DSPIC33FJ16MC101-I/SO - 16-Bit Motor Control DSC 16 MIPS | Microchip
MPN: DSPIC33FJ16MC101-I/SO ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $5.06 | $5.06 |
| 10 | $4.55 | $45.50 |
| 100 | $3.94 | $394.00 |
| 500 | $3.42 | $1,710.00 |
| 1,000 | $3.03 | $3,030.00 |
DSPIC33FJ16MC101-I/SO Overview
A digital signal controller combines the control peripherals of a microcontroller with the computational architecture of a DSP core. Within the power-management hierarchy, the dsPIC33F family sits between general-purpose MCUs (such as the PIC18) and full DSP processors, offering single-cycle multiply-accumulate (MAC), a barrel shifter, and dual operand fetch - ideal for real-time closed-loop motor control, digital power conversion, and sensor signal processing.
Key features include a high-speed 16-bit motor control PWM (MCPWM) module with complementary outputs and dead-time insertion, up to four high-speed analog comparators with direct PWM fault coupling, the Charge Time Measurement Unit (CTMU) for capacitive touch and precision time measurement, and Peripheral Pin Select (PPS) for flexible peripheral remapping. The core runs from a 3.0 V to 3.6 V supply and executes one instruction per cycle at up to 16 MIPS (40 MHz clock via internal PLL from an 8 MHz crystal or internal FRC oscillator).
Architecturally, the dsPIC33FJ16MC101 uses a modified Harvard 16-bit core with 16 W instruction words, two 40-bit accumulators, DSP multiply/divide support, and hardware looping. Flash program memory is rated for 10,000 erase/write cycles minimum with a 20-year retention figure per the family data sheet, and in-circuit serial programming (ICSP) enables field updates via the two-wire programming interface.
Typical applications include Brushed DC, Brushless DC (BLDC), Permanent Magnet Synchronous (PMSM) and stepper motor drives, digital power supplies and battery chargers, and sensor conditioning with the CTMU. The low pin count SOIC-20 footprint suits cost-sensitive compact motor boards.
Design consideration: at 3.3 V the I/O is not 5 V-tolerant on all pins - verify pin classes in the family data sheet (70000652f) before interfacing to 5 V logic.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for DSPIC33FJ16MC101-I/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 DSPIC33FJ16MC101-I/SO (same form factor and footprint) — differing in Package, Operating Temperature, I/O Sink/Source Current, RoHS Status, ADC.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33FJ16MC101-E/SO
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$2.71 / Unit
View Datasheet →DSPIC33FJ16MC101-H/SO
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33FJ16MC102-I/SO
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$5.1 / Unit
View Datasheet →DSPIC33FJ16MC102-E/SO
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$4.11 / Unit
View Datasheet →DSPIC33FJ12MC202-I/SO
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$3.85 / Unit
View Datasheet →DSPIC33FJ16MC101-I/SO Maximum Ratings & Electrical Characteristics
| Core | dsPIC33F 16-bit DSC |
| Instruction Rate | 16 MIPS |
| Clock Speed | 40 MHz |
| Flash Program Memory | 16 KB (16K x 8) |
| SRAM | 1 KB |
| Supply Voltage | 3.0 V to 3.6 V |
| I/O Ports | 35 (family max, device-dependent) |
| Package | 20-SOIC (0.295 in / 7.50 mm width) |
| Operating Temperature | -40C to +85C (industrial, -I suffix) |
| Motor Control PWM | High-speed 16-bit MCPWM with complementary outputs |
| Comparators | Up to 4 high-speed comparators |
| CTMU | Charge Time Measurement Unit (touch / time measurement) |
| Peripheral Pin Select (PPS) | Yes |
| ADC | 10-bit / 12-bit ADC (family feature) |
| External Interrupts | 3 (two remappable) |
| I/O Sink/Source Current | 10 mA or 6 mA pin-specific; up to 16 mA or 12 mA non-standard VOH |
| Mounting Type | Surface Mount |
| Lead Free | Yes |
| RoHS Status | Compliant |
| Packaging | Tube |
DSPIC33FJ16MC101-I/SO 20-soic (0.295 in / 7.50 mm width) Pin Configuration Guide
Pin configuration for DSPIC33FJ16MC101-I/SO (20-soic (0.295 in / 7.50 mm width) package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for DSPIC33FJ16MC101-I/SO.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33FJ16MC101-I/SO is suitable for 6 applications: BLDC Motor Drives, Digital Power Supplies and Battery Chargers, PMSM and FOC Servo Drives, Capacitive Touch Interfaces (CTMU), Stepper Motor Control, Sensor Signal Conditioning with DSP.
BLDC Motor Drives
The DSPIC33FJ16MC101-I/SO is purpose-built for Brushless DC (BLDC) motor control: its high-speed 16-bit MCPWM generates complementary outputs with programmable dead time for three-phase bridge driving, while up to four high-speed comparators couple directly into PWM fault inputs for cycle-by-cycle overcurrent shutdown. The 16 MIPS DSP core executes trapezoidal commutation, back-EMF sensing, and PI speed loops with single-cycle MAC throughput. Running from a 3.0 V to 3.6 V supply in a 20-pin SOIC, the device fits compact gate-driver-adjacent placement. At 16 KB Flash, sensorless or Hall-based BLDC firmware with protection layers fits comfortably, and Peripheral Pin Select lets designers route PWM, capture, and interrupt signals to optimal PCB escape points.
Recommended
Digital Power Supplies and Battery Chargers
In digitally controlled AC-DC, DC-DC, and battery-charger stages, the DSPIC33FJ16MC101-I/SO closes the control loop in firmware: the MCPWM module produces phase-shifted or complementary PWM with adjustable dead time, and the on-chip high-speed comparators provide hardware overcurrent limiting with sub-microsecond response, independent of CPU latency. The 16-bit DSP engine implements average-current-mode or peak-current-mode compensators at tens of kHz loop rates using single-cycle MAC instructions. Peripheral Pin Select routes ADC sampling to synchronize with PWM triggers, minimizing switching-noise corruption of measurements. The 3.3 V logic domain and 20-SOIC footprint suit aux-power and low-side controller placement, and 16 KB Flash holds state machines, compensation, and communication with headroom.
Recommended
PMSM and FOC Servo Drives
For Permanent Magnet Synchronous Motor control, the DSPIC33FJ16MC101-I/SO provides the computational substrate for simplified Field-Oriented Control (FOC): the 16-bit modified-Harvard core with dual 40-bit accumulators, single-cycle multiply-accumulate, and barrel shifting executes Clarke/Park transforms and current-loop PI stages efficiently at 16 MIPS. The MCPWM module supplies center-aligned complementary PWM with dead-time insertion for the inverter bridge, while fast comparators form the hardware current-limit safety net. Quadrature encoder or Hall inputs capture rotor position with Peripheral Pin Select flexibility. In a 20-pin SOIC at 3.3 V, it serves low-voltage servo, gimbal, and small robotics applications where full-size DSP solutions are overkill but deterministic motor math is mandatory.
Recommended
Capacitive Touch Interfaces (CTMU)
The integrated Charge Time Measurement Unit (CTMU) makes the DSPIC33FJ16MC101-I/SO a strong fit for capacitive-touch buttons and sliders embedded in appliance and industrial panels. The CTMU measures precise charge time against an internal constant-current source, enabling touch detection without external analog front-ends; the DSP core runs debounce, drift compensation, and multi-key scanning algorithms in the background of the main application. Combined with Peripheral Pin Select, touch channels can be allocated on whatever pins the PCB layout favors. In a 20-pin SOIC at -40C to +85C, one chip can simultaneously run a small motor or actuator and manage touch input, eliminating a dedicated touch controller and reducing BOM cost in cost-sensitive white goods and HVAC controls.
Recommended
Stepper Motor Control
The DSPIC33FJ16MC101-I/SO drives bipolar and unipolar stepper motors with microstepping quality: the MCPWM module generates phase-current sinusoids via PWM, and the 16 MIPS DSP core computes microstep tables and current regulators in real time. Complementary outputs with dead time suit H-bridge drivers, while high-speed comparators provide stall or overcurrent detection feeding PWM fault logic. Output Compare modules support precise step-pulse generation for indexers, and Peripheral Pin Select maps direction/step inputs to convenient pins. With 16 KB Flash and 1 KB SRAM, full profile generators (trapezoidal and S-curve velocity ramps) plus communication fit in the 20-SOIC part, making it ideal for printers, 3D-printer extruders, medical pumps, and lab automation where quiet, accurate motion at 3.3 V logic is required.
Recommended
Sensor Signal Conditioning with DSP
Beyond motors, the dsPIC33FJ16MC101-I/SO functions as a compact sensor-conditioning node: its DSP MAC hardware implements digital filtering (IIR/FIR), the CTMU measures capacitance or time-of-flight for ultrasonic and level sensing, and the 10/12-bit ADC digitizes bridge and ratiometric signals synchronized to PWM or timers via Peripheral Pin Select. Comparators add analog threshold alarms without CPU overhead. The 16 KB Flash accommodates calibration tables, linearization curves, and a serial protocol stack (UART/SPI/I2C remappable across pins). Housed in a 20-pin SOIC over -40C to +85C, the device suits industrial transmitters, HVAC sensors, and battery-management sensing where deterministic DSP math, small size, and low cost matter more than large memory.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33FJ16MC101-I/SO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33FJ16MC101-E/SO | DSPIC33FJ16MC102-I/SO | DSPIC33FJ12MC202-I/SO |
|---|---|---|---|---|
| Package | 20-SOIC (7.50 mm) | 20-SOIC (7.50 mm) - same | 20-SOIC (7.50 mm) - verify pin map | SOIC (wide) - verify pin map |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 16 KB | 16 KB | 16 KB | 12 KB |
| SRAM | 1 KB | 1 KB | 1 KB | 1 KB |
| Performance | 16 MIPS / 40 MHz | 16 MIPS / 40 MHz | 16 MIPS / 40 MHz | 16 MIPS / 40 MHz |
| 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 +125C | -40C to +85C | -40C to +85C |
| Motor Control PWM (MCPWM) | Yes, high-speed with dead time | Yes, identical | Yes, identical | Yes, identical |
Key Differentiators
- Lowest pin count in the dsPIC33FJ motor-control family (vs DSPIC33FJ16MC102-I/SO)
- Extended-temperature option on the identical footprint (vs DSPIC33FJ16MC101-E/SO)
- More flash than the budget family tier (vs DSPIC33FJ12MC202-I/SO)
Design Notes
Decouple VDD with a 0.1 uF ceramic capacitor placed within 5 mm of the VDD pin, plus a 4.7-10 uF bulk capacitor per Microchip's family data sheet layout guidance. The dsPIC33F core draws supply current proportional to clock frequency - at 40 MHz operation budget for the internal regulator and configure the low-voltage detect and brown-out reset thresholds appropriately for a 3.3 V rail with switching-regulator ripple, since comparators used for motor overcurrent must not see supply noise above their hysteresis window.
Keep the PWM outputs and their gate-driver traces physically separated from ADC and CTMU sense traces to prevent switching transients from corrupting analog measurements. Use Peripheral Pin Select to route analog-adjacent digital functions away from sensitive pins. Place the ICSP connector (MCLR, PGD, PGC, VDD, VSS) with short traces so in-circuit debugging with PICkit/ICD tools does not require board rework. A solid ground plane under the DSC and gate driver reduces ground bounce during PWM edges.
Three frequent mistakes with this device: (1) assuming all I/O pins are 5 V-tolerant - the dsPIC33FJ is a 3.0-3.6 V part; check pin tolerance classes in data sheet 70000652f before interfacing legacy 5 V logic. (2) Forgetting to configure the MCLR pin - it must be pulled up (typically 10 kOhm) and can be enabled as a reset input or disabled via configuration bits. (3) Leaving dead-time and PWM-fault comparator settings at defaults, which risks shoot-through in the power bridge; always validate dead time against your gate-driver propagation delays.
Compliance Information
Package described as lead-free plastic in distributor specification summary. Not automotive qualified; confirm current REACH and conflict-minerals declarations on Microchip's compliance portal at order time.
