DSPIC33FJ12MC202-I/ML - 16-bit DSC, 12KB Flash, 40 MIPS Motor Control
MPN: DSPIC33FJ12MC202-I/ML ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $7.31 | $7.31 |
| 10 | $6.58 | $65.80 |
| 100 | $5.85 | $585.00 |
| 500 | $5.21 | $2,605.00 |
| 1,000 | $4.66 | $4,660.00 |
DSPIC33FJ12MC202-I/ML Overview
A Digital Signal Controller is a hybrid between a microcontroller (MCU) and a Digital Signal Processor (DSP): like an MCU it integrates Flash program memory, SRAM, and peripherals; like a DSP it adds a single-cycle MAC engine and saturating arithmetic to implement closed-loop control loops in firmware. Within the power-electronics hierarchy, DSCs occupy the position above general-purpose MCUs and below dedicated motor-control ASSPs, sitting in the broader category of embedded control silicon (DSC -> microcontroller -> embedded processor -> semiconductor).
Key features include 12 KB of Flash program memory, 1024 bytes of SRAM, an internal 7.37 MHz oscillator with PLL, a 16-bit Motor Control PWM module with up to 6 outputs and dedicated fault inputs, a 10-bit ADC with up to 9 channels and 1.1 Msps conversion rate, three 16-bit timers, a UART, an SPI, and an I2C port. The 28-QFN (6x6 mm) package offers a compact footprint with a thermal pad for board-level heat spreading and operates across -40C to +85C industrial temperature range from a 3.0 V to 3.6 V single supply.
The architecture features separate program and data memory spaces and buses, a 24-bit instruction word with 16-bit data paths, and a barrel shifter that supports single-cycle shifts. Its dual 40-bit accumulators with configurable saturation logic prevent overflow during control-loop math, while the MCU-class interrupt controller and peripheral set allow the device to replace multi-chip MCU + DSP solutions in sensorless BLDC, PMSM, and brushed-DC drive stages.
Typical applications include low-voltage sensorless BLDC and PMSM motor control, HVAC blowers and pumps, appliance fan drives, RC-servo and drone ESC controllers, small UPS and inverter auxiliary control loops, and industrial stepper drives. The 12 KB Flash budget suits tight assembly-level state machines and look-up tables for sinusoidal commutation. The QFN-28 footprint also enables use as a digital control companion to analog gate drivers in compact half-bridge designs.
When designing with this device, allocate the QFN thermal pad with a continuous copper pour and at least 9 thermal vias to the internal ground plane to keep junction temperature within limits under heavy PWM switching loads. Always enable the watchdog timer and configure the motor-control PWM fault inputs to immediately tri-state outputs in hardware, bypassing firmware latency for safe commutation on overcurrent events.
This page synthesizes distributor pricing, drop-in same-package alternatives drawn from the dsPIC33F family, and practical design notes not found on a single manufacturer datasheet page.
Drop-in alternatives for DSPIC33FJ12MC202-I/ML — 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 DSPIC33FJ12MC202-I/ML (same form factor and footprint) — differing in Core Architecture, Package, ADC, Communication, DSP Engine.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33FJ12MC202-E/ML
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33FJ12GP202-I/ML
✅ Drop-In✓ In Stock
$2.69 / Unit
View Datasheet →DSPIC33FJ12MC202-I/ML Maximum Ratings & Electrical Characteristics
| Family | dsPIC33F |
| Core Architecture | 16-bit DSC (modified Harvard) |
| CPU Speed | 40 MIPS |
| Clock Frequency | 40 MHz |
| Program Memory (Flash) | 12 KB |
| RAM | 1024 bytes |
| Supply Voltage | 3.0 V to 3.6 V |
| I/O Ports | 21 |
| Package | QFN-28 (6x6 mm) |
| Mounting Type | Surface Mount |
| Operating Temperature | -40C to +85C |
| ADC | 10-bit, up to 9 channels, 1.1 Msps |
| Motor Control PWM | 16-bit, up to 6 outputs with fault inputs |
| Timers | Three 16-bit |
| Communication | UART, SPI, I2C |
| MSL Level | 3 (168 hours) |
| RoHS Status | Compliant |
| Lead-Free | Yes |
DSPIC33FJ12MC202-I/ML Pin Configuration
| Pin 1 | OSC1/RA0 — Oscillator crystal input / GPIO RA0 |
| Pin 2 | OSC2/RA1 — Oscillator crystal output / GPIO RA1 |
| Pin 3 | RA2 — GPIO RA2 |
| Pin 4 | RA3 — GPIO RA3 |
| Pin 5 | RA4 — GPIO RA4 |
| Pin 6 | AVDD — Analog supply voltage |
| Pin 7 | AVSS — Analog ground |
| Pin 8 | VDD — Digital supply voltage |
| Pin 9 | RB0 — GPIO RB0 |
| Pin 10 | RB1 — GPIO RB1 |
| Pin 11 | RB2 — GPIO RB2 |
| Pin 12 | RB3 — GPIO RB3 |
| Pin 13 | RC0 — GPIO RC0 |
| Pin 14 | RC1 — GPIO RC1 |
| Pin 15 | RC2 — GPIO RC2 |
| Pin 16 | RC3 — GPIO RC3 |
| Pin 17 | RC4 — GPIO RC4 |
| Pin 18 | RC5 — GPIO RC5 |
| Pin 19 | VSS — Digital ground |
| Pin 20 | RC6 — GPIO RC6 |
| Pin 21 | RC7 — GPIO RC7 |
| Pin 22 | RB4 — GPIO RB4 |
| Pin 23 | RB5 — GPIO RB5 |
| Pin 24 | RB6 — GPIO RB6 / programming clock |
| Pin 25 | RB7 — GPIO RB7 / programming data |
| Pin 26 | RB8 — GPIO RB8 |
| Pin 27 | RB9 — GPIO RB9 |
| Pin 28 | MCLR — Master Clear (reset) input |
Typical Applications
DSPIC33FJ12MC202-I/ML is suitable for 6 applications: Sensorless BLDC Motor Control, HVAC Blower and Fan Motor Drive, Small Appliance and Kitchen Motor Control, Drone and RC Electronic Speed Controller, Industrial Pumps and Compressors, Power Tool and Cordless Tool Motor Drive.
Sensorless BLDC Motor Control
The DSPIC33FJ12MC202-I/ML is purpose-built for sensorless BLDC motor control in 12 V to 48 V applications. Its 40 MIPS CPU with single-cycle 16x16 MAC executes trapezoidal and sinusoidal commutation firmware at 20-50 kHz PWM rates, while the dedicated Motor Control PWM module delivers 6 complementary outputs with programmable dead time and fault inputs that tri-state the inverter in under 100 ns on overcurrent events. The 1.1 Msps 10-bit ADC samples phase voltages through integrated comparators for back-EMF zero-cross detection, and the 12 KB Flash budget fits Microchip's standard sensorless BLDC reference firmware plus a user-tuned PI controller.
Recommended
HVAC Blower and Fan Motor Drive
Residential and commercial HVAC blower and fan drives leverage the DSPIC33FJ12MC202-I/ML's Motor Control PWM for silent variable-speed control of single-phase capacitor-run or three-phase BLDC blower motors. The DSC's DSP engine implements closed-loop speed PI controllers with anti-windup, while the hardware fault inputs latch the inverter in a safe state on sensor shorts. The 28-QFN (6x6 mm) footprint and 3.3 V single-rail operation fit small blower control boards mounted directly on the motor housing, and the -40C to +85C industrial range covers rooftop unit environments.
Recommended
Small Appliance and Kitchen Motor Control
Mixers, food processors, washing-machine pumps, and dishwasher circulation pumps use the DSPIC33FJ12MC202-I/ML as the digital controller for their universal, BLDC, or PMSM motors. The 12 KB Flash stores both motor-control code and appliance-specific UI state machines (button debouncing, LED sequences, safety interlocks), eliminating a second companion MCU. Low cost and the small 28-QFN (6x6 mm) footprint allow the device to replace legacy 8-bit PIC16 solutions while delivering quieter variable-speed operation and lower audible noise via 25 kHz+ PWM switching above the human hearing range.
Recommended
Drone and RC Electronic Speed Controller
Compact quadcopter and RC electronic speed controllers (ESCs) pair the DSPIC33FJ12MC202-I/ML with discrete MOSFET half-bridges to drive three-phase BLDC motors at 30-50 kHz PWM rates. The DSC's fast 40 MIPS CPU executes fast sinusoidal commutation or simple field-oriented control, while the dedicated Motor Control PWM's 6 outputs provide three complementary pairs for the inverter with programmable dead-band to prevent shoot-through. The 10-bit ADC reads phase currents for current limiting on aggressive throttle commands, and the small QFN-28 footprint fits inside miniature 20 mm x 20 mm four-in-one ESC PCBs.
Recommended
Industrial Pumps and Compressors
Variable-speed industrial pumps and small compressors use the DSPIC33FJ12MC202-I/ML for pressure or flow closed-loop control of three-phase induction or BLDC motors. The DSC runs encoderless speed estimation algorithms using the ADC inputs, and the dedicated fault inputs shut down the inverter within microseconds of detecting a stall or overcurrent event. The 12 KB Flash fits the commutation, protection, and Modbus RTU stack needed to integrate into industrial control networks, and the industrial -40C to +85C range covers factory-floor cabinet environments.
Recommended
Power Tool and Cordless Tool Motor Drive
Cordless drill, impact driver, and small saw motor controllers use the DSPIC33FJ12MC202-I/ML to drive high-RPM BLDC motors with precise torque and speed regulation. The 16-bit Motor Control PWM with fault inputs provides hardware shutdown on stalled-rotor detection, and the 40 MIPS CPU runs the field-weakening and current-control loops needed for high-power-density power tools. The 28-QFN (6x6 mm) package fits inside the tool handle PCB alongside the battery management electronics, and the low 3.3 V supply current (typical 30 mA) extends battery run-time between charges.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33FJ12MC202-I/ML — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33FJ12MC202-E/ML | DSPIC33FJ12GP202-I/ML | DSPIC33FJ12MC201-I/SS | |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | |
| Package | QFN-28 (6x6 mm) | QFN-28 (6x6 mm) - same | QFN-28 (6x6 mm) - same | SSOP-20 | PDIP-20 |
| Flash Memory | 12 KB | 12 KB | 12 KB | 12 KB | |
| RAM | 1024 bytes | 1024 bytes | 1024 bytes | 1024 bytes | |
| CPU Speed | 40 MIPS | 40 MIPS | 40 MIPS | 40 MIPS | |
| Motor Control PWM | Yes (6 outputs, fault inputs) | Yes (6 outputs, fault inputs) | No (standard 16-bit PWM only) | Yes (6 outputs, fault inputs) | |
| Operating Temperature | -40C to +85C | -40C to +125C | -40C to +85C | -40C to +85C | |
| Supply Voltage | 3.0 V to 3.6 V | 3.0 V to 3.6 V | 3.0 V to 3.6 V | 3.0 V to 3.6 V | |
| I/O Pins | 21 | 21 | 21 | 15 |
Key Differentiators
- Dedicated Motor Control PWM module with hardware fault inputs (vs DSPIC33FJ12GP202-I/ML)
- Industrial temperature range with extended option available (vs DSPIC33FJ12MC201-I/SS)
- Higher pin count enables full peripheral access (vs DSPIC33FJ12MC201-I/SS)
Design Notes
Estimated: the 28-QFN (6x6 mm) package has a typical theta_JA of approximately 35-40 C/W on a JEDEC EIA/JESD51 4-layer test board with the exposed thermal pad (EP) properly soldered to the PCB. Place a continuous copper pour under the EP and stitch it to the internal ground plane with at least 9 thermal vias (0.3 mm drill, 1 mm pitch) to keep junction temperature within limits under heavy PWM switching loads. Without the EP connected to copper, theta_JA can exceed 60 C/W and trigger thermal shutdown during continuous full-load commutation.
Place the 10 uF bulk decoupling capacitor and 0.1 uF ceramic decoupling capacitor within 3 mm of the VDD pins (8 and 19) to suppress switching-noise transients generated by the 25-50 kHz PWM outputs. Keep the analog supply (AVDD) and digital supply (VDD) separated by a ferrite bead or small resistor, with a dedicated 0.1 uF + 10 uF bypass network on AVDD. The oscillator crystal or external clock source must be routed with short traces guarded by a ground ring to prevent PWM edge coupling from injecting jitter into the CPU clock.
Always enable the Motor Control PWM fault inputs (FLTA) tied to the gate driver's overcurrent or DESAT output, and configure them in cycle-by-cycle mode to tri-state the inverter in hardware without firmware latency. Avoid daisy-chaining the EP pin to ground via a single trace; use the full via array described in the thermal note. Never exceed 3.6 V on any VDD/AVDD pin during board bring-up - a missing series ferrite on AVDD can allow motor switching noise to exceed absolute maximum ratings during PWM commutation events.
Compliance Information
RoHS and REACH compliance per Microchip product page. Industrial temperature range -40C to +85C; no AEC-Q100 automotive qualification - choose -E variant or DSPIC33FJ33MC for automotive.
