DSPIC33EP256GM310-I/PT - 16-bit 70 MIPS DSC 256KB Flash | Microchip
MPN: DSPIC33EP256GM310-I/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.42 | $6.42 |
| 10 | $5.78 | $57.80 |
| 100 | $5.12 | $512.00 |
| 500 | $4.63 | $2,315.00 |
| 1,000 | $4.18 | $4,180.00 |
DSPIC33EP256GM310-I/PT Overview
A digital signal controller combines the computational throughput of a DSP engine with the peripheral integration and deterministic control flow of a microcontroller. Within the power-management hierarchy of embedded systems, a DSC such as the dsPIC33EP256GM310 sits above generic MCUs for closed-loop control tasks, executing fixed-point MAC and DSP instructions in a single cycle while managing PWM, ADC, and encoder peripherals on-chip.
Key features include the 70 MIPS dsPIC DSC core, 256KB self-programming Flash, 16KB on-chip RAM, dual on-chip operational amplifiers, and rich motor-control peripherals: the Mouser listing summarizes this as 12 MC (motor control PWM channels), 8 input capture and 8 output compare channels, 2 quadrature encoder interfaces (QEI), and integrated OpAmps. Peripheral Pin Select (PPS) allows remapping of digital peripherals to many pins, easing layout constraints.
Architecturally, the dsPIC33E family pairs a modified Harvard 16-bit pipeline with DSP multiply-accumulate hardware, supporting precision sensor field-oriented control and digital power conversion. According to the Microchip dsPIC33EPXXXGM3XX/6XX/7XX data sheet (document 70000689d), remappable RPn/RPIn pins support PPS with documented limitations.
Typical applications include brushless DC and PMSM motor drives, digital power supplies, industrial automation, and embedded sensing systems that need DSP-class math with real-time control peripherals.
When designing with this device, budget RAM carefully: at 16KB it is modest for complex control algorithms with heavy buffering, and compiler stack sizing must be verified.
This page synthesizes distributor listings, cross-reference search results, and drop-in alternative analysis not found in the manufacturer datasheet.
Drop-in alternatives for DSPIC33EP256GM310-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 DSPIC33EP256GM310-I/PT (same form factor and footprint) — differing in Core Architecture, Package, Operating Temperature, Program Memory (Flash), Series.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33EP256GM310-E/PT
✅ Drop-In✓ In Stock
$4.95 / Unit
View Datasheet →DSPIC33EP256GM310-H/PT
✅ Drop-In✓ In Stock
$4.75 / Unit
View Datasheet →DSPIC33EP256GM310-I/PF
✅ Drop-In✓ In Stock
$4.14 / Unit
View Datasheet →DSPIC33EP256GM710-I/PT
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP256GM310-I/PT Maximum Ratings & Electrical Characteristics
| Core Processor | dsPIC33E (16-bit DSC) |
| Core Size | 16-bit |
| Speed | 70 MIPS |
| Program Memory Size | 256KB (85.5K x 24) Flash |
| RAM Size | 16KB |
| Supply Voltage | 3.3 V (3.0 V to 3.6 V) |
| Package | 100-TQFP (12x12 mm) |
| Mounting Type | Surface Mount |
| Operating Temperature | -40C to +85C (Industrial) |
| Motor Control PWM Channels | 12 |
| Input Capture / Output Compare | 8 / 8 |
| Quadrature Encoder Interfaces | 2 |
| On-chip OpAmps | 2 |
| Peripherals | Motor Control PWM, QEI, OpAmp, Peripheral Pin Select (PPS) |
| Series | dsPIC 33EP 256GM3 |
| Packaging | Tray |
DSPIC33EP256GM310-I/PT 100-tqfp (12x12 mm) Pin Configuration Guide
Pin configuration for DSPIC33EP256GM310-I/PT (100-tqfp (12x12 mm) 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-I/PT.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33EP256GM310-I/PT is suitable for 6 applications: BLDC/PMSM Motor Control, Digital Power Conversion, Industrial Automation and PLC I/O, Sensor Signal Conditioning and DSP Front Ends, Audio and Speech Processing Embedded Systems, Medical and Diagnostic Instrumentation Control.
BLDC/PMSM Motor Control
The DSPIC33EP256GM310-I/PT is purpose-built for precision motor control: its 12 motor-control PWM channels drive three-phase inverters with complementary outputs and dead-time control, while two quadrature encoder interfaces read position feedback directly without external counters. The 70 MIPS DSP core executes field-oriented control loops including Clarke/Park transforms and PI current regulators in real time. On-chip op amps condition shunt-resistor current signals, reducing external component count. In a typical sensorless or sensored drive, the ADC samples phase currents synchronized to the PWM center, and the control loop runs at 10-20 kHz, well within the 70 MIPS budget, making this device a single-chip replacement for MCU-plus-DSP two-chip solutions.
Recommended
Digital Power Conversion
For digital switched-mode power supplies, PFC stages, and LLC converters, the DSPIC33EP256GM310-I/PT provides the high-speed PWM resolution and DSP throughput needed for voltage- and current-mode digital control. The 8 output-compare channels and high-resolution motor-control PWM support phase-shifted and interleaved topologies, while the 70 MIPS core closes voltage loops with PID or notch-compensator algorithms. The on-chip op amps can serve as error-amplifier or current-shunt front ends. Designers benefit from firmware-adjustable compensation: loop tuning can be updated in the field without changing analog compensation networks, a key advantage over fixed analog controllers in multi-output and adaptive power systems.
Recommended
Industrial Automation and PLC I/O
In factory automation nodes, the DSPIC33EP256GM310-I/PT combines deterministic 70 MIPS control with extensive timer resources: 8 input-capture channels timestamp sensor events such as flow-meter or encoder pulses, while Peripheral Pin Select (PPS) lets designers route UART, SPI, and I2C to whichever of the many 100-pin I/Os best fits the PCB. The 256KB Flash accommodates protocol stacks and diagnostics logging, and the industrial -40C to +85C rating matches cabinet environments. Common roles include distributed I/O heads, stepper/servo sub-controllers, and conditioning front ends that preprocess signals with DSP filters before passing data upstream over CAN or serial links.
Recommended
Sensor Signal Conditioning and DSP Front Ends
The two on-chip operational amplifiers on the DSPIC33EP256GM310-I/PT amplify bridge and shunt signals close to the sensor, cutting noise pickup and board area before the ADC samples. The 70 MIPS core then applies DSP filters such as FIR/IIR, FFT-based spectral analysis, or RMS computation in fixed point, tasks that would overload a general-purpose MCU. This suits vibration monitoring, weigh-scale front ends, and ultrasonic flow measurement. With 16KB of RAM, designers should size filter buffers carefully, but typical single-channel conditioning loops fit comfortably. PPS further lets the analog-adjacent pins and serial outputs be placed optimally for a low-noise layout.
Recommended
Audio and Speech Processing Embedded Systems
The DSP engine of the DSPIC33EP256GM310-I/PT, with single-cycle MAC and DSP addressing modes, handles embedded audio tasks such as active noise cancellation, gain/limiter processing, and speech-band filtering at the 70 MIPS core rate. Using the DCI (data converter interface) serial port or remapped SPI through PPS, the controller connects to external audio codecs. The 256KB Flash stores coefficient tables, voice prompts, and multiple filter configurations. For cost-sensitive products such as intercoms, alarm sounders, and industrial audio annunciators, this DSC replaces a separate DSP chip, simplifying BOM and firmware tooling while retaining real-time deterministic processing.
Recommended
Medical and Diagnostic Instrumentation Control
Benchtop and portable diagnostic devices, such as pump controllers, sample handling actuators, and centrifuge drives, use the DSPIC33EP256GM310-I/PT to combine precise motor control (12 PWM channels, 2 QEI for closed-loop positioning) with signal processing on acquired sensor data. The 3.3V logic integrates cleanly with modern analog front ends, and the industrial temperature rating plus Microchip quality processes support reliable operation in clinical environments. The single-cycle DSP MAC accelerates baseline wandering removal and peak detection algorithms for biosignal channels. Firmware-in-the-loop calibration routines stored in the 256KB Flash enable per-unit compensation without external memory.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33EP256GM310-I/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33EP256GM310-E/PT | DSPIC33EP256GM310-H/PT | DSPIC33EP256GM310-I/PF | DSPIC33EP256GM710-I/PT |
|---|---|---|---|---|---|
| Package | 100-TQFP (12x12 mm) | 100-TQFP (12x12 mm) - same | 100-TQFP (12x12 mm) - same | 100-TQFP - same | 100-TQFP (12x12 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core Speed | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS |
| Flash Memory | 256KB (85.5K x 24) | 256KB | 256KB | 256KB | 256KB |
| RAM | 16KB | 16KB | 16KB | 16KB | 16KB |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +125C (Extended) | High-reliability grade | -40C to +85C (Industrial) | -40C to +85C (Industrial) |
| Supply Voltage | 3.3 V | 3.3 V | 3.3 V | 3.3 V | 3.3 V |
| Extended Peripherals | 12 MC PWM, 8/8 IC/OC, 2 QEI, 2 OpAmp | Identical to GM310 | Identical to GM310 | Identical to GM310 | Adds dual CAN2 modules (per family feature matrix) |
Key Differentiators
- Integrated on-chip op amps for current sensing (vs Generic 16-bit MCUs without op amps)
- Extended temperature drop-in option (vs DSPIC33EP256GM310-E/PT)
- Peripheral Pin Select flexibility (vs Fixed-pinout microcontrollers)
- Trade-off: modest 16KB RAM (vs DSPIC33EP256GM710-I/PT / higher-RAM DSCs)
Design Notes
Provide one 0.1uF ceramic decoupling capacitor at every VDD/VSS pair of the 100-pin TQFP, plus a bulk 10uF capacitor near the device. The dsPIC33E core draws peak current during 70 MIPS operation with all peripherals active; size the 3.3V rail with margin. Keep analog supplies (AVDD) filtered from digital VDD with an RC or ferrite network to preserve ADC and on-chip op-amp accuracy.
Use Peripheral Pin Select (PPS) to place high-speed digital peripherals away from the analog pins connected to the on-chip op amps and ADC inputs. Per Microchip data sheet 70000689d Section 11.4, some peripherals have PPS limitations; verify the allowed mapping table before routing so you do not discover a remap conflict at schematic review. Keep motor-control PWM traces short and route them away from encoder feedback lines.
The 16KB RAM is the most common bottleneck in this device: FOC control with multiple filter buffers, communication stacks, and logging can overflow the stack. Use the MPLAB XC16 linker map to verify worst-case stack and heap usage, and enable compiler stack-usage analysis. Also note the -I grade is rated to +85C ambient; if the drive enclosure runs hotter, select the -E grade (-40C to +125C), which is pin-compatible.
Compliance Information
Compliance status not captured in the verified web data fetched 2026-09-24. One Octopart comparison listing associated the dsPIC33EP series with Automotive/AEC-Q100 for certain variants, but qualification of this exact MPN was not verified. Confirm certificates on the Microchip product page.
