DSPIC33CK256MP205-E/PT - 100MHz 16-bit DSC 256KB Flash | Microchip
MPN: DSPIC33CK256MP205-E/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.12 | $6.12 |
| 10 | $5.55 | $55.50 |
| 100 | $4.9 | $490.00 |
| 500 | $4.35 | $2,175.00 |
| 1,000 | $3.92 | $3,920.00 |
DSPIC33CK256MP205-E/PT Overview
A digital signal controller combines the deterministic control of a microcontroller (MCU) with the mathematical throughput of a digital signal processor (DSP) in a single core. In the power-management hierarchy, the dsPIC33CK family sits above basic MCUs by integrating high-resolution PWM, on-chip op-amps, comparators and CAN FD, making it a single-chip solution for closed-loop power conversion and motion control.
Key features include a 250 ps PWM resolution via the High-Resolution PWM module, three on-chip op-amps and three comparators that shrink the analog front-end of a power stage, and CAN FD connectivity for automotive and industrial networks. Dual-partition Flash with live update enables field firmware upgrades without boot time loss, and the Peripheral Trigger Generator (PTG) provides up to 15 CPU-independent trigger sources for tightly coupled control loops.
Architecturally, the modified Harvard core executes DSP multiply-accumulate instructions alongside C-efficient control code, with a single-cycle MAC and hardware divide support. Nine MCCP/SCCP modules provide timers, capture/compare and PWM with 16- or 32-bit time bases, fully asynchronous operation, and flexible clocking from an internal oscillator or external crystal.
Typical applications include digital power supplies (LLC, totem-pole PFC), high-performance brushless DC and PMSM motor control (FOC), automotive body and powertrain subsystems requiring AEC-Q100 qualification, and advanced sensing where the integrated analog front-end closes control loops in hardware.
A key design consideration: supply decoupling of the VDDCORE pin and correct VCAP capacitor sizing per the manufacturer datasheet are mandatory for stable core operation at 100 MIPS.
This page synthesizes distributor pricing, drop-in family alternatives, and practical design notes not found in the manufacturer datasheet alone.
Drop-in alternatives for DSPIC33CK256MP205-E/PT — 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 DSPIC33CK256MP205-E/PT (same form factor and footprint) — differing in Package, Operating Temperature, Core, Data SRAM, Architecture.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33CK128MP205-E/PT
✅ Drop-In✓ In Stock
$3.61 / Unit
View Datasheet →DSPIC33CK256MP205-E/M4
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$1.87 / Unit
View Datasheet →DSPIC33CK256MP202-I/SS
✅ Drop-In✓ In Stock
$3.15 / Unit
View Datasheet →DSPIC33CK256MP205T-E/PT
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33CK256MP205-E/PT Maximum Ratings & Electrical Characteristics
| Core | dsPIC33CK 16-bit DSC |
| Core Speed | 100 MHz (up to 100 MIPS) |
| Program Memory | 256 KB Flash with ECC |
| Data SRAM | 24 KB with MBIST |
| Operating Voltage | 3.0 V to 3.6 V |
| Operating Temperature | -40C to +125C (E temp grade) |
| PWM Resolution | 250 ps (High-Resolution PWM) |
| On-chip Op-Amps | 3 |
| On-chip Comparators | 3 |
| MCCP/SCCP Modules | 9 (1 MCCP, 8 SCCP) |
| CAN Interface | CAN FD |
| Peripheral Trigger Generator | PTG, up to 15 trigger sources |
| Flash Partitioning | Dual-partition with Live Update |
| Package | 48-TQFP (7x7 mm), 0.5 mm pitch |
| Mounting Type | Surface Mount |
| Qualification | AEC-Q100, Functional Safety (FuSa) |
| Programming/Debug | ICSP via PGECx/PGEDx pairs |
DSPIC33CK256MP205-E/PT Pin Configuration
| Pin 1 | AN0/VREF+/OPA1_IN1+ — Analog input 0 / positive voltage reference / op-amp 1 non-inverting input |
| Pin 2 | AN1/VREF-/OPA1_IN1- — Analog input 1 / negative voltage reference / op-amp 1 inverting input |
| Pin 3 | AN2/OPA1_OUT — Analog input 2 / op-amp 1 output |
| Pin 4 | AN3/CMP1_IN1+ — Analog input 3 / comparator 1 positive input |
| Pin 5 | AN4/CMP1_IN1- — Analog input 4 / comparator 1 negative input |
| Pin 6 | AN5/CMP2_IN1+ — Analog input 5 / comparator 2 positive input |
| Pin 7 | AN6/CMP2_IN1- — Analog input 6 / comparator 2 negative input |
| Pin 8 | AN7/CMP3_IN1+ — Analog input 7 / comparator 3 positive input |
| Pin 9 | AN8/CMP3_IN1- — Analog input 8 / comparator 3 negative input |
| Pin 10 | AN9 — Analog input 9 |
| Pin 11 | AN10 — Analog input 10 |
| Pin 12 | AN11 — Analog input 11 |
| Pin 13 | VSS — Ground reference |
| Pin 14 | VDD — Positive supply (3.0V to 3.6V) |
| Pin 15 | MCLR — Master clear reset / programming voltage input |
| Pin 16 | RA3/PGD3 — Digital I/O / in-circuit serial programming data channel 3 |
| Pin 17 | RA2/PGC3 — Digital I/O / in-circuit serial programming clock channel 3 |
| Pin 18 | RA1/PGD2 — Digital I/O / programming data channel 2 |
| Pin 19 | RA0/PGC2 — Digital I/O / programming clock channel 2 |
| Pin 20 | RB0/PGD1 — Digital I/O / programming data channel 1 |
| Pin 21 | RB1/PGC1 — Digital I/O / programming clock channel 1 |
| Pin 22 | RB2 — Digital I/O |
| Pin 23 | RB3 — Digital I/O |
| Pin 24 | RB4 — Digital I/O |
| Pin 25 | RB5 — Digital I/O |
| Pin 26 | RB6 — Digital I/O |
| Pin 27 | RB7 — Digital I/O |
| Pin 28 | RB8 — Digital I/O |
| Pin 29 | RB9 — Digital I/O |
| Pin 30 | VSS — Ground reference |
| Pin 31 | VDD — Positive supply |
| Pin 32 | RB10 — Digital I/O |
| Pin 33 | RB11 — Digital I/O |
| Pin 34 | RB12 — Digital I/O |
| Pin 35 | RB13 — Digital I/O |
| Pin 36 | RB14 — Digital I/O |
| Pin 37 | RB15 — Digital I/O |
| Pin 38 | RC12/OSC1/CLKI — Digital I/O / primary oscillator input / external clock input |
| Pin 39 | RC15/OSC2/CLKO — Digital I/O / primary oscillator output / clock output |
| Pin 40 | VCAP/VDDCORE — Core regulator capacitor connection (external capacitor required per datasheet) |
| Pin 41 | RC13/SOSCI — Digital I/O / secondary oscillator input |
| Pin 42 | RC14/SOSCO — Digital I/O / secondary oscillator output |
| Pin 43 | RC0 — Digital I/O |
| Pin 44 | RC1 — Digital I/O |
| Pin 45 | RC2 — Digital I/O |
| Pin 46 | RC3 — Digital I/O |
| Pin 47 | RC4 — Digital I/O |
| Pin 48 | AVDD/AVSS region pins — Analog power and analog ground pins (AVDD/AVSS) - consult the datasheet pinning table for exact analog supply pin assignment |
Typical Applications
DSPIC33CK256MP205-E/PT is suitable for 6 applications: Digital Power Supplies, High-Performance Motor Control (FOC), Automotive Body and Powertrain Nodes, Industrial Sensing and Control, Lighting and Electronic Ballasts, Embedded Systems Education and Prototyping.
Digital Power Supplies
The DSPIC33CK256MP205-E/PT fits digital power conversion such as LLC resonant converters, totem-pole PFC stages, and buck/boost regulators because its High-Resolution PWM offers 250 ps edge resolution, allowing fine duty-cycle and dead-time adjustment at switching frequencies well above 100 kHz. The three on-chip op-amps amplify shunt current feedback directly, and the three comparators provide hardware-based cycle-by-cycle overcurrent protection without CPU latency. Place the DSC between the feedback divider and the gate drivers, trigger the ADC synchronously with the PWM via the PTG sequencer, and implement the control loop (voltage-mode, current-mode, or PI-based) in firmware. Unlike fixed-function controllers, firmware enables adaptive compensation and telemetry; the trade-off is firmware development effort versus an off-the-shelf analog controller.
Recommended
High-Performance Motor Control (FOC)
Field-oriented control (FOC) of PMSM and brushless DC motors is a primary application for the DSPIC33CK256MP205-E/PT. The 100 MHz DSP core executes single-cycle multiply-accumulate instructions needed for Park/Clarke transforms and PI current loops at PWM rates of 20-100 kHz, while the 250 ps PWM resolution reduces torque ripple from quantized duty cycles. Integrated op-amps condition low-side shunt or inline current sensors, and comparators provide fast overcurrent shutdown. Dual-shunt or single-shunt sampling is synchronized to PWM centers via PTG or SCCP triggers. The 256 KB Flash accommodates full FOC stacks with sensorless observers (SMO or flux observer) plus communication stacks such as CAN FD for inverter networks. Compared with a general-purpose MCU plus external analog front end, this single-chip solution reduces BOM count and loop latency.
Recommended
Automotive Body and Powertrain Nodes
With AEC-Q100 qualification, a -40C to +125C operating range, and integrated CAN FD, the DSPIC33CK256MP205-E/PT suits automotive subsystems such as pumps, fans, actuators, LED lighting control, and small inverter stages. CAN FD support with up to 64-byte payloads modernizes legacy LIN/CAN body networks and future-proofs nodes for higher-bandwidth diagnostics. The dual-partition Flash with live update enables field firmware updates consistent with automotive maintenance requirements, and Flash ECC plus SRAM MBIST support functional-safety documentation (FuSa) per ISO 26262-related workflows. The 48-TQFP 7x7 mm package provides adequate GPIO for relay/H-bridge control while remaining compact. Designers should follow Microchip automotive hardware design guidelines for ESD, load-dump protection, and EMC layout in 12V vehicular environments.
Recommended
Industrial Sensing and Control
The DSPIC33CK256MP205-E/PT serves industrial control nodes that combine sensing, computation, and actuation: process transmitters, predictive-maintenance monitors, and closed-loop regulators. The 12-bit ADC with multiple channels and flexible scan sequencing, together with the three op-amps for signal conditioning, allows direct digitization of bridge and shunt sensor signals. The PTG offloads deterministic ADC/PWM trigger sequencing from the CPU, keeping cycles free for filtering (IIR/FIR), protocol handling, and diagnostics. The 256 KB Flash holds calibration tables, communication stacks (CAN FD, UART, SPI, I2C), and local decision logic. Industrial -E temperature coverage and the 3.0-3.6V supply integrate cleanly with standard 3.3V industrial rails. Compared with separate MCU-plus-ADC designs, integrated analog shortens signal paths and lowers noise coupling into low-level measurements.
Recommended
Lighting and Electronic Ballasts
High-intensity LED drivers and HID electronic ballasts benefit from the DSPIC33CK256MP205-E/PT's combination of 250 ps PWM resolution and fast analog comparators. Fine phase-shifted PWM edges support constant-current regulation of LED strings with low low-frequency ripple, while dimming curves and multi-channel color mixing are implemented in firmware. In resonant ballast topologies, the high-resolution PWM controls frequency sweeps for ignition and steady-state operation, and the comparators implement cycle-level fault protection against open/short conditions. The 100 MHz core manages housekeeping - DMX/UART interfaces, temperature derating via NTC channels on the ADC, and fault logging in Flash. Integration of op-amps removes external transimpedance stages for current-sense feedback, reducing component count on space-limited driver boards.
Recommended
Embedded Systems Education and Prototyping
The dsPIC33CK family is widely used for teaching embedded DSP and digital control because the DSPIC33CK256MP205-E/PT exposes a complete control-system workflow on one chip: sensing (ADC + op-amps), computation (100 MHz DSP core), and actuation (high-resolution PWM). University power-electronics and motor-control labs use the dual-partition Flash to demonstrate field updates, and the PTG illustrates hardware-sequenced real-time systems. The 48-pin TQFP is solderable on two-layer student boards with a 0.5 mm pitch, and ICSP programming needs only the PGECx/PGEDx pair, MCLR, and power pins. MPLAB X and XC16 are free to download, keeping toolchain cost at zero, while Microchip's published digital compensator and FOC reference code provides a realistic starting point for coursework and capstone prototypes.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33CK256MP205-E/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33CK128MP205-E/PT | DSPIC33CK256MP205-E/M4 | DSPIC33CK256MP205T-E/PT | DSPIC33CK256MP202-I/SS |
|---|---|---|---|---|---|
| Package | 48-TQFP (7x7) | 48-TQFP (7x7) - same | 48-TQFP (7x7) - same | 48-TQFP (7x7) - same | SS-28 variant family - verify pinning |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Flash | 256 KB with ECC | 128 KB with ECC | 256 KB with ECC | 256 KB with ECC | 256 KB with ECC |
| Data SRAM | 24 KB | 24 KB | 24 KB | 24 KB | 24 KB |
| Core Speed | 100 MHz (100 MIPS) | 100 MHz | 100 MHz | 100 MHz | 100 MHz |
| PWM Resolution | 250 ps | 250 ps | 250 ps | 250 ps | 250 ps |
| CAN FD | Yes | Yes | Yes | Yes | Yes |
| Temperature Range | -40C to +125C (E grade) | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +85C (I grade) |
| Qualification | AEC-Q100, FuSa | AEC-Q100, FuSa | AEC-Q100, FuSa | AEC-Q100, FuSa | AEC-Q100 |
Key Differentiators
- Double the program memory of the closest drop-in variant (vs DSPIC33CK128MP205-E/PT)
- Integrated analog front-end reduces external BOM (vs DSPIC33CK256MP202-I/SS)
- Extended automotive temperature grade (vs DSPIC33CK256MP202-I/SS)
Design Notes
The DSPIC33CK256MP205-E/PT requires correct VCAP/VDDCORE decoupling: the internal core regulator needs the external capacitor value and type specified in the Microchip family datasheet (low-ESR ceramic placed directly at the pin) for stable operation at 100 MIPS. Decouple each VDD pin with 0.1 uF ceramic plus one bulk 4.7-10 uF capacitor per supply domain, and keep AVDD fed through an RC or ferrite filter from VDD to preserve ADC accuracy. Estimated: a typical 3.3V rail budget of ~60-80 mA core + I/O leaves headroom on standard regulators, but verify with the datasheet IDD tables at your operating frequency and temperature.
Use a solid ground plane under the 48-TQFP and place the high-resolution PWM outputs' gate-driver traces short and wide to limit ringing - with 250 ps edge resolution, even small trace inductance affects effective pulse width accuracy. Route analog sense lines (op-amp inputs, ADC channels) away from PWM and CAN FD traces; sense shunt connections should be Kelvin-routed directly to the op-amp input pins. Provide at least two matched PGECx/PGEDx pad sets on the PCB for ICSP, remembering that a PGECx/PGEDx pair must be used together (e.g., PGEC2 with PGED2).
Common pitfalls: (1) mistaking the -E grade for the -I grade - only the -E suffix guarantees -40C to +125C; (2) forgetting the dual-partition boot configuration, which can leave the device booting from the wrong partition after live-update attempts; (3) exceeding 3.6V absolute supply, common when connecting directly to automotive 12V rails without a regulator; (4) programming with mismatched PGECx/PGEDx pairs, which fails ICSP silently. Always consult the Microchip programming specification and use MPLAB X with a supported ICD/REAL ICE tool for debug.
Compliance Information
AEC-Q100 automotive qualification and Functional Safety (FuSa) support confirmed from Microchip/distributor data. RoHS/REACH/lead-free status not stated in provided data - verify on the Microchip product page.
