DSPIC33EP128MU502-H/SP - 16-bit DSC 128KB Flash 70MIPS | Microchip
MPN: DSPIC33EP128MU502-H/SP ✓ Hoạt độngDSPIC33EP128MU502-H/SP Tóm tắt
A digital signal controller combines the computational architecture of a digital signal processor with the peripherals and ease of use of a microcontroller. DSCs sit within the broader embedded processor hierarchy - microcontroller, then DSC, then system-on-chip - offering single-cycle MAC and DSP instructions while retaining conventional MCU peripherals such as UART, SPI, I2C, PWM, and CAN.
Key features of this device include the high-performance 16-bit dsPIC33E core rated at 70 MIPS, 128 KB of self-programmable Flash with ECC, 16 KB of SRAM, dual 12-bit ADC modules, multiple 16-bit timers, and communication peripherals including USB and CAN for the MU (USB/media) family variant. The H temperature grade supports extended operating conditions, and the SPDIP package suits prototyping, legacy through-hole boards, and industrial control retrofits.
The dsPIC33EP architecture uses a modified Harvard pipeline with deterministic interrupt latency, hardware DSP engine (single-cycle multiply-accumulate), and Peripheral Pin Select (PPS) for flexible I/O mapping. Code development is supported by Microchip MPLAB X IDE and the XC16 compiler, with drop-in code compatibility across the dsPIC33EP family.
Typical applications include industrial motor control, digital power supplies (switching converters with MC PWM), USB-connected sensor hubs, audio processing nodes, and general-purpose embedded control requiring DSP-class math.
A key design consideration: the dsPIC33EP core requires a VCAP/VDDCORE stabilization capacitor on the internal regulator pin - omitting it is a common bring-up failure. Note this part is listed as discontinued at DigiKey; pricing is RFQ-based from independent distributors.
This page synthesizes distributor availability, drop-in family alternatives, pinout guidance, and practical design notes not found in the manufacturer datasheet, as of 2026-09-24.
Bộ thay thế dễ dàng lắp đặt cho DSPIC33EP128MU502-H/SP — 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 DSPIC33EP128MU502-H/SP (cùng hình factor và footprint) — khác nhau ở Package, Core, Mounting Type, ADC Resolution, Operating Temperature.
DSPIC33EP128MU502-E/SP
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →DSPIC33EP64MU502-H/SP
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
DSPIC33EP64MU502-I/SP
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
DSPIC33EP128GP502-I/SP
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
DSPIC33EP128MC502-I/SP
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →DSPIC33EP128MU502-H/SP Tỷ lệ tối đa & tính chất điện
| Core | 16-bit dsPIC33E |
| Core Speed | 70 MIPS |
| Flash Program Memory | 128 KB |
| RAM | 16 KB |
| Data Flash (EEPROM) | 1 KB |
| ADC Resolution | 12-bit |
| Hộp | 28-pin SPDIP (0.300 in) |
| Kiểu lắp đặt | Through Hole |
| Packaging | Tube |
| Connectivity Peripherals | UART, SPI, I2C, CAN, USB |
| Analog Peripherals | 12-bit ADC, 3x Op-Amp, CTMU |
| Motor Control Peripherals | MC PWM, QEI, PTG |
| Operating Voltage | 3.0 V to 3.6 V |
| Oscillator Type | Internal + External (OSC1/OSC2) |
Cấu hình chân DSPIC33EP128MU502-H/SP
| Chân 1 | MCLR/VPP/RE3 — Master clear reset and programming voltage input |
| Chân 2 | AN0/VREF+/CN2B/RB0 — Analog input 0 / positive voltage reference |
| Chân 3 | AN1/VREF-/CN3B/RB1 — Analog input 1 / negative voltage reference |
| Chân 4 | AN2/SS1/CN4B/RB2 — Analog input 2 / SPI slave select |
| Chân 5 | AN3/C1IN+/INDAC/CN5B/RB3 — Analog input 3 / comparator input |
| Chân 6 | AN4/C1IN-/CN6B/RB4 — Analog input 4 / comparator inverting input |
| Chân 7 | VDD — Positive supply (3.0 V to 3.6 V) |
| Chân 8 | VSS — Ground reference |
| Chân 9 | OSC1/CLKI/CN7B/RA2 — Oscillator crystal input / external clock input |
| Chân 10 | OSC2/CLKO/CN8B/RA3 — Oscillator crystal output / clock output |
| Chân 11 | VCAP/VDDCORE — Internal core regulator stabilization capacitor |
| Chân 12 | RP15/RD6 — Remappable digital I/O (verify RPx mapping in datasheet) |
| Chân 13 | RP14/RD5 — Remappable digital I/O (verify RPx mapping in datasheet) |
| Chân 14 | RP13/RD4 — Remappable digital I/O (verify RPx mapping in datasheet) |
| Chân 15 | RP12/RD3 — Remappable digital I/O (verify RPx mapping in datasheet) |
| Chân 16 | RP11/RD2 — Remappable digital I/O (verify RPx mapping in datasheet) |
| Chân 17 | RP10/RD1 — Remappable digital I/O (verify RPx mapping in datasheet) |
| Chân 18 | RP9/RD0 — Remappable digital I/O (verify RPx mapping in datasheet) |
| Chân 19 | RP26/RG7 — Remappable digital I/O (verify RPx mapping in datasheet) |
| Chân 20 | RP24/RG6 — Remappable digital I/O (verify RPx mapping in datasheet) |
| Chân 21 | RP23/RF4 — Remappable digital I/O (verify RPx mapping in datasheet) |
| Chân 22 | RP22/RF5 — Remappable digital I/O (verify RPx mapping in datasheet) |
| Chân 23 | RP21/RF2 — Remappable digital I/O / UART/CAN mapping (verify in datasheet) |
| Chân 24 | RP20/RF3 — Remappable digital I/O (verify RPx mapping in datasheet) |
| Chân 25 | RP19/RF1 — Remappable digital I/O (verify RPx mapping in datasheet) |
| Chân 26 | RP18/RF0 — Remappable digital I/O (verify RPx mapping in datasheet) |
| Chân 27 | RP17/RF13 — Remappable digital I/O (verify RPx mapping in datasheet) |
| Chân 28 | VDD — Positive supply |
Ứng dụng tiêu biểu
DSPIC33EP128MU502-H/SP phù hợp cho 6 Áp dụngs: Industrial Motor Control, USB-Connected Sensor Hubs, Digital Power Supplies, Audio Signal Processing Nodes, Legacy Through-Hole Board Retrofits, Embedded Test and Measurement Instruments.
Industrial Motor Control
The DSPIC33EP128MU502-H/SP fits motor control because it combines 70 MIPS DSP throughput (enough for single-shunt FOC loops at 10-20 kHz PWM rates) with dedicated MC PWM modules offering complementary outputs, dead-time insertion, and fault inputs, plus a QEI for position feedback. The internal 12-bit ADC samples phase currents synchronously with PWM triggers, and the 3 on-chip op-amps can amplify shunt voltages without external amplifiers, reducing BOM cost. Typical topology: the DSC drives a 3-phase inverter gate-driver stage, sampling current each PWM cycle; the PTG automates ADC-PWM triggering for low CPU overhead. The through-hole SPDIP package also simplifies prototyping of drive boards.
Được đề xuất
USB-Connected Sensor Hubs
The MU-family USB peripheral on the DSPIC33EP128MU502 makes it a natural USB device-side controller for sensor aggregation nodes. With 16 KB RAM, the device buffers multiple ADC channels at 12-bit resolution while servicing USB bulk transfers, and the 70 MIPS core applies filtering (IIR/FIR via the DSP engine's single-cycle MAC) before upload. PPS (Peripheral Pin Select) lets designers route UART/SPI streams from external sensors to any free RP pin, easing board layout. In a typical design the part enumerates as a USB CDC device, streaming calibrated telemetry; the 128 KB Flash holds both USB stack and DSP processing code with room to spare.
Được đề xuất
Digital Power Supplies
For digitally controlled AC/DC and DC/DC converters, the DSPIC33EP128MU502 provides high-resolution MC PWM outputs, fast 12-bit ADC triggering, and DSP bandwidth for control loops (voltage-mode, current-mode, or average-current control) at switching frequencies from 100 kHz to 1 MHz with appropriate loop design. The CTMU supports precise measurements, and the deterministic 70 MIPS core executes compensator equations within one PWM period. The through-hole 28-SP package suits bench power-supply prototypes and educational digital-power platforms; production high-density designs often migrate to the same code on smaller SMD siblings without firmware changes.
Được đề xuất
Audio Signal Processing Nodes
The MU (USB/media) variant targets audio applications: the 70 MIPS core with DSP instruction set implements filters, mixers, and codec preprocessing, while the USB peripheral handles audio streaming classes to a host PC. With 16 KB RAM, delay lines and multi-band filter state variables fit comfortably, and the 128 KB Flash retains room for a USB audio stack. On-chip op-amps can condition microphone or line-level inputs. In practice the DSC sits between an I2S/UART-connected codec and the USB host, performing room equalization or echo cancellation; the DSP engine executes biquad sections in a few cycles each, leaving margin for control tasks.
Được đề xuất
Legacy Through-Hole Board Retrofits
The 28-pin SPDIP (0.300 in) through-hole package makes the DSPIC33EP128MU502-H/SP uniquely valuable for retrofitting older industrial equipment designed around DIP microcontrollers. It drops into standard 0.6-inch-wide DIP-28 sockets, allowing performance upgrades (70 MIPS, DSP math, USB/CAN) without PCB respins. PPS remapping lets the firmware adapt to existing board wiring rather than forcing trace changes. Given the part's mixed authorized/independent availability, retrofitters should secure lifetime-buy quantities with verified date codes; the pin-compatible E/SP and 64MU502 variants provide ongoing sourcing flexibility for the same socket.
Được đề xuất
Embedded Test and Measurement Instruments
In handheld and bench instruments, the DSPIC33EP128MU502-H/SP performs ADC acquisition (12-bit, multiple channels), DSP-based measurement math (RMS, FFT windowing via single-cycle MAC), and USB data upload to a PC host. The 16 KB RAM supports waveform capture buffers of thousands of samples at 12-bit resolution, while the CTMU provides precision time and charge measurement functions for capacitance or time-domain measurements. The deterministic interrupt latency ensures accurate trigger timing. The through-hole package and 3.3 V operation simplify battery-powered instrument design, and the 128 KB Flash accommodates menu-driven UI firmware alongside measurement routines.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho DSPIC33EP128MU502-H/SP — 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 | DSPIC33EP128MU502-E/SP | DSPIC33EP64MU502-H/SP | DSPIC33EP128GP502-I/SP | DSPIC33EP128MC502-I/SP |
|---|---|---|---|---|---|
| Package | 28-pin SPDIP (0.300 in) | 28-pin SPDIP - same | 28-pin SPDIP - same | 28-pin SPDIP - same | 28-pin SPDIP - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core / Speed | 16-bit dsPIC33E, 70 MIPS | 16-bit dsPIC33E, 70 MIPS | 16-bit dsPIC33E, 70 MIPS | 16-bit dsPIC33E, 70 MIPS | 16-bit dsPIC33E, 70 MIPS |
| Flash Program Memory | 128 KB | 128 KB | 64 KB (-50%) | 128 KB | 128 KB |
| USB Peripheral | Yes (MU media variant) | Yes | Yes | No (GP variant) | No (MC variant) |
| ADC | 12-bit | 12-bit | 12-bit | 12-bit | 12-bit |
| Temperature Grade | H (extended/high temp) | E (extended, -40C to +125C) | H | I (industrial, -40C to +85C) | I (industrial) |
Bảo phân biệt quan trọng
- USB + media peripheral set in a 28-pin DIP (vsDSPIC33EP128GP502-I/SP)
- Double the program memory of the 64 KB sibling (vsDSPIC33EP64MU502-H/SP)
- Extended high-temperature grade availability (vsDSPIC33EP128MC502-I/SP)
Ghi chú thiết kế
The dsPIC33EP core regulator requires a low-ESR capacitor (nominally 10 uF tantalum/ceramic plus a 0.1 uF ceramic in parallel) on the VCAP/VDDCORE pin, pin 11, placed within a few millimeters of the pin. Omitting or undersizing this capacitor causes erratic operation, brown-out resets, or failure to program. Decouple each VDD pin with 0.1 uF ceramic close to the pin, and keep VSS connections low-impedance. Per Microchip hardware design guidelines, avoid routing noisy PWM return currents under the VCAP node.
Because the SPDIP package is through-hole, use a clean ground grid or ground pour on the solder side and place the 0.1 uF VDD decouplers directly at pins 7 and 28. When using the on-chip op-amps or ADC, route analog inputs away from PWM and CAN traces; the AN0-AN4 pins (2-6) share proximity with remappable digital pins, so configure unused digital neighbors to output-low or input with weak pull-up to reduce crosstalk. Reserve space for a 2x5 ICSP header wired to MCLR, PGD, and PGC for in-circuit programming.
Common bring-up failures: (1) MCLR left floating - always fit a 10 kOhm pull-up to VDD; (2) forgetting that PPS (Peripheral Pin Select) must map UART/SPI/PWM to RP pins in software before the peripherals function; (3) exceeding 3.6 V absolute maximum on VDD when interfacing 5 V logic - use level shifters or series resistors with clamping. Additionally, this exact suffix is discontinued at DigiKey; for new production designs, verify the E/SP or I-temp variants' availability and qualify them early.
Thông tin tuân thủ
Compliance data not explicitly stated in verified web data for this exact suffix; modern dsPIC33EP production is typically lead-free/RoHS-compliant but must be confirmed via Microchip Certificate of Conformance for this ordering code.
