DSPIC33CK256MP508-I/PT Microchip dsPIC33CK 16-Bit Digital Signal Controller 100MIPS 256KB Flash CAN-FD Motor Control PWM TQFP-80

DSPIC33CK256MP508-I/PT Product Overview

The DSPIC33CK256MP508-I/PT from Microchip is a top-tier, high-capacity 16-bit Digital Signal Controller (DSC) in an 80-lead TQFP package, designed for high-end embedded control applications requiring massive program storage, integrated analog front-ends, high-speed industrial networking, and extensive I/O and communication interfaces. Based on the dsPIC33CK core running at 100 MIPS, the DSPIC33CK256MP508-I/PT features 256KB of ECC-protected Flash and 24KB of SRAM, effortlessly hosting complex multi-axis motor control algorithms, digital power loops, and CAN-FD stacks, while leaving ample room for future upgrades. Core peripherals of the DSPIC33CK256MP508-I/PT include four high-resolution motor-control PWM pairs (250 ps step, programmable dead-time, and fault protection), two Quadrature Encoder Interfaces (QEI), a 12-bit high-speed ADC (3.5 Msps with multiple dedicated sample-and-hold circuits), and a CAN-FD controller. Additionally, three operational amplifiers and four analog comparators (with DACs) are integrated on the DSPIC33CK256MP508-I/PT, greatly simplifying motor phase-current sensing and overcurrent protection circuitry. A standout advantage of the DSPIC33CK256MP508-I/PT is its industry-leading serial communication resources: up to four UARTs, three SPIs, and three I2C interfaces, easily handling large-scale multi-peripheral interconnect and multi-protocol gateway requirements. Operating from 3.0V to 3.6V with an industrial temperature range of -40°C to +85°C, the TQFP-80 package of the DSPIC33CK256MP508-I/PT provides rich I/O pins and excellent scalability, making the DSPIC33CK256MP508-I/PT ideal for complex industrial servos, automotive electronics, renewable energy systems, and high-end automation equipment requiring dual-motor drives, multi-sensor integration, CAN-FD networking, and massive code space.

DSPIC33CK256MP508-I/PT Core Features

Processor Core: The DSPIC33CK256MP508-I/PT features a 16-bit dsPIC33CK core running at 100 MIPS, with a DSP-enhanced instruction set (single-cycle MAC)

Program Memory: The DSPIC33CK256MP508-I/PT provides 256KB Flash with ECC, in-circuit self-programmable

Data Memory: The DSPIC33CK256MP508-I/PT includes 24KB SRAM with Memory Protection Unit (MPU), providing ample buffer for complex multitasking

Motor Control PWM: The DSPIC33CK256MP508-I/PT offers 4 complementary PWM pairs with programmable dead-time, fault protection, and high-resolution mode (250 ps step)

High-Speed Precision ADC: The DSPIC33CK256MP508-I/PT integrates a 12-bit ADC up to 3.5 Msps, with multiple dedicated sample-and-hold circuits for synchronous sampling

Quadrature Encoder Interface (QEI): The DSPIC33CK256MP508-I/PT includes 2 QEI modules for high-precision position and speed feedback

CAN-FD Communication: The DSPIC33CK256MP508-I/PT features an integrated CAN-FD controller supporting up to 8 Mbps and 64-byte payload, compatible with CAN 2.0

Integrated Analog Peripherals: The DSPIC33CK256MP508-I/PT incorporates 3 operational amplifiers and 4 analog comparators (with DAC) to simplify current sensing and signal conditioning

Industry-Leading Communication Interfaces: The DSPIC33CK256MP508-I/PT supports 4x UART, 3x SPI, and 3x I2C to meet the large-scale interconnect and expansion needs of complex systems

Safety & System Management: The DSPIC33CK256MP508-I/PT includes a hardware CRC engine, watchdog timer, windowed watchdog, and BOR/POR

Power & Package: The DSPIC33CK256MP508-I/PT operates from a 3.0V to 3.6V single supply, in TQFP-80 (12mm×12mm), industrial temperature range -40°C to +85°C

DSPIC33CK256MP508-I/PT Applications

High-Performance Motion Control: The DSPIC33CK256MP508-I/PT excels in dual-axis servo drives, robotic joints, BLDC, and PMSM with encoder feedback

Automotive Electronics: The DSPIC33CK256MP508-I/PT is ideal for integrated on-board chargers (OBC), body domain controllers, sensor fusion modules, and CAN-FD gateways

Digital Power: The DSPIC33CK256MP508-I/PT is used in complex topology inverters, high-power PFC, UPS, and LLC resonant converters

Industrial Automation: The DSPIC33CK256MP508-I/PT supports multi-protocol gateways (CAN-FD/RS-485), multi-axis motion controllers, and distributed I/O stations

Medical & Precision Instruments: The DSPIC33CK256MP508-I/PT suits multi-channel analytical equipment, precision fluid control, and monitors

Renewable Energy: The DSPIC33CK256MP508-I/PT is applied in energy storage converters, solar inverters, and EV charging piles

DSPIC33CK256MP508-I/PT Key Advantages

Massive Memory & Extensive Communication: The DSPIC33CK256MP508-I/PT's 256KB Flash and 24KB SRAM, combined with 4 UARTs, 3 SPIs, and 3 I2Cs, easily handle complex algorithms, multiple protocol stacks, and large-scale peripheral interconnect—making the DSPIC33CK256MP508-I/PT the core hub for high-end systems

100 MIPS Powerful Performance: The DSPIC33CK256MP508-I/PT's dsPIC33CK core with DSP-enhanced instructions efficiently handles sensorless FOC, digital power loops, and real-time communication, easily managing dual-motor coordination

Complete Motor Control Peripherals: The DSPIC33CK256MP508-I/PT's four high-resolution PWM pairs (250 ps step) and two QEIs support independent dual-motor drives or high-precision single-axis servo control

Integrated Analog Front-End: The DSPIC33CK256MP508-I/PT's three op amps and four DAC-equipped comparators directly support phase-current sensing and overcurrent protection, reducing external components, BOM cost, and PCB area

High-Speed Synchronous ADC: The DSPIC33CK256MP508-I/PT's 3.5 Msps with multiple S&H circuits enables precise synchronous phase-current and voltage sampling—ideal for high-performance FOC and current-mode control

CAN-FD Ready: The DSPIC33CK256MP508-I/PT supports up to 8 Mbps data rates and 64-byte payloads, meeting next-generation automotive and industrial networking demands

Industrial Temperature & Reliability: The DSPIC33CK256MP508-I/PT operates from -40°C to +85°C, with ECC Flash and multiple hardware safety mechanisms ensuring long-term stability in harsh environments

Complete Development Ecosystem: The DSPIC33CK256MP508-I/PT is supported by free MPLAB X IDE and XC16 compiler, motor control libraries, digital power libraries, CAN-FD drivers, and MCC significantly accelerating time-to-market

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FAQ

1. What is the DSPIC33CK256MP508-I/PT?
   The DSPIC33CK256MP508-I/PT is a top-tier 16-bit Digital Signal Controller (DSC) from Microchip in an 80-lead TQFP package, running at 100 MIPS with 256KB ECC Flash, 24KB SRAM, 4 high-res PWM pairs, 2 QEIs, a 12-bit 3.5 Msps ADC, integrated op amps/comparators, CAN-FD, and extensive serial interfaces (4 UARTs, 3 SPIs, 3 I2Cs), industrial temperature -40°C to +85°C.
2. What does the “-I/PT” suffix mean on the DSPIC33CK256MP508-I/PT?
   “-I” indicates the industrial temperature range (-40°C to +85°C), and “/PT” denotes the 80-lead TQFP package (12mm×12mm) of the DSPIC33CK256MP508-I/PT.
3. How does the DSPIC33CK256MP508-I/PT differ from the DSPIC33CK256MP505?
   Both share the same core performance, memory, PWM, ADC, and integrated analog. The key difference is the package and communication interfaces: the DSPIC33CK256MP508-I/PT is an 80-lead TQFP with 4 UARTs, 3 SPIs, and 3 I2Cs, whereas the MP505 is a 48-lead package with typically 2 UARTs, 2 SPIs, and 2 I2Cs. The DSPIC33CK256MP508-I/PT is ideal for systems requiring extensive peripheral interconnect.
4. What are the integrated op amps and comparators used for on the DSPIC33CK256MP508-I/PT?
   The three op amps on the DSPIC33CK256MP508-I/PT enable direct differential amplification of motor phase currents, and the four DAC-equipped comparators can be configured for overcurrent protection or peak current-mode control, saving external analog chips and PCB space.
5. How many motors can the DSPIC33CK256MP508-I/PT control?
   With four high-resolution complementary PWM pairs and two QEIs, the DSPIC33CK256MP508-I/PT can simultaneously drive two 3-phase BLDC motors or one high-precision servo motor with dual encoder feedback.
6. What are the advantages of 256KB Flash and 24KB SRAM on the DSPIC33CK256MP508-I/PT?
   The large memory of the DSPIC33CK256MP508-I/PT accommodates complex dual-motor FOC algorithms, CAN-FD stacks, diagnostic code, and field-upgradeable bootloaders, providing ample headroom for full-lifecycle feature expansion.
7. How does CAN-FD differ from standard CAN on the DSPIC33CK256MP508-I/PT?
   CAN-FD on the DSPIC33CK256MP508-I/PT supports data rates up to 8 Mbps and 64-byte payloads, vastly improving bandwidth and efficiency over traditional CAN 2.0—ideal for high-speed, large-data exchanges in automotive and industrial networks.
8. What development tools are supported for the DSPIC33CK256MP508-I/PT?
   The DSPIC33CK256MP508-I/PT is supported by Microchip's free MPLAB X IDE and MPLAB XC16 compiler, along with PICkit or ICD series debuggers, MPLAB Code Configurator (MCC), motor control libraries, and CAN-FD driver libraries, enabling rapid development.
9. Does the DSPIC33CK256MP508-I/PT have an internal oscillator, or is an external crystal required?
   The DSPIC33CK256MP508-I/PT has an internal high-speed RC oscillator; no external crystal is required. However, for precise CAN-FD communication and high-performance motor control, an external crystal is recommended.
10. Is the DSPIC33CK256MP508-I/PT suitable for new designs?
    Absolutely. As a flagship member of Microchip's dsPIC33CK platform, the DSPIC33CK256MP508-I/PT delivers massive memory, extensive communication, integrated analog, and CAN-FD in an 80-lead TQFP package—a reliable, long-life choice for high-end motor drives, automotive gateways, and industrial automation requiring extensive peripheral connectivity.