DSPIC33EP32MC202-I/SP - 16-bit 70 MIPS DSC 32KB Flash | Microchip
MPN: DSPIC33EP32MC202-I/SP ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $5.42 | $5.42 |
| 10 | $4.9 | $49.00 |
| 100 | $4.41 | $441.00 |
| 500 | $3.97 | $1,985.00 |
| 1,000 | $3.57 | $3,570.00 |
DSPIC33EP32MC202-I/SP Overview
A digital signal controller combines the computational capability of a digital signal processor (DSP) with the peripheral integration and control architecture of a microcontroller (MCU). In the power-management hierarchy, the dsPIC33E family sits within Microchip's 16-bit MCU/DSC product line, bridging general-purpose PIC24 microcontrollers and dedicated DSPs.
Key features include a high-speed PWM module for motor control, a Quadrature Encoder Interface (QEI) for position feedback, integrated DSP engine instructions (MAC, DSP multiply), 3.3V operation, and in-circuit serial programming (ICSP) via the two-wire Programming/Debug interface. The 28-pin SPDIP package makes the part especially popular for prototyping and through-hole industrial boards.
Architecture highlights: the dsPIC33EP core executes 16-bit instructions at up to 70 MIPS from Flash, with hardware DSP multiply-accumulate, an 8-channel 10-bit ADC at up to 1.1 Msps on this device class, and peripheral pin select (PPS) for flexible I/O mapping on this family.
Typical applications include Brushless DC (BLDC) and permanent-magnet synchronous motor (PMSM) control, power factor correction (PFC) converters, digital power supplies, and induction heating - all areas where the high-speed PWM and ADC work together in closed-loop control.
Design consideration: the device requires a VCAP/VDDCORE capacitor on pin 25 per the manufacturer datasheet; omitting it will prevent startup. Prices shown are typical distributor levels as of 2026-09-25.
This page synthesizes distributor pricing, drop-in same-family alternatives, pinout data, and practical design notes not consolidated in the manufacturer datasheet.
Drop-in alternatives for DSPIC33EP32MC202-I/SP — 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 DSPIC33EP32MC202-I/SP (same form factor and footprint) — differing in Operating Temperature, Package, Mounting Type, Core, ADC.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33EP64MC202-I/SP
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$3.1 / Unit
View Datasheet →DSPIC33EP32GP502-I/SP
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$3.62 / Unit
View Datasheet →DSPIC33EP64GP502-I/SP
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$3.55 / Unit
View Datasheet →DSPIC33EP32MC202-E/SP
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP32MC202-I/SP Maximum Ratings & Electrical Characteristics
| Core | dsPIC33E 16-bit DSC core |
| CPU Speed | 70 MIPS (Mouser lists 60MHz instruction-clock-equivalent) |
| Program Memory (Flash) | 32KB (10.7K x 24) |
| SRAM | 4KB |
| Supply Voltage | 3.3 V |
| Package | 28-pin SPDIP (dip-28) |
| Operating Temperature | -40C to +85C (industrial, I suffix) |
| Mounting Type | Through Hole (DIP) |
| PWM Module | High-Speed PWM (motor control) |
| Encoder Interface | Quadrature Encoder Interface (QEI) |
| ADC | 10-bit, high-speed, multiple channels (28-pin variant) |
| Data Bus Width | 16 bit |
| Programming Interface | ICSP (In-Circuit Serial Programming), 2-wire PGM/Debug |
| Family | dsPIC33EP32MC202 (dsPIC33E, Precision Motor Control) |
| Category (Distributor) | Digital Signal Processors & Controllers - DSP, DSC |
| Packaging | Tube |
DSPIC33EP32MC202-I/SP Pin Configuration
| Pin 1 | MCLR — Master clear reset / programming voltage input (active low) |
| Pin 2 | AN0/VREF+/CN0/RB0 — Analog input 0 / positive voltage reference / port B0 |
| Pin 3 | AN1/VREF-/CN1/RB1 — Analog input 1 / negative voltage reference / port B1 |
| Pin 4 | AN2/SS1/CN2/RB2 — Analog input 2 / SPI slave select 1 / port B2 |
| Pin 5 | AN3/INDX/CN3/RB3 — Analog input 3 / QEI index input / port B3 |
| Pin 6 | AN4/QEA/IC7/CN4/RB4 — Analog input 4 / QEI phase A / input capture 7 / port B4 |
| Pin 7 | VDD — Positive supply (3.3V) |
| Pin 8 | VSS — Ground reference |
| Pin 9 | OSC1/CLKI/CN6/RA2 — Crystal oscillator input / external clock input / port A2 |
| Pin 10 | OSC2/CLKO/CN7/RA3 — Crystal oscillator output / clock output / port A3 |
| Pin 11 | AN5/U1RX/QEB/IC8/CN11/RB5 — Analog input 5 / UART1 receive / QEI phase B / port B5 |
| Pin 12 | VSS — Ground reference |
| Pin 13 | AN6/OC1/CN12/RB6 — Analog input 6 / output compare 1 / port B6 |
| Pin 14 | AN7/U1TX/CN13/RB7 — Analog input 7 / UART1 transmit / port B7 |
| Pin 15 | AN8/PWM1L1/CN14/RB8 — Analog input 8 / PWM1 low-side output 1 / port B8 |
| Pin 16 | AN9/PWM1H1/CN15/RB9 — Analog input 9 / PWM1 high-side output 1 / port B9 |
| Pin 17 | AN10/CVREF/PWM1L2/IC1/CN16/RB10 — Analog input 10 / comparator reference / PWM1 low-side 2 / input capture 1 / port B10 |
| Pin 18 | AN11/PWM1H2/IC2/CN17/RB11 — Analog input 11 / PWM1 high-side 2 / input capture 2 / port B11 |
| Pin 19 | TCK/PWM1L3/IC3/CN18/RB12 — JTAG test clock / PWM1 low-side 3 / input capture 3 / port B12 |
| Pin 20 | TDI/PWM1H3/IC4/CN19/RB13 — JTAG test data in / PWM1 high-side 3 / input capture 4 / port B13 |
| Pin 21 | TDO/PWM1L4/IC5/CN20/RB14 — JTAG test data out / PWM1 low-side 4 / input capture 5 / port B14 |
| Pin 22 | TMS/PWM1H4/IC6/CN21/RB15 — JTAG test mode select / PWM1 high-side 4 / input capture 6 / port B15 |
| Pin 23 | SDA/RP19/CN22/RF4 — I2C data / remappable peripheral pin / port F4 |
| Pin 24 | SCL/RP18/CN23/RF5 — I2C clock / remappable peripheral pin / port F5 |
| Pin 25 | VCAP/VDDCORE — Internal core regulator output - requires external stabilizing capacitor (per datasheet) |
| Pin 26 | AVSS — Analog ground |
| Pin 27 | AVDD — Analog supply (3.3V) |
| Pin 28 | EMUD1/AN12/RP27/RF3 — Emulation debug / analog input 12 / remappable peripheral pin / port F3 |
Typical Applications
DSPIC33EP32MC202-I/SP is suitable for 6 applications: BLDC/PMSM Motor Control, Digital Power Supplies and PFC, Through-Hole Prototyping and Education, Sensor Signal Conditioning and Data Acquisition, Automated and Industrial Control Nodes, Induction Heating and Resonant Converters.
BLDC/PMSM Motor Control
The DSPIC33EP32MC202-I/SP fits brushless DC and permanent-magnet synchronous motor drives because its 70 MIPS DSP core can execute field-oriented control (FOC) loops at 20+ kHz while the high-speed PWM generates complementary outputs with hardware dead-band for 3-phase inverters. The Quadrature Encoder Interface decodes rotor position without software overhead, and the fast 10-bit ADC samples phase currents mid-PWM-cycle for low-noise sensing. Place the DSC between the current-sense shunt amplifiers and the gate-driver stage; running the PWM at 20 kHz with centered alignment synchronizes ADC sampling to the zero-current vector, cutting measurement ripple. Trade-off: at 70 MIPS from Flash the part draws its full core current, but total system power is negligible versus motor wattage. Source: Microchip dsPIC33E family product page.
Recommended
Digital Power Supplies and PFC
Switch-mode power supplies and power-factor-correction stages benefit from the DSPIC33EP32MC202-I/SP's deterministic control: the 70 MIPS core closes voltage/current loops in microseconds while the high-speed PWM supports frequency, phase-shift, and duty modulation with dead-band insertion in hardware. The fast ADC can trigger directly from the PWM timer, sampling inductor current at the ideal instant to avoid switching-edge noise. In a 500 kHz LLC or boost-PFC stage, this eliminates external analog compensation networks, letting firmware adapt loop gains across load ranges. The 3.3V I/O levels interface cleanly with gate-driver logic. Trade-off: digital control adds firmware complexity versus a fixed-frequency analog controller, and the internal oscillator tolerance should be checked when tight frequency accuracy is required; a crystal on OSC1/OSC2 pins 9-10 provides the precision reference.
Recommended
Through-Hole Prototyping and Education
The 28-pin SPDIP package makes the DSPIC33EP32MC202-I/SP one of the few 70 MIPS DSCs that plugs directly into a breadboard or DIP socket. Universities and lab benches use it to teach digital control because students can flash new firmware via the low-cost two-wire ICSP interface (MCLR on pin 1 plus PGD/PGC pins) using PICkit-class programmers under free MPLAB X and XC16 tools. The same die as the surface-mount /SS and /SO variants means prototype firmware transfers unchanged to production boards, and the /SP footprint accepts 64KB Flash family members for headroom. For classroom kits, the industrial -40C to +85C rating tolerates rough handling. This is why DigiKey markets the 28-SPDIP variant to both makers and production buyers shipping the same day.
Recommended
Sensor Signal Conditioning and Data Acquisition
With up to 12 analog-capable pins (AN0-AN12 multiplexed on port B and RF3) and a 10-bit high-speed ADC, the DSPIC33EP32MC202-I/SP serves as a compact acquisition node for multi-sensor front ends. The 70 MIPS DSP engine runs FIR/IIR filters and FFT math in hardware-assisted MAC instructions, letting the chip condition and analyze signals - vibration, load-cell, or ultrasound - locally before streaming results over UART, SPI, or I2C (SDA/SCL on pins 23-24). Peripheral Pin Select on the dsPIC33EP family maps communication peripherals to chosen pins, simplifying board routing. A reference design pattern: run the ADC in 1.1 Msps-class mode with DMA-style buffering, filter in the DSP engine, and report at 100 Hz over serial. Trade-off: the 10-bit ADC resolution may need an external delta-sigma converter for sub-millivolt precision measurements.
Recommended
Automated and Industrial Control Nodes
In factory automation, the DSPIC33EP32MC202-I/SP acts as a real-time control node where fast loops matter: stepper/servo command execution, closed-loop valve or pump control, and encoder-based positioning via the QEI. The industrial -40C to +85C rating and through-hole SPDIP reliability suit vibration-prone and serviceable industrial boards where solder joints on fine-pitch SMD parts are a concern. The 70 MIPS core handles PID plus safety supervision concurrently, while the 32KB Flash holds protocol stacks and calibration tables. Communication to a PLC or supervisory controller runs over UART or I2C; adding an external CAN transceiver extends it onto industrial fieldbuses. Design tip: route VSS (pins 8, 12) and AVSS (pin 26) to a solid ground plane and keep the VCAP pin-25 capacitor within 5 mm of the pin for noise immunity on electrically harsh factory floors.
Recommended
Induction Heating and Resonant Converters
Resonant power conversion - induction cooktops, wireless power, induction heating - needs variable-frequency PWM with precise phase relationships, exactly what the high-speed PWM module on the DSPIC33EP32MC202-I/SP provides. The 70 MIPS core tracks resonant-frequency drift by adjusting the PWM period based on phase-current feedback sampled by the fast ADC, implementing frequency-tracking control loops in firmware that would require a dedicated analog resonant controller otherwise. Dead-band hardware protects the half-bridge during every switching transition, and the ADC can synchronize sampling to PWM edges to read tank current at consistent phase points. Because tank frequencies can reach hundreds of kilohertz, verify the PWM resolution at your target frequency in the manufacturer datasheet family section. The 3.3V DSC interfaces with gate-driver ICs through short, guarded traces; keep the control ground separate from the power ground until a single star point.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33EP32MC202-I/SP — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33EP64MC202-I/SP | DSPIC33EP32GP502-I/SP | DSPIC33EP64GP502-I/SP | DSPIC33EP32MC202-E/SP |
|---|---|---|---|---|---|
| Package | 28-pin SPDIP (dip-28) | 28-pin SPDIP (dip-28) - same | 28-pin SPDIP (dip-28) - same | 28-pin SPDIP (dip-28) - same | 28-pin SPDIP (dip-28) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Program Memory | 32KB (10.7K x 24) | 64KB (21.5K x 24) | 32KB (10.7K x 24) | 64KB (21.5K x 24) | 32KB (10.7K x 24) |
| SRAM | 4KB | 4KB | 4KB | 4KB | 4KB |
| CPU Speed | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS |
| Peripheral Mapping | Motor Control (MC): high-speed PWM, QEI | Motor Control (MC) - same | General Purpose (GP) | General Purpose (GP) | Motor Control (MC) - same |
| Operating Temperature | -40C to +85C (industrial) | -40C to +85C (industrial) | -40C to +85C (industrial) | -40C to +85C (industrial) | -40C to +125C (extended) |
| Supply Voltage | 3.3 V | 3.3 V | 3.3 V | 3.3 V | 3.3 V |
| Mounting | Through Hole (DIP) | Through Hole (DIP) | Through Hole (DIP) | Through Hole (DIP) | Through Hole (DIP) |
Key Differentiators
- Motor-control peripheral mapping in a prototyping-friendly DIP package (vs DSPIC33EP32GP502-I/SP)
- Doubling Flash headroom without a respin (vs DSPIC33EP64MC202-I/SP)
- Extended temperature operation (vs DSPIC33EP32MC202-E/SP)
Design Notes
The VCAP/VDDCORE pin (pin 25 on the 28-pin SPDIP) is the output of the internal 2.5V core regulator and MUST have an external low-ESR capacitor (typically 10uF) placed within a few millimeters of the pin per the manufacturer datasheet. This is the single most common bring-up failure on the dsPIC33EP family - a missing or too-distant VCAP capacitor causes erratic resets or complete failure to start. Separate AVDD (pin 27) from digital VDD (pin 7) with an RC filter (e.g., 10 ohm + 0.1uF) to keep ADC noise low.
On through-hole SPDIP layouts, keep the analog ground (AVSS pin 26) and digital grounds (VSS pins 8 and 12) on a solid ground plane connected at a single point near the ADC. Route the crystal on OSC1/OSC2 (pins 9-10) with short traces and guard with ground if the internal oscillator's accuracy is insufficient for your control loop. Because all PWM1L/H outputs share port B with analog inputs, verify Peripheral Pin Select assignments against your pin usage before final routing to avoid contention.
Do not confuse package suffixes: /SP is SPDIP through-hole, /SS is SSOP, /SO is SOIC - they are the same die but NOT interchangeable on a PCB. The 'I' grade is limited to +85C; use the -E variant for +125C environments. When migrating from dsPIC33F parts, note the EP family changed Flash programming timing and configuration-word addresses - code does not port without review. Finally, ICSP programming requires MCLR held at programming voltage; add a 10k pull-up and programming connector on pin 1 in every design.
Compliance Information
Compliance declarations were not present in the verified web data retrieved on 2026-09-25. Obtain Microchip's official environmental datasheet or certificate of conformance for the purchased lot before use in certified products.
