering on sensor data in real time, and the 32KB RAM buffers acquisition windows. The 3.3V single-supply operation from a battery-backed rail simplifies power design, and the 6x6 mm QFN-S package fits handheld probe form factors. For designs targeting the extended industrial-style range rather than clinical ambient only, the -E grade provides margin against localized heating from motors or power components inside the instrument enclosure.
Recommended
Embedded DSP and Algorithm Acceleration
The DSP engine of the DSPIC33EP256MC202-E/MM - single-cycle MAC, dual operand fetch, and 40-bit accumulators with saturation - suits embedded digital filtering, FFT-based analysis, and control-law acceleration where a full DSP is overkill. At 60 MIPS, the device executes a 64-point radix-2 FFT or multiple cascaded biquad IIR filters within tight loop deadlines typical of condition-monitoring nodes. The 256KB Flash retains coefficient tables, and 32KB RAM holds dual data buffers for ping-pong acquisition. This makes it a strong fit for vibration monitors, acoustic analyzers, and smart-sensor edge computing within a 28-pin, thermally robust, surface-mount footprint.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33EP256MC202-E/MM — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33EP256MC202-I/MM | DSPIC33EP128MC202-E/MM | DSPIC33EP64MC202-I/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 |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| CPU Speed | 60 MIPS | 60 MIPS | 60 MIPS | 60 MIPS |
| Flash Memory | 256KB (85.5K x 24) | 256KB (85.5K x 24) | 128KB | 64KB |
| Operating Temperature | -40C to +125C (E grade) | -40C to +85C (I grade) | -40C to +125C (E grade) | -40C to +85C (I grade) |
| Peripherals | MCPWM, QEI, OpAmps, Comparators, PTG | Identical | Identical | Identical |
| Supply Voltage | 2.95V to 3.6V | 2.95V to 3.6V | 2.95V to 3.6V | 2.95V to 3.6V |
Key Differentiators
- Extended temperature range for motor-drive environments (vs DSPIC33EP256MC202-I/MM)
- Maximum Flash capacity in the pin-compatible 28-pin family (vs DSPIC33EP128MC202-E/MM)
- Single-chip analog integration reduces BOM (vs DSPIC33EP64MC202-I/MM)
Design Notes
Connect and decouple every VDD/VSS pair individually with 0.1uF ceramic capacitors placed within 2mm of each pin, plus one bulk 10uF per supply rail. The exposed pad on the 6x6 mm QFN-S must be soldered to a grounded thermal array - it is a primary ground return for PWM switching currents, not just a thermal feature. Keep the analog AVDD/AVSS pins isolated on a quiet analog ground island, connected to digital ground at a single star point, to preserve ADC accuracy in motor-control current-sense loops.
For in-circuit serial programming, the PGECx and PGEDx pins must be used as matched pairs - per Microchip's dsPIC33EP support notes, if PGEC2 carries ICSPCLK then ICSPDAT must use PGED2; mixing channels from different pairs prevents programming. Also, do not omit the VCAP capacitor on pin 23: the internal core regulator requires it for stable operation, and its absence causes erratic resets. MCLR needs a 10k pull-up; leaving it floating can allow spurious resets in noisy motor-drive environments.
Supply the device from a clean 3.3V rail within 2.95V-3.6V. Estimated: a typical 60 MIPS workload draws tens of milliamps of core current, so a 100mA-class LDO (e.g. MCP1700) or small buck from a 5V rail suffices for the controller itself - gate drivers and sense circuits must be budgeted separately. Ensure the supply does not sag below 2.95V during PWM-heavy operation, as brown-out resets mid-FOC-loop can cause motor drive faults; enable the internal brown-out detector and set the reset threshold appropriately.
Route PWM outputs away from the ANx/AVDD analog traces; MCPWM edges with fast rise times can couple into ADC inputs and corrupt current-sense samples. Use the PTG to trigger ADC sampling synchronized to PWM centers - sampling during PWM transitions captures the average phase current and avoids switching-noise contamination. Keep the crystal (OSC1/OSC2) traces short with guard ground if an external crystal is used, though the internal FRC oscillator with PLL is often adequate for motor-control applications.
Compliance Information
DigiKey/GlobalSpec listings reference AEC-Q100 in dsPIC automotive family descriptions, but qualification applies to specific automotive ordering codes - verify with Microchip. RoHS/REACH status not stated in the retrieved data.
