DSPIC33EP128MU502-I/SP - 70MIPS 16-bit USB DSC | Microchip
MPN: DSPIC33EP128MU502-I/SP ✓ فعالDSPIC33EP128MU502-I/SP نمای کلی
A digital signal controller combines the computational capability of a DSP with the peripheral set and ease of use of a microcontroller. Within the power-management hierarchy, DSCs occupy the space between general-purpose MCUs and dedicated DSPs, making them the device of choice for control loops that need both fast math (MAC instructions, DSP engine) and flexible digital and analog peripherals.
Key features of this part include the dsPIC33E 16-bit core running at up to 70 MIPS, 128 KB of self-programmable Flash, 16 KB of on-chip RAM, and full-speed USB 2.0 On-The-Go (OTG) capability, which distinguishes the MU sub-family from the GP and MC variants. A 12-bit ADC with multiple sample-and-hold circuits supports simultaneous sampling for high-precision control applications.
Architecturally, the dsPIC33EP core pairs two 40-bit wide accumulators and a hardware DSP engine (17x17 MAC, dual operand fetch) with deterministic interrupt latency, allowing filter and control algorithms to execute in fixed cycle counts. In-Circuit Serial Programming (ICSP) and in-circuit debugging are supported through the MPLAB SNAP or PICkit programmers using just two device I/O pins.
Typical applications include USB-connected industrial instruments, digital power supplies and PFC converters, brushless DC motor control, and general embedded systems that benefit from DSP-class math in a DIP package that is easy to prototype and socket.
Design consideration: the dsPIC33EP core requires a VDDCORE/VCAP stabilization capacitor on pin 11; do not omit it, and sequence 3.3V supply within the 3.0V to 3.6V operating range.
This page synthesizes distributor inventory data, drop-in alternatives, pricing tiers, and practical design notes beyond what the manufacturer datasheet provides.
جایگزین‌های drop-in برای DSPIC33EP128MU502-I/SP — همان پکیج، سازگار پین‌به‌پین. قطعات با پکیج متفاوت که نیاز به تغییر PCB دارند مستثنی هستند.
گونه‌ها در این سری
مدل‌های هم‌سری که جایگزین مستقیم هستند برای DSPIC33EP128MU502-I/SP (همان فرم‌فاکتور و فوت‌پرینت) — متفاوت در Package, Core, Mounting Type, ADC Resolution, Operating Temperature.
DSPIC33EP128MU502-E/SP
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←DSPIC33EP128MU502-H/SP
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←DSPIC33EP128GP502-I/SP
✅ جایگزین مستقیم ⚠️ مشخصات تأییدنشده📋 جایگزین مرجع (خارج از کاتالوگ)
DSPIC33EP128MC502-I/SP
✅ جایگزین مستقیم ⚠️ مشخصات تأییدنشدهبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←DSPIC33EP128MU502-I/SP حداکثر مقادیر مجاز و مشخصات الکتریکی
| Core | dsPIC33E 16-bit DSC |
| CPU Speed | 70 MIPS |
| Program Memory (Flash) | 128 KB |
| RAM | 16 KB |
| ولتاژ تغذیه | 3.0 V to 3.6 V |
| دمای کاری | -40C to +85C (I grade) |
| بسته‌بندی | 28-pin SPDIP (SP) |
| ADC Resolution | 12-bit |
| USB | USB 2.0 OTG, full speed |
| Programming Interface | ICSP (2-wire), in-circuit debug |
| نوع نصب | Through Hole |
| Packaging | Tube |
پیکربندی پین DSPIC33EP128MU502-I/SP
| پین 1 | MCLR — Master clear reset / ICSP programming voltage input |
| پین 2 | AN0/RB0/PGED1 — Analog input 0 / Port B / primary debug data |
| پین 3 | AN1/RB1/PGEC1 — Analog input 1 / Port B / primary debug clock |
| پین 4 | AN2/RB2 — Analog input 2 / Port B |
| پین 5 | AN3/RB3 — Analog input 3 / Port B |
| پین 6 | AN4/RB4 — Analog input 4 / Port B |
| پین 7 | VDD — Positive supply, 3.0 V to 3.6 V |
| پین 8 | VSS — Ground reference |
| پین 9 | OSC1/CLKI/RA2 — Oscillator crystal input / external clock input |
| پین 10 | OSC2/CLKO/RA3 — Oscillator crystal output / clock output |
| پین 11 | VCAP/VDDCORE — Internal core regulator stabilization capacitor (connect low-ESR capacitor to VSS) |
| پین 12 | RA4/RP4 — Port A / remappable peripheral pin |
| پین 13 | RA5/RP5 — Port A / remappable peripheral pin |
| پین 14 | VSS — Ground reference |
| پین 15 | RB5/RP6/SOSCI — Port B / remappable pin / secondary oscillator input |
| پین 16 | RB6/RP7/SOSCO — Port B / remappable pin / secondary oscillator output |
| پین 17 | RB7/RP8 — Port B / remappable peripheral pin |
| پین 18 | RB8/RP9 — Port B / remappable peripheral pin |
| پین 19 | RB9/RP10 — Port B / remappable peripheral pin |
| پین 20 | RB10/RP11 — Port B / remappable peripheral pin |
| پین 21 | RB11/RP12 — Port B / remappable peripheral pin |
| پین 22 | RB12/RP13/PGD2 — Port B / remappable pin / secondary debug data |
| پین 23 | RB13/RP14/PGC2 — Port B / remappable pin / secondary debug clock |
| پین 24 | VDD — Positive supply, 3.0 V to 3.6 V |
| پین 25 | RB14/RP15/PGD1 — Port B / remappable pin / primary ICSP data |
| پین 26 | RB15/RP16/PGC1 — Port B / remappable pin / primary ICSP clock |
| پین 27 | AVSS — Analog ground reference |
| پین 28 | AVDD — Analog positive supply |
کاربردهای معمول
DSPIC33EP128MU502-I/SP مناسب است برای 6 کاربردs: USB-Connected Industrial Instruments, Digital Power Supplies and PFC Converters, Brushless DC Motor Control, Embedded Audio and Signal Processing, Sensor Data Loggers and IoT Edge Nodes, Prototyping and Educational Systems.
USB-Connected Industrial Instruments
The DSPIC33EP128MU502-I/SP fits USB-connected instruments because it is one of the few DSCs combining full-speed USB 2.0 OTG with a 70 MIPS DSP engine in a through-hole package. Placed as the main controller, its USB OTG peripheral handles device/host roles for data logging and firmware field updates, while the hardware MAC accelerator executes FFT filtering on 12-bit ADC samples. The 128 KB Flash supports protocol stacks plus application code with headroom. Trade-off: the 3.0V to 3.6V supply requires a 3.3V regulator ahead of the part, and the VDDCORE capacitor is mandatory for stable core regulation.
پیشنهادی
Digital Power Supplies and PFC Converters
Digital power and PFC designs benefit from the MU502's deterministic 70 MIPS core and dual 40-bit accumulators, which execute voltage/current control loops at fixed cycle counts. The 12-bit ADC with multiple sample-and-hold circuits can sample input and output rails in the same cycle, critical for feed-forward compensation. PWM peripherals generate the switching waveforms while the DSP engine runs the compensator. Because switching converters inject noise, keep analog grounds separate per the datasheet AVSS/AVDD guidance. The 128 KB Flash accommodates compensation tables, soft-start ramps, and fault-logging code without external memory.
پیشنهادی
Brushless DC Motor Control
The MU502 supports BLDC control with its fast core, 12-bit ADC, and PWM generation, executing trapezoidal or FOC commutation loops in software at 70 MIPS. Sensorless back-EMF detection uses the ADC with hardware sample triggers synchronized to PWM events. The hardware 17x17 MAC accelerates Clarke/Park transforms. Note the trade-off: the dedicated motor-control sub-family (DSPIC33EP128MC502) provides complementary PWM outputs and fault inputs, so for high-current drives prefer the MC variant; the MU502 is best where motor control is combined with USB reporting or host connectivity in one chip.
پیشنهادی
Embedded Audio and Signal Processing
The DSP engine - 17x17 hardware multiplier, dual 40-bit accumulators, and modulo addressing - makes the MU502 effective for embedded audio filtering, AGC, and spectral analysis. The 12-bit ADC digitizes microphone or line-level signals after external anti-alias filtering, while processed output streams over USB OTG to a host or over SPI/I2C to a codec. Running filters at 70 MIPS leaves substantial cycle margin at typical 48 kHz sample rates. Budget RAM carefully: 16 KB limits buffer depths, so design filter block sizes around available X and Y data memory before committing to long convolution kernels.
پیشنهادی
Sensor Data Loggers and IoT Edge Nodes
As a data-logger controller, the MU502 pairs its 12-bit ADC with multiple sensor inputs and its USB OTG port for data offload and configuration, avoiding a separate USB bridge chip. The 128 KB Flash stores calibration tables and logging firmware; 16 KB RAM buffers sampled batches before transfer. The industrial -40C to +85C rating suits unconditioned environments. For battery-powered nodes, characterize the core regulator's VDDCORE capacitor leakage and consider the lower-power PIC16LF family for sleep-dominant designs - the dsPIC33EP targets compute-heavy, duty-cycled acquisition rather than nanoamp sleep budgets.
پیشنهادی
Prototyping and Educational Systems
The 28-pin SPDIP through-hole package makes the MU502 uniquely approachable for prototyping, breadboarding, and university labs - it sockets directly into 0.1-inch perforated boards without adapters. The full-speed USB OTG peripheral lets students build real HID or CDC devices, while the DSP engine teaches fixed-point signal processing on professional-grade hardware. Programming uses MPLAB SNAP or PICkit over two-wire ICSP with just MCLR, PGD, and PGC exposed. The industrial temperature grade means lab prototypes behave identically to production parts, and the -E extended-grade variant can be substituted without any design change when environmental testing is added.
پیشنهادی
خلاصه محصولات پیشنهادی
داده‌های مرجع مهندسی برای DSPIC33EP128MU502-I/SP — مقایسه، راهنمای طراحی و اطلاعات انطباق.
راهنمای انتخاب
مقایسه با جایگزین‌ها
| پارامتر | این محصول | DSPIC33EP128MU502-E/SP | DSPIC33EP128MU502-H/SP | DSPIC33EP128GP502-I/SP | DSPIC33EP128MC502-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 |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core / MIPS | dsPIC33E, 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS |
| Flash / RAM | 128 KB / 16 KB | 128 KB / 16 KB | 128 KB / 16 KB | 128 KB / 16 KB | 128 KB / 16 KB |
| USB OTG | Yes (full speed) | Yes (full speed) | Yes (full speed) | No | No |
| Operating Temperature | -40C to +85C | -40C to +125C | -40C to +150C | -40C to +85C | -40C to +85C |
| ADC Resolution | 12-bit | 12-bit | 12-bit | 12-bit | 12-bit |
| Distinguishing Peripheral | USB 2.0 OTG | USB 2.0 OTG (same die) | USB 2.0 OTG (same die) | General-purpose peripherals | Motor-control PWM module |
تفاوت‌های کلیدی
- USB 2.0 OTG on-chip (در مقابلDSPIC33EP128GP502-I/SP)
- Extended temperature drop-in options on the identical die (در مقابلDSPIC33EP128MU502-E/SP)
- Through-hole SPDIP package for a 70 MIPS DSC (در مقابلDSPIC33EP128MC502-I/SP (also available in SS/SO))
یادداشت‌های طراحی
The dsPIC33EP core includes an internal regulator; the VCAP/VDDCORE pin (pin 11 on SPDIP-28) must be tied to a low-ESR ceramic capacitor to ground. Omitting this capacitor or using a high-ESR part causes core-rail droop and intermittent brownout resets, especially at 70 MIPS where core current demand spikes. Keep the 3.3V main supply within 3.0V to 3.6V under all load transients and add 100 nF decoupling at both VDD pins (7, 24) plus AVDD (28).
Even in a through-hole design, keep the analog domain clean: route ADC input traces away from PWM and USB lines, and connect AVSS (pin 27) to a quiet star ground rather than sharing a long return path with switching loads. For socketed prototypes, note that DIP sockets add inductance that can degrade high-speed remappable pin (RPn) signal integrity; for USB full-speed operation, minimize stub length between the device and the connector.
Two frequent mistakes: (1) assuming the MU502's USB peripheral means a 5V-tolerant VBUS pin handling - the USB VBUS sensing must be implemented within the datasheet absolute maximum ratings, typically via a resistor divider on an ADC-capable pin; (2) mixing up -I, -E, and -H temperature suffixes during BOM entry - all three share the same footprint, so a wrong suffix passes DRC but can fail in the field at extreme temperatures. Verify the suffix on incoming parts and confirm RPn pin mappings in code against the current family datasheet before freezing layout.
اطلاعات انطباق
Compliance details were not present in the provided web data. Confirm RoHS/REACH status on the official Microchip product page or datasheet before procurement.
