DSPIC33FJ128GP204-E/PT - 16-bit DSC, 128KB Flash 40MIPS | Microchip
MPN: DSPIC33FJ128GP204-E/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $7.16 | $7.16 |
| 10 | $6.63 | $66.30 |
| 100 | $6.18 | $618.00 |
| 500 | $5.75 | $2,875.00 |
| 1,000 | $5.35 | $5,350.00 |
DSPIC33FJ128GP204-E/PT Overview
A digital signal controller combines the computational architecture of a digital signal processor (DSP) with the peripheral set and ease of use of a microcontroller (MCU). Within the power-management hierarchy of embedded systems, the DSC sits between general-purpose MCUs and dedicated DSPs, making it the preferred choice for control loops that require fast, repetitive mathematical operations such as PID regulation, digital filtering, and transform-based signal processing.
Key features of this device include the dsPIC33F 16-bit RISC core with DSP instruction extensions, 128 KB (128K x 8) of self-programmable Flash, 8 KB of SRAM, 8 DMA channels that move data without CPU intervention, and up to 40 MIPs of throughput at 3.3V operation. The General Purpose (GP) variant includes a rich analog and digital peripheral set: multiple UART/SPI/I2C serial ports, an ADC, output compare and input capture modules, and Peripheral Pin Select (PPS) for flexible pin mapping.
Technically, the dsPIC33F family employs a modified Harvard architecture with a 16-bit data path and DSP engine supporting multiply-accumulate (MAC) operations, rounding, and saturation. The E/PT grade is the extended-temperature member of the family, sharing the same die and pinout as the -40C to +85C industrial (I) grade, which simplifies migration when designs must operate in harsh thermal environments.
Typical applications include industrial motor control and power conversion, digital power supplies, sensor signal conditioning and data acquisition, and automotive-adjacent or industrial control panels requiring extended temperature capability. The combination of DSP throughput and MCU peripherals fits closed-loop control at moderate loop rates.
When designing with this device, remember that all VDD/VSS pairs must be decoupled, ICSP programming requires a matched PGECx/PGEDx pair, and Flash endurance and operating frequency derating must be respected across the full extended temperature range.
This page synthesizes distributor pricing, same-family drop-in alternatives, and practical design notes not found in a single manufacturer datasheet, in one citable reference.
Drop-in alternatives for DSPIC33FJ128GP204-E/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 DSPIC33FJ128GP204-E/PT (same form factor and footprint) — differing in Package, Program Memory (Flash), Supply Voltage.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33FJ128GP204-I/PT
✅ Drop-In✓ In Stock
$4.61 / Unit
View Datasheet →DSPIC33FJ128GP204A-E/PT
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33FJ64GP204-E/PT
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33FJ128GP804-E/PT
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33FJ128MC204-E/PT
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33FJ128GP204-E/PT Maximum Ratings & Electrical Characteristics
| Core Architecture | 16-bit dsPIC33F RISC with DSP engine |
| Program Memory (Flash) | 128 KB (128K x 8) |
| SRAM | 8 KB |
| Maximum Clock / Performance | 40 MIPs |
| Supply Voltage | 3.3 V (dsPIC33F family, 3.0 V to 3.6 V) |
| DMA Channels | 8 |
| Timers | 7 |
| External Interrupts | 3 |
| Serial Interfaces | 3 serial I/O ports (UART/SPI/I2C) |
| Technology | CMOS |
| Operating Temperature | -40C to +125C (Extended, E grade) |
| Package | 44-TQFP (10x10 mm) |
| Mounting Type | Surface Mount |
| Pin Count | 44 |
| Programming / Debug | ICSP via PGECx/PGEDx pair (multiple pairs available) |
| Peripheral Pin Select | Yes (PPS) |
| Lifecycle Status | In Production |
DSPIC33FJ128GP204-E/PT 44-tqfp (10x10 mm) Pin Configuration Guide
Pin configuration for DSPIC33FJ128GP204-E/PT (44-tqfp (10x10 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 DSPIC33FJ128GP204-E/PT.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33FJ128GP204-E/PT is suitable for 6 applications: Industrial Motor Control, Digital Power Supplies, Sensor Signal Conditioning and Data Acquisition, Audio and Speech Signal Processing, Industrial Automation and Control Panels, Test and Measurement Instruments.
Industrial Motor Control
The DSPIC33FJ128GP204-E/PT is well suited to motor control because its 16-bit DSP engine executes single-cycle MAC instructions at 40 MIPs, enabling field-oriented control and PID current loops with deterministic latency, while 8 DMA channels stream ADC samples to RAM without CPU loading. The GP peripheral set provides input capture and output compare modules that pair with the ADC for closed-loop commutation of BLDC, PMSM, and ACIM motors. Its extended -40C to +125C E grade tolerates drive-enclosure heat rise near power stages. Placed as the main control IC with 3.3V decoupled rails, the device trades PWM-channel specialization of the MC variants for the GP analog flexibility many retrofit drives require.
Recommended
Digital Power Supplies
In digital SMPS and power-conversion topologies, the GP204's 40 MIPs DSP core supports high-frequency voltage- and current-mode control loops, nonlinear compensators, and power-metering math in one device. The 8-channel DMA keeps ADC-to-control-loop data movement deterministic, and Peripheral Pin Select lets engineers map PWM-adjacent digital functions to optimal pins on the 44-TQFP footprint. The E-grade -40C to +125C range is valuable inside sealed power supplies where ambient near the controller exceeds +85C. The controller typically sits on the secondary side, sampling output voltage with the on-chip ADC and driving PWM gates through isolation; unlike analog controllers it enables adaptive soft-start and telemetry over UART/I2C.
Recommended
Sensor Signal Conditioning and Data Acquisition
The GP204 fits multichannel acquisition systems that need on-board DSP filtering: the 16-bit core applies FIR/IIR filters to ADC streams using hardware MAC support at 40 MIPs, while DMA moves samples to the 8 KB SRAM without interrupt storms. Its serial ports (3 UART/SPI/I2C-class interfaces) forward processed data to host systems, and PPS remaps these functions as board layout demands. The extended temperature range supports sensor nodes mounted on industrial machinery. Compared with an MCU-plus-external-DSP chip set, the single 44-TQFP DSC reduces BOM count and board area; the trade-off is the 10-bit-class ADC of this family generation, so external high-resolution ADCs remain necessary when 16-bit measurement accuracy is required.
Recommended
Audio and Speech Signal Processing
Speech compression, noise suppression, and audio effects benefit directly from the dsPIC33F DSP engine: single-cycle MAC, hardware saturation, and bit-reversed addressing accelerate FFTs and codec filters at 40 MIPs while the GP family's audio-oriented serial ports stream I2S-style data. The 128 KB Flash accommodates codec tables and firmware-side DSP libraries, and DMA offloads sample transfer to preserve real-time deadlines. In industrial intercoms, PA controllers, and instrumentation audio paths, the E-grade temperature range extends deployment into unventilated enclosures. Designers should budget the 8 KB SRAM carefully, as large delay lines and FFT buffers dominate audio working sets in this memory size.
Recommended
Industrial Automation and Control Panels
Factory automation nodes - PLC I/O modules, HMI controllers, and distributed control slaves - use the GP204's seven timers, three external interrupts, and three serial ports to manage scheduling, safety interlocks, and Modbus/CAN-adjacent communications concurrently. The 40 MIPs core executes control logic plus arithmetic without a second processor, and 128 KB Flash retains multiple protocol stacks and OTA-style update images. The E grade -40C to +125C range suits control panels mounted near drives, heaters, or outdoor cabinets. Development is streamlined by MPLAB X with the Explorer 16/32 Development Board PIM ecosystem, allowing rapid firmware iteration before committing panel hardware layouts around the 44-TQFP footprint.
Recommended
Test and Measurement Instruments
Bench and portable instruments use the GP204 as a real-time front-end controller: the 40 MIPs DSP core performs trigger decision math, averaging, and calibration compensation, while DMA-fed ADC sampling and multiple timers produce precise timebases. Three serial ports communicate with displays, host PCs, and instrument buses, and PPS allows the PCB designer to route those links cleanly on the 10x10 mm TQFP board plan. The extended -40C to +125C rating matters for field-deployed loggers and automotive-test gear. Firmware-side flexibility - self-programmable Flash enables field calibration updates - is a decisive advantage over fixed-function analog front ends in long-lived test equipment designs.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33FJ128GP204-E/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33FJ128GP204-I/PT | DSPIC33FJ128GP204A-E/PT | DSPIC33FJ64GP204-E/PT | DSPIC33FJ128GP804-E/PT | DSPIC33FJ128MC204-E/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 | 44-TQFP (10x10 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 128 KB | 128 KB | 128 KB | 64 KB | 128 KB | 128 KB |
| Performance | 40 MIPs | 40 MIPs | 40 MIPs | 40 MIPs | 40 MIPs | 40 MIPs |
| Operating Temperature | -40C to +125C (E grade) | -40C to +85C (I grade) | -40C to +125C (E grade) | -40C to +125C (E grade) | -40C to +125C (E grade) | -40C to +125C (E grade) |
| Peripheral Focus | General Purpose (GP) | General Purpose (GP) | General Purpose (GP, A-revision) | General Purpose (GP) | General Purpose (GP804 pin variant) | Motor Control (MC) |
| Drop-in Pin Compatibility | Reference (44-TQFP) | Pin-to-pin identical | Pin-to-pin identical | Pin-to-pin identical | Same package, verify pinout (GP804 allocation differs) | Same package, MC peripheral allocation differs |
| Lifecycle Status | In Production | In Production | In Production | In Production | In Production | In Production |
Key Differentiators
- Extended -40C to +125C temperature qualification (vs DSPIC33FJ128GP204-I/PT)
- Errata-corrected A-revision silicon available (vs DSPIC33FJ128GP204A-E/PT)
- Balanced 128 KB Flash for GP applications (vs DSPIC33FJ64GP204-E/PT)
- General Purpose analog-oriented peripheral set (vs DSPIC33FJ128MC204-E/PT)
Design Notes
The dsPIC33F family operates from a 3.3V nominal supply (3.0V to 3.6V). Decouple every VDD/VSS pair with 0.1 uF ceramics placed within 2 mm of the pins, plus one bulk 4.7-10 uF per device. On the 44-TQFP, all VDD and VSS pins MUST be connected - omitting any pair is a common cause of erratic brown-out and programming failures. Verify the device's frequency-derating and voltage limits against the family datasheet (70292G) across the full -40C to +125C E-grade range, not just room temperature.
ICSP programming requires a matched PGECx/PGEDx pair: if ICSPCLK uses PGEC2, ICSPDAT must use PGED2 - mixing pairs from different indices prevents programming. Expose the chosen pair plus MCLR on a standard 5-pin programming header even if production boards are programmed in-circuit through a connector. When substituting the A-revision or an I-grade part on an existing PCB, read the revision-specific errata sheet; dsPIC33F errata items have historically affected oscillators and peripheral modules and may require firmware workarounds.
Use Peripheral Pin Select (PPS) during layout to route UART/SPI functions away from analog traces near the ADC inputs; locking PPS registers after configuration prevents runtime remap faults. Keep the analog supply and ADC reference traces on a quiet region of the board with a local ground pour, separate from PWM and serial switching currents. The 10x10 mm TQFP has 0.8 mm pitch - specify a solder-paste stencil and inspection criteria per your assembly house's fine-pitch process, and note MSL handling for the extended-temperature package before reflow.
Estimated: the TQFP-44 junction-to-ambient thermal resistance is on the order of 50-70 C/W (consult the family datasheet package section for the exact value). With typical DSC dissipation of a few hundred milliwatts at 40 MIPs and 3.3V, junction rise above ambient stays well under 25C, leaving ample margin in a +125C ambient application. However, confirm your firmware's actual current (DMA-active vs idle, oscillator choice) rather than assuming worst-case, and avoid placing heat-generating components adjacent to the controller in sealed enclosures.
Compliance Information
Compliance data not present in the provided web data; consult the Microchip product page environmental data sheet for this MPN. Not listed as AEC-Q100 qualified; the E grade denotes extended temperature range, not automotive qualification.
