DSPIC33FJ12MC202T-I/SS - 16-Bit 40MIPS Motor Control DSC | Microchip
MPN: DSPIC33FJ12MC202T-I/SS ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.67 | $3.67 |
| 10 | $3.3 | $33.00 |
| 100 | $2.85 | $285.00 |
| 500 | $2.55 | $1,275.00 |
| 1,000 | $2.32 | $2,320.00 |
DSPIC33FJ12MC202T-I/SS Overview
A Digital Signal Controller (DSC) is a hybrid architecture that fuses a deterministic MCU core with the math density of a DSP. In the broader taxonomy, this part is a motor-control-optimized DSC -> 16-bit MCU -> microcontroller -> embedded processor -> semiconductor IC. It fits between pure MCUs (which lack DSP throughput for tight control loops) and full DSPs (which lack general-purpose peripherals for sequencing). The dsPIC33FJ12MC202 places DSP acceleration in front of the MCU bus so that interrupt-driven motor loops can close in microseconds without CPU starvation.
Key features of the DSPIC33FJ12MC202T-I/SS include a 6-channel 10-bit/12-bit ADC with up to 1.1 Msps conversion rate, dedicated motor-control PWM with complementary outputs and programmable dead time, a quadrature encoder interface (QEI) for position feedback, and on-chip Flash with self-programming support. The -40C to +85C industrial temperature grade and 3.0 V to 3.6 V supply range suit industrial drives, appliance compressors, and HVAC blowers.
Typical applications include BLDC and PMSM motor drives for fans and pumps, sensorless FOC compressors, low-power field-oriented servo drives, ceiling-fan and small-appliance inverter stages, and battery-powered e-mobility controllers where deterministic loop time and DSP MAC throughput minimize torque ripple.
Designers should plan for the dedicated motor-control PWM alignment to gate-driver propagation delays and use the QEI peripheral for rotor-position feedback. The 28-SSOP footprint keeps the BOM cost lower than QFN alternatives while still exposing the full motor-control peripheral set.
This page synthesizes distributor pricing, drop-in SSOP-28 alternatives, and practical design notes not consolidated in the manufacturer datasheet.
Drop-in alternatives for DSPIC33FJ12MC202T-I/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 DSPIC33FJ12MC202T-I/SS (same form factor and footprint) — differing in ADC, Package, Core Architecture, I/O Pins, Mounting Type.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33FJ12MC202-I/SS
✅ Drop-In✓ In Stock
$2.62 / Unit
View Datasheet →DSPIC33FJ12MC201T-I/SS
✅ Drop-In✓ In Stock
$2.46 / Unit
View Datasheet →DSPIC33FJ12MC201-I/SS
✅ Drop-In✓ In Stock
$2.46 / Unit
View Datasheet →DSPIC33FJ128MC202T-I/SO
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33FJ12GP202-I/SP
✅ Drop-In✓ In Stock
$2.69 / Unit
View Datasheet →DSPIC33FJ12MC202T-I/SS Maximum Ratings & Electrical Characteristics
| Core Architecture | dsPIC33F (16-bit DSC) |
| Program Memory | 12 KB Flash |
| Data RAM | 1 KB |
| Maximum Clock Frequency | 40 MHz (40 MIPS) |
| Supply Voltage | 3.0 V to 3.6 V |
| Operating Temperature | -40C to +85C (industrial) |
| I/O Pins | 21 |
| ADC | 6-channel 10/12-bit, up to 1.1 Msps |
| Motor Control PWM | Yes, with complementary outputs and dead time |
| Quadrature Encoder Interface | Yes (QEI) |
| Package | 28-SSOP (5.30 mm) |
| Mounting Type | Surface Mount |
| DSP Engine | Dual 40-bit accumulators, single-cycle MAC |
| ROM Type | Flash (self-programmable) |
| RoHS Status | Compliant |
DSPIC33FJ12MC202T-I/SS Pin Configuration
| Pin 1 | MCLR — Master Clear (Reset) input |
| Pin 2 | AN0/VREF+/CN2/RB0 — ADC input / VREF+ / QEA / digital I/O |
| Pin 3 | AN1/VREF-/CN3/RB1 — ADC input / VREF- / QEB / digital I/O |
| Pin 4 | AN2/SS1/RB2 — ADC input / SPI SS / digital I/O |
| Pin 5 | AN3/OC1/RB3 — ADC input / Output Compare 1 / digital I/O |
| Pin 6 | AN4/RB4 — ADC input / digital I/O |
| Pin 7 | AN5/RB5 — ADC input / digital I/O |
| Pin 8 | OSC1/RA0 — Oscillator crystal input / digital I/O |
| Pin 9 | OSC2/RA1 — Oscillator crystal output / digital I/O |
| Pin 10 | FLTA/RA2 — PWM Fault input / digital I/O |
| Pin 11 | PWM1H/RA3 — PWM1 High-side output / digital I/O |
| Pin 12 | VSS — Ground |
| Pin 13 | VDD — Digital supply voltage |
| Pin 14 | PWM1L/RA4 — PWM1 Low-side output / digital I/O |
| Pin 15 | PWM2H/RA5 — PWM2 High-side output / digital I/O |
| Pin 16 | PWM2L/RA6 — PWM2 Low-side output / digital I/O |
| Pin 17 | PWM3H/RA7 — PWM3 High-side output / digital I/O |
| Pin 18 | PWM3L/RB8 — PWM3 Low-side output / digital I/O |
| Pin 19 | RB9 — Digital I/O |
| Pin 20 | RB10 — Digital I/O |
| Pin 21 | RB11 — Digital I/O |
| Pin 22 | RB12 — Digital I/O |
| Pin 23 | RB13 — Digital I/O |
| Pin 24 | RB14 — Digital I/O |
| Pin 25 | RB15 — Digital I/O |
| Pin 26 | RC1 — Digital I/O |
| Pin 27 | VSS — Ground |
| Pin 28 | VDD — Digital supply voltage |
Typical Applications
DSPIC33FJ12MC202T-I/SS is suitable for 7 applications: BLDC Ceiling Fan and Exhaust Fan Motor Drives, PMSM Compressor Drives for Refrigerators and HVAC, Battery-Powered E-Bike and E-Mobility Controllers, Industrial Sensorless Pump and Blower Drives, Small Servo and Robotic Joint Controllers, Appliance Inverter Control Boards (Washer, Dishwasher, Microwave), Drones and UAV ESC (Electronic Speed Controller) Designs.
BLDC Ceiling Fan and Exhaust Fan Motor Drives
The DSPIC33FJ12MC202T-I/SS fits cost-sensitive BLDC ceiling-fan drives because its 40 MIPS throughput and single-cycle MAC engine execute sensorless back-EMF commutation loops in microseconds. The dedicated motor-control PWM module delivers complementary 6-output PWM with programmable dead time (up to 32 ns resolution at 40 MHz), directly driving a 3-phase gate driver such as the Microchip MCP8021 or TI DRV8313 without additional external logic. Its 6-channel 10/12-bit ADC samples phase currents and bus voltage simultaneously at up to 1.1 Msps, enabling closed-loop current limiting to protect the motor and improve acoustic performance. The 28-SSOP package and 12 KB Flash footprint support compact fan-hub PCBs, while the -40C to +85C industrial temperature range handles attic and bathroom environments.
Recommended
PMSM Compressor Drives for Refrigerators and HVAC
The DSPIC33FJ12MC202T-I/SS is well suited to variable-speed PMSM compressors used in refrigerators, freezers, and HVAC outdoor units. The dsPIC engine performs space-vector modulation and Park/Clarke transforms in a few hundred cycles, leaving headroom for sensorless FOC, compressor-startup vibration control, and power-factor-correction loops in the same firmware. Its 21 GPIO and QEI interface accommodate pulse-by-pulse rotor-position feedback or sensorless observers via the ADC. Supply range of 3.0-3.6 V matches a 3.3 V regulator fed from the compressor's auxiliary rail. Industrial -40C to +85C support covers outdoor condenser unit and refrigerator-freezer compartment conditions. Microchip application note AN1078 documents sensorless FOC implementation, allowing designers to reuse firmware across compressor platforms.
Recommended
Battery-Powered E-Bike and E-Mobility Controllers
The DSPIC33FJ12MC202T-I/SS enables compact e-bike and e-scooter motor controllers because the 40 MIPS dsPIC core plus 6-channel ADC support field-oriented control and torque-ripple suppression within a 12 KB Flash budget. The motor-control PWM with complementary outputs and fault input provides hardware shutdown on overcurrent, integrating tightly with discrete half-bridges such as the IRF7507 or AON7403. Industrial -40C to +85C operation tolerates outdoor scooter storage and summer pavement temperatures. The 28-SSOP package fits 4-layer controller PCBs that already carry power-MOSFET, BMS, and BLE telemetry sections. Pairing the DSC with a 3.3 V LDO and current-sense amplifier creates a full torque-control loop with regenerative-braking firmware built in the DSP MAC engine.
Recommended
Industrial Sensorless Pump and Blower Drives
The DSPIC33FJ12MC202T-I/SS suits industrial sensorless pumps and blowers where deterministic control loops and industrial-grade temperature compliance are mandatory. The 40 MIPS throughput runs back-EMF-based observers to start pumps reliably under load, and the integrated 6-channel ADC handles bus voltage, current, and temperature feedback with 1.1 Msps aggregate throughput. Programmable dead-time insertion in the PWM module protects the 3-phase inverter switches from shoot-through during compressor or pump transients. The -40C to +85C industrial grade addresses outdoor blower and wastewater-pump installations. Designers can leverage Microchip AN1078 to drop in sensorless FOC firmware, reducing time-to-market versus discrete MCU + DSP solutions.
Recommended
Small Servo and Robotic Joint Controllers
The DSPIC33FJ12MC202T-I/SS powers small servo and robotic joint controllers thanks to its QEI peripheral for closed-loop position sensing and DSP throughput for PID + feed-forward control. At 40 MIPS, the device computes a 1 kHz position loop with sinusoidal commutation in 8-10 k instructions, leaving 70-80% of cycles for I/O handling and communication. Its 21 GPIO supports Hall sensors, QEI inputs, PWM outputs, and a serial link to a host microcontroller without external muxing. The 28-SSOP footprint is compact enough for tight robotic-joint enclosures, and the industrial temperature grade accommodates robot-arm heat-rise scenarios. Developers can use the dsPIC33F Peripheral Library to prototype quickly and migrate to optimized in-line code for production.
Recommended
Appliance Inverter Control Boards (Washer, Dishwasher, Microwave)
The DSPIC33FJ12MC202T-I/SS is commonly selected for major-appliance inverter control boards (washing machines, dishwashers, microwave oven hood fans) because it integrates DSP acceleration, motor-control PWM, and a 6-channel ADC in one IC. The combination supports direct drive of PMSM wash drums, BLDC dishwasher pumps, and recirculation fans while implementing torque-ripple smoothing, vibration suppression, and unbalanced-load detection in firmware. The 28-SSOP package simplifies SMT assembly on high-volume appliance lines, and the 3.0-3.6 V supply aligns with 3.3 V regulator rails already used for Wi-Fi/Bluetooth modules. Industrial temperature grading handles steam and thermal-cycling environments of dishwasher and washer compartments.
Recommended
Drones and UAV ESC (Electronic Speed Controller) Designs
The DSPIC33FJ12MC202T-I/SS supports hobby and commercial UAV electronic speed controllers (ESCs) because its 40 MIPS DSP engine runs fast sinusoidal commutation at 8-32 kHz with one-cycle MAC operations, ideal for high-RPM BLDC motors. The motor-control PWM module supports Dshot, Oneshot, and standard PWM throttle inputs from flight controllers, while the 6-channel ADC monitors battery voltage, current, and temperature for telemetry and over-current protection. The 28-SSOP footprint fits compact 4-in-1 ESC boards where space is critical, and 3.3 V supply simplifies integration with 5 V BEC regulators. Industrial temperature grade accommodates hot ESC environments near propellers and battery packs. Designers can build sensorless or sensored ESC firmware using Microchip's motor-control library.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33FJ12MC202T-I/SS — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33FJ12MC202-I/SS | DSPIC33FJ12MC201T-I/SS | DSPIC33FJ12MC201-I/SS |
|---|---|---|---|---|
| Package | 28-SSOP | 28-SSOP - same | 28-SSOP - same | 28-SSOP - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core Architecture | dsPIC33F (16-bit DSC) | dsPIC33F (16-bit DSC) | dsPIC33F (16-bit DSC) | dsPIC33F (16-bit DSC) |
| Program Memory (Flash) | 12 KB | 12 KB | 6 KB (-50%) | 6 KB (-50%) |
| Data RAM | 1 KB | 1 KB | 1 KB | 1 KB |
| Maximum Clock Frequency | 40 MHz / 40 MIPS | 40 MHz / 40 MIPS | 40 MHz / 40 MIPS | 40 MHz / 40 MIPS |
| ADC Channels | 6 ch, 10/12-bit | 6 ch, 10/12-bit | 6 ch, 10/12-bit | 6 ch, 10/12-bit |
| 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 |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
Key Differentiators
- Integrated DSP MAC engine in 28-SSOP footprint (vs PIC18F2431-I/SP)
- 12 KB Flash vs 6 KB on the 201 variant (vs DSPIC33FJ12MC201T-I/SS)
- Tape-and-reel 'T' suffix for SMT production (vs DSPIC33FJ12MC202-I/SS)
- Dedicated 3-phase motor-control PWM with complementary outputs and dead time (vs PIC18F2431-I/SP)
Design Notes
Estimated: The DSPIC33FJ12MC202T-I/SS core draws approximately 30-50 mA active at 40 MHz with all peripherals running, well below the 3.3V LDO budget of an MCP1700 (250 mA rating). Place 100 nF and 10 uF ceramic decoupling within 5 mm of pins 13 and 28 (VDD), with a short ground-return path to pins 12 and 27 (VSS). For motor-drive boards sharing 5 V and 12 V rails, feed the IC through a dedicated MCP1700 LDO to isolate digital supply from inverter switching noise.
The DSPIC33FJ12MC202T-I/SS in 28-SSOP has theta_JA of approximately 80 C/W on a standard 4-layer PCB with 1 oz copper. Estimated: at 40 MHz full-load core current of 50 mA, dissipation is approximately 0.165 W (3.3V x 50 mA), so junction temperature rise is only ~13 C above ambient - well within the 125 C junction limit. No thermal relief or copper pour beyond standard SSOP land pattern is required for motor-control firmware at this throughput.
Place the DSC within 25 mm of the 3-phase gate driver to keep PWM traces short and avoid shoot-through from propagation delay skew. Route PWM1H/L, PWM2H/L, PWM3H/L traces matched-length (<5 mm skew) to the gate driver inputs. The QEI inputs (QEA, QEB) and Hall sensor inputs should be guarded by a digital-isolation distance or via a differential receiver to avoid crosstalk from inverter switching nodes. Provide an RC filter (1 kohm + 1 nF) on MCLR for clean reset under noisy motor-bus conditions.
Do not exceed the 3.6 V absolute-maximum supply rating; transient spikes from 12 V inverter buses can destroy the IC if the LDO is shared with inductive loads. Configure unused I/O as outputs with logic-low to minimize current draw, and ensure unused ADC inputs are tied to VSS through 10 kohm to prevent floating-channel noise. When migrating from 5V PIC18F designs, verify that PWM peripheral timer configuration registers match the dsPIC33F register layout - they are not source-compatible. Use the XC16 compiler, not the legacy C30 compiler, for new projects.
Compliance Information
RoHS compliant per Microchip product page; halogen-free compliant per GlobalSpec listing; not AEC-Q100 qualified (industrial-grade -40C to +85C).
