DSPIC33CK256MP506-I/PT - 100MHz 16-bit DSC 256KB Flash | Microchip
MPN: DSPIC33CK256MP506-I/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $7.35 | $7.35 |
| 10 | $6.62 | $66.20 |
| 100 | $5.89 | $589.00 |
| 500 | $5.3 | $2,650.00 |
| 1,000 | $4.77 | $4,770.00 |
DSPIC33CK256MP506-I/PT Overview
A digital signal controller combines the deterministic control of a microcontroller with the mathematical throughput of a DSP. In the power-management hierarchy of embedded systems, a DSC sits between general-purpose MCUs and dedicated DSPs, offering single-cycle MAC instructions, fast interrupt latency, and precision analog peripherals - making it the device of choice for closed-loop, real-time control loops executing at switching frequencies of 100 kHz and above.
Key features of the DSPIC33CK256MP506 include a dsPIC33CK DSC core running at DC to 100 MIPS, dual-partition Flash with Live Update and ECC, and on-chip Memory Built-In Self-Test (MBIST) supporting ISO 26262 and IEC 61508 functional-safety flows. The analog subsystem integrates 3 operational amplifiers and 3 comparators, while the motor-control peripherals include a High-Resolution PWM with 250 ps resolution, PTG (Programmable Trigger Generator), and CAN Flexible Data (CAN FD).
Architecturally, the modified Harvard core uses a 24-bit instruction word with 16-bit data paths, allowing simultaneous instruction and data fetches. Single-cycle DSP multiply-accumulate and hardware divide, together with zero-overhead loops and deterministic interrupts, enable tight control-loop execution without software jitter. Hardware functional-safety blocks reduce external monitoring componentry in safety-rated designs.
Typical applications include high-precision PMSM, BLDC, ACIM and switched-reluctance motor control, digital power supplies and LLC/PFC converters, industrial automation, metering, and automotive-adjacent sensing and control nodes.
When designing with this device, budget for the 3.0 V to 3.6 V operating window and verify that 100 MIPS operation remains within thermal limits across the -40C to +85C industrial range; the High-Resolution PWM's 250 ps resolution is most effective when the AUXPLL is properly configured per the datasheet clock chapter.
This page synthesizes distributor pricing, drop-in alternatives within the dsPIC33CK/33CH families, and practical design notes not found in the manufacturer datasheet alone.
Drop-in alternatives for DSPIC33CK256MP506-I/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 DSPIC33CK256MP506-I/PT (same form factor and footprint) — differing in Package, Operating Temperature, Core Architecture, CAN Interface, Data SRAM.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33CK256MP506-E/PT
✅ Drop-In✓ In Stock
$4.28 / Unit
View Datasheet →DSPIC33CK128MP506-I/PT
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
Contact for price
View Datasheet →DSPIC33CK256MP205-I/PT
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$3.55 / Unit
View Datasheet →DSPIC33CK256MP205-E/PT
✅ Drop-In✓ In Stock
$3.92 / Unit
View Datasheet →DSPIC33CH64MP506T-I/PT
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$2.74 / Unit
View Datasheet →DSPIC33CH128MP506-I/PT
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$5.62 / Unit
View Datasheet →DSPIC33CK256MP506-I/PT Maximum Ratings & Electrical Characteristics
| Core | dsPIC33CK 16-bit DSC core |
| Maximum Operating Frequency | 100 MHz (DC to 100 MIPS) |
| Program Memory (Flash) | 256 KB with ECC and Live Update (dual-partition) |
| Data SRAM | 24 KB with MBIST |
| Operating Voltage | 3.0 V to 3.6 V |
| Operating Temperature | -40C to +85C (I grade) |
| Package | 64-TQFP (10x10 mm, 0.50 mm pitch), PT |
| Mounting Type | Surface Mount |
| CAN Interface | CAN FD (Flexible Data) |
| Operational Amplifiers | 3 |
| Comparators | 3 |
| PWM Resolution | 250 ps (High-Resolution PWM) |
| Special Peripherals | PTG (Programmable Trigger Generator) |
| Functional Safety Features | ECC Flash, dual-partition Live Update, MBIST |
| Instruction Word Width | 24-bit program / 16-bit data |
| Architecture | Modified Harvard |
| RoHS Status | Compliant |
| Target Motor Types | BLDC, PMSM, ACIM, SR |
DSPIC33CK256MP506-I/PT 64-tqfp (10x10 mm, 0.50 mm pitch), pt Pin Configuration Guide
Pin configuration for DSPIC33CK256MP506-I/PT (64-tqfp (10x10 mm, 0.50 mm pitch), pt 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 DSPIC33CK256MP506-I/PT.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33CK256MP506-I/PT is suitable for 6 applications: PMSM / BLDC Motor Control, Digital Power Supplies (LLC, PFC, Totem-Pole), Industrial Automation and Sensing, Energy Metering and Smart Grid, Automotive-Adjacent Control and Lighting, Embedded IoT and Edge Control Nodes.
PMSM / BLDC Motor Control
The DSPIC33CK256MP506-I/PT is purpose-built for field-oriented control (FOC) of BLDC, PMSM, ACIM and switched-reluctance motors. Its 100 MIPS dsPIC33CK core executes current loops at switching frequencies well above 100 kHz, while the 250 ps High-Resolution PWM minimizes current ripple and audible noise. The 3 integrated op-amps buffer shunt-current feedback directly, cutting BOM cost versus external amplifiers, and 3 comparators support fast overcurrent trips with cycle-by-cycle limiting. According to Microchip, the family delivers more energy-efficient, quieter operation and extended motor life. Place the DSC between gate drivers and current-sense shunts, exploiting the PTG for deterministic ADC trigger timing; the trade-off is that all six PWM channels and the op-amp muxing must be mapped carefully to the 64-TQFP pinout during PCB layout.
Recommended
Digital Power Supplies (LLC, PFC, Totem-Pole)
In digitally controlled AC-DC and DC-DC converters - LLC resonant, boost PFC, and totem-pole PFC stages - the DSPIC33CK256MP506-I/PT provides the deterministic, sub-microsecond control loop these topologies demand. The 100 MHz core closes voltage and current loops at hundreds of kHz, and the 250 ps High-Resolution PWM achieves the fine duty-cycle and phase-shift resolution needed to suppress limit-cycle oscillation at high switching frequencies. Dual-partition Flash with Live Update allows firmware field updates while the converter keeps running, valuable in always-on server and telecom power. The 3 on-chip comparators implement hardware overcurrent/overvoltage protection faster than any software loop. Design consideration: the 3.0 V to 3.6 V rail requires a clean local LDO or buck output, and EMI from the power stage demands careful separation of analog and PWM grounds on the 64-TQFP footprint.
Recommended
Industrial Automation and Sensing
Factory automation nodes - actuators, servo drives, sensor hubs, and condition-monitoring units - benefit from the DSPIC33CK256MP506-I/PT's mix of DSP throughput and rich connectivity. The CAN FD interface handles deterministic industrial network traffic at data rates beyond classical CAN, while the PTG (Programmable Trigger Generator) sequences ADC sampling with hardware precision for synchronized multi-channel acquisition. The 24-bit DSP MAC instructions accelerate FFT-based vibration analysis at the edge, enabling predictive maintenance without an external processor. ECC Flash and MBIST support IEC 61508-oriented designs, and the -40C to +85C industrial temperature grade matches unconditioned cabinet environments. Use the 64-TQFP's expanded I/O to drive multiple encoder interfaces and digital I/O banks; the main design constraint is ensuring adequate decoupling on all VDD pins for noisy motor-adjacent installations.
Recommended
Energy Metering and Smart Grid
The DSPIC33CK256MP506-I/PT fits poly-phase energy meters and power-quality monitors where DSP math and metrology accuracy must coexist. The 100 MHz core runs 16/24-bit fixed-point DSP algorithms for RMS computation, harmonic analysis (FFT), and frequency tracking in real time, while the integrated 3 op-amps can amplify shunt or CT secondary signals ahead of external precision ADCs such as the MCP3901. CAN FD links meter clusters to distribution automation backbones, and the dual-partition Live Update Flash allows certified metrology firmware to be updated in the field without interrupting measurement. The -40C to +85C industrial range covers outdoor cabinet deployments. Design tip: metering accuracy is dominated by the analog front end, so budget board area for precision reference circuitry and keep switching supplies away from the DSC's analog pins.
Recommended
Automotive-Adjacent Control and Lighting
While the -I/PT grade itself is not AEC-Q100 qualified, the DSPIC33CK256MP506 platform (with -E and automotive-qualified family variants) serves near-automotive applications: auxiliary pumps, DC-DC converters, high-intensity LED headlamp drivers, and e-mobility sensing nodes. The 250 ps High-Resolution PWM directly enables frequency dithering in LED drivers and phase-shift control in automotive-grade DC-DC stages, reducing EMI filter size. ECC Flash and MBIST provide the hardware integrity monitoring that safety concepts in ISO 26262-oriented programs expect, and CAN FD provides the in-vehicle network interface at data rates beyond classical CAN. For full automotive qualification, select the appropriate qualified grade within the dsPIC33CK family rather than the industrial -I part, and validate thermal margins at the -E grade's extended +150C ceiling.
Recommended
Embedded IoT and Edge Control Nodes
The DSPIC33CK256MP506-I/PT serves as the real-time edge controller in industrial IoT gateways and smart-sensor modules, bridging analog sensing and networked cloud reporting. Its 100 MIPS DSP core performs local filtering and analytics (FIR/IIR filtering, FFT feature extraction) so raw data can be reduced before transmission, conserving bandwidth on CAN FD or serial links. The 24 KB SRAM with MBIST and 256 KB ECC Flash give software integrity assurances expected in connected industrial devices, and the PTG automates multi-sensor ADC sequencing without CPU intervention, reducing jitter and power. The 3 integrated op-amps condition bridge and shunt sensors directly. Trade-off: there is no on-chip radio, so pair it with an external wireless module; the benefit is that the DSC's full real-time budget stays dedicated to control and signal processing tasks.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33CK256MP506-I/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33CK256MP506-E/PT | DSPIC33CK128MP506-I/PT | DSPIC33CK256MP205-I/PT | DSPIC33CH64MP506T-I/PT |
|---|---|---|---|---|---|
| Package | 64-TQFP (10x10 mm, PT) | 64-TQFP (10x10 mm, PT) - same | 64-TQFP (10x10 mm, PT) - same | 64-TQFP (10x10 mm, PT) - same | 64-TQFP (10x10 mm, PT) - same |
| Brand | Microchip Technology | 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 | 100 MHz dual-core (main + auxiliary) |
| Program Flash | 256 KB (ECC, dual-partition) | 256 KB (ECC, dual-partition) | 128 KB (ECC, dual-partition) | 256 KB (ECC, dual-partition) | 64 KB main-core Flash |
| CAN FD | Yes | Yes | Yes | Yes | Yes |
| Operating Temperature | -40C to +85C (I grade) | -40C to +150C (E grade) | -40C to +85C (I grade) | -40C to +85C (I grade) | -40C to +85C (I grade) |
Key Differentiators
- Integrated analog front end (3 op-amps + 3 comparators) (vs DSPIC33CK256MP205-I/PT)
- Extended temperature option on identical silicon (vs DSPIC33CK256MP506-E/PT)
- Full program memory at lower cost than dual-core (vs DSPIC33CH64MP506T-I/PT)
Design Notes
The DSPIC33CK256MP506-I/PT operates from a 3.0 V to 3.6 V rail. In digital power and motor-control systems the controller usually sits next to noisy gate-driver circuitry, so generate VDD with a dedicated low-noise LDO or filtered buck output and decouple every VDD/VDDCORE pin pair with 100 nF ceramics placed within 2 mm of the pin, plus one 4.7 uF to 10 uF bulk capacitor per power domain. Verify that core-regulator sequencing requirements in the datasheet power chapter are met before applying VDD; violating sequencing is a common cause of non-boot units in new layouts.
On the 64-TQFP (10x10 mm) footprint, use the exposed 0.5 mm pitch carefully: 4-mil trace/spacing is recommended for fan-out under the package. Dedicate an unbroken ground plane on layer 2, and partition the board so the analog pins feeding the 3 op-amps and comparators reference a quiet ground area away from PWM return currents. Route high-resolution PWM outputs away from analog sense lines to prevent capacitive coupling that defeats the 250 ps PWM resolution. The Microchip Digital Power PIM (MA330048) reference layout is a proven starting point.
Two frequent mistakes with the dsPIC33CK family: (1) assuming the AUXPLL default clocking is valid - the 250 ps High-Resolution PWM requires explicit AUXPLL configuration per the datasheet clock section, otherwise PWM resolution degrades to the standard N-bit granularity; (2) using the -I/PT part in environments requiring beyond +85C - the datasheet operating conditions list -40C to +150C only for the -E grade, so select DSPIC33CK256MP506-E/PT for extended-temperature designs. Also remember the clock-switching and fail-safe clock monitor features should be enabled in safety-oriented applications.
Compliance Information
RoHS compliant per distributor listings (onlinecomponents.com: 'RoHS Compliant'). Not AEC-Q100 qualified in the -I/PT grade; consult Microchip for automotive-qualified family variants.
