DSPIC33EP128MU202T-I/MM - 16-bit 70 MIPS DSC 128KB Flash USB | Microchip
MPN： DSPIC33EP128MU202T-I/MM ✓ 啟用中DSPIC33EP128MU202T-I/MM 概覽
A digital signal controller combines the peripherals and ease-of-use of a microcontroller with the computational throughput of a digital signal processor. Within Microchip's portfolio, the dsPIC33E family sits between general-purpose 16-bit PIC24 MCUs and high-performance 32-bit MCUs, offering single-cycle MAC, DSP multiply-accumulate instructions, and dual 40-bit accumulators, making it a power management IC-controller class device for real-time control systems.
Key differentiating features include the integrated USB 2.0 Full-Speed module (a capability the pin-compatible GP and MC variants lack), dual I2C, dual SPI, and dual UART peripherals for rich connectivity, up to 35 general-purpose I/O, and a 12-bit 1.1 Msps analog-to-digital converter. The 70 MIPS core executes from zero-wait-state Flash, and the device supports multiple switch-mode clock sources and PLL options for deterministic timing.
Architecturally, the dsPIC33EP core implements an enhanced Harvard pipeline with 16-bit data path, 40-bit wide accumulators, and X and Y data memories that allow concurrent fetch of two operands for DSP instructions. Peripheral Pin Select (PPS) lets developers remap digital functions to available pins, easing PCB routing in compact QFN-28 layouts.
Typical applications include motor control systems, digital power supplies, USB-connected industrial sensors, and real-time monitoring nodes where DSP math and USB communication are required on one chip.
A key design consideration: the internal core regulator requires a low-ESR VCAP capacitor on the VCAP pin for stable 1.8V core generation; omitting or misplacing it causes intermittent brownouts.
This page synthesizes distributor availability data, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
直接替換替代品，適用於 DSPIC33EP128MU202T-I/MM — 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： DSPIC33EP128MU202T-I/MM （相同外形與佔位） — 差異在於 Maximum CPU Speed, Operating Temperature, Package.
DSPIC33EP256MU202-I/MM
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
DSPIC33EP64MU202-I/MM
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
DSPIC33EP128MC202T-E/MM
✅ 直接替換聯絡詢價
查看資料表 →DSPIC33EP128GP202-I/MM
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
DSPIC33EP128MU202T-I/MM 最大額定值與電氣特性
| Core Architecture | 16-bit dsPIC DSC core |
| Maximum CPU Speed | 70 MIPS |
| Flash Program Memory | 128 KB |
| Operating Voltage | 3.0 V to 3.6 V |
| USB | USB 2.0 Full-Speed device |
| ADC Resolution | 12-bit |
| ADC Sample Rate | 1.1 Msps |
| UART Interfaces | 2 |
| SPI Interfaces | 2 |
| I2C Interfaces | 2 |
| 封裝 | QFN-28 (MM) 6x6 mm |
| 安裝類型 | Surface Mount |
| 工作溫度 | -40C to +85C (Industrial, I grade) |
| RoHS 狀態 | Lead free / RoHS Compliant |
| Packaging Suffix | T (Tape & Reel) |
| Product Series | dsPIC33EP128MU202 |
DSPIC33EP128MU202T-I/MM qfn-28 (mm) 6x6 mm 腳位配置指南
DSPIC33EP128MU202T-I/MM（qfn-28 (mm) 6x6 mm 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： DSPIC33EP128MU202T-I/MM.
請參閱 資料表 以查看完整腳位配置。
典型應用
DSPIC33EP128MU202T-I/MM 適用於 6 應用s: USB-Connected Industrial Sensors, Digital Power Supplies, Motor Control Systems, Portable Instruments and Handheld Test Devices, Audio Signal Processing Nodes, IoT Gateways and Real-Time Monitoring Nodes.
USB-Connected Industrial Sensors
The DSPIC33EP128MU202T-I/MM fits USB-connected industrial sensor nodes because it is one of the few dsPIC33E parts that integrates a USB 2.0 Full-Speed device controller with a 70 MIPS DSP core on the same die. A sensor node can sample an analog input with the 12-bit 1.1 Msps ADC, apply digital filtering or FFT processing using the DSP multiply-accumulate engine, and stream results over USB to a host PC without any external USB interface chip. The dual SPI and I2C interfaces connect additional digital sensors simultaneously. Compared with adding a discrete USB-UART bridge, the integrated USB saves board area in compact QFN-28 designs and enables firmware-updatable devices via a USB bootloader.
推薦
Digital Power Supplies
Digital power supply controllers benefit from the DSPIC33EP128MU202T-I/MM's 70 MIPS execution rate, which allows control-loop update periods in the microsecond range with single-cycle MAC instructions for PI/PID compensation. The 12-bit ADC can sample output voltage and current with 1.1 Msps capability, and PWM peripherals generate switching signals for buck, boost, or LLC stages. The DSP core processes the compensation loop deterministically from zero-wait-state Flash. Typical deployment is a 100-500 W auxiliary or telecom power stage where firmware-defined control thresholds, soft-start curves, and fault responses outperform fixed analog control, while USB enables field configuration of setpoints by a host controller.
推薦
Motor Control Systems
The dsPIC33E family is positioned by Microchip for high-performance, precision motor control, and the DSPIC33EP128MU202T-I/MM implements field-oriented control (FOC) for BLDC and permanent-magnet synchronous motors using its 70 MIPS DSP core and hardware MAC unit. Current and position feedback arrives through the 12-bit ADC and quadrature encoder inputs, while PWM peripherals drive a three-phase inverter. For designs needing dedicated motor-control PWM hardware, the pin-compatible DSPIC33EP128MC202 is the stronger choice; the MU202 fits USB-connected drives where commissioning and telemetry run over USB. Typical ratings span 24V to 48V industrial servo and actuator platforms.
推薦
Portable Instruments and Handheld Test Devices
Battery-powered instrumentation benefits from the DSPIC33EP128MU202T-I/MM's combination of low-power run modes, a 3.0V-3.6V single-rail supply, and USB device charging/data path in a 6x6 mm QFN-28 footprint. Signal capture uses the 12-bit 1.1 Msps ADC with the DSP engine performing windowing, filtering, or spectrum analysis locally; results are displayed on SPI or parallel-connected LCDs and uploaded via USB. Compared with an MCU-plus-external-DSP two-chip solution, the single-die integration reduces BOM count and sleep-current leakage paths, directly extending battery life in handheld multimeters, environmental meters, and portable diagnostic tools operating over -40C to +85C.
推薦
Audio Signal Processing Nodes
The DSP multiply-accumulate architecture of the DSPIC33EP128MU202T-I/MM suits embedded audio processing: 16-bit sample streams from a codec over I2S-compatible SPI or DCI interfaces can be filtered, mixed, or level-controlled with single-cycle MAC instructions at 70 MIPS, leaving headroom for a control interface on the second UART or USB. USB Full-Speed device support allows the same node to appear as a USB audio or HID device to a PC host. The 128 KB Flash accommodates substantial filter coefficient tables and multiple presets. While a dedicated audio DSP achieves higher channel counts, this single-chip DSC is economical for one- or two-channel industrial audio intercoms and alarm processors.
推薦
IoT Gateways and Real-Time Monitoring Nodes
The DSPIC33EP128MU202T-I/MM serves as the real-time acquisition element in IoT gateways: dual SPI and dual I2C buses aggregate multiple sensor ICs, the 12-bit ADC handles direct analog channels, and the USB device port provides a commissioning or firmware-update path to a laptop or host gateway. The 70 MIPS core pre-processes vibration or power-quality data (RMS, FFT) locally, transmitting summaries instead of raw streams to the cloud - reducing radio duty cycle and energy use. Peripheral Pin Select simplifies pin budgeting in the 28-pin QFN when several buses are active simultaneously, and the -40C to +85C industrial rating covers unconditioned edge deployments.
推薦
推薦產品摘要
工程參考資料，適用於 DSPIC33EP128MU202T-I/MM — 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 | DSPIC33EP256MU202-I/MM | DSPIC33EP64MU202-I/MM | DSPIC33EP128MC202T-E/MM | DSPIC33EP128GP202-I/MM |
|---|---|---|---|---|---|
| Package | QFN-28 (MM) 6x6 mm | QFN-28 (MM) - same | QFN-28 (MM) - same | QFN-28 (MM) - same | QFN-28 (MM) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 128 KB | 256 KB | 64 KB | 128 KB | 128 KB |
| CPU Speed | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS |
| USB Module | USB 2.0 Full-Speed device | USB 2.0 Full-Speed device | USB 2.0 Full-Speed device | None (motor-control PWM instead) | None |
| Peripheral Focus | USB + dual UART/SPI/I2C | USB + dual UART/SPI/I2C | USB + dual UART/SPI/I2C | Motor-control PWM | General purpose |
| Operating Temperature | -40C to +85C (I grade) | -40C to +85C (I grade) | -40C to +85C (I grade) | -40C to +125C (E grade) | -40C to +85C (I grade) |
| ADC | 12-bit, 1.1 Msps | 12-bit, 1.1 Msps | 12-bit, 1.1 Msps | 12-bit, 1.1 Msps | 12-bit, 1.1 Msps |
主要差異化特點
- Integrated USB 2.0 Full-Speed device controller (對比DSPIC33EP128GP202-I/MM)
- Flash headroom without footprint change (對比DSPIC33EP256MU202-I/MM)
- Industrial temperature grade availability (對比DSPIC33EP128MC202T-E/MM)
- Cost efficiency in the MU family (對比DSPIC33EP256MU202-I/MM)
設計說明
The dsPIC33EP core voltage is generated by an internal regulator; a low-ESR ceramic capacitor (on the order of 10 uF per Microchip family datasheet guidance) must be connected at the VCAP pin with a short, direct trace to VSS. Estimated guidance: keep VCAP trace inductance low because regulator instability here manifests as random resets under load transients, not clean brownouts. Do not drive any external load from VCAP. Supply the VDD pins from a 3.0V-3.6V rail; a 3.3V LDO with at least 100 mA headroom is typical for this device plus its I/O budget.
In the 6x6 mm QFN-28, place 0.1 uF decoupling capacitors within 2 mm of each VDD pin pair, and treat AVDD separately: an RC filter (e.g., 10 ohm + 1 uF, estimated values per common Microchip analog layouts) from VDD to AVDD measurably improves 12-bit ADC noise performance. The exposed die paddle should be soldered to a grounded array of vias for thermal and signal-integrity reasons. Keep the PGEC/PGED programming pads on accessible test points since USB cannot serve as the initial programming path.
Peripheral Pin Select (PPS) must be explicitly unlocked and configured before most digital peripherals route to pins - firmware that assumes fixed pin mapping (as on older PIC24) will appear 'dead'. MCLR must be pulled up (approximately 10 kohm, estimate) and not grounded during USB enumeration. The 'T' suffix denotes tape-and-reel packaging, not a die revision; ensure the ordering code matches temperature grade (-I = -40C to +85C). Confirm configuration bit settings for oscillator PLL before relying on the 70 MIPS maximum rating.
合規資訊
Distributor listings (YIC Electronics) state 'Lead free / RoHS Compliant'. REACH, halogen-free, and conflict-minerals declarations were not present in the verified web data and must be requested from Microchip. Standard (non-Q) part; no AEC-Q100 automotive qualification claimed.
