DSPIC33CK128MP203-E/M5 - 100MHz 16-Bit DSC | Microchip
MPN: DSPIC33CK128MP203-E/M5 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.06 | $4.06 |
| 10 | $3.72 | $37.20 |
| 100 | $3.35 | $335.00 |
| 500 | $2.95 | $1,475.00 |
| 1,000 | $2.2 | $2,200.00 |
DSPIC33CK128MP203-E/M5 Overview
A digital signal controller combines the computational throughput of a DSP with the peripheral integration and deterministic control of a microcontroller. Within the power management hierarchy, the dsPIC33CK family sits at the top of Microchip's single-core 16-bit DSC line, targeting closed-loop control systems where fast interrupt response and specialized control peripherals (PWM, ADC, comparators, op-amps) execute loops at switching frequencies of hundreds of kilohertz.
Key features include a modified Harvard architecture executing up to 100 MIPS, dual-partition Flash with ECC and live update for field firmware upgrades without downtime, Memory Built-In Self-Test (MBIST) for functional-safety designs, and Peripheral Trigger Generator (PTG) for hardware-sequenced operation. The integrated analog suite includes 3 operational amplifiers and 3 analog comparators, reducing external component count in power conversion stages.
The 36-pin device pairs its high-resolution PWM and CAN Flexible Data (CAN FD) module with a 12-bit high-speed ADC pipeline suited to peak current-mode control of buck, boost, LLC, and totem-pole PFC converters. The on-chip op-amps can be configured as inverting or non-inverting gain stages feeding the ADC directly, enabling single-shunt or multi-shunt motor phase current sensing with minimal board area.
Typical applications include digital switched-mode power supplies, BLDC and PMSM motor control, automotive power conversion modules, and industrial sensing and control nodes that require a CAN FD interface. The extended temperature grade makes it suitable for under-hood and high-power-density environments.
Design consideration: the 3.0V to 3.6V operating window means the 5V rails common in industrial systems require a local LDO or buck regulator; also budget the exposed pad as the primary ground and thermal path for best high-frequency performance.
This page synthesizes verified distributor pricing, drop-in family alternatives, and practical design notes not found in the manufacturer datasheet alone.
Drop-in alternatives for DSPIC33CK128MP203-E/M5 — 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 DSPIC33CK128MP203-E/M5 (same form factor and footprint) — differing in Data SRAM, Package, Program Flash, Operating Temperature, PWM.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33CK128MP203-I/M5
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$1.79 / Unit
View Datasheet →DSPIC33CK64MP203-E/M5
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33CK256MP203-E/M5
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
Contact for price
View Datasheet →DSPIC33CK32MP203-E/M5
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33CK128MP203-E/M5 Maximum Ratings & Electrical Characteristics
| Core Architecture | 16-bit dsPIC33CK DSC core (modified Harvard) |
| Maximum Core Speed | 100 MHz (100 MIPS) |
| Program Flash | 128 KB (128K x 8) with ECC and dual-partition live update |
| Data SRAM | 16 KB with MBIST |
| Supply Voltage | 3.0 V to 3.6 V |
| Operating Temperature | -40C to +150C (E grade) |
| Package | 36-UQFN (5x5 mm) exposed pad |
| Mounting Type | Surface Mount |
| Qualification | Automotive, AEC-Q100, Functional Safety (FuSa) |
| On-Chip Op-Amps | 3 |
| Analog Comparators | 3 |
| PWM | High-Resolution PWM |
| CAN Interface | CAN Flexible Data (CAN FD) |
| Special Peripherals | Peripheral Trigger Generator (PTG) |
| Product Series | dsPIC33CK 28/36/48/64/80-Pin 16-bit DSC |
| RoHS Status | Compliant |
| Typical Unit Price | USD 2.20 to 4.06 (as of 2026-09-22, distributor range) |
DSPIC33CK128MP203-E/M5 36-uqfn (5x5 mm) exposed pad Pin Configuration Guide
Pin configuration for DSPIC33CK128MP203-E/M5 (36-uqfn (5x5 mm) exposed pad 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 DSPIC33CK128MP203-E/M5.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33CK128MP203-E/M5 is suitable for 6 applications: Digital Switched-Mode Power Supplies, BLDC / PMSM Motor Control, Automotive Power Conversion Modules, Industrial Sensing and Control Nodes, Advanced Power-Metering and Precision Measurement, High-Density Embedded Control with Live Update.
Digital Switched-Mode Power Supplies
The DSPIC33CK128MP203-E/M5 fits digital SMPS control because its 100 MHz (100 MIPS) core closes current-mode loops at the switching frequency while the high-resolution PWM delivers fine duty-cycle resolution for buck, boost, LLC, and totem-pole PFC topologies. The 3 on-chip comparators implement cycle-by-cycle overcurrent trips in hardware with no software latency, and the 3 op-amps can amplify shunt-resistor signals ahead of the ADC, removing external analog gain stages. In a typical converter, the DSC reads input/output voltages and inductor current each switching cycle, computes the control law, and updates the PWM comparators; dual-partition Flash with ECC allows field firmware updates of control coefficients without production downtime.
Recommended
BLDC / PMSM Motor Control
For brushless DC and permanent-magnet synchronous motor drives, the DSPIC33CK128MP203-E/M5 provides field-oriented control execution at 100 MIPS while its 3 op-amps and 3 comparators form the phase-current sensing and protection front end, supporting single-shunt and multi-shunt configurations with minimal external components. The high-resolution PWM generates complementary outputs with programmable dead time for the three-phase inverter, and the ADC synchronizes sampling to PWM centers to avoid switching noise. The PTG peripheral can sequence ADC triggers autonomously, offloading the CPU. In automotive traction-auxiliary and industrial pump/fan drives, the AEC-Q100 qualification and -40C to +150C rating of this E-grade part cover harsh thermal environments.
Recommended
Automotive Power Conversion Modules
The E-grade DSPIC33CK128MP203 is explicitly positioned by Microchip for automotive applications, carrying AEC-Q100 qualification and Functional Safety (FuSa) support with operation to +150C. This suits 48V/12V DC-DC converters, battery-management auxiliary supplies, and solenoid controllers located near the engine or power electronics where ambient temperatures exceed standard industrial ratings. The integrated CAN FD module connects the controller to in-vehicle networks at data rates beyond classic CAN, while MBIST and ECC on the memory subsystems support safety analyses. Dual-partition live update enables field reprogramming of installed ECUs, reducing recall exposure during software maintenance cycles.
Recommended
Industrial Sensing and Control Nodes
In industrial automation, the DSPIC33CK128MP203-E/M5 serves as a smart sensor node or local controller that acquires analog signals through its op-amp/ADC front end, executes DSP filtering (FIR/IIR) at up to 100 MIPS, and reports over CAN FD to PLC or SCADA systems. The Peripheral Trigger Generator automates measurement timing without CPU intervention, reducing jitter in periodic sampling. The extended -40C to +150C operating range tolerates enclosures mounted near motors, drives, or heating equipment where conventional 85C-rated MCUs derate. Its deterministic interrupt architecture provides the predictable response times required for limit monitoring and safety shutdown logic.
Recommended
Advanced Power-Metering and Precision Measurement
The DSC's DSP multiply-accumulate instructions and 100 MHz pipeline enable real-time RMS calculation, harmonic analysis, and power-factor computation on sampled voltage and current channels. The on-chip 3 op-amps condition shunt or CT signals into the ADC range, and synchronized PWM-triggered sampling guarantees the equal sample spacing that accuracy in RMS and energy integration depends on. The 128 KB Flash holds both the measurement engine and communication stacks (CAN FD, UART), and the 16 KB SRAM with MBIST buffers waveform snapshots for event capture in smart meters, submetering, and industrial energy-monitoring equipment operating over wide temperature ranges.
Recommended
High-Density Embedded Control with Live Update
Systems requiring in-field firmware upgrade without downtime benefit from the dual-partition Flash with ECC and live update: the controller continues executing from the active partition while the new image is written to the inactive one, then a validated switchover occurs. This architecture, combined with CAN FD for image delivery and MBIST for runtime memory verification, targets automotive ECUs, networked power supplies, and remotely deployed industrial controllers. The 36-pin UQFN 5x5 mm footprint conserves board area in dense assemblies, and the Peripheral Trigger Generator sustains background I/O sequencing during the update window so control loops remain uninterrupted throughout the process.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33CK128MP203-E/M5 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33CK128MP203-I/M5 | DSPIC33CK64MP203-E/M5 | DSPIC33CK256MP203-E/M5 |
|---|---|---|---|---|
| Package | 36-UQFN (5x5 mm) exposed pad | 36-UQFN (5x5 mm) - same | 36-UQFN (5x5 mm) - same | 36-UQFN (5x5 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Flash | 128 KB (ECC, dual partition) | 128 KB | 64 KB | 256 KB |
| Data SRAM | 16 KB | 16 KB | 8 KB | 32 KB |
| Core Speed | 100 MHz (100 MIPS) | 100 MHz | 100 MHz | 100 MHz |
| Operating Temperature | -40C to +150C (E grade) | -40C to +125C (I grade) | -40C to +150C | -40C to +150C |
| Analog Peripherals | 3 op-amps, 3 comparators | 3 op-amps, 3 comparators | 3 op-amps, 3 comparators | 3 op-amps, 3 comparators |
| Automotive Qualification | AEC-Q100, FuSa | Industrial grade | AEC-Q100 | AEC-Q100 |
Key Differentiators
- Extended temperature range to +150C (vs DSPIC33CK128MP203-I/M5)
- Balanced 128 KB Flash capacity (vs DSPIC33CK64MP203-E/M5)
- Cost-optimized memory point (vs DSPIC33CK256MP203-E/M5)
Design Notes
The exposed pad of the 36-UQFN 5x5 mm package is the principal ground return. Connect it to the ground plane with a 3x3 or larger via array under the footprint; this minimizes ground bounce for the ADC/op-amp analog front end and conducts heat for operation up to +150C. Keep the analog ground region under the op-amp/comparator pins quiet by separating high-current power-stage ground returns from the DSC local ground and joining them at a single point.
The device operates only from 3.0V to 3.6V. In 5V or 24V industrial systems, generate the 3.3V rail locally with an LDO or small buck, and ensure it can source the peak core current at 100 MIPS plus I/O loads. Decouple VDD with 0.1uF ceramic capacitors at each supply pin plus one 4.7uF to 10uF bulk capacitor; place the smallest capacitors closest to the pins to support the fast core clock edges.
When using the on-chip op-amps to sense motor or converter currents, route shunt signals differentially and keep the traces away from PWM gate-drive lines. Synchronize ADC sampling to the PWM period via the Peripheral Trigger Generator so sampling occurs away from switching edges - this typically improves effective current-signal accuracy substantially and avoids the need for heavy software filtering.
Do not substitute the -E (150C) part into cost calculations assuming -I (125C) pricing - extended-temperature automotive parts carry a price premium and different stock allocation. Also confirm that dual-partition live-update bootloaders reserve the correct partition size for the 128 KB Flash, since a bootloader sized for the 64 KB family variant will mis-map partitions and brick the update path.
Compliance Information
Classified as Automotive, AEC-Q100, dsPIC 33CK series with Functional Safety (FuSa) support per distributor product listings. RoHS and lead-free status per standard Microchip current production.
