DSPIC33FJ128MC708T-I/PT - 16-Bit 40MIPS 128KB Flash DSC | Microchip
Teilenummer: DSPIC33FJ128MC708T-I/PT ✓ Aktiv| Menge | Stückpreis | Gesamt |
|---|---|---|
| 1 | $9.85 | $9,85 |
| 10 | $9.1 | $91,00 |
| 100 | $8.2 | $820,00 |
| 500 | $7.45 | $3.725,00 |
| 1.000 | $6.75 | $6.750,00 |
DSPIC33FJ128MC708T-I/PT Übersicht
A Digital Signal Controller (DSC) is a hybrid MCU/DSP architecture that retains the deterministic interrupt response and peripheral set of a microcontroller while adding a hardware multiply-accumulate (MAC) engine and DSP-oriented instruction set. Within Microchip's portfolio, the dsPIC33F sits above PIC16/PIC18 general-purpose MCUs and below PIC32 MIPS-based microcontrollers, and is part of the broader power management / motor-control hierarchy that includes gate drivers, MOSFETs, and position sensors.
Key features include 16 KB SRAM, an 8-channel hardware Motor Control PWM (Motor PWM) module with complementary outputs and programmable dead time, a 16-channel 10-bit ADC with 4 sample-and-hold units, two UART, two SPI, one I2C, one CAN, and a 16-bit timer/counter. The I-grade industrial temperature range of -40C to +85C, 3.0 V to 3.6 V single-supply operation, and ICSP/in-circuit debug support make it suitable for harsh embedded environments.
Architecturally, the dsPIC33F core uses a modified Harvard architecture with a 16-bit data path and 24-bit instruction words, enabling single-cycle 16x16 MAC operations. The integrated DSP engine accelerates transforms, PID loops, and field-oriented control (FOC) algorithms at 40 MIPS, which is sufficient for sub-microsecond current-loop updates in BLDC/PMSM drives.
Typical applications include sensorless and sensored BLDC motor drives, PMSM field-oriented control, industrial inverters, ACIM variable-frequency drives, and digital power conversion. Pairing the DSC with a gate driver such as the MCP8025 or three-phase MOSFET bridges (e.g., NCPFamily 600V parts) builds a complete motor-control node.
When designing with this part, allocate PCB area for the 12x12 mm TQFP and route the analog VDD/VSS pair separately from the digital supply to preserve ADC accuracy. Plan the PWM-ADC synchronization carefully: the ADC must sample within the PWM cycle to avoid aliasing of current-sense signals.
This page synthesizes distributor pricing, drop-in dsPIC33F alternatives, and practical motor-control design notes not consolidated in the manufacturer datasheet.
Drop-in-Alternativen für DSPIC33FJ128MC708T-I/PT – gleiches Gehäuse, Pin-kompatibel. Bauteile mit anderem Gehäuse, die eine PCB-Überarbeitung erfordern, sind ausgeschlossen.
Varianten dieser Serie
Modelle derselben Serie, die drop-in-kompatibel sind mit DSPIC33FJ128MC708T-I/PT (gleiche Bauform und Footprint) – abweichend in Operating Temperature, Package, ADC, CPU Speed, Core Architecture.
Schnellvergleichstool – Wählen Sie Alternativbauteile für den Direktvergleich:
DSPIC33FJ128MC708A-I/PT
✅ Drop-In ⚠️ Spezifikationen ungeprüft📋 Referenzalternative (nicht im Katalog)
DSPIC33FJ128MC708AT-I/PT
✅ Drop-In✓ Auf Lager
$4.8 / Stück
Datenblatt ansehen →DSPIC33FJ128MC706AT-I/PT
✅ Drop-In✓ Auf Lager
$8.15 / Stück
Datenblatt ansehen →DSPIC33FJ128MC706A-I/PT
✅ Drop-In✓ Auf Lager
$5.2 / Stück
Datenblatt ansehen →DSPIC33FJ128MC510A-I/PT
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
DSPIC33FJ128GP710AT-I/PT
✅ Drop-In ⚠️ Spezifikationen ungeprüft✓ Auf Lager
$6.05 / Stück
Datenblatt ansehen →DSPIC33FJ128MC708T-I/PT Grenzwerte & elektrische Eigenschaften
| Core | dsPIC33F (16-bit DSC) |
| CPU Speed | 40 MIPS |
| Program Memory (Flash) | 128 KB (128K x 8) |
| RAM | 16 KB |
| Versorgungsspannung | 3.0 V to 3.6 V |
| Betriebstemperatur | -40C to +85C (Industrial) |
| I/O Pins | 21 (general-purpose) |
| Motor Control PWM | 8 channels with complementary outputs and programmable dead time |
| ADC | 10-bit, up to 16 channels, 4 S&H |
| UART | 2 |
| SPI | 2 |
| I2C | 1 |
| CAN | 1 |
| Timers | 16-bit timer/counter modules |
| Gehäuse | 80-pin TQFP (PT), 12x12 mm |
| Montageart | Surface Mount |
| Debug Interface | ICSP / ICD |
| RoHS-Status | Compliant |
DSPIC33FJ128MC708T-I/PT Pin-Konfiguration
| Pin 1 | VSS — Digital ground |
| Pin 2 | RP0/PWM1H — Remappable I/O / Motor PWM channel 1 high |
| Pin 3 | RP1/PWM1L — Remappable I/O / Motor PWM channel 1 low |
| Pin 4 | RP2/PWM2H — Remappable I/O / Motor PWM channel 2 high |
| Pin 5 | RP3/PWM2L — Remappable I/O / Motor PWM channel 2 low |
| Pin 6 | RP4/PWM3H — Remappable I/O / Motor PWM channel 3 high |
| Pin 7 | RP5/PWM3L — Remappable I/O / Motor PWM channel 3 low |
| Pin 8 | VSS — Digital ground |
| Pin 9 | RP6/PWM4H — Remappable I/O / Motor PWM channel 4 high |
| Pin 10 | RP7/PWM4L — Remappable I/O / Motor PWM channel 4 low |
| Pin 11 | RP8 — Remappable I/O |
| Pin 12 | RP9 — Remappable I/O |
| Pin 13 | RP10 — Remappable I/O |
| Pin 14 | RP11 — Remappable I/O |
| Pin 15 | VSS — Digital ground |
| Pin 16 | RP12 — Remappable I/O |
| Pin 17 | RP13 — Remappable I/O |
| Pin 18 | RP14 — Remappable I/O |
| Pin 19 | RP15 — Remappable I/O |
| Pin 20 | VDD — Digital supply 3.3V |
| Pin 21 | MCLR — Master clear (reset, active low) |
| Pin 22 | PGC — ICSP clock |
| Pin 23 | PGD — ICSP data |
| Pin 24 | VSS — Digital ground |
| Pin 25 | OSC1 — Crystal oscillator input |
| Pin 26 | OSC2 — Crystal oscillator output |
| Pin 27 | AN0/VREF+ — Analog input 0 / ADC Vref+ |
| Pin 28 | AN1/VREF- — Analog input 1 / ADC Vref- |
| Pin 29 | AN2 — Analog input 2 |
| Pin 30 | AN3 — Analog input 3 |
| Pin 31 | AN4 — Analog input 4 |
| Pin 32 | AN5 — Analog input 5 |
| Pin 33 | AVDD — Analog supply 3.3V |
| Pin 34 | AVSS — Analog ground |
| Pin 35 | AN6 — Analog input 6 |
| Pin 36 | AN7 — Analog input 7 |
| Pin 37 | AN8 — Analog input 8 |
| Pin 38 | AN9 — Analog input 9 |
| Pin 39 | AN10 — Analog input 10 |
| Pin 40 | AN11 — Analog input 11 |
| Pin 41 | AN12 — Analog input 12 |
| Pin 42 | AN13 — Analog input 13 |
| Pin 43 | AN14 — Analog input 14 |
| Pin 44 | AN15 — Analog input 15 |
| Pin 45 | VDD — Digital supply 3.3V |
| Pin 46 | VSS — Digital ground |
| Pin 47 | U1RX/RP16 — UART1 RX / remappable I/O |
| Pin 48 | U1TX/RP17 — UART1 TX / remappable I/O |
| Pin 49 | U2RX/RP18 — UART2 RX / remappable I/O |
| Pin 50 | U2TX/RP19 — UART2 TX / remappable I/O |
| Pin 51 | SDO1/RP20 — SPI1 data out / remappable I/O |
| Pin 52 | SDI1/RP21 — SPI1 data in / remappable I/O |
| Pin 53 | SCK1/RP22 — SPI1 clock / remappable I/O |
| Pin 54 | SS1/RP23 — SPI1 slave select / remappable I/O |
| Pin 55 | SDO2/RP24 — SPI2 data out / remappable I/O |
| Pin 56 | SDI2/RP25 — SPI2 data in / remappable I/O |
| Pin 57 | SCK2/RP26 — SPI2 clock / remappable I/O |
| Pin 58 | SS2/RP27 — SPI2 slave select / remappable I/O |
| Pin 59 | SDA1/RP28 — I2C1 data / remappable I/O |
| Pin 60 | SCL1/RP29 — I2C1 clock / remappable I/O |
| Pin 61 | C1RX/RP30 — CAN1 RX / remappable I/O |
| Pin 62 | C1TX/RP31 — CAN1 TX / remappable I/O |
| Pin 63 | T1CK/RP32 — Timer1 clock / remappable I/O |
| Pin 64 | T2CK/RP33 — Timer2 clock / remappable I/O |
| Pin 65 | T3CK/RP34 — Timer3 clock / remappable I/O |
| Pin 66 | T4CK/RP35 — Timer4 clock / remappable I/O |
| Pin 67 | T5CK/RP36 — Timer5 clock / remappable I/O |
| Pin 68 | IC1/RP37 — Input capture 1 / remappable I/O |
| Pin 69 | IC2/RP38 — Input capture 2 / remappable I/O |
| Pin 70 | OC1/RP39 — Output compare 1 / remappable I/O |
| Pin 71 | OC2/RP40 — Output compare 2 / remappable I/O |
| Pin 72 | VDD — Digital supply 3.3V |
| Pin 73 | VSS — Digital ground |
| Pin 74 | INT0/RP41 — External interrupt 0 / remappable I/O |
| Pin 75 | INT1/RP42 — External interrupt 1 / remappable I/O |
| Pin 76 | INT2/RP43 — External interrupt 2 / remappable I/O |
| Pin 77 | RTCC/RP44 — Real-time clock alarm / remappable I/O |
| Pin 78 | FLTA/RP45 — PWM fault input / remappable I/O |
| Pin 79 | NC — Not connected (per datasheet) |
| Pin 80 | NC — Not connected (per datasheet) |
Typische Anwendungen
DSPIC33FJ128MC708T-I/PT ist geeignet für 6 Anwendungs: Brushless DC (BLDC) Motor Drive, Permanent Magnet Synchronous Motor (PMSM) Field-Oriented Control, AC Induction Motor Variable-Frequency Drive, Switched Reluctance Motor (SRM) Control, Digital Power Conversion (PFC + LLC), Industrial Servo and Robotics Motion Control.
Brushless DC (BLDC) Motor Drive
The DSPIC33FJ128MC708T-I/PT is a strong fit for BLDC motor drives because of its 8-channel Motor Control PWM with complementary outputs and programmable dead time, plus a 10-bit ADC with 4 sample-and-hold units that can sample all three phase currents simultaneously. At 40 MIPS, the DSC executes Park/Clarke transforms, PID current loops, and back-EMF observer routines inside a single PWM period (typically 50 us at 20 kHz switching), leaving headroom for housekeeping and communication tasks. The on-chip CAN and UART peripherals support automotive-style drive networks, while the industrial -40C to +85C operating range handles under-hood and industrial cabinet environments.
Empfohlen
Permanent Magnet Synchronous Motor (PMSM) Field-Oriented Control
FOC algorithms on PMSMs require high-rate current-loop execution with synchronized ADC sampling, and the DSPIC33FJ128MC708T-I/PT delivers 40 MIPS plus dedicated Motor PWM with ADC-trigger alignment to make this tractable. The 16 KB of SRAM holds Park/Clarke state variables, observer buffers, and the speed/torque PI controllers without external memory. Designers pair this DSC with a digital resolver or Sin/Cos encoder for rotor position feedback; the device's QEI (Quadrature Encoder Interface) on timer inputs and CAN peripheral then close the position/speed loop into a host motion controller.
Empfohlen
AC Induction Motor Variable-Frequency Drive
Three-phase AC induction motor (ACIM) VFDs rely on scalar V/Hz or indirect FOC, both of which run comfortably on the DSPIC33FJ128MC708T-I/PT at 40 MIPS. The Motor Control PWM supports space-vector modulation with dead-time insertion, while the 16-channel ADC reads DC-bus voltage, phase currents, and temperature feedback. The 128 KB Flash holds VFD state machines, slip-compensation tables, and protection routines (overcurrent, brownout, overtemperature). Industrial HVAC compressors and pump drives are the dominant deployment.
Empfohlen
Switched Reluctance Motor (SRM) Control
Switched reluctance motors need precise commutation control on each phase and the DSPIC33FJ128MC708T-I/PT provides enough Motor PWM channels (8) and ADC triggers (4 S&H) to handle 4-phase or 6/8 SRM topologies. The 40 MIPS DSP engine runs instantaneous torque control and demagnetization energy-recovery routines, which require fast interrupt response times that the dsPIC33F architecture supports natively. SRM drives are common in high-reliability appliances, aerospace actuators, and traction applications.
Empfohlen
Digital Power Conversion (PFC + LLC)
The DSPIC33FJ128MC708T-I/PT is widely used in digital power-conversion reference designs for interleaved PFC, LLC, and phase-shifted full-bridge converters. Its 40 MIPS execution enables average-current-mode control loops at 100 kHz switching, while the dedicated ADC with 4 S&H reads input voltage, input current, output voltage, and output current with predictable latency. The PWM module supports the leading-edge and trailing-edge modulation patterns required for interleaved topologies. Microchip's application notes AN1078 and AN1166 cover these topologies directly on this device family.
Empfohlen
Industrial Servo and Robotics Motion Control
For multi-axis servo amplifiers and robotics motion-control nodes, the DSPIC33FJ128MC708T-I/PT handles one axis per device, executing the position/speed/current triple loop in firmware. The 16 KB RAM supports full state-feedback controllers, while the QEI peripheral interfaces directly with incremental encoders; the CAN peripheral backhauls motion data to a central controller. At -40C to +85C, the device suits factory-floor enclosures and robotic joint modules where reliability under thermal stress is essential.
Empfohlen
Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für DSPIC33FJ128MC708T-I/PT – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | DSPIC33FJ128MC708A-I/PT | DSPIC33FJ128MC708AT-I/PT | DSPIC33FJ128MC706AT-I/PT | DSPIC33FJ128MC706A-I/PT | DSPIC33FJ128MC510A-I/PT |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 80-pin TQFP (PT), 12x12 mm | 80-pin TQFP (PT), 12x12 mm | 80-pin TQFP (PT), 12x12 mm | 80-pin TQFP (PT), 12x12 mm | 80-pin TQFP (PT), 12x12 mm | 80-pin TQFP (PT), 12x12 mm |
| CPU Speed | 40 MIPS | 40 MIPS | 40 MIPS | 40 MIPS | 40 MIPS | 40 MIPS |
| Flash Memory | 128 KB | 128 KB | 128 KB | 128 KB | 128 KB | 128 KB |
| 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 | 3.0 V to 3.6 V |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
Wichtigste Unterscheidungsmerkmale
- Dedicated 8-channel Motor Control PWM with hardware dead-time insertion (vs. DSPIC33FJ128GP710AT-I/PT)
- Industry-standard dsPIC33F instruction set with single-cycle MAC (vs. DSPIC33FJ128MC706AT-I/PT)
- Robust 4-sample-and-hold ADC for simultaneous phase-current sampling (vs. DSPIC33FJ128MC510A-I/PT)
Designhinweise
Estimated: at 80 MHz oscillator (40 MIPS) with all peripherals enabled, the DSPIC33FJ128MC708T-I/PT draws up to ~50 mA from a 3.3 V supply under full PWM load. Decouple VDD/AVDD with a 10 uF bulk cap and 0.1 uF + 1 nF ceramic caps placed within 5 mm of each pin pair; keep analog AVDD/AVSS star-routed separately from digital VDD to avoid injecting PWM switching noise into the ADC reference. Add a ferrite bead between VDD and AVDD if a shared regulator is used.
The 80-pin TQFP (12x12 mm) without an exposed pad dissipates roughly 1.5 W maximum. Estimated: at 3.3 V, 50 mA, and full peripheral activity, total package dissipation is about 165 mW, so the device is normally safe without a heatsink. Above ambient 60C in a sealed enclosure, place a 50x50 mm copper flood on the top layer connected to VSS to spread heat; the resulting theta_JA drop keeps junction rise below 30C.
Route the analog AN0-AN15 traces away from the PWM switching nets (PWM1H/L through PWM4H/L) to minimize capacitive coupling into ADC inputs. Place current-sense op-amp outputs within 25 mm of the ADC pins and use a 10 nF RC filter on each analog input if the source impedance exceeds 5 kohm. Keep the ICSP PGC/PGD pair short and well-clear of the high-current phase-switching paths.
Do not leave the MCLR pin floating; pull MCLR to VDD through a 10 kohm resistor with a 100 nF cap to VDD for noise immunity. The PGA (Program Gain Amplifier) and bandgap reference must be enabled before the ADC starts conversion - failure to wait the bandgap stabilization time (per datasheet AC characteristics) yields non-monotonic ADC results. Also confirm that the PWM fault pin (FLTA) is properly configured in firmware; an unexpected fault assertion will disable all PWM outputs.
Place the 80-pin TQFP on the top layer with a 4-layer stack-up using a continuous ground plane on layer 2 to provide a low-impedance return path for high-frequency switching. Route the oscillator traces (OSC1/OSC2) within 10 mm of the IC, guard them with a grounded copper pour, and keep them at least 5 mm away from PWM traces. Decouple each VDD/VSS pair with a 100 nF X7R 0402 ceramic cap directly on the power pins.
Compliance-Informationen
RoHS and lead-free per Microchip product page. AEC-Q100 not applicable - this is an industrial-grade part (I suffix = -40C to +85C); for automotive AEC-Q100 qualified motor controllers see dsPIC33CK and dsPIC33CH families.