DSPIC33FJ128MC708T-I/PT - 16-Bit 40MIPS 128KB Flash DSC | Microchip
MPN: DSPIC33FJ128MC708T-I/PT ✓ Hoạt độngDSPIC33FJ128MC708T-I/PT Tóm tắt
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.
Bộ thay thế dễ dàng lắp đặt cho DSPIC33FJ128MC708T-I/PT — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với DSPIC33FJ128MC708T-I/PT (cùng hình factor và footprint) — khác nhau ở Operating Temperature, Package, ADC, CPU Speed, Core Architecture.
DSPIC33FJ128MC708A-I/PT
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
DSPIC33FJ128MC708AT-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →DSPIC33FJ128MC706AT-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →DSPIC33FJ128MC706A-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →DSPIC33FJ128MC510A-I/PT
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
DSPIC33FJ128GP710AT-I/PT
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →DSPIC33FJ128MC708T-I/PT Tỷ lệ tối đa & tính chất điện
| Core | dsPIC33F (16-bit DSC) |
| CPU Speed | 40 MIPS |
| Program Memory (Flash) | 128 KB (128K x 8) |
| RAM | 16 KB |
| Điện áp cung cấp | 3.0 V to 3.6 V |
| Nhiệt độ hoạt động | -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 |
| Hộp | 80-pin TQFP (PT), 12x12 mm |
| Kiểu lắp đặt | Surface Mount |
| Debug Interface | ICSP / ICD |
| Trạng thái RoHS | Compliant |
Cấu hình chân DSPIC33FJ128MC708T-I/PT
| Chân 1 | VSS — Digital ground |
| Chân 2 | RP0/PWM1H — Remappable I/O / Motor PWM channel 1 high |
| Chân 3 | RP1/PWM1L — Remappable I/O / Motor PWM channel 1 low |
| Chân 4 | RP2/PWM2H — Remappable I/O / Motor PWM channel 2 high |
| Chân 5 | RP3/PWM2L — Remappable I/O / Motor PWM channel 2 low |
| Chân 6 | RP4/PWM3H — Remappable I/O / Motor PWM channel 3 high |
| Chân 7 | RP5/PWM3L — Remappable I/O / Motor PWM channel 3 low |
| Chân 8 | VSS — Digital ground |
| Chân 9 | RP6/PWM4H — Remappable I/O / Motor PWM channel 4 high |
| Chân 10 | RP7/PWM4L — Remappable I/O / Motor PWM channel 4 low |
| Chân 11 | RP8 — Remappable I/O |
| Chân 12 | RP9 — Remappable I/O |
| Chân 13 | RP10 — Remappable I/O |
| Chân 14 | RP11 — Remappable I/O |
| Chân 15 | VSS — Digital ground |
| Chân 16 | RP12 — Remappable I/O |
| Chân 17 | RP13 — Remappable I/O |
| Chân 18 | RP14 — Remappable I/O |
| Chân 19 | RP15 — Remappable I/O |
| Chân 20 | VDD — Digital supply 3.3V |
| Chân 21 | MCLR — Master clear (reset, active low) |
| Chân 22 | PGC — ICSP clock |
| Chân 23 | PGD — ICSP data |
| Chân 24 | VSS — Digital ground |
| Chân 25 | OSC1 — Crystal oscillator input |
| Chân 26 | OSC2 — Crystal oscillator output |
| Chân 27 | AN0/VREF+ — Analog input 0 / ADC Vref+ |
| Chân 28 | AN1/VREF- — Analog input 1 / ADC Vref- |
| Chân 29 | AN2 — Analog input 2 |
| Chân 30 | AN3 — Analog input 3 |
| Chân 31 | AN4 — Analog input 4 |
| Chân 32 | AN5 — Analog input 5 |
| Chân 33 | AVDD — Analog supply 3.3V |
| Chân 34 | AVSS — Analog ground |
| Chân 35 | AN6 — Analog input 6 |
| Chân 36 | AN7 — Analog input 7 |
| Chân 37 | AN8 — Analog input 8 |
| Chân 38 | AN9 — Analog input 9 |
| Chân 39 | AN10 — Analog input 10 |
| Chân 40 | AN11 — Analog input 11 |
| Chân 41 | AN12 — Analog input 12 |
| Chân 42 | AN13 — Analog input 13 |
| Chân 43 | AN14 — Analog input 14 |
| Chân 44 | AN15 — Analog input 15 |
| Chân 45 | VDD — Digital supply 3.3V |
| Chân 46 | VSS — Digital ground |
| Chân 47 | U1RX/RP16 — UART1 RX / remappable I/O |
| Chân 48 | U1TX/RP17 — UART1 TX / remappable I/O |
| Chân 49 | U2RX/RP18 — UART2 RX / remappable I/O |
| Chân 50 | U2TX/RP19 — UART2 TX / remappable I/O |
| Chân 51 | SDO1/RP20 — SPI1 data out / remappable I/O |
| Chân 52 | SDI1/RP21 — SPI1 data in / remappable I/O |
| Chân 53 | SCK1/RP22 — SPI1 clock / remappable I/O |
| Chân 54 | SS1/RP23 — SPI1 slave select / remappable I/O |
| Chân 55 | SDO2/RP24 — SPI2 data out / remappable I/O |
| Chân 56 | SDI2/RP25 — SPI2 data in / remappable I/O |
| Chân 57 | SCK2/RP26 — SPI2 clock / remappable I/O |
| Chân 58 | SS2/RP27 — SPI2 slave select / remappable I/O |
| Chân 59 | SDA1/RP28 — I2C1 data / remappable I/O |
| Chân 60 | SCL1/RP29 — I2C1 clock / remappable I/O |
| Chân 61 | C1RX/RP30 — CAN1 RX / remappable I/O |
| Chân 62 | C1TX/RP31 — CAN1 TX / remappable I/O |
| Chân 63 | T1CK/RP32 — Timer1 clock / remappable I/O |
| Chân 64 | T2CK/RP33 — Timer2 clock / remappable I/O |
| Chân 65 | T3CK/RP34 — Timer3 clock / remappable I/O |
| Chân 66 | T4CK/RP35 — Timer4 clock / remappable I/O |
| Chân 67 | T5CK/RP36 — Timer5 clock / remappable I/O |
| Chân 68 | IC1/RP37 — Input capture 1 / remappable I/O |
| Chân 69 | IC2/RP38 — Input capture 2 / remappable I/O |
| Chân 70 | OC1/RP39 — Output compare 1 / remappable I/O |
| Chân 71 | OC2/RP40 — Output compare 2 / remappable I/O |
| Chân 72 | VDD — Digital supply 3.3V |
| Chân 73 | VSS — Digital ground |
| Chân 74 | INT0/RP41 — External interrupt 0 / remappable I/O |
| Chân 75 | INT1/RP42 — External interrupt 1 / remappable I/O |
| Chân 76 | INT2/RP43 — External interrupt 2 / remappable I/O |
| Chân 77 | RTCC/RP44 — Real-time clock alarm / remappable I/O |
| Chân 78 | FLTA/RP45 — PWM fault input / remappable I/O |
| Chân 79 | NC — Not connected (per datasheet) |
| Chân 80 | NC — Not connected (per datasheet) |
Ứng dụng tiêu biểu
DSPIC33FJ128MC708T-I/PT phù hợp cho 6 Áp dụngs: 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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho DSPIC33FJ128MC708T-I/PT — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | 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 |
Bảo phân biệt quan trọng
- Dedicated 8-channel Motor Control PWM with hardware dead-time insertion (vsDSPIC33FJ128GP710AT-I/PT)
- Industry-standard dsPIC33F instruction set with single-cycle MAC (vsDSPIC33FJ128MC706AT-I/PT)
- Robust 4-sample-and-hold ADC for simultaneous phase-current sampling (vsDSPIC33FJ128MC510A-I/PT)
Ghi chú thiết kế
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.
Thông tin tuân thủ
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.