DSPIC33FJ128GP706A-E/PT - 16-bit DSC 40 MIPS 128KB Flash | Microchip
MPN: DSPIC33FJ128GP706A-E/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $8.55 | $8.55 |
| 10 | $7.79 | $77.90 |
| 100 | $6.94 | $694.00 |
| 500 | $6.42 | $3,210.00 |
| 1,000 | $5.9 | $5,900.00 |
DSPIC33FJ128GP706A-E/PT Overview
A digital signal controller combines the computing architecture of a microcontroller with the mathematical acceleration of a digital signal processor. In the power-management hierarchy of embedded systems, a DSC sits between a general-purpose MCU and a standalone DSP: it runs deterministic C code, manages peripherals, and executes DSP-class multiply-accumulate instructions (up to two per cycle) within the same chip, making it a natural fit for closed-loop control of power and motor systems.
Key features include the 16-bit modified Harvard dsPIC core running up to 40 MIPS from a 3.0V to 3.6V supply, hardware DSP engine with 40-bit accumulators, an advanced analog front end with a high-speed 12-bit ADC capable of simultaneous multi-channel sampling, multiple UART, SPI, and I2C communication ports, PWM outputs suitable for motor and power conversion, and ICSP programming/debugging through PGECx/PGEDx pin pairs.
Technically, the A-version of the dsPIC33FJ128GP706 is a process and performance enhancement of the original die, operating from DC to 40 MIPS across the full industrial-plus temperature range. Peripheral Trigger Generator (PTG) and DMA-class data movement options in the family reduce CPU overhead in real-time sampling loops. The 64-TQFP exposes ample general-purpose I/O, multiple external interrupt sources, and parallel master port functions for external memory or displays.
Typical applications include digital power supplies and PFC stages, BLDC/PMSM and AC-induction motor control, solar inverters, uninterruptible power supplies, and sensor signal processing in industrial automation.
Design consideration: decouple all VDD/VSS pairs individually and pair each PGECx with its matching PGEDx when connecting ICSP - mixing pairs breaks programming.
This page adds value beyond the datasheet by synthesizing distributor stock signals, drop-in family alternatives, pricing tiers, and practical layout notes in one citable reference.
Drop-in alternatives for DSPIC33FJ128GP706A-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 DSPIC33FJ128GP706A-E/PT (same form factor and footprint) — differing in Package, Core Architecture, Operating Temperature, Programming Interface, Supply Voltage.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33FJ256GP706A-E/PT
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33FJ64GP706A-E/PT
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33FJ128MC706A-E/PT
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33FJ128GP706A-I/PT
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$7.86 / Unit
View Datasheet →DSPIC33FJ128GP706A-E/MR
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$4.2 / Unit
View Datasheet →DSPIC33FJ128GP706A-E/PT Maximum Ratings & Electrical Characteristics
| Core Architecture | 16-bit dsPIC DSC |
| Maximum Instruction Speed | 40 MIPS |
| Maximum Clock Frequency | 40 MHz |
| Program Memory (Flash) | 128 KB |
| SRAM | 16 KB |
| Supply Voltage Range | 3.0 V to 3.6 V |
| Nominal Supply Voltage | 3.3 V |
| Operating Temperature | -40C to +125C |
| Package | 64-TQFP (10x10 mm) |
| Mounting Type | Surface Mount |
| Technology | CMOS |
| ADC Resolution | 12-bit |
| Communication Interfaces | UART, SPI, I2C |
| PWM Outputs | Yes (motor control / power conversion) |
| Programming Interface | ICSP via PGECx/PGEDx pairs |
| DSP Engine | Hardware MAC, 40-bit accumulators |
| RoHS Status | Compliant |
DSPIC33FJ128GP706A-E/PT 64-tqfp (10x10 mm) Pin Configuration Guide
Pin configuration for DSPIC33FJ128GP706A-E/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 DSPIC33FJ128GP706A-E/PT.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33FJ128GP706A-E/PT is suitable for 6 applications: Digital Power Supplies and PFC, BLDC and PMSM Motor Control, Industrial Automation and PLC I/O, Solar Inverters and Energy Conversion, Sensor Signal Processing and Data Acquisition, Uninterruptible Power Supplies (UPS).
Digital Power Supplies and PFC
The DSPIC33FJ128GP706A-E/PT fits digital switch-mode power supplies and PFC stages because its 40 MIPS core closes voltage and current loops with cycle-by-cycle control, while the 12-bit ADC samples multiple rails with fast, trigger-synchronized conversions. The hardware DSP engine executes PI and PID compensation with single-cycle MAC instructions, keeping loop latencies deterministic. In a typical topology, the DSC reads output voltage, input current, and temperature, computes the duty update, and drives PWM outputs into a gate driver. Placing the controller between a 3.3V rail and MOSFET drivers eliminates analog compensator tuning: gains are firmware constants. The trade-off versus pure analog control is firmware complexity, offset by the ability to implement soft-start, fault logging, and PMBus-style communication on the same silicon. The -40C to +125C range covers outdoor and industrial power environments.
Recommended
BLDC and PMSM Motor Control
Sensorless and sensored FOC for brushless DC and permanent-magnet synchronous motors is a natural fit for this DSC: the 40 MIPS core, hardware MAC, and fast 12-bit ADC together execute current-loop sampling at PWM frequency, while PWM outputs drive a three-phase inverter. Hall or encoder inputs connect to change-notice and external-interrupt pins; the GP-series ADC synchronized to PWM triggers minimizes phase-current sampling jitter. In a typical drive, the controller computes Clarke and Park transforms per cycle - heavy multiply work the DSP engine accelerates - and outputs six PWM signals with firmware-supplied dead time. Compared with the MC-series sibling DSPIC33FJ128MC706A, the GP part suits designs that mix motor control with general-purpose analog I/O; pin compatibility means you can move to the MC variant without a PCB respin if you later need hardware-complementary PWM.
Recommended
Industrial Automation and PLC I/O
In industrial automation nodes, the DSPIC33FJ128GP706A-E/PT serves as a smart sensor or actuator controller: multiple UART, SPI, and I2C ports link RS-485 transceivers, isolated communication modules, and local displays, while the 12-bit ADC conditions 4-20 mA or 0-10 V signals through external front ends. The -40C to +125C operating range suits cabinet-mounted and machine-mounted electronics exposed to thermal cycling, and 128 KB Flash accommodates protocol stacks plus application firmware with room for a field-upgradeable bootloader. The DSC's deterministic interrupt structure lets it service a fast control loop while maintaining Modbus or proprietary communication. Its 64-pin TQFP exposes sufficient I/O for limit switches, relays, and status LEDs without port expanders. For designs needing CAN, the pin-compatible dsPIC33EV family within Microchip's 16-bit ecosystem is the migration path.
Recommended
Solar Inverters and Energy Conversion
Grid-tied micro-inverters, solar charge controllers, and battery-converter stages benefit from this DSC's combination of 40 MIPS throughput, multi-channel 12-bit ADC, and flexible PWM. MPPT algorithms run at low rates in firmware while fast inner current loops execute every PWM cycle using DSP MAC instructions, and the ADC's simultaneous sampling of input voltage, current, and grid feedback keeps phase alignment tight. The -40C to +125C E-grade matches rooftop and outdoor enclosure thermal profiles where ambient plus solar gain pushes electronics well beyond 85C. On the design side, galvanic isolation is handled by external optocouplers and isolated drivers; the DSC concentrates all measurement and modulation logic on one 3.3V chip, cutting BOM count. Its 128 KB Flash leaves headroom for safety-critical firmware plus a bootloader for field updates across a product fleet.
Recommended
Sensor Signal Processing and Data Acquisition
The GP-series analog integration makes this DSC effective for front-end signal processing: the 12-bit ADC with fast, sequenced conversions digitizes multiple sensor channels, and the DSP engine applies filtering (FIR/IIR) with single-cycle multiply-accumulate, offloading math that would otherwise saturate a conventional MCU at 40 MIPS. Typical uses include vibration monitoring, weight-scale front ends, ultrasonic processing, and industrial conditioning of thermistor or bridge sensors with excitation from PWM-derived references. Multiple UART and SPI ports stream processed results to host systems or loggers, while ICSP via any matched PGECx/PGEDx pair enables in-field calibration updates. The 3.0V to 3.6V single-rail operation simplifies powering from industrial 3.3V logic domains. Choose this part when a design needs DSP-class math and general-purpose control in one 64-pin, -40C to +125C device without moving to a separate DSP.
Recommended
Uninterruptible Power Supplies (UPS)
Line-interactive and double-conversion UPS designs use the DSPIC33FJ128GP706A-E/PT to regulate inverter output, manage battery charging, and supervise transfer logic on a single chip. The 40 MIPS core runs nested control loops: a fast inner loop for inverter voltage regulation using the DSP engine's MAC throughput, and slower loops for battery charge staging and input-line monitoring via the 12-bit ADC. PWM outputs drive the inverter bridge through external gate drivers, while multiple UARTs provide service ports and display links. The -40C to +125C rating tolerates battery-compartment heat and enclosed-rack environments, and 128 KB Flash holds the control firmware, fault tables, and a bootloader for fleet firmware maintenance. Designers should budget ADC synchronization carefully so phase-current sampling aligns with PWM boundaries, minimizing ripple-induced measurement error in the current loops.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33FJ128GP706A-E/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33FJ256GP706A-E/PT | DSPIC33FJ64GP706A-E/PT | DSPIC33FJ128MC706A-E/PT | DSPIC33FJ128GP706A-I/PT |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 64-TQFP (10x10) | 64-TQFP (10x10) - same | 64-TQFP (10x10) - same | 64-TQFP (10x10) - same | 64-TQFP (10x10) - same |
| Program Memory (Flash) | 128 KB | 256 KB | 64 KB | 128 KB | 128 KB |
| Maximum Speed | 40 MIPS | 40 MIPS | 40 MIPS | 40 MIPS | 40 MIPS |
| Operating Temperature | -40C to +125C (E grade) | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +85C |
| PWM Specialization | GP-series standard PWM | GP-series standard PWM | GP-series standard PWM | MC-series motor-control PWM (dead time, fault inputs) | GP-series standard PWM |
| Relative Unit Cost | Baseline (1x) | Higher (~1.3-1.6x) - larger Flash | Lower (~0.8x) - smaller Flash | Comparable (~1x) | Lower (~0.85x) - reduced temp grade |
| ADC | 12-bit high-speed | 12-bit high-speed | 12-bit high-speed | 12-bit (MC analog mix) | 12-bit high-speed |
| 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 | 3.0 V to 3.6 V |
Key Differentiators
- Extended -40C to +125C operation at full 40 MIPS (vs DSPIC33FJ128GP706A-I/PT)
- Twice the Flash headroom in the same footprint (vs DSPIC33FJ64GP706A-E/PT)
- General-purpose analog mix with DSP engine (vs DSPIC33FJ128MC706A-E/PT)
- Balanced 128 KB memory point of the family (vs DSPIC33FJ256GP706A-E/PT)
Design Notes
Provide a dedicated VDD/VSS pair decoupling on every supply pin pair: place a 100 nF ceramic capacitor within 2 mm of each pair, plus bulk 10 uF near the device. All VSS and VDD pins must be connected during ICSP programming per Microchip's documentation for the dsPIC33FJ128GP706A family. The 64-TQFP thermal pad-free footprint needs a solid ground plane on layer 2 to return ADC and switching currents cleanly.
ICSP wiring error is the most frequent bring-up failure: the dsPIC33FJ128GP706A has more than one PGECx/PGEDx pair, and you must use pins from the same pair (e.g., PGEC2 with PGED2 for ICSPCLK/ICSPDAT). Mixing pins from different pairs prevents both programming and debugging. Also connect MCLR through a ~10 kohm pull-up to VDD and reserve it for the programmer; do not repurpose it as a general I/O if field programming is required.
Estimated: at 40 MIPS the dsPIC33FJ core current is on the order of tens of milliamps from 3.3V, so supply dissipation is small (<0.2 W), but adjacent gate drivers and ADC reference noise dominate design. Provide an independent low-noise 3.3V rail or ferrite-isolated AVDD feed for the ADC, and route PWM return currents away from analog ground returns. Verify actual current draw against the manufacturer datasheet electrical characteristics tables for your operating frequency and temperature.
For motor or power applications, keep PWM output traces short and matched in length to the gate drivers, and sample ADC phase currents synchronized to PWM center using the ADC trigger - this avoids sampling during switching transitions and halves measurement ripple error. Add RC filters on analog inputs sized to the ADC acquisition window; the datasheet specifies minimum acquisition time that must be respected for full 12-bit accuracy.
Compliance Information
RoHS compliance explicitly stated in Master Electronics listing. REACH, halogen-free, and conflict-minerals status must be confirmed from Microchip official compliance certificates.
