DSPIC33EP128MC204T-I/ML - 16-bit 70 MIPS DSC 128KB | Microchip
MPN： DSPIC33EP128MC204T-I/ML ✓ 啟用中DSPIC33EP128MC204T-I/ML 概覽
A digital signal controller combines the control peripherals of a microcontroller with the computational throughput of a DSP. Within the power-management hierarchy, the dsPIC33E family sits above general-purpose MCUs and below application processors, targeting closed-loop control systems. The dsPIC33EP128MC204 is a member of the Motor Control (MC) subfamily, which adds dedicated motor-control PWM hardware alongside standard ADC, UART, SPI and I2C peripherals.
Key features include a 16-bit modified Harvard architecture executing up to 70 MIPS, integrated DSP engine with single-cycle MAC and 40-bit accumulators, four DMA channels that offload data movement from the CPU, and five general-purpose timers. The MC subfamily adds complementary or edge-aligned motor-control PWM outputs with dead-time insertion, essential for driving three-phase inverters.
Technically, the CMOS device operates from a 3.0V to 3.6V single supply at core speeds up to approximately 60-70 MHz, using an internal PLL from an external crystal or internal oscillator. The 128KB self-programming FLASH supports field firmware updates, while 16KB of on-chip RAM buffers control loops and communication stacks.
Typical applications include brushless DC and permanent-magnet synchronous motor drives, digital power supplies such as PFC and LLC converters, solar inverters, and industrial automation nodes requiring deterministic control-loop execution.
Design consideration: the QFN exposed pad must be soldered to a grounded PCB thermal pad with multiple vias - it is both the primary ground return and heat-removal path; omitting it degrades signal integrity and thermal margin.
This page synthesizes distributor pricing, drop-in family alternatives, comparison tables, and practical design notes not found in the manufacturer datasheet, with prices as of 2026-09-23.
直接替換替代品，適用於 DSPIC33EP128MC204T-I/ML — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： DSPIC33EP128MC204T-I/ML （相同外形與佔位） — 差異在於 Package, Operating Temperature, Core, Core Architecture, Supply Voltage.
DSPIC33EP128MC204T-E/ML
✅ 直接替換聯絡詢價
查看資料表 →DSPIC33EP256MC204T-I/ML
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →DSPIC33EP64MC204T-I/ML
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →DSPIC33EP256MC204T-E/ML
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →DSPIC33EP128MC204T-I/PT
✅ 直接替換聯絡詢價
查看資料表 →DSPIC33EP128MC204T-I/ML 最大額定值與電氣特性
| Core Architecture | 16-bit dsPIC33E DSC |
| Max MIPS / DSC Performance | 70 MIPS |
| Core Clock Speed | 60 MHz |
| Program Memory (FLASH) | 128 KB (43K x 24) |
| RAM | 16 KB |
| 供應電壓 | 3 V to 3.6 V |
| 工作溫度 | -40C to +85C |
| DMA Channels | 4 |
| Timers | 5 |
| 封裝 | 44-QFN (8x8 mm) exposed pad |
| 安裝類型 | Surface Mount |
| Technology | CMOS |
| Number of Terminals | 44 |
| Product Family | dsPIC33EP128MC204 (Motor Control subfamily) |
DSPIC33EP128MC204T-I/ML 44-qfn (8x8 mm) exposed pad 腳位配置指南
DSPIC33EP128MC204T-I/ML（44-qfn (8x8 mm) exposed pad 封裝）的腳位配置。 此數位 IC 包含 GPIO、通訊介面（UART、SPI、I2C）與電源腳位。替代腳位功能與配置選項請參閱製造商資料表。對嵌入式系統設計與 PCB 佈局至關重要。
無詳細腳位定義資料： DSPIC33EP128MC204T-I/ML.
請參閱 資料表 以查看完整腳位配置。
典型應用
DSPIC33EP128MC204T-I/ML 適用於 6 應用s: Brushless DC / PMSM Motor Control, Digital Power Supplies (PFC / LLC), Solar Micro-Inverters, Industrial Automation and Sensing Nodes, Portable and Handheld Instruments, Power Tools and Appliance Motor Drives.
Brushless DC / PMSM Motor Control
The DSPIC33EP128MC204T-I/ML is purpose-built for precision motor drives: its dedicated motor-control PWM offers complementary outputs with programmable dead-time insertion, while the 70 MIPS 16-bit DSP core executes field-oriented control (FOC) loops fast enough for high-dynamic servos. The 4-channel DMA streams ADC current-sense samples into RAM without CPU intervention, keeping the control loop deterministic. In a typical sensorless BLDC design, the controller runs at 3.3V, samples phase currents at PWM-frequency rates, and computes Clarke/Park transforms with single-cycle MAC instructions. The compact 44-QFN (8x8 mm) fits directly on the inverter PCB, and the exposed pad provides a low-inductance ground for gate-driver referencing.
推薦
Digital Power Supplies (PFC / LLC)
Switching power converters such as boost PFC stages and LLC resonant converters demand fast, deterministic control loops - exactly what this DSC provides with its 70 MIPS core, high-speed PWM peripherals, and 1.1 Msps-class on-chip ADC sampling. The DSP engine's single-cycle MAC accelerates compensator calculations (PID or 2p2z) inside each switching period, while DMA moves current and voltage samples without CPU loading. Running from a single 3.3V rail, the DSPIC33EP128MC204T-I/ML replaces multiple analog control ICs with one programmable device, enabling adaptive mode switching between light and heavy load. The 128KB FLASH holds the state machines and protection routines; 16KB RAM buffers telemetry and communication frames.
推薦
Solar Micro-Inverters
Solar micro-inverters combine MPPT control, grid-synchronized current shaping, and safety monitoring in a thermally harsh outdoor enclosure. The DSPIC33EP128MC204T-I/ML executes MPPT algorithms and grid-current control loops on its 70 MIPS DSP core, generating phase-shifted PWM for the power stage from its motor-control PWM modules. The -40C to +85C industrial temperature range matches rooftop installation conditions, and the 44-QFN exposed-pad package dumps heat efficiently into the PCB ground plane. Four DMA channels offload sensor sampling, and the 128KB self-programming FLASH supports grid-code firmware updates in the field via an on-chip bootloader, keeping deployed inverters compliant as regional standards evolve.
推薦
Industrial Automation and Sensing Nodes
In factory automation, this DSC serves as an intelligent node processing sensor data and driving actuators over industrial buses. The 16-bit core at 70 MIPS handles filtering and DSP-style signal conditioning (RMS computation, FFT-based diagnostics), while hardware UART, SPI, and I2C interfaces connect to encoders, transceivers, and displays. Five timers provide coordinated event generation for sampling and output sequencing, and 4 DMA channels sustain high-rate data streaming into the 16KB RAM. The -40C to +85C rating survives unconditioned cabinets, and the 3.0V-3.6V supply integrates cleanly with standard 3.3V industrial logic. The 44-QFN footprint conserves board space in distributed I/O modules and smart sensors.
推薦
Portable and Handheld Instruments
Battery-powered test and measurement instruments benefit from the balance of DSP throughput and low peripheral count in the DSPIC33EP128MC204T-I/ML. The 70 MIPS core performs real-time signal analysis - tone detection, harmonic measurement, vibration analysis - using single-cycle MAC and 40-bit accumulators that preserve numerical accuracy in long accumulations. Operation from 3.0V to 3.6V allows direct use of a single-cell Li-ion rail through an LDO, and the 44-QFN (8x8 mm) package keeps the main controller compact enough for handheld form factors. The 128KB FLASH stores application code plus a USB/UART bootloader, while 16KB RAM holds acquisition buffers processed under DMA control for consistent sampling latency.
推薦
Power Tools and Appliance Motor Drives
Cordless power tools and premium appliances increasingly use sensorless PMSM drives for efficiency and acoustic benefits. The DSPIC33EP128MC204T-I/ML provides the complete digital control section: motor-control PWM with dead-time drives the three-phase inverter, high-speed ADC with DMA captures back-EMF and bus-current feedback, and the 70 MIPS DSP core runs sliding-mode or FOC estimators in real time at 3.3V. The -40C to +85C range covers enclosed motor compartments, and the exposed-pad QFN withstands the vibration and thermal cycling typical of these products. Firmware stored in 128KB FLASH can implement stall detection, soft start, and multi-speed profiles without changing hardware across a product family.
推薦
推薦產品摘要
工程參考資料，適用於 DSPIC33EP128MC204T-I/ML — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | DSPIC33EP128MC204T-E/ML | DSPIC33EP256MC204T-I/ML | DSPIC33EP64MC204T-I/ML | DSPIC33EP128MC204T-I/PT |
|---|---|---|---|---|---|
| Package | 44-QFN (8x8 mm) | 44-QFN (8x8 mm) - same | 44-QFN (8x8 mm) - same | 44-QFN (8x8 mm) - same | 44-TQFP (10x10 mm) |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| FLASH Program Memory | 128 KB (43K x 24) | 128 KB | 256 KB | 64 KB | 128 KB |
| RAM | 16 KB | 16 KB | 16 KB | 16 KB | 16 KB |
| Core Performance | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS |
| Operating Temperature | -40C to +85C | -40C to +125C | -40C to +85C | -40C to +85C | -40C to +85C |
| DMA Channels | 4 | 4 | 4 | 4 | 4 |
| Supply Voltage | 3 V to 3.6 V | 3 V to 3.6 V | 3 V to 3.6 V | 3 V to 3.6 V | 3 V to 3.6 V |
| Packaging | Tape & Reel | Tape & Reel | Tape & Reel | Tape & Reel | Tape & Reel |
主要差異化特點
- Industrial temperature ceiling (對比DSPIC33EP128MC204T-E/ML)
- Cost-optimized memory density (對比DSPIC33EP256MC204T-I/ML)
- QFN footprint vs TQFP assembly (對比DSPIC33EP128MC204T-I/PT)
設計說明
The 44-QFN exposed pad is the primary ground connection and thermal path. Design the PCB landing pad slightly smaller than the pad (about 20-30% thermal relief via the surrounding solder mask), and place a 3x3 or larger via array under the pad, filled or tented, connecting to the ground plane. Insufficient exposed-pad soldering is the most common cause of intermittent grounds and ADC noise issues on QFN dsPIC designs; use X-ray or cross-section sampling in production qualification.
Supply the DSC from a clean 3.3V rail within 3.0V-3.6V. Decouple every VDD pin with 0.1uF ceramic capacitors placed within 2-3 mm of the pin, plus one bulk 10uF near the device. VDDCORE regulation requirements and recommended capacitor values are specified in the dsPIC33EP family datasheet power section - follow the reference schematic exactly, as the E-core is sensitive to core-rail ripple. Separate analog VDD/AVSS routing with a ferrite or RC filter improves ADC accuracy in motor-control current sampling.
Estimated: DSP operating margins assume the PLL is configured per the datasheet FRC/XT + PLL combinations - do not exceed the 70 MIPS ceiling, as overclocking beyond it causes unreliable FLASH execution. Verify the -I temperature suffix against your enclosure: this part is rated only to +85C; if the PCB sits near a motor or power stage where ambient exceeds 85C, substitute the DSPIC33EP128MC204T-E/ML extended-grade drop-in. Also confirm PGC/PGD ICSP traces include series resistors for in-circuit debugging.
合規資訊
Compliance data was not present in the provided web data. Microchip standard product is typically RoHS-compliant, but per data authenticity rules this must be confirmed from the Microchip product page or datasheet before claiming.
