dsPIC33FJ32GP204-I/PT - 40 MIPS 16-bit DSC 32KB Flash | Microchip
MPN: DSPIC33FJ32GP204-I/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $5.62 | $5.62 |
| 10 | $5.06 | $50.60 |
| 100 | $4.51 | $451.00 |
| 500 | $4.12 | $2,060.00 |
| 1,000 | $3.78 | $3,780.00 |
DSPIC33FJ32GP204-I/PT Overview
A digital signal controller combines the control peripherals and ease of use of a microcontroller with the computational throughput of a digital signal processor, placing it within the broader hierarchy of 16-bit microcontrollers and embedded processors. DSCs are optimized for executing digital filter algorithms and high-speed precision digital control loops, making them ideal for applications that must perform under pressure.
Key features include up to four high-speed comparators with direct connection to the PWM module, a 10-bit high-speed ADC, high-speed PWM outputs, and Peripheral Pin Select (PPS), which allows many digital peripherals to be remapped to any of the 35 available I/O pins. The device executes DSP instructions such as single-cycle MAC with dual 40-bit accumulators, enabling efficient FIR/IIR filtering without an external DSP.
Architecturally, the dsPIC33F uses a modified Harvard RISC pipeline with a 16-bit data path and C compiler-friendly instruction set, operating from a 3.0 V to 3.6 V single supply. In-Circuit Serial Programming (ICSP) and debugging via PGECx/PGEDx pins simplify production programming and field updates.
Typical applications include digital power supplies, motor control (PMSM, BLDC, ACIM), sensor signal conditioning, digital filtering, and industrial control systems where precise analog integration and fast control loops are required.
Design consideration: keep ICSP trace lengths short per the Microchip datasheet, and account for the 3.0-3.6 V supply window when interfacing with 5 V systems.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for DSPIC33FJ32GP204-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 DSPIC33FJ32GP204-I/PT (same form factor and footprint) — differing in Core Architecture, Supply Voltage, PWM, Package, RoHS Status.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33FJ32GP204-E/PT
✅ Drop-In✓ In Stock
$3.15 / Unit
View Datasheet →DSPIC33FJ32GP304-I/PT
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$2.29 / Unit
View Datasheet →DSPIC33FJ16GP304-I/PT
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33FJ32GP204-I/PT Maximum Ratings & Electrical Characteristics
| Core Architecture | 16-bit dsPIC RISC |
| Maximum CPU Frequency | 40 MHz |
| Performance | 40 MIPS |
| Program Memory Size | 32 KB Flash |
| RAM Size | 2 KB |
| Supply Voltage | 3 V to 3.6 V |
| I/O Ports / Pins | 35 |
| ADC | 10-bit high-speed ADC |
| Comparators | Up to 4 high-speed comparators |
| PWM | High-speed PWM |
| Peripheral Pin Select | Yes (PPS digital peripheral remapping) |
| Data Bus Width | 16 bit |
| Package Type | 44-TQFP, 10 x 10 mm, 1 mm height, 0.8 mm pitch |
| Operating Temperature | -40C to +85C (I grade) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant, lead-free plastic |
| ECCN (US) | 3A991.a.2 |
| Automotive Qualified | No |
DSPIC33FJ32GP204-I/PT 44-tqfp, 10 x 10 mm, 1 mm height, 0.8 mm pitch Pin Configuration Guide
Pin configuration for DSPIC33FJ32GP204-I/PT (44-tqfp, 10 x 10 mm, 1 mm height, 0.8 mm pitch 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 DSPIC33FJ32GP204-I/PT.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33FJ32GP204-I/PT is suitable for 6 applications: Digital Power Supplies, Brushless DC and PMSM Motor Control, Sensor Signal Conditioning and Digital Filtering, Industrial Control and Automation Nodes, Audio Signal Processing, Portable and Battery-Powered Instruments.
Digital Power Supplies
The dsPIC33FJ32GP204-I/PT fits digitally controlled AC-DC and DC-DC converters because its high-speed PWM can be driven directly by up to four high-speed comparators, creating a hardware fast current-limit loop that does not wait on CPU latency. The 40 MIPS 16-bit core executes PID or 2p2z compensator routines in a few microseconds, while the 10-bit ADC samples output voltage and current synchronously with the PWM period via automatic triggers. Peripheral Pin Select lets engineers route PWM outputs and ADC triggers to optimal pins, simplifying layout of the power stage. Typical usage places the DSC between the sensing divider and the power-stage gate drivers, replacing analog compensation networks with firmware. The trade-off versus a pure analog controller is firmware development effort, but it yields programmable soft-start, fault logging, and telemetry.
Recommended
Brushless DC and PMSM Motor Control
For BLDC and permanent-magnet synchronous motor drives, the dsPIC33FJ32GP204-I/PT provides the essential combination of high-speed PWM, four comparators for overcurrent protection, and a 40 MIPS core running field-oriented control (FOC) or trapezoidal commutation. The single-cycle MAC and dual 40-bit accumulators execute the Clarke/Park transforms and PI current loops efficiently without floating-point hardware, and the 10-bit ADC captures phase currents at the PWM center for low-noise sampling. The 35 I/O pins host Hall sensor inputs, encoder interfaces, and UART/CAN-style communication via PPS remapping. Typical implementation: the DSC drives a six-MOSFET inverter through gate drivers, with the comparators wired directly to shunt resistors for cycle-by-cycle current limiting. Firmware flexibility allows sensorless algorithms to be field-updated through ICSP Flash programming.
Recommended
Sensor Signal Conditioning and Digital Filtering
The dsPIC33FJ32GP204-I/PT is explicitly designed to execute digital filter algorithms: the DSP engine's single-cycle MAC and dual 40-bit accumulators implement FIR and IIR filters on 10-bit ADC data with deterministic latency. In conditioning front ends for pressure, load-cell, or acoustic sensors, the device oversamples the ADC and applies decimation filters in firmware, achieving effective resolutions beyond the raw 10-bit converter. Peripheral Pin Select maps UART, SPI, or I2C-equivalent functions onto the most convenient of the 35 I/O pins, keeping the analog inputs adjacent to the sensor connector. The 2 KB SRAM buffers several hundred samples for block processing. Compared with a separate DSP plus MCU two-chip solution, this single 44-pin TQFP device reduces board area, BOM count, and firmware complexity while maintaining 40 MIPS throughput.
Recommended
Industrial Control and Automation Nodes
In industrial automation, the dsPIC33FJ32GP204-I/PT serves as a compact control node combining real-time control loops with communication. Its -40C to +85C industrial temperature rating, 3.0-3.6 V operation, and RoHS-compliant 44-pin TQFP fit DIN-rail and machine-mounted controller boards. The high-speed PWM handles heater, valve, or actuator drive; the comparators provide fast fault shutdown; and the 10-bit ADC reads potentiometers, thermistors, and current shunts. PPS lets one PCB serve multiple product variants by remapping serial peripherals in firmware, reducing SKU count. Code of up to 32 KB accommodates PID logic plus a Modbus-style serial protocol stack. Designers should keep ICSP programming traces short per the Microchip datasheet so field firmware updates remain reliable on the factory floor.
Recommended
Audio Signal Processing
The dsPIC33FJ32GP204-I/PT can act as a low-cost audio effects and processing engine: its DSP core performs 16-bit fixed-point convolution, echo, AGC, or tone-control filtering at 40 MIPS, sufficient for single- or dual-channel audio at 48 kHz sample rates. The 10-bit ADC and available PWM/compare outputs serve in cost-sensitive voice and alert-tone paths where 24-bit audiophile fidelity is not required; for higher fidelity, an external audio codec can be attached via SPI/UART through PPS-mapped pins. The 2 KB SRAM supports delay lines of a few milliseconds, suitable for echo and compression effects. Because the device integrates analog comparators and PWM, it also fits class-D amplifier modulation stages. Compared with a dedicated audio DSP, the dsPIC33F trades noise floor and bit depth for integration, cost, and a single-chip control-plus-signal-path solution.
Recommended
Portable and Battery-Powered Instruments
Handheld measurement and diagnostic instruments benefit from the dsPIC33FJ32GP204-I/PT's single-chip integration: 40 MIPS processing, on-chip ADC and comparators, and flexible I/O reduce board space in the 10 x 10 mm TQFP-44 footprint. Running from a 3.0-3.6 V rail, it pairs directly with a single lithium cell through a small LDO. The device can clock from its internal fast RC oscillator, eliminating a crystal and saving power and cost, while still supporting precise timing via software calibration when needed. Typical uses include portable gauge calibrators, HVAC diagnostic tools, and handheld medical-style testers that sample a sensor, apply digital filtering, and present results on a segment LCD driven from spare I/O. The 32 KB Flash retains firmware and lookup tables across battery swaps, and ICSP allows recalibration tables to be programmed at final test.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33FJ32GP204-I/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33FJ32GP204-E/PT | DSPIC33FJ32GP304-I/PT | DSPIC33FJ16GP304-I/PT |
|---|---|---|---|---|
| Package | 44-TQFP (10x10) | 44-TQFP (10x10) - same | 44-TQFP (10x10) - same | 44-TQFP (10x10) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core / Performance | 16-bit dsPIC, 40 MHz / 40 MIPS | 40 MHz / 40 MIPS | 40 MHz / 40 MIPS | 40 MHz / 40 MIPS |
| Program Memory (Flash) | 32 KB | 32 KB | 16 KB | 16 KB |
| SRAM | 2 KB | 2 KB | 2 KB | 2 KB |
| I/O Pins | 35 | 35 | 35 | 35 |
| Operating Temperature | -40C to +85C (I) | -40C to +125C (E) | -40C to +85C (I) | -40C to +85C (I) |
| 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 |
Key Differentiators
- Extended temperature option in identical footprint (vs DSPIC33FJ32GP204-E/PT)
- Double the Flash of the GP304 family members (vs DSPIC33FJ32GP304-I/PT)
- Hardware comparator-to-PWM fast loop (vs DSPIC33FJ16GP304-I/PT)
Design Notes
Keep the trace length between the ICSP connector and the PGECx/PGEDx pins as short as possible, as recommended in Microchip datasheet 70290J. Long ICSP traces pick up noise and cause unreliable in-circuit programming, especially in motor-drive or power-converter boards with high dv/dt. Place a 3-pin (or 5-pin) programming header within a few centimeters of the device, series resistors of 100-200 ohms on PGEDx to isolate target circuitry, and route programming signals away from PWM and switch-node traces.
The dsPIC33FJ32GP204 requires one VDD/VSS pair per side to be properly decoupled: place 0.1 uF ceramic capacitors at every VDD pin within 2 mm of the pin, plus one bulk 4.7-10 uF capacitor per board. All VDD pins must be tied to the same 3.0-3.6 V rail - do not leave any VDD pin unconnected. Check the VCAP configuration in the datasheet (this device family uses an internal regulator with external capacitor on designated pin); incorrect VCAP capacitance causes unstable core voltage and erratic resets.
Remember the 3.0 V to 3.6 V supply window: this dsPIC33F is not 5 V tolerant in the way PIC18 parts are, so level-shift or series-resistor limit any interface to 5 V logic. Also, the -40C to +85C 'I' grade is insufficient for automotive under-hood or enclosed high-power environments - specify the -E variant (-40C to +125C) if ambient near the device can exceed 85C. Finally, Peripheral Pin Select (PPS) must be configured before using remapped UART/SPI/PWM pins; forgetting PPS lock (if enabled) is a frequent firmware bring-up failure.
Compliance Information
EU RoHS compliant, lead-free plastic 44-TQFP, per Arrow product data. ECCN (US) 3A991.a.2. Not automotive qualified; no PPAP.
