DSPIC33EP128MU204-E/PT - 16-bit DSC 128KB Flash | Microchip
MPN: DSPIC33EP128MU204-E/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.12 | $6.12 |
| 10 | $5.55 | $55.50 |
| 100 | $4.98 | $498.00 |
| 500 | $4.52 | $2,260.00 |
| 1,000 | $4.1 | $4,100.00 |
DSPIC33EP128MU204-E/PT Overview
A digital signal controller combines the compute architecture of a digital signal processor (DSP) with the peripheral set and ease of use of a microcontroller (MCU). Within the power-management hierarchy of embedded systems, the DSC sits between general-purpose MCUs and dedicated DSPs, offering a single-chip solution for control loops that also need math-intensive signal processing such as filters, transforms, and sensor fusion.
Key features of the dsPIC33EP128MU204 include the high-performance dsPIC33E core running at up to 70 MIPS, DSP engine with single-cycle MAC and 40-bit accumulators, USB OTG connectivity, multiple UART/SPI/I2C serial ports, a 12-bit ADC with up to 1.1 Msps throughput, and PWM modules suited to motor control and power conversion. The -40C to +125C extended temperature grade (E suffix) supports industrial and automotive-adjacent environments.
Architecturally, the dsPIC33E core uses a modified Harvard pipeline with dedicated address generators and hardware loop support, so FIR/IIR filtering and PID control execute deterministically without software overhead. Deep sleep and doze modes allow aggressive power scaling in battery-powered designs.
Typical applications include brushless DC and PMSM motor control, digital power supplies (LLC, PFC, totem-pole), USB-connected industrial sensors, audio processing nodes, and general-purpose embedded control requiring DSP math.
Design consideration: the PT package is a 0.8 mm pitch TQFP - use a solid ground plane, place 100 nF decoupling capacitors at every VDD/VSS pair, and verify USB impedance requirements early if the OTG port is used.
This page synthesizes distributor availability, drop-in family alternatives, and design notes not consolidated in the manufacturer datasheet. Pricing shown is as of 2026-09-24.
Drop-in alternatives for DSPIC33EP128MU204-E/PT — 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 DSPIC33EP128MU204-E/PT (same form factor and footprint) — differing in Package, Connectivity, Operating Temperature, Program Memory Size, Qualification.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33EP256MU204-E/PT
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP64MU204-E/PT
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP128MC204-E/PT
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$4.72 / Unit
View Datasheet →DSPIC33EP256MC204-E/PT
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP64MC204-E/PT
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$2.97 / Unit
View Datasheet →DSPIC33EP128MC204T-E/ML
✅ Drop-In✓ In Stock
$3.8 / Unit
View Datasheet →DSPIC33EP128MU204-E/PT Maximum Ratings & Electrical Characteristics
| Core Processor | dsPIC33E (16-bit DSC core) |
| Core Size | 16-bit |
| Program Memory Size | 128 KB Flash |
| RAM Size | 16 KB |
| Maximum CPU Speed | 70 MIPS |
| ADC Resolution | 12-bit |
| Connectivity | USB OTG, UART, SPI, I2C |
| Operating Temperature | -40C to +125C |
| Package | 44-pin TQFP (PT) |
| Mounting Type | Surface Mount |
| Packaging | Tray |
| Base Product Number | DSPIC33EP128MU204 |
| Product Category | Digital Signal Processors & Controllers - DSP, DSC |
DSPIC33EP128MU204-E/PT 44-pin tqfp (pt) Pin Configuration Guide
Pin configuration for DSPIC33EP128MU204-E/PT (44-pin tqfp (pt) 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 DSPIC33EP128MU204-E/PT.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33EP128MU204-E/PT is suitable for 6 applications: Brushless DC and PMSM Motor Control, Digital Power Conversion, USB-Connected Industrial Sensors, Audio Signal Processing Nodes, Battery-Powered Portable Instruments, Automotive-Adjacent and Heavy-Duty Control.
Brushless DC and PMSM Motor Control
The DSPIC33EP128MU204-E/PT fits motor-control designs because its 70 MIPS dsPIC33E core executes field-oriented control (FOC) loops with deterministic single-cycle MAC operations, while dedicated motor-control PWM peripherals generate complementary outputs with dead-time insertion. The 12-bit ADC provides current and position feedback sampling fast enough for multi-kHz current loops. Firmware uses hardware DSP accumulators for Park/Clarke transforms and PID stages, avoiding software multiply overhead. This DSC handles both the real-time control loop and higher-level sequencing (start-up, fault handling, communication) on one chip, reducing BOM count. The -40C to +125C E-grade tolerates drive-enclosure ambient temperatures. Trade-off: the ADC channel count should be verified against sensor count before layout.
Recommended
Digital Power Conversion
For LLC converters, PFC stages, and DC-DC modules, the DSPIC33EP128MU204-E/PT offers the fast 12-bit ADC and high-resolution PWM needed for voltage- and current-mode digital control at switching frequencies in the hundreds of kilohertz. The 70 MIPS core closes current loops deterministically, and the DSP engine computes compensator equations in a fixed number of cycles, ensuring consistent loop bandwidth. The -40C to +125C rating suits power supplies in industrial cabinets. Because the MU204 variant adds USB OTG, the same controller can also provide configuration and telemetry over USB without a second MCU. Designers should confirm PWM resolution and ADC sample-time specs in the family datasheet when targeting very high switching frequencies, as these define the achievable loop bandwidth.
Recommended
USB-Connected Industrial Sensors
The USB OTG peripheral differentiates the MU204 from the MC204 variant and makes this DSC a strong fit for USB-connected sensors, data loggers, and test fixtures. The 12-bit ADC digitizes analog sensor outputs at up to 1.1 Msps-class throughput, while the DSP engine applies calibration filters and FFT-based analysis on-chip before transmitting formatted data over full-speed USB. The 128 KB Flash accommodates USB stacks plus application firmware with margin, and 16 KB RAM buffers sample streams. The E temperature grade covers factory-floor and outdoor enclosures. Note that USB clocking requires a suitable crystal and careful layout; verify the clock options table in the family datasheet during schematic capture to guarantee the 48 MHz USB clock derivation.
Recommended
Audio Signal Processing Nodes
In audio applications, the DSPIC33EP128MU204-E/PT performs FIR/IIR filtering, gain staging, and simple effects using its single-cycle MAC and 40-bit accumulators, which preserve dynamic range during fixed-point processing. The 12-bit ADC handles line-level input digitization for cost-sensitive or non-hi-fi paths, while the E-grade temperature rating suits commercial audio installed in enclosed racks. The part bridges processing and system control: UART/I2C manage volume ICs and CODECs, and USB OTG enables firmware update or streaming modes without additional controllers. For high-fidelity 24-bit paths, pair the DSC with an external audio CODEC over SPI or I2C, since the internal ADC resolution is 12 bits - a key trade-off to evaluate against pure audio-DSP alternatives.
Recommended
Battery-Powered Portable Instruments
The dsPIC33E family's power-management modes - deep sleep, doze, and peripheral clock gating - let the DSPIC33EP128MU204-E/PT average low current while waking rapidly for burst processing, an ideal pattern for portable meters and handheld diagnostic tools. The 70 MIPS core shortens active windows: a measurement burst, filter, and display update complete quickly, then the device returns to sleep. The 12-bit ADC supports direct sensor acquisition, and USB OTG provides charging-side or PC connectivity in the same chip. The extended -40C to +125C range additionally covers outdoor instruments left in vehicles. Designers should profile deep-sleep current against their target battery life in the datasheet electrical characteristics section and design wake sources accordingly.
Recommended
Automotive-Adjacent and Heavy-Duty Control
While the DSPIC33EP128MU204-E/PT is not AEC-Q100 qualified, its -40C to +125C extended temperature grade suits off-highway, agricultural, and industrial-vehicle auxiliary electronics where formal automotive qualification is not contractually required. The 70 MIPS DSC core runs pump, fan, and actuator control with sensorless algorithms, the 12-bit ADC samples analog position and pressure sensors, and UART/CAN-via-SPI links to vehicle networks. The 128 KB Flash holds robust fault-handling state machines plus OTA-style update loaders. For designs that later require full AEC-Q100 compliance, plan a transition path to qualified Microchip automotive DSC variants and confirm qualification status on the manufacturer product page before release.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33EP128MU204-E/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33EP256MU204-E/PT | DSPIC33EP64MU204-E/PT | DSPIC33EP128MC204-E/PT | DSPIC33EP256MC204-E/PT |
|---|---|---|---|---|---|
| Package | 44-pin TQFP (PT) | 44-pin TQFP (PT) - same | 44-pin TQFP (PT) - same | 44-pin TQFP (PT) - same | 44-pin TQFP (PT) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core Speed | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS |
| Program Flash | 128 KB | 256 KB | 64 KB | 128 KB | 256 KB |
| RAM | 16 KB | 16 KB | 16 KB | 16 KB | 16 KB |
| USB OTG | Yes | Yes | Yes | No | No |
| Operating Temperature | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +125C |
| ADC Resolution | 12-bit | 12-bit | 12-bit | 12-bit | 12-bit |
Key Differentiators
- Integrated USB OTG in the 204-pinout family (vs DSPIC33EP128MC204-E/PT)
- Memory upgrade path in the identical footprint (vs DSPIC33EP256MU204-E/PT)
- Extended temperature grade for industrial ambients (vs DSPIC33EP128MU204-I/PT (commercial I-grade))
Design Notes
The PT package is a 44-pin, 0.8 mm pitch TQFP. Place a 100 nF ceramic decoupling capacitor at every VDD/VSS pin pair, as close to the pins as possible, plus one bulk 4.7 uF-10 uF capacitor near the supply entry. Use a solid, unbroken ground plane on layer 2. Escape routing under the package is standard practice; avoid running noisy PWM traces under the crystal and ADC input pins. Keep the analog ground return for the ADC reference separate until a single-point star connection near the supply.
If the USB OTG peripheral is used, the 48 MHz USB clock must be derived from the correct crystal frequency per the clock options in the family datasheet (commonly 8 MHz or 12 MHz via PLL). Route D+/D- as a closely coupled pair with 90 ohm differential impedance for short runs, and add ESD protection at the connector. Mismatched crystal loading capacitors are a common cause of USB enumeration failure - verify load capacitance against the crystal specification.
Do not assume pin-for-pin peripheral equivalence across MU and MC variants: the MC204 lacks USB, and some pins have different multiplexing. Always recompile and re-check the peripheral pin-select mapping when substituting family members. Additionally, extended-temperature (E grade) parts must be derated for internal power dissipation at 125C ambient - estimate junction temperature using the TQFP-44 thermal resistance from the datasheet before finalizing the thermal budget. This estimate should be validated with the manufacturer's thermal data, not assumed.
Compliance Information
Compliance data was not present in the retrieved web data; verify RoHS/REACH status on the Microchip product page compliance documents. This part is a general-purpose industrial DSC and is not marketed as AEC-Q100 qualified.
