DSPIC33EP128MC504-E/ML - 16-bit DSC 60 MIPS 128KB Flash | Microchip
MPN: DSPIC33EP128MC504-E/ML ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.11 | $4.11 |
| 10 | $3.9 | $39.00 |
| 100 | $3.62 | $362.00 |
| 500 | $3.35 | $1,675.00 |
| 1,000 | $3.05 | $3,050.00 |
DSPIC33EP128MC504-E/ML Overview
A digital signal controller combines the peripheral set and ease of use of a microcontroller with the computational throughput of a digital signal processor. Within the power-management hierarchy of embedded systems, the dsPIC33E family sits above general-purpose 16-bit MCUs and competes directly with DSPs in real-time control loops, making it a staple of motor control, digital power conversion, and sensing systems.
Key features include the dsPIC33E core running at up to 60 MIPS (70 MIPS core capability per the family description), 128 KB of self-programmable Flash, 16 KB of SRAM, integrated high-speed PWM modules for motor control, and on-chip analog including op amps and high-speed 10/12-bit ADCs per the family datasheet description.
The dsPIC33EP architecture pairs a modified Harvard 16-bit pipeline with DSP engine instructions (MAC, DSP multiply-accumulate), single-cycle multiply, and 32-bit multiply support, plus DMA for data movement between peripherals and RAM without CPU intervention. The motor-control PWM peripherals support complementary outputs, dead-time insertion, and fault inputs, which are essential for BLDC, PMSM, and ACIM control.
Typical applications include precision BLDC/PMSM motor drives, digital power supplies (LLC, totem-pole PFC), sensorless FOC implementations, and industrial automation nodes. The extended E temperature grade (up to +125C ambient) suits under-hood and high-heat industrial enclosures.
Design consideration: the device operates from a 3.0V to 3.6V supply; ensure decoupling of all VDD/VDDCORE pins with 0.1 uF ceramics placed within 2 mm of the pins, and confirm MCLR pull-up and ICSP header routing for in-circuit programming.
This page synthesizes distributor pricing, drop-in family alternatives, pinout guidance, and design notes not found in the manufacturer datasheet.
Drop-in alternatives for DSPIC33EP128MC504-E/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 DSPIC33EP128MC504-E/ML (same form factor and footprint) — differing in Package, Product Family, Operating Temperature, RoHS Status, Connectivity.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33EP128MC504-I/ML
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33EP128MC504-H/ML
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33EP256MC504-E/ML
✅ Drop-In✓ In Stock
Contact for price
View Datasheet →DSPIC33EP64MC504-E/ML
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33EP128MC504-E/ML Maximum Ratings & Electrical Characteristics
| Core | dsPIC33E 16-bit DSC core |
| CPU Speed | 60 MIPS |
| Flash Memory | 128 KB (43K x 24) |
| SRAM | 16 KB |
| Package | 44-QFN (8x8 mm) |
| Operating Temperature | -40C to +125C (E grade) |
| Supply Voltage | 3.0 V to 3.6 V |
| Mounting Type | Surface Mount |
| Integrated Peripherals | High-speed PWM, op amps, advanced analog |
| Product Family | dsPIC33EP MC (Motor Control) |
| Data Bus Width | 16 bit |
| RoHS Status | Compliant |
| Programming Interface | ICSP (In-Circuit Serial Programming) |
| Packaging | Tray |
DSPIC33EP128MC504-E/ML Pin Configuration
| Pin 1 | MCLR — Master clear reset / programming voltage input |
| Pin 2 | AN0/VREF+/CN3/RB0 — Analog input 0 / positive voltage reference / change notification / port B |
| Pin 3 | AN1/VREF-/CN2/RB1 — Analog input 1 / negative voltage reference / port B |
| Pin 4 | AN2/SS1/CN4/RB2 — Analog input 2 / SPI slave select / port B |
| Pin 5 | AN3/INDX/CN5/RB3 — Analog input 3 / encoder index / port B |
| Pin 6 | AN4/QEA/IC7/CN6/RB4 — Analog input 4 / encoder A input / capture 7 / port B |
| Pin 7 | AN5/QEB/IC8/CN7/RB5 — Analog input 5 / encoder B input / capture 8 / port B |
| Pin 8 | VSS — Ground reference |
| Pin 9 | OSC1/CLKI/CN12/RA2 — Oscillator crystal input / external clock input / port A |
| Pin 10 | OSC2/CLKO/CN13/RA3 — Oscillator crystal output / clock output / port A |
| Pin 11 | VDD — Positive supply |
| Pin 12 | SOSCI/CN1/RB6 — Secondary oscillator input / port B |
| Pin 13 | SOSCO/T1CK/CN0/PMBE/RB7 — Secondary oscillator output / Timer1 clock / port B |
| Pin 14 | INT0/RD8 — External interrupt 0 / port D |
| Pin 15 | PGD/EMUD1/RD9 — In-circuit debug data / port D |
| Pin 16 | PGC/EMUC1/RD10 — In-circuit debug clock / port D |
| Pin 17 | FLTA/RE5 — PWM fault input A / port E |
| Pin 18 | PWM1L1/RE0 — PWM low-side output 1 / port E |
| Pin 19 | PWM1H1/RE1 — PWM high-side output 1 / port E |
| Pin 20 | PWM1L2/RE2 — PWM low-side output 2 / port E |
| Pin 21 | PWM1H2/RE3 — PWM high-side output 2 / port E |
| Pin 22 | PWM1L3/RE4 — PWM low-side output 3 / port E |
| Pin 23 | PWM1H3/RE6 — PWM high-side output 3 / port E |
| Pin 24 | VDD — Positive supply |
| Pin 25 | VSS — Ground reference |
| Pin 26 | AN6/OCA/RB8 — Analog input 6 / op amp A output / port B |
| Pin 27 | AN7/INA/RB9 — Analog input 7 / op amp A inverting input / port B |
| Pin 28 | CVREF/AN8/INB/CN14/RB10 — Comparator voltage reference / analog input 8 / op amp B inverting input / port B |
| Pin 29 | AN9/INC/CN15/RB11 — Analog input 9 / op amp C inverting input / port B |
| Pin 30 | AN10/CVREFOUT/PMA13/CN16/RB12 — Analog input 10 / comparator reference output / port B |
| Pin 31 | AN11/IND/CN17/RB13 — Analog input 11 / op amp D inverting input / port B |
| Pin 32 | AN12/OC1/RB14 — Analog input 12 / output compare 1 / port B |
| Pin 33 | OC2/RB15 — Output compare 2 / port B |
| Pin 34 | VDDCORE — Core regulator output - connect capacitor to VSS |
| Pin 35 | AVDD — Analog positive supply |
| Pin 36 | AVSS — Analog ground |
| Pin 37 | U1TX/PMA4/RC12 — UART1 transmit / port C |
| Pin 38 | U1RX/PMA0/RC13 — UART1 receive / port C |
| Pin 39 | SCK1/SDO1/RF6 — SPI1 clock / SPI1 data out / port F |
| Pin 40 | SDI1/RG7 — SPI1 data in / port G |
| Pin 41 | RTCC/RC14 — RTCC secondary oscillator / port C |
| Pin 42 | RA14 — Port A general purpose I/O |
| Pin 43 | RA15 — Port A general purpose I/O |
| Pin 44 | VSS — Ground reference |
Typical Applications
DSPIC33EP128MC504-E/ML is suitable for 6 applications: BLDC/PMSM Motor Control, Digital Power Conversion, Industrial Automation and Sensing Nodes, Automotive-Adjacent Auxiliary Systems, Digital Audio Signal Processing, Robotics and Servo Drives.
BLDC/PMSM Motor Control
The DSPIC33EP128MC504-E/ML is purpose-built for precision motor control, pairing its 60 MIPS DSP core with motor-control PWM modules that generate complementary outputs with hardware dead-time insertion and fault shutdown. Sensorless field-oriented control (FOC) requires fast current-loop execution; the DSP engine's single-cycle MAC instructions execute Park/Clarke transforms and PI loops at rates a general-purpose MCU cannot sustain. On-chip op amps can condition shunt-current signals, reducing external component count. The extended -40C to +125C temperature grade fits drives mounted near hot motors or in sealed industrial enclosures. Designers should budget flash carefully, as a full FOC stack with state machine and diagnostics typically consumes a significant fraction of the 128 KB Flash.
Recommended
Digital Power Conversion
Digital power supplies - LLC resonant converters, totem-pole PFC stages, and synchronous buck converters - benefit from the DSPIC33EP128MC504-E/ML's combination of high-speed PWM resolution and DSP throughput. The 60 MIPS core closes voltage and current loops at switching-relevant rates, while the PWM modules support complementary drive, phase-shift, and adaptive dead-time control required by resonant topologies. Firmware-defined compensation allows tuning without hardware changes, and the 128 KB Flash accommodates multiple operating modes plus communication protocols such as PMBus-style commands. The QFN 8x8 mm footprint keeps the controller compact on dense power boards, and the -E temperature grade tolerates power-supply internal ambient temperatures that routinely exceed +85C near magnetics and hot spots.
Recommended
Industrial Automation and Sensing Nodes
In factory automation, the DSPIC33EP128MC504-E/ML serves as an intelligent sensing and actuation node, executing DSP filtering on analog inputs (on-chip op amps plus ADC) while managing communication and I/O. Its 60 MIPS throughput supports real-time FFT-based vibration analysis or FIR filtering of noisy sensor signals locally, reducing data sent upstream. The 128 KB Flash stores protocol stacks and calibration tables; 16 KB SRAM buffers data for DMA-driven acquisition. The extended -40C to +125C range allows deployment in enclosures lacking active cooling, such as motor junction boxes and outdoor panels. ICSP programming enables field firmware updates without desoldering the QFN device from the production PCB.
Recommended
Automotive-Adjacent Auxiliary Systems
The -E/ML extended temperature grade (-40C to +125C ambient) suits automotive-adjacent subsystems such as electric pump controllers, actuator drivers, and blower motor drives where underhood-adjacent ambient temperatures exceed the industrial +85C limit. The dsPIC33EP's high-speed PWM with fault inputs provides safe shutdown behavior demanded by motor-driven auxiliaries, and the DSP core runs sensorless algorithms that eliminate Hall sensors in cost-sensitive designs. Engineers must verify qualification requirements with Microchip for safety-relevant programs, as AEC-Q100 qualification is not stated in the provided data for this standard part. Use of this grade is best confined to non-ASIL auxiliary functions with appropriate validation testing.
Recommended
Digital Audio Signal Processing
The dsPIC33E DSP engine makes the DSPIC33EP128MC504-E/ML effective in embedded audio processing: FIR/IIR filtering, dynamic range compression, and active crossover implementation at 60 MIPS. The 128 KB Flash holds filter coefficient sets for multiple profiles, while the ADC and on-chip analog front end condition line-level inputs; external audio codecs interface via SPI or I2C for higher-fidelity paths. Deterministic single-cycle MAC operations guarantee consistent audio block processing latency, important for real-time effects. The compact 44-QFN 8x8 mm package fits powered-speaker amplifier boards and automotive audio accessories. Designers should allocate clean analog ground under AVDD pins to keep converter noise floors low in mixed-signal audio layouts.
Recommended
Robotics and Servo Drives
Robotic joint and servo drive controllers exploit the DSPIC33EP128MC504-E/ML's FOC-class motor control peripherals plus DSP headroom for trajectory interpolation and encoder processing. Quadrature encoder or hall-sensor feedback is decoded on-chip while the 60 MIPS core executes nested position/velocity/current loops; hardware PWM dead-time ensures clean H-bridge drive for DC or BLDC joints. The -E temperature grade tolerates heat-soaked robot arm interiors, and the 128 KB Flash holds kinematics plus communications (CAN via transceiver) stacks simultaneously. Deterministic interrupt behavior at 60 MIPS gives predictable loop jitter, essential for smooth multi-axis motion. Multiple axes are controlled by networking several DSCs over a CAN bus backbone.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33EP128MC504-E/ML — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33EP128MC504-I/ML | DSPIC33EP128MC504-H/ML | DSPIC33EP256MC504-E/ML | DSPIC33EP64MC504-E/ML |
|---|---|---|---|---|---|
| Package | 44-QFN (8x8 mm) | 44-QFN (8x8 mm) - same | 44-QFN (8x8 mm) - same | 44-QFN (8x8 mm) - same | 44-QFN (8x8 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| CPU Speed | 60 MIPS | 60 MIPS | 60 MIPS | 60 MIPS | 60 MIPS |
| Flash Memory | 128 KB | 128 KB | 128 KB | 256 KB | 64 KB |
| Key Differentiator | Extended temp + 128 KB Flash balance | Cost-optimized industrial grade | High-voltage tolerant variant | 2x program memory headroom | Lowest-cost footprint-compatible option |
Key Differentiators
- Extended temperature operation up to +125C (vs DSPIC33EP128MC504-I/ML)
- Memory-for-footprint trade available on the same 44-QFN (vs DSPIC33EP256MC504-E/ML)
- High-voltage tolerant alternative exists without PCB change (vs DSPIC33EP128MC504-H/ML)
Design Notes
The 8x8 mm QFN has an exposed pad on the underside that must be soldered to a VSS-connected copper array with multiple thermal vias. This pad is both the primary ground connection and the main heat-removal path at 60 MIPS operation. Use a solder-mask-defined aperture per Microchip QFN application guidance and inspect with X-ray or acoustic methods for voiding during production qualification, since voided pads degrade both grounding integrity and thermal performance in high-temperature enclosures.
The dsPIC33EP core is fed by an on-chip LDO whose output appears on the VDDCORE pin; the datasheet requires a dedicated external capacitor on this pin with very short, low-inductance routing to VSS. Do not load VDDCORE from external circuitry. Decouple every VDD pin individually with 0.1 uF ceramics and AVDD with a separate 0.1 uF plus optional ferrite from the digital rail to keep ADC and op-amp performance clean on mixed-signal motor-control boards.
MCLR doubles as the programming-voltage (VPP) input during ICSP; design the reset network so the programmer can drive MCLR to the required programming level - avoid strong pull-downs or clamping diodes that interfere. Route PGD/PGC (shared with RD9/RD10) away from high dv/dt PWM traces, since these lines are active during debugging on the assembled board. Finally, do not assume the -I/ML and -E/ML are identical in every environment: derate at the +125C top end for junction-limited operation at full clock speed.
Keep the high-speed PWM outputs (RE0-RE6 region) physically separated from the analog input pins and AVDD routing. Insertion of dead time occurs in hardware, but layout-driven ground bounce between the PWM gate-driver return path and analog ground can corrupt ADC readings used in current-loop control. Use a single-point star or partitioned ground region under the analog pins, and route shunt-amplifier inputs as short differential pairs directly to the AN/op-amp pins.
Compliance Information
RoHS compliance per standard Microchip product offering for the dsPIC33EP family; REACH, halogen-free, and conflict-minerals status not stated in the provided data. AEC-Q100 qualification not stated for this standard part.
