DSPIC33FJ32MC102T-I/ML - 16-bit DSC 16 MIPS 32KB Flash | Microchip
MPN: DSPIC33FJ32MC102T-I/ML ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.32 | $3.32 |
| 10 | $2.98 | $29.80 |
| 100 | $2.68 | $268.00 |
| 500 | $2.42 | $1,210.00 |
| 1,000 | $2.18 | $2,180.00 |
DSPIC33FJ32MC102T-I/ML Overview
A Digital Signal Controller combines the compute capability of a DSP core with the peripheral integration and ease of use of a microcontroller. Within the embedded hierarchy, the DSC sits between general-purpose MCUs and dedicated DSPs: it executes DSP-class instructions (barrel shifter, multiply-accumulate, modulo addressing) while retaining microcontroller peripherals such as UART, SPI, I2C, and timers, making it a natural fit for closed-loop power conversion and motion control systems.
Key features include the dsPIC33F 16-bit core running at up to 16 MIPS (32MHz), motor control PWM (MCPWM) outputs with complementary modes and dead-time control, an 8-channel 10-bit ADC, and Peripheral Pin Select (PPS) that remaps digital peripherals onto flexible RP pins. The Charge Time Measurement Unit (CTMU) supports capacitive touch and precision timing measurements.
Architecturally, the device uses a modified Harvard bus with a 24-bit instruction word, a 17x17 single-cycle hardware multiplier, a 40-bit accumulator DSP engine, and two address generation units. Flash is self-programmable, supporting field firmware updates, and the part offers multiple low-power modes including Idle and Doze for energy-sensitive designs.
Typical applications include brushless DC (BLDC) and PMSM motor drives, power inverters, digital power supplies (LLC, boost, PFC stages), and embedded control in industrial appliances, all cases where the hardware MCPWM with fault inputs and fast ADC synchronization provide deterministic closed-loop control.
Design consideration: the 28-QFN exposed pad acts as the primary VSS/thermal path, so it must be soldered to a grounded copper pour; at 16 MIPS, ensure the 3.3V rail is decoupled with 0.1uF ceramics at both VDD pins and place the MCPWM gate-driver traces short to limit ringing.
This page consolidates verified distributor data, drop-in same-package alternatives, pricing tiers, pinout information, and practical design notes not found in a single manufacturer datasheet.
Drop-in alternatives for DSPIC33FJ32MC102T-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 DSPIC33FJ32MC102T-I/ML (same form factor and footprint) — differing in Package, Program Memory Size, RAM Size, Supply Voltage Range.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33FJ32MC102-E/ML
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33FJ32MC102-H/ML
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33FJ32MC101-I/ML
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33FJ16MC102-I/ML
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33FJ32MC302-I/ML
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP32MC202-I/ML
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33FJ32MC102T-I/ML Maximum Ratings & Electrical Characteristics
| Core Processor | dsPIC33F 16-bit |
| Core Size | 16-bit |
| Speed (MIPS) | 16 MIPS |
| Maximum Clock Frequency | 32 MHz |
| Program Memory Size | 32KB (11K x 24) Flash |
| RAM Size | 2KB |
| Supply Voltage Range | 3.0 V to 3.6 V |
| Operating Temperature | -40C to +85C (I grade) |
| Package | 28-VQFN Exposed Pad (6x6 mm) |
| Mounting Type | Surface Mount |
| Connectivity | I2C, SPI, UART/USART, IrDA, LIN |
| Peripherals | Motor Control PWM, CTMU, PPS, PWM |
| Number of I/O | 21 |
| ADC Resolution | 10-bit |
| Data Converters | A/D 8x10-bit |
| Program Memory Type | FLASH (self-programmable) |
| DSP Engine | 17x17 multiplier, 40-bit accumulator, barrel shifter |
| Oscillator Type | Internal + External (XT, HS, EC) |
DSPIC33FJ32MC102T-I/ML Pin Configuration
| Pin 1 | MCLR — Master clear reset input / programming voltage |
| Pin 2 | AN0/VREF+/CN2/RB0 — Analog input 0 / positive voltage reference |
| Pin 3 | AN1/VREF-/CN3/RB1 — Analog input 1 / negative voltage reference |
| Pin 4 | AN2/SS1/CN4/RB2 — Analog input 2 / SPI slave select / change notification |
| Pin 5 | AN3/INDX/CN5/RB3 — Analog input 3 / encoder index input |
| Pin 6 | AN4/QEA/IC7/CN6/RB4 — Analog input 4 / encoder phase A / input capture 7 |
| Pin 7 | VDD — Positive supply (3.0V to 3.6V) |
| Pin 8 | VSS — Ground reference |
| Pin 9 | OSC1/CLKI/CN7/RA2 — Oscillator input / external clock input |
| Pin 10 | OSC2/CLKO/ECOUT/CN8/RA3 — Oscillator output / external clock output |
| Pin 11 | AN5/QEB/IC8/CN9/RB5 — Analog input 5 / encoder phase B / input capture 8 |
| Pin 12 | AN6/PWM1L1/RP0/RB6 — Analog input 6 / motor PWM output / remappable RP0 pin |
| Pin 13 | AN7/PWM1H1/RP1/RB7 — Analog input 7 / motor PWM output / remappable RP1 pin |
| Pin 14 | VSS — Ground reference |
| Pin 15 | AN8/PWM1L2/RP2/RB8 — Analog input 8 / motor PWM output / remappable RP2 pin |
| Pin 16 | AN9/PWM1H2/RP3/RB9 — Analog input 9 / motor PWM output / remappable RP3 pin |
| Pin 17 | AN10/PWM1L3/RP4/RB10 — Analog input 10 / motor PWM output / remappable RP4 pin |
| Pin 18 | AN11/PWM1H3/RP5/RB11 — Analog input 11 / motor PWM output / remappable RP5 pin |
| Pin 19 | TMS/AN12/RP6/RB12 — JTAG test mode select / analog input / RP6 |
| Pin 20 | TCK/AN13/RP7/RB13 — JTAG test clock / analog input / RP7 |
| Pin 21 | TDI/AN14/RP8/RB14 — JTAG test data in / analog input / RP8 |
| Pin 22 | TDO/AN15/RP9/RB15 — JTAG test data out / analog input / RP9 |
| Pin 23 | VDD — Positive supply (3.0V to 3.6V) |
| Pin 24 | SDA1/RP10 — I2C data 1 / remappable RP10 pin |
| Pin 25 | SCL1/RP11 — I2C clock 1 / remappable RP11 pin |
| Pin 26 | VSS — Ground reference |
| Pin 27 | U1RX/RP26 — UART1 receive default / remappable input pin |
| Pin 28 | U1TX/RP25 — UART1 transmit default / remappable output pin |
Typical Applications
DSPIC33FJ32MC102T-I/ML is suitable for 6 applications: BLDC / PMSM Motor Control, Digital Power Supplies (PFC / LLC / Boost), Industrial Appliance Control, Power Inverters and Solar Micro-Inverters, Automotive and E-Bike Auxiliary Control (non-safety), Embedded Sensor Nodes and Data Logging.
BLDC / PMSM Motor Control
The DSPIC33FJ32MC102T-I/ML is purpose-built for brushless DC and permanent-magnet synchronous motor drives. Its dedicated motor control PWM module generates up to three complementary output pairs with programmable dead-time insertion and a hardware fault input (FLTA) that trips outputs in nanoseconds on overcurrent events - protection that software loops cannot match for speed. The 16 MIPS dsPIC33F core with a single-cycle 17x17 MAC executes field-oriented control (FOC) or sensorless back-EMF algorithms, synchronized to the 8-channel 10-bit ADC via automatic conversion triggers tied to PWM events. With 32KB Flash and 2KB RAM, complete FOC plus communication fits comfortably. The 28-QFN 6x6 mm footprint suits compact drive boards, and Peripheral Pin Select lets gate-driver feedback routing adapt across board revisions without PCB respins.
Recommended
Digital Power Supplies (PFC / LLC / Boost)
For switched-mode power conversion, the DSPIC33FJ32MC102T-I/ML closes voltage and current loops digitally. The motor control PWM runs at converter switching frequencies with dead-time control suitable for half-bridge LLC and synchronous-rectification topologies, while the fast 10-bit ADC samples feedback synchronized to PWM edges, minimizing ripple aliasing in the control loop. The 16 MIPS DSP engine implements PID or predictive compensators with deterministic cycle time, and the hardware fault input provides cycle-by-cycle overcurrent shutdown. At 3.0-3.6V operation with 2KB RAM, non-isolated PFC or DC-DC stages are handled within the 28-QFN package's small footprint. Estimated control-loop latency stays in the single-microsecond class at 16 MIPS, adequate for converters switching at up to several hundred kHz with average-current-mode control.
Recommended
Industrial Appliance Control
In appliances such as fans, pumps, compressors, and power tools, the DSPIC33FJ32MC102T-I/ML combines motor control and user interface in one low-pin-count device. The Charge Time Measurement Unit (CTMU) supports capacitive touch buttons without a separate touch controller, while UART, SPI, and I2C - remappable via Peripheral Pin Select - connect to displays, EEPROM, and LIN-based appliance buses. The industrial -40C to +85C temperature grade suits enclosed motor-driven products, and the self-programmable 32KB Flash enables field firmware updates during service. The 28-QFN 6x6 mm exposed-pad package keeps PCB area small in cost-driven appliance boards; its exposed pad should be soldered to a grounded pour for both signal integrity and thermal relief in hot motor compartments.
Recommended
Power Inverters and Solar Micro-Inverters
Grid-tied micro-inverter and small inverter boards benefit from the DSPIC33FJ32MC102T-I/ML's synchronized PWM/ADC architecture. Complementary PWM outputs drive half-bridge stages through gate drivers, dead-time registers prevent shoot-through, and the FLTA fault input implements hardware overcurrent shutdown independent of software state. The 16 MIPS core executes maximum-power-point tracking (MPPT) algorithms and sinusoidal reference generation using the DSP multiply-accumulate engine, while the 10-bit ADC reads grid voltage, current, and DC-link feedback on PWM-triggered conversions. I2C and UART support per-panel monitoring links. With 32KB Flash, MPPT plus safety and communication code fits in one 28-QFN device, and the -40C to +85C industrial grade covers rooftop junction-box temperature swings.
Recommended
Automotive and E-Bike Auxiliary Control (non-safety)
For non-safety automotive functions such as e-bike traction control, window lift, pump, and blower drives, the DSPIC33FJ32MC102 family - particularly the E-grade -40C to +125C variants in the same 28-QFN footprint - provides motor control PWM with hardware fault protection and LIN connectivity via its UART with LIN support. The 16-bit DSP engine runs sensorless BLDC commutation, and the CTMU can measure resistive sensor elements such as NTC temperature probes with high resolution without an external ADC. Note that the standard DSPIC33FJ32MC102T-I/ML is I-grade (-40C to +85C); for AEC-Q-relevant environments select the E-grade equivalent and complete your own qualification, since pinout and footprint remain identical.
Recommended
Embedded Sensor Nodes and Data Logging
Beyond motor control, the DSPIC33FJ32MC102T-I/ML serves as a compact sensor-acquisition controller. The 8-channel 10-bit ADC with up to 500 ksps class sampling captures multi-sensor inputs, the CTMU adds precise time and capacitance measurement for resistive/capacitive sensing, and I2C plus SPI connect digital sensors and SD-card-class storage through Peripheral Pin Select routing. The 16 MIPS core applies DSP filtering (FIR/IIR) directly on sampled data before transmission via UART. Idle and Doze low-power modes reduce average consumption in battery-powered loggers, and the 32KB self-programmable Flash stores calibration tables or small data sets. The 28-QFN 6x6 mm package suits dense multi-sensor boards; place 0.1uF decoupling at both VDD pins for ADC noise performance.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33FJ32MC102T-I/ML — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33FJ32MC102-E/ML | DSPIC33FJ32MC101-I/ML | DSPIC33FJ16MC102-I/ML | DSPIC33EP32MC202-I/ML |
|---|---|---|---|---|---|
| Package | 28-VQFN (6x6 mm) Exposed Pad | 28-VQFN (6x6 mm) - same | 28-VQFN (6x6 mm) - same | 28-VQFN (6x6 mm) - same | 28-QFN - same footprint class |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core / Performance | dsPIC33F, 16 MIPS | dsPIC33F, 16 MIPS | dsPIC33F, 16 MIPS | dsPIC33F, 16 MIPS | dsPIC33EP, 60 MIPS |
| Program Flash | 32KB (11K x 24) | 32KB (11K x 24) | 16KB (5.5K x 24) | 16KB (5.5K x 24) | 32KB |
| RAM | 2KB | 2KB | 2KB | 2KB | 2KB |
| Temperature Range | -40C to +85C (I grade) | -40C to +125C (E grade) | -40C to +85C | -40C to +85C | -40C to +85C |
| Motor Control PWM | Yes (MCPWM, dead-time, FLTA) | Yes | Yes | Yes | Yes (EP-generation MCPWM) |
| 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 |
| Firmware Compatibility | Reference (dsPIC33FJ MC102) | 100% - same die | Code-size dependent (<16KB) | Code-size dependent (<16KB) | Port required (EP register map) |
Key Differentiators
- Full 32KB Flash in a 28-pin package (vs DSPIC33FJ32MC101-I/ML)
- Extended-temperature drop-in available (vs DSPIC33FJ32MC102-E/ML)
- Generation-performant upgrade path (vs DSPIC33EP32MC202-I/ML)
Design Notes
The 28-QFN exposed pad is the primary ground connection of the DSPIC33FJ32MC102T-I/ML and must be soldered to a grounded copper pour with an array of thermal vias. Do not leave the pad floating for hand-solder convenience - VSS pin connectivity alone is insufficient for reliable operation and noise performance. Place 0.1uF ceramic decoupling capacitors within 2 mm of both VDD pins (7 and 23), and one 2.2uF-10uF bulk capacitor near the device. Keep the MCLR line with a 10k pull-up and place the ICSP programming header (PGEC/PGED, remappable) accessibly.
Peripheral Pin Select (PPS) registers lock after the initial mapping unless unlocked deliberately - write the unlock sequence (0x55/0xAA to OSCCON low byte) before each RPINR/RPOR write. Second, configuration bits (FOSC, FWDT, FPOR) are stored in Flash and set at programming time: wrong oscillator config (e.g., XT selected with no crystal) leaves the device silent with a valid binary. Third, analog inputs default to analog mode (AD1PCFGL=0); RB pins used as digital outputs must be switched to digital via AD1PCFGL or they will read 0 and drive weakly.
Operating from a 3.3V rail, keep the supply within 3.0V-3.6V at all times; brown-out below roughly 2.7V can cause flash corruption during self-write, so enable the internal brown-out reset (BOR) in configuration and add a 10uF bulk capacitor to ride through rail dips. Estimated: at 16 MIPS the device draws in the tens-of-mA class per the family datasheet current-versus-MIPS curve - budget regulator headroom accordingly, and use Idle/Doze modes in polling-heavy firmware to cut average current significantly in battery-powered designs.
When using the motor control PWM to drive external gate drivers, route PWM1L/H pairs as matched-length traces and keep them away from ADC feedback lines (AN0-AN15 share the same port). The 10-bit ADC benefits from a low-impedance source; when measuring motor currents through shunts, add an RC anti-alias filter (estimated 1k + 1nF gives ~160 kHz corner) and trigger conversions synchronized to the PWM center to avoid switching-noise sampling. Ground the analog reference (VREF+) separately at the regulator, not at the power-ground entry point.
Compliance Information
Standard Microchip lead-free/RoHS product offering per distributor listings; obtain REACH and conflict-minerals declarations from Microchip environmental documents for formal submissions.
