DSPIC33CK256MP205T-I/M4 - 100MHz 16-bit DSC 256KB Flash | Microchip
MPN: DSPIC33CK256MP205T-I/M4 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.17 | $2.17 |
| 10 | $2.05 | $20.50 |
| 100 | $1.9 | $190.00 |
| 500 | $1.78 | $890.00 |
| 1,000 | $1.65 | $1,650.00 |
DSPIC33CK256MP205T-I/M4 Overview
A digital signal controller combines the compute throughput of a DSP with the peripheral integration and deterministic control of a microcontroller. Within the power-management IC hierarchy, DSCs sit between general-purpose MCUs and dedicated DSPs, providing modified Harvard architecture, hardware DSP multiply-accumulate, and cycle-deterministic I/O for closed-loop control. The dsPIC33CK family is Microchip's single-core 100 MHz generation of this category.
Key features include a dual-partition Flash supporting Live Update, hardware ECC on program memory, an onboard 12-bit high-speed ADC, three analog comparators, three operational amplifiers, a Peripheral Trigger Generator (PTG), and the High-Resolution PWM (HRPWM) family for sub-nanosecond PWM edge resolution. The M4 package suffix denotes the 48-pin UQFN 6x6 mm option; the I suffix denotes the industrial temperature grade.
Architecturally, the dsPIC33CK core executes up to 100 MIPS with a five-stage pipeline, DSP engine with 40-bit wide accumulator, and single-cycle MAC. Memory Built-In Self-Test (MBIST) on SRAM and Flash ECC support functional-safety (FuSa) development flows referenced by DigiKey for this part.
Typical applications include digital power supplies (PFC, LLC, totem-pole), brushless and PMSM motor control, advanced sensing front ends, and high-end embedded control where on-chip op-amps buffer current-shunt signals into the ADC without external amplifiers.
Design consideration: this is a tape-and-reel (T) ordering option for automated assembly; the tray-packaged non-T variant is identical electrically. Budget 3.0V-3.6V supply and decouple the exposed pad for thermal dissipation.
This page synthesizes distributor pricing, same-family drop-in alternatives, and design guidance not found in the manufacturer datasheet. Pricing as of 2026-09-22.
Drop-in alternatives for DSPIC33CK256MP205T-I/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 DSPIC33CK256MP205T-I/M4 (same form factor and footprint) — differing in Data SRAM, Operating Temperature, Package, Architecture, Core.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33CK256MP205-E/M4
✅ Drop-In✓ In Stock
$1.87 / Unit
View Datasheet →DSPIC33CK128MP205-E/PT
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$3.61 / Unit
View Datasheet →DSPIC33CK64MP205
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33CK32MP205
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33CK256MP205T-I/M4 Maximum Ratings & Electrical Characteristics
| Core | dsPIC33CK 16-bit DSC |
| Maximum Clock Speed | 100 MHz (100 MIPS) |
| Program Flash | 256 KB (with ECC, dual-partition Live Update) |
| Data SRAM | 24 KB (with MBIST) |
| Supply Voltage | 3.0 V to 3.6 V |
| Operating Temperature | -40C to +85C (I grade) |
| Package | 48-UQFN (6x6 mm) with exposed pad |
| Mounting Type | Surface Mount |
| Analog Comparators | 3 |
| Operational Amplifiers | 3 |
| ADC | 12-bit high-speed |
| CAN Interface | CAN Flexible Data (CAN FD) |
| PWM | High-Resolution PWM (HRPWM) |
| Special Peripherals | Peripheral Trigger Generator (PTG) |
| Functional Safety | FuSa-capable (ECC Flash, MBIST) |
| Architecture | Modified Harvard, single-core |
| Packaging | Tape and Reel (T suffix) |
DSPIC33CK256MP205T-I/M4 48-uqfn (6x6 mm) with exposed pad Pin Configuration Guide
Pin configuration for DSPIC33CK256MP205T-I/M4 (48-uqfn (6x6 mm) with 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 DSPIC33CK256MP205T-I/M4.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33CK256MP205T-I/M4 is suitable for 6 applications: Digital Power Supplies (PFC / LLC / Totem-Pole), BLDC / PMSM Motor Control, Advanced Sensing and Control Systems, Industrial Automation and CAN FD Networks, Wireless Charging and Battery Management, Automotive-Adjacent and Functional-Safety Systems.
Digital Power Supplies (PFC / LLC / Totem-Pole)
The DSPIC33CK256MP205T-I/M4 fits digital power conversion because its High-Resolution PWM delivers fine edge placement for phase-shifted and hard-switched topologies, while the 100 MIPS dsPIC33CK core closes voltage and current loops with deterministic latency. In an LLC or totem-pole PFC stage supplied at 3.3V logic, the three on-chip op-amps condition current-shunt feedback directly into the 12-bit high-speed ADC, removing external amplifier BOM cost. The Peripheral Trigger Generator synchronizes ADC sampling to PWM centers, avoiding switching-noise corruption of samples. The trade-off versus analog controllers is firmware complexity, but the 256 KB dual-partition Flash enables field-updatable control law updates with Live Update without power interruption.
Recommended
BLDC / PMSM Motor Control
For sensorless field-oriented control (FOC) of brushless DC and permanent-magnet synchronous motors, the DSPIC33CK256MP205T-I/M4 provides the 100 MIPS DSP engine with single-cycle MAC needed to execute current loops at 20-50 kHz while running the outer speed loop on the same core. The three integrated op-amps amplify low-side shunt currents into the 12-bit ADC, and three comparators support fast overcurrent trips independent of software. High-Resolution PWM with programmable dead-time insertion drives the three-phase inverter stage through a gate-driver such as the MIC4102. The 256 KB Flash accommodates FOC, communication, and diagnostics firmware with headroom, and CAN FD integrates the drive into industrial networks.
Recommended
Advanced Sensing and Control Systems
The DSPIC33CK256MP205T-I/M4 serves advanced sensing nodes where analog front-end integration matters. Its three op-amps can be configured as gain stages, filters, or difference amplifiers around external sensors, feeding the 12-bit high-speed ADC sampled by PTG-triggered, timer-synchronized conversions for coherent oversampling. The 100 MHz core applies DSP filtering (IIR/FIR via the DSP engine MAC) in real time, and the 24 KB SRAM buffers waveform captures. For safety-relevant sensing, Flash ECC and SRAM MBIST provide hardware fault detection consistent with functional-safety flows. The 48-pin UQFN (6x6 mm) footprint keeps the sensor node compact, while CAN FD and UART/SPI/I2C cover upstream connectivity.
Recommended
Industrial Automation and CAN FD Networks
In industrial control panels and field devices, the DSPIC33CK256MP205T-I/M4 combines general-purpose MCU peripherals with the CAN FD interface required by modern industrial buses. The CAN FD module supports 64-byte payloads at elevated bit rates, reducing bus load in dense networks. The 100 MIPS core handles protocol stacks plus real-time I/O deterministically, and the 256 KB Flash stores dual firmware images for Live Update over the network - a key maintenance feature. The Peripheral Trigger Generator offloads deterministic I/O sequencing from software, and the -40C to +85C I-grade covers cabinet environments. HRPWM outputs also enable embedded switch-mode power stages within the same controller.
Recommended
Wireless Charging and Battery Management
Wireless power transmitter and receiver control requires precise PWM phase control and fast current sensing - both native strengths of the DSPIC33CK256MP205T-I/M4. The High-Resolution PWM adjusts coil drive phase and frequency for foreign-object detection and resonant tuning, while the on-chip op-amps read shunt currents into the 12-bit ADC synchronized by the PTG. The 100 MIPS core runs Qi-style communication demodulation in firmware. In battery management, the same analog chain supports per-cell voltage sampling and the comparators provide hardware overcurrent protection. The 256 KB Flash holds multi-protocol firmware (Qi, proprietary), and the compact UQFN-48 fits space-constrained charging pads.
Recommended
Automotive-Adjacent and Functional-Safety Systems
While this industrial-grade part is not itself AEC-Q100 qualified, its functional-safety features - Flash ECC, dual-partition Live Update, and SRAM MBIST - support FuSa-oriented development flows referenced by DigiKey's FuSa product category for the dsPIC33CK family. Typical roles include gateways between CAN FD vehicle/industrial networks and local control loops, sensor aggregation with built-in self-test reporting, and supervisory controllers requiring fault detection. The 100 MHz core provides margin for safety monitors alongside the primary application, and the 48-pin UQFN suits compact ECUs. Designers needing certified automotive grade should evaluate the dsPIC33CK automotive-qualified variants within Microchip's portfolio.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33CK256MP205T-I/M4 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33CK256MP205-E/M4 | DSPIC33CK128MP205 | DSPIC33CK64MP205 |
|---|---|---|---|---|
| Package | 48-UQFN (6x6 mm) | 48-UQFN (6x6 mm) - same | 48-UQFN (6x6 mm) - same | 48-UQFN (6x6 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core Speed | 100 MHz (100 MIPS) | 100 MHz (100 MIPS) | 100 MHz (100 MIPS) | 100 MHz (100 MIPS) |
| Program Flash | 256 KB (ECC, dual-partition) | 256 KB (ECC, dual-partition) | 128 KB (ECC, dual-partition) | 64 KB (ECC, dual-partition) |
| Data SRAM | 24 KB | 24 KB | 16 KB | 8 KB |
| Supply Voltage | 3.0 V to 3.6 V | 3.0 V to 3.6 V | 3.0 V to 3.6 V | 3.0 V to 3.6 V |
| Analog Peripherals (Op-Amps / Comparators) | 3 / 3 | 3 / 3 | 3 / 3 | 3 / 3 |
| Key Peripherals | CAN FD, HRPWM, PTG, 12-bit ADC | CAN FD, HRPWM, PTG, 12-bit ADC | CAN FD, HRPWM, PTG, 12-bit ADC | CAN FD, HRPWM, PTG, 12-bit ADC |
Key Differentiators
- Full 256 KB Flash with ECC and Live Update (vs DSPIC33CK128MP205)
- Extended-temperature sibling available (vs DSPIC33CK256MP205-E/M4)
- Cost-optimized down-family path (vs DSPIC33CK64MP205)
Design Notes
Estimated: power the dsPIC33CK core from a clean 3.0V-3.6V rail. With 100 MHz core active and peripherals enabled, supply current is typically in the tens-of-mA range (consult the manufacturer datasheet for exact figures by operating mode); a 3.3V LDO such as an MCP17xxx family part with at least 150 mA headroom is a conservative choice. Decouple each VDD pin with 100 nF ceramic capacitors placed within 2 mm of the pin, plus one bulk 10 uF capacitor. Keep AVDD on its own filtered supply or RC filter to protect ADC accuracy.
The M4 package is a 48-pin UQFN (6x6 mm) with exposed thermal pad. Solder the exposed pad to a ground pour via array (4x4 or larger) for both thermal dissipation and ground return integrity. The 0.5 mm pin pitch requires careful stencil design - use 1:1 aperture with 75-100 um paste reduction or home-plate apertures on fine-pitch pads to prevent bridging. The tape-and-reel (T) suffix suits automated assembly; for prototyping hand assembly, the TQFP I/PT variant of the same die is easier to solder.
Do not assume cross-family pin compatibility: DSPIC33CK256MP205-I/PT (TQFP-44) is the same silicon but a different package and cannot replace the M4 UQFN on an existing PCB. When swapping within the dsPIC33CK 48-pin family (128MP205, 64MP205), verify SRAM size against your linker map since lower-Flash variants also reduce SRAM. Also confirm configuration-bit settings for Live Update dual-partition boot - a single-partition bootloader configuration will not exploit the ECC/Live Update safety features.
For CAN FD operation, keep the CANH/CANL traces to the transceiver (e.g., MCP2562FD) as a tightly coupled 120-ohm differential pair, and place the transceiver within 20-30 mm of the MCU pins. For HRPWM outputs driving gate drivers, route each PWM output short and direct; the sub-nanosecond edge resolution is only meaningful if board-level propagation skew between phases is also controlled. Add series 22-33 ohm resistors on fast PWM outputs to damp ringing into long traces.
Compliance Information
Compliance data was not present in the provided verified web data; consult Microchip's product page or RoHS certificate of compliance for this exact ordering code.
