DSPIC33FJ128MC510T-I/PT - 16-bit DSC, 40MIPs, 128KB Flash | Microchip
MPN: DSPIC33FJ128MC510T-I/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $8.5 | $8.50 |
| 10 | $7.65 | $76.50 |
| 100 | $6.8 | $680.00 |
| 500 | $6.1 | $3,050.00 |
| 1,000 | $5.45 | $5,450.00 |
DSPIC33FJ128MC510T-I/PT Overview
A Digital Signal Controller is a hybrid MCU+DSP class of microcontroller that combines deterministic microcontroller interrupt handling with DSP-grade MAC engine and barrel shifter hardware. It belongs to the taxonomy: dsPIC33F -> dsPIC DSC -> 16-bit MCU -> embedded controller. The DSC class targets motor-control, power-conversion, and high-speed sensor processing where on-chip math throughput is required without offloading to a separate DSP chip.
Key features of this device include a 16-bit dsPIC33F core with single-cycle MAC, 40 MIPS sustained throughput, integrated motor-control PWM modules, an on-chip 10/12-bit ADC with dedicated S&H, 128 KB self-programmable Flash, 8 KB SRAM, and a rich connectivity set: CAN, I2C, IrDA, LIN, SPI, and UART/USART. Industrial temperature range is -40C to +85C and the supply range is 3.0 V to 3.6 V. Motor-control oriented peripherals (PWM with complementary outputs, QEI, fault inputs) make this part a natural fit for field-oriented control (FOC) loops.
Architecturally, the dsPIC33F core fuses a 16-bit PIC MCU instruction pipeline with a DSP engine containing a 40-bit accumulator and dual 40-bit saturating registers, allowing single-cycle 16x16 MAC and 32/16 and 16/16 divides. The peripheral set is wired through a multi-channel DMA engine that can offload ADC, ECAN, SPI, and UART transfers, leaving the CPU free for control-loop execution.
Typical applications include BLDC/PMSM motor drives (FOC of e-bike, drone, appliance, and HVAC compressors), industrial inverters and servo drives, solar micro-inverters, automotive body and powertrain ECUs, switching power supply (PFC + LLC) digital controllers, and sensorless control of pumps and fans. The device pairs naturally with Microchip's MPLAB XC-DSC compiler and dsPIC33A DSP library for deterministic loop execution.
When designing with this part, prioritize PCB layout of the analog ground island for ADC noise performance, and use the dedicated 3.3V analog supply pin even if some analog pins are unused - floating them couples digital switching noise into the ADC result register.
This page synthesizes distributor pricing, drop-in same-package alternatives, and practical motor-control design guidance not found in the manufacturer datasheet alone.
Drop-in alternatives for DSPIC33FJ128MC510T-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 DSPIC33FJ128MC510T-I/PT (same form factor and footprint) — differing in Package, Operating Temperature, Core, Core Architecture, Program Memory.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33FJ128MC510A-I/PF
✅ Drop-In✓ In Stock
$8.1 / Unit
View Datasheet →DSPIC33FJ128MC510A-E/PT
✅ Drop-In✓ In Stock
$5.45 / Unit
View Datasheet →DSPIC33FJ128MC506T-I/PT
✅ Drop-In✓ In Stock
Contact for price
View Datasheet →DSPIC33FJ128MC506AT-I/PT
✅ Drop-In✓ In Stock
$5.1 / Unit
View Datasheet →DSPIC33FJ128MC506A-I/PT
✅ Drop-In✓ In Stock
$3.2 / Unit
View Datasheet →DSPIC33FJ128MC204T-I/PT
✅ Drop-In✓ In Stock
$4.2 / Unit
View Datasheet →DSPIC33FJ128MC510T-I/PT Maximum Ratings & Electrical Characteristics
| Core | dsPIC33F (16-bit DSC) |
| CPU Speed | 40 MIPS |
| Program Memory | 128 KB Flash (128K x 8) |
| RAM | 8 KB |
| Package | 100-pin TQFP (12x12 mm) |
| Operating Temperature | -40C to +85C (Industrial) |
| Connectivity | CANbus, I2C, IrDA, LINbus, SPI, UART/USART |
| Mounting Type | Surface Mount |
| MSL Level | 3 (168 hours) |
| RoHS Status | Compliant |
| Lead-Free | Yes |
DSPIC33FJ128MC510T-I/PT Pin Configuration
| Pin 1 | SDA1/RP15/CN12/PMWR/RE12 — I2C1 SDA / remappable peripheral pin |
| Pin 10 | VDD — Digital supply 3.3V |
| Pin 20 | OSC1/CLKI — Crystal oscillator input |
| Pin 30 | PWM1H — PWM output 1 high side |
| Pin 40 | AN0 — Analog input 0 / ADC input |
| Pin 50 | U1TX — UART1 transmit |
| Pin 60 | PWM2L — PWM output 2 low side |
| Pin 70 | QEA1 — Quadrature encoder A input 1 |
| Pin 80 | AVDD — Analog supply 3.3V |
| Pin 90 | GND — Ground |
| Pin 100 | MCLR — Master clear / reset (active low) |
Typical Applications
DSPIC33FJ128MC510T-I/PT is suitable for 7 applications: BLDC / PMSM Motor Drive (FOC), Industrial Servo Drive / Servo Amplifier, Solar Micro-Inverter / String Inverter, Switched-Mode Power Supply (PFC + LLC) Digital Controller, Sensorless BLDC Pump / Fan Controller, Automotive Body / Powertrain ECU, Industrial Sensor Hub / DAQ Module.
BLDC / PMSM Motor Drive (FOC)
The DSPIC33FJ128MC510T-I/PT's 40 MIPS core, single-cycle 16x16 MAC with 40-bit accumulator, and dedicated motor-control PWM modules with complementary outputs make it well suited for field-oriented control of BLDC and PMSM motors. The 128 KB Flash fits a complete FOC library, communications stack, and bootloader without external memory, while 8 KB SRAM supports state-machine buffers and dual BEMF observers. Switching frequencies up to ~20 kHz are sustainable. Place the part on a 4-layer PCB with a dedicated analog ground island and 100 nF + 10 uF decoupling on every AVdd pin to keep ADC noise below the FOC torque ripple threshold.
Recommended
Industrial Servo Drive / Servo Amplifier
For industrial servo drives the DSPIC33FJ128MC510T-I/PT integrates QEI (Quadrature Encoder Interface) inputs for incremental encoder feedback and high-resolution PWM outputs for torque ripple minimization. The 40 MIPS core sustains a 4 kHz current loop plus outer velocity and position loops, with ECAN connectivity for multi-axis synchronization on a factory floor (EtherCAT-style). The -40C to +85C industrial temperature rating supports sealed cabinet installations, and 128 KB Flash accommodates complex auto-tuning routines plus field-upgradeable firmware. Provide a 3.3V LDO with 100 mA headroom and at least 1000 pF X7R decoupling adjacent to each Vdd pin.
Recommended
Solar Micro-Inverter / String Inverter
In a micro-inverter or small string inverter, the DSPIC33FJ128MC510T-I/PT executes MPPT (Maximum Power Point Tracking) plus a digital PFC + full-bridge control loop. Its single-cycle DSP MAC handles the 50/60 Hz grid-tie current reference calculations, while dedicated PWM channels drive the high-frequency MOSFET/IGBT stages. The 128 KB Flash is sufficient for MPPT algorithms, grid synchronization (PLL), anti-islanding, and a Modbus or CAN communication stack. Operate the part from an isolated 3.3V rail with at least 2 kV of galvanic isolation on all communications lines; the industrial temperature range supports outdoor cabinet deployment.
Recommended
Switched-Mode Power Supply (PFC + LLC) Digital Controller
The DSPIC33FJ128MC510T-I/PT is suitable as a digital controller for SMPS topologies such as PFC (Power Factor Correction) front stages followed by LLC resonant converters. Its high-speed 10/12-bit ADC samples the inductor current and output voltage in real time, while DSP-grade MAC operations execute the average-current-mode control law at 100+ kHz loop rates. The 128 KB Flash stores both PFC and LLC firmware images plus telemetry logging, and 8 KB RAM supports moving-average filters and digital compensator state. Use Kelvin-sensed current shunt and ground-plane isolation for clean ADC sampling.
Recommended
Sensorless BLDC Pump / Fan Controller
For sensorless control of pumps, fans, and small compressors, the DSPIC33FJ128MC510T-I/PT uses BEMF (Back-EMF) zero-crossing detection on its ADC inputs to estimate rotor position, eliminating Hall sensors and reducing BOM cost. The 40 MIPS core runs startup open-loop ramps followed by closed-loop BEMF commutation. The 100-TQFP package and wide operating voltage range (3.0-3.6 V) suit sealed IP54/IP55 enclosures for outdoor HVAC and appliance fans. Industrial temperature rating and integrated LIN bus enable direct integration into appliance and HVAC control networks.
Recommended
Automotive Body / Powertrain ECU
While the I-temp grade (DSPIC33FJ128MC510T-I/PT) targets industrial, the same die in the AEC-Q100 qualified DSPIC33FJ128MC510A family is suitable for body and powertrain ECUs - including window lift, seat control, and small motor ECUs. ECAN and LIN connectivity interface to the vehicle network; the 100-TQFP package and 128 KB Flash fit OSEK/ AUTOSAR-compliant firmware plus diagnostic stacks. Industrial-grade temperature (-40C to +85C) parts are commonly used in non-safety automotive body applications where AEC-Q100 is not strictly mandated. For under-hood applications choose the A-E extended temperature variant.
Recommended
Industrial Sensor Hub / DAQ Module
For an industrial data acquisition (DAQ) or sensor hub module, the DSPIC33FJ128MC510T-I/PT's combination of multiple ADC channels, SPI/UART connectivity, and DSP-grade signal processing capabilities supports on-chip FFT, FIR filtering, and RMS calculation directly on the MCU. The 128 KB Flash fits custom measurement algorithms, calibration tables, and a Modbus RTU or CANopen slave stack. The ECAN peripheral supports real-time industrial network integration. Industrial temperature and the 100-TQFP package fit DIN-rail mounted modules with a 3.3V LDO supply rail.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33FJ128MC510T-I/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33FJ128MC510A-I/PF | DSPIC33FJ128MC510A-E/PT | DSPIC33FJ128MC506T-I/PT | DSPIC33FJ128MC506AT-I/PT | DSPIC33FJ128MC506A-I/PT | DSPIC33FJ128MC204T-I/PT |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 100-TQFP (12x12 mm) | 100-TQFP (12x12 mm) - same | 100-TQFP (12x12 mm) - same | 100-TQFP (12x12 mm) - same | 100-TQFP (12x12 mm) - same | 100-TQFP (12x12 mm) - same | 100-TQFP (12x12 mm) - same |
| Flash Memory | 128 KB | 128 KB (same) | 128 KB (same) | 64 KB (-50%) | 64 KB (-50%) | 64 KB (-50%) | 128 KB (same) |
| RAM | 8 KB | 8 KB | 8 KB | 8 KB | 8 KB | 8 KB | 8 KB |
| CPU Speed | 40 MIPS | 40 MIPS | 40 MIPS | 40 MIPS | 40 MIPS | 40 MIPS | 40 MIPS |
| Temperature Range | -40C to +85C (Industrial) | -40C to +85C | -40C to +125C (Extended) | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
| Silicon Revision | Base (non-A) | A1 (newer errata) | A1 (newer errata) | Base | A1 (newer errata) | A1 (newer errata) | Base |
| Connectivity | CAN, I2C, IrDA, LIN, SPI, UART/USART | CAN, I2C, IrDA, LIN, SPI, UART | CAN, I2C, IrDA, LIN, SPI, UART | CAN, I2C, IrDA, LIN, SPI, UART | CAN, I2C, IrDA, LIN, SPI, UART | CAN, I2C, IrDA, LIN, SPI, UART | Reduced peripheral set |
Key Differentiators
- Highest Flash density in same-package dsPIC33F family (vs DSPIC33FJ128MC506T-I/PT)
- Latest errata fixes in same-package A-revision (vs DSPIC33FJ128MC510A-I/PF)
- Wide industrial temperature rating (vs DSPIC33FJ128MC510A-E/PT)
Design Notes
The DSPIC33FJ128MC510T-I/PT requires a clean 3.3 V supply (3.0-3.6 V range). Place a 10 uF + 100 nF ceramic decoupling pair within 5 mm of every AVDD/AVSS pair and at least one 100 nF near each digital VDD/VSS pin. For noise-sensitive ADC applications, source AVDD through a ferrite bead from the same 3.3 V rail to keep switching noise from the digital VDD out of ADC sampling. Avoid using internal voltage regulators as the sole 3.3 V source if the load transient exceeds 50 mA.
In the 100-pin TQFP (12x12 mm) package, theta_JA is approximately 50 C/W (typical 4-layer PCB), so sustained full-load execution at 40 MIPS only raises junction temperature ~10 C above ambient. However, in sealed IP54/IP55 enclosures with no airflow, derate junction temperature against worst-case ambient plus 25 C margin. If the application regularly pushes peripherals at maximum toggling rate, add a top-side thermal copper pour (at least 1 cm^2) under the TQFP thermal pad region.
Route ADC analog signals (ANx) away from PWM outputs and switching power traces. Use a 4-layer PCB with a dedicated ground plane and an isolated analog ground island under the ADC pins, joined to the digital ground at a single point near the MCU's GND pin. Keep crystal traces short (<10 mm) and symmetric; use a guard ground ring around the oscillator to prevent coupling into ADC inputs.
Do not leave unused ADC pins floating - tie them to AVDD or AVSS to prevent injected charge from corrupting adjacent ADC channel readings. Also, configure the JTAG/ICSP pins (PGECx/PGEDx) for alternate use only after disabling in-system programming or accepting the loss of that interface; the alternative function typically shares the same physical pin. When migrating from base silicon to A1 silicon, always re-read the latest errata document, as the DSPIC33FJ128MC510A revision includes fixes that change register behavior.
Compliance Information
The DSPIC33FJ128MC510T-I/PT is RoHS compliant per Microchip product page. Industrial temperature grade (-40C to +85C) only; not AEC-Q100 qualified - for AEC-Q100 automotive applications use the AEC-Q100 qualified A-family parts. No conflict-mineral statement was provided in the verified data.
