DSPIC33EP128GM306-I/PT Microchip dsPIC33EP 16-Bit Digital Signal Controller 70MIPS 128KB Flash CAN Motor Control PWM QEI TQFP-64

DSPIC33EP128GM306-I/PT Product Overview

The DSPIC33EP128GM306-I/PT from Microchip is a high-performance 16-bit Digital Signal Controller (DSC) in a 64-lead TQFP package, engineered for high-end embedded applications requiring massive program storage, precision motor control, industrial networking, and a rich analog peripheral set. Based on the dsPIC33E core running at 70 MIPS, the DSPIC33EP128GM306-I/PT features 128KB of Flash and 16KB of SRAM, effortlessly hosting extremely complex Field-Oriented Control (FOC), sensorless algorithms, CAN communication stacks, and field-upgradeable code with exceptionally generous headroom. Core motor-control peripherals of the DSPIC33EP128GM306-I/PT include four complementary high-speed PWM outputs with programmable dead-time and fault protection, two Quadrature Encoder Interfaces (QEI), four input captures, and four output compares. The high-precision analog front-end of the DSPIC33EP128GM306-I/PT boasts a 12-bit ADC (up to 1.1 Msps, up to 18 analog input channels with multiple sample-and-hold circuits), three analog comparators, and two 10-bit DACs, providing a powerful single-chip solution for multi-channel precision current/voltage sensing and fast protection. The DSPIC33EP128GM306-I/PT also integrates a CAN 2.0B (ECAN) controller and industry-leading serial communication resources including two UARTs, two SPIs, and two I2Cs. Operating from 3.0V to 3.6V with an industrial temperature range of -40°C to +85°C, the TQFP-64 package of the DSPIC33EP128GM306-I/PT delivers rich I/O and an extraordinarily generous memory configuration in a compact footprint, making the DSPIC33EP128GM306-I/PT ideal for high-end servo systems, automotive electronic modules, industrial robots, and multi-protocol gateways requiring dual-axis motor drive, CAN connectivity, multi-channel precision analog acquisition, and complex control algorithms.

DSPIC33EP128GM306-I/PT Core Features

Processor Core: The DSPIC33EP128GM306-I/PT features a 16-bit dsPIC33E core running at 70 MIPS, with a DSP-enhanced instruction set (single-cycle MAC)

Program Memory: The DSPIC33EP128GM306-I/PT provides 128KB Flash, In-Circuit Self-Programmable

Data Memory: The DSPIC33EP128GM306-I/PT includes 16KB SRAM, providing top-tier storage for complex algorithms, real-time data buffering, and multi-tasking

Motor Control PWM: The DSPIC33EP128GM306-I/PT offers 4 complementary PWM pairs with programmable dead-time, fault protection, and high-resolution duty-cycle control

Quadrature Encoder Interface (QEI): The DSPIC33EP128GM306-I/PT includes 2 QEI modules for high-precision position and speed feedback

CAN Bus: The DSPIC33EP128GM306-I/PT integrates a CAN 2.0B (ECAN) controller for industrial fieldbus or automotive network connectivity

High-Precision Analog Front-End: The DSPIC33EP128GM306-I/PT features a 12-bit ADC (up to 1.1 Msps, up to 18 analog input channels with multiple S&H), 3 analog comparators, and 2x 10-bit DACs

Industry-Leading Communication Interfaces: The DSPIC33EP128GM306-I/PT supports 2x UART, 2x SPI, and 2x I2C to meet the large-scale interconnect and multi-protocol gateway needs of complex systems

Signal Processing & Timers: The DSPIC33EP128GM306-I/PT includes 4x input capture, 4x output compare, and multiple 16/32-bit timers

Safety & System Management: The DSPIC33EP128GM306-I/PT features a hardware CRC engine, watchdog timer, and BOR/POR

Power & Package: The DSPIC33EP128GM306-I/PT operates from a 3.0V to 3.6V single supply, in TQFP-64 (10mm×10mm), industrial temperature range -40°C to +85°C

DSPIC33EP128GM306-I/PT Applications

High-Performance Motion Control: The DSPIC33EP128GM306-I/PT excels in dual-axis servo drives, robotic joints, BLDC, and PMSM with encoder feedback

Automotive Electronics: The DSPIC33EP128GM306-I/PT is ideal for electric water/oil pumps, fan control, body control modules, and CAN network nodes

Industrial Automation: The DSPIC33EP128GM306-I/PT is used in multi-protocol gateways (CAN/RS-485), multi-axis motion controllers, and distributed I/O stations

Digital Power: The DSPIC33EP128GM306-I/PT suits high-precision DC/DC converters, inverter front ends, and power factor correction (PFC)

Medical & Precision Instruments: The DSPIC33EP128GM306-I/PT supports precision fluid control, multi-parameter monitors, and analytical equipment

General Real-Time Control: The DSPIC33EP128GM306-I/PT suits complex embedded systems requiring CAN, multi-channel high-precision analog, and massive program memory

DSPIC33EP128GM306-I/PT Key Advantages

Top-Tier Memory & Dual-Axis Control: The DSPIC33EP128GM306-I/PT's 128KB Flash and 16KB SRAM comfortably accommodate extremely complex multi-axis FOC, CANopen stacks, user interface code, and field-upgradeable firmware, eliminating code-size concerns entirely; its four complementary PWM pairs and two QEIs drive two motors simultaneously

Powerful High-Precision Analog Front-End: The DSPIC33EP128GM306-I/PT's 12-bit ADC with up to 18 channels and multiple S&H circuits enables synchronous precision multi-channel current/voltage sensing; its two on-chip DACs and three comparators greatly simplify overcurrent protection, slope compensation, and ZVS/ZCS detection, significantly reducing system cost and PCB area

Industry-Leading Serial Resources: The DSPIC33EP128GM306-I/PT's CAN, dual UARTs, dual SPIs, and dual I2Cs provide unparalleled flexibility for multi-sensor integration, HMIs, and external communication, effortlessly building multi-protocol gateways

70 MIPS Powerful DSP Performance: The DSPIC33EP128GM306-I/PT's dsPIC33E core with single-cycle MAC efficiently handles dual-motor FOC, digital filtering, and real-time communication

High-Integration TQFP-64: The DSPIC33EP128GM306-I/PT packs powerful motion control, extensive communication interfaces, a precision analog front-end, and massive memory into a 10mm×10mm footprint, balancing high performance with a moderate PCB area

Industrial Temperature Range: The DSPIC33EP128GM306-I/PT operates from -40°C to +85°C, ensuring reliable operation in harsh environments

Mature Development Toolchain: The DSPIC33EP128GM306-I/PT is supported by free MPLAB X IDE and XC16 compiler, with motor-control libraries, CAN driver libraries, and MCC for fast development

Long-Term Availability: The DSPIC33EP128GM306-I/PT is a mature dsPIC33EP GM family product with long lifecycle and stable supply commitment

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FAQ

1. What is the DSPIC33EP128GM306-I/PT?
   The DSPIC33EP128GM306-I/PT is a high-capacity 16-bit Digital Signal Controller (DSC) from Microchip in a 64-lead TQFP package, running at 70 MIPS with 128KB Flash, 16KB SRAM, 4 complementary PWM pairs, 2 QEIs, CAN 2.0B, a 12-bit high-speed ADC, DACs, and dual UART/SPI/I2C, industrial temperature -40°C to +85°C.
2. What does the “-I/PT” suffix mean on the DSPIC33EP128GM306-I/PT?
   “-I” indicates the industrial temperature range (-40°C to +85°C), and “/PT” denotes the 64-lead TQFP package (10mm×10mm) of the DSPIC33EP128GM306-I/PT.
3. How does the GM series differ from the MC series in the context of the DSPIC33EP128GM306-I/PT?
   The GM series, including the DSPIC33EP128GM306-I/PT, enhances the MC series motor-control-specific peripherals (PWM, QEI) with higher analog integration, typically offering more ADC channels, on-chip DACs, and more flexible analog comparator configurations, making the DSPIC33EP128GM306-I/PT particularly well-suited for servo, robotics, and automotive sensor interfaces requiring a high-precision analog front-end and multi-axis control.
4. How many motors can the DSPIC33EP128GM306-I/PT control?
   With four complementary PWM pairs and two Quadrature Encoder Interfaces, the DSPIC33EP128GM306-I/PT can simultaneously drive two 3-phase BLDC motors or one high-precision servo motor with dual encoder feedback—perfect for dual-axis motion control.
5. Does the DSPIC33EP128GM306-I/PT have CAN? Does it support CAN-FD?
   The DSPIC33EP128GM306-I/PT integrates a CAN 2.0B (ECAN) controller supporting standard and extended frames. It does not support CAN-FD. Only an external CAN transceiver is needed for industrial or automotive networking.
6. What are the advantages of the 12-bit ADC and DACs on the DSPIC33EP128GM306-I/PT?
   The 12-bit ADC of the DSPIC33EP128GM306-I/PT provides 4× finer resolution than 10-bit with up to 18 analog channels, enabling synchronous precision multi-channel current/voltage sensing. The two on-chip 10-bit DACs provide flexible reference setting or slope compensation, greatly saving external analog chips, reducing system cost and PCB area.
7. What development tools are supported for the DSPIC33EP128GM306-I/PT?
   The DSPIC33EP128GM306-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 driver libraries for rapid development.
8. Does the DSPIC33EP128GM306-I/PT have an internal oscillator, or is an external crystal required?
   The DSPIC33EP128GM306-I/PT features an internal high-speed RC oscillator with an on-chip PLL; no external crystal is required. However, for precise CAN communication and high-performance motor control, an external crystal is recommended.
9. Are 128KB Flash and 16KB SRAM sufficient for the DSPIC33EP128GM306-I/PT?
   For extremely complex dual-axis FOC, CANopen stacks, HMI code, and field-upgradeable firmware, the DSPIC33EP128GM306-I/PT's 128KB Flash and 16KB SRAM provide top-tier storage space, comfortably accommodating future feature expansion. Higher-memory variants are available if needed.
10. Is the DSPIC33EP128GM306-I/PT suitable for new designs?
    The DSPIC33EP128GM306-I/PT is a mature, reliable high-end motor-control DSC that combines massive memory, a precision analog front-end, CAN, and multi-axis capability. For new designs requiring rich analog, networking, and abundant code space, the DSPIC33EP128GM306-I/PT is a highly cost-effective choice with long-term availability.