DSPIC33EP256GM310-H/PT - 70 MIPS DSC, 256KB Flash | Microchip
MPN: DSPIC33EP256GM310-H/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.95 | $6.95 |
| 10 | $6.25 | $62.50 |
| 100 | $5.6 | $560.00 |
| 500 | $5.1 | $2,550.00 |
| 1,000 | $4.75 | $4,750.00 |
DSPIC33EP256GM310-H/PT Overview
A digital signal controller combines the computational strengths of a microcontroller (MCU) with the mathematical throughput of a digital signal processor (DSP) in a single chip. Within the embedded system hierarchy, the dsPIC33EP sits above basic 8-bit MCUs and below application processors, making it the classic choice for real-time closed-loop control where fast multiply-accumulate operations, deterministic interrupt latency, and rich motor-control peripherals are required.
Key features include the 70 MIPS 16-bit Harvard-architecture dsPIC core with DSP engine, 256 KB of self-programmable Flash with ECC, 16 KB of SRAM, integrated op-amps, 12 motor-control PWM-related modules (8/8 IC/OC channels, 2 quadrature encoders), and 3.3V single-supply operation. Jotrin Electronics lists the part as an automotive-class 16-bit dsPIC33E controller, and Octopart reports stock of 17,840 pieces updated on Aug 24, 2026.
Architecturally, the dsPIC33EP256GM310 executes single-cycle MAC and DSP multiply operations, supports two address generation units, and provides Peripheral Pin Select (PPS) for flexible remapping of digital I/O functions per Microchip's dsPIC33EPXXXGM3XX data sheet. The integrated high-speed ADCs, comparators, and on-chip operational amplifiers reduce external analog component count in current-sensing and signal-conditioning chains.
Typical applications include brushless DC (BLDC) and PMSM motor drives, digitally controlled switch-mode power supplies, solar inverters, power-factor-correction stages, and industrial automation nodes. The combination of high-resolution PWM, quadrature encoder interfaces, and fast ADCs makes it especially suited to precision motor control systems described on Microchip's product page.
Design consideration: the 100-pin TQFP presents fine-pitch (0.5 mm) leads, so plan for careful PCB land-pattern design and adequate decoupling on every VDD/VSS pair; also budget 3.3V rail sequencing and MCLR programming access early in the layout.
This page synthesizes distributor stock data, same-family drop-in alternatives, and practical design notes not found in the manufacturer datasheet, giving engineers a one-stop selection reference. Pricing shown is as of 2026-09-24.
Drop-in alternatives for DSPIC33EP256GM310-H/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 DSPIC33EP256GM310-H/PT (same form factor and footprint) — differing in Core Architecture, Series, Package, Supply Voltage, Core Processor.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33EP256GM310-I/PT
✅ Drop-In✓ In Stock
$4.18 / Unit
View Datasheet →DSPIC33EP256GM310-E/PT
✅ Drop-In✓ In Stock
$4.95 / Unit
View Datasheet →DSPIC33EP512GM310-I/PT
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$6.38 / Unit
View Datasheet →DSPIC33EP128GM310-I/PT
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP256GM710-I/PT
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP256GM310-H/PT Maximum Ratings & Electrical Characteristics
| Core Processor | dsPIC33E 16-bit DSC core |
| Core Architecture | Harvard |
| Maximum CPU Speed | 70 MIPS |
| Core Size | 16-bit |
| Program Memory Size | 256 KB Flash |
| RAM Size | 16 KB |
| Supply Voltage | 3.3 V |
| Package | 100-pin TQFP (PT) |
| Mounting Type | Surface Mount |
| Peripherals - Capture/Compare | 8 IC / 8 OC channels |
| Quadrature Encoders | 2 (QEI) |
| Integrated Op-Amps | 2 |
| Motor Control Features | Motor Control PWM family (GM series, 12 motor-control channel designation per Mouser) |
| Pin Select | Peripheral Pin Select (PPS) |
| Series / Qualification | dsPIC33EP family, automotive (per Jotrin) |
| Packaging | Tray |
DSPIC33EP256GM310-H/PT 100-pin tqfp (pt) Pin Configuration Guide
Pin configuration for DSPIC33EP256GM310-H/PT (100-pin tqfp (pt) 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 DSPIC33EP256GM310-H/PT.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33EP256GM310-H/PT is suitable for 6 applications: BLDC / PMSM Motor Drives, Digital Power Conversion, Industrial Automation and Robotics, Automotive Body and Powertrain Subsystems, Embedded Sensing and Instrumentation, Audio Signal Processing.
BLDC / PMSM Motor Drives
The DSPIC33EP256GM310-H/PT is purpose-built for precision brushless DC and permanent-magnet synchronous motor control. Its 70 MIPS DSP engine executes field-oriented control (FOC) current loops in a few microseconds, while 8 output-compare channels and motor-control PWM outputs drive three-phase inverter bridges with complementary or independent modes. Two quadrature encoder interfaces decode position feedback, and 2 integrated op-amps amplify shunt-resistor current signals before the ADCs sample them, eliminating external op-amp stages. Placed at the heart of the inverter board, the controller closes torque, speed, and position loops with deterministic latency; the key trade-off is that the 3.3V logic requires gate-driver ICs to interface with power stages.
Recommended
Digital Power Conversion
In digitally controlled switch-mode power supplies, PFC stages, and solar inverters, the dsPIC33EP256GM310-H/PT replaces analog control loops with firmware-defined compensation. The 70 MIPS core and single-cycle MAC execute PI/PID compensation for voltage and current loops at switching frequencies up to several hundred kHz, while high-speed input captures synchronize the controller to the power stage. Peripherals such as output-compare PWM and the on-chip comparators support cycle-by-cycle current limiting - a critical safety function. The Peripheral Pin Select feature lets engineers route PWM and feedback signals optimally during board bring-up. Compared with dedicated digital-power ASICs, the DSC offers full algorithm flexibility; the trade-off is that the designer assumes responsibility for control-loop stability firmware.
Recommended
Industrial Automation and Robotics
Factory automation nodes - servo drives, conveyor controllers, and robotic joint actuators - benefit from the DSPIC33EP256GM310-H/PT's blend of DSP throughput and general-purpose MCU peripherals. The 2 quadrature encoder interfaces track incremental encoders on multiple axes, 8 input-capture channels timestamp sensor events for speed calculation, and the 256 KB Flash accommodates motion profiles plus communication stacks. Integrated op-amps condition analog sensor signals (load cells, potentiometers) without extra components. In a multi-axis robot joint, the DSC typically runs the servo loop locally while a supervisory PLC sends setpoints over a fieldbus; the design consideration is adding external transceiver ICs for industrial network physical layers.
Recommended
Automotive Body and Powertrain Subsystems
Distributor data (Jotrin, Octopart) classifies the DSPIC33EP256GM310-H/PT as automotive-class, part of a series listed with Automotive, AEC-Q100 attributes. It suits subsystems such as electric power steering auxiliary control, cooling-fan motor drives, pump control, and BLDC actuators, where 70 MIPS deterministic control and rich PWM resources are required. The 100-pin TQFP provides ample GPIO for diagnostic inputs, relay drivers, and lamp interfaces. When designing for the vehicle environment, engineers must respect load-dump transient requirements on the supply path, add CAN/LIN transceivers for network connectivity, and verify the exact temperature grade of the -H suffix against the module's under-hood thermal profile before release.
Recommended
Embedded Sensing and Instrumentation
The integrated analog front end - op-amps, comparators, and ADCs of the DSPIC33EP256GM310-H/PT - makes it effective for smart sensors, portable instrumentation, and condition-monitoring nodes. The 70 MIPS DSP engine runs FFT and FIR filtering for vibration analysis and power-quality measurement, computing RMS, THD, and harmonic content in real time. The 256 KB Flash stores calibration tables and historical data logs, while Peripheral Pin Select adapts the digital interface (UART/SPI/I2C) to whatever peripheral mix the sensor head requires. Design tip: pair the controller with a precision voltage reference and consider averaging/oversampling firmware techniques to reach higher effective resolution on noisy channels, since the DSC is a generalist rather than a 24-bit precision converter.
Recommended
Audio Signal Processing
With a 70 MIPS DSP engine offering single-cycle MAC, the dsPIC33EP256GM310-H/PT can implement audio effects, echo cancellation, active noise-control, and intercom processing at voice and light-audio bandwidths. The Harvard architecture streams samples through the DSP module without von-Neumann bus contention, and output-compare/PWM channels can reconstruct analog audio via PWM-DAC techniques with appropriate external filtering. Integrated op-amps can serve as microphone preamplifier or line-output buffer stages in cost-sensitive designs. Trade-offs: this is not a floating-point audio DSP, so algorithms must be written in fixed-point, and complex multichannel studio-grade processing generally warrants a dedicated audio DSP. For embedded voice intercoms and ANC headphones, however, the single-chip integration is compelling.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33EP256GM310-H/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33EP256GM310-I/PT | DSPIC33EP256GM310-E/PT | DSPIC33EP512GM310-I/PT | DSPIC33EP128GM310-I/PT | DSPIC33EP256GM710-I/PT |
|---|---|---|---|---|---|---|
| Package | 100-TQFP (PT) | 100-TQFP (PT) - same | 100-TQFP (PT) - same | 100-TQFP (PT) - same | 100-TQFP (PT) - same | 100-TQFP (PT) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core Speed | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS |
| Flash Memory | 256 KB | 256 KB | 256 KB | 512 KB | 128 KB | 256 KB |
| RAM | 16 KB | 16 KB | 16 KB | 16 KB | 16 KB | 16 KB |
| Supply Voltage | 3.3 V | 3.3 V | 3.3 V | 3.3 V | 3.3 V | 3.3 V |
| Temperature Grade | -H grade | -I industrial | -E extended | -I industrial | -I industrial | -I industrial |
| CAN / MCPWM Peripherals | GM3xx allocation | GM3xx allocation | GM3xx allocation | GM3xx allocation | GM3xx allocation | GM7xx expanded allocation |
| Lifecycle Status | Active | Active | Active | Active | Active | Active |
Key Differentiators
- Integrated op-amps reduce analog BOM (vs DSPIC33EP256GM310-I/PT)
- Extended temperature option on identical footprint (vs DSPIC33EP256GM310-E/PT)
- Memory scalability without relayout (vs DSPIC33EP128GM310-I/PT and DSPIC33EP512GM310-I/PT)
Design Notes
The 100-pin TQFP has a 0.5 mm lead pitch, so use IPC-compliant land patterns and consider a damp-heat/MSL bake per the shipping label before reflow. Place 100 nF ceramic decoupling capacitors at every VDD/VSS pair, as close to the pins as possible, plus one bulk 10 uF capacitor per power domain. Route AVDD separately with an RC filter (for example, ferrite bead plus 1 uF) from the digital 3.3V rail to preserve ADC and op-amp accuracy - estimated benefit is reduced digital switching noise coupling into analog readings.
Use Peripheral Pin Select (PPS) strategically during layout: because most digital peripherals on the dsPIC33EP256GM310 are remappable, you can optimize trace routing after schematic review rather than forcing the PCB to a fixed pin map. Reserve the programming/debug pins (MCLR, PGD, PGC) on a 5-pin header (ICSP) even in production boards - field firmware updates via bootloader plus ICSP fallback prevents scrapped boards. Keep oscillator traces short and guarded, and follow the datasheet's pin tables (document 70000689) for analog-capable pin assignments.
Three common mistakes with this family: (1) assuming a substitute is drop-in - only same-package, same-family parts like DSPIC33EP256GM310-I/PT or DSPIC33EP512GM310 are pin-to-pin; dsPIC33F or DSPIC33CH parts are NOT. (2) Confirming the temperature suffix late: -H, -I, and -E grades differ in range and qualification, so verify against the worst-case ambient of your enclosure, not the datasheet typical. (3) Forgetting that Flash endurance/retention limits EEPROM emulation frequency - implement wear-leveling in your data-logging firmware to preserve lifetime.
Compliance Information
Distributor listings (Jotrin, Octopart) associate the dsPIC33EP256GM310 series with 'Automotive, AEC-Q100' attributes; RoHS/REACH status should be confirmed via Microchip's official product page or environmental data sheet.
