DSPIC33EP128MU506T-I/PT - 16-bit DSC 128KB Flash | Microchip
MPN: DSPIC33EP128MU506T-I/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.8 | $6.80 |
| 10 | $6.15 | $61.50 |
| 100 | $5.55 | $555.00 |
| 500 | $5.05 | $2,525.00 |
| 1,000 | $4.6 | $4,600.00 |
DSPIC33EP128MU506T-I/PT Overview
A digital signal controller combines the architecture of a microcontroller (flash memory, general-purpose I/O, timers) with the numeric processing capability of a digital signal processor (hardware multiply-accumulate, DSP instruction set, high-throughput core). In the power-management hierarchy, the DSC sits between a general-purpose MCU and a dedicated DSP: it runs real-time control loops (motor FOC, digital power conversion) while simultaneously managing communication, USB enumeration, and system supervision in a single chip.
Key features of the MU506 variant include the 128 KB self-programmable flash array, an integrated full-speed USB 2.0 OTG peripheral (a defining feature of the MU subfamily versus the MC variant), multiple UART, SPI, and I2C modules, PWM output-compare channels, an ADC block, and In-Circuit Serial Programming (ICSP) support for field updates. The 'T' suffix denotes tape-and-reel packaging for automated assembly; 'I' denotes the industrial temperature range.
The dsPIC33E core is built around a modified Harvard architecture with a 16-bit data path, supporting 16 x 16 multiply and DSP MAC operations suited to control-law computation. Peripheral trigger-based DMA paths offload data movement from the CPU, which is important in motor control and USB streaming applications where interrupt latency must remain deterministic.
Typical applications include USB-connected industrial instruments, digital power supplies and battery chargers, brushless DC and PMSM motor controllers, and general-purpose sensing nodes that must report data over USB. The combination of a DSP-capable core and native USB distinguishes it from PIC16-class controllers.
Design consideration: flash size is fixed at 128 KB and cannot be extended, so headroom for firmware growth, USB stacks, and bootloaders should be budgeted at design time; if more memory is needed, pin-compatible DS33EP256MU506 variants in the same TQFP-64 footprint double the flash.
This page synthesizes distributor availability data, drop-in alternative options, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for DSPIC33EP128MU506T-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 DSPIC33EP128MU506T-I/PT (same form factor and footprint) — differing in Package, Packaging, Operating Temperature, RoHS Status.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33EP128MU504-H/PT
✅ Drop-In✓ In Stock
$4.48 / Unit
View Datasheet →DSPIC33EP128MU506-E/PT
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$4.3 / Unit
View Datasheet →DSPIC33EP128MC506-I/PT
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP128GM606-I/PT
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP256MU506-I/PT
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP128MU506T-I/PT Maximum Ratings & Electrical Characteristics
| Core Architecture | 16-bit dsPIC33E DSC |
| Flash Program Memory | 128 KB |
| Package | TQFP-64 (PT) |
| Operating Temperature Range | -40C to +85C (Industrial, I suffix) |
| Packaging | Tape and Reel (T suffix) |
| USB | USB 2.0 OTG (MU subfamily) |
| Mounting Type | Surface Mount |
| Product Family | dsPIC33EP128MU50x |
| Programming Interface | ICSP (In-Circuit Serial Programming) |
| RoHS Status | unknown |
DSPIC33EP128MU506T-I/PT tqfp-64 (pt) Pin Configuration Guide
Pin configuration for DSPIC33EP128MU506T-I/PT (tqfp-64 (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 DSPIC33EP128MU506T-I/PT.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33EP128MU506T-I/PT is suitable for 6 applications: USB-Connected Industrial Instruments, Digital Power Supplies and Battery Chargers, BLDC and PMSM Motor Controllers, USB Data Loggers and Sensing Nodes, USB Audio and HID Accessories, Test and Measurement Fixtures.
USB-Connected Industrial Instruments
The MU506's integrated USB 2.0 OTG peripheral and 128 KB flash let an instrument enumerate as a USB device (CDC/serial or HID) without any external USB interface chip. The 16-bit dsPIC33E core handles sensor acquisition and signal conditioning while the USB endpoint buffers stream measurement data to a host PC. A typical topology uses the ADC sampling a transducer, DMA moving results to RAM, and the USB stack transmitting packets under interrupt control. This reduces BOM cost and board area versus an MCU-plus-USB-bridge two-chip solution, at the cost of firmware complexity for the USB stack.
Recommended
Digital Power Supplies and Battery Chargers
The dsPIC33E core's DSP multiply-accumulate instructions execute digital control-loop compensators (PI/PID or 2p2z) at fixed sample rates suited to buck, boost, and LLC converter control. PWM output-compare peripherals generate switching waveforms with fine duty-cycle resolution, and the ADC can be triggered precisely at PWM intervals for average-current sampling - the classic digital-power sampling topology. The 128 KB flash accommodates compensator code, housekeeping firmware, and communication protocols simultaneously. An Estimated advantage of this integrated approach is single-chip control, but designers must budget CPU cycles carefully at high switching frequencies.
Recommended
BLDC and PMSM Motor Controllers
Motor control exploits the deterministic interrupt response and hardware MAC capability of the dsPIC33E core for field-oriented control (FOC) of brushless DC and permanent-magnet synchronous motors. PWM modules drive a three-phase inverter, ADC channels sample phase currents via shunts or sensors synchronized to PWM centers, and quadrature-encoder interface inputs accept position feedback. The 128 KB flash provides room for the FOC engine plus fieldbus or USB commissioning interfaces - a differentiator versus smaller parts. Note that for pure motor control without USB, the pin-compatible MC subfamily offers an even more motor-optimized peripheral set on the same footprint.
Recommended
USB Data Loggers and Sensing Nodes
A sensing node built around the MU506 samples analog channels with the on-chip ADC, timestamps and buffers records in the on-chip RAM, and offloads data over the USB OTG port when a host connects. Battery-powered operation benefits from the DSC's low-power sleep and idle modes between sampling intervals. The 64-pin TQFP exposes enough general-purpose I/O to drive multiple sensor interfaces (I2C, SPI, UART) concurrently, so one device can aggregate temperature, pressure, and current channels. Firmware volume - sensor drivers plus a USB mass-storage or CDC stack - fits comfortably within the 128 KB flash array with headroom for OTA-style updates.
Recommended
USB Audio and HID Accessories
The full-speed USB OTG peripheral supports HID-class operation for buttons, encoders, and control surfaces, and can implement low-rate audio streaming when paired with an external codec over I2S-capable serial ports. The 16-bit core keeps interrupt latency predictable, which matters for USB transaction timing and endpoint servicing. Microchip's USB framework provides HID and CDC class stacks that fit within the 128 KB flash alongside application logic. This application suits the MU506 when the accessory also needs real-time sensing or actuation; for high-fidelity audio, an external codec IC handles the conversion path while the DSC manages USB and control.
Recommended
Test and Measurement Fixtures
Production test fixtures and bench instruments use the MU506 to sequence stimulus, capture analog responses, and report results to a PC over USB CDC. The ADC measures DUT outputs while PWM/compare peripherals generate test stimulus waveforms; digital I/O handles relay control and pass/fail signaling. The industrial -40C to +85C rating tolerates unconditioned factory-floor environments, and ICSP allows firmware updates as test procedures evolve. With 128 KB flash, the controller can store multiple test scripts locally, executing them headless when no host is attached - a practical advantage over USB-bridge-based fixture designs.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33EP128MU506T-I/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33EP128MU504-H/PT | DSPIC33EP128MU506-E/PT | DSPIC33EP128MC506-I/PT | DSPIC33EP128GM606-I/PT | DSPIC33EP256MU506-I/PT |
|---|---|---|---|---|---|---|
| Package | TQFP-64 (PT) | TQFP-64 (PT) - same | TQFP-64 (PT) - same | TQFP-64 (PT) - same | TQFP-64 (PT) - same | TQFP-64 (PT) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Program Memory | 128 KB | 128 KB | 128 KB | 128 KB | 128 KB | 256 KB |
| USB OTG | Yes (USB 2.0 OTG) | Yes (USB 2.0 OTG) | Yes (USB 2.0 OTG) | No | Yes (per GM subfamily) | Yes (USB 2.0 OTG) |
| Core | 16-bit dsPIC33E DSC | 16-bit dsPIC33E DSC | 16-bit dsPIC33E DSC | 16-bit dsPIC33E DSC | 16-bit dsPIC33E DSC | 16-bit dsPIC33E DSC |
| Temperature Range | -40C to +85C (Industrial) | -40C to +150C (H grade, per suffix) | -40C to +125C (Extended/E grade) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) |
| Peripheral Focus | USB + general-purpose analog/communications | USB + general-purpose (fewer channels) | Identical to this product | Motor control optimized, no USB | Digital power: high-res PWM, more communications | Identical to this product, more memory |
| Drop-in Feasibility | Reference | Drop-in if unused MU506 extra channels not required | True drop-in - identical die | Drop-in only if USB unused | Drop-in only with firmware/peripheral remap | True drop-in upgrade (more flash) |
Key Differentiators
- Native USB 2.0 OTG in a 64-pin TQFP (vs DSPIC33EP128MC506-I/PT)
- Full MU506 peripheral channel set (vs DSPIC33EP128MU504-H/PT)
- Extended-temperature variant available on the same footprint (vs DSPIC33EP128MU506-E/PT)
- Memory-limited versus 256 KB sibling (vs DSPIC33EP256MU506-I/PT)
Design Notes
dsPIC33EP devices in the MU506 family operate from a single 3.3 V rail. Decouple every VDD pin pair of the 64-pin TQFP with 0.1 uF ceramic capacitors placed within 3 mm of the pins, plus one bulk 10 uF capacitor near the supply entry. The USB transceiver requires a separate 3.3 V supply on the VUSB3V3 pin - do not power it from a long shared trace, as USB eye-diagram compliance degrades with supply noise. Estimated: allow 200 mV of supply margin headroom above the device minimum for transient droop during simultaneous peripheral switching.
For the TQFP-64 footprint, route the USB D+/D- pair as a controlled-impedance differential pair (90 ohm differential is the common target for full-speed USB) with length matching and a continuous ground reference plane beneath. Keep the ICSP programming pins (PGD/PGC) on a 5-pin header with series 100 ohm resistors so production programmers can share the pins with application circuitry. Place the MCLR pull-up (approximately 10 kohm to VDD) close to the device and bring the pin to the programming header.
The MU506 shares pins between analog functions, communications peripherals, and general-purpose I/O via the Peripheral Pin Select (PPS) remapping system - firmware must configure PPS registers before the corresponding modules are used, and incorrect mapping is a leading cause of 'dead peripheral' field failures. Additionally, the analog supply pins (AVDD/AVSS) must be connected and filtered even in mostly-digital designs; leaving them floating causes ADC and internal-reference instability. Budget flash carefully: 128 KB must hold the application plus the USB stack and any bootloader.
Compliance Information
Compliance data was not present in the provided verified web data; confirm RoHS/REACH status on the Microchip product page or MicrochipDirect environmental data before procurement.
