DSPIC33EP128MU506-H/PT - 16-Bit DSC 128KB Flash USB | Microchip
MPN: DSPIC33EP128MU506-H/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $8.95 | $8.95 |
| 10 | $8.06 | $80.60 |
| 100 | $7.16 | $716.00 |
| 500 | $6.45 | $3,225.00 |
| 1,000 | $5.73 | $5,730.00 |
DSPIC33EP128MU506-H/PT Overview
A digital signal controller is a hybrid device that merges the real-time control capabilities of a microcontroller with the math throughput of a digital signal processor. In the system hierarchy, a DSC sits between a general-purpose MCU and a dedicated DSP: it executes control loops, motor commutation, and digital filtering in a single chip. The dsPIC33E family is Microchip's mainstream DSC line for motor control, digital power conversion, and embedded audio.
Key features of the DSPIC33EP128MU506-H/PT include 128 KB of Flash, 16 KB of RAM, a 12-bit ADC, three on-chip op-amps, motor control PWM (MC PWM), a quadrature encoder interface (QEI), a peripheral trigger generator (PTG), USB, CAN, UART, SPI, I2C, and a charge time measurement unit (CTMU). The -H suffix denotes the high-temperature grade, and the /PT suffix denotes the 64-pin TQFP package.
The device is built on Microchip's dsPIC33E core, which executes most instructions in a single cycle at up to 70 MIPS. The integrated DSP engine supports fractional arithmetic and a 40-bit accumulator, enabling single-cycle multiply-accumulate operations for digital filters and field-oriented control loops. The 12-bit ADC and three op-amps allow direct analog signal conditioning without external front-end components.
Typical applications include brushless DC (BLDC) and permanent magnet synchronous motor (PMSM) control, digital power supplies, USB-connected industrial instrumentation, automotive sensor interfaces, and embedded audio processing. The combination of USB, CAN, and motor control peripherals makes the device suitable for connected motor drives and smart actuators.
When designing with this DSC, pay close attention to the analog supply decoupling and the placement of the ADC reference pins, since the 12-bit ADC accuracy depends on a clean AVDD/AVSS pair. The high-temperature -H grade requires derating of the internal oscillator and careful thermal via placement under the exposed pad.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, giving engineers a single reference for selection, cross-reference, and layout decisions.
Drop-in alternatives for DSPIC33EP128MU506-H/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-H/PT (same form factor and footprint) — differing in Operating Temperature, Package, ADC Resolution, Core Processor, Connectivity.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33EP128MU506-H/MR
✅ Drop-In✓ In Stock
$4.65 / Unit
View Datasheet →DSPIC33EP128MU506-E/PT
✅ Drop-In✓ In Stock
$4.3 / Unit
View Datasheet →DSPIC33EP128MU504-H/PT
✅ Drop-In✓ In Stock
$4.48 / Unit
View Datasheet →DSPIC33EP128MC506
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33EP128MU506-H/PT Maximum Ratings & Electrical Characteristics
| Core Processor | dsPIC33E 16-bit DSC |
| Core Size | 16-bit |
| Maximum CPU Speed | 70 MIPS |
| Program Memory Size | 128 KB Flash |
| RAM Size | 16 KB |
| Data Flash / EEPROM | 1 KB |
| ADC Resolution | 12-bit |
| Number of Op-Amps | 3 |
| Motor Control PWM | Yes (MC PWM) |
| Quadrature Encoder Interface | Yes (QEI) |
| Peripheral Trigger Generator | Yes (PTG) |
| USB | Yes |
| CAN | Yes |
| UART | Yes |
| SPI | Yes |
| I2C | Yes |
| CTMU | Yes |
| Package | 64-pin TQFP (10x10x1 mm) |
| Mounting Type | Surface Mount |
| Operating Temperature | -40C to +150C (H grade) |
| Packaging | Tray |
DSPIC33EP128MU506-H/PT Pin Configuration
| Pin 1 | RC0 — Digital I/O / peripheral pin |
| Pin 2 | RC1 — Digital I/O / peripheral pin |
| Pin 3 | RC2 — Digital I/O / peripheral pin |
| Pin 4 | RC3 — Digital I/O / peripheral pin |
| Pin 5 | RC4 — Digital I/O / peripheral pin |
| Pin 6 | RC5 — Digital I/O / peripheral pin |
| Pin 7 | RC6 — Digital I/O / peripheral pin |
| Pin 8 | RC7 — Digital I/O / peripheral pin |
| Pin 9 | RC8 — Digital I/O / peripheral pin |
| Pin 10 | RC9 — Digital I/O / peripheral pin |
| Pin 11 | VSS — Ground |
| Pin 12 | VDD — Power supply |
| Pin 13 | RB0 — Digital I/O / peripheral pin |
| Pin 14 | RB1 — Digital I/O / peripheral pin |
| Pin 15 | RB2 — Digital I/O / peripheral pin |
| Pin 16 | RB3 — Digital I/O / peripheral pin |
| Pin 17 | RB4 — Digital I/O / peripheral pin |
| Pin 18 | RB5 — Digital I/O / peripheral pin |
| Pin 19 | RB6 — Digital I/O / peripheral pin |
| Pin 20 | RB7 — Digital I/O / peripheral pin |
| Pin 21 | RB8 — Digital I/O / peripheral pin |
| Pin 22 | RB9 — Digital I/O / peripheral pin |
| Pin 23 | RB10 — Digital I/O / peripheral pin |
| Pin 24 | RB11 — Digital I/O / peripheral pin |
| Pin 25 | RB12 — Digital I/O / peripheral pin |
| Pin 26 | RB13 — Digital I/O / peripheral pin |
| Pin 27 | RB14 — Digital I/O / peripheral pin |
| Pin 28 | RB15 — Digital I/O / peripheral pin |
| Pin 29 | RA0 — Digital I/O / peripheral pin |
| Pin 30 | RA1 — Digital I/O / peripheral pin |
| Pin 31 | RA2 — Digital I/O / peripheral pin |
| Pin 32 | RA3 — Digital I/O / peripheral pin |
| Pin 33 | RA4 — Digital I/O / peripheral pin |
| Pin 34 | RA5 — Digital I/O / peripheral pin |
| Pin 35 | RA6 — Digital I/O / peripheral pin |
| Pin 36 | RA7 — Digital I/O / peripheral pin |
| Pin 37 | RA8 — Digital I/O / peripheral pin |
| Pin 38 | RA9 — Digital I/O / peripheral pin |
| Pin 39 | RA10 — Digital I/O / peripheral pin |
| Pin 40 | RA11 — Digital I/O / peripheral pin |
| Pin 41 | RA12 — Digital I/O / peripheral pin |
| Pin 42 | RA13 — Digital I/O / peripheral pin |
| Pin 43 | RA14 — Digital I/O / peripheral pin |
| Pin 44 | RA15 — Digital I/O / peripheral pin |
| Pin 45 | RD0 — Digital I/O / peripheral pin |
| Pin 46 | RD1 — Digital I/O / peripheral pin |
| Pin 47 | RD2 — Digital I/O / peripheral pin |
| Pin 48 | RD3 — Digital I/O / peripheral pin |
| Pin 49 | RD4 — Digital I/O / peripheral pin |
| Pin 50 | RD5 — Digital I/O / peripheral pin |
| Pin 51 | RD6 — Digital I/O / peripheral pin |
| Pin 52 | RD7 — Digital I/O / peripheral pin |
| Pin 53 | RD8 — Digital I/O / peripheral pin |
| Pin 54 | RD9 — Digital I/O / peripheral pin |
| Pin 55 | RD10 — Digital I/O / peripheral pin |
| Pin 56 | RD11 — Digital I/O / peripheral pin |
| Pin 57 | RD12 — Digital I/O / peripheral pin |
| Pin 58 | RD13 — Digital I/O / peripheral pin |
| Pin 59 | RD14 — Digital I/O / peripheral pin |
| Pin 60 | RD15 — Digital I/O / peripheral pin |
| Pin 61 | AVDD — Analog power supply |
| Pin 62 | AVSS — Analog ground |
| Pin 63 | VDD — Power supply |
| Pin 64 | VSS — Ground |
Typical Applications
DSPIC33EP128MU506-H/PT is suitable for 6 applications: Brushless DC Motor Control, USB-Connected Industrial Instrumentation, Digital Power Supply Control, Automotive Sensor Interface, Embedded Audio Processing, Smart Actuator and Robotics Control.
Brushless DC Motor Control
The DSPIC33EP128MU506-H/PT fits BLDC motor control because its motor control PWM (MC PWM) module generates complementary PWM pairs with programmable dead time, while the 12-bit ADC samples phase currents synchronously with the PWM cycle. The 70 MIPS dsPIC33E core executes field-oriented control loops and Park/Clarke transforms in real time, and the QEI decodes rotor position from an incremental encoder. Three on-chip op-amps condition shunt-resistor signals without external amplifiers, reducing BOM count. A typical implementation uses the MC PWM to drive a three-phase inverter, the ADC to sample two shunt currents, and the PTG to trigger conversions at precise instants. The trade-off is that the integrated op-amps have limited bandwidth compared with dedicated current-sense amplifiers, so high-frequency ripple rejection must be handled in firmware.
Recommended
USB-Connected Industrial Instrumentation
The DSPIC33EP128MU506-H/PT integrates a USB module, making it suitable for USB-connected industrial instruments such as data loggers, sensor interfaces, and portable test equipment. The 12-bit ADC digitizes sensor signals, the three op-amps provide gain and buffering, and the USB peripheral handles device-class communication with a host PC. The 128 KB Flash stores calibration tables and firmware, while the 16 KB RAM buffers acquisition data. In a typical design, the ADC samples at up to its rated throughput, the core applies digital filtering, and the USB endpoint transfers results to the host. The trade-off is that USB firmware stack overhead consumes CPU cycles, so the 70 MIPS core budget must be shared between acquisition and communication tasks.
Recommended
Digital Power Supply Control
The DSPIC33EP128MU506-H/PT supports digital power conversion because its high-resolution MC PWM, fast 12-bit ADC, and 70 MIPS core enable closed-loop control of DC-DC and AC-DC converters. The PTG triggers ADC conversions at precise points in the PWM cycle, and the DSP engine computes compensator transfer functions in real time. The three op-amps can buffer feedback signals, and the CAN interface allows multi-converter coordination. A typical implementation uses the MC PWM to drive the power stage, the ADC to sample output voltage and inductor current, and a digital compensator in firmware. The trade-off is that digital control adds latency compared with analog control, so loop bandwidth must be designed around the ADC and computation delays.
Recommended
Automotive Sensor Interface
The DSPIC33EP128MU506-H/PT is suited to automotive sensor interface designs because the -H high-temperature grade supports operation up to +150C, and the integrated CAN peripheral connects to in-vehicle networks. The 12-bit ADC and three op-amps condition analog sensor signals, while the CTMU supports capacitive touch and proximity sensing. The 128 KB Flash and 16 KB RAM provide headroom for sensor fusion algorithms. In a typical design, the ADC samples multiple sensor channels, the core applies calibration and filtering, and the CAN module transmits results to the vehicle bus. The trade-off is that the high-temperature grade has tighter oscillator tolerance, so external clock sources may be required for CAN timing accuracy.
Recommended
Embedded Audio Processing
The DSPIC33EP128MU506-H/PT can perform embedded audio processing because the dsPIC33E core includes a DSP engine with a 40-bit accumulator and single-cycle multiply-accumulate, enabling real-time digital filters and audio effects. The 12-bit ADC digitizes analog audio inputs, and the SPI or I2C interfaces connect to external audio codecs. The 128 KB Flash stores filter coefficients and firmware, while the 16 KB RAM buffers audio samples. A typical implementation samples audio at 48 kHz, applies biquad filters or equalization, and streams the result to a codec. The trade-off is that the 12-bit ADC limits dynamic range compared with dedicated audio converters, so external codecs are preferred for high-fidelity designs.
Recommended
Smart Actuator and Robotics Control
The DSPIC33EP128MU506-H/PT fits smart actuator and robotics control because it combines motor control PWM, QEI, CAN, and USB in one device, enabling distributed motion control nodes. The 70 MIPS core runs position and velocity loops, the QEI reads encoder feedback, and the CAN interface synchronizes multiple actuators on a network. The three op-amps condition current-sense signals, and the 12-bit ADC samples them synchronously with PWM. In a typical design, the node receives motion commands over CAN, executes a closed-loop position controller, and drives a BLDC or stepper motor. The trade-off is that integrating communication and motion control on one core requires careful task scheduling to avoid loop jitter.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33EP128MU506-H/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33EP128MU506-H/MR | DSPIC33EP128MU506-E/PT | DSPIC33EP128MU504-H/PT | DSPIC33EP128MC506 |
|---|---|---|---|---|---|
| Package | 64-pin TQFP (10x10x1 mm) | 64-pin QFN | 64-pin TQFP | 64-pin TQFP | 64-pin TQFP |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory | 128 KB Flash | 128 KB Flash | 128 KB Flash | 128 KB Flash | 128 KB Flash |
| RAM | 16 KB | 16 KB | 16 KB | 16 KB | 16 KB |
| CPU Speed | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS |
| Motor Control PWM | Yes | Yes | Yes | Yes | Yes |
Key Differentiators
- Integrated USB plus motor control peripherals (vs DSPIC33EP128MC506)
- High-temperature -H grade (vs DSPIC33EP128MU506-E/PT)
- Three integrated op-amps (vs DSPIC33EP128MU504-H/PT)
- Full peripheral set in 64-pin TQFP (vs DSPIC33EP128MU506-H/MR)
Design Notes
Decouple VDD pins with 0.1 uF ceramic capacitors placed within 5 mm of each pin, and add a 10 uF bulk capacitor near the device. The AVDD pin requires a separate low-pass filter (ferrite bead plus 0.1 uF and 10 uF capacitors) to keep switching noise out of the 12-bit ADC reference. Estimated: at 70 MIPS and 3.3 V, core current is typically in the tens of milliamps, so a 100 mA LDO is adequate for the digital rail, but the analog rail should use a separate low-noise regulator to preserve ADC accuracy.
Route the analog input traces away from the MC PWM output traces to minimize crosstalk into the 12-bit ADC. Keep the op-amp input traces short and guard them with ground pours. Place the ADC reference decoupling capacitor directly between the VREF pins. For the 64-pin TQFP, use a solid ground plane under the device and connect all VSS pins with thermal-relief vias to reduce ground bounce during high-speed PWM switching.
The -H high-temperature grade supports operation up to +150C junction temperature. Estimated: at 3.3 V and 70 MIPS with all peripherals active, power dissipation is roughly 150-250 mW depending on peripheral usage. The 64-pin TQFP has a theta_JA of approximately 45-50 C/W without airflow, so the junction rise above ambient is modest. For ambient above +105C, add thermal vias under the package and verify the junction temperature with the Microchip thermal model.
Do not leave the AVDD/AVSS pins unconnected or tied to the digital supply without filtering, because ADC accuracy degrades significantly. When migrating firmware between dsPIC33E variants, verify that peripheral instance names and pin mappings match the target device, since the MU and MC series differ in USB and CAN availability. Always confirm the -H versus -E temperature grade suffix when ordering, because the two grades are not interchangeable in high-temperature designs.
Compliance Information
Compliance data was not present in the verified web data for this MPN. Confirm RoHS, REACH, and lead-free status with Microchip or an authorized distributor before production.
