DSPIC33EP128MU506-E/MR - 16-bit DSC 128KB Flash | Microchip
MPN: DSPIC33EP128MU506-E/MR ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.9 | $6.90 |
| 10 | $6.2 | $62.00 |
| 100 | $5.5 | $550.00 |
| 500 | $5 | $2,500.00 |
| 1,000 | $4.6 | $4,600.00 |
DSPIC33EP128MU506-E/MR Overview
A digital signal controller combines the computational architecture of a microcontroller with the DSP engine of a digital signal processor into a single chip. In the system hierarchy, the dsPIC33EP sits between general-purpose microcontrollers and dedicated DSPs, making it the power-management class of embedded processors: one device handles both real-time control loops and signal-processing tasks such as filters, transforms, and sensor fusion.
Key differentiators of this device include its high-speed dsPIC33E core, generous 128 KB Flash for complex control algorithms, the MU-series peripheral set that includes Full-Speed USB device support, and the extended -40C to +125C temperature range enabling deployment in harsh industrial environments. The QFN package provides excellent thermal performance and a compact footprint for space-constrained boards.
Architecturally, the dsPIC33EP family implements a modified Harvard pipeline with DSP multiply-accumulate instructions, allowing single-cycle MAC operations. Peripherals typical of the MU-series include high-speed PWM modules, multiple UART/SPI/I2C ports, ADC with simultaneous sampling capability, and USB, enabling closed-loop control of power converters and motor drives with integrated communications.
Typical applications include digital power supplies and power factor correction, brushless DC and PMSM motor control, USB-connected industrial sensors and instrumentation, and general embedded control where DSP filtering is required alongside conventional I/O.
Design consideration: the dsPIC33EP core requires an on-chip regulator bypass capacitor on the VCAP/VDDCORE pin; verify the exact value and layout recommendation in the Microchip datasheet, and budget GPIO carefully since 64 pins must serve both I/O and programming (ICSP) functions.
This page synthesizes verified distributor availability, drop-in same-package alternatives, pricing tiers, and practical design notes not found on the manufacturer product page alone. Pricing references are as of 2026-09-24.
Drop-in alternatives for DSPIC33EP128MU506-E/MR — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with DSPIC33EP128MU506-E/MR (same form factor and footprint) — differing in Operating Temperature, Core Architecture, Package, RoHS Status, USB Interface.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33EP128MU506-I/MR
✅ Drop-In✓ In Stock
$4.65 / Unit
View Datasheet →DSPIC33EP128MU506-H/MR
✅ Drop-In✓ In Stock
$4.65 / Unit
View Datasheet →DSPIC33EP256MU506-E/MR
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP64MU506-E/MR
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP128MU506-E/MR Maximum Ratings & Electrical Characteristics
| Core Architecture | 16-bit dsPIC33E DSC core |
| Flash Program Memory | 128 KB |
| Instruction Class | DSP-enhanced (single-cycle MAC) |
| Package Code | MR (64-pin QFN) |
| Package Type | QFN-64, Surface Mount |
| Operating Temperature | -40C to +125C (E grade) |
| Mounting Type | Surface Mount |
| USB Interface | Yes (MU-series, Full-Speed USB device) |
| Programming Interface | ICSP (In-Circuit Serial Programming) |
| RoHS Status | Compliant (per distributor listings) |
DSPIC33EP128MU506-E/MR qfn-64, surface mount Pin Configuration Guide
Pin configuration for DSPIC33EP128MU506-E/MR (qfn-64, surface mount package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for DSPIC33EP128MU506-E/MR.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33EP128MU506-E/MR is suitable for 6 applications: Digital Power Supplies and PFC, Brushless DC and PMSM Motor Control, USB-Connected Industrial Instruments, Lighting and Ballast Control, Embedded Sensing and IoT Edge Nodes, Automotive-Adjacent and Harsh Environment Control.
Digital Power Supplies and PFC
The DSPIC33EP128MU506-E/MR fits digital power conversion because its DSP-enhanced core executes the proportional-integral and predictive control loops required by switch-mode power supplies at high loop rates, while the 128 KB Flash holds compensator tables, soft-start state machines, and fault logging. In a typical topology, the ADC samples output voltage and inductor current each PWM cycle and the core updates the duty cycle of the high-speed PWM module in a closed loop, achieving response times unattainable with analog-only control. The extended -40C to +125C rating allows placement near hot switching stages, and USB support enables PC-based configuration and telemetry. The trade-off versus a dedicated digital power controller is higher software effort in exchange for single-chip flexibility across multiple product variants.
Recommended
Brushless DC and PMSM Motor Control
Field-oriented control of brushless DC and permanent-magnet synchronous motors demands fast multiply-accumulate computation, and the dsPIC33EP core in the DSPIC33EP128MU506-E/MR provides single-cycle MAC instructions that keep FOC loops running alongside commutation scheduling and protection logic. The 128 KB Flash is sufficient for sensorless observers, startup ramps, and CAN or UART fieldbus stacks in the same image. High-speed PWM modules drive three-phase inverters with dead-time control, while the ADC captures phase currents for the Clarke/Park transforms. The -E extended temperature grade survives drive-enclosure ambients. Compared with the MC-series dsPIC33EP128MC506, the MU506 adds USB for commissioning tools; compared with analog control, it delivers adaptability across motor sizes in firmware.
Recommended
USB-Connected Industrial Instruments
The Full-Speed USB peripheral of the MU-series makes the DSPIC33EP128MU506-E/MR a strong fit for bench instruments, data loggers, and industrial sensors that enumerate as USB devices. The DSP engine preprocesses sensor streams (FIR/IIR filtering, FFT binning) before streaming over USB, offloading the host and reducing data bandwidth. The 128 KB Flash accommodates the USB stack, device classes, calibration tables, and application logic simultaneously. Extended -40C to +125C operation suits fanless industrial enclosures. In a typical design the ADC samples front-end signals, the core conditions them, and USB CDC or HID transfers results to a PC. The QFN-64 package conserves board area relative to TQFP equivalents, at the cost of harder visual inspection during assembly.
Recommended
Lighting and Ballast Control
Digital HID and LED ballast control benefits from the DSPIC33EP128MU506-E/MR's combination of high-resolution PWM, fast ADC, and DSP filtering for current-shaping algorithms that meet power factor and flicker requirements. The core runs resonant-converter control loops (LLC, phase-shifted full bridge) with frequency and phase modulation computed per cycle, while the 128 KB Flash stores lamp profiles, dimming curves, and fault diagnostics. USB enables field firmware updates and configuration from a laptop on the production floor. The extended temperature rating tolerates luminaire driver enclosures that routinely exceed +85C ambient. Compared with a fixed-function ballast controller, this DSC allows one PCB design to serve multiple lamp wattages by changing firmware only.
Recommended
Embedded Sensing and IoT Edge Nodes
For sensor nodes that require local signal processing, the DSPIC33EP128MU506-E/MR executes vibration analysis, power monitoring, or acoustic classification on-chip using its DSP MAC engine, sending only processed features upstream. The 128 KB Flash holds sampling schedulers, filter banks, and communication stacks in one binary, and multiple UART/SPI/I2C ports (MU-series peripheral set) connect to sensors and radios without external bridges. USB provides a convenient service interface for commissioning in the field. The -40C to +125C range covers outdoor and industrial deployments. The trade-off versus a pure connectivity MCU is higher unit cost, justified when edge DSP reduces radio traffic or cloud compute. Verify peripheral counts in the Microchip datasheet for your exact sensor mix.
Recommended
Automotive-Adjacent and Harsh Environment Control
The -E extended temperature grade of the DSPIC33EP128MU506-E/MR makes it appropriate for harsh-environment control units adjacent to automotive and heavy-equipment platforms, such as pump controllers, actuator drivers, and auxiliary HVAC logic, where ambient temperatures approach +125C. The DSP core handles sensor linearization and control loops, high-speed PWM drives actuators, and USB or UART links provide service-tool access. Microchip's -H grade (DSPIC33EP128MU506-H/MR) offers a higher-reliability option in the identical package when quality-flow requirements escalate. Compared with automotive-qualified MCUs, this DSC reduces cost and development effort for non-safety-critical functions; confirm AEC-Q qualification requirements independently, since this listing does not state AEC-Q100 status.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33EP128MU506-E/MR — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33EP128MU506-I/MR | DSPIC33EP128MU506-H/MR | DSPIC33EP256MU506-E/MR | DSPIC33EP64MU506-E/MR |
|---|---|---|---|---|---|
| Package | QFN-64 (MR) | QFN-64 (MR) - same | QFN-64 (MR) - same | QFN-64 (MR) - same | QFN-64 (MR) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 128 KB | 128 KB | 128 KB | 256 KB | 64 KB |
| Operating Temperature | -40C to +125C (E grade) | -40C to +85C (I grade) | -40C to +125C (H grade) | -40C to +125C (E grade) | -40C to +125C (E grade) |
| Core | 16-bit dsPIC33E DSC | 16-bit dsPIC33E DSC | 16-bit dsPIC33E DSC | 16-bit dsPIC33E DSC | 16-bit dsPIC33E DSC |
| USB Peripheral | Yes (MU-series) | Yes (MU-series) | Yes (MU-series) | Yes (MU-series) | Yes (MU-series) |
| Reliability Grade | Standard (E) | Standard (I) | High-reliability (H) | Standard (E) | Standard (E) |
| Lifecycle Status | Active | Active | Active | Active | Active |
Key Differentiators
- Extended temperature operation (vs DSPIC33EP128MU506-I/MR)
- High-reliability upgrade path (vs DSPIC33EP128MU506-H/MR)
- Integrated Full-Speed USB (vs DSPIC33EP128MC506 family)
- Trade-off: memory sizing flexibility vs unit cost (vs DSPIC33EP256MU506-E/MR)
Design Notes
The dsPIC33EP core integrates an on-chip regulator whose output pin (VCAP/VDDCORE) requires an external low-ESR bypass capacitor; the exact capacitance value and ESR window are specified in the Microchip dsPIC33EP family datasheet and must not be substituted with a generic value. Decouple each VDD pin pair with 0.1 uF ceramic close to the pin plus one bulk 4.7-10 uF capacitor per supply domain. Estimated: with a 3.3 V rail and typical 60-70 mA core current, supply dissipation is only about 0.2 W, so no heatsinking is needed for the QFN-64; thermal design effort should focus on PCB copper for adjacent power components instead.
The /MR QFN-64 package has no external leads; solder-joint inspection requires X-ray or angled AOI, and rework is more difficult than TQFP. If your assembly line lacks QFN capability, use the pin-equivalent TQFP-64 sibling DSPIC33EP128MU506-E/PT during prototyping, but note the footprints differ, so design the production footprint for the intended package from day one. Provide a well-placed ICSP header (MCLR, PGD, PGC, VDD, GND) within 15 cm of the device and keep programming traces short to ensure reliable in-circuit debugging with Microchip tools.
Do not confuse package codes: /MR is QFN-64 while /PT is TQFP-64 - they are not footprint-compatible, a frequent ordering mistake when substituting within this family. Also verify temperature suffix requirements at BOM level: substituting the -I grade (85C max) for this -E part (125C max) silently reduces thermal margin. Finally, ADC channel assignments are multiplexed with digital I/O on a 64-pin device; confirm your required pin map against the datasheet pin diagrams before locking the PCB, since ANx remapping limits are family-specific.
Compliance Information
RoHS compliance indicated by distributor listings (full-electronic.com RoHS status field). REACH, halogen-free, and conflict-minerals status not stated in provided data.
