DSPIC33FJ128GP202-E/MM - 16-bit DSC 128KB 40MIPS | Microchip
MPN: DSPIC33FJ128GP202-E/MM ✓ Active| Qty | Unit Price | Extended |
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| 1 | $0 | $0.00 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
DSPIC33FJ128GP202-E/MM Overview
A digital signal controller combines the computational architecture of a digital signal processor - hardware multiply-accumulate, barrel shifter, and DSP instruction set - with the peripheral integration and ease of use of a microcontroller. Within the power-management hierarchy, a DSC sits between a general-purpose MCU and a dedicated DSP, making the dsPIC33FJ family a common choice for embedded control loops that also need signal processing.
Key features include 8-channel DMA for offloading data movement from the CPU, a dual-channel 16-bit 100 ksps audio DAC, a Cyclic Redundancy Check (CRC) module, up to five 16-bit timers (or up to two 32-bit timers), software-remappable pin functions, and 5V-tolerant I/O with selectable open-drain outputs and internal pull-ups. Per the Microchip datasheet (DS70292G), the device operates from a 3.0V to 3.6V supply.
Architecturally, the dsPIC33FJ128GP202 uses a modified Harvard pipeline with 16-bit data paths and DSP-engine addressing modes (modulo and bit-reversed), enabling deterministic single-cycle MAC operations for filtering and transform algorithms while maintaining interrupt-driven control behavior.
Typical applications include digital power supplies and motor control, industrial automation sensors, and audio signal processing, where the audio DAC and DMA channels directly reduce CPU loading.
Design consideration: the 28-pin QFN requires a well-designed exposed-pad thermal/electrical ground connection; ensure supply decoupling on each VDD pin and keep the OSC1/OSC2 loop short for the external crystal.
This page synthesizes distributor pricing, same-footprint alternatives, and practical design notes not consolidated in the manufacturer datasheet.
Drop-in alternatives for DSPIC33FJ128GP202-E/MM — 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 DSPIC33FJ128GP202-E/MM (same form factor and footprint) — differing in Package, Timers.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33FJ128GP802-E/MM
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33FJ64GP202-E/MM
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33FJ64GP802-E/MM
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33FJ32GP302-E/MM
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33FJ128MC202-E/MM
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$4.13 / Unit
View Datasheet →DSPIC33FJ128GP202-E/MM Maximum Ratings & Electrical Characteristics
| Core Architecture | 16-bit dsPIC33F DSC |
| Program Flash Memory | 128 KB |
| SRAM | 16 KB |
| Maximum CPU Speed | 40 MIPS |
| Supply Voltage Range | 3 V to 3.6 V |
| DMA Channels | 8 |
| Audio DAC | Dual-channel 16-bit, 100 ksps |
| CRC Module | Yes (16-bit Cyclic Redundancy Check) |
| Timers | Up to five 16-bit or up to two 32-bit |
| I/O Features | Software-remappable pin functions, 5V-tolerant pins, open-drain, internal pull-ups |
| Overvoltage Clamp | 5 mA per pin |
| Operating Temperature | -40C to +125C (E grade) |
| Package | 28-QFN-S (MM), 6x6 mm |
| Mounting Type | Surface Mount |
| External Interrupts | Multiple external interrupt sources |
DSPIC33FJ128GP202-E/MM 28-qfn-s (mm), 6x6 mm Pin Configuration Guide
Pin configuration for DSPIC33FJ128GP202-E/MM (28-qfn-s (mm), 6x6 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 DSPIC33FJ128GP202-E/MM.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33FJ128GP202-E/MM is suitable for 6 applications: Digital Power Supplies, Motor Control, Audio Signal Processing, Industrial Automation and Sensing, Portable and Battery-Powered Instruments, Embedded Communications and IoT Gateways.
Digital Power Supplies
The DSPIC33FJ128GP202-E/MM fits switch-mode power supply and PFC control because its 40 MIPS DSP core executes single-cycle multiply-accumulate operations for Proportional-Integral compensators at switching frequencies well above 100 kHz. The 8 DMA channels stream ADC conversion results into SRAM without CPU intervention, keeping control-loop jitter deterministic. Its five 16-bit timers provide time-base and dead-time resources, and the software-remappable pins let designers place PWM and feedback signals optimally on the 28-QFN-S footprint. Running from a 3.0V-3.6V rail with 5V-tolerant I/O and a 5 mA per-pin clamp, it interfaces directly with feedback dividers and optocoupler stages. The -40C to +125C E-grade rating covers industrial power-stage ambient conditions reliably.
Recommended
Motor Control
For BLDC, PMSM, and ACIM control, the DSPIC33FJ128GP202-E/MM provides the deterministic math engine (hardware MAC at 40 MIPS) required for field-oriented control, while the CRC module protects communications with higher-level drives. The remappable pin functions let engineers route capture and PWM-adjacent signals to the optimal QFN-28 pins for gate-driver placement, and multiple external interrupts handle hall-sensor or encoder events with low latency. Eight DMA channels offload current-sampling ADC data, freeing the CPU for observer and estimator algorithms. The 16 KB SRAM holds state vectors and filter histories comfortably. For designs emphasizing complementary high-speed PWM peripherals, pair or substitute with the pin-compatible DSPIC33FJ128MC202-E/MM from the Motor Control family on the identical 28-QFN-S footprint.
Recommended
Audio Signal Processing
The GP202 is directly suited to audio because it integrates a dual-channel 16-bit audio DAC sampling at up to 100 ksps - rare on a 28-pin controller - enabling tone generation, alerting, and simple playback without an external codec. The DSP engine performs FIR/IIR filtering and sample-rate decimation at 40 MIPS with deterministic latency, while DMA channels move audio buffers to and from the 16 KB SRAM with zero CPU copy overhead. Software-remappable pins simplify routing the DAC outputs and serial audio data on the compact 6x6 mm QFN. Combined with the CRC module for certified audio links and the extended -40C to +125C temperature range, it serves industrial intercoms, instrumentation sounders, and embedded voice prompts reliably.
Recommended
Industrial Automation and Sensing
In factory sensor nodes and actuator interfaces, the DSPIC33FJ128GP202-E/MM combines 5V-tolerant I/O with selectable open-drain outputs and internal pull-ups, allowing direct connection to legacy 24V-adjacent logic thresholds via dividers and to open-collector buses without external glue. The CRC module adds hardware data integrity for MODBUS-style serial links, multiple external interrupts service limit switches promptly, and the 128 KB flash stores feature-rich firmware including protocol stacks and local data logging. The -40C to +125C operating range and 3.0V-3.6V supply suit DIN-rail and panel-mounted electronics. Because the family pinout is shared across flash densities per DS70292G, a single PCB can be populated with 32 KB, 64 KB, or 128 KB variants to match product tiers.
Recommended
Portable and Battery-Powered Instruments
Handheld meters, loggers, and diagnostic tools benefit from the DSPIC33FJ128GP202-E/MM's single 3.0V-3.6V supply and the compact 6x6 mm QFN-S package, which saves board area in ergonomic enclosures. The 128 KB flash supports rich UI firmware, data logging, and compensation tables, while 16 KB SRAM buffers measurement records. The DSP engine applies digital filtering to noisy transducer readings - single-cycle MACs make 16-bit FIR filtering inexpensive in CPU time - and the audio DAC can generate user alert tones without a buzzer driver. Remappable pins free PCB routing inside tight enclosures. The E-grade temperature rating tolerates vehicle and outdoor use, and the exposed-pad QFN aids heat spreading in sealed housings with limited airflow.
Recommended
Embedded Communications and IoT Gateways
The DSPIC33FJ128GP202-E/MM serves as a protocol-conversion and edge-processing controller: its CRC engine accelerates frame checking in serial fieldbus links, DMA channels service UART and SPI traffic in the background, and the 40 MIPS core runs packing, filtering, and analytics between messages. 5V-tolerant, remappable I/O connects to both modern 3.3V radios and legacy 5V PLC interfaces, with the 5 mA per-pin overvoltage clamp providing robustness on field-facing lines. The 128 KB flash accommodates multi-protocol stacks with headroom for OTA-update staging. Operating over -40C to +125C from a 3.0V-3.6V rail, it suits outdoor gateways and industrial retrofit nodes where the 6x6 mm QFN conserves PCB area in constrained enclosures.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33FJ128GP202-E/MM — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33FJ128GP802-E/MM | DSPIC33FJ64GP202-E/MM | DSPIC33FJ32GP302-E/MM | DSPIC33FJ128MC202-E/MM |
|---|---|---|---|---|---|
| Package | 28-QFN-S (6x6 mm) | 28-QFN-S (6x6 mm) - same | 28-QFN-S (6x6 mm) - same | 28-QFN-S (6x6 mm) - same | 28-QFN-S (6x6 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Flash | 128 KB | 128 KB | 64 KB | 32 KB | 128 KB |
| Max CPU Speed | 40 MIPS | 40 MIPS | 40 MIPS | 40 MIPS | 40 MIPS |
| Peripheral Family | GP (General Purpose, audio DAC + CRC) | GP802 | GP (identical set) | GP (identical set) | MC (Motor Control PWM set) |
| Operating Temperature | -40C to +125C (E grade) | -40C to +125C (E grade) | -40C to +125C (E grade) | -40C to +125C (E grade) | -40C to +125C (E grade) |
Key Differentiators
- Maximum flash in the drop-in footprint (vs DSPIC33FJ64GP202-E/MM)
- Integrated dual 16-bit 100 ksps audio DAC (vs DSPIC33FJ128MC202-E/MM)
- Hardware CRC plus 8 DMA channels (vs DSPIC33FJ32GP302-E/MM)
Design Notes
The 28-QFN-S (MM) 6x6 mm package includes an exposed pad that serves as the primary ground connection. Solder it to a solid ground plane with an array of thermal vias (typically 4-5 via barrels under the pad); relying on perimeter pins alone for ground degrades both signal integrity and thermal performance. Place 0.1 uF ceramic decoupling capacitors within 2 mm of each VDD pin, and add one bulk 4.7-10 uF capacitor near the device. Estimated: at 40 MIPS the core current is in the tens of mA range, so IR drop is minor if plane continuity is maintained.
This device uses software-remappable peripheral pin selection - do not assume a peripheral sits on a fixed pin. Configure PPS registers (RPINR/RPOR) in code before enabling peripherals, and verify mapping in MPLAB X, since UART, SPI, and input-capture functions can each route to several physical pins. Also note that the part shares the DS70292G family datasheet with 32/64 KB and GPX02/X04 variants; always filter register descriptions for the GP202 28-pin column, as pin counts and peripheral instances differ across family members.
Supply range is 3.0V to 3.6V per DS70292G - do not power from a 5.0V rail. Although I/O pins are 5V-tolerant with a 5 mA per-pin overvoltage clamp, the clamp is not a level translator; design resistor dividers for sustained 5V inputs rather than relying on the clamp. The OSC1/OSC2 crystal loop should be kept short with guard grounding for the primary oscillator, and configuration bits must select the correct crystal range at programming time - an incorrect oscillator configuration is the most common first-boot failure on dsPIC33FJ designs.
Compliance Information
Compliance status not captured in the retrieved web data; confirm via Microchip product page or distributor Material Declaration before production release.
