DSPIC33EP128MU202-E/SP - 16-bit DSC 128KB Flash 70 MIPS | Microchip
MPN： DSPIC33EP128MU202-E/SP ✓ 啟用中DSPIC33EP128MU202-E/SP 概覽
A digital signal controller combines the computational architecture of a digital signal processor with the peripheral integration and ease of use of a microcontroller. Within the power-management hierarchy of embedded systems, the DSC sits above generic MCUs for math-intensive control loops and below fully parallel DSPs in complexity, making it the standard choice for precision motor control and digital power conversion.
Key features of the DSPIC33EP128MU202-E/SP include the USB On-The-Go (OTG) module inherited from the MU series, up to two 16-bit sigma-delta-capable PWM peripherals, and a rich analog block with 12-bit ADC channels, comparators, and CTMU. The -E temperature suffix qualifies the part for extended industrial environments where -I grade (-40C to +85C) parts would be marginal.
Technically, the dsPIC33E core uses a modified Harvard architecture with a 16-bit datapath, DSP multiply-accumulate (MAC) instructions, and hardware divide support. Boot and security options include Flash self-programming and code protection, while in-circuit serial programming (ICSP) over MCLR/PGD/PGC enables field updates with standard Microchip programmers such as PICkit, ICD, and REAL ICE.
Typical applications span brushless DC and permanent-magnet motor drives, digital LED drivers, power-factor-correction converters, and USB-connected industrial sensing nodes where the USB OTG peripheral removes the need for an external USB interface chip.
Design consideration: budget the VCAP/VDDCORE pin carefully - the internal regulator requires the specified low-ESR capacitor, and omitting it is the most common cause of bring-up failures on this family.
This page synthesizes distributor availability, drop-in same-package alternatives, and practical design notes not found in the manufacturer datasheet.
直接替換替代品，適用於 DSPIC33EP128MU202-E/SP — 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： DSPIC33EP128MU202-E/SP （相同外形與佔位） — 差異在於 Operating Temperature, Package, Mounting Type, Core, Max CPU Speed.
DSPIC33EP256MU202-I/SP
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
DSPIC33EP64MU202-I/SP
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
DSPIC33EP32MU202-I/SP
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
DSPIC33EP128MC202-I/SP
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →DSPIC33EP128GP202-I/SP
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
DSPIC33EP128MU202-E/SP 最大額定值與電氣特性
| Core Architecture | 16-bit dsPIC33E DSC core |
| Max CPU Speed | 70 MIPS (approx. 3.3-3.6 V, PLL from internal FRC or external crystal) |
| Program Memory (Flash) | 128 KB |
| RAM | 16 KB |
| ADC Resolution | 12-bit |
| 工作溫度 | -40C to +125C (E suffix, extended) |
| 封裝 | 28-pin SPDIP (SP) |
| 安裝類型 | Through Hole |
| USB Interface | USB On-The-Go (OTG) module |
| Peripherals | 12-bit ADC, comparators, CTMU, PWM, timers, UART, SPI, I2C |
| Product Family | dsPIC33EP (MU series with USB OTG) |
| Programming Interface | ICSP (MCLR, PGD, PGC) |
| Device Type | Digital Signal Controller (DSC) |
DSPIC33EP128MU202-E/SP 腳位配置
| 腳位 1 | MCLR — Master clear reset input / programming voltage (VPP during ICSP) |
| 腳位 2 | RB0/AN0/VREF+/CN2 — Port B I/O, analog input 0, ADC positive voltage reference |
| 腳位 3 | RB1/AN1/VREF-/CN3 — Port B I/O, analog input 1, ADC negative voltage reference |
| 腳位 4 | RB2/AN2/SS1/CN4 — Port B I/O, analog input 2, SPI slave select 1 |
| 腳位 5 | RB3/AN3/INDX/CN5 — Port B I/O, analog input 3, encoder index input |
| 腳位 6 | RB4/AN4/QEA/IC7/CN6 — Port B I/O, analog input 4, encoder phase A, input capture 7 |
| 腳位 7 | VDD — Positive supply (per datasheet voltage range) |
| 腳位 8 | VSS — Ground reference |
| 腳位 9 | RA2/OSC1/CLKI/CN12 — Oscillator input / external clock input |
| 腳位 10 | RA3/OSC2/CLKO/CN13 — Oscillator output / clock output (crystal mode) |
| 腳位 11 | RB5/AN5/QEB/IC8/CN7 — Port B I/O, analog input 5, encoder phase B, input capture 8 |
| 腳位 12 | RB6/AN6/OCFA/IC1/TMS — Port B I/O, analog input 6, output-compare fault A, input capture 1 |
| 腳位 13 | RB7/AN7/PMA3/IC2/TCK — Port B I/O, analog input 7, parallel master address 3, input capture 2 |
| 腳位 14 | RB8/AN8/REFI/INT0/CN23 — Port B I/O, analog input 8, external interrupt 0 |
| 腳位 15 | RB9/AN9/T2CK/IC3/PMBE/TDI — Port B I/O, analog input 9, timer 2 clock, input capture 3 |
| 腳位 16 | RB10/AN10/T3CK/IC4/PMCS1/TDO — Port B I/O, analog input 10, timer 3 clock, input capture 4 |
| 腳位 17 | RB11/AN11/T5CK/IC7/PMCS2 — Port B I/O, analog input 11, timer 5 clock, input capture 7 |
| 腳位 18 | RB12/AN12/CN14 — Port B I/O, analog input 12 |
| 腳位 19 | RB13/AN13/CN15 — Port B I/O, analog input 13 |
| 腳位 20 | VCAP/VDDCORE — Internal core regulator output - connect specified low-ESR capacitor to VSS |
| 腳位 21 | RB14/AN14/CN16 — Port B I/O, analog input 14 |
| 腳位 22 | RB15/AN15/CN17 — Port B I/O, analog input 15 |
| 腳位 23 | VSS — Ground reference |
| 腳位 24 | VDD — Positive supply (per datasheet voltage range) |
| 腳位 25 | RF3/U1TX/SDO1 — Port F I/O, UART 1 transmit / SPI 1 data out |
| 腳位 26 | RF2/U1RX/SDI1 — Port F I/O, UART 1 receive / SPI 1 data in |
| 腳位 27 | VSS — Ground reference |
| 腳位 28 | AVDD — Analog positive supply - filter from VDD per datasheet |
典型應用
DSPIC33EP128MU202-E/SP 適用於 6 應用s: Brushless DC Motor Control, USB-Connected Industrial Sensing Nodes, Digital Power Conversion (PFC / LLC), Smart LED Lighting and Dimming, Portable and Handheld Instruments, Automotive-Adjacent and Harsh-Environment Control.
Brushless DC Motor Control
The DSPIC33EP128MU202-E/SP fits BLDC and permanent-magnet motor drives because its 70 MIPS dsPIC33E core executes field-oriented control (FOC) loops with hardware DSP multiply-accumulate instructions at the kHz update rates FOC demands. The 12-bit ADC provides the current-sense resolution needed for torque accuracy, while PWM modules generate complementary outputs with dead-time insertion for three-phase bridges. Firmware typically samples phase currents, runs Clarke/Park transforms and a PI current loop every PWM period, with ample headroom for speed loops and communication. The -E temperature grade tolerates drive enclosures approaching +85C ambient, and the 28-pin SPDIP suits prototyping before migrating to the same die in a surface-mount package for volume production.
推薦
USB-Connected Industrial Sensing Nodes
Nodes that stream sensor data to a PC or PLC benefit directly from the MU series integrated USB On-The-Go module, which eliminates an external USB interface chip and its firmware overhead. The 70 MIPS core handles signal processing - filtering, FFT, calibration math - while USB OTG handles device- or host-mode enumeration at full speed. The 12-bit ADC digitizes analog sensors (pressure, current, temperature) with 1.1 Msps-class sampling, and 128 KB Flash leaves room for bootloader plus logging firmware. The -40C to +125C qualification suits unheated cabinets and outdoor enclosures. Design consideration: the VCAP/VDDCORE capacitor on pin 20 must follow the datasheet value and placement, or USB sessions will show intermittent disconnects during bring-up.
推薦
Digital Power Conversion (PFC / LLC)
Power-factor-correction stages and LLC converters need deterministic, fast control loops: the DSPIC33EP128MU202-E/SP delivers with its 70 MIPS core, cycle-accurate PWM peripherals, and a 12-bit ADC fast enough to sample input/output voltage and inductor current within one switching period at hundreds of kHz. DSP MAC instructions execute the compensator math efficiently, and 16 KB RAM supports multi-loop state storage plus soft-start state machines. The extended -40C to +125C rating suits power supplies mounted above hot components. Firmware can implement phase shedding and burst mode for light-load efficiency. The 28-pin through-hole SPDIP makes prototyping and in-circuit rework straightforward on breadboard-style power-supply carriers before committing to a compact PCB.
推薦
Smart LED Lighting and Dimming
High-channel-count LED drivers benefit from the controller's PWM generation and ADC feedback: the DSPIC33EP128MU202-E/SP measures output current and temperature via the 12-bit ADC while PWM channels set dimming levels with fine duty-cycle resolution for flicker-free operation. The 70 MIPS core runs color-mixing algorithms, DMX-style protocol decoding, or closed-loop constant-current regulation simultaneously. The -E grade covers luminaire housings where trapped heat pushes ambient beyond +85C. USB OTG optionally enables configuration or firmware updates from a laptop in the field - a differentiator over non-USB parts in the same footprint. Reserve the VCAP pin layout per datasheet guidance, as the internal core regulator is sensitive to capacitor ESR and placement.
推薦
Portable and Handheld Instruments
Handheld meters, testers, and data loggers need battery efficiency plus a human interface: the dsPIC33E core provides low-power idle and sleep modes with fast wake-up, while its 70 MIPS capability keeps measurement bursts short, preserving battery life. The 12-bit ADC samples the front end, PWM drives buzzers or backlights, and UART/SPI/I2C connect displays and external memory. The USB OTG module lets the instrument charge from and upload logs to any PC without a dedicated converter chip. The through-hole 28-pin SPDIP is popular in low-volume and repairable instruments because it can be socketed for easy field replacement, and the -40C to +125C rating covers cold-storage and outdoor handheld use.
推薦
Automotive-Adjacent and Harsh-Environment Control
Off-highway equipment, agricultural retrofits, and under-hood auxiliary modules face ambients that exceed commercial ratings: the DSPIC33EP128MU202-E/SP carries -40C to +125C qualification, covering these environments where -I parts are marginal. The 70 MIPS core runs control and diagnostics, the 12-bit ADC handles sensor feedback with the CTMU available for capacitive touch panels, and PWM outputs drive actuators or heaters. 128 KB Flash accommodates layered firmware including fault logging. Note this part is not AEC-Q100 automotive qualified; for production automotive designs, select Microchip's automotive-qualified derivatives. The SPDIP package supports conformal-coated, serviceable control boards typical of retrofit and off-highway applications.
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推薦產品摘要
工程參考資料，適用於 DSPIC33EP128MU202-E/SP — 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/SP | DSPIC33EP64MU202-I/SP | DSPIC33EP32MU202-I/SP | DSPIC33EP128MC202-I/SP | DSPIC33EP128GP202-I/SP |
|---|---|---|---|---|---|---|
| Package | 28-pin SPDIP (SP) | 28-pin SPDIP (SP) - same | 28-pin SPDIP (SP) - same | 28-pin SPDIP (SP) - same | 28-pin SPDIP (SP) - same | 28-pin SPDIP (SP) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| CPU Speed | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS |
| Flash Memory | 128 KB | 256 KB | 64 KB | 32 KB | 128 KB | 128 KB |
| USB OTG | Yes | Yes | Yes | Yes | No (MC peripherals) | No (GP peripherals) |
| ADC Resolution | 12-bit | 12-bit | 12-bit | 12-bit | 12-bit | 12-bit |
| Operating Temperature | -40C to +125C (E) | -40C to +85C (I) | -40C to +85C (I) | -40C to +85C (I) | -40C to +85C (I); -E variant exists | -40C to +85C (I); -E variant exists |
主要差異化特點
- Integrated USB On-The-Go module (對比DSPIC33EP128MC202-I/SP)
- Extended +125C temperature qualification (對比DSPIC33EP256MU202-I/SP)
- Balanced memory configuration (對比DSPIC33EP64MU202-I/SP)
設計說明
The internal core regulator on the dsPIC33EP family requires the VCAP/VDDCORE pin (pin 20) to be tied to a low-ESR ceramic capacitor of the value specified in the datasheet (typically on the order of 10 uF) to VSS, with the shortest possible trace. An incorrect value or excessive ESR causes erratic operation, brown-out resets, or failure to boot. Place this capacitor before any other decoupling during layout review. AVDD (pin 28) should be isolated from digital VDD with an RC or ferrite filter to preserve 12-bit ADC accuracy.
Estimated: in a sealed enclosure at +85C ambient running at full 70 MIPS, internal dissipation is typically a few hundred milliwatts; with the SPDIP package's relatively high junction-to-ambient thermal resistance, junction temperature can approach the +125C maximum. The -E grade provides headroom, but verify junction temperature with Microchip's thermal data and your enclosure's effective theta-JA rather than assuming margin. Reducing core clock in idle periods via dynamic clock switching cuts dissipation substantially in battery and sealed applications.
Swapping to pin-compatible /SP alternatives is straightforward at the board level, but three firmware-level differences matter: the -I parts are not qualified beyond +85C, so do not substitute -E with -I in high-ambient designs; MC/GP variants lack USB OTG, so any USB bootloader or CDC stack will not run; and smaller-Flash parts (64/32 KB) may reject your linker script and application size. Always recompile with the target device selected in MPLAB X and re-run the flash-fit check before committing to a substitute.
合規資訊
Compliance data was not present in the provided verified web data. AEC-Q100: this is a standard industrial part, not an automotive-qualified derivative. Confirm RoHS/REACH status on the official Microchip product page compliance document before procurement.
