DSPIC33EP128MC504-I/TL - 70 MIPS 16-bit DSC | Microchip
MPN: DSPIC33EP128MC504-I/TL ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.12 | $6.12 |
| 10 | $5.55 | $55.50 |
| 100 | $4.98 | $498.00 |
| 500 | $4.52 | $2,260.00 |
| 1,000 | $4.1 | $4,100.00 |
DSPIC33EP128MC504-I/TL Overview
A digital signal controller combines the computational architecture of a microcontroller with DSP-engine features such as single-cycle multiply-accumulate, hardware division support, and DSP instruction extensions. Within the power-management hierarchy of embedded systems, a DSC sits between general-purpose MCUs and dedicated DSPs, making the dsPIC33E family a standard choice for closed-loop control systems that need both fast math and rich peripherals on one chip.
Key features include a 16-bit dsPIC core clocked up to 70 MIPS from an internal PLL, high-speed motor-control PWM (MCPWM) outputs with complementary modes and dead-time control, on-chip comparators and op amps, CAN 2.0B for industrial networking, and serial connectivity spanning I2C, SPI, UART/USART, IrDA, LINbus, and quadrature encoder interface (QEI).
Architecturally, the device integrates an enhanced flash controller with ECC-class flash options in the wider family, a fast interrupt structure for deterministic control loops, and five 16-bit timers, enabling deterministic field-oriented control (FOC) execution for motor drive algorithms without external DSP support.
Typical applications include brushless DC and PMSM motor control for industrial drives, digital power conversion (PFC, LLC), and automotive-adjacent embedded control systems using the CAN interface.
Design consideration: the I-grade device operates from -40C to +85C and is supplied at 3.3V; budget the 6x6 mm thermal pad copper area carefully in high-MIPS motor-drive loads to keep junction temperature in range.
This page synthesizes distributor pricing, verified drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone, with prices as of 2026-09-24.
Drop-in alternatives for DSPIC33EP128MC504-I/TL — 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 DSPIC33EP128MC504-I/TL (same form factor and footprint) — differing in Operating Temperature, Package, Supply Voltage, Connectivity, Core.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33EP128MC504T-I/TL
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33EP128MC504T-E/TL
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33EP128MC504-E/TL
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$3.75 / Unit
View Datasheet →DSPIC33EP256MC504-I/TL
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP64MC504-I/TL
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP128MC504-I/TL Maximum Ratings & Electrical Characteristics
| Core | 16-bit dsPIC33EP DSC core |
| Maximum CPU Speed | 70 MIPS |
| Program Memory Size | 128 KB (43K x 24) Flash |
| RAM Size | 16 KB |
| Supply Voltage | 3.3 V (2.5 V to 3.6 V range) |
| Package | 44-VTLA (6x6 mm) exposed pad |
| Number of Pins | 44 |
| Mounting Type | Surface Mount |
| Connectivity | CANbus, I2C, IrDA, LINbus, QEI, SPI, UART/USART |
| Timers | 5 |
| Motor Control PWM | MCPWM (high-speed, complementary outputs) |
| Analog Peripherals | Op amps, comparators, ADC, PTG |
| Operating Temperature | -40C to +85C (I grade) |
| RoHS Status | Compliant |
| Packaging | Tape & Reel (TL suffix) |
| Product Family | dsPIC33EP128MC |
DSPIC33EP128MC504-I/TL 44-vtla (6x6 mm) exposed pad Pin Configuration Guide
Pin configuration for DSPIC33EP128MC504-I/TL (44-vtla (6x6 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 DSPIC33EP128MC504-I/TL.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33EP128MC504-I/TL is suitable for 6 applications: Brushless DC and PMSM Motor Control, Digital Power Conversion, Industrial Automation Nodes with CAN, Embedded Audio and Signal Processing, Building Automation and HVAC Control, Battery-Powered Portable Instruments.
Brushless DC and PMSM Motor Control
The DSPIC33EP128MC504-I/TL fits precision BLDC and PMSM drives because its 70 MIPS core executes field-oriented control (FOC) loops at 10-20 kHz update rates with single-cycle MAC instructions, while the MCPWM peripheral generates complementary PWM pairs with hardware dead-time insertion, removing timing jitter from software. On-chip op amps condition shunt-resistor current feedback and comparators implement cycle-by-cycle overcurrent limiting without external analog ICs, and the QEI interface reads rotary encoder position directly. The 3.3 V, -40C to +85C I-grade rating covers most industrial drive environments.
Recommended
Digital Power Conversion
In digital power supplies such as PFC stages, LLC converters, and synchronous buck regulators, the DSPIC33EP128MC504-I/TL provides the deterministic control granularity required for peak-current-mode and voltage-mode loops. The 70 MIPS core closes current-loop bandwidths in the tens-of-kilohertz range, the high-speed MCPWM supports phase-shifted full-bridge topologies, and on-chip comparators implement hardware cycle-by-cycle current limiting for fault protection independent of firmware latency. The 16 KB RAM accommodates compensation tables and telemetry buffering, while UART or CAN links report status to a supervisory controller in server or telecom power shelves.
Recommended
Industrial Automation Nodes with CAN
Factory automation nodes benefit from the DSPIC33EP128MC504-I/TL's integrated CAN 2.0B controller, which connects sensors and actuators to industrial CANopen-style networks at up to 1 Mbps using only an external transceiver. The 44-pin 6x6 mm package exposes enough I/O for quadrature encoders via the QEI peripheral, multiple SPI/I2C sensor buses, and safety-limit switches, while five 16-bit timers support coordinated multi-axis event scheduling. The -40C to +85C I-grade temperature range and RoHS compliance suit both panel-mounted and machine-integrated deployments in harsh industrial environments.
Recommended
Embedded Audio and Signal Processing
The DSP instruction set of the DSPIC33EP128MC504-I/TL - including single-cycle multiply-accumulate and dual operand fetch - enables efficient FIR/IIR filtering, FFT analysis, and audio effect processing at the 70 MIPS core rate. UART/USART and SPI interfaces connect to audio codecs and DACs, while the 16 KB RAM holds filter coefficient sets and sample buffers for streaming pipelines. Designers use this DSC in powered speakers, instrumentation front-ends, and acoustic analyzers where a full DSP would be overkill but plain MCUs lack the math throughput for real-time convolution and adaptive filtering tasks.
Recommended
Building Automation and HVAC Control
Fan, pump, and damper control in building automation uses the DSPIC33EP128MC504-I/TL's combination of sensorless motor control and network connectivity. The 70 MIPS core runs efficient trapezoidal and sensorless FOC algorithms for variable-speed fans, while LINbus and I2C interfaces integrate with room controllers and environmental sensors; the PTG (peripheral trigger generator) offloads repetitive ADC sampling sequences from the CPU. Its 3.3 V supply simplifies integration with modern logic-level sensors, and the 128 KB Flash leaves headroom for field-updatable control profiles and demand-response scheduling logic.
Recommended
Battery-Powered Portable Instruments
Portable measurement and diagnostic instruments leverage the DSPIC33EP128MC504-I/TL's 3.3 V operation and flexible clocking to balance performance and battery life: the core runs at 70 MIPS when executing FFT analysis of acquired signals and scales down during idle acquisition windows. The 12-bit-class ADC channels with on-chip op amp buffering digitize sensor outputs directly, SPI/I2C connect to displays and data-logging memory, and UART bridges to USB via MCP2200 for PC connectivity. The compact 6x6 mm 44-pin VTLA footprint fits handheld enclosure constraints while exposing 44 I/O lines.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33EP128MC504-I/TL — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33EP128MC504T-I/TL | DSPIC33EP128MC504T-E/TL | DSPIC33EP256MC504-I/TL | DSPIC33EP64MC504-I/TL |
|---|---|---|---|---|---|
| Package | 44-VTLA (6x6 mm) | 44-VTLA (6x6 mm) - same | 44-VTLA (6x6 mm) - same | 44-VTLA (6x6 mm) - same | 44-VTLA (6x6 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core Speed | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS |
| Flash Memory | 128 KB (43K x 24) | 128 KB | 128 KB | 256 KB | 64 KB |
| Operating Temperature | -40C to +85C (I grade) | -40C to +85C | -40C to +125C (E grade) | -40C to +85C | -40C to +85C |
| Motor Control PWM | MCPWM, high-speed complementary | MCPWM - same | MCPWM - same | MCPWM - same | MCPWM - same |
| Connectivity | CAN, I2C, SPI, UART, IrDA, LIN, QEI | Identical | Identical | Identical | Identical |
Key Differentiators
- Extended temperature option in identical footprint (vs DSPIC33EP128MC504T-E/TL)
- Memory scalability without re-layout (vs DSPIC33EP256MC504-I/TL)
- Cost-optimized entry point (vs DSPIC33EP64MC504-I/TL)
Design Notes
Power the DSPIC33EP128MC504-I/TL from a clean 3.3 V rail within the 2.5 V to 3.6 V range; core voltage is generated internally by the on-chip regulator, so place the recommended low-ESR decoupling capacitor on the VDDCORE pin as close to the pin as possible. Decouple each VDD pin with 0.1 uF ceramic plus one bulk 10 uF per supply domain. Estimated: at 70 MIPS the core current is in the tens-of-mA class per the datasheet electrical characteristics tables - budget regulator headroom accordingly.
The 44-VTLA 6x6 mm package has an exposed thermal pad that also serves as the primary ground connection. Solder it to a grounded copper keepout with an array of thermal vias (typically 3x3 or 4x4) to the ground plane - do not leave the pad floating, as this degrades both thermal performance and ground integrity for the ADC and MCPWM switching currents. Keep analog feedback traces (op amp/comparator inputs) away from PWM output routing to prevent offset injection.
Confirm the RAM size against the current Microchip datasheet before allocating buffers: distributor listings conflict, with Microchip USA citing 8 KB and FindIC's datasheet summary citing 16 KB for the DSPIC33EP128MC504. In FOC applications, also verify that the PLL configuration yields 70 MIPS (FOSC-based, 3.3 V supply) and that configuration fuses for the watchdog and oscillator mode match your hardware, since incorrect CONFIG settings are the most common first-bring-up failure for dsPIC33EP devices.
Estimated: a 70 MIPS DSC in a 6x6 mm exposed-pad QFN typically dissipates well under 0.5 W at 3.3 V, giving a comfortable margin in the -40C to +85C I-grade envelope on a standard 2-layer board with a solid ground pour. For the E-grade variant (-40C to +125C ambient) in sealed enclosures, model junction temperature using the datasheet theta-JA value and derate maximum clock speed if the estimate exceeds the 125C junction limit plus margin.
Compliance Information
RoHS compliant and lead-free per DigiKey listing. REACH, halogen-free, and conflict-minerals declarations should be confirmed via Microchip's official compliance portal.
