DSPIC33EP256MU814-E/PL - 16-bit 60MIPS DSC 256KB Flash | Microchip
MPN: DSPIC33EP256MU814-E/PL ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $10.79 | $10.79 |
| 10 | $10.2 | $102.00 |
| 100 | $9.6 | $960.00 |
| 500 | $9.1 | $4,550.00 |
| 1,000 | $8.7 | $8,700.00 |
DSPIC33EP256MU814-E/PL Overview
A digital signal controller combines the computational architecture of a microcontroller with the math-acceleration hardware of a DSP. In the power management IC hierarchy of embedded systems, the dsPIC33EP family sits in the 16-bit microcontroller and DSC class, targeting real-time control loops where both C-code flexibility and multiply-accumulate throughput are required. The dsPIC33EP core uses an enhanced pipeline with DSP engine support for fractional and integer MAC operations.
Key features of this MU814 variant include integrated full-speed USB 2.0 device/Host/OTG capability, two CAN 2.0B modules, and a 15-channel Direct Memory Access (DMA) controller that offloads data movement from the CPU core. The high-speed PWM peripherals with dedicated time base make it part of Microchip's motor-control-oriented dsPIC33EP MU subfamily.
Technical depth: the device operates from a 3.3V supply at up to 60 MHz system frequency, executing one instruction per cycle for 60 MIPS throughput. The Flash is organized as 85.5K x 24-bit instruction words, and the 15 DMA channels can service ADC results, UART, SPI, and USB endpoints autonomously, critical for deterministic control loops in motor drives and digital power converters.
Typical applications include precision motor control (BLDC, PMSM, FOC), digital power supplies and solar inverters, USB-connected industrial instruments, and automotive AEC-Q100 systems where the -E extended temperature grade and CAN modules are required.
Design consideration: at 60 MIPS the device requires a clean 3.3V rail with decoupling capacitors placed at all VDD/VSS pin pairs of the 144-LQFP; also budget code space carefully since 256KB Flash cannot be expanded externally on the Enhanced Parallel Master Port without added complexity.
This page synthesizes distributor pricing, drop-in family alternatives, datasheet pointers, and practical design notes not consolidated in the manufacturer datasheet.
Drop-in alternatives for DSPIC33EP256MU814-E/PL — 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 DSPIC33EP256MU814-E/PL (same form factor and footprint) — differing in Package, USB.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33EP512MU814-E/PL
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$12.48 / Unit
View Datasheet →DSPIC33EP256MU814-H/PL
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP128MU814-E/PL
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP256MU814-E/PL Maximum Ratings & Electrical Characteristics
| Core Architecture | 16-bit dsPIC33EP DSC |
| Max CPU Speed | 60 MIPS |
| Program Memory (Flash) | 256KB (85.5K x 24) |
| RAM | 28KB |
| Supply Voltage | 3.3 V |
| DMA Channels | 15 |
| CAN Modules | 2 x CAN 2.0B |
| USB | USB 2.0 Device/Host/OTG, full-speed |
| Operating Temperature | -40C to +125C (E grade) |
| Package | 144-LQFP (20x20 mm) |
| Mounting Type | Surface Mount |
| Qualification | AEC-Q100 qualified, automotive applicable |
| Applications | Automotive, Motor Control, Industrial |
| Pin Count | 144 |
| RoHS Status | Compliant |
DSPIC33EP256MU814-E/PL 144-lqfp (20x20 mm) Pin Configuration Guide
Pin configuration for DSPIC33EP256MU814-E/PL (144-lqfp (20x20 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 DSPIC33EP256MU814-E/PL.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33EP256MU814-E/PL is suitable for 6 applications: Precision Motor Control (FOC/BLDC/PMSM), Digital Power Supplies and Solar Inverters, Automotive Body and Powertrain Auxiliary Systems, USB-Connected Industrial Instruments, Industrial Automation and PLC-Style I/O, Embedded Audio and Signal Processing Nodes.
Precision Motor Control (FOC/BLDC/PMSM)
The DSPIC33EP256MU814-E/PL is purpose-built for precision motor control as part of Microchip's dsPIC33E motor-control family. Its 60 MIPS 16-bit DSP core executes field-oriented control (FOC) algorithms with single-cycle MAC operations, while high-speed PWM peripherals generate complementary dead-band-controlled drive signals for three-phase inverters. The 15-channel DMA controller streams ADC current-sense samples into RAM without CPU intervention, keeping loop jitter deterministic. With 2x CAN 2.0B modules and AEC-Q100 -40C to +125C qualification, it also connects directly to automotive and industrial control networks. A typical FOC loop at 10-20 kHz PWM frequency leaves ample CPU headroom for protocol stacks and supervision tasks on this controller.
Recommended
Digital Power Supplies and Solar Inverters
In digital power conversion - LLC resonant converters, totem-pole PFC stages, and grid-tied solar inverters - the DSPIC33EP256MU814-E/PL provides the deterministic control fabric needed for high-frequency switching. The 60 MIPS core closes current and voltage loops at tens of kHz with DSP-engine multiply-accumulate throughput, and the high-speed PWM module supports phase-shifted and complementary topologies with fine duty-cycle resolution. The 15-channel DMA moves ADC conversion results autonomously, so software overhead stays flat as channel count grows. The 256KB Flash accommodates multiple control-law variants, compensation tables, and communication firmware (USB, CAN) in a single image without external memory.
Recommended
Automotive Body and Powertrain Auxiliary Systems
With AEC-Q100 qualification and the -E extended temperature grade of -40C to +125C, the DSPIC33EP256MU814-E/PL is suited to automotive auxiliary electronic control units such as pump controllers, actuator drivers, thermal-management modules, and BLDC fan drives. The dual CAN 2.0B modules allow simultaneous connection to powertrain and body networks or gateway bridging between two bus segments. The 60 MIPS core with DSP instructions runs sensor-fusion and diagnostic algorithms, while the 256KB Flash supports OTA-style field update schemes with dual image storage. Designers should derate pin current at +125C and follow Microchip's automotive hardware design guidelines for ESD and ISO 7637 transient robustness.
Recommended
USB-Connected Industrial Instruments
The integrated full-speed USB 2.0 Device/Host/OTG module of the DSPIC33EP256MU814-E/PL makes it a strong fit for bench instruments, data loggers, and industrial sensors that stream data to a PC. At 12 Mbps, USB delivers adequate bandwidth for waveform and telemetry transfer, while the 15-channel DMA keeps endpoint servicing off the CPU so 60 MIPS of control and signal-processing throughput remain available. The 28KB RAM buffers acquisition bursts, and 256KB Flash stores multiple instrument personalities or calibration tables. Combined with its 144-pin LQFP I/O budget, one controller can handle acquisition, display driving, and USB communication in a single-chip instrument architecture.
Recommended
Industrial Automation and PLC-Style I/O
For industrial automation nodes - remote I/O, conveyor drives, and machine controllers - the DSPIC33EP256MU814-E/PL offers the peripheral richness of a 144-pin package: multiple UART, SPI, and I2C ports for sensor and HMI connectivity, dual CAN 2.0B for fieldbus integration, and abundant 5V-tolerant-style I/O budget for discrete inputs and relay outputs. The 60 MIPS core executes PID loops, protocol stacks, and diagnostic logic concurrently, while DMA offloads high-rate data paths. The extended -40C to +125C operating range of the -E grade covers enclosed control cabinets with poor thermal margins, and RoHS-compliant lead-free construction meets industrial environmental directives.
Recommended
Embedded Audio and Signal Processing Nodes
The DSP engine of the DSPIC33EP256MU814-E/PL, with its single-cycle MAC, barrel shifter, and modulo addressing, enables cost-effective embedded audio processing: active crossover filters, DSP-based equalization, tone generation, and acoustic alarm synthesis. The 60 MIPS throughput supports several cascaded biquad IIR filters at 48 kHz sample rates with headroom, and the DMA controller streams I2S-style data via SPI-based audio codecs with minimal CPU load. The 28KB RAM provides delay lines and coefficient storage, while the 256KB Flash retains multiple filter presets. For USB audio class devices, the integrated USB OTG module handles enumeration and isochronous endpoints natively, avoiding an external USB interface chip.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33EP256MU814-E/PL — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33EP512MU814-E/PL | DSPIC33EP256MU814-H/PL | DSPIC33EP128MU814-E/PL |
|---|---|---|---|---|
| Package | 144-LQFP (20x20 mm) | 144-LQFP (20x20 mm) - same | 144-LQFP (20x20 mm) - same | 144-LQFP (20x20 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| CPU Performance | 60 MIPS, 16-bit | 60 MIPS, 16-bit | 60 MIPS, 16-bit | 60 MIPS, 16-bit |
| Flash Memory | 256KB (85.5K x 24) | 512KB (170K x 24) | 256KB (85.5K x 24) | 128KB (42.75K x 24) |
| RAM | 28KB | 52KB | 28KB | 16KB |
| Operating Temperature | -40C to +125C (E grade) | -40C to +125C (E grade) | -40C to +85C (H grade) | -40C to +125C (E grade) |
| USB / CAN | USB OTG + 2x CAN 2.0B | USB OTG + 2x CAN 2.0B | USB OTG + 2x CAN 2.0B | USB OTG + 2x CAN 2.0B |
| DMA Channels | 15 | 15 | 15 | 15 |
Key Differentiators
- Integrated full-speed USB OTG (vs DSPIC33EP256MC504-I/PT)
- Automotive -E extended temperature grade (vs DSPIC33EP256MU814-H/PL)
- Balanced 256KB Flash / 28KB RAM density (vs DSPIC33EP128MU814-E/PL)
Design Notes
In the 144-LQFP (20x20 mm) package, place a 100 nF ceramic decoupling capacitor at every VDD/VSS pin pair, plus bulk 10 uF capacitors distributed across the die area. The 60 MHz, 3.3V core draws switching current peaks that couple into ground returns; use a solid ground plane on layer 2 and keep the VDD ring on the top layer. Connect all exposed VSS pins - do not leave any floating, as this raises ground bounce and degrades ADC accuracy and EMC performance.
The device runs from a single 3.3V rail with core regulation internal to the die. Ensure the supply can handle transient load steps when the 60 MIPS core exits idle or sleep modes; Microchip recommends allowing wake-up stabilization time before the first instruction fetch after Sleep. For USB Host/OTG designs, budget extra current for VBUS supply (500 mA per USB spec) from your 5V rail, and use an external 5V-to-3.3V regulator with adequate transient response for the MCU rail.
Two frequent pitfalls with dsPIC33EP MU814 designs: (1) Peripheral Pin Select (PPS) must be explicitly configured before UART, SPI, or other remappable peripherals function - firmware that assumes default pin mapping will appear dead. (2) Flash programming at 3.3V requires correct VPP generation during ICSP; incorrect MCLR circuitry is the most common cause of field-programming failures. Reserve the MCLR pin with a 10K pull-up and programming header per Microchip's programming specification.
Compliance Information
AEC-Q100 automotive qualification and extended -E temperature grade confirmed by DigiKey and Hotenda listings. RoHS/lead-free per standard Microchip production; REACH and halogen-free status not stated in provided data.
