DSPIC33FJ128MC708-I/PT Microchip Integrated Circuit (Quad Flat Packages) In Stock
Microchip DSPIC33FJ128MC708-I/PT is a 16-bit digital signal controller with 128KB Flash, 64 MHz max clock, DSP engine with barrel shifter, and JTAG boundary scan in an 80-pin TQFP package. Designed for motor control and power conversion with multiple internal bus architecture. Available from stock with worldwide shipping.
- Manufacturer
- Microchip
- Package
- Quad Flat Packages
- Pin Count
- 80
- Lifecycle
- NOT RECOMMENDED
- Datasheet
- DSPIC33FJ128MC708-I/PT Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $7.2200(MOQ 1)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Integrated DSP engine with hardware barrel shifter and fixed-point multiply-accumulate enabling real-time motor control algorithms at 64 MHz without external DSP chips
- 128KB self-programmable Flash with JTAG boundary scan in 80-pin TQFP-80 package, supporting complex firmware and streamlined production test coverage
- Multiple internal bus architecture allowing simultaneous instruction fetch and data access for deterministic real-time control loop execution in motor drive and power conversion applications
Applications
DSPIC33FJ128MC708-I/PT is purpose-built for BLDC and PMSM motor control applications where real-time field-oriented control (FOC) algorithms require DSP-class multiply-accumulate performance at 64 MHz. Its extensive PWM and ADC peripheral set supports closed-loop current and speed regulation in servo drives, electric vehicle auxiliary motors, and industrial pump controllers. Power conversion systems such as PFC front ends, UPS inverters, and solar MPPT chargers also leverage its DSP core for fast control loop execution and harmonic analysis.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | TQFP-80 |
| Factory Lead Time | 6Weeks |
| YTEOL | 3 |
| Barrel Shifter | YES |
| Bit Size | 16 |
| Boundary Scan | YES |
| Clock Frequency-Max | 64MHz |
| Format | FIXED POINT |
| Internal Bus Architecture | MULTIPLE |
| JESD-30 Code | S-PQFP-G80 |
| JESD-609 Code | e3 |
| Low Power Mode | YES |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TQFP80,.55SQ |
| Package Shape | SQUARE |
| Package Style | FLATPACK, THIN PROFILE, FINE PITCH |
| Qualification Status | Not Qualified |
| ROM Programmability | FLASH |
| Screening Level | TS 16949 |
| Supply Voltage-Max | 3.6V |
| Supply Voltage-Min | 3V |
| Supply Voltage-Nom | 3.3V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.5mm |
| Terminal Position | QUAD |
| uPs/uCs/Peripheral ICs Type | DIGITAL SIGNAL PROCESSOR, CONTROLLER |
| Package | Quad Flat Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 3 |
| ECCN | 3A991.A.2 |
| HTS Code | 8542.31.00.01 |
| Country of Origin | Thailand |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How does DSPIC33FJ128MC708-I/PT's DSP engine accelerate field-oriented control (FOC) compared to a standard 16-bit MCU?
DSPIC33FJ128MC708-I/PT incorporates a hardware multiply-accumulate (MAC) unit and barrel shifter that execute DSP operations in a single instruction cycle at 64 MHz, completing a Park/Clarke transform in under 1 µs. A standard 16-bit MCU without a DSP core requires 5 to 15 software-emulated multiply steps for the same operation, consuming 5 to 20 µs and leaving less CPU headroom for communications and monitoring. This throughput advantage allows FOC current-loop update rates of 20 kHz or higher, enabling smoother torque control and faster dynamic response in servo motor drives.
For a 3-phase motor controller, how many PWM channels does DSPIC33FJ128MC708-I/PT provide and what complementary dead-time control is available?
DSPIC33FJ128MC708-I/PT provides multiple motor control PWM (MCPWM) channels including 3 complementary output pairs suitable for 3-phase inverter gate driving, with independently programmable dead-time insertion between high-side and low-side gate signals. Dead-time resolution can be set in nanosecond increments at 64 MHz to prevent shoot-through in IGBT or MOSFET bridges, and each channel includes fault trip override for hardware over-current protection, reducing software response latency from tens of microseconds to under 100 ns.
When would an engineer select DSPIC33FJ128MC708-I/PT over a general-purpose PIC24 MCU for a solar MPPT charger design?
A solar MPPT charger requires rapid recalculation of the optimal operating point using perturb-and-observe or incremental conductance algorithms that involve repeated floating-point or fixed-point multiply-divide operations on ADC voltage and current samples. DSPIC33FJ128MC708-I/PT executes these as single-cycle MAC operations at 64 MHz, compressing the MPPT recalculation loop to under 10 µs, compared to 50 µs or more on a PIC24 without DSP hardware. The 80-pin TQFP-80 also provides enough I/O for CAN communication, display interface, and multi-channel ADC sampling without external expanders.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $9.9300 | $9.93 |
| 6+ | $8.1225 | $48.73 |
| 40+ | $8.0700 | $322.80 |
| 75+ | $7.9700 | $597.75 |
| 1000+ | $7.5800 | $7580.00 |
| 5000+ | $7.2200 | $36100.00 |
In Stock · 24h Response · Worldwide Shipping
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