DSPIC33FJ256GP510-I/PF - 16-bit DSC 40MIPS 256KB Flash | Microchip
MPN: DSPIC33FJ256GP510-I/PF ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $7.62 | $7.62 |
| 10 | $6.85 | $68.50 |
| 100 | $6.1 | $610.00 |
| 500 | $5.52 | $2,760.00 |
| 1,000 | $4.98 | $4,980.00 |
DSPIC33FJ256GP510-I/PF Overview
A Digital Signal Controller combines the deterministic control structure of a microcontroller with the mathematical throughput of a DSP. Within the power management hierarchy, the dsPIC33F family sits alongside Microchip's PIC24 MCU line, sharing the same 16-bit core architecture and peripherals while adding DSP engine features such as a 17-bit by 17-bit single-cycle hardware multiplier, dual 40-bit accumulators, and a barrel shifter.
Key features of the DSPIC33FJ256GP510 include a modified Harvard architecture executing from flash at 40 MIPS (using internal PLL from a 7.37 MHz - 8 MHz FRC or external crystal), 85 general-purpose I/O pins, up to 2 CAN 2.0B modules, 3 UARTs, 2 SPI and 2 I2C ports, an 8-channel 500 ksps 10-bit or 12-bit ADC, and output-compare/input-capture peripherals suited to motor control and power conversion.
The GP (General Purpose) variant emphasizes communications and signal processing; its DSP engine performs MAC operations in a single instruction cycle, and hardware division plus dual operand fetch sustains real-time filtering (FIR/IIR) and FFT workloads without external memory. Flash endurance is rated for typical industrial program lifecycles, and self-programming supports field firmware updates.
Typical applications include industrial motor control and power inverter systems, digital power supplies (PFC, LLC), sensor signal conditioning and analysis, and communications gateways where CAN, UART, and SPI must run concurrently. The -I temperature grade (-40C to +85C) covers standard industrial environments.
Design consideration: the dsPIC33F core requires a stable 3.0V-3.6V supply with proper decoupling on all VDD/VSS pairs, and correct configuration of the oscillator PLL registers (FOSC) is a common source of bring-up issues - verify the fuse settings against the target crystal before first flash.
This page synthesizes distributor pricing, drop-in family alternatives (including the A-variant and AT automotive-screened parts), and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for DSPIC33FJ256GP510-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 DSPIC33FJ256GP510-I/PF (same form factor and footprint) — differing in Operating Temperature, Package, Connectivity, Core Architecture, Program Memory.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33FJ256GP510A-I/PF
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33FJ256GP510AT-I/PF
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33FJ256GP510ATI/PF
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33FJ256GP510AH/PF
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33FJ256GP510ATH/PF
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33FJ256GP710-I/PF
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33FJ128MC510A-I/PF
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$8.1 / Unit
View Datasheet →DSPIC33FJ256GP510-I/PF Maximum Ratings & Electrical Characteristics
| Core Processor | dsPIC33F (16-bit DSC) |
| Core Size | 16-bit |
| Maximum Speed | 40 MIPS |
| Program Memory Size | 256 KB (256K x 8) Flash |
| RAM Size | 30 KB x 8 |
| Supply Voltage Range | 3.0 V to 3.6 V |
| Number of I/O | 85 |
| ADC Resolution | 10-bit / 12-bit |
| ADC Channels | Up to 32 input channels (8-channel S/H ADC) |
| Connectivity | CAN, I2C, SPI, UART/USART |
| Operating Temperature | -40C to +85C |
| Package | 100-TQFP (14x14 mm), 0.5 mm pitch |
| Mounting Type | Surface Mount |
| Series | dsPIC33FJXXXGPX10 (General Purpose) |
| Interface Type | CAN, I2C, SPI, UART |
| Data Bus Width | 16 bit |
| Oscillator | Internal FRC + PLL, external crystal/oscillator support |
| RoHS Status | Compliant |
DSPIC33FJ256GP510-I/PF 100-tqfp (14x14 mm), 0.5 mm pitch Pin Configuration Guide
Pin configuration for DSPIC33FJ256GP510-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 DSPIC33FJ256GP510-I/PF.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33FJ256GP510-I/PF is suitable for 6 applications: Industrial Motor Control, Digital Power Supplies (PFC / LLC), Sensor Signal Conditioning and Analysis, CAN-based Industrial Networking Gateways, Audio Signal Processing, Automotive and Off-Highway Auxiliary Systems.
Industrial Motor Control
The DSPIC33FJ256GP510-I/PF fits industrial motor control because its 40 MIPS DSP core executes field-oriented control (FOC) loops with single-cycle 17x17 MAC operations, while its high-speed 10/12-bit ADC samples phase currents fast enough for 20 kHz+ PWM loops. In a typical topology, the ADC is triggered by the PWM period to measure current and bus voltage, the DSP engine runs Clarke/Park transforms and PI controllers, and output-compare channels drive gate drivers. The GP variant is ideal when the drive must also handle CANopen or Modbus communications via its 2 CAN modules and 3 UARTs. Trade-off: at large VIN-VOUT the external gate-driver stage dominates; the MCU adds no switching noise but software overhead must be budgeted within the 25 ns instruction cycle.
Recommended
Digital Power Supplies (PFC / LLC)
In digital power supplies, the DSPIC33FJ256GP510-I/PF provides the control intelligence for PFC and LLC stages: its 500 ksps 12-bit ADC with simultaneous sampling measures input voltage, output voltage, and current, while the 40 MIPS core closes voltage and current loops in firmware with deterministic 25 ns instruction timing. The part's output-compare peripherals generate phase-shifted or complementary PWM through external gate drivers, and the 256 KB flash leaves ample room for soft-start, protection state machines, and PMBus-style communication over UART or SPI. Compared with an analog controller, firmware control enables adaptive compensation and telemetry; the trade-off is that software latency must be characterized, and the 3.0V-3.6V supply rail requires level shifting to drive typical gate-driver logic thresholds.
Recommended
Sensor Signal Conditioning and Analysis
The DSPIC33FJ256GP510-I/PF excels at sensor signal conditioning because its DSP engine performs FIR and IIR filtering and FFT-based spectral analysis in real time, while the 12-bit 500 ksps ADC with up to 32 multiplexed channels acquires multiple sensors concurrently. A typical arrangement samples vibration, pressure, or acoustic sensors through an external anti-alias filter, applies a 128-tap FIR in the MAC engine, and streams reduced features over UART or CAN. The 30 KB SRAM holds filter delay lines and block buffers for 1024-point FFTs. Unlike a separate MCU plus DSP chip pair, this single-chip approach cuts BOM cost and board area; the trade-off is that total throughput is shared between control and analysis tasks, requiring careful ISR budgeting at 40 MIPS.
Recommended
CAN-based Industrial Networking Gateways
For industrial gateways, the DSPIC33FJ256GP510-I/PF offers two CAN 2.0B modules with hardware acceptance filters, three UARTs, two SPI and two I2C ports, all served by DMA - enabling protocol translation between CANopen, Modbus RTU, and custom serial links without CPU-starved bit-banging. The 85 I/O pins and 256 KB flash accommodate multiple protocol stacks plus a local control application simultaneously. The 40 MIPS core keeps servicing interrupt-heavy CAN traffic at 1 Mbps while running application logic with margin. Deployed at the intersection of factory networks and device-level buses, the part replaces multi-chip gateway designs; the main design consideration is that the I/O are 3.3V only, so CAN transceivers and RS-485 front ends with appropriate logic thresholds (e.g., MCP2551-class transceivers) should be selected.
Recommended
Audio Signal Processing
In embedded audio, the DSPIC33FJ256GP510-I/PF handles codec interfacing and real-time effects: its SPI ports connect to I2S-style audio codecs, the 40 MIPS DSP engine implements biquad filters, AGC, and echo cancellation with single-cycle MAC throughput, and 256 KB flash stores coefficients and application firmware. While it is not a dedicated audio DSP, the GP variant suits applications where audio processing is one subsystem among several - for example a controller that manages audio alerts, keypad scanning, and CAN messaging in machinery. The 12-bit ADC can digitize microphone signals directly for moderate-fidelity uses. Design consideration: for hi-fi dynamic range, an external audio codec with its own low-noise analog supply is recommended, since the dsPIC33F ADC noise floor and 3.3V rail limit achievable SNR.
Recommended
Automotive and Off-Highway Auxiliary Systems
Using the automotive-screened DSPIC33FJ256GP510AT-I/PF variant (TS 16949 screened, same die as the -I/PF), designers can deploy the 40 MIPS core, dual CAN modules, and 85 I/O in off-highway and auxiliary vehicle electronics such as hydraulic valve controllers, lighting managers, and telemetry nodes. The 100-pin TQFP at -40C to +85C covers cabin and engine-bay-adjacent enclosures, and the AT/ATH grades add manufacturing screening appropriate to automotive programs. Firmware control of valve PWM from ADC feedback of pressure and position runs comfortably in the DSP engine at 25 ns instruction timing. Key consideration: the standard -I grade is not AEC-Q100 qualified; automotive programs should specify the AT variants, which are drop-in identical on the same PCB footprint.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33FJ256GP510-I/PF — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33FJ256GP510A-I/PF | DSPIC33FJ256GP510AT-I/PF | DSPIC33FJ256GP710-I/PF | 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) | 256 KB | 256 KB | 256 KB | 512 KB | 128 KB |
| Maximum Speed | 40 MIPS | 40 MIPS | 40 MIPS | 40 MIPS | 40 MIPS |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C (TS 16949 screened) | -40C to +85C | -40C to +85C |
| Automotive Screening | No | No | Yes (TS 16949) | No | No |
| Peripheral Focus | General Purpose (GP): 2 CAN, 3 UART, DSP engine | General Purpose - same set | General Purpose - same set | General Purpose - same set | Motor Control (MC): motor-control PWM |
| Silicon Revision | Original (non-A) | A (revised stepping) | AT (A-silicon, screened) | Original | A (revised stepping) |
Key Differentiators
- General-purpose peripheral mix with dual CAN (vs DSPIC33FJ128MC510A-I/PF)
- 256 KB flash headroom (vs DSPIC33FJ256GP710-I/PF)
- Automotive-screened variant available on identical footprint (vs DSPIC33FJ256GP510AT-I/PF)
Design Notes
The dsPIC33F core requires a clean 3.0V-3.6V supply. Decouple every VDD pin pair with 0.1 uF ceramic capacitors placed within 2 mm of the pin, plus at least one bulk 10 uF capacitor per supply domain. If the AVDD rail feeds the ADC, filter it with an RC (10 ohm + 1 uF) or a ferrite bead from VDD to preserve ADC accuracy; noise on AVDD directly degrades the 12-bit converter's effective number of bits.
Oscillator configuration is the most common bring-up failure. The FOSC configuration bits select the clock source (XT, HS, EC, or FRC with PLL); a wrong PLL prescale/postscale setting can request a core clock beyond 40 MIPS, causing unstable operation. Always verify the crystal frequency against the PLL divider settings per the Microchip oscillator section, and keep the fail-safe clock limiter (FSCM) enabled in production firmware so the device falls back to FRC if the crystal fails.
The 100-pin TQFP (0.5 mm pitch) requires careful fan-out: use 4-mil traces under the package, place VSS via stitching near the exposed corner pins, and route the analog input traces away from PWM and CAN switching lines to minimize crosstalk into the ADC. Provide an unbroken ground plane on layer 2. For reflow, follow Microchip's MSL rating for the TQFP and bake if floor-life is exceeded.
With 85 I/O switching at up to 40 MIPS, simultaneous switching noise can create ground bounce. Group high-current outputs (e.g., PWM to gate drivers) on pins adjacent to VSS, series-terminate long clock or parallel-bus traces (22-33 ohm) to control ringing, and keep the ICSP programming pins (PGEC/PGED) accessible on a header for field debug and firmware updates.
Compliance Information
RoHS compliant and lead-free per distributor listings (DigiKey/Mouser) and Microchip product page. AEC-Q100: standard -I grade not qualified; the AT automotive-screened variants are built to TS 16949 standards. Obtain REACH and conflict-minerals declarations from Microchip compliance portal.
