DSPIC33FJ32GP302-I/SP - 16-bit 40 MIPS DSC 32KB Flash | Microchip
MPN: DSPIC33FJ32GP302-I/SP ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.9 | $4.90 |
| 10 | $4.53 | $45.30 |
| 100 | $4.2 | $420.00 |
| 500 | $3.95 | $1,975.00 |
| 1,000 | $3.7 | $3,700.00 |
DSPIC33FJ32GP302-I/SP Overview
A digital signal controller combines the compute structure of a microcontroller with DSP-grade arithmetic hardware. The dsPIC33F family sits within the broader hierarchy of microcontrollers (MCU -> digital signal controller -> digital signal processor), using a 16-bit modified Harvard architecture with an enhanced instruction set that includes significant DSP support, making it suitable for control loops that need fast, repetitive computation.
Key features include the 16-bit dsPIC33 CPU with DSP engine, up to 40 MIPS instruction throughput, Flash program memory of 32 KB, and an on-chip DMA controller. Per the family datasheet, these devices integrate high-speed PWM, a 10-bit ADC, and up to four high-speed comparators with direct connection to the PWM for fast fault response.
Technically, the device operates at 3.0 V to 3.6 V with industrial temperature range (-40C to +85C for the -I suffix), and supports In-Circuit Serial Programming (ICSP) and in-circuit debugging via PGECx/PGEDx pin pairs, compatible with Microchip MPLAB tools, SNAP, ICD and the Explorer 16/32 development board with PIM modules.
Typical applications include digital power supplies, motor control, sensor signal processing, and general embedded control where DSP math accelerates filtering and control algorithms.
When designing, note that all VSS and VDD pins must be connected, and ICSP requires using PGECx/PGEDx pins strictly as matched pairs.
This page synthesizes distributor pricing, drop-in alternatives, pinout data, and practical design notes not consolidated in the manufacturer datasheet.
Drop-in alternatives for DSPIC33FJ32GP302-I/SP — 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 DSPIC33FJ32GP302-I/SP (same form factor and footprint) — differing in Operating Temperature, Package, Core Architecture, Mounting Type, Timers.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33FJ32GP302-H/SP
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33FJ64GPX02-I/SP
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33FJ128GPX02-I/SP
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33FJ32MC302-I/SP
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$3.92 / Unit
View Datasheet →DSPIC33FJ32GP302-E/SP
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$4.12 / Unit
View Datasheet →PIC24HJ32GP302-I/SP
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33FJ32GP302-I/SP Maximum Ratings & Electrical Characteristics
| Core Architecture | 16-bit dsPIC33F modified Harvard |
| Max CPU Speed | 40 MIPS (40 MHz clock) |
| Program Memory | 32 KB Flash |
| SRAM | 2 KB |
| Supply Voltage | 3.0 V to 3.6 V |
| Operating Temperature | -40C to +85C (industrial, -I suffix) |
| Package | 28-pin SPDIP |
| Mounting Type | Through Hole |
| DMA Channels | 8 |
| Timers | 7 |
| External Interrupts | 3 |
| Serial I/O Ports | 3 |
| On-chip Peripherals | High-Speed PWM, 10-bit ADC, comparators |
| Programming / Debug | ICSP, in-circuit debug (PGECx/PGEDx pairs) |
| RoHS Status | Lead-free, RoHS compliant (per FindIC listing) |
| Packaging | Tube |
DSPIC33FJ32GP302-I/SP Pin Configuration
| Pin 1 | MCLR — Master clear reset input / programming voltage |
| Pin 2 | AN0/VREF+/CN2/RB0 — Analog input 0 / positive voltage reference / change notification / port B |
| Pin 3 | AN1/VREF-/CN3/RB1 — Analog input 1 / negative voltage reference / change notification / port B |
| Pin 4 | AN2/SS1/CN4/RB2 — Analog input 2 / SPI slave select / change notification / port B |
| Pin 5 | AN3/INDX/CN5/RB3 — Analog input 3 / QEI index / change notification / port B |
| Pin 6 | AN4/QEA/IC7/CN6/RB4 — Analog input 4 / QEI phase A / input capture 7 / port B |
| Pin 7 | VDD — Power supply (3.0 V to 3.6 V) |
| Pin 8 | VSS — Ground reference |
| Pin 9 | OSC1/CLKI/CN7/RA2 — Oscillator crystal input / external clock input |
| Pin 10 | OSC2/CLKO/RCLO/CN8/RA3 — Oscillator crystal output / clock output |
| Pin 11 | VDD — Power supply (3.0 V to 3.6 V) |
| Pin 12 | VSS — Ground reference |
| Pin 13 | SOSCI/CN9/RA4 — Secondary oscillator crystal input / change notification |
| Pin 14 | SOSCO/T1CK/CN0/PA4 — Secondary oscillator crystal output / Timer1 external clock |
| Pin 15 | CN1/RB5/PGD3 — Port B / change notification / programming data (alternate pair) |
| Pin 16 | VDD — Power supply (3.0 V to 3.6 V) |
| Pin 17 | PGEC3/AN9/RB9 — Programming clock (alternate pair) / analog input / port B |
| Pin 18 | AN8/RB8 — Analog input 8 / port B |
| Pin 19 | TMS/AN10/RB10 — JTAG test mode select / analog input / port B |
| Pin 20 | TDI/AN11/RB11 — JTAG test data input / analog input / port B |
| Pin 21 | TCK/AN12/RB12 — JTAG test clock / analog input / port B |
| Pin 22 | TDO/AN13/RB13 — JTAG test data output / analog input / port B |
| Pin 23 | AN14/RB14 — Analog input 14 / port B |
| Pin 24 | AN15/RB15/PGD1 — Analog input 15 / port B / programming data (primary pair) |
| Pin 25 | VSS/AVSS — Ground / analog ground reference |
| Pin 26 | VDD/AVDD — Power supply / analog power reference |
| Pin 27 | RP10/RF4/U1TX/SDO1 — Remappable pin / UART1 transmit / SPI1 data out |
| Pin 28 | RP11/RF5/U1RX/SDI1/PGEC1 — Remappable pin / UART1 receive / SPI1 data in / programming clock (primary pair) |
Typical Applications
DSPIC33FJ32GP302-I/SP is suitable for 6 applications: Digital Power Supplies, Motor Control, Sensor Signal Processing, Industrial Automation Nodes, Audio and Speech Processing, Embedded Prototyping and Education.
Digital Power Supplies
The DSPIC33FJ32GP302-I/SP fits digital power conversion because its 40 MIPS dsPIC33 core executes control-loop mathematics fast enough for switching regulators running at tens to hundreds of kilohertz. The integrated high-speed PWM can shape switching waveforms while the 10-bit ADC samples voltage and current feedback, and up to four high-speed comparators with direct PWM connection provide hardware-level overcurrent response without CPU latency. Used as the sole controller between the rectified input and the power stage, it replaces analog compensation networks with firmware, enabling programmable soft-start, telemetry, and adaptive control. The trade-off versus a dedicated analog controller is firmware development effort, but the 32 KB Flash is sufficient for most isolated and non-isolated topologies.
Recommended
Motor Control
For BLDC, PMSM, and stepper motor control, the DSPIC33FJ32GP302-I/SP provides the 40 MIPS throughput needed to run field-oriented control or sensorless trapezoidal algorithms at practical loop rates. The high-speed PWM generates drive waveforms, the 10-bit ADC reads phase currents and bus voltage under DMA transfer, and the four high-speed comparators can trip the PWM directly on fault conditions, protecting the power stage in microseconds. Designs needing complementary PWM outputs with dead-time hardware should instead use the pin-compatible DSPIC33FJ32MC302-I/SP motor-control variant on the same 28-pin footprint. Position or hall sensor inputs map to the Capture inputs, keeping the external component count low in 28-pin systems.
Recommended
Sensor Signal Processing
The DSP instruction set of the dsPIC33FJ32GP302-I/SP makes it a strong fit for embedded sensor conditioning: 40 MIPS supports real-time FIR/IIR filtering, RMS computation, and FFT-based analysis on data streamed from the 10-bit ADC through the 8-channel DMA. Typical roles include vibration monitoring, load-cell conditioning, and audio-band analysis in industrial nodes. Running at 3.0 V to 3.6 V, it pairs directly with 3.3 V analog front ends without level shifting. Compared with a generic 16-bit MCU, the multiply-accumulate hardware reduces filtering cycles significantly; compared with a standalone DSP, it keeps the whole application - communication, control, and math - in one 28-pin, through-hole friendly package that is easy to prototype on breadboards.
Recommended
Industrial Automation Nodes
In factory automation, the DSPIC33FJ32GP302-I/SP acts as a compact node controller combining -40C to +85C industrial temperature operation, seven timers, three external interrupt sources, and three serial ports (UART/SPI/I2C class peripherals) for PLC I/O, actuator control, and sensor aggregation. The 28-pin SPDIP through-hole package simplifies servicing and prototyping on carrier boards in retrofit equipment. DMA offloads serial transfers so the 40 MIPS core can run control logic concurrently. For designs requiring more Flash for protocol stacks or logging, the pin-compatible DSPIC33FJ128GPX02-I/SP upgrades within the same footprint. Firmware is developed in MPLAB X with ICSP programming, allowing field updates through the PGECx/PGEDx pins without removing the device.
Recommended
Audio and Speech Processing
Speech recognition front ends, audio effects, and acoustic alerting benefit from the DSP engine of the DSPIC33FJ32GP302-I/SP: 40 MIPS sustains 16-bit fixed-point filtering and codebook operations at audio sample rates, while the 10-bit ADC captures microphone or line-level signals through DMA buffers. The 32 KB Flash holds codec-style algorithms and feature extraction for command-word detection in cost-sensitive consumer and appliance products. Output stages use the PWM peripheral for Class-D style modulation in alerts and tones. The 3.0 V to 3.6 V rail simplifies battery and USB-powered designs. For products requiring 12-bit audio capture, add an external SPI ADC such as the MCP3202 while keeping the same controller footprint.
Recommended
Embedded Prototyping and Education
The through-hole 28-pin SPDIP package of the DSPIC33FJ32GP302-I/SP makes it exceptionally convenient for prototyping, university labs, and low-volume products - it mounts in a standard 0.3-inch DIP socket, works on breadboards, and survives repeated rework. Microchip supports it with the Explorer 16/32 Development Board using PIM modules, MPLAB X IDE, and low-cost programmers such as MPLAB SNAP, covering ICSP programming and in-circuit debugging. Learners get exposure to a genuine 16-bit DSP-enhanced architecture at 40 MIPS with DMA, PWM, ADC, and comparators. As projects mature into production, the same firmware can migrate to SMD siblings (SOIC or QFN packages in the same family) with minimal code changes.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33FJ32GP302-I/SP — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33FJ32GP302-H/SP | DSPIC33FJ64GPX02-I/SP | DSPIC33FJ32MC302-I/SP | PIC24HJ32GP302-I/SP |
|---|---|---|---|---|---|
| Package | 28-pin SPDIP | 28-pin SPDIP - same | 28-pin SPDIP - same | 28-pin SPDIP - same | 28-pin SPDIP - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| CPU Performance | 40 MIPS (16-bit dsPIC33F, DSP-enhanced) | 40 MHz / 40 MIPS | 40 MIPS | 40 MIPS | 40 MIPS (no DSP instructions) |
| Program Flash | 32 KB | 32 KB | 64 KB | 32 KB | 32 KB |
| 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 |
| Special Peripherals | High-speed PWM, 10-bit ADC, comparators, 8-ch DMA | Same peripheral set | GPX2 enhanced peripheral set | Motor-control PWM module | MCU peripheral set, no DSP engine |
Key Differentiators
- DSP-enhanced core at lowest cost point (vs PIC24HJ32GP302-I/SP)
- More Flash in the identical footprint (vs DSPIC33FJ32GP302-I/SP vs DSPIC33FJ64GPX02-I/SP)
- Purpose-built motor control sibling available (vs DSPIC33FJ32MC302-I/SP)
Design Notes
Connect ALL VDD and VSS pins in the 28-pin package to the 3.0 V to 3.6 V rail and ground; per Microchip device support documentation this is mandatory for programming, debugging, and reliable Flash operation. Decouple each VDD pin with a 0.1 uF ceramic capacitor placed within a few millimeters of the pin, plus one bulk 4.7 uF to 10 uF capacitor per board. Because this device lacks a wide-voltage range, a 5 V system needs a local 3.3 V regulator; budget for ADC reference stability by using a clean rail or the VREF+ pin.
For ICSP, use the PGECx/PGEDx pins strictly as matched pairs - if PGEC2 carries ICSPCLK, ICSPDAT must be on PGED2. Provide a 5-pin (MCLR, VDD, GND, PGD, PGC) header on every production board so the device can be flashed in-circuit without removal from the SPDIP socket. Keep the oscillator traces (OSC1/OSC2 and SOSCI/SOSCO) short with guard ground; the primary crystal and secondary 32.768 kHz crystals should have their load capacitors returned to a quiet ground.
The 28-pin SPDIP through-hole package trades layout convenience for signal integrity: long through-hole traces and socket contact resistance matter at 40 MHz operation. Avoid sockets with high contact resistance on VDD/VSS pins in noisy motor-control or power-conversion environments. Also note the analog pins (ANx) default to analog mode after reset - firmware must clear the AD1PCFG/ANSEL-type configuration registers to use RB0-RB15 as digital I/O, a frequent first-program pitfall. Verify the exact pin functions against Microchip datasheet DS70292 before routing critical remappable RPn pins.
Compliance Information
Lead-free, RoHS-compliant plastic 28-pin SPDIP per FindIC/chipdig listings. REACH and conflict minerals status not stated in provided data.
