DSPIC33FJ64MC706AT-I/MR - 16-bit 40 MIPS DSC 64KB | Microchip
MPN: DSPIC33FJ64MC706AT-I/MR ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.9 | $6.90 |
| 10 | $6.21 | $62.10 |
| 100 | $5.52 | $552.00 |
| 500 | $4.97 | $2,485.00 |
| 1,000 | $4.45 | $4,450.00 |
DSPIC33FJ64MC706AT-I/MR Overview
A digital signal controller combines the deterministic control of a microcontroller with the mathematical throughput of a DSP. In the embedded hierarchy, the dsPIC33F sits between general-purpose MCUs (such as the PIC18 family) and dedicated DSPs, making it a power management IC-class solution for real-time closed-loop systems that need both fast multiply-accumulate operations and rich peripherals.
Key features include 40 MIPS maximum core speed, 64KB self-programming Flash, 53 general-purpose I/O pins, and communication peripherals including ECAN, I2C, SPI, and UART as listed by distributor Newark. The device supports industrial temperature operation (-40C to +85C, denoted by the I suffix) and ships in tape-and-reel packaging (T/R) for automated assembly.
Architecturally, the dsPIC33F core pairs a 16-bit modified Harvard CPU with DSP engine instructions, enabling single-cycle MAC operations used in field-oriented motor control, digital power conversion, and filtering. The A-version family devices are Microchip's refreshed silicon of the dsPIC33FJ64MC706 line.
Typical applications include brushless DC motor control, single- and 3-phase induction motor drives, and switched reluctance motor systems, as stated by Microchip on the dsPIC33FJ64MC706A product page, plus digital power supplies and industrial sensing nodes.
Design consideration: the 64-VQFN exposed-pad package requires a well-designed ground via array under the thermal pad to achieve reliable solder joints and low-impedance grounding at 40 MIPS switching activity.
This page synthesizes distributor pricing, drop-in family alternatives, design notes, and application guidance not consolidated in the manufacturer datasheet.
Drop-in alternatives for DSPIC33FJ64MC706AT-I/MR — 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 DSPIC33FJ64MC706AT-I/MR (same form factor and footprint) — differing in Core Architecture, Package, Supply Voltage.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33FJ64MC706A-I/MR
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33FJ64MC806AT-I/MR
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33FJ32MC706AT-I/MR
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33FJ128MC706AT-I/MR
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$5.4 / Unit
View Datasheet →DSPIC33FJ64MC706AT-I/PT
✅ Drop-In✓ In Stock
$5.85 / Unit
View Datasheet →DSPIC33FJ64MC706AT-I/MR Maximum Ratings & Electrical Characteristics
| Core Architecture | 16-bit dsPIC33F RISC DSC |
| Maximum CPU Speed | 40 MIPS |
| Program Memory Size | 64KB (64K x 8) Flash |
| Supply Voltage | 3V to 3.6V |
| Package | 64-VQFN (9x9 mm) Exposed Pad |
| Number of I/Os | 53 |
| Communication Peripherals | ECAN, I2C, SPI, UART |
| Operating Temperature | -40C to +85C (I grade) |
| Mounting Type | Surface Mount |
| Packaging | Tape and Reel (T/R) |
| Product Family | dsPIC33FJ64MC706A |
| Core Type | dsPIC 33F MCU/DSP hybrid |
| Pin Count | 64 |
| RoHS Status | ROHS3 Compliant |
| Target Applications | Motor control, digital power |
| Typical Supply Frequency | 40 MHz |
DSPIC33FJ64MC706AT-I/MR 64-vqfn (9x9 mm) exposed pad Pin Configuration Guide
Pin configuration for DSPIC33FJ64MC706AT-I/MR (64-vqfn (9x9 mm) exposed pad 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 DSPIC33FJ64MC706AT-I/MR.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33FJ64MC706AT-I/MR is suitable for 6 applications: Brushless DC Motor Control, Digital Power Supplies (SMPS/LLC), Industrial Automation and Sensing Nodes, Uninterruptible Power Supplies (UPS), Automotive and e-Mobility Auxiliary Systems, Embedded Audio and Signal Processing.
Brushless DC Motor Control
The DSPIC33FJ64MC706AT-I/MR fits BLDC motor control because its 40 MIPS core with DSP multiply-accumulate instructions executes field-oriented control current loops at the 10-20 kHz rates demanded by modern drives. According to Microchip, the dsPIC33FJ64MC706A family explicitly supports brushless DC, induction, and switched reluctance motor applications. In a typical three-phase inverter, the DSC generates complementary PWM with dead-time, samples phase currents via its ADC, and closes the control loop in software while ECAN or UART handles host communication. The 3.3V I/O interfaces directly with gate-driver logic, and 53 I/O pins leave headroom for encoders, protection inputs, and status LEDs on a single 64-VQFN device.
Recommended
Digital Power Supplies (SMPS/LLC)
Digital power conversion benefits from the DSPIC33FJ64MC706AT-I/MR's 40 MIPS throughput, which supports sub-microsecond control-loop interrupts for voltage-mode or current-mode regulation of LLC, buck, and PFC stages. The DSC replaces analog compensation networks with firmware, enabling adaptive tuning, soft-start sequencing, and fault logging that analog controllers cannot offer. Its high-resolution PWM generation and fast ADC sampling close the loop around the switching period, while ECAN allows digital telemetry to a system controller. The 64-VQFN exposed-pad package provides low-impedance grounding that helps contain switching noise near the controller, improving signal integrity for the ADC front end in compact power-supply designs operating from a regulated 3.3V rail.
Recommended
Industrial Automation and Sensing Nodes
In factory automation, the DSPIC33FJ64MC706AT-I/MR serves as an intelligent sensor or actuator node: its ECAN peripheral connects to industrial CAN buses, SPI and I2C interface to ADCs, EEPROMs, and displays, and UART links to legacy equipment. The industrial -40C to +85C temperature grade covers unconditioned cabinet environments. The 40 MIPS DSP engine runs local filtering and FFT analysis, offloading the host PLC, while 53 I/O pins drive relays, read limit switches, and handle quadrature encoder feedback. Its 3V to 3.6V operation integrates with standard industrial 3.3V logic rails, and the 64-VQFN (9x9) footprint keeps the controller compact on dense I/O or gate-driver boards where board area is constrained.
Recommended
Uninterruptible Power Supplies (UPS)
UPS systems require simultaneous, phase-accurate control of an AC output inverter, a battery charger, and a transfer switch - a workload matched to the DSPIC33FJ64MC706AT-I/MR's 40 MIPS DSC core. The controller generates synchronized PWM for the inverter bridge, monitors battery voltage and current through the ADC, and executes anti-islanding and fault-ride-through firmware, all within a single device. DSP instructions handle RMS computation and harmonic analysis at line frequency, and ECAN or UART communicates status to building management systems. Because firmware defines the control law, the same 64-VQFN hardware supports 50 Hz and 60 Hz products and multiple power ratings, reducing the number of controller variants a UPS manufacturer must qualify and stock.
Recommended
Automotive and e-Mobility Auxiliary Systems
While the DSPIC33FJ64MC706AT-I/MR itself is an industrial-grade part, the dsPIC33F MC architecture it belongs to is widely used in off-road, agricultural, and light e-mobility auxiliary systems such as pump controllers, cooling fan drives, and actuator modules that do not require AEC-Q100 qualification. The 40 MIPS core runs sensorless BLDC algorithms using back-EMF observers computed with DSP MAC instructions; ECAN provides the vehicle-network interface, and the -40C cold-start rating covers outdoor equipment. Its 3V to 3.6V rail matches standard gate-driver and transceiver logic levels. Designers needing certified automotive parts should evaluate Microchip's qualified variants, but for industrial vehicles this 64-VQFN DSC offers proven motor-control capability at consumer-industrial cost.
Recommended
Embedded Audio and Signal Processing
The DSP engine of the DSPIC33FJ64MC706AT-I/MR - single-cycle MAC, modulo addressing, and bit-reversal - supports moderate-rate audio processing such as active noise cancellation, tone generation, acoustic alarms, and industrial sound-analysis front ends. At 40 MIPS, the DSC sustains filtering and detection algorithms for narrowband audio while UART, SPI, and I2C connect to audio codecs, DACs, and memory. The 64KB Flash holds fixed-point filter coefficients and firmware together, simplifying single-chip designs. In distributed systems, ECAN streams detection events to a supervisory controller. Although it cannot replace dedicated audio DSPs for high-fidelity paths, the 64-VQFN (9x9) device is a strong fit where control and low-rate DSP must coexist on one low-cost 3.3V controller.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33FJ64MC706AT-I/MR — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33FJ64MC706A-I/MR | DSPIC33FJ64MC806AT-I/MR | DSPIC33FJ32MC706AT-I/MR | DSPIC33FJ64MC706AT-I/PT |
|---|---|---|---|---|---|
| Package | 64-VQFN (9x9) EP | 64-VQFN (9x9) EP - same | 64-VQFN (9x9) EP - same | 64-VQFN (9x9) EP - same | 64-TQFP - same silicon, different package |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| CPU Speed | 40 MIPS | 40 MIPS | 40 MIPS | 40 MIPS | 40 MIPS |
| Flash Memory | 64KB | 64KB | 128KB | 32KB | 64KB |
| Supply Voltage | 3V to 3.6V | 3V to 3.6V | 3V to 3.6V | 3V to 3.6V | 3V to 3.6V |
| I/O Count | 53 | 53 | 53 | 53 | 53 |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
| Peripherals | ECAN, I2C, SPI, UART | ECAN, I2C, SPI, UART | ECAN, I2C, SPI, UART | ECAN, I2C, SPI, UART | ECAN, I2C, SPI, UART |
| Packaging | Tape and Reel | Tray / cut tape | Tape and Reel | Tape and Reel | Tape and Reel |
Key Differentiators
- Tape-and-reel supply for automated assembly (vs DSPIC33FJ64MC706A-I/MR)
- Right-sized 64KB Flash (vs DSPIC33FJ64MC806AT-I/MR)
- Exposed-pad VQFN for low-inductance grounding (vs DSPIC33FJ64MC706AT-I/PT)
Design Notes
The 64-VQFN (9x9) exposed-pad package requires a solder land pattern for the center pad plus an array of 4-9 ground vias connecting it to the ground plane. Follow Microchip's QFN land-pattern application note: use an SMD or NSMD pad geometry per IPC-7351 guidance, and keep via diameters small (0.3 mm) so solder does not wick away during reflow. Skipping the exposed-pad connection causes floating ground returns and erratic ADC readings.
Supply the DSC from a clean 3.3V rail within the 3V to 3.6V window. Decouple each VDD pin with 0.1 uF ceramic capacitors placed within 2 mm of the pin, and add one bulk 10 uF capacitor near the device. At 40 MIPS, current transients on instruction fetch cause supply droop that manifests as flash-read errors if decoupling is inadequate. Follow the power-up timing requirements in the dsPIC33F family reference manual before enabling the debugger.
Route analog inputs (ADC channels used for motor phase-current sensing) away from PWM output traces and the ECAN bus. Use a Kelvin-grounded shunt or dedicated current-sense amplifier near the shunt resistor. Keep the crystal/oscillator traces short and guarded with ground. Because the DSC runs closed-loop control, poor ADC grounding directly translates into torque ripple in motor applications.
The MR (VQFN) and PT (TQFP) versions share silicon but not a land pattern - do not assume footprint interchangeability when qualifying alternates. Also confirm the I-grade temperature range (-40C to +85C) matches your environment; extended-temp variants use different suffixes. Configure configuration fuses (oscillator source, watchdog, PWM pins) deliberately in code, as defaults may not match your hardware.
Compliance Information
Distributor data (ics-embedded) lists ROHS3 Compliant. No AEC-Q100 qualification is indicated for this industrial-grade part; consult Microchip for automotive-qualified dsPIC33F variants.
