DSPIC33FJ16MC304-I/PT - 16-bit Motor Control DSC | Microchip
MPN: DSPIC33FJ16MC304-I/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $7.02 | $7.02 |
| 10 | $6.55 | $65.50 |
| 100 | $5.95 | $595.00 |
| 500 | $5.45 | $2,725.00 |
| 1,000 | $4.98 | $4,980.00 |
DSPIC33FJ16MC304-I/PT Overview
A Digital Signal Controller blends a microcontroller (MCU) with Digital Signal Processor (DSP) functionality in a single chip. In the power-management hierarchy, the dsPIC33F family sits above general-purpose 8-bit MCUs and beside the dsPIC30F (5 V) family, offering 3.3 V operation and more on-chip memory for embedded control applications that need both real-time control loops and DSP math.
Key features include two high-speed PWM generators with independent timebases for motor drive topologies, up to four high-speed analog comparators with direct connection to the PWM for fast overcurrent shutdown, Peripheral Pin Select (PPS) for flexible pin mapping, and an on-chip ADC. The 40 MIPS core executes DSP instructions such as MAC and multiply operations with 24-bit program memory width.
Architecturally, the device pairs a 16-bit MCU core with DSP engine enhancements: dual 40-bit accumulators, hardware division support, and deterministic interrupt latency that suits closed-loop current control at PWM frequencies of tens of kilohertz. Flash-based program memory enables field firmware updates, and the 2 KB SRAM supports control-state data and communication buffers.
Typical applications include Brushless DC (BLDC) and Permanent Magnet Synchronous Motor (PMSM) drives, power-factor-correction converters, digital power supplies, and embedded industrial automation nodes where motor control and DSP filtering coexist.
Design consideration: operate from a 3.0 V to 3.6 V supply and budget the 44-pin TQFP (10 x 10 mm) land pattern with exposed thermal relief via solid ground planes; the MCLR pin requires the recommended pull-up and capacitor network per the family reference design.
This page synthesizes verified distributor data, drop-in family alternatives, application guidance, and long-tail selection information not consolidated in the manufacturer datasheet.
Drop-in alternatives for DSPIC33FJ16MC304-I/PT — 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 DSPIC33FJ16MC304-I/PT (same form factor and footprint) — differing in Core Architecture, PWM Generators, Mounting Type, Analog Comparators, I/O Ports.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33FJ16MC304-H/PT
✅ Drop-In✓ In Stock
$3.72 / Unit
View Datasheet →DSPIC33FJ16MC304-E/PT
✅ Drop-In✓ In Stock
$3.45 / Unit
View Datasheet →DSPIC33FJ32MC204-I/PT
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33FJ16MC304T-I/PT
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33FJ16MC304-I/ML
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33FJ16MC304-I/PT Maximum Ratings & Electrical Characteristics
| Core Architecture | 16-bit DSC (MCU + DSP) |
| Maximum Clock Speed | 40 MHz (40 MIPS) |
| Program Memory (Flash) | 16 KB |
| Program Memory Width | 24-bit |
| SRAM | 2 KB |
| Supply Voltage Range | 3 V to 3.6 V |
| Number of I/O | 35 |
| PWM Generators | 2 high-speed with independent timebases |
| Analog Comparators | Up to 4 high-speed |
| Operating Temperature | -40C to +85C (Industrial) |
| Package | 44-pin TQFP (PT), 10 x 10 mm, 1 mm height |
| Mounting Type | Surface Mount (gull-wing) |
| Special Peripherals | Peripheral Pin Select (PPS) |
| RoHS Status | Compliant |
| Lead Free | Yes |
| Lifecycle Stage | Active |
DSPIC33FJ16MC304-I/PT 44-pin tqfp (pt), 10 x 10 mm, 1 mm height Pin Configuration Guide
Pin configuration for DSPIC33FJ16MC304-I/PT (44-pin tqfp (pt), 10 x 10 mm, 1 mm height 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 DSPIC33FJ16MC304-I/PT.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33FJ16MC304-I/PT is suitable for 6 applications: BLDC Motor Drives, PMSM Field-Oriented Control, Digital Power Supplies, Power Factor Correction, Industrial Automation and Sensing Nodes, Embedded Motor-Control Development and Education.
BLDC Motor Drives
The DSPIC33FJ16MC304-I/PT is purpose-built for Brushless DC motor control. Its two high-speed PWM generators with independent timebases drive three-phase inverter bridges with complementary or independent PWM pairs, while up to four high-speed comparators wired directly to the PWM module provide cycle-by-cycle overcurrent shutdown without CPU intervention. The 40 MIPS core with DSP MAC instructions executes Clarke/Park transforms and PI current loops well within PWM periods of 20 kHz or higher. With 16 KB Flash, complete sensored or sensorless trapezoidal and FOC firmware fits on-chip. Place the controller between gate drivers and feedback dividers with short PWM traces to limit ringing; Peripheral Pin Select lets you route PWM outputs to the cleanest board locations. This yields deterministic current-loop control with hardware-level fault protection.
Recommended
PMSM Field-Oriented Control
For Permanent Magnet Synchronous Motor drives, the DSPIC33FJ16MC304-I/PT provides the deterministic 40 MIPS execution needed for FOC: single-cycle 16x16 MAC operations, dual 40-bit accumulators for the PI current controllers, and fast interrupt response for PWM-update-synchronized sampling. The two independent PWM timebases support space-vector modulation with adjustable dead time, and the on-chip ADC captures phase currents synchronized to the PWM center. With 16 KB Flash and 2 KB SRAM, a full sensorless FOC stack with observer-based position estimation fits in the device for low-to-medium complexity drives. Hardware comparators back up software current limits, which is essential during high-torque transients. Designers should budget SRAM carefully, as 2 KB requires efficient fixed-point data structures rather than floating-point tables.
Recommended
Digital Power Supplies
The DSPIC33FJ16MC304-I/PT suits digitally controlled AC-DC and DC-DC converters: its high-speed PWM with independent timebases implements voltage-mode or current-mode control at switching frequencies in the hundreds of kilohertz, and the fast analog comparators provide hardware overcurrent/overvoltage protection with microsecond response that software alone cannot match. The 40 MIPS DSP core runs compensator math (3p3z, PI) deterministically each switching cycle, while 16 KB Flash holds control firmware, soft-start sequencing, and fault logging. Peripheral Pin Select simplifies routing of PWM, feedback, and telemetry signals on dense power boards. Operate from a clean 3.3 V rail derived from an auxiliary supply, and keep the analog feedback traces away from gate-drive loops to preserve ADC accuracy and comparator thresholds.
Recommended
Power Factor Correction
Continuous-mode Power Factor Correction converters benefit directly from the DSPIC33FJ16MC304-I/PT architecture. The controller samples input voltage and inductor current each switching cycle through the ADC, computes the current reference as a rectified-sine envelope scaled by the voltage-loop output, and updates the high-speed PWM duty in a deterministic interrupt at the switching frequency - a workload the 40 MIPS DSP core with single-cycle MAC handles comfortably. Fast comparators implement cycle-by-cycle current limiting that protects the MOSFET during line transients or startup, independent of firmware latency. With 16 KB Flash, PCC and average-current-mode PCC firmware plus communication diagnostics fit on-chip. Peripheral Pin Select allows PWM outputs and feedback inputs to be mapped to optimal PCB locations, minimizing loop area on the control side of the board.
Recommended
Industrial Automation and Sensing Nodes
Beyond motor drives, the DSPIC33FJ16MC304-I/PT serves as a compact industrial control and sensing node. The 40 MIPS core executes DSP filtering (IIR/FIR) on sensor streams - vibration, current, or pressure - while the MCU peripherals handle communication, sequencing, and digital I/O across 35 available pins. Peripheral Pin Select maps UART, SPI, and I2C functions flexibly, easing board-level routing in retrofit or mixed-signal designs. The industrial -40C to +85C rating matches factory-floor ambient requirements, and the 44-pin TQFP's 10 x 10 mm body fits dense control cards. With 16 KB Flash, protocol handling plus local signal-processing routines fit comfortably; use the hardware comparators as zero-crossing detectors for AC line monitoring. Design decoupling with 0.1 uF ceramics at each VDD pin and a solid ground plane to protect ADC readings from switching noise.
Recommended
Embedded Motor-Control Development and Education
The DSPIC33FJ16MC304-I/PT is a strong platform for learning and prototyping motor-control and DSP techniques. The family is supported by Microchip's MPLAB X IDE, the XC16 compiler, and motor-control application libraries covering BLDC, ACIM, and stepper algorithms, so students and engineers can move from datasheet to spinning motor quickly. The 44-pin TQFP is hand-solderable relative to BGA alternatives and breadboard-adaptable via adapter boards, and in-circuit serial programming through MCLR/PGD/PGC means no socket programmer is needed. Because drop-in siblings (16 KB/32 KB Flash, industrial/extended temperature grades) share the footprint, a single prototype PCB scales across variants without redesign. Firmware portability across the dsPIC33FJ16MC family also protects educational investment as project requirements grow in memory or peripheral complexity.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33FJ16MC304-I/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33FJ16MC304-H/PT | DSPIC33FJ16MC304-E/PT | DSPIC33FJ32MC204-I/PT | DSPIC33FJ16MC304-I/ML |
|---|---|---|---|---|---|
| Package | 44-pin TQFP (PT), 10 x 10 mm | 44-pin TQFP (PT) - same | 44-pin TQFP (PT) - same | 44-pin TQFP (PT) - same | 44-pin QFN (ML) - different body |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Program Memory | 16 KB | 16 KB | 16 KB | 32 KB | 16 KB |
| SRAM | 2 KB | 2 KB | 2 KB | 2 KB | 2 KB |
| Core Speed | 40 MHz / 40 MIPS | 40 MHz / 40 MIPS | 40 MHz / 40 MIPS | 40 MHz / 40 MIPS | 40 MHz / 40 MIPS |
| Operating Temperature | -40C to +85C (Industrial) | 0C to +70C (Commercial) | -40C to +125C (Extended) | -40C to +85C (Industrial) | -40C to +85C (Industrial) |
| PWM / Comparators | 2 PWM generators, up to 4 comparators | 2 PWM generators, up to 4 comparators | 2 PWM generators, up to 4 comparators | 2 PWM generators, up to 4 comparators | 2 PWM generators, up to 4 comparators |
| Supply Voltage | 3 V to 3.6 V | 3 V to 3.6 V | 3 V to 3.6 V | 3 V to 3.6 V | 3 V to 3.6 V |
Key Differentiators
- Motor-control-optimized peripheral set (vs DSPIC33FJ16GP304-I/ML (general-purpose sibling))
- Cost-optimal 16 KB Flash vs 32 KB upgrade (vs DSPIC33FJ32MC204-I/PT)
- Industrial temperature rating at standard price tier (vs DSPIC33FJ16MC304-H/PT)
- Trade-off: limited SRAM (vs DSPIC33FJ128MC804-I/PT)
Design Notes
The DSPIC33FJ16MC304-I/PT operates from a 3.0 V to 3.6 V supply per the family datasheet (70283K). Place a 0.1 uF ceramic decoupling capacitor at every VDD pin pair, plus one bulk 4.7 uF to 10 uF capacitor near the device. Do not power the controller from the same rail as motor gate drivers without an LC or LDO filter stage - PWM switching transients couple into the supply and can cause ADC errors or spurious comparator trips. Follow the minimal pin-connection checklist in the 'Getting Started' section of datasheet 70283K before first power-up.
The 44-pin TQFP (PT) has 0.8 mm lead pitch with gull-wing leads; use the IPC-recommended land pattern with a 1:1 pad match and slight toe extension for inspectable solder joints. Keep the high-speed PWM traces short and routed away from ADC/analog feedback lines. Peripheral Pin Select lets you remap functions, so route first and configure PPS second. Provide thermal relief through a solid ground plane - the TQFP has no exposed pad, so heat exits primarily through the leads.
MCLR must be pulled up to VDD (typically 10 kohm) with the datasheet-recommended capacitor network, or in-circuit programming and debug will fail intermittently. Do not leave PGD/PGC unbuffered on long cables. When substituting the -H/PT (0C to +70C) or -E/PT (-40C to +125C) grades, verify the ambient inside the enclosure - a part near a power stage frequently exceeds 85C, which is why the -E grade exists. Also note the 2 KB SRAM limit: fixed-point, statically allocated buffers are mandatory for control loops.
Estimated: at 40 MIPS with moderate I/O loading, the dsPIC33FJ16MC304-I/PT typically dissipates well under 0.5 W, so with a TQFP theta_JA in the 50-70 C/W range (estimate; consult datasheet 70283K for the exact value) the junction rise above ambient is under 35 C - no heatsink is needed. However, in sealed enclosures above 60 C ambient, the -I/PT grade margin shrinks; derate by selecting the -E/PT extended-grade variant rather than adding airflow.
Compliance Information
RoHS compliant and lead-free per Master Electronics listing (plastic 44-pin TQFP, gull-wing, lead-free). REACH, halogen-free, and conflict-minerals statuses not stated in the reviewed sources; consult Microchip environmental documentation.
