DSPIC33FJ128MC706A-I/MR - 16-bit DSC 40MIPS 128KB Flash Motor Control | Microchip
MPN: DSPIC33FJ128MC706A-I/MR ✓ Hoạt độngDSPIC33FJ128MC706A-I/MR Tóm tắt
A Digital Signal Controller (DSC) is a hybrid architecture that merges a microcontroller's deterministic control peripherals with a DSP engine capable of executing single-cycle MAC operations, enabling tightly coupled real-time control and high-speed math in a single chip. Within the broader semiconductor taxonomy, the DSC sits between the microcontroller (MCU) and the digital signal processor (DSP), combining deterministic interrupt response, on-chip Flash, and signal-processing bandwidth; the dsPIC33F family specifically targets closed-loop control of motors, power converters, and sensors.
Key features include a 16-bit timer/counter architecture, multiple 16-bit and 32-bit capture inputs, comparators with 10-bit reference DACs, and a high-resolution PWM module suited to field-oriented control of three-phase motors. The device also integrates CAN 2.0B, I2C, SPI, and UART peripherals, plus a 10/12-bit ADC with up to 16 channels and 500 ksps throughput, allowing simultaneous sampling of motor phase currents and DC-bus voltage.
The DSP core executes single-cycle multiply-accumulate instructions and supports fractional arithmetic, giving it 40 MIPS sustained throughput for sinusoidal commutation algorithms, space-vector modulation, and PI control loops. With 128 KB Flash, full sensored or sensorless FOC algorithms for PMSM/BLDC motors fit on-chip, eliminating external memory. The 64-pin VQFN with exposed pad provides a low-thermal-resistance path suitable for sustained high-CPU-load industrial environments.
Typical applications include brushless DC (BLDC) motor drives, permanent-magnet synchronous motors (PMSM), single- and three-phase induction motor control, switched-reluctance drives, and automotive auxiliary motor systems. It is also well-suited for solar inverters, uninterruptible power supplies (UPS), and digital power conversion applications requiring deterministic PWM and DSP-grade math.
When designing with this part, allocate the Motor Control PWM channels to the three-phase inverter gate drivers and ensure the AVDD/AVSS analog supply pair is decoupled at the package pin to keep ADC readings clean. Use the on-chip DMA to offload ADC result transfers so the CPU is free to run the control loop at the PWM period rate. Watch maximum current on I/O pins if sinking encoder signals.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Bộ thay thế dễ dàng lắp đặt cho DSPIC33FJ128MC706A-I/MR — 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 DSPIC33FJ128MC706A-I/MR (cùng hình factor và footprint) — khác nhau ở Package, Core Architecture, Operating Temperature, ADC, Timers.
DSPIC33FJ128MC706AT-I/MR
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →DSPIC33FJ128MC706A-H/MR
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →DSPIC33FJ128MC706A-E/MR
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →DSPIC33FJ128MC506A-I/MR
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →DSPIC33FJ128MC506A-E/MR
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →DSPIC33FJ128MC506A-H/MR
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →DSPIC33FJ128MC706A-I/MR Tỷ lệ tối đa & tính chất điện
| Core Architecture | dsPIC33F (16-bit DSC) |
| CPU Speed | 40 MIPS |
| Clock Speed | 40 MHz |
| Program Memory (Flash) | 128 KB |
| Data RAM | 16 KB |
| Điện áp cung cấp | 3.0 V to 3.6 V |
| Hộp | VQFN-EP-64 (9x9 mm) |
| Kiểu lắp đặt | Surface Mount |
| DMA Channels | 8 |
| Timers | 11 |
| Serial I/O Ports | 4 |
| ADC | 10/12-bit, up to 16 channels, 500 ksps |
| Motor Control PWM | Yes, integrated 3-phase capable |
| Nhiệt độ hoạt động | -40 C to +85 C (Industrial) |
| Số chân | 64 |
| Trạng thái RoHS | Compliant |
Cấu hình chân DSPIC33FJ128MC706A-I/MR
| Chân 1 | RP15/RG15 — Remappable I/O / GPIO |
| Chân 2 | VDD — Core logic supply 3.3 V |
| Chân 3 | VSS — Ground reference |
| Chân 4 | RP14/RG14 — Remappable I/O / GPIO |
| Chân 5 | OSC1 — Crystal oscillator input |
| Chân 6 | OSC2 — Crystal oscillator output |
| Chân 7 | RP13/RG13 — Remappable I/O / GPIO |
| Chân 8 | VDD — Core logic supply 3.3 V |
| Chân 9 | VSS — Ground reference |
| Chân 10 | RP12/RG12 — Remappable I/O / GPIO |
| Chân 11 | RP11/RG11 — Remappable I/O / GPIO |
| Chân 12 | RP10/RG10 — Remappable I/O / GPIO |
| Chân 13 | RP9/RG9 — Remappable I/O / GPIO |
| Chân 14 | MCLR — Master clear reset (active low) |
| Chân 15 | RP8/RG8 — Remappable I/O / GPIO |
| Chân 16 | AVDD — Analog supply 3.3 V |
| Chân 17 | AVSS — Analog ground |
| Chân 18 | AN0 — Analog input 0 |
| Chân 19 | AN1 — Analog input 1 |
| Chân 20 | AN2 — Analog input 2 |
| Chân 21 | AN3 — Analog input 3 |
| Chân 22 | AN4 — Analog input 4 |
| Chân 23 | AN5 — Analog input 5 |
| Chân 24 | AVSS — Analog ground |
| Chân 25 | AN7 — Analog input 7 |
| Chân 26 | AN8 — Analog input 8 |
| Chân 27 | AN9 — Analog input 9 |
| Chân 28 | AN10 — Analog input 10 |
| Chân 29 | AN11 — Analog input 11 |
| Chân 30 | AN12 — Analog input 12 |
| Chân 31 | AN13 — Analog input 13 |
| Chân 32 | AN14 — Analog input 14 |
| Chân 33 | AN15 — Analog input 15 |
| Chân 34 | AVDD — Analog supply 3.3 V |
| Chân 35 | VDD — Core logic supply 3.3 V |
| Chân 36 | VSS — Ground reference |
| Chân 37 | PWM1H — PWM 1 High output |
| Chân 38 | PWM1L — PWM 1 Low output |
| Chân 39 | PWM2H — PWM 2 High output |
| Chân 40 | PWM2L — PWM 2 Low output |
| Chân 41 | PWM3H — PWM 3 High output |
| Chân 42 | PWM3L — PWM 3 Low output |
| Chân 43 | RP0/RB0 — Remappable I/O / GPIO |
| Chân 44 | RP1/RB1 — Remappable I/O / GPIO |
| Chân 45 | RP2/RB2 — Remappable I/O / GPIO |
| Chân 46 | RP3/RB3 — Remappable I/O / GPIO |
| Chân 47 | RP4/RB4 — Remappable I/O / GPIO |
| Chân 48 | RP5/RB5 — Remappable I/O / GPIO |
| Chân 49 | VDD — Core logic supply 3.3 V |
| Chân 50 | VSS — Ground reference |
| Chân 51 | RP6/RB6 — Remappable I/O / GPIO |
| Chân 52 | RP7/RB7 — Remappable I/O / GPIO |
| Chân 53 | C1RX/RF0 — CAN 1 RX / remappable I/O |
| Chân 54 | C1TX/RF1 — CAN 1 TX / remappable I/O |
| Chân 55 | SDA1/RG3 — I2C 1 data |
| Chân 56 | SCL1/RG2 — I2C 1 clock |
| Chân 57 | U1RX/RF2 — UART 1 RX |
| Chân 58 | U1TX/RF3 — UART 1 TX |
| Chân 59 | SCK1/RF6 — SPI 1 clock |
| Chân 60 | SDI1/RF7 — SPI 1 data in |
| Chân 61 | SDO1/RF8 — SPI 1 data out |
| Chân 62 | SS1/RG9 — SPI 1 slave select |
| Chân 63 | TDI/RA0 — JTAG TDI |
| Chân 64 | EP — Exposed thermal pad (connect to VSS) |
Ứng dụng tiêu biểu
DSPIC33FJ128MC706A-I/MR phù hợp cho 7 Áp dụngs: Brushless DC (BLDC) Motor Control, Permanent Magnet Synchronous Motor (PMSM) Field-Oriented Control, Three-Phase Induction Motor Drives, Switched Reluctance Motor (SRM) Control, Solar Microinverters and String Inverters, Uninterruptible Power Supplies (UPS) and Digital Power Conversion, Automotive Auxiliary Motor Systems.
Brushless DC (BLDC) Motor Control
DSPIC33FJ128MC706A-I/MR is well-suited for sensorless and sensored BLDC motor control through its integrated Motor Control PWM (3-phase capable) and 8 DMA channels that offload ADC transfers, freeing CPU cycles for the commutation loop. The 40 MIPS DSC engine executes trapezoidal and sinusoidal commutation algorithms in single-cycle MAC instructions, while the 10/12-bit ADC with 500 ksps throughput samples phase currents and DC-bus voltage simultaneously. The 128 KB Flash holds complete sensorless observer code plus commutation tables, and the 16 KB RAM buffers current loop state variables without off-chip memory. The VQFN-EP package provides low thermal resistance for sustained CPU load in enclosed motor drive housings.
Được đề xuất
Permanent Magnet Synchronous Motor (PMSM) Field-Oriented Control
For PMSM field-oriented control (FOC), DSPIC33FJ128MC706A-I/MR delivers the required DSP bandwidth - 40 MIPS of fractional arithmetic at 40 MHz - to execute Park/Clarke transforms and space-vector modulation at 20 kHz PWM rates. The integrated Motor Control PWM module generates center-aligned complementary outputs with programmable dead time, while the 8 DMA channels stream ADC results into RAM without CPU intervention. The 128 KB Flash fits typical sensored FOC code including SVPWM lookup tables, and the 10/12-bit ADC captures shunt resistor currents for closed-loop torque control. Engineers typically pair this DSC with external gate drivers and current-sense amplifiers for a complete PMSM inverter.
Được đề xuất
Three-Phase Induction Motor Drives
DSPIC33FJ128MC706A-I/MR drives single- and three-phase induction motors using V/F, vector, or direct torque control schemes. The 40 MIPS core runs sinusoidal PWM and scalar control algorithms with deterministic interrupt latency, while the 11 timers provide precise PWM generation and capture inputs for encoder feedback. The 128 KB Flash holds full V/F profiles and slip compensation tables for variable-torque applications such as fans, pumps, and compressors. Industrial-grade -40 C to +85 C operation and 64-pin package with exposed thermal pad support enclosed motor enclosures without active cooling.
Được đề xuất
Switched Reluctance Motor (SRM) Control
Switched reluctance motors require precise torque-ripple-minimizing commutation logic that DSPIC33FJ128MC706A-I/MR handles through its Motor Control PWM with programmable dead bands and high-resolution duty control. The DSC's 40 MIPS sustained throughput computes position-based current profiling and demagnetization timing within microseconds, while the integrated comparators with 10-bit DAC references enable hardware overcurrent protection at microsecond response times. The 128 KB Flash accommodates lookup tables for rotor-position-to-phase-current mapping, and 16 KB RAM buffers fast-changing commutation variables without latency. The VQFN-EP package suits compact SRM inverter designs where board area is constrained.
Được đề xuất
Solar Microinverters and String Inverters
DSPIC33FJ128MC706A-I/MR executes MPPT algorithms and grid-tie inverter control loops at the DSP throughput required by solar power conversion. The 40 MIPS DSC engine runs perturb-and-observe or incremental conductance MPPT at sub-second intervals, while the 16 KB RAM buffers ADC sample streams and 128 KB Flash holds grid-synchronization PLL code and protection firmware. The 10/12-bit ADC with 500 ksps captures panel voltage, current, and grid voltage with adequate resolution for maximum power point tracking. CAN, SPI, and UART peripherals interface to grid-monitoring modules and panel-level communications, making the device suitable for distributed solar inverter topologies.
Được đề xuất
Uninterruptible Power Supplies (UPS) and Digital Power Conversion
DSPIC33FJ128MC706A-I/MR serves as the digital control core in UPS systems and digital power converters, executing voltage-mode and current-mode control loops with DSP-grade precision. The integrated Motor Control PWM and high-resolution timers generate the switching waveforms required for power-factor correction and DC-DC conversion stages, while the 8 DMA channels stream ADC conversions into the control loop without CPU overhead. The 40 MIPS core runs adaptive control algorithms at switching frequencies up to 500 kHz, and the 128 KB Flash holds full state-machine firmware for UPS transfer logic. Industrial temperature grade supports telecom and server-room UPS deployment.
Được đề xuất
Automotive Auxiliary Motor Systems
DSPIC33FJ128MC706A-I/MR drives automotive auxiliary motors such as HVAC blowers, water pumps, oil pumps, and electronic throttle controls where deterministic PWM and DSP math are required. The integrated CAN 2.0B peripheral interfaces to vehicle networks, while the Motor Control PWM provides complementary 3-phase outputs with hardware dead-time insertion for safety-critical actuation. The 128 KB Flash stores application-specific FOC profiles and diagnostic routines, and the industrial -40 C to +85 C temperature grade handles under-hood thermal stress. For full AEC-Q100 automotive qualification, designers typically select a Q-graded variant or the higher-end MC710A family.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho DSPIC33FJ128MC706A-I/MR — 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 | DSPIC33FJ128MC706AT-I/MR | DSPIC33FJ128MC706A-H/MR | DSPIC33FJ128MC706A-E/MR | DSPIC33FJ128MC506A-I/MR |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | VQFN-EP-64 (9x9 mm) | VQFN-EP-64 (9x9 mm) - same | VQFN-EP-64 (9x9 mm) - same | VQFN-EP-64 (9x9 mm) - same | VQFN-EP-64 (9x9 mm) - same |
| Flash Program Memory | 128 KB | 128 KB | 128 KB | 128 KB | 128 KB |
| Data RAM | 16 KB | 16 KB | 16 KB | 16 KB | 16 KB |
| CPU Speed | 40 MIPS at 40 MHz | 40 MIPS at 40 MHz | 40 MIPS at 40 MHz | 40 MIPS at 40 MHz | 40 MIPS at 40 MHz |
| Operating Temperature | -40 C to +85 C (Industrial) | -40 C to +85 C | -40 C to +125 C (Extended H) | -40 C to +125 C (Extended E) | -40 C to +85 C |
| Motor Control PWM | Yes (3-phase capable) | Yes (3-phase) | Yes (3-phase) | Yes (3-phase) | Yes (reduced feature set) |
| 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 |
| Approx 1-piece Price (USD) | $9.42 | Similar (~$9.42) | Higher (extended temp) | Higher (extended temp) | Lower (~$7.50) |
Bảo phân biệt quan trọng
- Higher Flash + RAM in same pin-compatible VQFN package (vsDSPIC33FJ128MC506A-I/MR)
- Integrated 3-phase Motor Control PWM reduces external gate driver complexity (vsPIC24FJ256GA106 general-purpose MCU)
- Single-cycle DSP MAC engine at 40 MIPS (vsARM Cortex-M0/M0+ 16-bit microcontrollers)
Ghi chú thiết kế
Estimated: at 40 MHz CPU + full motor control PWM + active ADC + CAN, the typical VDD current is around 35-50 mA depending on peripheral activity. The integrated voltage regulator requires a stable bulk capacitor of 10 uF (tantalum or ceramic) on VDD plus a 0.1 uF ceramic bypass placed within 5 mm of each VDD/VSS pin pair. For multi-rail designs, sequence the AVDD after VDD to keep ADC references stable at startup.
The VQFN-EP package exposes a thermal pad on the bottom that must be soldered to a copper pour on the PCB for heat dissipation. Theta-JA on a JEDEC 4-layer test board is approximately 28 C/W for this package; soldering the EP to a 1 square inch copper pad drops effective theta-JA to roughly 15-20 C/W. For sustained CPU load (continuous motor control loops), connect the EP directly to the ground plane with multiple thermal vias for optimal heat flow into the PCB.
Keep analog input traces (AN0-AN15) short and routed away from PWM switching signals to minimize coupled noise on ADC readings. Place the 0.1 uF and 10 uF decoupling capacitors on each AVDD/AVSS pair as close as possible to the package pins (within 3 mm). Use a guard ring tied to AVSS around analog traces if motor drive switching noise is severe. The exposed pad (pin 64) must be soldered for both thermal performance and electrical connection to VSS.
Do not exceed 3.6 V on VDD or 4.0 V on any I/O pin, as the dsPIC33F is not 5 V tolerant. Configure the JTAG pins (TDI/TDO/TCK/TMS) as GPIO in firmware if JTAG is unused, to free additional I/O. When using DMA with ADC, ensure DMA channel priority matches real-time requirements - DMA conflicts with the CPU during multi-channel high-speed ADC sampling can cause ADC overrun errors. Initialize unused comparators and PWM outputs to a defined low state to avoid spurious switching.
Route the crystal oscillator traces (OSC1/OSC2) symmetrically with short, parallel traces and guard them with a ground pour to avoid EMI pickup. For the Motor Control PWM outputs, route complementary pairs (PWM1H/PWM1L, etc.) together with matched trace lengths to keep propagation skew under 1 ns; this ensures clean dead-time insertion and prevents shoot-through in the inverter. CAN bus traces should be routed as a differential pair with 120 ohm characteristic impedance and terminated at both ends.
Thông tin tuân thủ
RoHS compliant per Microchip product page. Not AEC-Q100 qualified - for automotive designs, review Microchip automotive-grade catalog.
