DSPIC33FJ16MC102T-I/SO - 16-bit DSC 16KB Flash | Microchip
MPN: DSPIC33FJ16MC102T-I/SO ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.45 | $3.45 |
| 10 | $3.15 | $31.50 |
| 100 | $2.73 | $273.00 |
| 500 | $2.55 | $1,275.00 |
| 1,000 | $2.4 | $2,400.00 |
DSPIC33FJ16MC102T-I/SO Overview
A digital signal controller is a hybrid device that merges the deterministic control structure of a microcontroller with the mathematical throughput of a DSP. Within the power-management hierarchy, the dsPIC33F MC family sits between general-purpose MCUs and dedicated motor-control ASICs, offering a single-chip solution for field-oriented control (FOC), sensorless BLDC, and PMSM motor drives.
Key features include up to four high-speed PWM channels with dead-time control, an up-to-4-channel high-speed 12-bit ADC, comparators with direct PWM fault connection, the Charge Time Measurement Unit (CTMU) for capacitive touch and time-based measurement, and Peripheral Pin Select (PPS) for flexible remapping of digital peripherals onto I/O pins.
The dsPIC33F core uses a modified Harvard architecture with a 24-bit instruction word, DSP multiply-accumulate (MAC) instructions with dual operands, a barrel shifter, and hardware division support, enabling single-cycle 16x16 MAC operations essential for control-loop mathematics in motor and power-conversion algorithms.
Typical applications include BLDC and PMSM motor drives, digital power supplies (power-factor correction, LLC control), inverters, and compact embedded control systems where a low pin count and integrated analog reduce board area and BOM cost.
When designing with this device, budget the 1 KB SRAM carefully: field-oriented control with estimator mathematics fits, but adding communication stacks may require the 32 KB variants of the family. Decouple VDD/VDDCORE per the manufacturer datasheet and use the internal FRC oscillator for cost-sensitive designs.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for DSPIC33FJ16MC102T-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 DSPIC33FJ16MC102T-I/SO (same form factor and footprint) — differing in Package, Core Architecture, I/O Sink/Source Current, Maximum CPU Speed, Peripheral Pin Select (PPS).
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33FJ16MC102-I/SO
✅ Drop-In✓ In Stock
$5.1 / Unit
View Datasheet →DSPIC33FJ16MC101-I/SO
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$3.03 / Unit
View Datasheet →DSPIC33FJ32MC102T-I/SO
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$3.3 / Unit
View Datasheet →DSPIC33FJ12MC202T-I/SO
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33FJ16MC102T-E/TL
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33FJ16MC102T-I/SO Maximum Ratings & Electrical Characteristics
| Core | dsPIC33F 16-bit DSC |
| Instruction Rate | 16 MIPS |
| Max Clock Speed | 40 MHz |
| Program Memory | 16 KB Flash |
| SRAM | 1 KB |
| Supply Voltage | 3 V to 3.6 V |
| Operating Temperature | -40C to +85C (I grade) |
| Package | 28-pin SOIC Wide (SO), 300 mil |
| Mounting Type | Surface Mount |
| I/O Ports | Up to 21 I/O on 28-pin package |
| Peripherals | MCPWM, CTMU, PPS, ADC, Comparators |
| High-Speed Comparators | Up to 4 with direct PWM connection |
| ROM Type | Flash |
| Packaging | Tape and Reel (T suffix) |
| Lead Free | Yes |
| Life Cycle Stage | ACTIVE |
DSPIC33FJ16MC102T-I/SO 28-pin soic wide (so), 300 mil Pin Configuration Guide
Pin configuration for DSPIC33FJ16MC102T-I/SO (28-pin soic wide (so), 300 mil 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 DSPIC33FJ16MC102T-I/SO.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33FJ16MC102T-I/SO is suitable for 6 applications: BLDC / PMSM Motor Drives, Digital Power Supplies (PFC / LLC), Inverters and Solar Micro-Inverters, Capacitive Touch Interfaces (via CTMU), Industrial Automation Nodes, Embedded Control OEM / Consumer Equipment.
BLDC / PMSM Motor Drives
The DSPIC33FJ16MC102T-I/SO fits brushless DC and permanent-magnet synchronous motor control because its Motor Control PWM module generates complementary outputs with programmable dead time, and up to four high-speed comparators provide direct PWM fault shutdown without CPU latency. The 16 MIPS dsPIC33F core executes field-oriented control and sensorless observer algorithms using single-cycle 16x16 MAC instructions. In a typical sensorless BLDC drive, the ADC samples phase currents at PWM frequency while the comparator modules handle overcurrent trips in hardware, achieving deterministic protection. The 1 KB SRAM constrains estimator complexity, so simple sliding-mode or BEMF observers fit comfortably; adding full communication stacks may require the 32 KB family variant.
Recommended
Digital Power Supplies (PFC / LLC)
For digital power conversion such as power-factor-correction and LLC resonant converters, the DSPIC33FJ16MC102T-I/SO offers the deterministic PWM resolution and fast analog feedback needed for control loops switching at 100-500 kHz. The high-speed comparators implement cycle-by-cycle current limiting in hardware, while the 12-bit ADC feeds average-current-mode control loops running on the 16 MIPS core. Peripheral Pin Select lets engineers map PWM outputs and analog inputs optimally on the 28-pin SOIC, minimizing board area in compact AC-DC designs. Because the core runs from a 3.0-3.6 V supply, an inexpensive 3.3 V LDO or bias winding regulator completes the controller power tree; budget the 1 KB SRAM for one control loop plus housekeeping.
Recommended
Inverters and Solar Micro-Inverters
Grid-tied and off-grid inverter front ends benefit from the DSPIC33FJ16MC102T-I/SO's combination of DSP mathematics and motor-control-grade PWM. The 40 MHz clock and DSP multiply-accumulate support run sine-wave generation, phase-locked loops, and MPPT algorithms at control-loop rates, while complementary PWM with dead-time insertion safely drives the power stage. High-speed comparators connected directly to the PWM inputs provide hardware-level fault responses to overcurrent events, a critical requirement in energy-conversion equipment. The industrial -40C to +85C rating suits outdoor enclosures. Designers should reserve ADC channels for grid voltage/current sensing and verify comparator trip thresholds against the power stage limits defined in the power-device datasheets.
Recommended
Capacitive Touch Interfaces (via CTMU)
The integrated Charge Time Measurement Unit (CTMU) makes the DSPIC33FJ16MC102T-I/SO suitable for capacitive touch buttons and sliders embedded in appliance and industrial panels, sharing the same silicon as the motor control application. The CTMU measures charge time with sub-nanosecond-class resolution, and Microchip application notes provide the mTouch sensing methodology on this family. Combining touch sensing with motor or power control on one 28-pin SOIC device eliminates a separate touch controller, reducing BOM cost and board area. Software must time-multiplex CTMU scans with the main control loop; because the 1 KB SRAM limits per-channel filtering buffers, limit the touch matrix to a modest number of keys for stable performance.
Recommended
Industrial Automation Nodes
In factory automation, the DSPIC33FJ16MC102T-I/SO serves as a compact actuator and sensor node controller: 16 MIPS handles control tasks while Peripheral Pin Select remaps UART/SPI/I2C onto flexible pins to fit existing harness designs. The industrial temperature grade of -40C to +85C covers cabinet and floor environments, and the 28-pin SOIC wide package with 300 mil row spacing fits cost-sensitive two-layer boards. Typical nodes drive small motors, solenoids, or valves while reporting over UART or CAN. Flash self-programming supports field firmware updates. Ensure the 3.3 V supply is derived from an industrial-grade regulator with surge protection, and use the internal comparators as low-latency limit guards for actuator over-travel conditions.
Recommended
Embedded Control OEM / Consumer Equipment
For OEM products requiring a low-cost single-chip controller - pumps, fans, small compressors, and benchtop instruments - the DSPIC33FJ16MC102T-I/SO delivers DSP-grade control at MCU pricing (approximately $2.73 in volume as of 2026-09-27). The ultra-low-cost positioning stated by Microchip, combined with small-footprint 28-pin packaging and Tape and Reel supply for automated assembly, makes it attractive for high-volume consumer and light-industrial products. Internal fast RC oscillator options remove the external crystal in closed-loop motor applications, cutting component count further. Development uses Microchip MPLAB X IDE with free compiler tiers, and the same family scales upward in Flash without PCB redesign, protecting the mechanical and layout investment across product tiers.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33FJ16MC102T-I/SO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33FJ16MC102-I/SO | DSPIC33FJ16MC101-I/SO | DSPIC33FJ32MC102T-I/SO | DSPIC33FJ12MC202T-I/SO |
|---|---|---|---|---|---|
| Package | 28-SOIC Wide (SO) | 28-SOIC Wide (SO) - same | 28-SOIC Wide (SO) - same | 28-SOIC Wide (SO) - same | 28-SOIC Wide (SO) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Program Memory | 16 KB | 16 KB | 16 KB | 32 KB | 12 KB |
| Performance | 16 MIPS | 16 MIPS | 16 MIPS | 16 MIPS | 16 MIPS |
| 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 | 3.0 V to 3.6 V |
| Motor Control Peripherals | MCPWM, 4 comparators, CTMU, PPS | MCPWM, 4 comparators, CTMU, PPS | Reduced set (fewer comparators, no CTMU) | MCPWM, 4 comparators, CTMU, PPS | Basic PWM set |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
Key Differentiators
- Motor-control peripheral richness at 16 KB class (vs DSPIC33FJ12MC202T-I/SO)
- Memory upgrade path on the same footprint (vs DSPIC33FJ32MC102T-I/SO)
- Single-chip integration of touch and control (vs DSPIC33FJ16MC101-I/SO)
Design Notes
The dsPIC33F family operates from a 3.0-3.6 V supply and generates its internal core voltage (VDDCORE). Fit the exact decoupling capacitance called out in the manufacturer datasheet on VDD and VDDCORE - typically a 0.1 uF ceramic per pin pair plus bulk capacitance. In motor drive boards, place the controller supply away from gate-driver switching loops; a ferrite bead plus bulk capacitor on VDD suppresses conducted switching noise that can corrupt ADC current samples.
Do not exceed the 3.6 V maximum supply, and never connect 5 V logic directly to I/O. Budget SRAM carefully: 1 KB accommodates FOC with basic observers, but full CAN stacks plus sensorless estimators may overflow - use the linker map to verify. When migrating firmware from DSPIC33FJ12MC202, check that comparator and CTMU features assumed in code exist on the target die before committing the PCB.
Use Peripheral Pin Select (PPS) to route PWM outputs and analog inputs away from noisy power-stage traces, exploiting the flexibility of the 28-pin SOIC. Keep the ADC current-sense input traces short and paired with a ground return; sample synchronization with the MCPWM trigger gives clean instantaneous current readings. Provide the standard 300 mil SOIC land pattern with thermal relief-free ground connections for oscillator and analog grounds per Microchip layout application notes.
Compliance Information
Lead-free plastic package stated in datasheet summary (digchip). REACH, halogen-free and conflict-minerals declarations available on request from Microchip product page.
