DSPIC33CH128MP508-I/PT Microchip dsPIC33CH Dual-Core 16-Bit Digital Signal Controller 90MIPS Master 100MIPS Slave 128KB Flash CAN TQFP-80

DSPIC33CH128MP508-I/PT Product Overview

The DSPIC33CH128MP508-I/PT from Microchip is a high-performance dual-core 16-bit Digital Signal Controller (DSC) in an 80-lead TQFP package, designed for high-end embedded control applications requiring parallel processing, real-time complex algorithm execution, and versatile system integration. The DSPIC33CH128MP508-I/PT innovatively combines two dsPIC33 DSC cores with different performance profiles: a 90 MIPS master core and a 100 MIPS slave core. Together they can efficiently partition high-speed control loops, communication stacks, and digital signal processing tasks, significantly boosting system throughput and real-time responsiveness. The DSPIC33CH128MP508-I/PT features 128KB of Flash program memory, 20KB of SRAM with flexible partitioning, and rich peripherals including four complementary motor-control PWM outputs with programmable dead-time, two Quadrature Encoder Interfaces (QEI), a 12-channel 12-bit high-speed ADC (3.25 Msps), a CAN 2.0B controller, and UART, SPI, I2C interfaces. With a supply voltage of 3.0V to 3.6V and an industrial temperature range of -40°C to +85°C, the DSPIC33CH128MP508-I/PT provides ample I/O and scalability, making it ideal for servo drives, robotics, automotive electronics, digital power, and high-end industrial automation demanding dual-core parallel processing, precision motor control, and industrial networking.

DSPIC33CH128MP508-I/PT Core Features

Dual-Core Architecture: The DSPIC33CH128MP508-I/PT features a 90 MIPS master core and a 100 MIPS slave core that independently execute different tasks for efficient parallel processing.

Program Memory: The DSPIC33CH128MP508-I/PT provides 128KB Flash, In-Circuit Self-Programmable with dual-core partition management.

Data Memory: The DSPIC33CH128MP508-I/PT includes 20KB SRAM, flexibly allocatable between both cores.

Motor Control PWM: The DSPIC33CH128MP508-I/PT offers 4 complementary PWM pairs with programmable dead-time, fault protection, and high-resolution mode.

High-Speed ADC: The DSPIC33CH128MP508-I/PT integrates a 12-channel 12-bit ADC, up to 3.25 Msps sampling rate with simultaneous multi-channel sampling.

Quadrature Encoder Interface (QEI): The DSPIC33CH128MP508-I/PT contains 2 QEI modules for high-precision position and speed sensing.

CAN Bus: The DSPIC33CH128MP508-I/PT includes an integrated CAN 2.0B controller for industrial fieldbus and automotive network connectivity.

Communication Interfaces: The DSPIC33CH128MP508-I/PT supports 3x UART, 2x SPI, 2x I2C for flexible system interconnection.

Signal Processing & Timers: The DSPIC33CH128MP508-I/PT provides rich input captures, output compares/standard PWMs, and multiple 16/32-bit timers.

Safety & System: The DSPIC33CH128MP508-I/PT features a hardware CRC engine, watchdog timer, brown-out reset, and flexible clock management.

Power & Package: The DSPIC33CH128MP508-I/PT operates from 3.0V to 3.6V supply, in a TQFP-80 (12mm×12mm) package, industrial temperature range -40°C to +85°C.

DSPIC33CH128MP508-I/PT Applications

High-Performance Motion Control: The DSPIC33CH128MP508-I/PT is ideal for servo drives, robotic joints, BLDC, PMSM with encoder feedback.

Automotive Electronics: The DSPIC33CH128MP508-I/PT is suitable for on-board chargers (OBC), DC/DC converters, electric water/oil pumps, sensor fusion modules.

Digital Power: The DSPIC33CH128MP508-I/PT can be used in high-precision inverters, power factor correction (PFC), UPS, LLC resonant converters.

Industrial Automation: The DSPIC33CH128MP508-I/PT enables dual-core distributed control nodes, multi-axis motion controllers, CAN bus gateways.

Medical & Precision Instruments: The DSPIC33CH128MP508-I/PT is used in precision fluid control, laboratory analytical equipment, multi-parameter monitors.

Renewable Energy: The DSPIC33CH128MP508-I/PT supports energy storage converters, EV charging piles, solar inverters.

DSPIC33CH128MP508-I/PT Key Advantages

Innovative Dual-Core Parallel Processing: The DSPIC33CH128MP508-I/PT's master core can run high-speed FOC while its slave core simultaneously handles CAN, diagnostics, or auxiliary tasks, greatly improving real-time response.

High-Resolution Motor PWM: The DSPIC33CH128MP508-I/PT's four complementary PWM pairs with high-resolution mode produce smoother motor voltage waveforms, reducing torque ripple and acoustic noise.

Ultra-Fast 12-bit ADC: The DSPIC33CH128MP508-I/PT's 3.25 Msps ADC with 12-bit resolution enables precise phase current synchronous sampling for advanced FOC and current-mode control.

Extensive Communication: The DSPIC33CH128MP508-I/PT offers CAN 2.0B, three UARTs, two SPIs, and two I2Cs, easily handling industrial fieldbus, HMI, and external expansion requirements.

Flexible Dual-Core Memory Architecture: The DSPIC33CH128MP508-I/PT's 128KB Flash and 20KB SRAM can be partitioned between master and slave cores to optimize system resource utilization.

Industrial Temperature & Compact Package: The DSPIC33CH128MP508-I/PT operates over -40°C to +85°C, and its TQFP-80 package balances high I/O count with manageable PCB footprint.

Mature Development Ecosystem: The DSPIC33CH128MP508-I/PT is supported by free MPLAB X IDE and XC16 compiler with dual-core debug support, motor control libraries, and CAN driver libraries for faster time-to-market.

Long-Term Availability: The DSPIC33CH128MP508-I/PT is part of Microchip's advanced dsPIC33CH dual-core family, with long-term supply commitment and ongoing support.

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FAQ

1. What is the DSPIC33CH128MP508-I/PT?
   The DSPIC33CH128MP508-I/PT is a high-performance dual-core 16-bit Digital Signal Controller (DSC) from Microchip, featuring a 90 MIPS master core and a 100 MIPS slave core, 128KB Flash, 20KB SRAM, a 12-channel 12-bit 3.25 Msps ADC, 4 complementary PWM pairs, 2 QEIs, and CAN 2.0B, in an 80-lead TQFP package, industrial temperature range -40°C to +85°C.
2. What does the “-I/PT” suffix mean?
   “-I” indicates the industrial temperature range (-40°C to +85°C), and “/PT” denotes the 80-lead TQFP package of the DSPIC33CH128MP508-I/PT.
3. What are the practical advantages of the dual-core architecture?
   The DSPIC33CH128MP508-I/PT's master and slave cores can run independent programs—for example, the master core handles real-time motor FOC or digital power algorithms, while the slave core simultaneously manages CAN communication, HMI, or diagnostics, providing task isolation, simplified software architecture, and significantly improved real-time responsiveness.
4. How fast is the ADC, and what are the benefits?
   The DSPIC33CH128MP508-I/PT features a 12-channel 12-bit ADC with a 3.25 Msps sampling rate—over 6× faster than typical 500 ksps ADCs in classic DSCs—enabling precise phase current dynamic capture for advanced FOC and sensorless control algorithms.
5. How many motors can it control?
   With 4 complementary motor-control PWM pairs and 2 QEIs, the DSPIC33CH128MP508-I/PT can directly drive one 3-phase servo motor with encoder feedback, or simultaneously control two stepper motors. Combined with dual-core processing, complex motion control applications are easily realized.
6. Does the DSPIC33CH128MP508 have a CAN interface?
   Yes, the DSPIC33CH128MP508-I/PT integrates a full CAN 2.0B controller. Simply add an external CAN transceiver (e.g., TJA1051) for industrial or automotive networking.
7. What development tools are supported?
   Microchip's free MPLAB X IDE with the MPLAB XC16 compiler is used for development. PICkit or ICD series debuggers, MPLAB Code Configurator (MCC), motor control libraries, and dual-core reference designs are available for the DSPIC33CH128MP508-I/PT.
8. How is the Flash and SRAM partitioned between the two cores?
   The DSPIC33CH128MP508-I/PT's 128KB Flash and 20KB SRAM can be flexibly partitioned into master and slave regions. The master typically handles control algorithms and real-time tasks with larger memory allocation, while the slave manages communication and auxiliary functions with smaller allocation. Partitioning is done via programming and is highly flexible.
9. Does it have an internal oscillator, or is an external crystal required?
   The DSPIC33CH128MP508-I/PT has an internal high-speed RC oscillator with PLL, so no external crystal is required. However, for CAN communication and high-performance motor control requiring precise timing, an external crystal is recommended.
10. Is the DSPIC33CH128MP508 suitable for new designs?
    Yes, the DSPIC33CH128MP508-I/PT represents the high end of Microchip's 16-bit DSC portfolio. For new designs requiring parallel processing, high-speed ADC, precision motor control, and CAN connectivity, it is a powerful platform with long-term availability.