DSPIC33EP128MU204T-I/MV - 16-bit DSC 128KB Flash | Microchip
MPN: DSPIC33EP128MU204T-I/MV ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.9 | $6.90 |
| 10 | $6.21 | $62.10 |
| 100 | $5.52 | $552.00 |
| 500 | $4.97 | $2,485.00 |
| 1,000 | $4.48 | $4,480.00 |
DSPIC33EP128MU204T-I/MV Overview
A Digital Signal Controller combines the computational architecture of a Digital Signal Processor (DSP) with the peripheral set and ease of use of a microcontroller (MCU). In the product hierarchy, the dsPIC33EP family sits under the dsPIC33E family of DSCs, under Microchip's 16-bit architecture portfolio, and ultimately under the broader category of embedded processors. DSCs are used where a control loop must execute fast multiply-accumulate (MAC) operations - such as FOC motor control, digital power conversion, and digital audio processing - while still managing general-purpose I/O and communication peripherals.
Key features of the DSPIC33EP128MU204 include a high-performance 16-bit DSP core, 128 KB of self-programmable Flash for code and data, 16 KB of on-chip RAM for control-loop state variables and buffers, and a 12-bit ADC for analog sensing. The MU (USB) peripheral variant of the dsPIC33EP x04 family integrates USB device support, distinguishing it from the MC (motor control) and GP (general purpose) variants that share the same pinout and package. Industrial (-40C to +85C) temperature grading and the /MV 44-lead TQFP package make the part suited to compact, cost-sensitive embedded boards.
Architecturally, the dsPIC33EP core executes from Flash with a modified Harvard bus structure that supports single-cycle MAC and dual data fetches - the hallmark of DSP arithmetic. This enables deterministic execution of digital filters, PID compensators, and transformation routines used in motor and power control.
Typical applications include USB-connected embedded devices, digital power supplies, sensor conditioning and data acquisition, and general motor control boards that also require USB communication. The 128 KB Flash accommodates protocol stacks plus control firmware without external memory.
Design consideration: verify USB timing budgets and ADC sampling sequences early in the firmware design; the shared peripheral resources of the MU variant trade some motor-control-specific peripherals for USB.
This page synthesizes distributor inventory data, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, with pricing referenced as of 2026-09-24.
Drop-in alternatives for DSPIC33EP128MU204T-I/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 DSPIC33EP128MU204T-I/MV (same form factor and footprint) — differing in Core Architecture, Package.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33EP128MC204T-I/MV
✅ Drop-In✓ In Stock
$3.65 / Unit
View Datasheet →DSPIC33EP256MU204T-I/MV
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP512MU204T-I/MV
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP128MU204T-I/MV Maximum Ratings & Electrical Characteristics
| Core Architecture | 16-bit dsPIC33E DSC core |
| Program Memory (Flash) | 128 KB |
| RAM | 16 KB |
| ADC Resolution | 12-bit |
| Product Family | dsPIC33EP128MU204 (MU / USB variant) |
| Product Type | Digital Signal Controller (DSC) |
| Package | 44-pin TQFP (/MV) |
| Mounting Type | Surface Mount |
| Operating Temperature | -40C to +85C (I grade) |
| Supply Voltage Range | 3.0 V to 3.6 V |
| Max Core Throughput | 70 MIPS |
| USB Interface | USB 2.0 full-speed device |
| RoHS Status | Compliant |
DSPIC33EP128MU204T-I/MV 44-pin tqfp (/mv) Pin Configuration Guide
Pin configuration for DSPIC33EP128MU204T-I/MV (44-pin tqfp (/mv) 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 DSPIC33EP128MU204T-I/MV.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33EP128MU204T-I/MV is suitable for 6 applications: USB-Connected Data Acquisition, Digital Power Conversion, Sensor Conditioning and Signal Processing, Embedded Motor Control with USB Telemetry, Portable and Handheld Instruments, Industrial Control and Automation Nodes.
USB-Connected Data Acquisition
The DSPIC33EP128MU204T-I/MV fits USB data-acquisition nodes because it combines a USB 2.0 full-speed device peripheral with a 12-bit ADC and 16-bit DSP core on one die. The 12-bit ADC digitizes sensor channels while the DSP core performs averaging, windowing, or FFT pre-processing at up to 70 MIPS, and the USB block streams results to a host without a separate interface chip. Placing the ADC sampling into DMA-driven buffers within the 16 KB RAM avoids CPU overhead during continuous acquisition. Unlike an external USB MCU + ADC combo, this single-chip approach reduces BOM cost and eliminates inter-chip latency, though designers must budget RAM carefully since 16 KB is modest for high-rate multi-channel buffering.
Recommended
Digital Power Conversion
Digital power supplies and PFC stages benefit from the dsPIC33EP128MU204's deterministic DSP execution and fast 12-bit ADC feedback loop. The core's single-cycle MAC instructions execute PID or 2P2Z compensators with predictable cycle counts at up to 70 MIPS, keeping control-loop latency low enough for switching regulators in the tens-to-hundreds of kHz range. The industrial -40C to +85C rating covers stressed power environments, and the 44-pin TQFP exposes sufficient PWM-capable pins for multi-rail designs. When USB telemetry to a host is required (e.g., programmable bench supplies), the MU variant is preferable to the MC variant, which is optimized purely for PWM output density.
Recommended
Sensor Conditioning and Signal Processing
For sensor front-ends - pressure, load cell, audio, or vibration - the dsPIC33EP128MU204 pairs its 12-bit ADC with on-core MAC acceleration for digital filtering (IIR/FIR) before results leave the chip. Executing filters in hardware-friendly DSP instructions at up to 70 MIPS offloads the host system and shortens the sensor-to-decision chain. The 16 KB RAM accommodates moderate filter tap arrays and double-buffered sample blocks; heavier spectral analysis may warrant the 256 KB/512 KB Flash siblings with the same footprint for code headroom. The integrated USB also enables direct connection to PCs for calibration tooling, making the part a compact single-chip smart-sensor controller.
Recommended
Embedded Motor Control with USB Telemetry
Although the MC variant is the motor-control specialist, the DSPIC33EP128MU204 still executes FOC (field-oriented control) mathematics efficiently with its DSP core and 12-bit ADC current sampling, and uniquely adds USB for tuning tools, firmware updates, or operator interfaces. A motor-driven product that must appear as a USB device - laboratory pumps, smart actuators, test benches - is a natural fit: current-loop math runs in the 16-bit core while the USB stack occupies Flash alongside control code within the 128 KB budget. Designers should verify PWM pin availability on the MU variant's multiplexing map, since the MC204 offers denser complementary PWM outputs on the identical footprint.
Recommended
Portable and Handheld Instruments
Battery-powered handheld instruments benefit from the single-supply 3.0 V to 3.6 V operation, 44-pin TQFP compactness, and integrated USB charging/configuration path of the dsPIC33EP128MU204. A single 3.3 V rail powers the DSC, and USB enumeration simplifies PC connectivity without level shifters. The 128 KB Flash holds application plus USB stack code, and the 12-bit ADC handles battery voltage and measurement channels. Since deep-sleep and idle currents are governed by the dsPIC33E power-management scheme detailed in the Microchip datasheet, firmware should exploit low-power modes between sampling bursts to extend battery life in portable designs.
Recommended
Industrial Control and Automation Nodes
In factory automation, the dsPIC33EP128MU204 serves as an intelligent node combining local control (DSP-core control loops, 12-bit ADC sensing) with a USB service port for commissioning. The industrial temperature grade (-40C to +85C) and RoHS-compliant 44-pin TQFP support standard industrial assembly and environments. Its 16-bit architecture provides the arithmetic precision needed for scaling sensor ranges and fixed-point control mathematics without floating-point libraries on every cycle. Where the node requires denser PWM for actuator drive rather than USB, the pin-compatible DSPIC33EP128MC204T-I/MV is the recommended substitute, preserving the PCB layout while changing peripheral emphasis.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33EP128MU204T-I/MV — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33EP128MC204T-I/MV | DSPIC33EP256MU204T-I/MV | DSPIC33EP512MU204T-I/MV |
|---|---|---|---|---|
| Package | 44-pin TQFP (/MV) | 44-pin TQFP (/MV) - same | 44-pin TQFP (/MV) - same | 44-pin TQFP (/MV) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 128 KB | 128 KB | 256 KB | 512 KB |
| ADC Resolution | 12-bit | 12-bit | 12-bit | 12-bit |
| USB Peripheral | Yes (USB 2.0 full-speed device, MU variant) | No (MC motor-control peripherals instead) | Yes (MU variant) | Yes (MU variant) |
| Temperature Range | -40C to +85C (I) | -40C to +85C (I) | -40C to +85C (I) | -40C to +85C (I) |
| Primary Use Case | USB-enabled DSC applications | Motor control / PWM-dense designs | USB designs needing 2x code space | USB designs needing 4x code space |
Key Differentiators
- Integrated USB 2.0 full-speed device on a DSP core (vs DSPIC33EP128MC204T-I/MV)
- Cost-optimized memory point (vs DSPIC33EP256MU204T-I/MV)
- Deterministic DSP arithmetic (vs Generic 16-bit MCUs in TQFP-44)
Design Notes
The DSPIC33EP128MU204T-I/MV operates from a single 3.0 V to 3.6 V supply. Place 0.1 uF ceramic decoupling capacitors at every VDD/VSS pin pair, positioned within a few millimeters of the pins, plus one bulk capacitor (4.7 uF to 10 uF) near the device. Follow the Microchip datasheet power section for VCAP regulator capacitor sizing - an incorrectly sized VCAP capacitor is one of the most common causes of unreliable dsPIC33E startup. Keep the ADC reference supply clean and separate from noisy loads.
For the 44-pin TQFP, route high-speed USB D+/D- traces as a matched-length differential pair (90 ohm differential impedance target, per USB 2.0 full-speed practice) kept short and away from switching nodes. Use a solid ground plane under the device; do not split ground under the USB pair. Provide ICSP programming header access (MCLR, PGD, PGC) in the layout for in-circuit debugging with Microchip tools such as PICkit or ICD.
The 'T' in DSPIC33EP128MU204T-I/MV means tape-and-reel packaging - do not confuse /MV (44-pin TQFP) with /ML (44-pin QFN) or /PT (64-pin TQFP); these are NOT footprint-compatible despite sharing the same die. When substituting the MC204 for the MU204, review peripheral pin-multiplexing differences in the Microchip datasheet before releasing the PCB, and verify USB stack code removal/addition in firmware. Confirm supply-voltage compatibility of all I/O at 3.3 V - this family is not 5 V tolerant.
Compliance Information
RoHS compliance and lead-free status consistent with Microchip's current standard product offering; formal REACH/halogen-free declarations should be requested from Microchip at order time.
