DSPIC33CK128MP205-E/M4 - 100MHz 16-Bit DSC 128KB Flash | Microchip
MPN: DSPIC33CK128MP205-E/M4 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $11.69 | $11.69 |
| 10 | $10.8 | $108.00 |
| 25 | $10.2 | $255.00 |
| 100 | $9.55 | $955.00 |
| 1,000 | $8.9 | $8,900.00 |
DSPIC33CK128MP205-E/M4 Overview
A digital signal controller combines the computational throughput of a digital signal processor with the deterministic control architecture and peripheral set of a microcontroller. Within the power-management hierarchy, a DSC sits above general-purpose MCUs and is purpose-built for closed-loop, high-frequency control loops such as digital power conversion, motor control, and advanced sensing. The dsPIC33CK family from Microchip is the single-core branch of the dsPIC33C generation, integrating DSP instructions, high-resolution PWM, CAN FD, and analog peripherals on one die.
Key features include the 100 MHz dsPIC33CK CPU core with single-cycle MAC and DSP instruction support, 128KB of ECC Flash and 16KB of ECC RAM for functional-safety-oriented designs, three integrated operational amplifiers and three comparators that offload analog signal conditioning, high-resolution PWM for precision switching converters, and CAN FD connectivity for industrial and automotive networks. A Peripheral Trigger Generator (PTG) enables autonomous peripheral sequencing, reducing CPU interrupt load.
The architecture leverages the enhanced on-chip peripherals characteristic of the dsPIC33CK family, allowing control loops to run at switching frequencies well beyond what conventional MCUs sustain. The integrated op-amps can be routed internally to comparator and ADC inputs, enabling compact current-sense front-ends for power conversion without external amplification stages.
Typical applications include digital power supplies (AC-DC, DC-DC, LLC, totem-pole PFC), brushless DC and PMSM motor control, and automotive or industrial control nodes requiring CAN FD. The 100 MHz core and high-resolution PWM make it a strong fit for high-frequency switching topologies where loop bandwidth is critical.
Design consideration: the -E temperature suffix guarantees operation to +125C, but total power dissipation and junction temperature in the 6x6 UQFN package must still be verified against your thermal stack, especially when driving the integrated op-amps continuously.
This page synthesizes distributor pricing, drop-in family alternatives, and practical design notes not found in the manufacturer datasheet, with pricing referenced as of 2026-09-22.
Drop-in alternatives for DSPIC33CK128MP205-E/M4 — 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 DSPIC33CK128MP205-E/M4 (same form factor and footprint) — differing in Package, Operating Temperature, Core, PWM, Architecture.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33CK128MP205-I/M4
✅ Drop-In✓ In Stock
$2.1 / Unit
View Datasheet →DSPIC33CK128MP205T-I/M4
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33CK128MP205T-E/M4
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33CK64MP205-E/M4
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$3.4 / Unit
View Datasheet →DSPIC33CK256MP205-E/M4
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$1.87 / Unit
View Datasheet →DSPIC33CK128MP205-E/M4 Maximum Ratings & Electrical Characteristics
| Core | 16-bit dsPIC DSC |
| CPU Speed | 100 MHz |
| Program Memory Size | 128KB Flash |
| RAM Size | 16KB |
| Number of Pins | 48 |
| Package | UQFN-48 (6x6 mm) |
| On-Chip Op-Amps | 3 |
| On-Chip Comparators | 3 |
| Peripheral Trigger Generator (PTG) | Yes |
| Communication Interfaces | CAN FD, UART, SPI, I2C |
| PWM | High-Resolution PWM |
| I/O Count | 39 |
| Operating Temperature | -40C to +125C (E grade) |
| Mounting Type | Surface Mount |
| Data Bus Width | 16 bit |
| RoHS Status | Compliant |
DSPIC33CK128MP205-E/M4 uqfn-48 (6x6 mm) Pin Configuration Guide
Pin configuration for DSPIC33CK128MP205-E/M4 (uqfn-48 (6x6 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 DSPIC33CK128MP205-E/M4.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33CK128MP205-E/M4 is suitable for 6 applications: Digital Power Supplies, Brushless DC and PMSM Motor Control, Automotive and Industrial CAN FD Nodes, Advanced Sensing and Signal Conditioning, Wireless Charging and High-Frequency Converters, Test, Measurement and Instrumentation Control.
Digital Power Supplies
The DSPIC33CK128MP205-E/M4 fits digital power conversion because its 100 MHz DSP core sustains the fast control loops required by LLC, totem-pole PFC, and DC-DC topologies, while high-resolution PWM provides the duty-cycle granularity needed to minimize output ripple and meet tight regulation specs. The three on-chip comparators enable nanosecond-class hardware current limiting independent of software, and the Peripheral Trigger Generator sequences ADC sampling to PWM edges for deterministic loop timing. Placed as the sole controller in an AC-DC or DC-DC stage, it replaces analog control chips with firmware-based compensation, cutting BOM cost and enabling adaptive mode switching. The trade-off is firmware development effort, but the integrated op-amps remove external current-sense amplification stages, shrinking the control board.
Recommended
Brushless DC and PMSM Motor Control
For sensorless or sensored FOC motor control, the DSPIC33CK128MP205-E/M4 combines a 100 MHz core executing field-oriented-control loops with three integrated op-amps that condition phase-current shunt signals directly on-chip, eliminating external amplifiers. High-resolution PWM drives the three-phase inverter with fine edge placement that reduces audible noise and torque ripple, while the three comparators implement fast overcurrent trip using hardware comparators rather than software latency. Microchip's dsPIC33CK Low-Voltage Motor Control Board (DM330031) demonstrates this exact device class in BLDC/PMSM designs. In a 48-UQFN (6x6 mm) footprint rated to +125C, the controller fits close to the power stage, shortening gate-drive routing and improving switching integrity in compact drives.
Recommended
Automotive and Industrial CAN FD Nodes
The DSPIC33CK128MP205-E/M4 integrates CAN Flexible Data (CAN FD), allowing throughput beyond classical CAN's 1 Mbit/s ceiling, which suits inverter communication, body-domain sensing, and factory automation nodes. The extended -40C to +125C temperature rating of the E suffix matches under-hood and industrial cabinet environments where standard -I grade parts fall short. The 100 MHz core provides headroom to run the control application and the CAN FD stack concurrently, while 128KB Flash with ECC protects code integrity in electrically noisy switch-mode environments. Combined with the Peripheral Trigger Generator offloading timed acquisition tasks, the CPU budget remains available for protocol handling, making it a strong single-chip node controller for mixed control-plus-communication designs.
Recommended
Advanced Sensing and Signal Conditioning
The DSPIC33CK128MP205-E/M4 suits advanced sensing front-ends because its three on-chip operational amplifiers can be configured for gain and routed internally to the ADC and comparators, digitizing small differential signals from current shunts, pressure bridges, or thermocouple-conditioning circuits without external amplification. The 100 MHz DSP core applies digital filtering, calibration, and DSP algorithms such as FFT-based spectral analysis on the sampled data, while 16KB of ECC RAM buffers multi-channel acquisition streams. The Peripheral Trigger Generator can autonomously trigger ADC conversions on precise time bases, keeping sample timing deterministic even under interrupt load. This makes the device a compact single-chip replacement for MCU-plus-op-amp-plus-logic sensor conditioning boards in industrial instrumentation.
Recommended
Wireless Charging and High-Frequency Converters
High-frequency resonant converters, including wireless power transmitters, benefit from the DSPIC33CK128MP205-E/M4's high-resolution PWM, which delivers the fine phase and frequency adjustment needed to track resonant tank detuning in real time and maintain efficiency across coupling variations. The 100 MHz core executes frequency-tracking and foreign-object-detection algorithms at rates exceeding 1 MHz loop bandwidths, while hardware comparators provide cycle-by-cycle overcurrent protection without software latency. The three op-amps condition coil current and voltage sense signals on-chip, consolidating the analog front-end. Operation to +125C suits the thermally constrained enclosures typical of charging pads. The deterministic interrupt latency of the dsPIC33CK core keeps timing-critical protection routines predictable across all load conditions.
Recommended
Test, Measurement and Instrumentation Control
In benchtop instruments, data-acquisition modules, and programmable power supplies, the DSPIC33CK128MP205-E/M4 acts as the real-time measurement and regulation engine. Its 100 MHz DSP core performs fast averaging, RMS computation, and control-loop arithmetic, while 128KB Flash hosts protocol stacks and calibration tables with room for field updates. The integrated op-amps and comparators build threshold detectors and current-shunt front-ends without extra analog ICs, and high-resolution PWM synthesizes precision setpoint DACs for programmable supply references. The Peripheral Trigger Generator timestamps events autonomously, improving measurement repeatability. The 48-pin UQFN (6x6 mm) footprint with 39 I/O provides enough digital control lines for relay switching, ranges, and front-panel interfaces within a compact board area.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33CK128MP205-E/M4 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33CK128MP205-I/M4 | DSPIC33CK128MP205T-I/M4 | DSPIC33CK128MP205T-E/M4 | DSPIC33CK64MP205-E/M4 | DSPIC33CK256MP205-E/M4 |
|---|---|---|---|---|---|---|
| Package | UQFN-48 (6x6 mm) | UQFN-48 (6x6 mm) - same | UQFN-48 (6x6 mm) - same | UQFN-48 (6x6 mm) - same | UQFN-48 (6x6 mm) - same | UQFN-48 (6x6 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| CPU Speed | 100 MHz | 100 MHz | 100 MHz | 100 MHz | 100 MHz | 100 MHz |
| Flash Memory | 128KB | 128KB | 128KB | 128KB | 64KB | 256KB |
| RAM | 16KB | 16KB | 16KB | 16KB | 16KB | 16KB |
| Operating Temperature | -40C to +125C | -40C to +85C | -40C to +85C | -40C to +125C | -40C to +125C | -40C to +125C |
| Analog Integration (Op-Amps / Comparators) | 3 / 3 | 3 / 3 | 3 / 3 | 3 / 3 | 3 / 3 | 3 / 3 |
Key Differentiators
- Extended temperature range to +125C (vs DSPIC33CK128MP205-I/M4)
- Memory upgrade path on the same footprint (vs DSPIC33CK64MP205-E/M4)
- Integrated analog front-end (vs Generic MCU + external op-amp solution)
- Production-ready reel packaging option (vs DSPIC33CK128MP205T-E/M4)
Design Notes
The -E suffix guarantees -40C to +125C operation, but the 6x6 mm UQFN package has limited thermal dissipation area. Estimated: when running the 100 MHz core with all three on-chip op-amps enabled continuously, junction temperature margin should be verified with your PCB copper area under the exposed pad. Maximize the thermal via array under the UQFN ground pad and connect to an internal ground plane; a typical 4x4 via grid under the pad significantly improves theta_JA versus no vias.
Place 0.1uF ceramic decoupling capacitors at each VDD pin of the 48-UQFN as close to the pins as possible, plus one bulk capacitor (4.7uF-10uF) near the device. Route the high-resolution PWM outputs to the gate drivers with matched lengths per phase and keep them away from the op-amp input traces, because fast PWM edges can couple into the current-sense front-end. The exposed ground pad must be soldered - it is both the thermal and primary return path.
Do not confuse the /M4 (UQFN-48) and /PT (TQFP-48) package suffixes - they are not footprint-compatible despite identical silicon. Verify pin multiplexing in the datasheet rather than assuming fixed peripheral locations, since PWM, ADC, op-amp, and CAN FD functions share pins and are configured via the Peripheral Pin Select mechanism. When substituting the -I grade for the -E grade, recheck the worst-case ambient plus self-heating temperature, because the +85C industrial limit is easily exceeded in enclosed power electronics.
Use the on-chip op-amps in internal routing mode where possible to keep sensitive analog nodes on-die, which avoids board-level noise pickup in switching environments. When external routing is required, guard the op-amp inverting inputs with a ground guard ring and place the shunt resistor within a few millimeters of the pin pair. Reference Microchip's dsPIC33CK motor control reference designs (e.g., DM330031 low-voltage board) for proven layout patterns of the current-sense front-end.
Compliance Information
RoHS compliant per LCSC and DigiKey distributor listings. REACH, halogen-free, and conflict mineral status not stated in provided data - request certificates from Microchip.
