dsPIC33EP256MU814T-I/PH - 256KB Flash 60MHz DSC 144-TQFP | Microchip
MPN: DSPIC33EP256MU814T-I/PH ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $9.57 | $9.57 |
| 10 | $9.15 | $91.50 |
| 100 | $8.72 | $872.00 |
| 500 | $8.3 | $4,150.00 |
| 1,000 | $7.89 | $7,890.00 |
DSPIC33EP256MU814T-I/PH Overview
A digital signal controller combines the compute power of a DSP with the peripheral integration and control-oriented architecture of a microcontroller. Within the power-management hierarchy, a DSC is a superset of a general-purpose 16-bit MCU: it adds single-cycle MAC, barrel shifter, and hardware division suited to control-loop mathematics, placing dsPIC33 devices between classic MCUs and full DSPs in embedded system design.
Key features include up to 70 MIPS core performance (60 MHz clock), dual CAN modules, integrated full-speed USB, high-speed PWM peripherals for motor control, and 51 I/O ports across multiple ports. The MU subfamily is specifically positioned for motor control and digital power applications, with 27 general purpose timers available on larger family members.
Architecturally, the dsPIC33E core pairs a 16-bit modified Harvard pipeline with DSP engine enhancements, supporting deterministic real-time execution of FOC (field-oriented control) and other math-intensive algorithms. Flash program memory of 256 KB (85.5K x 24 words) provides ample space for complex control firmware and communication stacks.
Typical applications include dual motor control systems (BLDC, PMSM, ACIM), industrial automation nodes, and USB-connected sensing instruments that benefit from dual CAN and USB connectivity in one die.
When designing with this part, respect the 3V to 3.6V supply window and plan decoupling for the multiple VDD/VSS pairs of the 144-TQFP; the industrial temperature grade covers -40C to +85C, so verify thermal margin if the 60 MHz core runs at sustained high load.
This page synthesizes distributor pricing, drop-in family alternatives, and practical design notes not consolidated in the manufacturer datasheet.
Drop-in alternatives for DSPIC33EP256MU814T-I/PH — 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 DSPIC33EP256MU814T-I/PH (same form factor and footprint) — differing in Package.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33EP256MU814T-E/PH
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33EP512MU814
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP128MU814
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP256MU814-I/PH
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$11.75 / Unit
View Datasheet →DSPIC33EP256MU814T-I/PH Maximum Ratings & Electrical Characteristics
| Core Architecture | 16-bit dsPIC33E DSC |
| CPU Speed | 60 MHz |
| Core Performance | up to 70 MIPS (family) |
| Program Memory (Flash) | 256 KB (85.5K x 24) |
| SRAM | 28 KB |
| Supply Voltage | 3 V to 3.6 V |
| I/O Ports | 51 |
| Package | 144-TQFP (16x16 mm) |
| Mounting Type | Surface Mount |
| Operating Temperature | -40C to +85C (I grade) |
| Packaging | Tape & Reel (T suffix) |
| Communication Interfaces | USB, 2x CAN (MU814 family) |
| Peripherals | High-Speed PWM, Advanced Analog |
| RoHS Status | Compliant |
| Life Cycle Stage | ACTIVE |
| Product Family | dsPIC33EP256MU814 (up to 512 KB Flash and 52 KB SRAM family) |
DSPIC33EP256MU814T-I/PH 144-tqfp (16x16 mm) Pin Configuration Guide
Pin configuration for DSPIC33EP256MU814T-I/PH (144-tqfp (16x16 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 DSPIC33EP256MU814T-I/PH.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33EP256MU814T-I/PH is suitable for 6 applications: Dual Motor Control (BLDC/PMSM/ACIM), Industrial CAN Networking Node, USB-Connected Test and Measurement Instrument, Digital Power Conversion (PFC/Inverters), Automotive-Adjacent Body and Auxiliary Control, IoT Sensing and Signal Processing Edge Node.
Dual Motor Control (BLDC/PMSM/ACIM)
The dsPIC33EP256MU814T-I/PH is purpose-built for precision motor control: its 60 MHz 16-bit dsPIC33E core with DSP engine executes field-oriented control loops deterministically, while the high-speed PWM peripheral can drive two independent motors from one die. Microchip positions this exact family for high-performance, precision motor control systems. In a typical dual-axis servo, the PWM outputs feed gate drivers such as the MCP14A0151, current shunts feed the on-chip analog inputs, and the 256 KB flash holds FOC firmware, commutation tables, and fault handling. The result is a compact, single-DSC drive with deterministic loop timing.
Recommended
Industrial CAN Networking Node
With two independent CAN2.0 modules, the MU814 serves as an industrial gateway or drive node bridging two CAN buses while simultaneously running control firmware on the 60 MHz core. This dual-CAN integration, confirmed by Mouser's listing (16-bit DSC, USB, 2xCAN), removes an external CAN controller from the BOM. In practice the DSC sits between a machine-level CANopen bus and a device-level bus, terminating messages with hardware filters to minimize CPU load. The 51 I/O give headroom for limit switches, encoders, and status lines, while the industrial -40C to +85C grade suits factory-floor enclosures.
Recommended
USB-Connected Test and Measurement Instrument
The integrated full-speed USB module lets this DSC stream measurement data directly to a PC host without a separate USB interface chip. Combined with the on-chip advanced analog peripherals and the DSP engine for real-time filtering (FIR/IIR), the MU814 can implement a compact data-acquisition front end: sensor inputs are sampled, digitally filtered on-chip, and packetized over USB. The 28 KB SRAM buffers bursts during host stalls. Distributor listings from DigiKey and Hotenda confirm the USB and analog integration that underpins this class of instrument design.
Recommended
Digital Power Conversion (PFC/Inverters)
High-speed PWM with fine edge control and fast on-chip analog comparators make the MU814 suitable for digital power supplies, PFC stages, and solar micro-inverters. The 60 MHz core closes current loops at switching frequency, while the 256 KB flash accommodates soft-start, protection, and communication firmware in one image. Because the dsPIC33E motor-control family was designed for deterministic math (single-cycle MAC, barrel shifter), control laws execute with low jitter, which directly improves THD and transient response in switch-mode power stages operating at 3.0V-3.6V logic levels.
Recommended
Automotive-Adjacent Body and Auxiliary Control
Distributor data notes the dsPIC33EP256MU814 architecture is commonly used in automotive, industrial, and consumer applications requiring high-performance signal processing and control. In non-safety, 12V auxiliary systems (pump control, actuator modules, sensor hubs), the dual CAN buses integrate with vehicle networks while high-speed PWM drives motors. Designers targeting genuine automotive qualification must verify the exact AEC-Q100 status of the chosen grade with Microchip, and should consider the extended-temperature E/PH sibling for under-hood ambient conditions within the 3V-3.6V regulated rail.
Recommended
IoT Sensing and Signal Processing Edge Node
For smart-sensor nodes, the MU814 pairs DSP-class math (for FFT-based vibration or power-quality analysis) with enough connectivity (USB, dual CAN, multiple UART/SPI/I2C) to feed edge gateways. The 256 KB flash stores both the signal-processing pipeline and the protocol stack, while the industrial temperature range and RoHS-compliant 144-TQFP suit DIN-rail and panel-mounted hardware. Its 51 I/O accommodate multiple sensor channels without port expanders, keeping BOM cost low; JLCPCB and LCSC listings confirm the ROHS-compliant, -40C to +85C operating envelope for such deployments.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33EP256MU814T-I/PH — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33EP256MU814T-E/PH | DSPIC33EP512MU814 | DSPIC33EP128MU814 |
|---|---|---|---|---|
| Package | 144-TQFP (16x16 mm) | 144-TQFP (16x16 mm) - same | 144-TQFP (16x16 mm) - same | 144-TQFP (16x16 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Program Memory | 256 KB | 256 KB | 512 KB | 128 KB |
| Core Speed | 60 MHz | 60 MHz | 60 MHz | 60 MHz |
| Operating Temperature | -40C to +85C (I grade) | -40C to +125C (E grade) | -40C to +85C (I grade typical) | -40C to +85C (I grade typical) |
| USB / CAN | USB + 2x CAN | USB + 2x CAN | USB + 2x CAN | USB + 2x CAN |
Key Differentiators
- Dual CAN plus USB in a single DSC (vs DSPIC33EP128MU814)
- Industrial temperature at lowest equivalent cost (vs DSPIC33EP256MU814T-E/PH)
- Flash headroom trade-off vs 512 KB variant (vs DSPIC33EP512MU814)
Design Notes
The permitted supply window is narrow (3.0V to 3.6V). Use a low-noise 3.3V regulator with under 100 mV of transient excursion; brown-out during 60 MHz core activity causes spurious resets. Decouple every VDD/VSS pair on the 144-TQFP with a 0.1 uF ceramic placed within 2 mm of the pin, plus one bulk 10 uF near the package. Estimated: at 60 MHz with moderate I/O loading, core current is on the order of tens of mA per Microchip typical figures, but confirm with the datasheet current-vs-frequency graphs for your exact configuration.
Route high-speed PWM traces away from the USB differential pair and CAN lines; the motor-control PWM edges are the dominant on-board noise source. Keep the 144-TQFP's crystal/oscillator traces short and guard them with ground. Because the part has 51 I/O, group by function (PWM bank, analog bank, comms bank) during schematic capture to minimize crosstalk on the dense 16x16 mm fanout. A solid ground plane under the die area is strongly recommended given the switching activity of the high-speed PWM module.
Verify the temperature suffix before release: the -I grade tops out at +85C ambient, which is easy to exceed in sealed motor-drive enclosures; if in doubt, specify the pin-compatible -E grade (-40C to +125C). Also remember the T suffix denotes tape and reel only - buying the non-T part yields tubes/trays that may not suit your pick-and-place feeders. Finally, confirm any substitute MPN against the Microchip datasheet pin diagram; family members sharing a core do NOT always share pinouts (e.g., MU810 is 100-pin).
Compliance Information
JLCPCB listing explicitly marks dsPIC33EP256MU814T-I/PH as ROHS. REACH, halogen-free, and conflict-minerals declarations not stated in provided data - request certificates from Microchip.
