DSPIC33EP128MU206-I/PT - 16-bit DSC 128KB Flash 70MIPS | Microchip
MPN: DSPIC33EP128MU206-I/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.2 | $6.20 |
| 10 | $5.58 | $55.80 |
| 100 | $4.96 | $496.00 |
| 500 | $4.34 | $2,170.00 |
| 1,000 | $3.91 | $3,910.00 |
DSPIC33EP128MU206-I/PT Overview
A digital signal controller combines the computational power of a DSP core with the peripheral integration and ease of use of a microcontroller. Within the power-management hierarchy, the dsPIC33EP family sits under Microchip's 16-bit architecture family, which descends from the broader digital signal processor product category. DSCs are widely used wherever real-time math-intensive control loops meet general-purpose I/O, such as motor control, digital power conversion, and embedded sensing.
Key features of this part include the 16-bit dsPIC33E core running up to 70 MIPS at 3.3V, an internal fast RC oscillator with PLL for flexible clocking, a 12-bit ADC with multiple sample-and-hold channels, USB OTG support characteristic of the MU sub-family, multiple UART, SPI, and I2C serial ports, and hardware DSP multiply-accumulate instructions for filtering and control algorithms. Embedded flash supports in-circuit self-programming.
Architecturally, the dsPIC33E core uses a modified Harvard bus with dedicated DSP engine, single-cycle MAC, and dual operand fetch, enabling efficient execution of PID loops, FFTs, and FIR/IIR filters. Peripheral Trigger Generator and DMA resources offload CPU bandwidth, keeping deterministic response in closed-loop control applications such as field-oriented motor drive.
Typical applications include BLDC and PMSM motor control, digital SMPS and LED drivers, USB-connected industrial sensors, medical and portable instrumentation, and general embedded control requiring DSP-class math.
Design consideration: budget the internal regulator and decoupling per the manufacturer datasheet, and verify USB timing against the system oscillator configuration.
This page synthesizes distributor pricing context, drop-in same-family alternatives, and practical design notes not consolidated in the manufacturer datasheet.
Drop-in alternatives for DSPIC33EP128MU206-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 DSPIC33EP128MU206-I/PT (same form factor and footprint) — differing in Package, Core, Supply Voltage, Timers, Operating Temperature.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33EP256MU206-I/PT
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP64MU206-I/PT
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP128MU206T-I/PT
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$4.85 / Unit
View Datasheet →DSPIC33EP128MC206-I/PT
✅ Drop-In✓ In Stock
$3.95 / Unit
View Datasheet →DSPIC33EP128GM306-E/PT
✅ Drop-In✓ In Stock
$6.15 / Unit
View Datasheet →DSPIC33EP128MU204T-I/PT
✅ Drop-In✓ In Stock
$3.32 / Unit
View Datasheet →DSPIC33EP128MU206-I/PT Maximum Ratings & Electrical Characteristics
| Core Processor | dsPIC33E 16-bit DSC core |
| Core Size | 16-bit |
| Max CPU Speed | 70 MIPS |
| Program Memory Size | 128 KB Flash |
| RAM Size | 16 KB |
| ADC Resolution | 12-bit |
| Operating Temperature | -40C to +85C (I grade) |
| Package | 64-pin TQFP (PT) |
| Mounting Type | Surface Mount |
| USB | USB 2.0 OTG (MU sub-family) |
| Oscillator Type | Internal Fast RC + PLL, external crystal |
| Base Product Number | DSPIC33EP128MU206 |
| Packaging | Tray |
| Series | dsPIC33EP |
DSPIC33EP128MU206-I/PT Pin Configuration
| Pin 1 | MCLR — Master clear reset input / programming voltage |
| Pin 2 | AN0/CN2B/RB0 — Analog input 0 / change notification / port B |
| Pin 3 | AN1/CN3B/RB1 — Analog input 1 / change notification / port B |
| Pin 4 | AN2/SS1/CN4B/RB2 — Analog input 2 / SPI slave select / port B |
| Pin 5 | AN3/CN5B/RB3 — Analog input 3 / port B |
| Pin 6 | AN4/C1IN-/CN6B/RB4 — Analog input 4 / comparator input / port B |
| Pin 7 | AN5/C1IN+/CN7B/RB5 — Analog input 5 / comparator input / port B |
| Pin 8 | VSS — Ground reference |
| Pin 9 | OSC1/CLKI/CN30/RA2 — Oscillator crystal input / external clock |
| Pin 10 | OSC2/CLKO/CN29/RA3/RC15 — Oscillator crystal output / clock output |
| Pin 11 | RG8/CN11 — General purpose I/O port G |
| Pin 12 | RG9/CN12 — General purpose I/O port G |
| Pin 13 | VDD — Positive supply |
| Pin 14 | RG6/SDO2/CN4 — SPI2 data out / port G |
| Pin 15 | RG7/SCK2/INT0/CN5 — SPI2 clock / external interrupt 0 / port G |
| Pin 16 | VCAP/VDDCORE — Core regulator capacitor connection |
| Pin 17 | AN6/RG0 — Analog input 6 / port G |
| Pin 18 | AN7/RG1 — Analog input 7 / port G |
| Pin 19 | AN8/RG2/PWM1L — Analog input 8 / port G / PWM output |
| Pin 20 | AN9/RG3/PWM1H — Analog input 9 / port G / PWM output |
| Pin 21 | VSS — Ground reference |
| Pin 22 | AN10/CVref/RC0/PWM2L — Analog input 10 / comparator voltage reference / port C |
| Pin 23 | AN11/C2IN+/RC1/PWM2H — Analog input 11 / comparator input / port C |
| Pin 24 | AN12/C2IN-/RC2/PWM3L — Analog input 12 / comparator input / port C |
| Pin 25 | AN13/RC3/PWM3H — Analog input 13 / port C |
| Pin 26 | VDD — Positive supply |
| Pin 27 | SOSCI/CN1/RC13 — Secondary oscillator input / port C |
| Pin 28 | SOSCO/T1CK/CN0/RC14 — Secondary oscillator output / Timer1 clock / port C |
| Pin 29 | RF4/U1RX/SDI1/CN17 — UART1 receive / SPI1 data in / port F |
| Pin 30 | RF5/U1TX/SDO1/CN18 — UART1 transmit / SPI1 data out / port F |
| Pin 31 | VBUS — USB bus voltage sense |
| Pin 32 | RD8/RP56 — Remappable peripheral pin / port D |
| Pin 33 | VDD — Positive supply |
| Pin 34 | RD9/RP57 — Remappable peripheral pin / port D |
| Pin 35 | RD10/RP58 — Remappable peripheral pin / port D |
| Pin 36 | RD11/RP59 — Remappable peripheral pin / port D |
| Pin 37 | RD12/RP60 — Remappable peripheral pin / port D |
| Pin 38 | RD13/RP61 — Remappable peripheral pin / port D |
| Pin 39 | VSS — Ground reference |
| Pin 40 | RD0/RP64 — Remappable peripheral pin / port D |
| Pin 41 | RD1/RP65 — Remappable peripheral pin / port D |
| Pin 42 | RD2/RP66 — Remappable peripheral pin / port D |
| Pin 43 | RD3/RP67 — Remappable peripheral pin / port D |
| Pin 44 | RD4/RP68 — Remappable peripheral pin / port D |
| Pin 45 | RD5/RP69 — Remappable peripheral pin / port D |
| Pin 46 | RD6/RP70 — Remappable peripheral pin / port D |
| Pin 47 | RD7/RP71 — Remappable peripheral pin / port D |
| Pin 48 | D+/RP54/RF3 — USB data plus / remappable pin / port F |
| Pin 49 | D-/RP55/RF2 — USB data minus / remappable pin / port F |
| Pin 50 | RF6/U2RX/SDI2/CN19 — UART2 receive / SPI2 data in / port F |
| Pin 51 | RF7/U2TX/SDO2/CN20 — UART2 transmit / SPI2 data out / port F |
| Pin 52 | RF8/U3RX/SDI3/CN21 — UART3 receive / SPI3 data in / port F |
| Pin 53 | RF1/U3TX/SDO3/CN16 — UART3 transmit / SPI3 data out / port F |
| Pin 54 | RF0/CN15 — General purpose I/O port F |
| Pin 55 | RF13/U4RX/SCK3/CN14 — UART4 receive / SPI3 clock / port F |
| Pin 56 | RF12/U4TX/SS3/CN13 — UART4 transmit / SPI3 slave select / port F |
| Pin 57 | RA14/T2CK — Port A / Timer2 external clock |
| Pin 58 | RA15/T3CK — Port A / Timer3 external clock |
| Pin 59 | VSS — Ground reference |
| Pin 60 | RB14/VREF-/AN14 — ADC negative voltage reference / analog input 14 / port B |
| Pin 61 | RB15/VREF+/AN15 — ADC positive voltage reference / analog input 15 / port B |
| Pin 62 | RB12/AN12 — Analog input 12 / port B |
| Pin 63 | RB13/AN13 — Analog input 13 / port B |
| Pin 64 | RB11/AN11/RTCC — Analog input 11 / RTCC alarm output / port B |
Typical Applications
DSPIC33EP128MU206-I/PT is suitable for 6 applications: BLDC and PMSM Motor Control, USB-Connected Industrial Sensors, Digital Power Conversion and SMPS, Portable and Battery-Powered Instrumentation, Audio Signal Processing, General Embedded Control with DSP Needs.
BLDC and PMSM Motor Control
The DSPIC33EP128MU206-I/PT fits sensorless and sensored motor drives because its 70 MIPS dsPIC33E core executes field-oriented control at loop rates of 10-20 kHz with single-cycle MAC math. The 12-bit ADC samples phase currents within microseconds of PWM triggers, enabling accurate FOC torque control. Firmware for sinusoidal and trapezoidal commutation fits comfortably in the 128 KB flash alongside diagnostics. Note that for USB-less motor-control designs, the pin-compatible DSPIC33EP128MC206 variant provides an enhanced PWM peripheral mix; either part shares the 64-TQFP footprint so the PCB layout carries over.
Recommended
USB-Connected Industrial Sensors
Because the MU sub-family integrates USB 2.0 OTG, the DSPIC33EP128MU206-I/PT acts as a single-chip USB device or host for industrial sensing nodes - digital weight scales, bench instruments, and condition-monitoring probes. Sensor data is filtered on-chip using hardware DSP instructions and streamed over USB virtual COM or HID classes, removing a separate USB bridge chip from the BOM. The -40C to +85C industrial temperature grade matches factory-floor enclosures. A practical trade-off: USB needs a stable 48 MHz clock derived from crystal plus PLL, so budget the oscillator error margin in your USB compliance testing.
Recommended
Digital Power Conversion and SMPS
The DSPIC33EP128MU206-I/PT implements digital control loops for AC-DC and DC-DC converters, LED drivers, and battery chargers. Its 70 MIPS core closes voltage and current loops at switching frequencies up to a few hundred kilohertz, while the 12-bit ADC with flexible trigger timing synchronizes sampling to PWM edges for accurate average-current sensing. The 128 KB flash stores multiple operating profiles and compensation tables. For purely digital-power sockets without USB, designers commonly drop in the pin-compatible DSPIC33EP128MC206, whose peripheral emphasis is tuned for switching power stages.
Recommended
Portable and Battery-Powered Instrumentation
Handheld meters, data loggers, and portable medical accessories benefit from the DSPIC33EP128MU206-I/PT's combination of DSP throughput and integrated USB, letting one 16-bit DSC handle signal conditioning, FFT analysis, and PC connectivity. The 16 KB RAM buffers waveform windows for spectral processing, and self-programmable 128 KB flash supports field firmware upgrades over USB. Low-power sleep and idle modes reduce average current in duty-cycled designs. Engineers should verify the device's stop-current figures against their battery budget - consult the manufacturer datasheet power tables rather than assuming typical MCU sleep numbers.
Recommended
Audio Signal Processing
The hardware DSP MAC engine of the DSPIC33EP128MU206-I/PT executes FIR and IIR filtering, sample-rate conversion, and basic audio effects at consumer audio rates, making it a cost-effective host for embedded sound features in appliances, intercoms, and kiosk systems. The 12-bit ADC digitizes microphone or line inputs, and multiple SPI/UART ports interface audio codecs or DACs. The 70 MIPS core leaves instruction headroom for UI and communications firmware. For high-fidelity applications, add an external codec - the on-chip 12-bit converter is targeted at control and communication quality, not hi-fi THD budgets.
Recommended
General Embedded Control with DSP Needs
Many designs need a microcontroller plus occasional heavy math - PID with adaptive gains, FFT-based vibration checks, or cryptographic-style loops. The DSPIC33EP128MU206-I/PT covers this in one chip: general-purpose parallel and remappable peripheral pins handle switches, displays, and legacy buses, while the DSP engine accelerates math routines. The 64-pin TQFP offers roughly 50 usable I/O for system integration, and MPLAB X with XC16 provides a mainstream toolchain. Flash self-programming enables in-field feature updates, and the industrial -40C to +85C rating suits uncontrolled environments.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33EP128MU206-I/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33EP256MU206-I/PT | DSPIC33EP64MU206-I/PT | DSPIC33EP128MC206-I/PT | DSPIC33EP128GM306-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 |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Program Memory | 128 KB | 256 KB | 64 KB | 128 KB | 128 KB |
| Max CPU Speed | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS |
| USB OTG | Yes | Yes | Yes | No | No |
| ADC Resolution | 12-bit | 12-bit | 12-bit | 12-bit | 12-bit |
| Operating Temperature | -40C to +85C (I) | -40C to +85C (I) | -40C to +85C (I) | -40C to +85C (I) | -40C to +125C (E) |
| Target Application Focus | USB + general DSP control | USB + larger firmware | Cost-optimized USB | Motor control / digital power | High-temp industrial |
Key Differentiators
- Integrated USB 2.0 OTG on-chip (vs DSPIC33EP128MC206-I/PT)
- Flash capacity scalability on the same footprint (vs DSPIC33EP256MU206-I/PT)
- Extended temperature option in same package (vs DSPIC33EP128GM306-E/PT)
- Cost advantage for smaller firmware (vs DSPIC33EP256MU206-I/PT)
Design Notes
The dsPIC33EP family uses an internal core regulator - connect the required low-ESR capacitor on the VCAP/VDDCORE pin (pin 16) per the manufacturer datasheet value; do not drive this pin externally. Decouple each VDD pin pair with 0.1 uF ceramics placed within 2 mm of the pin, plus one bulk 4.7-10 uF per supply domain. Estimated: at 70 MIPS with typical core current figures from the family datasheet, expect tens of milliamps total - size the 3.3V rail regulator accordingly with margin for USB load.
For the 64-TQFP, create a solid ground plane under the device and stitch the VSS pins directly to it with short vias. Route the USB D+/D- (pins 48/49) as a 90-ohm differential pair of matched length, avoiding stubs and crossings over splits. Keep analog input traces (AN0-AN15) short and away from PWM or clock lines; use VREF+/VREF- (pins 60/61) fed from a clean reference for better ADC accuracy. Follow the Microchip 16-bit MCU PCB layout guidance in the family design documentation.
Common pitfalls with dsPIC33EP parts: (1) forgetting MCLR pull-up (4.7-10k) and enabling MCLR reset can leave the device in an undefined state at power-up; (2) misconfiguring the PLL prescaler/postscaler so VCO exceeds datasheet limits - always verify FOSC against the oscillator calculator in MPLAB; (3) exceeding peripheral pin remap conflicts on RPn pins - validate the PPS assignment table before layout freeze; (4) USB designs failing compliance because crystal tolerance is outside the 48 MHz USB clock budget. Review configuration fuses checklist before first silicon bring-up.
Minimize ground bounce on PWM outputs driving MOSFET gate drivers by giving each PWM-H/L pair a dedicated return path and adding small series resistors (10-22 ohm) at gate pins. The 70 MIPS core switching noise can couple into the 12-bit ADC; insert an RC anti-alias filter on analog channels (e.g., 1k + 1 nF, Estimated corner ~159 kHz - verify against your signal bandwidth) and sample synchronously with PWM edges using the ADC trigger feature rather than free-running sampling.
Compliance Information
Microchip standard catalog parts are RoHS/lead-free. REACH and conflict-minerals status based on Microchip corporate compliance policies; obtain material declarations from Microchip's product page for the exact MPN. Not an automotive AEC-Q100 device.
