DSPIC33EP512MC202-E/SO - 70 MIPS 16-bit DSC | Microchip
MPN: DSPIC33EP512MC202-E/SO ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $5.42 | $5.42 |
| 10 | $4.94 | $49.40 |
| 100 | $4.35 | $435.00 |
| 500 | $3.92 | $1,960.00 |
| 1,000 | $3.55 | $3,550.00 |
DSPIC33EP512MC202-E/SO Overview
A digital signal controller combines the computational architecture of a digital signal processor with the peripheral set and ease of use of a microcontroller. In the system hierarchy, the dsPIC33EP512MC202 sits within Microchip's dsPIC33 family of DSCs, which in turn belongs to the broader class of 16-bit embedded microcontrollers and semiconductor integrated circuits. DSCs are distinguished from general-purpose MCUs by integrated DSP engine instructions, hardware multiply-accumulate units, and motor-control-oriented peripherals.
Key features of this part include the 70 MIPS dsPIC DSC core with DSP instruction support, 512 KB of on-chip Flash (24-bit program memory width) and 48 KB of SRAM, a multi-phase motor control PWM (MCPWM) module, and a quadrature encoder interface (QEI) for closed-loop servo feedback. The -E suffix denotes the extended automotive-relevant temperature range of -40C to +125C, suitable for harsh industrial and underhood environments.
Architecturally, the device uses a modified Harvard bus structure with a multiple internal bus architecture, separating program and data paths so instruction fetch and data access overlap for deterministic DSP throughput. The high-speed PWM supports complementary outputs, dead-time insertion, and fault protection, which are essential for field-oriented control of brushless DC and permanent-magnet synchronous motors.
Typical applications include precision sensorless FOC motor drives, industrial power conversion such as solar inverters and digital UPS systems, and embedded control in HVAC compressors, e-bikes, and servo amplifiers. The MCHV-2 motor-control development board from Microchip supports mounting a 28-pin SOIC dsPIC33 DSC directly for rapid prototyping.
When designing with this controller, budget the peripheral pin mapping (PPS) assignments carefully on the limited 28-pin SOIC footprint, and provide a stable VDDCORE decoupling via the VCAP pin per the manufacturer datasheet.
This page synthesizes verified distributor data, drop-in alternatives, pricing context, and practical design notes not found in the manufacturer datasheet alone, giving engineers a single citable reference for the DSPIC33EP512MC202-E/SO.
Drop-in alternatives for DSPIC33EP512MC202-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 DSPIC33EP512MC202-E/SO (same form factor and footprint) — differing in Package, Operating Temperature, Quadrature Encoder Interface, Core, Core Architecture.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33EP512MC202-I/SO
✅ Drop-In✓ In Stock
$3.72 / Unit
View Datasheet →DSPIC33EP256MC202-H/SO
✅ Drop-In✓ In Stock
$3.51 / Unit
View Datasheet →DSPIC33EP512MC202-E/SO Maximum Ratings & Electrical Characteristics
| Core Architecture | 16-bit dsPIC DSC core |
| Maximum CPU Speed | 70 MIPS |
| Program Memory (Flash) | 512 KB |
| Program Memory Width | 24-bit |
| SRAM | 48 KB |
| Supply Voltage Range | 3.0 V to 3.6 V |
| Operating Temperature | -40C to +125C |
| Package | 28-SOIC (0.295 in, 7.50 mm width) |
| Mounting Type | Surface Mount |
| Motor Control PWM | MCPWM module |
| Quadrature Encoder Interface | QEI |
| Bus Architecture | Multiple internal bus (modified Harvard) |
| RoHS Status | RoHS3 Compliant |
DSPIC33EP512MC202-E/SO Pin Configuration
| Pin 1 | MCLR — Master clear reset input, active low (programming voltage pin) |
| Pin 2 | AN0/VREF+/RB0 — Analog input 0 / ADC positive reference / port B0 |
| Pin 3 | AN1/VREF-/RB1 — Analog input 1 / ADC negative reference / port B1 |
| Pin 4 | AN2/SS1/RB2 — Analog input 2 / SPI slave select 1 / port B2 |
| Pin 5 | AN3/INDX/RB3 — Analog input 3 / QEI index pulse / port B3 |
| Pin 6 | AN4/QEA/RB4 — Analog input 4 / QEI channel A / port B4 |
| Pin 7 | VDD — Positive supply (3.0 V to 3.6 V) |
| Pin 8 | VSS — Ground reference |
| Pin 9 | OSC1/CLKI/RA2 — Oscillator crystal input / external clock input / port A2 |
| Pin 10 | OSC2/CLKO/RA3 — Oscillator crystal output / clock output / port A3 |
| Pin 11 | VCAP/VDDCORE — Core voltage regulator capacitor connection (external ~10 uF to VSS) |
| Pin 12 | RP19/RB8 — Peripheral Pin Select remappable I/O / I2C2 SCL / port B8 |
| Pin 13 | RP18/RB9 — Peripheral Pin Select remappable I/O / I2C2 SDA / port B9 |
| Pin 14 | RP27/RB10 — PPS remappable I/O / JTAG TMS / port B10 |
| Pin 15 | RP26/RB11 — PPS remappable I/O / JTAG TCK / port B11 |
| Pin 16 | RP28/RB12 — PPS remappable I/O / JTAG TDI / port B12 |
| Pin 17 | RP29/RB13 — PPS remappable I/O / JTAG TDO / port B13 |
| Pin 18 | RP35/RB14 — PPS remappable I/O / RTCC pulse / port B14 |
| Pin 19 | RP36/RB15 — PPS remappable I/O / port B15 |
| Pin 20 | VDD — Positive supply (3.0 V to 3.6 V) |
| Pin 21 | VSS — Ground reference |
| Pin 22 | RP34/RF2 — PPS remappable I/O / I2C1 SDA / port F2 |
| Pin 23 | RP33/RF3 — PPS remappable I/O / I2C1 SCL / port F3 |
| Pin 24 | RP43/RF13 — PPS remappable I/O / port F13 |
| Pin 25 | RP42/RF12 — PPS remappable I/O / port F12 |
| Pin 26 | RP41/RF11 — PPS remappable I/O / port F11 |
| Pin 27 | AVSS — Analog ground reference |
| Pin 28 | AVDD — Analog supply for ADC (connect to VDD via filter) |
Typical Applications
DSPIC33EP512MC202-E/SO is suitable for 6 applications: Field-Oriented Motor Control (FOC), Industrial Power Conversion (Inverters, UPS), HVAC Compressor and Fan Drives, E-Bike and Light Electric Vehicle Controllers, Servo Amplifiers and Motion Control, Embedded DSP and Digital Filtering.
Field-Oriented Motor Control (FOC)
The DSPIC33EP512MC202-E/SO is a purpose-built controller for precision FOC of BLDC and PMSM motors. Its 70 MIPS DSP core executes Park/Clarke transforms and PI current loops at switching frequencies well above audibility, while the dedicated MCPWM module generates complementary outputs with dead-time insertion and cycle-by-cycle current limiting. The QEI interface reads a rotary encoder at full motor speed without CPU overhead. With the -E grade rated to +125C, the controller tolerates hot drive enclosures. Place it between the current-sense shunt amplifiers and the three-phase gate drivers; the deterministic DSP pipeline closes current loops in a single PWM period, unlike generic MCUs that need external co-processors.
Recommended
Industrial Power Conversion (Inverters, UPS)
Solar micro-inverters, digital UPS, and PFC front-ends need simultaneous high-resolution PWM generation, fast ADC sampling synchronized to the PWM carrier, and DSP math for control laws - precisely the dsPIC33EP512MC202-E/SO profile. The 70 MIPS core runs proportional-resonant or predictive current controllers in C or optimized assembly, and the MCPWM module supports phase-shifted and complementary topologies. The extended -40C to +125C rating suits sealed outdoor converter enclosures where ambient temperatures approach +85C and self-heating adds 20-30C. In the signal chain, the DSC sits after voltage/current sensing conditioners and before isolated gate-driver ICs, coordinating fault shutdown within one PWM cycle for safe fault handling.
Recommended
HVAC Compressor and Fan Drives
Compressor and blower drives in commercial HVAC demand sensorless motor control with robust protection at elevated ambient temperatures. The DSPIC33EP512MC202-E/SO provides the MCPWM module with fault inputs for overcurrent shutdown, ADC synchronized to PWM for low-noise shunt sampling, and enough DSP throughput for sliding-mode-observer or back-EMF sensorless algorithms at 70 MIPS. The -E temperature grade covers plant-room environments exceeding +85C ambient. The 28-SOIC through-hole-rework-friendly package simplifies field diagnostics during development. Firmware stored in 512 KB Flash leaves headroom for protocol stacks (Modbus, BACnet MS/TP) alongside the motor-control kernel in a single-chip solution, reducing BOM count versus MCU plus external DSP.
Recommended
E-Bike and Light Electric Vehicle Controllers
Light EV traction controllers combine a three-phase motor drive with battery monitoring and communications. The DSPIC33EP512MC202-E/SO integrates the motor-control PWM, encoder interface for hub-motor commutation, and sufficient Flash for torque-control firmware plus a UART/CAN-based display protocol. The +125C -E rating addresses under-seat controller enclosures where summer ambient plus power-dissipation heating challenges industrial-grade parts. Running the 70 MIPS core, traction maps and field-weakening tables execute without exceeding one PWM period of latency. In the powertrain signal chain, the DSC reads throttle and brake inputs, phase currents, and battery voltage, then drives three half-bridge gate drivers; 512 KB Flash accommodates OTA-updatable firmware with dual-bank safety images.
Recommended
Servo Amplifiers and Motion Control
Compact servo amplifiers require trajectory generation, position-loop closure, and encoder interpolation in one controller. The QEI of the DSPIC33EP512MC202-E/SO counts quadrature edges at motor speed in hardware, freeing the 70 MIPS DSP core for the position and velocity cascaded loops, while the MCPWM module drives the power stage with dead-time-compensated complementary outputs. With 48 KB of RAM, engineers buffer trajectory points and run floating-point-emulated control loops without external memory. The +125C -E grade suits enclosed cabinets next to drives dissipating heat. Connected between a motion-command interface (step/direction or serial) and gate drivers, this single-chip approach replaces the traditional MCU-plus-FPGA servo architecture at lower cost and power.
Recommended
Embedded DSP and Digital Filtering
Beyond motor control, the dsPIC33E core's hardware MAC, modulo and bit-reversed addressing make the DSPIC33EP512MC202-E/SO an efficient single-chip DSP for sensor conditioning: IIR/FIR filtering of vibration data, audio band processing, and FFT-based power-quality analysis. With 512 KB Flash, coefficient tables and overlapping sample buffers fit on-chip in the 48 KB RAM, keeping sample-deterministic loops free of external memory latency. The -40C to +125C rating enables deployment on factory machinery and outdoor telemetry nodes. In a typical signal chain, an external precision ADC streams samples over SPI into a DMA-fed double buffer; the DSP engine executes filters in place, and results are exported over UART or SPI to a host - all inside one SOIC-28 device.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33EP512MC202-E/SO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33EP512MC202-I/SO | DSPIC33EP256MC202-H/SO |
|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SOIC (7.50 mm) | 28-SOIC (7.50 mm) - same footprint | 28-SOIC (7.50 mm) - same footprint |
| CPU Speed | 70 MIPS | 70 MIPS | 70 MIPS |
| Flash Memory | 512 KB | 512 KB | 256 KB |
| RAM | 48 KB | 48 KB | 24 KB |
| Motor Control PWM / QEI | MCPWM + QEI | MCPWM + QEI | MCPWM + QEI |
| RoHS | RoHS3 Compliant | RoHS Compliant | RoHS Compliant |
| Firmware Compatibility | Reference (dsPIC33EP MC202 code base) | Binary identical | Source compatible, memory remap required |
Key Differentiators
- Extended +125C temperature rating (vs DSPIC33EP512MC202-I/SO)
- Maximum memory in the same SOIC-28 pinout (vs DSPIC33EP256MC202-H/SO)
- Prototyping-friendly SOIC package (vs DSPIC33EP512MC202-E/MM)
Design Notes
Decouple both VDD pins (7, 20) and AVDD (28) with 100 nF ceramic capacitors placed within 2 mm of each pin, plus one bulk 4.7-10 uF per supply rail. The VCAP/VDDCORE pin (11) requires the internal LDO stabilizing capacitor specified in the manufacturer datasheet - omitting or undersizing it causes brown-out resets at 70 MIPS. Keep AVDD fed through a small ferrite bead or RC filter from VDD so ADC accuracy is not degraded by digital supply noise on the shared SOIC pinout.
On a 28-SOIC land pattern, group the MCPWM outputs toward the gate-driver connector and route encoder (QEA/QEB/INDX) traces away from PWM switching edges to prevent spurious counts. Use a solid ground plane under the controller; with only two VSS pins on the package, the plane provides the majority of the return path. Peripheral Pin Select (PPS) assignments should be fixed early in layout because remappable functions share the limited 28 pins - document the final mapping against the datasheet pin diagram before routing.
Do not substitute the -E/SO with the -I/SO in designs reaching above +85C ambient - the I grade will fail outside its rating even though the footprint and firmware are identical. Second, the MCLR pin doubles as the ICSP programming voltage pin: include the programming header (MCLR, VDD, VSS, PGD, PGC) in production layouts or field firmware updates become impossible. Finally, verify 512 KB Flash is actually consumed before choosing this variant; the 256 KB same-pinout siblings are significantly cheaper for smaller firmware.
Estimated: at 70 MIPS with heavy DSP loading and all peripherals active, core current can approach the datasheet ICC-max figure; multiplying by 3.3 V yields the device dissipation used to compute junction temperature via the SOIC theta-JA from the datasheet thermal table. In sealed +85C ambient enclosures, verify the computed junction stays below the +125C rating with margin, or move to a copper-pour-enhanced layout. If margin is tight, consider the QFN /MM variant for its lower thermal resistance (requires new land pattern).
Compliance Information
ROHS3 Compliant per full-electronic.com distributor data. REACH, AEC-Q100, halogen-free, and conflict-minerals statuses not stated in retrieved data - request certificates from Microchip. Note: web data describes the dsPIC33EP512MC202T-E/SO tape-and-reel variant as AEC-Q100 qualified per microchipusa.com; qualification status of the standard -E/SO tube variant requires confirmation from the manufacturer.
