DSPIC33FJ32GP304T-I/PT - 16-Bit 40 MIPS DSC 32KB Flash | Microchip
MPN: DSPIC33FJ32GP304T-I/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.12 | $6.12 |
| 10 | $5.51 | $55.10 |
| 25 | $5.14 | $128.50 |
| 100 | $4.59 | $459.00 |
| 1,000 | $4.06 | $4,060.00 |
DSPIC33FJ32GP304T-I/PT Overview
A digital signal controller combines the computational engine of a microcontroller with DSP-grade multiply-accumulate hardware on one chip. In the system hierarchy, the dsPIC33F family sits between general-purpose microcontrollers (such as the PIC18) and dedicated DSPs, giving designers a single-chip solution that executes control loops and real-time signal processing without a separate DSP device.
Key features include a 16-bit modified Harvard RISC core with DSP instructions, 8-channel DMA, 7 timers, and 3 serial I/O ports (UART, SPI, I2C). The family integrates high-speed PWM, an ADC, and up to four high-speed comparators with direct connections, enabling motor control and power-conversion topologies without external analog front-end components. The T suffix denotes tape-and-reel packaging for automated assembly.
Architecturally, the core pairs the 16-bit MCU pipeline with two 40-bit accumulators, 17-bit x 17-bit single-cycle multiplication and division support, so FIR filters, PID loops, and transforms execute deterministically at 40 MIPS. DMA offloads peripheral data movement from the CPU, reducing jitter in control applications.
Typical applications include digital power supplies and LED drivers, sensorless BLDC and PMSM motor control, audio signal processing, and industrial sensing nodes that need integrated analog plus fast math.
Design consideration: decouple the 3.3V rail with 0.1uF ceramics at every VDD/VSS pair and keep the analog supply clean to preserve ADC accuracy; Flash-based self-programming lets field updates over UART or CAN without a separate bootloader chip.
This page synthesizes distributor pricing, drop-in family alternatives, and practical design notes not found in the manufacturer datasheet, with prices as of 2026-09-27.
Drop-in alternatives for DSPIC33FJ32GP304T-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 DSPIC33FJ32GP304T-I/PT (same form factor and footprint) — differing in Core Architecture, Supply Voltage, Package, Operating Temperature, I/O Ports.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33FJ32GP304-I/PT
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$2.29 / Unit
View Datasheet →DSPIC33FJ32GP304T-E/PT
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33FJ32GP204-I/PT
✅ Drop-In✓ In Stock
$3.78 / Unit
View Datasheet →DSPIC33FJ32GP204-E/PT
✅ Drop-In✓ In Stock
$3.15 / Unit
View Datasheet →DSPIC33FJ32MC304-I/PT
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$3.78 / Unit
View Datasheet →DSPIC33FJ16GP304-I/PT
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33FJ32GP304T-I/PT Maximum Ratings & Electrical Characteristics
| Core Architecture | 16-bit dsPIC33F RISC with DSP engine |
| Maximum Clock Speed | 40 MHz |
| Performance | 40 MIPS |
| Program Memory | 32 KB (32K x 8) Flash |
| RAM Size | 4 KB SRAM |
| Supply Voltage | 3 V to 3.6 V |
| I/O Ports | 35 I/O |
| DMA Channels | 8 |
| Timers | 7 |
| Serial Interfaces | 3 serial I/O ports (UART, SPI, I2C) |
| Analog Peripherals | ADC, high-speed PWM, comparators |
| Package Type | 44-TQFP, 10 x 10 mm, 1 mm height, plastic |
| Mounting Type | Surface Mount |
| Operating Temperature | -40C to +85C (I grade) |
| Packaging | Tape and Reel (T suffix) |
| Lead Free | Yes |
| Lifecycle Status | Active |
DSPIC33FJ32GP304T-I/PT 44-tqfp, 10 x 10 mm, 1 mm height, plastic Pin Configuration Guide
Pin configuration for DSPIC33FJ32GP304T-I/PT (44-tqfp, 10 x 10 mm, 1 mm height, plastic 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/PT.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33FJ32GP304T-I/PT is suitable for 6 applications: Digital Power Supplies, BLDC/PMSM Motor Control, Audio Signal Processing, Industrial Sensing Nodes, Embedded Control and HMI, Power Monitoring and Metering.
Digital Power Supplies
The DSPIC33FJ32GP304T-I/PT fits digital power conversion because its high-speed PWM, integrated ADC, and up to four high-speed comparators with direct connections close control loops on a single chip. Running at 40 MIPS with single-cycle MAC instructions, the core executes voltage-mode or current-mode compensators in the tens-of-kHz range with deterministic latency, and the 8 DMA channels stream ADC samples into 4KB SRAM without CPU loading. It is typically placed in the feedback path between output sensing dividers and the power stage gate drivers, replacing analog error amplifiers with firmware. Unlike an analog controller, firmware gains and nonlinearities adapt at runtime; the trade-off is a mandatory firmware development effort and careful PWM dead-time verification.
Recommended
BLDC/PMSM Motor Control
Sensorless BLDC and PMSM drives benefit directly from this DSC's combination of 40 MIPS DSP math, high-speed PWM, and comparators. Field-oriented control demands a fast current loop: the integrated ADC samples phase currents, the DMA moves samples without CPU intervention, and the DSP engine computes Park/Clarke transforms and PID stages within the PWM period. The 44-TQFP package exposes 35 I/O, enough for a three-phase inverter, encoder or hall inputs, and UART/CAN communication. According to the Microchip family description, comparators connect directly to PWM for cycle-by-cycle overcurrent protection without software delay. Choose the DSPIC33FJ32MC304 drop-in variant if you need motor-control-specific PWM complements.
Recommended
Audio Signal Processing
The GP (general purpose) tier of the dsPIC33FJ family targets audio and sensing signal chains where integrated analog and fast math matter. The 40-bit accumulators and single-cycle multiply-accumulate support FIR and IIR filters, automatic gain control, and tone generation at 40 MIPS, which is sufficient for audio preprocessing below 48 kHz sample rates. The 3 serial I/O ports implement I2S-style data links via SPI or talk to audio codecs over I2C, and 8 DMA channels keep sample streams continuous without interrupt storms. The 3.0V to 3.6V supply keeps the analog front end quiet when decoupled properly. For full-fidelity audio DSP workloads, a dedicated codec plus this DSC remains a common low-cost architecture.
Recommended
Industrial Sensing Nodes
Factory and process sensing nodes use the DSPIC33FJ32GP304T-I/PT to combine acquisition, filtering, and communication on one chip. The integrated ADC plus comparators digitize sensor front ends directly, while DSP filtering rejects line-frequency noise in firmware instead of with expensive analog stages. Three serial ports cover RS-485-style UART links, SPI sensor buses, and I2C to calibration EEPROMs simultaneously, and the industrial -40C to +85C rating matches harsh cabinet environments. The 8-channel DMA keeps ADC streaming deterministic at high sample rates, and 4KB SRAM holds filter history and small protocol buffers. The 44-TQFP 10x10 mm footprint suits dense DIN-rail and cable-mounted module PCBs.
Recommended
Embedded Control and HMI
General embedded controllers and human-machine interfaces leverage the 35 I/O, 7 timers, and Flash self-programming of this DSC. The 40 MIPS core runs state machines, display refresh, and keypad scanning with ample headroom, while the 32KB Flash stores application code plus a bootloader for field updates over UART. High-speed PWM can drive backlight dimming or buzzer outputs without extra peripherals. Compared with an 8-bit PIC18 controller, the 16-bit core handles 16-bit arithmetic and table lookups natively, cutting loop times roughly by half or better per MHz. The industrial temperature range and lead-free 44-TQFP package support standard reflow assembly for control panels, meters, and small appliances.
Recommended
Power Monitoring and Metering
Energy metering and power-quality monitoring designs fit this part's analog-plus-DSP profile well. The ADC samples voltage and current channels simultaneously, and the DSP engine computes RMS, active/reactive power, and harmonic content with single-cycle MAC operations at 40 MIPS, sufficient for fundamental-frequency extraction in 50/60 Hz systems with margin for higher harmonics. DMA channels maintain gapless sample streams into the 4KB SRAM ring buffers so no cycles are missed between ADC conversions and computation. Comparators provide fast threshold alarms independent of software. The 3.0V to 3.6V single-rail operation simplifies isolation design, and UART links report data to a gateway while keeping the MCU dedicated to measurement.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33FJ32GP304T-I/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33FJ32GP304-I/PT | DSPIC33FJ32GP304T-E/PT | DSPIC33FJ32GP204-I/PT | DSPIC33FJ16GP304-I/PT |
|---|---|---|---|---|---|
| Package | 44-TQFP (10x10 mm) | 44-TQFP (10x10 mm) - same | 44-TQFP (10x10 mm) - same | 44-TQFP (10x10 mm) - same | 44-TQFP (10x10 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core / Performance | 16-bit dsPIC33F, 40 MIPS | 16-bit, 40 MIPS | 16-bit, 40 MIPS | 16-bit, 40 MIPS | 16-bit, 40 MIPS |
| Flash Memory | 32 KB | 32 KB | 32 KB | 32 KB | 16 KB |
| Operating Temperature | -40C to +85C (I) | -40C to +85C | -40C to +125C | -40C to +85C | -40C to +85C |
| Peripheral Tier | GP (general purpose) analog set | GP | GP | GP (reduced analog set) | GP |
| Packaging | Tape & Reel (T) | Tray | Tape & Reel | Tray | Tape & Reel |
Key Differentiators
- Full 32KB Flash at GP-tier cost (vs DSPIC33FJ16GP304-I/PT)
- Industrial temperature at lower cost than extended grade (vs DSPIC33FJ32GP304T-E/PT)
- Larger analog/peripheral complement than 20x tier (vs DSPIC33FJ32GP204-I/PT)
Design Notes
The 44-TQFP provides multiple VDD/VSS pairs; connect all of them and place a 0.1uF ceramic capacitor at every supply pin pair, plus one bulk 4.7uF to 10uF per rail. Keep the analog supply region isolated from PWM and switching-node routing to preserve ADC and comparator accuracy. Route the crystal or external clock traces short and guard them with ground. Estimated: at 40 MIPS with typical I/O loading, core current stays in the tens-of-mA range, so IR drop on a 2-layer board is minor, but decoupling placement dominates noise performance.
The dsPIC33FJ core is a 3.0V to 3.6V device and is not 5V tolerant; level-shift any 5V signal interfaces (RS-232, legacy sensors). Confirm the compiler-configured clock source and PLL settings before first programming - a mismatched oscillator configuration is the most common bring-up failure on this family. When using DMA with the ADC, ensure buffer sizes fit within the 4KB SRAM alongside the stack and heap; overflow manifests as intermittent corruption rather than a clean fault.
The 44-TQFP (10x10 mm) plastic package in a 3.3V, sub-100mA design dissipates well under 0.5W (Estimated: P = 3.3V x ~60mA typical core-plus-I/O current, roughly 0.2W), so no heatsink is needed within the -40C to +85C industrial rating. For the -E extended-grade variant used above 85C ambient, verify total dissipation against the datasheet junction limits; reducing I/O drive currents and PWM loading are the first levers. Solid ground pour under the package further lowers the effective thermal resistance.
Compliance Information
Package described as lead-free plastic per digchip specification data ('LEAD FREE, PLASTIC' 44-TQFP). REACH, halogen-free, and conflict minerals status not stated in provided data.
