DSPIC33FJ32MC102T-I/TL - 16-bit DSC 32KB Flash Motor Control | Microchip
MPN: DSPIC33FJ32MC102T-I/TL ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.95 | $4.95 |
| 10 | $4.45 | $44.50 |
| 100 | $3.95 | $395.00 |
| 500 | $3.55 | $1,775.00 |
| 1,000 | $3.2 | $3,200.00 |
DSPIC33FJ32MC102T-I/TL Overview
A digital signal controller combines the compute throughput of a DSP with the peripheral integration and ease of use of a microcontroller. Within the power-management hierarchy, a DSC sits above a general-purpose MCU (such as a PIC18) and below a full DSP or FPGA, offering single-cycle MAC instructions, DSP engine addressing modes, and deterministic interrupt latency that closed-loop control systems demand.
Key features include motor control PWM (MCPWM) peripherals with complementary outputs and dead-time insertion, three analog comparators, a Charge Time Measurement Unit (CTMU), an RTCC real-time clock/calendar, and Peripheral Pin Select (PPS) for flexible I/O remapping. Interfaces include I2C, SPI, UART/USART, and IrDA, enabling flexible communication in embedded systems.
The dsPIC33F core executes an modified Harvard architecture with a 16-bit data path and 24-bit instruction words, supporting DSP multiply-accumulate and divide operations needed for field-oriented control (FOC), sensorless BLDC algorithms, and power-conversion loops. The analog front end includes a 10-bit ADC supporting simultaneous sampling for three-phase current sensing.
Typical applications include BLDC and PMSM motor drives, AC-DC and DC-DC power supplies, digital lighting ballasts, and embedded industrial control.
When designing, note the 3.0V to 3.6V supply requirement and plan PCB thermal relief on the exposed pad for PWM-heavy loads.
This page synthesizes distributor data, drop-in alternatives, and design guidance not found in the manufacturer datasheet.
Drop-in alternatives for DSPIC33FJ32MC102T-I/TL — 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/TL (same form factor and footprint) — differing in Package, Peripheral Pin Select (PPS), Program Memory Size, RAM Size, Supply Voltage Range.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33FJ32MC102T-I/ML
✅ Drop-In✓ In Stock
$2.18 / Unit
View Datasheet →DSPIC33FJ32MC102T-E/TL
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33FJ32MC102-I/TL
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33FJ32MC102-E/TL
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33FJ32MC102T-I/SO
✅ Drop-In✓ In Stock
$3.3 / Unit
View Datasheet →DSPIC33FJ32MC102T-I/TL Maximum Ratings & Electrical Characteristics
| Core | dsPIC33F 16-bit DSC core |
| Program Memory Size | 32 KB (11K x 24) Flash |
| RAM Size | 2 KB |
| Speed (Instruction) | 16 MIPS |
| Oscillator | 16 MHz (32 MHz clock family per web data) |
| Supply Voltage Range | 3 V to 3.6 V |
| Interfaces | I2C, SPI, IrDA, UART/USART |
| Motor Control PWM | MCPWM peripheral (per web data) |
| Comparators | 3 |
| CTMU | Yes (Charge Time Measurement Unit) |
| RTCC | Yes (Real-Time Clock and Calendar) |
| Peripheral Pin Select (PPS) | Yes |
| Package | 36-VTLA (5x5 mm) with exposed pad |
| Operating Temperature | -40C to +85C (I grade) |
| Mounting Type | Surface Mount |
| Number of Pins | 36 |
| ADC | 10-bit ADC (per Microchip USA listing for family) |
DSPIC33FJ32MC102T-I/TL 36-vtla (5x5 mm) with exposed pad Pin Configuration Guide
Pin configuration for DSPIC33FJ32MC102T-I/TL (36-vtla (5x5 mm) with exposed pad 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 DSPIC33FJ32MC102T-I/TL.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33FJ32MC102T-I/TL is suitable for 6 applications: BLDC/PMSM Motor Control, Digital Power Supplies (AC-DC / DC-DC), Electronic Lighting Ballasts, Sensorless Control with CTMU Sensing, Industrial Embedded Control Nodes, Automotive Auxiliary Motor Systems.
BLDC/PMSM Motor Control
The DSPIC33FJ32MC102T-I/TL fits brushless DC and permanent-magnet synchronous motor drives through its dedicated MCPWM peripheral with complementary outputs, dead-time insertion, and hardware fault inputs, plus three analog comparators for overcurrent protection. The 16 MIPS DSP core with single-cycle MAC instructions runs field-oriented control (FOC) and sensorless back-EMF observer algorithms within typical 10-20 kHz control loop periods. In a typical topology, the DSC reads phase currents via the 10-bit ADC, computes the FOC transform, and drives a three-phase inverter gate-driver stage such as the Microchip MCP802x or discrete gate drivers. Peripheral Pin Select lets designers route PWM and input-capture signals to optimal pins on the compact 36-pin VTLA (5x5 mm) footprint, reducing PCB layers in cost-sensitive drives such as fans, pumps, power tools, and e-bike controllers.
Recommended
Digital Power Supplies (AC-DC / DC-DC)
Switched-mode power supplies benefit from the DSPIC33FJ32MC102T-I/TL combination of fast 16 MIPS control bandwidth, MCPWM with adjustable dead time, and analog comparators that implement cycle-by-cycle current limiting in hardware with microsecond response. The 10-bit ADC samples output voltage and current feedback for voltage-mode or average-current-mode control loops executed in software, achieving regulation and transient response comparable to dedicated digital power ICs while retaining full firmware flexibility for soft-start, burst mode, and fault handling. The CTMU adds precise time-charge measurement usable for sensor interfacing and timing calibration. The 3.0V to 3.6V supply simplifies rail architecture in bias circuits. Place the controller near the gate-driver stage with short PWM traces to minimize ringing, and use the exposed pad as a low-inductance ground reference for the analog front end.
Recommended
Electronic Lighting Ballasts
Digital ballasts for fluorescent, HID, and LED lighting demand precise frequency control, phase management, and protection, all of which the DSPIC33FJ32MC102T-I/TL delivers in a 5x5 mm package. The MCPWM generates the high-frequency resonant converter drive (typically 25-100 kHz) with programmable dead time, while the three comparators provide fast lamp-fault and overcurrent shutdown independent of CPU latency. The RTCC supports scheduled dimming and time-of-use logic without an external RTC IC, saving BOM cost. The 16 MIPS core executes lamp-power regulation and ignition sequencing algorithms in firmware, allowing one platform across product power levels. With 32 KB of Flash, multiple lamp profiles and communication firmware (UART-based dimming) fit comfortably. The industrial -40C to +85C rating matches luminaire ambient conditions inside sealed housings where derating matters.
Recommended
Sensorless Control with CTMU Sensing
The Charge Time Measurement Unit (CTMU) on the DSPIC33FJ32MC102T-I/TL enables precise relative time and charge measurements, useful for capacitive touch interfaces, current-sense calibration, and ultrasonic proximity sensing embedded within control products. Combined with the 10-bit ADC and three comparators, the CTMU supports sensorless motor startup strategies and touch-activated user interfaces on the same die, eliminating a separate touch controller in appliance and consumer applications. The 16 MIPS DSP core filters CTMU readings and drives the MCPWM outputs in one integrated loop. Peripheral Pin Select allows the CTMU channel and PWM outputs to be mapped for optimal PCB routing on the 36-pin VTLA (5x5 mm) package. Designers should keep CTMU sense traces short and guarded, and reference Microchip's CTMU application notes for charge-injection compensation techniques.
Recommended
Industrial Embedded Control Nodes
Factory automation nodes, HVAC controllers, and pump-control units use the DSPIC33FJ32MC102T-I/TL as an integrated control and communication processor. The UART/USART with IrDA support, SPI, and I2C interfaces connect to displays, EEPROMs, sensors, and field buses, while Peripheral Pin Select remaps these functions to fit dense 36-pin layouts. The RTCC provides timestamping for event logs and scheduling; the three comparators handle hardware-level threshold monitoring. With 32 KB Flash and 2 KB RAM, a PID control loop plus a Modbus-style UART protocol stack fits in a single device, replacing an MCU-plus-RTC-plus-comparator multi-chip solution and lowering BOM cost. The industrial -40C to +85C rating suits unconditioned enclosures. Use the exposed thermal pad soldered to a ground pour for reliability under vibration and thermal cycling typical of industrial environments.
Recommended
Automotive Auxiliary Motor Systems
For automotive auxiliary drives - window lifters, HVAC blowers, fuel pumps, throttle actuators - the AEC-Q100 qualified DSPIC33FJ32MC102T-E/TL variant in the identical 36-VTLA (5x5 mm) package provides the same 16 MIPS, 32 KB Flash, and 2 KB RAM with a -40C to +125C rating per Microchip USA. The MCPWM with dead-time control and hardware fault inputs meets the safety requirements of brushed and BLDC auxiliary drives, while comparators implement fast overcurrent protection. The 3.0V to 3.6V supply accommodates regulated automotive rails. Designers should implement watchdog supervision and practice Brown-out configuration in firmware, and follow AEC-Q100 qualified assembly processes. Drop-in substitution between the -I and -E grades on the same PCB lets one layout serve both consumer and automotive product lines with minimal redesign effort.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33FJ32MC102T-I/TL — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33FJ32MC102T-I/ML | DSPIC33FJ32MC102T-E/TL | DSPIC33FJ32MC102-I/TL | DSPIC33FJ32MC102-E/TL |
|---|---|---|---|---|---|
| Package | 36-VTLA (5x5 mm) QFN, exposed pad | 36-pin QFN-S family (same die) | 36-VTLA (5x5 mm) - same | 36-VTLA (5x5 mm) - same | 36-VTLA (5x5 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory (Flash) | 32 KB (11K x 24) | 32 KB (11K x 24) | 32 KB (11K x 24) | 32 KB (11K x 24) | 32 KB (11K x 24) |
| RAM | 2 KB | 2 KB | 2 KB | 2 KB | 2 KB |
| Performance | 16 MIPS | 16 MIPS | 16 MIPS | 16 MIPS | 16 MIPS |
| Temperature Range | -40C to +85C (I grade) | -40C to +85C | -40C to +125C (E grade) | -40C to +85C | -40C to +125C (E grade) |
| Automotive Qualification | No (industrial grade) | No | Yes (AEC-Q100) | No | Yes (AEC-Q100, per Microchip USA) |
| Packaging Format | Tape & Reel (T suffix) | Tape & Reel | Tape & Reel | Tube/Tray (non-T) | Tube/Tray (non-T) |
Key Differentiators
- Motor-control-optimized peripheral set in a 36-pin low-pin-count package (vs DSPIC33FJ32MC102T-I/SO)
- Industrial -40C to +85C rating at standard cost (vs DSPIC33FJ32MC102T-E/TL)
- Tape-and-reel readiness for automated assembly (vs DSPIC33FJ32MC102-I/TL)
Design Notes
The DSPIC33FJ32MC102T-I/TL operates from a strict 3.0V to 3.6V supply - it is not 5V tolerant like PIC18 parts. Provide a clean 3.3V rail with a local 0.1uF ceramic decoupling capacitor plus a 4.7-10uF bulk capacitor per Microchip power-dispersal guidelines, placed within 5 mm of the VDD pins. Level-shift any 5V logic interfaces (legacy UART sensors, 5V displays) before connecting to I/O pins. Verify brown-out and MCLR supervision settings in configuration words for reliable startup on noisy industrial rails.
The 36-VTLA (5x5 mm) QFN has an exposed thermal pad that must be soldered to a ground pour for electrical grounding and thermal dissipation - do not leave it unsoldered. Use a 3x3 via array under the pad to the ground plane per Microchip QFN layout application notes. Because Peripheral Pin Select (PPS) remaps digital functions, finalize pin mapping early to keep PWM traces short to the gate-driver stage and route analog inputs (comparators, ADC) away from PWM switching nodes to preserve measurement accuracy.
Confirm the exact land pattern before substituting package-code variants: /TL (36-VTLA) and /ML (QFN-S) outline drawings differ slightly even though the die is identical, and Microchip notes that not all pins or features are implemented on every pinout configuration - always cross-check the 36-pin diagram in datasheet 70000652f. Additionally, the -I grade is rated to +85C only; for enclosed motor drives exceeding this, select the AEC-Q100 -E/TL variant rated to +125C rather than derating the I grade beyond its specification.
Compliance Information
The -I/TL industrial grade is not AEC-Q100 qualified; the -E/TL variant is qualified to AEC-Q100 per Microchip USA. RoHS/REACH status should be confirmed on the Microchip product page before ordering.
