DSPIC33EP256GM706-I/PT - 70 MIPS 16-bit DSC 256KB Flash | Microchip
MPN: DSPIC33EP256GM706-I/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.35 | $4.35 |
| 10 | $3.95 | $39.50 |
| 100 | $3.65 | $365.00 |
| 500 | $3.42 | $1,710.00 |
| 1,000 | $3.26 | $3,260.00 |
DSPIC33EP256GM706-I/PT Overview
A digital signal controller combines the computational throughput of a digital signal processor with the peripheral integration and deterministic control flow of a microcontroller. Within the power management hierarchy, the dsPIC33E family sits above basic 8-bit MCUs and below application processors, providing a single-chip solution for closed-loop control systems that need multiply-accumulate (MAC) performance and fast interrupt latency.
Key features include the enhanced dsPIC33E CPU executing DSP instructions at 70 MIPS, rich motor-control peripherals (Mouser lists 12 motor-control channels, 8 input capture / 8 output compare channels, 4 QEI encoders, and integrated op amps), CAN and multiple UART/SPI/I2C serial interfaces, and low-power management modes for battery-sensitive designs.
The dsPIC33EP architecture pairs the 16-bit fixed-point core with an on-chip DSP engine, hardware division, and fast interrupt context switching, which shortens control-loop latency in field-oriented motor control and power-conversion algorithms. Flash program memory is 256KB, and the extended family offers software-selectable clock scaling up to 70 MIPS with PLL options.
Typical applications include brushless DC and PMSM motor drives, digital power supplies and solar inverters, and industrial automation nodes requiring CAN connectivity and deterministic sensor processing.
When designing with this device, budget decoupling capacitance on the 3.3V rail and follow Microchip layout guidance for the VDDCORE/VCAP pin; the internal regulator capacitor must not be omitted. Pricing as of 2026-09-24 starts near $3.26 at quantity from distributor data.
This page synthesizes distributor pricing, drop-in alternatives, pin-count/package guidance, and practical design notes not found in the manufacturer datasheet alone.
Drop-in alternatives for DSPIC33EP256GM706-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 DSPIC33EP256GM706-I/PT (same form factor and footprint) — differing in Package, RAM, Core, Core Architecture, Qualification.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33EP256GM706-E/PT
✅ Drop-In✓ In Stock
$6.2 / Unit
View Datasheet →DSPIC33EP128GM706-I/PT
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP256GM306T-I/MR
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View Datasheet →DSPIC33EP128GM306-E/PT
✅ Drop-In✓ In Stock
$6.15 / Unit
View Datasheet →DSPIC33EP16GS506-I/PT
✅ Drop-In✓ In Stock
$2.95 / Unit
View Datasheet →DSPIC33CK512MP606T-I/PT
✅ Drop-In✓ In Stock
$4.86 / Unit
View Datasheet →DSPIC33EP256GM706-I/PT Maximum Ratings & Electrical Characteristics
| Core | dsPIC33E 16-bit DSC core |
| Max Clock Frequency | 70 MIPS |
| Program Memory Size | 256 KB Flash |
| Data RAM Size | 16 KB |
| Supply Voltage Range | 3.0 V to 3.6 V |
| Nominal Supply Voltage | 3.3 V |
| Operating Temperature | -40C to +85C |
| Package | 64-TQFP (10x10 mm) |
| Mounting Type | Surface Mount |
| Pin Count | 64 |
| Motor Control Channels | 12 MC |
| Input Capture / Output Compare | 8 IC / 8 OC |
| Quadrature Encoder Interfaces | 4 QEI |
| Integrated Op Amps | Yes (2 OpAmp per Mouser listing) |
| CAN Interface | Yes (2 CAN per family listing) |
| Technology | CMOS |
DSPIC33EP256GM706-I/PT 64-tqfp (10x10 mm) Pin Configuration Guide
Pin configuration for DSPIC33EP256GM706-I/PT (64-tqfp (10x10 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 DSPIC33EP256GM706-I/PT.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33EP256GM706-I/PT is suitable for 6 applications: BLDC/PMSM Motor Drives, Digital Power Supplies and Inverters, Industrial Automation and CAN Networking, Renewable Energy Converters (Solar/MPPT), Automotive and E-Mobility Auxiliary Control, Embedded Sensing and Data Acquisition.
BLDC/PMSM Motor Drives
The DSPIC33EP256GM706-I/PT fits industrial motor drives because its 70 MIPS DSP core executes field-oriented control (FOC) loops at the 10-20 kHz rates demanded by BLDC and PMSM motors, while 12 motor-control PWM channels provide complementary or edge-aligned drive for three-phase inverters. The 4 QEI encoder interfaces and 8 input captures handle high-resolution position feedback directly, and the integrated op amps can condition shunt current sense signals, reducing external component count. In a typical design, the DSC sits between a gate driver and the position/current feedback path, updating duty cycles each PWM period with single-cycle MAC arithmetic. The quantified benefit is deterministic control-loop latency at 70 MIPS without floating-point hardware overhead.
Recommended
Digital Power Supplies and Inverters
The DSPIC33EP256GM706-I/PT suits digital power conversion because its fast 8/8 input capture and output compare resources plus motor-control PWM channels implement phase-shifted or interleaved converter topologies with precise dead-time control. The 70 MIPS core closes voltage- and current-mode feedback loops at high bandwidth, and the 12-bit ADC pipeline (per family architecture) samples sense signals synchronously with PWM events to reject switching noise. Combined with CAN for system telemetry, a single DSPIC33EP256GM706 can replace analog control circuits plus a separate communication MCU. Designers should budget the 3.0V to 3.6V supply and follow Microchip layout guidance for the VDDCORE/VCAP capacitor to maintain regulator stability in noisy power stages.
Recommended
Industrial Automation and CAN Networking
For industrial automation nodes, the DSPIC33EP256GM706-I/PT provides on-chip CAN interfaces alongside multiple UART, SPI, and I2C ports, letting one controller bridge a factory CAN bus to local sensors and actuators. The 256KB Flash accommodates protocol stacks, a bootloader, and application logic simultaneously, while the 70 MIPS core handles deterministic I/O scanning and DSP filtering of sensor data. The industrial -40C to +85C rating matches cabinet-mounted control equipment environments. Because CAN framing and CRC are handled in hardware, CPU load stays low even at full bus utilization, quantifiably freeing cycles for the control application; typical deployments include PLC I/O modules, sensor hubs, and drive-network gateways.
Recommended
Renewable Energy Converters (Solar/MPPT)
The DSPIC33EP256GM706-I/PT is used in solar MPPT converters and micro-inverters where its simultaneous PWM generation and synchronized ADC sampling implement maximum-power-point tracking with perturb-and-observe or incremental conductance algorithms at kilohertz update rates. The 70 MIPS DSP engine executes the tracking math and protection limits (over-voltage, over-current) with headroom, and 256KB Flash holds grid-code tables and data logging. Its 4 QEI and op amp resources additionally support hybrid wind-hydro systems with encoder-based speed feedback. Designers typically clock the device from a crystal with PLL to reach full 70 MIPS while keeping the 3.3V rail clean for ADC accuracy, achieving sub-percent MPPT tracking efficiency in published reference designs.
Recommended
Automotive and E-Mobility Auxiliary Control
For auxiliary automotive electronics such as pump, fan, and actuator controllers, the extended-temperature sibling DSPIC33EP256GM706-E/PT carries AEC-Q100 qualification per datasheets.com data, in the same 64-pin TQFP footprint as the industrial -I/PT grade. This lets suppliers develop one control board and qualify it for under-hood-adjacent environments by populating the E-grade device. The 12 motor-control PWM channels drive brushless pumps and cooling fans with FOC efficiency, while CAN interfaces connect to vehicle networks. Using the same die across industrial and automotive grades reduces firmware divergence to zero, a measurable benefit: one code base, one pinout, two qualification levels, shortening platform development cycles substantially.
Recommended
Embedded Sensing and Data Acquisition
The DSPIC33EP256GM706-I/PT serves high-channel-count acquisition front ends because its analog-capable pins, integrated op amps, and 8 input capture channels multiplex multiple sensor sources into synchronized sampling under one 70 MIPS controller. The 16-bit fixed-point DSP instructions implement IIR/FIR filtering and FFT-based condition monitoring (for example vibration RMS in predictive maintenance) in real time, while 256KB Flash stores calibration tables and 16KB RAM buffers sample streams for CAN or UART upload. The -40C to +85C industrial rating suits unconditioned field installations. Quantified benefit: deterministic, interrupt-driven sampling with hardware-timed capture eliminates software timing jitter that plagues RTOS-based MCU solutions in this class.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33EP256GM706-I/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33EP256GM706-E/PT | DSPIC33EP128GM706-I/PT | DSPIC33EP256GM306T-I/MR | DSPIC33CK512MP606T-I/PT |
|---|---|---|---|---|---|
| Package | 64-TQFP (10x10 mm) | 64-TQFP (10x10 mm) - same | 64-TQFP (10x10 mm) - same | 64-TQFP - same footprint | 64-TQFP - same footprint |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core Performance | 70 MIPS dsPIC33E 16-bit DSC | 70 MIPS dsPIC33E (same die) | 70 MIPS dsPIC33E | 70 MIPS dsPIC33E | 100 MIPS dsPIC33CK |
| Program Flash | 256 KB | 256 KB | 128 KB | 256 KB | 512 KB |
| Peripheral Set (QEI / OpAmp) | 4 QEI / 2 OpAmp (per Mouser) | Identical (same die) | Identical (same family) | Reduced (GM30x set) | Different (CK peripheral set) |
| 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 |
| Firmware Compatibility | Reference (dsPIC33EP GM70x) | 100% - zero-change drop-in | High - same family, smaller Flash | Medium - GM30x peripheral limits | Low - CK core register map differs |
Key Differentiators
- Only GM70x die in this footprint carries 4 QEI + integrated op amps (vs DSPIC33EP256GM306T-I/MR)
- Same die with AEC-Q100 qualification available (vs DSPIC33EP256GM706-E/PT)
- Mature EP-family ecosystem vs newer CK core (vs DSPIC33CK512MP606T-I/PT)
Design Notes
Estimated: For a 3.3V rail at typical active-mode current in the tens-of-mA range (exact value in the datasheet DC Characteristics table), a 10uF bulk ceramic plus 0.1uF per VDD pin decoupling network keeps supply ripple within ADC accuracy limits. The internal core regulator requires the specified VDDCORE/VCAP capacitor (typically a low-ESR ceramic, value per datasheet) - omitting or substituting it causes brown-out resets and is the single most common bring-up failure on dsPIC33EP designs. Verify the exact capacitor value against the latest Microchip datasheet revision, not legacy app notes.
Route motor-control PWM outputs away from analog inputs feeding the ADC; on the 64-pin TQFP, analog channels and PWM pins are interleaved, so allocate a quiet analog island near the VREF+/VREF- pins and use a ground pour under the ADC traces. Place the crystal and its load capacitors within a few millimeters of OSC1/OSC2 with a guard ground ring. For 70 MIPS operation, keep the PLL loop filter layout per the Oscillator section of the family datasheet to avoid jitter on ADC sample timing.
Peripheral pin select (PPS) must be configured in the correct unlock sequence before UART/SPI functions appear on physical pins; forgetting the unlock sequence is a frequent firmware failure. Also remember that I/O pins are 3.3V only - 5V-tolerant claims do not apply to this family, so level-shift any 5V legacy signals. When migrating code from the GM706 -I/PT to the -E/PT grade, no source changes are required, but when migrating to dsPIC33CK parts, register maps and configuration words differ substantially and require re-verification.
Estimated: A 64-pin TQFP dissipating on the order of 0.2-0.4W (typical active operation) with theta_JA near 50-60 C/W on a standard 4-layer board rises only 10-25C above ambient, comfortably inside the -40C to +85C rating; exact theta_JA is in the datasheet Thermal Characteristics table. For extended-temperature (E/PT) automotive deployments near the upper limit, verify worst-case current draw with all peripherals active and ensure airflow or copper pour under the package. Derate above 85C is not permitted on the -I grade.
Compliance Information
The -I/PT grade is the industrial (not automotive) variant; the AEC-Q100 qualified option in this family is the DSPIC33EP256GM706-E/PT per datasheets.com data. RoHS/REACH declarations should be confirmed on Microchip's product page for this exact MPN before production release.
