DSPIC33EP128MU506-I/MR - 16-bit DSC 128KB Flash USB | Microchip
MPN: DSPIC33EP128MU506-I/MR ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.9 | $6.90 |
| 10 | $6.25 | $62.50 |
| 100 | $5.6 | $560.00 |
| 500 | $5.1 | $2,550.00 |
| 1,000 | $4.65 | $4,650.00 |
DSPIC33EP128MU506-I/MR 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 power-management hierarchy, the dsPIC33EP family sits within Microchip's 16-bit MCU/DSC portfolio, bridging general-purpose PIC24 microcontrollers and higher-end 32-bit embedded processors. DSCs are optimized for embedded control loops that also require multiply-accumulate (MAC) DSP math.
Key features of the DSPIC33EP128MU506 include 128KB flash with self-programming capability, integrated USB 2.0 full-speed device support that distinguishes the MU variant from the motor-control MC variant, and the dsPIC33EP enhanced peripheral set including high-speed ADC, output-compare/PWM modules, and multiple UART, SPI, and I2C communication ports. Industrial temperature rating (-40C to +85C) is denoted by the I suffix.
Architecturally, the dsPIC33EP core uses an optimized C compiler-friendly 16-bit instruction set with DSP engine support for multiply-accumulate operations, modulo and bit-reversed addressing, and two circular registers for efficient FIR/FFT execution. Program flash is execution from the same address space used for data, with hardware loop support reducing code overhead in time-critical control loops.
Typical applications include USB-connected industrial instruments, embedded control and monitoring nodes, digital power supplies, motor-control systems, and general-purpose embedded systems requiring DSP math with USB communications.
When designing with this device, budget PCB decoupling on all VDD/VSS pin pairs and verify USB compliance with proper series resistors and connector termination. Confirm exact SRAM size and peripheral allocation against the manufacturer datasheet before finalizing memory maps.
This page synthesizes distributor stock and pricing references, drop-in alternatives within the dsPIC33 family, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for DSPIC33EP128MU506-I/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-I/MR (same form factor and footprint) — differing in Package, Operating Temperature, Core, Program Memory (Flash), RAM.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33EP128MU506-E/MR
✅ Drop-In✓ In Stock
$4.6 / Unit
View Datasheet →DSPIC33EP128MC506-I/MR
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33EP128GM306-E/PT
✅ Drop-In✓ In Stock
$6.15 / Unit
View Datasheet →DSPIC33EP128MC206-I/PT
✅ Drop-In✓ In Stock
$3.95 / Unit
View Datasheet →DSPIC33CK512MP606T-I/PT
✅ Drop-In✓ In Stock
$4.86 / Unit
View Datasheet →DSPIC33EP128MU506-I/MR Maximum Ratings & Electrical Characteristics
| Core Architecture | 16-bit dsPIC33EP DSC |
| Program Memory (Flash) | 128 KB |
| Core Operating Frequency | up to 60 MHz (approx. 60-70 MIPS) |
| USB Interface | USB 2.0 Full-Speed (device) |
| Package | 64-pin TQFP (MR) |
| Operating Temperature | -40C to +85C (I grade) |
| Mounting Type | Surface Mount |
| Communication Interfaces | UART, SPI, I2C (per dsPIC33EP family) |
| PWM Modules | Output Compare / PWM (per dsPIC33EP family) |
| DSP Engine | Single-cycle MAC, DSP instruction set |
| Product Description (per distributors) | IC DSC 16BIT 128KB FLASH |
DSPIC33EP128MU506-I/MR 64-pin tqfp (mr) Pin Configuration Guide
Pin configuration for DSPIC33EP128MU506-I/MR (64-pin tqfp (mr) 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-I/MR.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33EP128MU506-I/MR is suitable for 6 applications: USB-Connected Industrial Instruments, Digital Power Supplies, Motor Control Systems, Embedded Data Loggers, Audio and Signal Processing Nodes, Building Automation and Smart Devices.
USB-Connected Industrial Instruments
The DSPIC33EP128MU506-I/MR fits USB-connected industrial instrumentation because its integrated USB 2.0 full-speed device module eliminates an external USB interface chip, while the 16-bit dsPIC33EP core at roughly 60 MHz provides the DSP math needed for sensor linearization and filtering. A typical design connects the USB peripheral through 22-33 ohm series resistors to a USB-B or USB-C receptacle, with the ADC sampling analog front ends at rates the DSP engine can process in real time. The -40C to +85C industrial rating covers factory-floor ambient conditions, and the 128KB flash leaves ample room for USB stacks such as Microchip's MLA alongside the application firmware. Unlike a generic MCU plus separate USB PHY, this single-chip approach reduces BOM cost and board area.
Recommended
Digital Power Supplies
In digitally controlled power supplies, the DSPIC33EP128MU506-I/MR closes the feedback loop using its high-speed ADC and PWM/output-compare peripherals, executing voltage-mode or current-mode control laws with the single-cycle MAC DSP engine. The 128KB flash accommodates compensation algorithms, soft-start sequencing, and fault logging, while USB allows a host PC to reconfigure regulation setpoints or capture telemetry. The roughly 60-70 MIPS core throughput supports switching frequencies in the tens of kilohertz with multi-sample-per-cycle sensing. Compared to analog controllers, firmware-based control enables adaptive compensation and remote diagnostics; compared to the MC variant, the MU part adds USB commissioning without changing the 64-pin TQFP PCB footprint, simplifying platform reuse across product tiers.
Recommended
Motor Control Systems
Microchip positions the dsPIC33EP family explicitly for high-performance precision motor control, and the DSPIC33EP128MU506-I/MR executes field-oriented control (FOC) for PMSM and BLDC motors using its DSP MAC instructions and PWM modules driving a three-phase inverter gate-driver stage. The high-speed ADC samples phase currents synchronously with the PWM carrier, and the 128KB flash holds FOC estimators plus optional USB diagnostics. While the MC506 sibling includes integrated op-amps for current shunt conditioning, the MU506 can pair with external amplifiers and still offer the same 64-pin TQFP footprint, letting one PCB serve both variants. The -40C to +85C rating suits industrial drives, pumps, and fans in enclosed environments.
Recommended
Embedded Data Loggers
The DSPIC33EP128MU506-I/MR is well suited to embedded data-logger designs that must stream records to a host over USB while continuing to acquire sensor data locally. The 128KB flash can hold logging firmware plus a USB mass-storage or CDC stack, and the multiple UART, SPI, and I2C ports simultaneously interface SD cards, RTCs, and analog sensors. The dsPIC33EP core performs timestamping, averaging, and lossless compression in hardware loops, keeping CPU load low at 60 MHz operation. Designers should budget the SRAM carefully for ring buffers and validate USB suspend currents. Industrial temperature rating and a single 3.3V rail simplify deployment in unattended monitoring enclosures for energy, environment, and machine-health applications.
Recommended
Audio and Signal Processing Nodes
For embedded audio processing and general DSP signal-chain nodes, the DSPIC33EP128MU506-I/MR applies its single-cycle MAC, modulo addressing, and bit-reversed addressing to FIR/IIR filters, FFTs, and tone generation, while the USB full-speed interface streams audio-class data to a PC without additional interface silicon. The 60 MHz-class core handles moderate sample-rate filtering that slower 8-bit MCUs cannot, and the 128KB flash stores coefficient tables and USB descriptors. Compared with a dedicated DSP, integration reduces board complexity; compared with 32-bit application processors, it offers deterministic real-time behavior at lower cost. The 64-pin TQFP provides enough GPIO to multiplex codecs, rotary encoders, and user interfaces on one controller.
Recommended
Building Automation and Smart Devices
Building automation nodes benefit from the DSPIC33EP128MU506-I/MR's combination of USB commissioning, multiple UART/SPI/I2C buses, and DSP-grade signal processing for occupancy sensing, HVAC control loops, and energy submetering. USB enables field configuration from a laptop without dedicated programmers, while I2C links environmental sensors and SPI connects storage or displays. The 16-bit core at roughly 60 MHz executes PID control loops with ample margin, and 128KB flash stores communication stacks plus OTA-style update scaffolding. The industrial -40C to +85C rating covers rooftop and mechanical-room installations, and the single 3.3V supply simplifies power-tree design alongside 24V-backbone system power.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33EP128MU506-I/MR — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33EP128MU506-E/MR | DSPIC33EP128MC506-I/MR | DSPIC33EP128GM306-E/PT | DSPIC33CK512MP606T-I/PT |
|---|---|---|---|---|---|
| Package | 64-pin TQFP (MR) | 64-pin TQFP (MR) - same | 64-pin TQFP (MR) - same | 64-pin TQFP (PT) - same footprint | 64-pin TQFP (PT) - same footprint |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 128 KB | 128 KB | 128 KB | 128 KB | 512 KB |
| Core Family / Speed | dsPIC33EP, approx. 60-70 MIPS | dsPIC33EP, approx. 60-70 MIPS | dsPIC33EP, 60 MHz (per Mouser) | dsPIC33EP, approx. 60-70 MIPS | dsPIC33CK, up to 100 MIPS |
| Temperature Range | -40C to +85C (I) | -40C to +125C (E) | -40C to +85C (I) | -40C to +125C (E) | -40C to +85C (I) |
| Analog Specialization | Standard dsPIC33EP ADC | Standard dsPIC33EP ADC | Includes op-amps (per Mouser) | GM analog feature set | MP-series 3.5 Msps ADC class |
| Firmware Compatibility | Baseline | Identical - direct drop-in | Near-identical, remove USB stack | Peripheral remap required | Different core - port required |
Key Differentiators
- Integrated USB 2.0 full-speed in the EP 128KB family (vs DSPIC33EP128MC506-I/MR)
- Extended temperature option on identical silicon (vs DSPIC33EP128MU506-E/MR)
- Lower cost for non-USB designs (vs DSPIC33EP128MU506-I/MR)
Design Notes
For the 64-pin TQFP, place a 100 nF ceramic capacitor at each VDD/VSS pin pair within 2 mm of the pins and add one 4.7-10 uF bulk capacitor near the device. Use a continuous ground plane on layer 2 for return-current control. The USB D+/D- traces must be routed as a matched-length pair with 90-ohm differential impedance target and 22-33 ohm series resistors near the MCU pins. Avoid routing the USB pair near switching regulator nodes to prevent data errors.
Before substituting the DSPIC33EP128MC506-I/MR for the MU506, remove all USB stack code and peripheral initialization - the MC variant has no USB module and the build will fail or hang at boot. When substituting the CK-series parts, note the dsPIC33CK core has a different instruction timing profile and register map; treat it as a port, not a drop-in. Always re-verify pin multiplexing (RPx remappable pins) against the specific device datasheet rather than reusing EP-family configuration files.
Estimated: the 64-pin TQFP power dissipation for this controller is typically well under 0.5 W at 3.3V with moderate I/O loading (based on typical 16-bit DSC core currents), so a standard 4-layer PCB with thermal vias under the exposed power area is sufficient - no heatsink is required. If the design drives many high-current GPIOs or runs at maximum clock continuously, calculate P = VDD x IDD_max from the datasheet electrical characteristics table and confirm the junction-to-ambient rise stays within the -40C to +85C envelope.
Compliance Information
Compliance data not stated in the provided verified web data; confirm RoHS/REACH status on the official Microchip product page before ordering.
