DSPIC33EP128MU504-E/MV - 16-bit DSC 128KB Flash USB CAN | Microchip
MPN: DSPIC33EP128MU504-E/MV ✓ Active| Qty | Unit Price | Extended |
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DSPIC33EP128MU504-E/MV Overview
A digital signal controller combines the computational capability of a digital signal processor with the peripheral integration and control architecture of a microcontroller. Within the power-management hierarchy, the dsPIC33E family sits above basic MCUs and below dedicated DSPs, offering DSP engine instructions (MAC, DSP multiply-accumulate) alongside general-purpose embedded control peripherals, making it a single-chip solution for real-time control systems.
Key features of the MU504 variant include its communication-rich peripheral set: full-speed USB with OTG support, CAN 2.0B for industrial networking, up to three 8-bit/12-bit ADC modules, three analog comparators with op amps, and advanced motor control PWM (MCPWM) with quadrature encoder interface. The 70 MIPS core supports the DSP instruction set, and the device includes 1 KB of dedicated Data Flash (EEPROM emulation) as listed in distributor data.
Architecturally, the dsPIC33E core uses a modified Harvard pipeline with 16-bit instructions and 24-bit wide program memory words, delivering deterministic single-cycle DSP MAC operations. Code-dense instructions and an extensive peripheral-trigger system allow peripherals such as the PWM to trigger ADC conversions without CPU intervention, critical for high-frequency motor control loops.
Typical applications include digital power supplies, precision brushless DC and PMSM motor control, USB-connected industrial instruments, and CAN-networked sensor nodes. The MU peripheral mix (USB + CAN + MCPWM + op amps) fits multi-protocol control nodes specifically.
Design consideration: the UQFN-48 6x6 package exposes a thermal pad beneath the die; a solid ground plane and proper via stitching under the pad are required for thermal dissipation and low-impedance grounding.
This page synthesizes distributor listings, drop-in same-family alternatives, and practical design guidance not found in the manufacturer datasheet.
Drop-in alternatives for DSPIC33EP128MU504-E/MV — 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 DSPIC33EP128MU504-E/MV (same form factor and footprint) — differing in Package, Core Architecture, Motor Control PWM, Operating Temperature, USB Interface.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33EP128MU504-I/MV
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$4.4 / Unit
View Datasheet →DSPIC33EP128MU804-E/MV
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP256MU504-E/MV
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP128GP504-E/MV
✅ Drop-In✓ In Stock
$4.3 / Unit
View Datasheet →DSPIC33EP128MC504T-I/MV
✅ Drop-In✓ In Stock
$3.69 / Unit
View Datasheet →DSPIC33EP128MU204T-I/PT
✅ Drop-In✓ In Stock
$3.32 / Unit
View Datasheet →DSPIC33EP128MU504-E/MV Maximum Ratings & Electrical Characteristics
| Core | dsPIC33E 16-bit DSC |
| Program Memory (Flash) | 128 KB (43K x 24) |
| RAM | 16 KB |
| Data Flash (EEPROM emulation) | 1 KB |
| Maximum Core Speed | 70 MIPS |
| ADC Resolution | 12-bit |
| USB | Yes (USB with OTG) |
| CAN | Yes (CAN 2.0B) |
| Op Amps | 3 |
| Motor Control PWM | MCPWM |
| Quadrature Encoder Interface | QEI |
| Package | 48-pin UQFN (6x6 mm) |
| Operating Temperature | -40C to +125C (Extended, E suffix) |
| Mounting Type | Surface Mount |
| Product Family | dsPIC33EP128MU504 (MU general-purpose/USB group) |
DSPIC33EP128MU504-E/MV 48-pin uqfn (6x6 mm) Pin Configuration Guide
Pin configuration for DSPIC33EP128MU504-E/MV (48-pin uqfn (6x6 mm) 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 DSPIC33EP128MU504-E/MV.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33EP128MU504-E/MV is suitable for 6 applications: Digital Power Supplies, Brushless DC and PMSM Motor Control, USB-Connected Industrial Instruments, CAN-Networked Sensor and Control Nodes, Analog Signal Processing and Sensing Front Ends, Embedded Control and Robotics.
Digital Power Supplies
The DSPIC33EP128MU504-E/MV fits digitally controlled AC/DC and DC/DC converters where the 70 MIPS core executes control loops at high PWM frequencies. Its MCPWM module generates complementary outputs with dead-time insertion, while the 12-bit ADC samples voltage and current feedback synchronously with PWM events through the peripheral trigger system, minimizing loop latency. The three integrated op amps can condition shunt-current signals before ADC conversion, reducing external component count in multi-phase converters. In a typical topology the DSC replaces analog compensation with firmware PID control, enabling configurable soft-start, adaptive dead-time, and fault logging. The extended -40C to +125C E-grade supports power supplies mounted near hot components, and CAN connectivity enables digital telemetry in stackable power-shelf architectures.
Recommended
Brushless DC and PMSM Motor Control
The DSPIC33EP128MU504-E/MV is suited to sensorless and encoder-based BLDC/PMSM drives. The MCPWM peripheral produces three-phase complementary PWM with hardware dead time, the QEI interface decodes quadrature encoder feedback directly, and the 12-bit ADC captures phase currents synchronized to PWM centers for field-oriented control. The three on-chip op amps amplify low-level shunt signals, eliminating external instrumentation amplifiers in cost-sensitive drives. The 70 MIPS DSP core executes Clarke/Park transforms and PI loops with single-cycle MAC instructions, sustaining 20 kHz+ current loop rates. Firmware-based field-weakening and anti-windup are practical at this performance level. The extended-temperature E-grade tolerates drive-enclosure environments, while CAN allows the controller to join vehicle or industrial network stacks without an external CAN controller.
Recommended
USB-Connected Industrial Instruments
The DSPIC33EP128MU504-E/MV integrates full-speed USB with OTG, allowing test fixtures, data loggers, and bench instruments to communicate with PC host software without a separate USB interface chip. Meanwhile CAN links the device to factory networks, making the MU504 a natural protocol gateway that translates between USB host commands and CAN fieldbus nodes. The 128 KB Flash accommodates USB stack, protocol handlers, and application logic; 16 KB RAM buffers streaming measurement data. The 12-bit ADC digitizes sensor inputs up to 12-bit resolution for acquisition channels, and firmware-driven command parsing runs comfortably within the 70 MIPS budget. Designers should budget RAM carefully when USB endpoint buffering and logging buffers coexist, and use DMA-capable ADC operation to keep CPU load low during continuous streaming.
Recommended
CAN-Networked Sensor and Control Nodes
Industrial and automotive-adjacent nodes benefit from the DSPIC33EP128MU504-E/MV CAN 2.0B controller combined with the extended -40C to +125C E temperature grade. The DSC samples analog sensors through the 12-bit ADC, applies filtering or DSP post-processing with the DSP MAC engine, and publishes results on the CAN bus - all in one chip. Remappable Peripheral Pin Select (PPS) lets designers assign UART/SPI interfaces to optimal physical pins in dense layouts, and the MCPWM can drive local actuators or fans from the same node. The 1 KB Data Flash stores calibration constants and node identity across power cycles without external EEPROM. CAN bit timing up to 1 Mbps per the 2.0B specification supports deterministic messaging in distributed control systems such as conveyor monitoring and building automation.
Recommended
Analog Signal Processing and Sensing Front Ends
The three on-chip op amps of the DSPIC33EP128MU504-E/MV make it effective in sensor front ends that need amplification, filtering, and digital post-processing. The op amps can be configured via firmware for gain selection and routed internally to the 12-bit ADC or comparators, enabling signal chains such as strain-gauge bridges, thermocouple conditioning, or microphone preamps with minimal external parts. The 70 MIPS DSP engine then applies FIR/IIR filtering, FFT-based analysis, or threshold detection in firmware, with the 16 KB RAM holding sample buffers for block-based DSP. Battery-powered variants of such instruments benefit from the dsPIC33E power-management features and the ability to gate clocks to unused peripherals. The extended-temperature grade suits field-deployed sensing equipment exposed to outdoor or engine-bay conditions.
Recommended
Embedded Control and Robotics
Robot joint controllers and motion subsystems combine nearly every peripheral of the DSPIC33EP128MU504-E/MV: MCPWM drives motor bridges, QEI reads joint encoders, the 12-bit ADC reads potentiometers and current shunts, CAN coordinates multi-axis communication, and USB provides configuration/debug links. The 70 MIPS core runs cascaded position/velocity/current loops concurrently, and DSP MAC instructions accelerate feed-forward compensation. The Peripheral Trigger Generator chains PWM events to ADC sampling for deterministic loop timing without CPU intervention - critical for stable servo behavior. The 48-pin UQFN 6x6 mm footprint fits dense multi-axis PCBs, and the -40C to +125C E grade covers industrial robot arm interiors near heat sources. Designers should reserve Flash headroom for field-updatable control firmware delivered over the CAN or USB interface.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33EP128MU504-E/MV — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33EP128MU504-I/MV | DSPIC33EP128GP504-E/MV | DSPIC33EP128MC504T-I/MV | DSPIC33EP128MU204T-I/PT |
|---|---|---|---|---|---|
| Package | UQFN-48 (6x6 mm) | UQFN-48 (6x6 mm) - same | UQFN-48 (6x6 mm) - same | UQFN-48 (6x6 mm) - same | TQFP-44 (PT) - different |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Program Memory | 128 KB (43K x 24) | 128 KB | 128 KB (43K x 24) | 128 KB | 128 KB |
| Core Speed | 70 MIPS | 70 MIPS | 60-70 MIPS | 70 MIPS | 70 MIPS |
| USB | Yes (OTG) | Yes (OTG) | No | No (MC variant) | Yes (OTG) |
| CAN | Yes (CAN 2.0B) | Yes | Yes (per GP family features) | Yes | Yes |
| Operating Temperature | -40C to +125C (E grade) | -40C to +85C (I grade) | -40C to +125C (E grade) | -40C to +85C (I grade) | -40C to +85C (I grade) |
Key Differentiators
- USB OTG plus CAN in one DSC (vs DSPIC33EP128GP504-E/MV)
- Extended temperature grade available (vs DSPIC33EP128MC504T-I/MV)
- Integrated analog conditioning (vs DSPIC33EP128MU204T-I/PT)
- Trade-off: motor-control specialization (vs DSPIC33EP128MC504T-I/MV)
Design Notes
The 48-pin UQFN (6x6 mm) MV package has a large exposed thermal pad on the underside. Connect this pad to a solid ground plane with an array of stitched vias directly beneath the die; this provides both heat removal for the -40C to +125C E-grade operation near +125C and a low-inductance ground reference for the high-speed 70 MIPS core and USB PHY. Standard Microchip UQFN landing-pattern recommendations from the datasheet should be followed for reliable reflow. Stencil apertures of roughly 50-70% coverage over the pad avoid excessive solder bleed.
Provide independent, well-decoupled supplies for VDD core/IO and the USB VBUS domain. Place 100 nF ceramic decoupling capacitors at every VDD/VSS pin pair, as close to the pins as the UQFN land pattern allows, plus bulk capacitance near the supply entry. When USB OTG is used, follow the Microchip USB hardware design guidelines for VBUS sensing and 5V protection since VBUS may be sourced or sunk by the device in host/OTG roles. Verify peak current demand at 70 MIPS plus USB and CAN transceivers against the chosen LDO or buck regulator rating.
dsPIC33E peripherals are largely remappable through Peripheral Pin Select (PPS); forgetting to lock PPS registers (writing the required unlock sequence) is the most common bring-up failure. Additionally, analog-capable pins default to analog mode after reset - they must be explicitly switched to digital for use as GPIO or PPS targets. When ADC and op amps share pins, configure gain and routing in the correct order per the ADC reference manual section. Always check the device errata sheet on Microchip's product page before tape-out, as early dsPIC33EP silicon revisions had documented peripheral errata.
At 70 MIPS with fast PWM edges from the MCPWM module, gate-driver traces and the DSC's oscillator circuit are primary EMI sources. Route PWM outputs away from the crystal/oscillator pins, use series termination resistors on long PWM traces, and keep the CAN and USB differential pairs length-matched and referenced to a continuous ground plane. On the UQFN-48, group decoupling by function so high-di/dt PWM switching currents do not share return paths with the sensitive 12-bit ADC front end.
Compliance Information
Compliance declarations were not captured in the verified web data as of 2026-09-24. Confirm RoHS/REACH status on Microchip's official product page or Mouser compliance tab before procurement.
