DSPIC33FJ32GP304-E/ML - 16-bit DSC 40MIPS 32KB Flash | Microchip
MPN: DSPIC33FJ32GP304-E/ML ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $5.35 | $5.35 |
| 10 | $4.82 | $48.20 |
| 100 | $4.28 | $428.00 |
| 500 | $3.91 | $1,955.00 |
| 1,000 | $3.55 | $3,550.00 |
DSPIC33FJ32GP304-E/ML Overview
A digital signal controller combines the compute throughput of a DSP with the peripheral integration and ease of use of a microcontroller, sitting within the broader hierarchy: DSC -> 16-bit microcontroller -> embedded processor -> semiconductor. The dsPIC33F family is Microchip's mainstream 16-bit DSC platform, executing an enhanced RISC instruction set with DSP engine, hardware multiply-accumulate, and optional DMA.
Key features of this device include 40 MIPS core speed at 3.0V to 3.6V supply, 32KB self-programming Flash with ECC-class write endurance, 4KB SRAM, 35 general-purpose I/O, high-speed PWM outputs, up to four high-speed analog comparators, a multi-channel 10/12-bit ADC, and DMA controllers that offload data movement from the CPU.
Architecturally, the dsPIC33F core pairs a 16-bit pipeline with a dedicated DSP engine (17-bit x 17-bit multiplier, 40-bit accumulator, barrel shifter), enabling single-cycle MAC operations for filtering, FFT, and control-loop math. Peripheral Trigger Generator and DMA support deterministic real-time behavior needed for closed-loop power conversion and motor control.
Typical applications include digital power supplies, sensor signal acquisition, motor control, and general-purpose embedded control where 8-bit MCUs run out of headroom but 32-bit devices are overkill.
For design, decouple all VDD/VDDCORE pins with 0.1uF ceramics, connect VCAP to a low-ESR capacitor per Microchip's connection requirements (document 70292), and budget Flash carefully - 32KB is ample for control firmware but tight for protocol stacks.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for DSPIC33FJ32GP304-E/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 DSPIC33FJ32GP304-E/ML (same form factor and footprint) — differing in Operating Temperature, Package, I/O Ports, ADC, Flash Program Memory.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33FJ32GP304-I/ML
✅ Drop-In✓ In Stock
$3.49 / Unit
View Datasheet →DSPIC33FJ32MC304-E/ML
✅ Drop-In✓ In Stock
$3.95 / Unit
View Datasheet →DSPIC33FJ16GP304-I/ML
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$2.95 / Unit
View Datasheet →DSPIC33FJ32GP304T-E/ML
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33FJ32GP304-E/ML Maximum Ratings & Electrical Characteristics
| Core | dsPIC33F 16-bit DSC |
| Maximum CPU Speed | 40 MIPS |
| Program Memory Size | 32KB (32K x 8) Flash |
| SRAM Size | 4KB (4096 words RAM) |
| Supply Voltage Range | 3 V to 3.6 V |
| I/O Ports | 35 I/O |
| Package | 44-QFN (8x8 mm) |
| Operating Temperature Range | -40C to +125C (E, extended) |
| Mounting Type | Surface Mount |
| Program Memory Type | Flash (ROM Type: Flash) |
| DMA Channels | Yes (DMA controller) |
| Comparators | Up to 4 high-speed comparators |
| Peripherals | High-Speed PWM, ADC, comparators |
| Technology | CMOS |
| RoHS Status | Lead-free, RoHS compliant |
| Lifecycle Status | Active |
DSPIC33FJ32GP304-E/ML 44-qfn (8x8 mm) Pin Configuration Guide
Pin configuration for DSPIC33FJ32GP304-E/ML (44-qfn (8x8 mm) 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 DSPIC33FJ32GP304-E/ML.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33FJ32GP304-E/ML is suitable for 6 applications: Digital Power Supplies, Motor Control, Sensor Signal Acquisition, Industrial Automation and Control, Automotive and Transportation Subsystems, Portable and Embedded Instrumentation.
Digital Power Supplies
The DSPIC33FJ32GP304-E/ML fits switch-mode power conversion because its 40 MIPS core, high-speed PWM, and DMA enable deterministic cycle-by-cycle current-mode control. The ADC samples inductor current each switching period, and the Peripheral Trigger Generator synchronizes conversion to the PWM timebase, minimizing control-loop latency. With up to four high-speed comparators offering direct connection to PWM fault logic, hardware overcurrent protection reacts without CPU intervention. Placed as the sole controller for a buck, boost, or LLC stage, it executes PID or 2P2Z compensators in firmware; the -E extended temperature rating (-40C to +125C) suits power supplies inside sealed industrial enclosures where ambient near the controller can exceed 85C.
Recommended
Motor Control
For DC and BLDC motor drives, the DSPIC33FJ32GP304-E/ML provides high-speed PWM outputs and four high-speed comparators that form a complete sensored trapezoidal drive at 40 MIPS. The DSP engine executes the control loop, while comparators with direct PWM connection implement cycle-by-cycle current limiting in hardware. DMA moves ADC current-sense samples to RAM without stealing CPU cycles, keeping commutation timing tight even with communication tasks running. The extended -40C to +125C rating is valuable for fan, pump, and actuator motors in automotive bays or industrial cabinets. For field-oriented control (FOC) of PMSM motors, evaluate the pin-compatible DSPIC33FJ32MC304-E/ML, whose motor-control PWM adds complementary outputs and dead-time insertion required by three-phase bridge topologies.
Recommended
Sensor Signal Acquisition
As a general-purpose (GP) DSC, this part excels at acquiring and conditioning analog sensor data. The integrated multi-channel ADC digitizes sensor outputs across 35 I/O-mapped channels, and the 17x17 MAC DSP engine runs FIR/IIR filters and FFTs in real time for noise reduction, feature extraction, or vibration analysis. DMA streams conversion results to SRAM buffers so the CPU can process one block while the next fills - at 40 MIPS there is ample headroom for sampling plus math plus a communication stack. The extended temperature range supports sensor nodes mounted on engines, industrial machinery, or outdoor equipment. Typical companions include precision voltage references and RS-485/CAN transceivers to bus the digitized data to a host controller.
Recommended
Industrial Automation and Control
In factory automation, the DSPIC33FJ32GP304-E/ML serves as a compact real-time controller for valves, actuators, HVAC dampers, and process I/O. Its 40 MIPS core services fast PID loops while 32KB Flash holds protocol handling (UART, SPI, I2C) and state machines; 35 I/O lines directly drive relays, opto-isolated inputs, and indicators. The extended -40C to +125C temperature rating matches control panels mounted near motors, drives, or outdoors where cabinet temperatures exceed consumer-grade limits. Hardware comparators provide fault protection for actuator current limits, and DMA keeps serial communication deterministic during control interrupts. For networked nodes, pair with CAN or RS-485 transceivers; Microchip's Explorer 16/32 board with a dsPIC PIM accelerates prototyping before committing to custom PCB layout.
Recommended
Automotive and Transportation Subsystems
The -E extended temperature grade (-40C to +125C) makes this DSC appropriate for automotive auxiliary electronics such as lighting control, HVAC flap actuators, pump control, and sensor interfaces - applications exposed to under-hood or near-engine temperatures. The high-speed PWM with comparator-based fault protection handles solenoid and lamp drive safely, while the DSP engine supports sensor signal processing. Note that the -E/ML commercial part itself is not AEC-Q100 qualified; for production automotive programs requiring full qualification, verify availability of the Q1-graded equivalent or qualify the -E part per your internal process. The 3.0V to 3.6V supply pairs with standard automotive 5V LDO regulators and level-shifting for 12V-domain signaling.
Recommended
Portable and Embedded Instrumentation
Handheld instruments - environmental meters, battery testers, custom measurement tools - benefit from the DSPIC33FJ32GP304-E/ML's balance of compute and integration. The 44-QFN 8x8 mm package keeps board area small, the integrated ADC removes an external converter, and the 40 MIPS DSP engine performs calibration math, RMS computation, and display formatting simultaneously. DMA-driven serial ports stream results to Bluetooth or USB bridge ICs without loading the control loop. 32KB Flash accommodates instrument firmware plus a basic menu/UI layer, though complex protocol stacks may need the 64KB/128KB GPX family siblings on the same footprint philosophy. Battery-powered designs should apply the dsPIC33F power management features (doze/sleep modes) to cut average current between measurement bursts.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33FJ32GP304-E/ML — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33FJ32GP304-I/ML | DSPIC33FJ32MC304-E/ML | DSPIC33FJ16GP304-I/ML |
|---|---|---|---|---|
| Package | 44-QFN (8x8 mm) | 44-QFN (8x8 mm) - same | 44-QFN (8x8 mm) - same | 44-QFN (8x8 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory (Flash) | 32KB (32K x 8) | 32KB (32K x 8) | 32KB (32K x 8) | 16KB |
| CPU Speed | 40 MIPS | 40 MIPS | 40 MIPS | 40 MIPS |
| Operating Temperature | -40C to +125C (E, extended) | -40C to +85C (I, industrial) | -40C to +125C (E, extended) | -40C to +85C (I, industrial) |
| Peripheral Emphasis | General Purpose (GP): high-speed PWM, ADC, comparators | General Purpose - same peripheral set | Motor Control (MC): dedicated motor PWM, dead-time | General Purpose - same peripheral set |
| 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 |
| Lifecycle Status | Active | Active | Active | Active |
Key Differentiators
- Extended temperature range for harsh environments (vs DSPIC33FJ32GP304-I/ML)
- General-purpose peripheral set with DSP engine (vs DSPIC33FJ32MC304-E/ML)
- 32KB Flash for real applications (vs DSPIC33FJ16GP304-I/ML)
- Honest trade-off: 32KB Flash ceiling (vs dsPIC33FJ64GPX/X04 family)
Design Notes
Per the dsPIC33FJ32GP302/304 family datasheet (Microchip document 70292, 'Basic Connection Requirements' section), all VDD pins need 0.1uF low-ESR ceramic decoupling placed within 2 mm of each pin, and the VDDCORE/VCAP pin requires the specified low-ESR capacitor to stabilize the internal 2.5V core regulator - omitting or undersizing this capacitor causes brown-out resets and unreliable Flash writes. Connect AVDD/AVSS to a clean analog supply (ferrite bead from VDD) for full ADC accuracy. Power the device from a 3.3V LDO or buck with at least 100 mA headroom for I/O loads.
The 44-QFN (8x8 mm) package has an exposed pad on the underside that must be soldered to a grounded copper pour - it is both the primary ground return and the thermal path. Design the land pattern per IPC QFN guidelines with via stitching (4x4 via array, 0.3 mm vias) connecting the pad to internal ground planes. Pin 1 is marked by a dot; orient per the datasheet pinout diagram in document 70292E. For hand rework, the QFN requires hot air or a profiled reflow - avoid direct iron contact on the pad side.
Three frequent mistakes with this family: (1) exceeding the 3.6V absolute maximum supply by feeding 5V logic directly into I/O - use level shifting; (2) misusing Peripheral Pin Select (PPS) - remappable peripherals must be locked (unlock sequence) before use, and mismapped PPS assignments silently break UART/SPI; (3) treating the 32KB Flash limit casually - with ECC overhead and bootloader reserved regions, usable application space is smaller than expected, so budget memory before committing to this 32KB variant instead of the 64KB/128KB GPX parts on the same family architecture.
Estimated: at the maximum ambient of +125C, junction margin is thin - the dsPIC33FJ family junction maximum is 125C to 150C depending on grade, so at TAMB near 125C the device should run at reduced activity. With a typical active current on the order of tens of mA at 3.3V (single-digit mW to ~100 mW), a ground-plane-coupled exposed pad keeps junction rise to a few degrees C; verify against the datasheet thermal resistance table for your exact copper area before finalizing the -E part for 125C ambient applications.
Compliance Information
Lead-free plastic package per verified package data; RoHS compliant per FindIC and Microchip product listings. -E grade denotes extended temperature, not automotive AEC-Q100 qualification. REACH and halogen-free status not stated in provided data.