DSPIC33FJ128MC708T-I/PT - 16-Bit 40MIPS 128KB Flash DSC | Microchip
MPN: DSPIC33FJ128MC708T-I/PT ✓ פעילDSPIC33FJ128MC708T-I/PT סקירה
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.
חלופות תחליף ישיר עבור DSPIC33FJ128MC708T-I/PT — אותו מארז, תואם פין-לפין. חלקים במארז שונה הדורשים עיבוד מחדש של ה-PCB אינם נכללים.
וריאנטים בסדרה זו
דגמים מאותה סדרה התואמים Drop-in עם DSPIC33FJ128MC708T-I/PT (אותו גורם צורה וטביעת רגל) — שונים ב Operating Temperature, Package, ADC, CPU Speed, Core Architecture.
DSPIC33FJ128MC708A-I/PT
✅ Drop-In ⚠️ מפרטים לא מאומתים📋 חלופה להתייחסות (לא בקטלוג)
DSPIC33FJ128MC708AT-I/PT
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←DSPIC33FJ128MC706AT-I/PT
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←DSPIC33FJ128MC706A-I/PT
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←DSPIC33FJ128MC510A-I/PT
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
DSPIC33FJ128GP710AT-I/PT
✅ Drop-In ⚠️ מפרטים לא מאומתיםצור קשר לקבלת מחיר
הצג גיליון נתונים ←DSPIC33FJ128MC708T-I/PT דירוגים מרביים ומאפיינים חשמליים
| Core | dsPIC33F (16-bit DSC) |
| CPU Speed | 40 MIPS |
| Program Memory (Flash) | 128 KB (128K x 8) |
| RAM | 16 KB |
| מתח אספקה | 3.0 V to 3.6 V |
| טמפרטורת פעולה | -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 |
| מארז | 80-pin TQFP (PT), 12x12 mm |
| סוג הרכבה | Surface Mount |
| Debug Interface | ICSP / ICD |
| סטטוס RoHS | Compliant |
תצורת פינים של DSPIC33FJ128MC708T-I/PT
| פין 1 | VSS — Digital ground |
| פין 2 | RP0/PWM1H — Remappable I/O / Motor PWM channel 1 high |
| פין 3 | RP1/PWM1L — Remappable I/O / Motor PWM channel 1 low |
| פין 4 | RP2/PWM2H — Remappable I/O / Motor PWM channel 2 high |
| פין 5 | RP3/PWM2L — Remappable I/O / Motor PWM channel 2 low |
| פין 6 | RP4/PWM3H — Remappable I/O / Motor PWM channel 3 high |
| פין 7 | RP5/PWM3L — Remappable I/O / Motor PWM channel 3 low |
| פין 8 | VSS — Digital ground |
| פין 9 | RP6/PWM4H — Remappable I/O / Motor PWM channel 4 high |
| פין 10 | RP7/PWM4L — Remappable I/O / Motor PWM channel 4 low |
| פין 11 | RP8 — Remappable I/O |
| פין 12 | RP9 — Remappable I/O |
| פין 13 | RP10 — Remappable I/O |
| פין 14 | RP11 — Remappable I/O |
| פין 15 | VSS — Digital ground |
| פין 16 | RP12 — Remappable I/O |
| פין 17 | RP13 — Remappable I/O |
| פין 18 | RP14 — Remappable I/O |
| פין 19 | RP15 — Remappable I/O |
| פין 20 | VDD — Digital supply 3.3V |
| פין 21 | MCLR — Master clear (reset, active low) |
| פין 22 | PGC — ICSP clock |
| פין 23 | PGD — ICSP data |
| פין 24 | VSS — Digital ground |
| פין 25 | OSC1 — Crystal oscillator input |
| פין 26 | OSC2 — Crystal oscillator output |
| פין 27 | AN0/VREF+ — Analog input 0 / ADC Vref+ |
| פין 28 | AN1/VREF- — Analog input 1 / ADC Vref- |
| פין 29 | AN2 — Analog input 2 |
| פין 30 | AN3 — Analog input 3 |
| פין 31 | AN4 — Analog input 4 |
| פין 32 | AN5 — Analog input 5 |
| פין 33 | AVDD — Analog supply 3.3V |
| פין 34 | AVSS — Analog ground |
| פין 35 | AN6 — Analog input 6 |
| פין 36 | AN7 — Analog input 7 |
| פין 37 | AN8 — Analog input 8 |
| פין 38 | AN9 — Analog input 9 |
| פין 39 | AN10 — Analog input 10 |
| פין 40 | AN11 — Analog input 11 |
| פין 41 | AN12 — Analog input 12 |
| פין 42 | AN13 — Analog input 13 |
| פין 43 | AN14 — Analog input 14 |
| פין 44 | AN15 — Analog input 15 |
| פין 45 | VDD — Digital supply 3.3V |
| פין 46 | VSS — Digital ground |
| פין 47 | U1RX/RP16 — UART1 RX / remappable I/O |
| פין 48 | U1TX/RP17 — UART1 TX / remappable I/O |
| פין 49 | U2RX/RP18 — UART2 RX / remappable I/O |
| פין 50 | U2TX/RP19 — UART2 TX / remappable I/O |
| פין 51 | SDO1/RP20 — SPI1 data out / remappable I/O |
| פין 52 | SDI1/RP21 — SPI1 data in / remappable I/O |
| פין 53 | SCK1/RP22 — SPI1 clock / remappable I/O |
| פין 54 | SS1/RP23 — SPI1 slave select / remappable I/O |
| פין 55 | SDO2/RP24 — SPI2 data out / remappable I/O |
| פין 56 | SDI2/RP25 — SPI2 data in / remappable I/O |
| פין 57 | SCK2/RP26 — SPI2 clock / remappable I/O |
| פין 58 | SS2/RP27 — SPI2 slave select / remappable I/O |
| פין 59 | SDA1/RP28 — I2C1 data / remappable I/O |
| פין 60 | SCL1/RP29 — I2C1 clock / remappable I/O |
| פין 61 | C1RX/RP30 — CAN1 RX / remappable I/O |
| פין 62 | C1TX/RP31 — CAN1 TX / remappable I/O |
| פין 63 | T1CK/RP32 — Timer1 clock / remappable I/O |
| פין 64 | T2CK/RP33 — Timer2 clock / remappable I/O |
| פין 65 | T3CK/RP34 — Timer3 clock / remappable I/O |
| פין 66 | T4CK/RP35 — Timer4 clock / remappable I/O |
| פין 67 | T5CK/RP36 — Timer5 clock / remappable I/O |
| פין 68 | IC1/RP37 — Input capture 1 / remappable I/O |
| פין 69 | IC2/RP38 — Input capture 2 / remappable I/O |
| פין 70 | OC1/RP39 — Output compare 1 / remappable I/O |
| פין 71 | OC2/RP40 — Output compare 2 / remappable I/O |
| פין 72 | VDD — Digital supply 3.3V |
| פין 73 | VSS — Digital ground |
| פין 74 | INT0/RP41 — External interrupt 0 / remappable I/O |
| פין 75 | INT1/RP42 — External interrupt 1 / remappable I/O |
| פין 76 | INT2/RP43 — External interrupt 2 / remappable I/O |
| פין 77 | RTCC/RP44 — Real-time clock alarm / remappable I/O |
| פין 78 | FLTA/RP45 — PWM fault input / remappable I/O |
| פין 79 | NC — Not connected (per datasheet) |
| פין 80 | NC — Not connected (per datasheet) |
יישומים טיפוסיים
DSPIC33FJ128MC708T-I/PT מתאים עבור 6 יישוםs: 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.
מומלץ
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.
מומלץ
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.
מומלץ
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.
מומלץ
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.
מומלץ
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.
מומלץ
סיכום מוצרים מומלצים
נתוני עזר הנדסיים עבור DSPIC33FJ128MC708T-I/PT — השוואה, הנחיות תכנון ומידע על תאימות.
מדריך בחירה
השוואה עם חלופות
| פרמטר | מוצר זה | 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 |
מבדילים עיקריים
- Dedicated 8-channel Motor Control PWM with hardware dead-time insertion (לעומתDSPIC33FJ128GP710AT-I/PT)
- Industry-standard dsPIC33F instruction set with single-cycle MAC (לעומתDSPIC33FJ128MC706AT-I/PT)
- Robust 4-sample-and-hold ADC for simultaneous phase-current sampling (לעומתDSPIC33FJ128MC510A-I/PT)
הערות תכנון
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.
מידע על תאימות
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.