DSPIC33EP256MC204T-I/ML - 16-bit 70 MIPS DSC 256KB Flash | Microchip
MPN: DSPIC33EP256MC204T-I/ML ✓ Active| Qty | Unit Price | Extended |
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| 1 | $0 | $0.00 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
DSPIC33EP256MC204T-I/ML Overview
A digital signal controller combines the compute architecture of a microcontroller with the DSP engine of a digital signal processor. In the power-management hierarchy, the dsPIC33EP family sits above basic MCUs: its 16-bit dsPIC core adds single-cycle MAC, DSP multiply-accumulate and modulo addressing, making it a natural fit for closed-loop control systems such as field-oriented motor control and digitally controlled power supplies, where a plain MCU would struggle with control-loop math.
Key features include the 70 MIPS dsPIC33EP core with integrated DSP engine, on-chip Motor Control PWM (MCPWM) peripherals with complementary outputs and dead-time control, quadrature encoder interface (QEI) inputs for motor feedback, integrated operational amplifiers and comparators for current sensing, and an industrial temperature rating of -40C to +85C denoted by the /I suffix.
Technical depth: the dsPIC33E architecture pipelines instruction fetch and execution so that DSP instructions execute in a single cycle at 70 MIPS. The high-speed PWM module supports center-aligned and edge-aligned modes essential for space-vector PWM in three-phase inverters. The analog front-end (op amps, comparators, high-speed 10/12-bit ADC) allows direct current-shunt sensing without external amplifier ICs, reducing BOM count in motor drive designs.
Typical applications include brushless DC and PMSM motor drives, solar inverters and digital power conversion, and embedded sensing systems that need DSP-class math. The T suffix denotes tape-and-reel packaging for automated assembly.
Design consideration: the 44-QFN exposed pad must be soldered to a grounded copper pour for both thermal dissipation and signal integrity; the part runs from a single 3.3V supply with a 3.6V absolute maximum, so 5V-tolerant considerations apply to I/O design.
This page synthesizes distributor pricing, drop-in family alternatives, and practical motor-control design notes not found in the manufacturer datasheet alone.
Drop-in alternatives for DSPIC33EP256MC204T-I/ML — 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 DSPIC33EP256MC204T-I/ML (same form factor and footprint) — differing in Product Family, RAM, Package, Supply Voltage, Core Architecture.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33EP256MC204T-E/ML
✅ Drop-In✓ In Stock
$3.9 / Unit
View Datasheet →DSPIC33EP128MC204T-I/ML
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$3.45 / Unit
View Datasheet →DSPIC33EP64MC204T-I/ML
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$2.61 / Unit
View Datasheet →DSPIC33EP256MC204T-I/ML Maximum Ratings & Electrical Characteristics
| Core | dsPIC33EP 16-bit DSC core |
| Maximum CPU Speed | 70 MIPS |
| Flash Program Memory | 256KB (85.5K x 24) |
| RAM | 32KB |
| Supply Voltage | 3.3 V |
| Package | 44-QFN (8x8 mm) exposed pad |
| Pin Count | 44 |
| Operating Temperature | -40C to +85C (I grade) |
| Mounting Type | Surface Mount |
| Motor Control PWM (MCPWM) | Yes |
| Quadrature Encoder Interface (QEI) | Yes |
| Integrated Op Amps | Yes |
| Integrated Comparators | Yes |
| Packaging | Tape & Reel (T suffix) |
| Product Family | dsPIC33EP256MC20x |
| Core Frequency | 60 MHz (per distributor listing) |
DSPIC33EP256MC204T-I/ML 44-qfn (8x8 mm) exposed pad Pin Configuration Guide
Pin configuration for DSPIC33EP256MC204T-I/ML (44-qfn (8x8 mm) exposed pad 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 DSPIC33EP256MC204T-I/ML.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33EP256MC204T-I/ML is suitable for 6 applications: BLDC / PMSM Motor Control, Digital Power Conversion, Industrial Automation and Sensing, Embedded Audio and Signal Processing, Automotive-Grade Subsystems (E variant), Portable and Compact Instruments.
BLDC / PMSM Motor Control
The DSPIC33EP256MC204T-I/ML is purpose-built for high-performance precision motor control, which is the primary application Microchip cites for the dsPIC33E family. Its 70 MIPS DSP core executes field-oriented control (FOC) loops fast enough for high-speed PMSM drives, while the Motor Control PWM (MCPWM) module generates complementary gate-drive signals with hardware dead-time insertion - eliminating software timing jitter. The quadrature encoder interface (QEI) reads rotor position directly, and the integrated op amps and comparators condition current-shunt signals without external amplifier ICs. Combined with its 256KB Flash for complex control algorithms and sensorless observers, this controller implements the complete drive loop in a single 44-QFN 8x8 mm device.
Recommended
Digital Power Conversion
In digitally controlled power supplies, solar inverters and PFC stages, the DSPIC33EP256MC204T-I/ML replaces analog control loops with firmware flexibility. The high-speed PWM supports center-aligned operation essential for current-mode control and reduced ripple, while the 70 MIPS core and single-cycle DSP MAC handle fast control-loop mathematics such as Notch and PID compensation at switching frequencies in the tens of kilohertz. The on-chip comparators can trigger PWM cycle-boundary current limiting in hardware for cycle-by-cycle protection independent of software latency. The 256KB Flash accommodates multiple firmware personalities (e.g. buck, boost, inverter modes) in one product platform, reducing SKU proliferation in power-product families.
Recommended
Industrial Automation and Sensing
Factory automation nodes benefit from the DSPIC33EP256MC204T-I/ML's blend of DSP math, rich analog integration and industrial -40C to +85C temperature rating. Its 44 I/O-capable pins in the compact 8x8 mm QFN suit dense sensor-interface boards, while the DSP engine accelerates FFT-based vibration analysis, digital filtering of noisy transducer signals, and metrology calculations that would bog down a general-purpose MCU. The integrated op amps front-end analog channels directly, and the QEI can interface incremental encoders on actuators and axes. With 256KB of firmware space, a single controller can host communication stacks plus the signal-processing pipeline, consolidating functionality that otherwise requires two chips.
Recommended
Embedded Audio and Signal Processing
The single-cycle DSP MAC, modulo addressing and hardware multiply of the dsPIC33EP core make the DSPIC33EP256MC204T-I/ML effective for embedded audio and real-time signal processing: active noise cancellation, tone generation, audio effects, and adaptive filtering. The 70 MIPS throughput supports sample rates well beyond voice-band while leaving headroom for control tasks. Its on-chip peripherals implement I2S-style serial streaming via SPI/UART, and the 32KB RAM buffers audio frames without external memory in compact designs. For products that mix audio processing with actuator or motor control - such as appliances, power tools and HVAC blowers with acoustic-noise compensation - one 44-QFN controller covers both domains.
Recommended
Automotive-Grade Subsystems (E variant)
While the /I grade targets industrial ranges, the same-die DSPIC33EP256MC204T-E/ML variant is AEC-Q100 qualified and rated to +125C, allowing a validated migration path into automotive subsystems such as electric power steering auxiliaries, pump and fan control, and actuator modules. Because the E variant shares the identical 44-QFN ML footprint and memory map, industrial reference designs can be requalified for under-hood or high-heat environments with a BOM substitution rather than a redesign. The MCPWM/QEI combination drives brushed and brushless automotive motors with encoder feedback, and the on-chip comparators provide hardware fault protection needed in safety-relevant motor applications.
Recommended
Portable and Compact Instruments
The 44-QFN 8x8 mm exposed-pad package with 0.5 mm pitch lets the DSPIC33EP256MC204T-I/ML fit into handheld instruments, battery-powered test tools and compact IoT-edge nodes where board area is scarce. Running from a single 3.3V rail simplifies the power tree, and the integration of op amps, comparators and high-speed ADC resources removes external analog chips. The DSP engine performs onboard calibration, FFT spectrum display, and statistical computation for measurement products, while 256KB Flash holds a full command parser, display driver and logging firmware. Tape-and-reel packaging supports high-volume automated assembly for instrument OEMs.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33EP256MC204T-I/ML — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33EP256MC204T-E/ML | DSPIC33EP128MC204T-I/ML | DSPIC33EP64MC204T-I/ML |
|---|---|---|---|---|
| Package | 44-QFN (8x8) | 44-QFN (8x8) - same | 44-QFN (8x8) - same | 44-QFN (8x8) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| CPU Speed | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS |
| Flash Memory | 256KB (85.5K x 24) | 256KB | 128KB | 64KB |
| RAM | 32KB | 32KB | 16KB | 8KB |
| Operating Temperature | -40C to +85C | -40C to +125C | -40C to +85C | -40C to +85C |
| AEC-Q100 Qualified | No | Yes | No | No |
| Motor Control Peripherals | MCPWM, QEI, Op Amps, Comparators | MCPWM, QEI, Op Amps, Comparators | MCPWM, QEI, Op Amps, Comparators | MCPWM, QEI, Op Amps, Comparators |
Key Differentiators
- Extended temperature and automotive qualification option on the same die (vs DSPIC33EP256MC204T-E/ML)
- Largest Flash in the 44-QFN MC204 pinout family (vs DSPIC33EP128MC204T-I/ML)
- Fully integrated analog front-end for motor drive (vs DSPIC33EP64MC204T-I/ML)
Design Notes
The 44-QFN (8x8 mm) exposed pad must be connected to a solid ground plane through an array of thermal vias. The exposed pad is not only the primary thermal path but also the main ground return for the die; leaving it unconnected causes unreliable grounding and poor EMC performance. Use a 3x3 or larger via array under the pad with solder paste segmented to avoid voiding. Fan out decoupling capacitors for each VDD pin within 2 mm of the pin. Verify footprint dimensions against Microchip's ML (QFN-S) drawing in the DS70000657J datasheet before generating the land pattern.
This device runs from a single 3.3V rail; the dsPIC33EP family has a tight absolute-maximum rating, so do not feed 5V signals into I/O pins. If the system includes 5V peripherals, add level shifting or choose series resistors per Microchip's 5V-tolerant guidance in the family datasheet. Decouple each VDD/VSS pair with 0.1uF ceramics plus one bulk 10uF capacitor. When switching large motor currents on the same board, separate the analog supply feeding the op-amp/ADC pins from the motor gate-driver supply, or use an LC filter to keep ADC noise low for accurate current sensing.
For motor-control use, route MCPWM outputs to gate drivers away from QEI encoder inputs and analog sense lines to prevent capacitive coupling that causes false commutation events. Use the hardware dead-time feature of the MCPWM module rather than software-inserted delays - hardware dead time is immune to interrupt latency. When using the on-chip op amps for shunt current sensing, keep the shunt-to-op-amp traces short and Kelvin-connected. Allocate the CRC/PTGO-capable PWM pins per the pin diagram in DS70000657J during schematic capture, since alternate-function mapping on the 44-pin device constrains peripheral placement.
Compliance Information
RoHS/REACH status not stated in retrieved data - verify on Microchip product page. The standard /I grade is not AEC-Q100 qualified; the DSPIC33EP256MC204T-E/ML variant is noted as AEC-Q100 qualified.
