DSPIC33EP128MU506-I/PT - 16-bit 70 MIPS DSC, 128KB Flash | Microchip
MPN: DSPIC33EP128MU506-I/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.95 | $6.95 |
| 10 | $6.28 | $62.80 |
| 100 | $5.55 | $555.00 |
| 500 | $5.1 | $2,550.00 |
| 1,000 | $4.65 | $4,650.00 |
DSPIC33EP128MU506-I/PT Overview
A digital signal controller combines the computational architecture of a microcontroller with the math acceleration of a digital signal processor. Within the power-management hierarchy of embedded systems, the dsPIC33E family sits between general-purpose MCUs and standalone DSPs, offering a DSP-enhanced instruction set (DSP engine, 40-bit accumulators, modulo and bit-reversed addressing) alongside familiar MCU peripherals, making it a strong fit for real-time embedded control.
Key features of this device include up to 70 MIPS throughput at 3.3V operation (VDD 3.0V to 3.6V), 128KB Flash with self-programming capability, 16KB on-chip SRAM, and 2.0V to 3.6V-tolerant flexible I/O on up to 53 pins. Peripherals include a 10-bit ADC capable of 1.1 Msps, full-speed USB 2.0 device support, CAN 2.0B, multiple UARTs, SPI and I2C ports, output-compare/PWM channels, and an input-capture subsystem for motion and power-conversion feedback loops.
Architecturally, the dsPIC33E core uses a modified Harvard pipeline with hardware multiply-accumulate, enabling single-cycle MAC operations for filtering, transforms, and control-law execution without external DSP silicon.
Typical applications include digital power supplies, brushless DC and PMSM motor control, USB-connected instrumentation, and industrial sensing nodes.
Design consideration: keep the USB and analog supply domains filtered and decouple each VDD pin with 0.1uF ceramics close to the package.
This page synthesizes verified distributor stock data, drop-in family alternatives, and practical design guidance not found in a single manufacturer source. Pricing shown reflects distributor RFQ data as of 2026-09-24.
Drop-in alternatives for DSPIC33EP128MU506-I/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 DSPIC33EP128MU506-I/PT (same form factor and footprint) — differing in Operating Temperature.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33EP128MU506-H/PT
✅ Drop-In✓ In Stock
$5.73 / Unit
View Datasheet →DSPIC33EP256MU506-I/PT
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP64MU506-I/PT
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP128MC506-I/PT
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP128MU506-E/PT
✅ Drop-In✓ In Stock
$4.3 / Unit
View Datasheet →DSPIC33EP128MU506-I/PT Maximum Ratings & Electrical Characteristics
| Core Processor | dsPIC33E (16-bit DSC core) |
| Core Size | 16-bit |
| Maximum Operating Frequency | 70 MIPS |
| Program Memory Size | 128KB Flash |
| RAM Size | 16KB SRAM |
| Supply Voltage Range | 3.0 V to 3.6 V |
| Operating Temperature | -40C to +85C (I grade) |
| Package | 64-pin TQFP (PT) |
| Mounting Type | Surface Mount |
| USB | USB 2.0 full-speed device |
| Connectivity | CAN 2.0B, UART, SPI, I2C, USB |
| ADC Resolution | 10-bit |
| Timers | 5 x 16-bit |
| PWM Channels | 8 (output compare/PWM) |
| Packaging | Tray |
DSPIC33EP128MU506-I/PT 64-pin tqfp (pt) Pin Configuration Guide
Pin configuration for DSPIC33EP128MU506-I/PT (64-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 DSPIC33EP128MU506-I/PT.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33EP128MU506-I/PT is suitable for 6 applications: Digital Power Supplies, Brushless DC and PMSM Motor Control, USB-Connected Industrial Instrumentation, Industrial Sensing Nodes, Audio and Voice Signal Processing, Lighting and HID Control.
Digital Power Supplies
The DSPIC33EP128MU506-I/PT fits digitally controlled AC-DC and DC-DC converters where loop compensation, soft-start, and protection must run deterministically at switching frequencies of 100-500 kHz. Its 70 MIPS core executes single-cycle MAC operations for PID and notch-filter control laws, while the 10-bit ADC with simultaneous sampling of voltage and current feedback keeps loop latency low. Output-compare/PWM channels generate phase-shifted or complementary gate drive with dead-time control. The I and E temperature grades support industrial power environments, and 3.0-3.6V operation simplifies bias from an auxiliary rail.
Recommended
Brushless DC and PMSM Motor Control
Sensorless and sensored BLDC/PMSM drives benefit directly from the DSPIC33EP128MU506-I/PT's control-oriented architecture. The 70 MIPS pipeline runs field-oriented control (FOC) or trapezoidal commutation with current-loop rates well above the electrical frequency of typical industrial motors. Input-capture channels time back-EMF zero crossings for sensorless commutation, the 10-bit ADC samples phase currents, and multiple PWM outputs drive a three-phase inverter with hardware dead time. CAN 2.0B connects the drive to factory networks while optional USB enables commissioning from a PC. The 64-pin TQFP provides enough GPIO for Hall sensors, encoder inputs, and protection interlocks.
Recommended
USB-Connected Industrial Instrumentation
The integrated USB 2.0 full-speed device module makes the DSPIC33EP128MU506-I/PT a natural fit for bench instruments, data loggers, and sensor hubs that stream data to a PC without an external USB controller or bridge chip. The 70 MIPS core and DSP engine handle oversampling, decimation, and FFT pre-processing locally, while 128KB Flash stores logging firmware and bootloaders supporting field upgrades over USB itself. Multiple UART/SPI/I2C ports acquire from several sensor front ends concurrently. Because USB enumeration is handled on-chip, BOM cost stays low and the single 3.0-3.6V supply covers both logic and I/O domains.
Recommended
Industrial Sensing Nodes
Factory sensing nodes aggregating analog transducers benefit from the controller's ADC channel count, DSP filtering, and CAN bus integration. The 10-bit ADC converts thermistor, pressure, and current-shutter inputs, with the DSP engine implementing IIR/FIR filtering and RMS computation in real time rather than offloading to a host. CAN 2.0B provides robust, noise-immune communication along cable trays where RS-485 or CAN dominates industrial practice. The 64-pin TQFP exposes enough GPIO for discrete limit switches and relay drives, while -40C to +85C operation (I grade, with E grade at +125C available) covers unconditioned industrial enclosures.
Recommended
Audio and Voice Signal Processing
The DSP engine of the DSPIC33EP128MU506-I/PT (single-cycle MAC, dual operand fetch, bit-reversed addressing for FFTs) handles sample-rate audio filtering, tone generation, and echo cancellation at typical 8-48 kHz sampling rates. Multiple SPI ports interface external audio codecs or I2S-style serial devices, while USB provides a convenient PC-side audio channel for voice appliances and intercom products. The 70 MIPS headroom leaves margin above codec-loop processing requirements, and 128KB Flash accommodates codebooks and configuration tables. For battery-free desktop devices, the 3.3V single-supply operation keeps the power tree simple.
Recommended
Lighting and HID Control
Advanced lighting fixtures - including DMX-controlled stage lighting and high-intensity LED drivers - use the DSPIC33EP128MU506-I/PT for PWM dimming, color mixing, and thermal fold-back. Eight output-compare/PWM channels provide independent dimming phases with hardware resolution fine enough for flicker-free current regulation, and the 10-bit ADC monitors LED stack temperature and bus current for derating logic. USB enables configuration via PC utilities, while UART connectivity receives DMX512-style streams. The 70 MIPS core sequences multi-channel fixtures deterministically, and the 64-pin TQFP offers ample GPIO for addressing switches and status indicators.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33EP128MU506-I/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33EP128MU506-H/PT | DSPIC33EP256MU506-I/PT | DSPIC33EP64MU506-I/PT | DSPIC33EP128MC506-I/PT | DSPIC33EP128MU506-E/PT |
|---|---|---|---|---|---|---|
| Package | 64-pin TQFP (PT) | 64-pin TQFP (PT) - same | 64-pin TQFP (PT) - same | 64-pin TQFP (PT) - same | 64-pin TQFP (PT) - same | 64-pin TQFP (PT) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Program Memory | 128KB | 128KB | 256KB | 64KB | 128KB | 128KB |
| Core Throughput | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS |
| USB | USB 2.0 full-speed device | USB 2.0 full-speed device | USB 2.0 full-speed device | USB 2.0 full-speed device | USB (per family datasheet - MC variant adds motor PWM emphasis) | USB 2.0 full-speed device |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +125C |
| Typical Application Focus | USB + general DSP control | Identical - alternate revision | Larger code base, same focus | Cost-optimized, smaller code | Motor control PWM emphasis | High-temperature environments |
| Supply Voltage | 3.0 V to 3.6 V | 3.0 V to 3.6 V | 3.0 V to 3.6 V | 3.0 V to 3.6 V | 3.0 V to 3.6 V | 3.0 V to 3.6 V |
Key Differentiators
- Integrated full-speed USB 2.0 device (vs DSPIC33EP128MC506-I/PT)
- Large Flash headroom in same footprint (vs DSPIC33EP64MU506-I/PT)
- Industrial temperature coverage (vs DSPIC33EP128MU506-E/PT)
Design Notes
Decouple every VDD and AVDD pin with 0.1uF ceramic capacitors placed within 2-3 mm of the package pins, and add a bulk 10uF capacitor near the device. Connect all VSS and the exposed TQFP center-lead region to a solid ground plane with multiple vias. Keep the USB D+/D- pair routed as a 90-ohm differential pair of matched length, and isolate the analog section (VREF, analog inputs) from PWM switching noise on the layout floorplan.
The DSPIC33EP128MU506 requires a 3.0-3.6V core/I/O supply - it is not a 5V part. Regulate from a 5V rail with an LDO such as a Microchip MCP1700-class device (estimated: at 70 MIPS with moderate I/O loading, current draw is in the tens of mA range, so a 100-150 mA LDO suffices; verify against the datasheet electrical characteristics table for your exact configuration). Allow per-pin I/O current budgets and add soft-start to avoid brown-out during USB enumeration.
Do not assume the MU506 is drop-in identical to the MC506 at the firmware level - peripheral sets differ (USB vs motor-control PWM), so code does not port blindly even though the footprint matches. Also confirm the exact ordering-code suffix at procurement: -I (industrial, -40C to +85C) versus -E (extended, -40C to +125C) are not interchangeable for designs validated only at industrial temperature. When using the internal oscillator, verify achieved USB timing accuracy since USB full-speed requires an accurate clock source.
Compliance Information
Verified web data does not include explicit RoHS/REACH/lead-free certificates for this ordering code. Obtain formal material declarations from Microchip environmental documentation for compliance records. Not an automotive AEC-Q100 qualified part number.
