DSPIC33EP256GM706-H/PT - 16-bit 70 MIPS 256KB DSC | Microchip
MPN: DSPIC33EP256GM706-H/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $5.9 | $5.90 |
| 10 | $5.4 | $54.00 |
| 100 | $4.85 | $485.00 |
| 500 | $4.4 | $2,200.00 |
| 1,000 | $3.95 | $3,950.00 |
DSPIC33EP256GM706-H/PT Overview
A digital signal controller combines the compute architecture of a microcontroller with the math acceleration of a DSP. The dsPIC33E family uses a Harvard architecture with a 16-bit data path and 24-bit instruction words, positioning it above general-purpose MCUs in the power-management and embedded-control hierarchy for precision motor control and digital power conversion.
Key features include the 70 MIPS dsPIC DSC core with integrated DSP engine, 256KB self-programmable Flash, 16KB RAM, 4 DMA channels, 5 external interrupts, and low-power operating modes. The -H/PT ordering code indicates the extended-temperature build in a 64-pin TQFP tray-packaged option.
The device operates from a 3.0V to 3.6V supply with a nominal 3.3V rail, in CMOS technology. Its peripheral set for the GM70x family includes motor-control PWM, input capture/output compare, quadrature encoder interface, and op-amp/comparator resources cited by distributors, enabling closed-loop field-oriented motor control and digital power loops without external analog front-ends.
Typical applications include precision motor control (BLDC, PMSM, FOC), digital power supplies (PFC, LLC), industrial automation nodes, and automotive-adjacent control units, where deterministic interrupt latency and hardware DSP multiply-accumulate throughput matter.
Design consideration: budget the 3.0V to 3.6V supply window carefully and use Microchip's documented decoupling and VDD/VSS layout guidance; Flash endurance and ERP programming restrictions apply to self-write routines.
This page synthesizes distributor listings, cross-reference findings, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for DSPIC33EP256GM706-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 DSPIC33EP256GM706-H/PT (same form factor and footprint) — differing in Operating Temperature, Package, Core Architecture, Supply Voltage Range, Flash Program Memory.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33EP256GM706-I/PT
✅ Drop-In✓ In Stock
$3.26 / Unit
View Datasheet →DSPIC33EP256GM706-I/PF
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33EP256GM706-E/PT
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$6.2 / Unit
View Datasheet →DSPIC33EP512GM706-I/PT
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
Contact for price
View Datasheet →DSPIC33EP256GM706-H/PT Maximum Ratings & Electrical Characteristics
| Core Architecture | 16-bit dsPIC33E Harvard, DSP engine |
| Maximum CPU Speed | 70 MIPS |
| Flash Program Memory | 256 KB (85.5K x 24) |
| Data RAM | 16 KB |
| Supply Voltage Range | 3.0 V to 3.6 V |
| Nominal Supply Voltage | 3.3 V |
| DMA Channels | 4 |
| External Interrupts | 5 |
| Package | 64-pin TQFP |
| Mounting Type | Surface Mount |
| Packaging | Tray |
| Qualification | Automotive grade family (AEC-Q100 family per distributor listings) |
| Technology | CMOS |
| Low-Power Modes | Yes |
| Clock Frequency | 60 MHz (per distributor listing) |
DSPIC33EP256GM706-H/PT 64-pin tqfp Pin Configuration Guide
Pin configuration for DSPIC33EP256GM706-H/PT (64-pin tqfp 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-H/PT.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33EP256GM706-H/PT is suitable for 6 applications: Precision Motor Control (FOC/PMSM), Digital Power Supplies (PFC/LLC), Industrial Automation Nodes, Automotive-Adjacent Control Units, Sensor Signal Processing, Embedded Control & Connectivity Gateways.
Precision Motor Control (FOC/PMSM)
The DSPIC33EP256GM706-H/PT fits closed-loop PMSM and BLDC drives because its 70 MIPS core and hardware DSP engine deliver the multiply-accumulate throughput field-oriented control demands at 16-20 kHz PWM frequencies. Distributor data for the GM70x family cites motor-control PWM, input capture/output compare, quadrature encoder interface, and on-chip op-amps, allowing current-sense amplification, encoder decoding, and complementary PWM generation without external analog chips. In a typical topology, the MCU generates center-aligned PWM to a three-phase inverter, samples phase currents synchronously with PWM via ADC triggers, and closes the FOC loop in software ISR. The quantified benefit is a deterministic single-cycle MAC and 5 external interrupts that keep loop latency low and jitter minimal.
Recommended
Digital Power Supplies (PFC/LLC)
Digital power conversion benefits from this DSC's 70 MIPS execution, 3.0V to 3.6V rail compatibility with controller supplies, and DMA channels that move ADC results to RAM without CPU intervention. In a PFC or LLC stage, the part computes voltage/current compensation loops at PWM frequency, adjusts phase and duty in hardware, and uses its IC/OC peripherals for synchronized multi-phase operation. Compared with an analog controller, it adds programmability for soft-start, burst mode, and protection sequencing, with the trade-off of firmware qualification effort. The 16-bit fixed-point DSP with single-cycle MAC keeps the loop code compact within the 256KB (85.5K x 24) Flash, leaving ample room for communication and diagnostic stacks.
Recommended
Industrial Automation Nodes
Factory automation nodes use the DSPIC33EP256GM706-H/PT where deterministic interrupt response and robust peripheral timing matter. With 5 external interrupts, 4 DMA channels, and configurable peripheral pin select, a single chip can service encoder feedback, RS-485 or CAN style fieldbus framing, and sensor acquisition concurrently. The 64-pin TQFP exposes enough I/O for relay, indicator, and safety-interlock control, while the 3.3V nominal rail simplifies interfacing with industrial logic. Its extended-temperature -H build tolerates cabinet environments where standard industrial grades are marginal, and the 256KB Flash holds protocol stacks plus OTA-style field updates. The measurable advantage is lower BOM count and tighter cycle-time jitter than a generic MCU plus external glue logic.
Recommended
Automotive-Adjacent Control Units
Distributor listings categorize the DSPIC33EP256GM706 family under automotive-grade AEC-Q100 lineage, and the -E temperature variant of the same die serves qualifying programs. The -H/PT build is used in auxiliary electronic control units such as pump controllers, actuator drivers, and thermal-management boards where full ASIL compliance is not required but robust temperature behavior is. The 70 MIPS DSC runs sensor fusion for position sensing with the QEI peripheral, drives motors with hardware fault PWM shutdown, and logs diagnostics into the 16KB RAM. Designers should map their qualification plan to the correct suffix (-E for automotive flows, -H for extended industrial) while reusing one PCB footprint across grades.
Recommended
Sensor Signal Processing
Mixed-signal sensor front-ends leverage the DSP engine for filtering and feature extraction close to the transducer. The GM70x peripheral set includes on-chip op-amps and comparators (cited in Mouser's family data: '8/8 IC/OC, 2 QEI, 4 OpAmp' style resources), letting the part amplify and threshold raw sensor signals before digitization. A 70 MIPS core executes FIR/IIR compensation and burst averaging in real time, with DMA streaming results off-chip. Applications include load-cell conditioning, ultrasonic flow timing, and vibration monitoring. The benefit is an all-in-one signal chain at 3.3V with reduced board area; the design consideration is verifying op-amp bandwidth against your sensor's frequency content in the datasheet electrical tables.
Recommended
Embedded Control & Connectivity Gateways
The 256KB Flash and 16KB RAM of the DSPIC33EP256GM706-H/PT accommodate protocol stacks for UART, SPI, and I2C bridging in gateway sub-boards, while the DSP core offloads data formatting tasks. Peripheral pin select lets firmware route communication controllers to the optimal 64-TQFP pins for the PCB, reducing layout constraints in dense boards. DMA channels sustain background data movement between serial peripherals and RAM, so the 70 MIPS CPU remains available for packet processing and CRC checks. Compared with moving to a 32-bit MCU, the 16-bit DSC preserves deterministic interrupt latency and Microchip MPLAB X toolchain continuity, at the cost of smaller addressable RAM - acceptable for protocol conversion rather than heavy buffering workloads.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33EP256GM706-H/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33EP256GM706-I/PT | DSPIC33EP256GM706-I/PF | DSPIC33EP256GM706-E/PT | DSPIC33EP512GM706-I/PT |
|---|---|---|---|---|---|
| Package | 64-pin TQFP | 64-pin TQFP - same | 64-pin TQFP - same | 64-pin TQFP - same | 64-pin TQFP - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 256 KB (85.5K x 24) | 256 KB | 256 KB | 256 KB | 512 KB |
| Data RAM | 16 KB | 16 KB | 16 KB | 16 KB | 16 KB |
| CPU Speed | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS |
| 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 |
| Temperature Grade | Extended (-H suffix) | Industrial (-I) | Industrial (-I) | Extended/Automotive (-E) | Industrial (-I) |
| DMA Channels / Ext Interrupts | 4 / 5 | 4 / 5 | 4 / 5 | 4 / 5 | 4 / 5 |
Key Differentiators
- Extended temperature availability on a proven single-core DSC (vs DSPIC33EP256GM706-I/PT)
- Single-core simplicity vs dsPIC33CH dual-core (vs DSPIC33CH256MP506-E/PT)
- Cost-optimized 256KB memory point (vs DSPIC33EP512GM706-I/PT)
Design Notes
Design the 3.3V rail to stay within the 3.0V to 3.6V window under all load transients; core current at 70 MIPS is the worst case per Microchip's dsPIC33EP power estimation methodology. Place a 10uF bulk capacitor plus 0.1uF ceramic at each VDD/VSS pin pair, and follow the datasheet's decoupling diagram. If the rail is derived from a buck converter, verify ripple at the full load step, since PLL-based clocking is sensitive to supply sag during Flash write operations.
For motor-control layouts, keep the inverter switching node traces away from the ADC input pins and route current-sense signals differentially into the on-chip op-amp inputs. Use a solid ground plane under the TQFP and connect all VSS pins. When using the QEI peripheral, treat encoder inputs as noisy edges: add series resistance and RC filtering per Microchip's motor-control reference designs, and trigger ADC sampling from the PWM peripheral so current sampling lands at the PWM center for noise-minimal readings.
When choosing between temperature suffixes (-I, -H, -E), verify the suffix against the official Microchip ordering-code table before release; distributor aggregator pages occasionally mislabel the package (some list /PT as 64-VQFN, others as 64-TQFP - the Microchip suffix table is the authority). Also note that third-party comparisons may conflate the dsPIC33EP single-core part with dsPIC33CH dual-core parts; they are not firmware-compatible. Finally, budget Flash for self-write routines respecting endurance limits in the datasheet.
Compliance Information
Distributor listings categorize the dsPIC33EP256GM706 family under Automotive/AEC-Q100 lineage; the specific -H/PT build's formal qualification level should be confirmed via the official Microchip product page and product-change notifications. RoHS/REACH status not stated in provided data.
