DSPIC33EP128MC204-I/ML - 16-bit DSC 70 MIPS 128KB Flash | Microchip
MPN: DSPIC33EP128MC204-I/ML ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.62 | $4.62 |
| 10 | $4.16 | $41.60 |
| 100 | $3.71 | $371.00 |
| 500 | $3.34 | $1,670.00 |
| 1,000 | $2.98 | $2,980.00 |
DSPIC33EP128MC204-I/ML Overview
A digital signal controller combines the compute throughput of a DSP with the peripheral integration and control architecture of a microcontroller. Within the embedded hierarchy, the DSC sits between general-purpose MCUs and dedicated DSPs, making the dsPIC33E family a common choice for closed-loop control systems that need both fast math and rich on-chip analog and timing peripherals.
Key features include high-speed PWM modules tailored for motor control, integrated op amps and advanced analog peripherals, multiple UART/SPI/I2C communication ports, and a DSP engine with single-cycle MAC and dual operand fetch. The 70 MIPS core executes C-compiled control loops with deterministic latency, critical for field-oriented control of motors.
Architecturally, the dsPIC33EP core is a 16-bit modified Harvard machine with pipelined instruction execution and hardware DSP multiply-accumulate, supported by the Compiler for dsPIC DSCs and MPLAB X IDE toolchain. Programming and debugging use ICSP via any matched PGECx/PGEDx pin pair.
Typical applications include precision brushless DC and PMSM motor drives, digital power supplies, sensor fusion nodes, and industrial automation controllers.
Design consideration: connect all VDD/VSS pairs and choose one PGEC/PGED pair consistently for ICSP; mismatched PGEC/PGED pairs will prevent programming.
This page synthesizes distributor pricing, drop-in family alternatives, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for DSPIC33EP128MC204-I/ML — 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 DSPIC33EP128MC204-I/ML (same form factor and footprint) — differing in Operating Temperature, Package, Core, Program Memory (Flash), RAM.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33EP128MC204-E/ML
✅ Drop-In✓ In Stock
$4.6 / Unit
View Datasheet →DSPIC33EP256MC204-I/ML
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$3.4 / Unit
View Datasheet →DSPIC33EP64MC204-I/ML
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$3.6 / Unit
View Datasheet →DSPIC33EP32MC204-I/ML
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$2.05 / Unit
View Datasheet →DSPIC33EP128GP204-I/ML
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP128MC204-I/ML Maximum Ratings & Electrical Characteristics
| Core | dsPIC33E 16-bit DSC core |
| Core Performance | 70 MIPS |
| CPU Speed | 60 MHz (per Mouser listing) |
| Program Memory (FLASH) | 128 KB (43K x 24) |
| RAM | 16 KB |
| Data Bus Width | 16 bit |
| Package | 44-QFN (8x8 mm) |
| Pin Count | 44 |
| Mounting Type | Surface Mount |
| Operating Temperature | -40C to +85C (industrial, -I grade) |
| Peripherals | High-speed PWM, op amps, advanced analog, DSP engine |
| Programming Interface | ICSP (multiple PGECx/PGEDx pairs, use as matched pair) |
| Programming Support | NSDSP-1, NSDSP-2, NSDSP-3 (per northernsoftware.com) |
| Lifecycle Risk | Low (per trustedparts.com) |
| Supply Chain Risk | Low-Med (per trustedparts.com) |
DSPIC33EP128MC204-I/ML 44-qfn (8x8 mm) Pin Configuration Guide
Pin configuration for DSPIC33EP128MC204-I/ML (44-qfn (8x8 mm) 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 DSPIC33EP128MC204-I/ML.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33EP128MC204-I/ML is suitable for 6 applications: BLDC Motor Control, Digital Power Supplies, Industrial Automation Controllers, Sensor Signal Processing, Embedded Networked Devices, Automotive Auxiliary Systems.
BLDC Motor Control
The DSPIC33EP128MC204-I/ML fits brushless DC motor drives because its MC-class peripheral set combines high-speed PWM outputs with integrated op amps and advanced analog channels for low-side current sensing. Running at 70 MIPS, the DSP core executes field-oriented control or trapezoidal commutation loops at switching frequencies well above the audible band, while the 128 KB FLASH holds the control firmware, commutation tables, and communication stack with headroom. In a typical three-phase inverter, the PWM modules gate the power stage while ADC-triggered current sampling closes the torque loop deterministically. The trade-off is that the 16-bit core leaves less numeric headroom than 32-bit competitors, but its mature motor-control libraries and deterministic interrupt latency make it a low-risk choice for fans, pumps, power tools, and e-mobility drives.
Recommended
Digital Power Supplies
Digital switching power supplies benefit from the DSPIC33EP128MC204-I/ML because its high-speed PWM peripherals support frequency, duty-cycle, and phase-shift modulation with fine resolution, while the 70 MIPS DSP core implements compensator equations (PID, 2P2Z, or 3P3Z) in fixed-point arithmetic with single-cycle MAC operations. The 128 KB FLASH accommodates soft-start sequencing, fault management, PMBus-style communication, and adaptive dead-time routines simultaneously. Integrated op amps condition current and voltage sense signals directly, reducing external component count in compact LLC, buck, or PFC stages. A key consideration is loop-update latency: deterministic interrupt response keeps the control bandwidth stable across line and load transients. For AC-DC and DC-DC designs needing firmware-updatable control laws, this DSC replaces analog compensation networks with configurable, field-tunable code.
Recommended
Industrial Automation Controllers
The DSPIC33EP128MC204-I/ML serves as a compact industrial node controller, combining multiple UART, SPI, and I2C interfaces for MODBUS-style fieldbus connectivity with a 70 MIPS core for real-time sequencing tasks. Its 128 KB FLASH stores protocol stacks, state machines, and local compensation logic, while the industrial -40C to +85C temperature grade matches factory-floor enclosure environments. The 44-pin QFN (8x8 mm) footprint keeps board area small in DIN-rail and distributed I/O modules where every square centimeter counts. Integrated analog peripherals handle sensor conditioning for proximity, temperature, and current feedback without a separate analog front end. Designers should note that all VDD/VSS pins must be connected and PGEC/PGED pairs kept matched for in-field firmware updates via ICSP, simplifying long-term maintenance of deployed automation equipment.
Recommended
Sensor Signal Processing
The integrated op amps and advanced analog peripherals of the DSPIC33EP128MC204-I/ML make it suitable for embedded sensor signal chains, where it amplifies, filters, and digitizes signals from pressure, current, or position sensors in one chip. The 70 MIPS DSP engine performs FIR/IIR filtering, FFT-based analysis, and calibration arithmetic with single-cycle multiply-accumulate throughput, at rates unattainable by general-purpose 8-bit MCUs at this price point. The 16 KB RAM buffers acquisition windows for windowed analysis, while 128 KB FLASH retains multi-point calibration tables and self-test routines. In vibration-monitoring or load-cell applications, the DSC converts raw sensor data into compensated engineering units locally, reducing host bandwidth and system latency. Layout hygiene matters: keep analog routing away from PWM switching nodes to preserve the effective number of bits from the on-chip ADC.
Recommended
Embedded Networked Devices
With multiple serial communication engines, the DSPIC33EP128MC204-I/ML acts as a protocol gateway or smart peripheral controller in networked embedded systems. Its 70 MIPS core sustains UART-based MODBUS, SPI-linked displays, and I2C sensor trees simultaneously, while the 128 KB FLASH holds a bootloader plus application image, enabling field firmware updates over the existing fieldbus - an important reliability feature for remotely deployed devices. The 44-pin QFN package provides enough I/O for keypad scanning, relay driving, and status indication in building control and metering subassemblies. The industrial temperature grade and low lifecycle risk reported by trustedparts.com support multi-year deployment commitments. When designing the ICSP header, remember that ICSPCLK and ICSPDAT must originate from the same PGEC/PGED pair, and all power pin pairs must be wired, or field updates will fail.
Recommended
Automotive Auxiliary Systems
The extended-temperature DSPIC33EP128MC204-E/ML variant, which shares the exact die and 44-QFN (8x8) footprint with this part, is used in automotive auxiliary electronics such as actuator control, pump and fan drivers, and sensor modules located outside the passenger cabin. Its high-speed PWM and integrated op amps drive motor and solenoid loads directly, while the 70 MIPS DSP core executes position-control and diagnostics software with deterministic timing needed for functional-safety reviews. The 128 KB FLASH accommodates UDS-style bootloader code alongside the application. For such designs, this industrial-grade -I part is appropriate for development boards and non-automotive variants, while the -E/ML sibling covers -40C to +125C under-hood ambient conditions. Note that neither variant is AEC-Q100 qualified by default, so verify qualification requirements with Microchip for safety-relevant positions.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33EP128MC204-I/ML — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33EP128MC204-E/ML | DSPIC33EP256MC204-I/ML | DSPIC33EP64MC204-I/ML | DSPIC33EP128GP204-I/ML |
|---|---|---|---|---|---|
| Package | 44-QFN (8x8) | 44-QFN (8x8) - same | 44-QFN (8x8) - same | 44-QFN (8x8) - same | 44-QFN (8x8) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| FLASH Program Memory | 128 KB (43K x 24) | 128 KB | 256 KB | 64 KB | 128 KB |
| Core Performance | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS |
| Operating Temperature | -40C to +85C (-I) | -40C to +125C (-E) | -40C to +85C (-I) | -40C to +85C (-I) | -40C to +85C (-I) |
| Peripheral Family | MC (motor control: high-speed PWM, op amps, advanced analog) | MC - same | MC - same | MC - same | GP (general-purpose peripherals) |
| Relative Unit Cost | Baseline (approx. $4.62 @ 1 pc as of 2026-09-23) | Slightly higher (extended temp grade) | Higher (2x FLASH) | Lower (half FLASH) | Comparable |
Key Differentiators
- Motor-control-optimized peripheral set (vs DSPIC33EP128GP204-I/ML)
- Extended temperature option in identical footprint (vs DSPIC33EP128MC204-E/ML)
- Memory scalability without PCB change (vs DSPIC33EP64MC204-I/ML and DSPIC33EP256MC204-I/ML)
Design Notes
Connect every VDD and VSS pin pair; per the dsPIC33EP family data sheet and programming documentation, all power pins must be wired for both operation and ICSP programming. The 44-QFN (8x8 mm) has an exposed thermal/electrical pad - solder it to a grounded copper pour to improve ground integrity and heat spreading. Use one 100 nF ceramic decoupling capacitor at each VDD/VSS pair, placed within 2 mm of the pins, plus bulk capacitance near the package.
The dsPIC33EP128MC204 has multiple PGECx/PGEDx pairs for ICSP. You may use any pair, but ICSPCLK and ICSPDAT must come from the same numbered pair (e.g., PGEC2 with PGED2). Mixing pins from different pairs is the most common cause of 'target device not detected' errors in MPLAB X. Route your programming header to the chosen pair and keep it consistent across the product family so firmware updates and production programming remain interchangeable across 64/128/256 KB variants.
In motor-control and digital-power layouts, keep PWM output traces short and away from analog sense lines feeding the integrated op amps and ADC inputs. Star-ground or partition the ground plane so high-di/dt inverter return currents do not circulate under the analog region. Trigger ADC sampling synchronized to PWM center alignment (per Microchip motor-control application references) to sample current at low-ripple instants, which measurably improves current-feedback SNR and FOC loop stability.
Estimated: dsPIC33EP-class DSCs typically consume tens of milliamps at full 70 MIPS core speed from a single low-voltage rail; verify the exact supply voltage range and current figures in the family data sheet electrical specifications section, as these were not captured in the retrieved web data. Budget the 3.3V regulator for core-speed operation plus peripheral and I/O load, and sequence power monotonically to satisfy the family power-up requirements.
Compliance Information
Compliance declarations were not captured in the retrieved web data. Trustedparts.com reports low lifecycle risk and low-med supply chain risk. Confirm RoHS/REACH certificates via Microchip's product page or authorized distributors.