DSPIC33FJ256MC510T-I/PF - 16-bit DSC 40MIPS 256KB Flash | Microchip
MPN: DSPIC33FJ256MC510T-I/PF ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $9.85 | $9.85 |
| 10 | $8.95 | $89.50 |
| 100 | $7.9 | $790.00 |
| 500 | $7.2 | $3,600.00 |
| 1,000 | $6.65 | $6,650.00 |
DSPIC33FJ256MC510T-I/PF Overview
A digital signal controller combines the computational power of a digital signal processor (DSP) with the peripheral integration and control flexibility of a microcontroller (MCU). In the system hierarchy, the dsPIC33F sits between general-purpose MCUs and dedicated DSPs: it executes microcontroller-style deterministic interrupt-driven control loops while providing hardware DSP multiply-accumulate instructions for filtering and transformation tasks. This makes DSCs the preferred choice for closed-loop power conversion and motor drive systems.
Key features of the DSPIC33FJ256MC510T-I/PF include a 16-bit dsPIC core running at up to 40 MIPS from a 3.0V to 3.6V supply, 35 I/O pins, and motor-control-centric peripherals: high-speed PWM modules, up to four high-speed comparators with direct connections, and a high-speed ADC for simultaneous multi-channel current sampling. Connectivity covers CANbus, I2C, IrDA, LINbus, SPI, and UART/USART, enabling integration into automotive-style and industrial networks.
Architecturally, the dsPIC33F core pairs a 16-bit modified Harvard pipeline with two 40-bit accumulators and hardware DSP instructions, allowing single-cycle MAC operations at the full 40 MIPS clock rate. The flash-based program memory supports in-circuit self-programming, and the device offers seamless migration paths to PIC24 MCUs and dsPIC30F DSCs in similar packages, protecting software and hardware investment.
Typical applications include brushless DC motor drives, single- and 3-phase induction motor control, switched reluctance motor systems, and digital power supplies such as LLC and PFC stages. The high-speed PWM, ADC, and comparator set maps directly onto sensorless FOC control loops.
Design consideration: operate the device within its 3.0V to 3.6V supply window and budget decoupling per supply pin pair; the 100-pin TQFP with 0.5 mm pitch requires careful PCB land-pattern compliance for reliable assembly.
This page synthesizes distributor pricing, drop-in alternatives, pinout guidance, and practical design notes not found in the manufacturer datasheet, providing added selection value beyond the raw specification table.
Drop-in alternatives for DSPIC33FJ256MC510T-I/PF — 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 DSPIC33FJ256MC510T-I/PF (same form factor and footprint) — differing in Operating Temperature, Package, Core Architecture, RAM, ADC.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33FJ256MC510-I/PF
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33FJ256MC510AT-I/PF
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33FJ256GP510T-I/PT
✅ Drop-In✓ In Stock
$6.95 / Unit
View Datasheet →DSPIC33FJ256GP510-I/PF
✅ Drop-In✓ In Stock
$4.98 / Unit
View Datasheet →DSPIC33FJ128MC510A-I/PF
✅ Drop-In✓ In Stock
$8.1 / Unit
View Datasheet →DSPIC33FJ128MC710T-I/PF
✅ Drop-In✓ In Stock
$6.8 / Unit
View Datasheet →DSPIC33FJ256MC510T-I/PF Maximum Ratings & Electrical Characteristics
| Core | dsPIC33F 16-bit |
| Maximum Clock Speed | 40 MHz |
| Performance | 40 MIPS |
| Program Memory | 256KB (256K x 8) FLASH |
| RAM | 16KB |
| Supply Voltage | 3 V to 3.6 V |
| I/O Ports | 35 I/O |
| Connectivity | CANbus, I2C, IrDA, LINbus, SPI, UART/USART |
| Comparators | Up to 4 high-speed comparators |
| Peripherals | High-Speed PWM, ADC, Comparators |
| Package | 100-TQFP (14x14 mm), 0.5 mm pitch |
| Mounting Type | Surface Mount |
| Operating Temperature | -40C to +85C (Industrial) |
| Lead Finish | Lead-free, gull-wing terminals |
| Packaging | Tape & Reel (T suffix) |
| Life Cycle Stage | Active |
| Migration Path | PIC24 MCUs and dsPIC30F DSCs in similar packages |
DSPIC33FJ256MC510T-I/PF 100-tqfp (14x14 mm), 0.5 mm pitch Pin Configuration Guide
Pin configuration for DSPIC33FJ256MC510T-I/PF (100-tqfp (14x14 mm), 0.5 mm pitch 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 DSPIC33FJ256MC510T-I/PF.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33FJ256MC510T-I/PF is suitable for 6 applications: Brushless DC Motor Drives, Digital Power Supplies (PFC / LLC), Industrial Automation and Motor Control Networks, Automotive Auxiliary Motor Control, Sensor Signal Processing and Embedded DSP, Uninterruptible Power Supplies and Inverters.
Brushless DC Motor Drives
The DSPIC33FJ256MC510T-I/PF is purpose-built for BLDC motor control, combining high-speed PWM peripherals, a fast ADC for phase-current sampling, and up to four high-speed comparators with direct connections for cycle-by-cycle overcurrent protection. At 40 MIPS with single-cycle DSP MAC instructions, it executes sensorless field-oriented control (FOC) or trapezoidal commutation loops with sufficient computational headroom for speed and position estimators. Typical usage places the DSC between current-shunt amplifiers and a three-phase inverter gate-driver stage; the PWM module generates complementary outputs with programmable dead-time, while the ADC synchronizes sampling to PWM centers to avoid switching noise. The trade-off is that 3.0V to 3.6V logic requires level-shifting or 3.3V-compatible gate drivers.
Recommended
Digital Power Supplies (PFC / LLC)
For digitally controlled AC-DC and DC-DC converters, the DSPIC33FJ256MC510T-I/PF provides the deterministic control bandwidth needed for PFC and LLC topologies. Its 40 MIPS core closes current- and voltage-loop compensators at switching frequencies of several hundred kHz, while the high-speed PWM module offers phase-shifted, complementary, and push-pull operating modes with fine duty-cycle resolution. The simultaneous ADC sampling supports averaged current-mode control, and the four high-speed comparators implement hardware-level cycle-by-cycle current limiting independent of software latency. In a typical design the DSC reads input/output voltage and inductor current via ADC channels and directly drives the power-stage MOSFET drivers; the 256KB FLASH accommodates compensation tables, housekeeping firmware, and PMBus-style communication stacks using its UART/SPI/I2C ports.
Recommended
Industrial Automation and Motor Control Networks
In factory automation nodes, the DSPIC33FJ256MC510T-I/PF pairs motor-control peripherals with a CANbus interface, enabling integration into industrial fieldbus systems while driving local actuators. The 16-bit core at 40 MIPS handles both the real-time control loop and the communication stack concurrently, and the LINbus and IrDA options support auxiliary service links. With 256KB FLASH and 16KB RAM, the device stores full application firmware plus protocol handling, and 35 I/O lines interface sensors, limit switches, and HMI elements. A typical implementation uses CAN for command telemetry and the PWM/ADC subsystem for local servo or pump control; the main design consideration is the 3.0V to 3.6V supply, which simplifies power architecture with common 3.3V industrial rails.
Recommended
Automotive Auxiliary Motor Control
The CANbus, LINbus, and IrDA connectivity of the DSPIC33FJ256MC510T-I/PF makes it applicable to non-safety-critical automotive auxiliary systems such as window lifts, HVAC blowers, pumps, and throttle-by-wire positioners in the industrial temperature variant. The high-speed PWM drives H-bridge or three-phase stages for brushed and BLDC loads, while the ADC samples position sensors and current shunts for closed-loop operation. The four high-speed comparators provide hardware overcurrent protection essential in automotive electrical environments with load-dump transients. Designers should note this standard-grade part is rated -40C to +85C; automotive-qualified (AEC-Q100) derivatives should be selected for under-hood applications, and the 256KB FLASH supports OTA-style firmware updates via LIN or CAN bootloaders.
Recommended
Sensor Signal Processing and Embedded DSP
With hardware DSP multiply-accumulate instructions and two 40-bit accumulators, the DSPIC33FJ256MC510T-I/PF serves as an embedded signal-processing engine for sensor conditioning, including vibration analysis, power metering, and audio band filtering. The ADC converts multi-channel sensor inputs while the 40 MIPS core executes FIR/IIR filters, FFTs, and RMS calculations in real time. The 256KB FLASH holds coefficient tables and algorithm libraries, and 16KB RAM buffers data windows for spectral analysis. Communication to a host is handled via SPI or UART/USART at several Mbit/s. Typical designs sample at tens of kSPS per channel and compute per-cycle power quantities for energy meters, where the deterministic 16-bit architecture avoids the jitter of RTOS-based software DSP.
Recommended
Uninterruptible Power Supplies and Inverters
The DSPIC33FJ256MC510T-I/PF fits single- and 3-phase inverter and UPS control, where its high-speed PWM generates sinusoidal (SPWM) or space-vector modulated outputs and the ADC samples output voltage, current, and battery state. Microchip specifically cites single- and 3-phase induction motor and switched reluctance motor support in this family, and the same peripheral set serves DC-AC inversion. At 40 MIPS, the DSC closes multi-loop voltage/current regulators with embedded protection, while the comparators provide instantaneous hardware trip on fault current. The 256KB FLASH supports waveform tables, battery-charging state machines, and CAN-based parallel-unit communication for modular UPS architectures; the 3.0V to 3.6V supply integrates cleanly with isolated bias rails via standard LDOs.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33FJ256MC510T-I/PF — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33FJ256MC510-I/PF | DSPIC33FJ256MC510AT-I/PF | DSPIC33FJ256GP510T-I/PT | DSPIC33FJ128MC510A-I/PF |
|---|---|---|---|---|---|
| Package | 100-TQFP (14x14 mm) | 100-TQFP (14x14 mm) - same | 100-TQFP (14x14 mm) - same | 100-TQFP (14x14 mm) - same | 100-TQFP (14x14 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory (FLASH) | 256KB (256K x 8) | 256KB | 256KB | 256KB | 128KB |
| RAM | 16KB | 16KB | 16KB | 16KB | 16KB |
| Performance | 40 MIPS | 40 MIPS | 40 MIPS | 40 MIPS | 40 MIPS |
| Peripheral Focus | Motor Control (MC): high-speed PWM, ADC, 4 comparators | Motor Control (MC) - same | Motor Control (MC) - same | General Purpose (GP) | Motor Control (MC) - same |
| Supply Voltage | 3.0 V to 3.6 V | 3.0 V to 3.6 V | 3.0 V to 3.6 V | 3.0 V to 3.6 V | 3.0 V to 3.6 V |
| Packaging Format | Tape & Reel (T) | Tray | Tape & Reel (T) | Tape & Reel (T) | Tray |
Key Differentiators
- Dedicated motor-control peripheral set (vs DSPIC33FJ256GP510T-I/PT)
- Maximum flash density in the family footprint (vs DSPIC33FJ128MC510A-I/PF)
- Tape & Reel delivery for automated assembly (vs DSPIC33FJ256MC510-I/PF)
Design Notes
The DSPIC33FJ256MC510T-I/PF requires a tightly regulated 3.0V to 3.6V supply (nominal 3.3V). Place a 0.1uF ceramic capacitor at every VDD/VSS pin pair plus one bulk 4.7uF to 10uF capacitor near the device, and follow the Microchip datasheet recommendation for the VDDCORE capacitor, which is critical for stable internal regulator operation. This device is not 5V tolerant on I/O, so level-shifters or 3.3V-compatible transceivers are required when interfacing 5V CAN, RS-232, or legacy logic.
The 100-TQFP package uses a 0.5 mm terminal pitch with gull-wing leads. Ensure the PCB land pattern follows the Microchip datasheet footprint exactly, with solder-mask-defined or non-solder-mask-defined pads per IPC-style practice, and use a no-clean flux paste with a reflow profile suitable for large thermal-mass QFP bodies. Add thermal vias or copper pour under the package center where board space allows to assist heat spreading during high-speed PWM operation; estimated junction rise is modest at typical 3.3V logic loads, but verify against your worst-case ambient.
One distributor (Ampheo) labels this part obsolete while Microchip and DigiKey list the family as active - verify lifecycle with your distributor before committing production volumes. When migrating to the MC510A variant, review the family errata for flash write-erase endurance differences. Do not exceed 3.6V on VDD, and confirm the ECAN bit-timing settings against the actual bus length and sample-point requirements before deployment. Also install the correct dsPIC33FJ256MC510 device pack in MPLAB X before compiling.
Compliance Information
Package described as lead-free plastic TQFP in distributor package data (digchip, Vyrian). REACH, halogen-free, and conflict-minerals declarations not present in public listings - request official compliance documentation from Microchip.
