DSPIC33EP256GM310-H/PF - 70 MIPS 16-bit DSC 256KB Flash | Microchip
MPN: DSPIC33EP256GM310-H/PF ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.92 | $6.92 |
| 10 | $6.24 | $62.40 |
| 100 | $5.56 | $556.00 |
| 500 | $4.98 | $2,490.00 |
| 1,000 | $4.45 | $4,450.00 |
DSPIC33EP256GM310-H/PF Overview
A digital signal controller combines the computational throughput of a DSP with the peripheral integration and control-oriented architecture of a microcontroller. Within the power-management hierarchy, the dsPIC33EP family sits alongside general-purpose MCUs and dedicated DSPs, offering deterministic single-cycle MAC and DSP instructions, fast interrupt handling, and rich on-chip analog and timing peripherals on one silicon die.
Key differentiating features include 12 channels of motor-control PWM with complementary outputs and dead-time control, four integrated operational amplifiers, 8 input-capture and 8 output-compare channels, 2 quadrature encoder interfaces (QEI), multiple UART/SPI/I2C serial ports, and a high-speed 12-bit ADC suited for current sensing in closed-loop control loops.
Architecturally, the dsPIC33E core uses a modified Harvard pipeline with dedicated addressing modes for DSP algorithms, allowing FIR filters, PI/PID loops, and field-oriented control (FOC) transforms to execute with single-cycle multiply-accumulate throughput. The 70 MIPS core clock is derived from an internal PLL, and code is executed from zero-wait-state Flash at full speed.
Typical applications include brushless DC (BLDC), permanent-magnet synchronous motor (PMSM) and AC-induction motor drives, digital power supplies and inverters, automotive auxiliary control units, and industrial motion-control products, where the 12 PWM channels and integrated op amps reduce external component count.
When designing with this device, budget the PWM dead-time and ADC sampling points carefully in sensorless or FOC schemes, and use the integrated op amps for current-shunt amplification to keep analog noise low. Ensure 100nF decoupling on every VDD/VSS pair.
This page synthesizes verified distributor listings, drop-in family alternatives, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for DSPIC33EP256GM310-H/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 DSPIC33EP256GM310-H/PF (same form factor and footprint) — differing in Package, Core Architecture, Core Processor, Qualification, RAM.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33EP256GM310-I/PF
✅ Drop-In✓ In Stock
$4.14 / Unit
View Datasheet →DSPIC33EP256GM310-E/PF
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33EP256GM310-E/PT
✅ Drop-In✓ In Stock
$4.95 / Unit
View Datasheet →DSPIC33EP512GM310-H/PF
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP128GM310-H/PF
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$4.75 / Unit
View Datasheet →DSPIC33EP256GM610-H/PF
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP256GM310-H/PF Maximum Ratings & Electrical Characteristics
| Core Processor | dsPIC33E (16-bit DSC core) |
| Core Architecture | Modified Harvard, 16-bit |
| Maximum Speed | 70 MIPS |
| Flash Program Memory | 256KB (85.5K x 24) |
| RAM | 16KB |
| Supply Voltage | 3.3 V |
| Package | 100-TQFP (14x14 mm) |
| Mounting Type | Surface Mount |
| Motor Control PWM Channels | 12 |
| Input Capture / Output Compare | 8 / 8 |
| Quadrature Encoder Interfaces | 2 |
| Integrated Operational Amplifiers | 4 |
| Qualification | Automotive, AEC-Q100 |
| Packaging | Tray |
DSPIC33EP256GM310-H/PF 100-tqfp (14x14 mm) Pin Configuration Guide
Pin configuration for DSPIC33EP256GM310-H/PF (100-tqfp (14x14 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-H/PF.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33EP256GM310-H/PF is suitable for 6 applications: PMSM / FOC Motor Drives, Digital Power Supplies and Inverters, Automotive Body and Auxiliary Control Units, Industrial Motion Control and Robotics, Sensor Signal Conditioning and Data Acquisition, Appliance and HVAC Inverter Compressors.
PMSM / FOC Motor Drives
The DSPIC33EP256GM310-H/PF fits permanent-magnet synchronous motor field-oriented control because its 70 MIPS core executes Clarke/Park transforms and PI current loops with single-cycle MAC instructions, while 12 motor-control PWM channels drive three-phase inverters with complementary outputs and hardware dead-time. In a typical servo or traction-auxiliary drive, the four integrated op amps amplify low-side shunt currents before the ADC samples synchronized to the PWM center, minimizing switching-noise coupling. Placed as the single control IC between current sensors and the gate-driver stage, it removes external amplifier and filter components. The trade-off is that 256KB Flash must hold both the control stack and any communication protocol, which is ample for FOC plus CAN but should be budgeted for functional-safety diagnostics.
Recommended
Digital Power Supplies and Inverters
In digital power conversion - LLC, totem-pole PFC, and solar micro-inverters - the DSPIC33EP256GM310-H/PF is used because its 70 MIPS core sustains control-loop rates above 100 kHz and its high-speed PWM module supports complementary outputs, adjustable dead time, and ADC-trigger synchronization. The 12-bit ADC paired with the four on-chip op amps forms a compact sensing front end for output voltage and inductor current feedback, keeping analog signal paths on-die and short on the PCB. Designers typically allocate one PWM pair per phase leg and run voltage/current loops as nested PI compensators executed in interrupt context; the 16KB RAM accommodates multiple nested loops plus telemetry buffers. The AEC-Q100 -H grade extends this usage into automotive onboard chargers and DC-DC modules.
Recommended
Automotive Body and Auxiliary Control Units
Because the DSPIC33EP256GM310-H/PF carries Automotive AEC-Q100 qualification and the extended -H temperature grade, it suits automotive auxiliary ECUs such as pump controllers, HVAC blower drives, throttle or flap actuators, and 48V auxiliary inverters. In these units the 12 PWM channels drive brushless blower or pump motors, the two quadrature encoder interfaces accept position sensors, and the integrated op amps condition ratiometric Hall-effect current sensors. The 3.3V supply integrates cleanly with automotive low-voltage rails after a buck pre-regulator, and the 256KB Flash leaves headroom for diagnostics, UDS-style service routines, and OTA-style update bootloaders. Designers should verify transient immunity on supply and CAN lines per the vehicle OEM's EMC specifications during system-level testing.
Recommended
Industrial Motion Control and Robotics
For multi-axis industrial motion - conveyors, robotic joints, and CNC auxiliary axes - the DSPIC33EP256GM310-H/PF serves as the per-axis motor controller. Its two quadrature encoder interfaces read incremental encoders directly, the 8 input-capture channels timestamp sensor events with sub-microsecond resolution for commutation and speed calculation, and the 70 MIPS core runs cascaded position/velocity/current loops at kHz rates. UART, SPI, and I2C ports link the axis controller to a higher-level PLC or EtherCAT-style gateway, while the four op amps handle encoder-buffering or current feedback duties without extra ICs. A practical benefit is code portability: firmware written for smaller dsPIC33EP members such as the DSPIC33EP128MC204 scales to this 100-pin part when an axis needs more PWM outputs or peripherals.
Recommended
Sensor Signal Conditioning and Data Acquisition
The DSPIC33EP256GM310-H/PF works well as an intelligent data-acquisition front end in industrial instrumentation: the four integrated operational amplifiers provide programmable gain for bridge sensors, thermocouple amplification, or shunt monitoring, feeding the on-chip high-speed ADC. The 70 MIPS core applies digital filtering - IIR notch filters, FIR decimation, or RMS computation - in real time using hardware DSP multiply-accumulate instructions, offloading the host. 256KB Flash stores calibration tables and multiple sensor profiles, and 16KB RAM buffers waveform captures for upload over UART, SPI, or I2C. In noise-sensitive designs, keeping the amplifier-to-ADC path internal to the die substantially reduces trace pickup compared with a discrete op-amp-plus-ADC chain. Consider oversampling plus averaging to trade sample rate for effective resolution.
Recommended
Appliance and HVAC Inverter Compressors
Inverter-driven compressors in air conditioners, heat pumps, and refrigerators are a classic dsPIC33EP use case, and the DSPIC33EP256GM310-H/PF fits because its 12 PWM channels drive the compressor's IPM module with complementary, dead-time-controlled outputs, while sensorless back-EMF or single-shunt FOC algorithms run comfortably on the 70 MIPS core. The integrated op amps amplify the single shunt or phase currents, and the ADC sampling synchronized to PWM center points enables clean current reconstruction - a requirement for single-shunt sensorless control. 256KB Flash accommodates sensorless observers plus communication with the appliance main board over UART. For non-automotive appliance builds, the industrial-grade -I/PF sibling offers identical function at lower qualification cost; the -H grade is chosen for robustness in high-ambient compressor enclosures.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33EP256GM310-H/PF — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33EP256GM310-I/PF | DSPIC33EP256GM310-E/PF | DSPIC33EP512GM310-H/PF | DSPIC33EP128GM310-H/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 |
| Core / Speed | dsPIC33E, 70 MIPS | dsPIC33E, 70 MIPS | dsPIC33E, 70 MIPS | dsPIC33E, 70 MIPS | dsPIC33E, 70 MIPS |
| Flash Memory | 256KB (85.5K x 24) | 256KB | 256KB | 512KB | 128KB |
| RAM | 16KB | 16KB | 16KB | 16KB | 16KB |
| Motor Control PWM | 12 channels | 12 channels | 12 channels | 12 channels | 12 channels |
| Qualification | Automotive, AEC-Q100 | Automotive, AEC-Q100 | Automotive, AEC-Q100 | Automotive, AEC-Q100 | Automotive, AEC-Q100 |
| Temperature Grade | -H (extended automotive grade) | -I (industrial grade) | -E (extended grade, -40C to +125C) | -H (extended automotive grade) | -H (extended automotive grade) |
Key Differentiators
- Extended automotive temperature grade in the same footprint (vs DSPIC33EP256GM310-I/PF)
- Memory headroom for growth without redesign (vs DSPIC33EP128GM310-H/PF)
- Analog integration reduces BOM versus discrete front ends (vs DSPIC33FJ64MC510T-I/PF)
- Trade-off: newer dsPIC33CK family is not pin-compatible (vs DSPIC33CK512MP606T-I/PT)
Design Notes
Decouple every VDD/VSS pair of the 100-pin TQFP with 100nF ceramic capacitors placed within 2 mm of the pins, plus at least one 10uF bulk capacitor per supply domain. On a 14x14 mm QFP with 0.5 mm pitch, escape traces should fan out on the outer layer with vias to inner ground planes placed close to each pin to keep loop inductance low. Exposed corner marks indicate pin 1; verify orientation before reflow because TQFP 100 rework is labor-intensive. Estimated: this standard decoupling scheme follows Microchip dsPIC33EP family layout guidance.
Keep the analog sensing front end - shunt resistors, the four on-chip op amps, and the ADC inputs - on a quiet region of the PCB separated from the PWM gate-driver routing. Route current-sense traces as Kelvin connections to the shunt and use a dedicated analog ground island joined to digital ground at one point. Sample the ADC synchronized to PWM center (center-aligned trigger) to avoid switching-edge noise; this is the pattern used in Microchip's motor-control reference designs for the dsPIC33EP family. Estimated: sampling at PWM center typically avoids the dv/dt spikes occurring at PWM edges.
Do not mix up temperature-grade suffixes when second-sourcing: -I and -E grades are functionally identical dies but must not be substituted into designs whose validation assumed -H automotive range limits without re-verification. Also, configuration fuses (oscillator source, PLL settings, watchdog) programmed in the Flash configuration words must match the crystal/PLL design; a wrong PLL setting can request a core clock beyond the 70 MIPS limit, causing undefined behavior. Use Microchip MPLAB X and the family programming specification for programming voltage and ICSP pin assignments.
The device runs from a single 3.3V rail; derive it from automotive or industrial 12V/24V buses via a pre-regulator with transient suppression. Estimated: core plus I/O current is typically in the tens-of-mA range at 70 MIPS per Microchip family electrical characteristics, so a 300-500 mA LDO provides adequate margin including I/O loading on the 100 pins. Ensure brown-out/reset is enabled so the DSC does not mis-commutate a motor during supply dips.
Compliance Information
Distributor listings (DigiKey, Hotenda) identify the family as Automotive, AEC-Q100, dsPIC 33EP. RoHS/REACH/lead-free status for the -H/PF suffix was not explicitly stated in the retrieved data - verify via Microchip product page or certificate request.
