DSPIC33FJ32GP304T-I/ML - 16-bit 40 MIPS DSC, 32KB Flash | Microchip
MPN: DSPIC33FJ32GP304T-I/ML ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.2 | $6.20 |
| 10 | $5.58 | $55.80 |
| 100 | $4.96 | $496.00 |
| 500 | $4.4 | $2,200.00 |
| 1,000 | $3.9 | $3,900.00 |
DSPIC33FJ32GP304T-I/ML Overview
A Digital Signal Controller (DSC) combines the compute architecture of a microcontroller with the mathematical throughput of a digital signal processor. In the embedded-systems hierarchy, the dsPIC33F family sits between general-purpose MCUs (such as PIC18) and full DSPs, offering single-cycle MAC instructions, hardware divide, and DSP engine while retaining MCU-style peripherals, DMA, and interrupt latency behavior.
Key features include a 16-bit modified Harvard RISC core running at 40 MIPS, 32KB self-programmable Flash with ECC-free erase/write support, DMA controllers for peripheral data transfer without CPU intervention, and an integrated analog portfolio - high-speed ADC, comparators, and CTMU-class peripherals typical of the GP (General Purpose) series.
The device operates from a 3V to 3.6V single supply, targets the industrial temperature range (-40C to +85C, indicated by the -I suffix), and supports In-Circuit Serial Programming (ICSP) via the standard Microchip programming interface. Development is supported by MPLAB X IDE, the XC16 compiler, and the Explorer 16/32 Development Board, which accepts dsPIC PIM modules for rapid prototyping.
Typical applications include motor control and digital power conversion, sensor signal processing and conditioning, industrial automation nodes, and portable instrumentation where DSP math meets real-time control loops.
Design consideration: as with all dsPIC33F devices, pay attention to the two-stage Flash program counter prefetch and the need for decoupling on both AVDD and VDD rails; analog performance depends on a clean, separate AVDD supply domain.
This page synthesizes distributor pricing data, pin-compatible alternatives, and practical design guidance not found in the manufacturer datasheet, providing a complete engineering decision resource in one place.
Drop-in alternatives for DSPIC33FJ32GP304T-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 DSPIC33FJ32GP304T-I/ML (same form factor and footprint) — differing in Package, Operating Temperature, RoHS Status, ADC, Core.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33FJ32GP304-I/ML
✅ Drop-In✓ In Stock
$3.49 / Unit
View Datasheet →DSPIC33FJ32GP304T-E/ML
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33FJ16GP304-I/ML
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$2.95 / Unit
View Datasheet →DSPIC33EP32MC204-I/ML
✅ Drop-In✓ In Stock
$2.05 / Unit
View Datasheet →DSPIC33FJ64GP804-I/ML
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33FJ32GP304T-I/ML Maximum Ratings & Electrical Characteristics
| Core Architecture | 16-bit dsPIC33F RISC (modified Harvard) |
| Performance | 40 MIPS |
| Clock Speed | 40 MHz |
| Program Memory | 32KB (32K x 8) Flash |
| DMA Channels | Yes (DMA) |
| Supply Voltage | 3 V to 3.6 V |
| I/O Ports | 35 |
| Package | 44-QFN (8x8 mm) with Exposed Pad |
| Mounting Type | Surface Mount |
| Operating Temperature | -40C to +85C (I grade) |
| Series | dsPIC33F GP (General Purpose) |
| Packaging | Tape & Reel (TR) |
| Programming | ICSP (In-Circuit Serial Programming) |
| RoHS Status | ROHS3 Compliant |
| Product Status | Active |
| Manufacturer Lead Time | 6 weeks |
DSPIC33FJ32GP304T-I/ML 44-qfn (8x8 mm) with exposed pad Pin Configuration Guide
Pin configuration for DSPIC33FJ32GP304T-I/ML (44-qfn (8x8 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 DSPIC33FJ32GP304T-I/ML.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33FJ32GP304T-I/ML is suitable for 6 applications: Motor Control and Digital Power, Industrial Automation Nodes, Sensor Signal Processing, Portable Instrumentation, Embedded Control with DMA-Intensive Data Paths, Automotive-Adjacent and Rugged Industrial Systems.
Motor Control and Digital Power
The DSPIC33FJ32GP304T-I/ML fits motor control and digital power conversion through its 40 MIPS 16-bit DSP core, high-speed PWM outputs, and fast ADC sampling. Running field-oriented control (FOC) on small BLDC or PMSM motors is practical at this compute level, with single-cycle MAC operations accelerating the control-loop mathematics. The 44-QFN 8x8 mm footprint keeps the controller close to the gate-drive stage in compact power electronics. Performance consideration: at 40 MIPS, PWM carrier frequencies above 20 kHz leave adequate CPU headroom for current-loop execution at 10-20 kHz rates, but complex sensorless observers may push Flash utilization toward the 32KB limit - verify code sizing early or plan the pin-compatible 64KB family upgrade.
Recommended
Industrial Automation Nodes
In industrial automation, the DSPIC33FJ32GP304T-I/ML serves as a sensor-interface and local-control node combining UART, SPI, and I2C communication with 35 multiplexed I/O for actuator and relay control. The industrial -40C to +85C temperature rating and 3V-3.6V supply suit factory-floor environments, while DMA offloads serial data handling to keep the CPU available for protocol stacks. The 44-QFN package supports dense I/O expansion boards. Performance consideration: the 32KB Flash accommodates Modbus RTU or similar lightweight protocol implementations with room for application logic, but full industrial Ethernet stacks require larger Flash variants in the same footprint family, enabling a drop-in BOM change if connectivity needs expand.
Recommended
Sensor Signal Processing
The DSPIC33FJ32GP304T-I/ML is well suited to sensor signal conditioning and processing because its DSP engine performs FIR/IIR filtering with single-cycle MAC throughput while integrated high-speed ADCs digitize sensor outputs directly. Applications include load-cell amplification, vibration monitoring, and ultrasonic processing, where the 40 MIPS core executes real-time filters that a general-purpose MCU at similar cost cannot. DMA transfers ADC results to RAM without CPU intervention, sustaining continuous sampling pipelines. Performance consideration: use the separate AVDD supply domain with clean analog decoupling to achieve full ADC accuracy; analog and digital grounds must be partitioned carefully on the 44-QFN layout to prevent digital switching noise from corrupting low-level sensor measurements.
Recommended
Portable Instrumentation
Battery-powered portable instruments benefit from the DSPIC33FJ32GP304T-I/ML's single 3V-3.6V supply, compact 8x8 mm QFN package, and DSP capability for on-device measurement math such as RMS computation, FFT analysis, and calibration correction. The 35 I/O lines drive displays, keypads, and communication interfaces within one compact controller. The device's low-power management features support sleep and idle modes to extend battery life in hand-held analyzers and field-test equipment. Performance consideration: the 40 MHz clock generation from an internal oscillator or crystal affects measurement accuracy - instruments requiring precise timing should budget an external crystal, and designers should profile active versus sleep current profiles against their battery capacity targets during the design phase.
Recommended
Embedded Control with DMA-Intensive Data Paths
Systems moving continuous data streams - such as audio processing, serial protocol gateways, and acquisition front-ends - exploit the DMA controller in the DSPIC33FJ32GP304T-I/ML, which transfers ADC, UART, and SPI data directly to RAM without CPU cycles. At 40 MIPS, the core can sustain meaningful DSP workloads while DMA keeps peripheral data flowing, avoiding the FIFO-overflow pitfalls common in interrupt-driven designs. The 32KB Flash holds both the application and data buffers adequately for moderate streaming rates. Performance consideration: allocate DMA buffer memory carefully in the 16-bit DSP RAM space respecting the DMA addressing limits, and verify that peripheral selection conflicts are resolved when multiple channels contend for shared RAM buses at maximum throughput.
Recommended
Automotive-Adjacent and Rugged Industrial Systems
For rugged industrial equipment exposed to harsh environments - pumps, compressors, outdoor controllers - the E-grade sibling DSPIC33FJ32GP304T-E/ML extends the operating range to -40C to +125C on the identical die, package, and pinout, giving designers a drop-in thermal upgrade when enclosures run hot. The standard -I grade part covers the typical industrial envelope, and ROHS3 compliance plus Tape & Reel packaging support automated, high-reliability assembly lines. Performance consideration: when deploying near the upper temperature limits, derate Flash endurance and verify supply-rail stability across the full range; Microchip's family electrical specifications table provides the guard-band parameters needed to confirm margins at 125C operation before finalizing the thermal design.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33FJ32GP304T-I/ML — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33FJ32GP304-I/ML | DSPIC33FJ32GP304T-E/ML | DSPIC33EP32MC204-I/ML | DSPIC33FJ16GP304-I/ML |
|---|---|---|---|---|---|
| Package | 44-QFN (8x8 mm), Exposed Pad | 44-QFN (8x8 mm) - same | 44-QFN (8x8 mm) - same | 44-QFN - same footprint | 44-QFN (8x8 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 32KB (32K x 8) | 32KB | 32KB | 32KB | 16KB |
| Operating Temperature | -40C to +85C (I grade) | -40C to +85C | -40C to +125C (E grade) | -40C to +85C | -40C to +85C |
| Core Family / Architecture | dsPIC33F GP | dsPIC33F GP | dsPIC33F GP | dsPIC33EP MC (newer, motor control) | dsPIC33F GP |
Key Differentiators
- Cost-optimized 32KB entry point of GP family (vs DSPIC33FJ64GP804-I/ML)
- Extended-temperature drop-in option (vs DSPIC33FJ32GP304T-E/ML)
- Tape & Reel automation-ready delivery (vs DSPIC33FJ32GP304-I/ML)
Design Notes
The DSPIC33FJ32GP304T-I/ML requires a 3V to 3.6V supply on VDD with a clean, separate AVDD rail for the analog peripherals (ADC, comparators). Decouple each VDD pin with 0.1uF ceramic capacitors placed within 2 mm of the pins, plus bulk 4.7-10uF per supply domain. Connect the exposed thermal pad to a solid ground plane - this is not only thermal relief but also the primary ground return. Ferrite beads between VDD and AVDD, combined with local AVDD decoupling, are standard practice per Microchip's analog performance guidance for dsPIC33F devices.
The 44-QFN 8x8 mm package places multiple ground and power pins requiring a well-partitioned 4-layer stackup for mixed-signal designs: dedicate one internal layer to ground with a split under the analog section. Route the OSC and programming (PGD/PGC/MCLR) traces away from high-dv/dt PWM outputs. Provide ICSP header access even in production boards for field firmware updates - the 5-pin ICSP interface (MCLR, VDD, GND, PGD, PGC) occupies minimal board area. Keep crystal load capacitors close to OSC pins and verify 32.768 kHz secondary oscillator routing if a real-time clock is planned.
Three frequent mistakes with the dsPIC33FJ32GP304: (1) ignoring the Flash code-size ceiling - 32KB fills faster than expected once DSP libraries and protocol stacks are added; plan the pin-compatible 64KB/128KB family upgrade path in the layout. (2) Applying 5V logic to I/O pins - this is a 3.3V device; 5V-tolerant inputs are not guaranteed and level shifting is needed for 5V buses. (3) Misconfiguring the oscillator PLL at startup - an incorrect PLL prescaler can run the core out of specification; follow the Microchip family datasheet clock configuration tables and use MPLAB X configuration bit setup to validate register values before first power-up.
Compliance Information
ROHS3 Compliant per Microchip USA product data and DigiKey listings. Not AEC-Q100 qualified - this is an industrial-grade (I) part. REACH, halogen-free, and conflict-minerals status not stated in provided data.