DSPIC33FJ128GP706T-I/PT - 16-bit 40 MIPS DSC 128KB Flash | Microchip
MPN: DSPIC33FJ128GP706T-I/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $7.85 | $7.85 |
| 10 | $7.07 | $70.70 |
| 100 | $5.85 | $585.00 |
| 500 | $5.3 | $2,650.00 |
| 1,000 | $4.88 | $4,880.00 |
DSPIC33FJ128GP706T-I/PT Overview
A digital signal controller blends the control peripherals of a microcontroller with the multiply-accumulate engine of a DSP in a single chip, sitting in the system hierarchy between a general-purpose MCU (such as the PIC18 family) and a dedicated DSP or application processor. DSCs are the preferred choice for embedded control loops that also need real-time math, such as FOC motor control, digital power conversion, and audio processing.
Key features of this device include a 16-bit modified Harvard architecture core running at 40 MIPS, 128KB Flash with self-programming capability via In-Circuit Serial Programming (ICSP), and multiple PGECx/PGEDx pin pairs for in-circuit debugging. The GP (General Purpose) peripheral set includes high-speed ADC, UART, SPI, I2C, and input capture/output compare channels, supporting a broad range of control and signal-chain designs.
Architecturally, the dsPIC33F family succeeds the 5V-oriented 30 MIPS dsPIC30F family, bringing 3.3V operation, lower power, and higher MIPS to the same 16-bit programming model. Code written for dsPIC30F ports with minimal changes, and the MPLAB X IDE with XC16 compiler supports the full family.
Typical applications include industrial motor control, digital power supplies (AC-DC, DC-DC), sensor signal conditioning, and general embedded control where DSP-class math is required. The tape-and-reel (T) suffix suits automated SMT assembly; the -I temperature grade covers -40C to +85C industrial use.
Design considerations: budget decoupling capacitors on all VDD pins, honor the 3.0V-3.6V supply range, and verify migration compatibility before substituting family members, since peripheral sets (for example GS-series high-speed PWM) differ between variants.
This page adds value beyond the datasheet by synthesizing distributor stock, drop-in family alternatives, parameter comparisons, and practical design notes in one reference.
Drop-in alternatives for DSPIC33FJ128GP706T-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 DSPIC33FJ128GP706T-I/PT (same form factor and footprint) — differing in Core Architecture, Packaging, Programming Interface, Package, Operating Temperature.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33FJ128GP706A-E/PT
✅ Drop-In✓ In Stock
$5.9 / Unit
View Datasheet →DSPIC33FJ128GP206AT-I/PT
✅ Drop-In✓ In Stock
$4.6 / Unit
View Datasheet →DSPIC33FJ128GP310T-I/PT
✅ Drop-In✓ In Stock
$5.46 / Unit
View Datasheet →DSPIC33FJ64GS606-I/PT
✅ Drop-In📋 Reference alternative (not in catalog)
PIC24FJ128GA006T-I/PT
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33FJ128GP706T-I/PT Maximum Ratings & Electrical Characteristics
| Core Architecture | 16-bit dsPIC33F modified Harvard |
| Maximum CPU Speed | 40 MIPS |
| Program Memory Size | 128KB (128K x 8) Flash |
| Family | dsPIC33F (GP series) |
| Product Type | Digital Signal Controller (DSC) |
| Package | 64-TQFP (10x10 mm) |
| Operating Temperature Range | -40C to +85C (I grade) |
| Programming Interface | ICSP via PGECx/PGEDx pins |
| Debug Interface | ICSP / In-Circuit Debug via PGECx/PGEDx |
| Mounting Type | Surface Mount |
| Packaging | Tape & Reel (T suffix) |
| RoHS Status | Compliant |
| Typical Applications | Motor control, digital power, embedded control |
| Compatible Dev Tool | Explorer 16/32 Development Board (PIM) |
DSPIC33FJ128GP706T-I/PT 64-tqfp (10x10 mm) Pin Configuration Guide
Pin configuration for DSPIC33FJ128GP706T-I/PT (64-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 DSPIC33FJ128GP706T-I/PT.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33FJ128GP706T-I/PT is suitable for 6 applications: Industrial Motor Control, Digital Power Supplies, Sensor Signal Conditioning, Embedded Control & Automation, Audio & Speech Processing, Lighting & Ballast Control.
Industrial Motor Control
The DSPIC33FJ128GP706T-I/PT fits sensorless and encoder-based motor drives because its 40 MIPS DSP core executes field-oriented control (FOC) with single-cycle multiply-accumulate operations, while GP-series output-compare and PWM peripherals drive three-phase inverter stages. ADC channels sample phase currents and DC-bus voltage synchronously with the PWM carrier, keeping current-loop latency low. Place the DSC between gate-driver inputs and current-sense conditioning, using the 128KB Flash to hold protection state machines plus commutation tables. Unlike a plain MCU, no external DSP is needed, but unlike GS-series parts, PWM resolution is conventional, so very high-frequency digital-power topologies may prefer DSPIC33FJ64GS606.
Recommended
Digital Power Supplies
In digitally controlled AC-DC and DC-DC converters, the DSPIC33FJ128GP706T-I/PT closes voltage and current loops in firmware: the ADC converts feedback at kilohertz-to-megahertz rates, and the core's 40 MIPS throughput supports compensator math per switching cycle. GP-series PWM outputs interface to gate drivers through optocouplers or driver ICs, and the 128KB Flash accommodates telemetry, PMBus-style communication, and fault logging alongside the control loop. The part's 3.3V industrial temperature rating suits brick and server power environments. Trade-off: peak PWM resolution is lower than the GS-series dedicated high-speed PWM hardware, so designs pushing beyond roughly 1 MHz switching should evaluate the GS family instead.
Recommended
Sensor Signal Conditioning
The GP-series DSC is well suited to conditioning signals from pressure, load-cell, and industrial sensors: its ADC digitizes bridge or transducer outputs, and the DSP engine applies FIR/IIR filters and calibration math at up to 40 MIPS, offloading the host. The 128KB Flash stores multi-point compensation tables, and UART/SPI/I2C links stream processed values to PLCs or HMIs. Using ICSP through the PGECx/PGEDx pins, calibration constants can be reprogrammed in-circuit on the production line. The -40C to +85C grade covers unconditioned industrial cabinets. Compared with an analog front-end plus simple MCU, this single-chip approach reduces BOM count and noise pickup between stages.
Recommended
Embedded Control & Automation
For general industrial automation nodes, the DSPIC33FJ128GP706T-I/PT provides deterministic 16-bit control with enough math headroom for harmonic analysis, sequencing, and communications. Its rich GPIO in the 64-TQFP (10x10 mm) footprint interfaces relays, optocouplers, and HMI buttons, while dual UART/SPI/I2C buses handle Modbus-style links and local peripherals. The 128KB Flash supports protocol stacks plus a boot loader for field firmware updates via ICSP. The Explorer 16/32 Development Board with a dsPIC PIM shortens prototyping, per Microchip's documented toolchain. The tape-and-reel T packaging suits high-volume SMT assembly in control-board manufacturing.
Recommended
Audio & Speech Processing
The dsPIC33F core's DSP instruction set (MAC, dual fetch) makes the DSPIC33FJ128GP706T-I/PT practical for speech-band processing: echo cancellation, active noise control, and simple audio effect pipelines fit within 40 MIPS and 128KB Flash. On-chip ADC input captures microphone signals and output-compare/PWM or external codec interfaces reconstruct audio. For lower-BOM designs, running a codec over SPI or I2C keeps analog external to the noisy digital domain. Note the GP-series lacks a dedicated audio codec and high-resolution audio PWM; for premium audio paths, pair with an external codec or evaluate dsPIC33F GS/Audio variants with specialized peripherals.
Recommended
Lighting & Ballast Control
Electronic ballasts and LED drivers benefit from the DSPIC33FJ128GP706T-I/PT's blend of PWM generation and fast math: the DSC modulates lamp or LED current with output-compare/PWM peripherals while computing power-factor-correction and harmonic compensation in the 40 MIPS core. The ADC monitors current and bus voltage for protection thresholds implemented in firmware, and Flash reserves hold dimming curves and communication for DALI-style interfaces. The -40C to +85C industrial grade suits luminaires and outdoor drivers. For very high switching frequencies or phase-dimmable topologies needing fine PWM resolution, the GS-series DSPIC33FJ64GS606-I/PT is the natural upgrade within the same footprint class.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33FJ128GP706T-I/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33FJ128GP706A-E/PT | DSPIC33FJ128GP206AT-I/PT | DSPIC33FJ128GP310T-I/PT | DSPIC33FJ64GS606-I/PT | PIC24FJ128GA006T-I/PT |
|---|---|---|---|---|---|---|
| Package | 64-TQFP (10x10 mm) | 64-TQFP (10x10 mm) - same | 64-TQFP (10x10 mm) - same | 64-TQFP (10x10 mm) - same | 64-TQFP (10x10 mm) - same | 64-TQFP (10x10 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core / Architecture | 16-bit dsPIC33F DSC | 16-bit dsPIC33F DSC | 16-bit dsPIC33F DSC | 16-bit dsPIC33F DSC | 16-bit dsPIC33F DSC (GS) | 16-bit PIC24F MCU |
| Flash Memory | 128KB | 128KB | 128KB | 128KB | 64KB | 128KB |
| Operating Temperature | -40C to +85C | -40C to +125C (E grade) | -40C to +85C (I grade) | -40C to +85C (I grade) | -40C to +85C (I grade) | -40C to +85C (I grade) |
| Peripheral Emphasis | GP: general-purpose control set | GP set, A-revision silicon | GP set (A-revision) | GP310 peripheral variant | GS: high-speed PWM, ADC, comparators | General-purpose MCU peripherals |
| Programming / Debug | ICSP via PGECx/PGEDx | ICSP via PGECx/PGEDx | ICSP via PGECx/PGEDx | ICSP via PGECx/PGEDx | ICSP via PGECx/PGEDx | ICSP (PIC24 interface) |
Key Differentiators
- Full 128KB Flash at 40 MIPS in 64-pin footprint (vs DSPIC33FJ64GS606-I/PT)
- Extended temperature option in same footprint (vs DSPIC33FJ128GP706A-E/PT)
- DSP-class math engine, not plain MCU (vs PIC24FJ128GA006T-I/PT)
Design Notes
Decouple every VDD/VSS pair of the 64-TQFP with a 100nF ceramic placed within 2-3 mm of the pin, plus one bulk 4.7-10uF per supply domain. At 40 MIPS, transient core current is fast and localized; a single shared bulk cap is a common cause of sporadic resets and ADC noise. Keep the ICSP connector (PGECx/PGEDx, MCLR) routed to a header on production boards - retrofitting debug access later is painful and often forces board respins.
Always download and read the Silicon Errata for your exact device revision before committing hardware; early dsPIC33F revisions documented peripheral-level errata that only the A-revision (e.g., DSPIC33FJ128GP706A-E/PT) resolves. Also, when substituting within the dsPIC33F family (GP to GS or PIC24F), the peripheral maps and pin-multiplexing tables differ - firmware that compiles may still address nonexistent peripherals. Re-verify the pin table and peripheral register set after any family swap.
Estimated: the 64-TQFP (10x10 mm) theta-JA on a standard 4-layer JEDEC board is typically in the tens of C/W range. With core current in the tens of milliamps at 3.3V, internal dissipation is on the order of 100-200 mW, giving junction rise well under 10C above ambient - thermal design is rarely limiting unless the part drives heavy external loads from its own supply pins. Confirm exact theta-JA in the datasheet package section for your stack-up.
Compliance Information
RoHS compliance and lead-free finish per DigiKey/Mouser listings. REACH, halogen-free and conflict minerals declarations must be obtained from the Microchip quality documentation portal.
