DSPIC33EP128MC204T-I/PT - 70 MIPS 16-bit DSC 128KB | Microchip
MPN: DSPIC33EP128MC204T-I/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.1 | $6.10 |
| 10 | $5.55 | $55.50 |
| 25 | $5.3 | $132.50 |
| 100 | $4.95 | $495.00 |
| 1,000 | $4.4 | $4,400.00 |
DSPIC33EP128MC204T-I/PT Overview
A digital signal controller combines the computational architecture of a digital signal processor (DSP) with the peripheral set and ease of use of a microcontroller (MCU). Within the power-management hierarchy of embedded systems, the DSC sits between general-purpose MCUs and dedicated DSPs, offering single-cycle MAC and DSP instructions alongside standard control peripherals such as timers, UART, SPI, and I2C. The dsPIC33E family from Microchip is a successor to the dsPIC30F/33F generations and is widely used in real-time control loops.
Key features of this part include the 70 MIPS 16-bit pipeline core with DSP engine, 128KB self-programmable flash with ECC, 16KB of RAM for data buffers, motor-control peripherals including PWM channels with complementary outputs, and connectivity interfaces covering I2C, SPI, UART/USART, IrDA, LINbus, and QEI (quadrature encoder interface). The /PT suffix denotes the 44-pin TQFP (10x10) package and tape-and-reel packing; the -I suffix denotes the industrial -40C to +85C operating range.
Architecturally, the dsPIC33EP core supports single-cycle MAC operations, hardware division assist, and a rich interrupt vector table, enabling deterministic control-loop execution for field-oriented motor control, digital power conversion, and sensor signal processing. The enhanced peripheral set integrates high-resolution PWM, comparators, and ADC sampling tied to PWM triggers for tight loop latency.
Typical applications include precision brushless DC and PMSM motor control, digital power supplies and PFC stages, and embedded industrial control nodes requiring DSP-grade math throughput in an MCU-class package.
When designing with this device, budget flash and RAM early: the 128KB/16KB split is generous for control code but tight for protocol stacks plus data logging, so consider the 504-pinout variant (256KB flash) if headroom is a concern.
This page synthesizes distributor pricing, drop-in alternatives, pinout guidance, and practical design notes not consolidated in the manufacturer datasheet.
Drop-in alternatives for DSPIC33EP128MC204T-I/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 DSPIC33EP128MC204T-I/PT (same form factor and footprint) — differing in Core Architecture, Operating Temperature, Packaging, Package, RoHS Status.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33EP128MC204-I/PT
✅ Drop-In✓ In Stock
$3.67 / Unit
View Datasheet →DSPIC33EP128MC504-I/PT
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP256MC504-I/PT
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$4.6 / Unit
View Datasheet →DSPIC33EP128GP504-I/PT
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$4.28 / Unit
View Datasheet →DSPIC33EP128GM304T-I/PT
✅ Drop-In✓ In Stock
$3.95 / Unit
View Datasheet →DSPIC33EP128MC204T-I/PT Maximum Ratings & Electrical Characteristics
| Core Architecture | 16-bit dsPIC33EP DSC core |
| Maximum Clock Speed | 60 MHz (70 MIPS instruction rate) |
| Performance | 70 MIPS |
| Program Memory Size | 128KB (43K x 24) FLASH |
| RAM Size | 16KB |
| Connectivity Interfaces | I2C, SPI, UART/USART, IrDA, LINbus, QEI |
| Core Peripherals | PWM, QEI, comparators, DMA-capable peripherals |
| Package | 44-TQFP (10x10 mm) |
| Mounting Type | Surface Mount |
| Operating Temperature | -40C to +85C (industrial, -I suffix) |
| Packaging | Tape & Reel (T suffix) |
| RoHS Status | Compliant |
| Series | dsPIC33EP128MC204 |
DSPIC33EP128MC204T-I/PT 44-tqfp (10x10 mm) Pin Configuration Guide
Pin configuration for DSPIC33EP128MC204T-I/PT (44-tqfp (10x10 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 DSPIC33EP128MC204T-I/PT.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33EP128MC204T-I/PT is suitable for 6 applications: Brushless DC Motor Control, Digital Power Supplies and PFC, Industrial Automation Nodes, Embedded Sensing and Signal Processing, Battery-Powered and Portable Equipment, Automotive Auxiliary Systems (non-safety).
Brushless DC Motor Control
The DSPIC33EP128MC204T-I/PT fits BLDC motor control because the dsPIC33EP MC series integrates complementary PWM outputs for three-phase bridge driving, a QEI quadrature encoder interface for rotor position feedback, and a 70 MIPS DSP core that executes field-oriented control (FOC) loops deterministically. In a typical topology the DSC reads phase currents via its ADC synchronized to PWM triggers, computes Clarke/Park transforms and PI loops in firmware, and outputs six PWM signals with dead-time to the gate drivers. The 128KB flash holds FOC code plus communication stacks, while 16KB RAM buffers control state. Quantified benefit: single-cycle MAC operations keep current-loop periods in the tens of microseconds without floating-point hardware.
Recommended
Digital Power Supplies and PFC
The DSPIC33EP128MC204T-I/PT suits digital power conversion because its high-resolution PWM, ADC sampling tied to PWM triggers, and 70 MIPS core support switching frequencies and control bandwidths needed for LLC, buck, boost, and PFC stages. The controller closes voltage and current loops in firmware with deterministic interrupt latency, replacing analog compensation networks and enabling adaptive modes, soft-start sequencing, and fault logging. The 44-TQFP (10x10 mm) provides sufficient I/O for PWM outputs, feedback ADC channels, and I2C/SMBus telemetry to a host. Using this DSC reduces bill-of-material complexity: one 3.3V device replaces multiple analog controllers, and firmware-defined compensation allows retuning across product variants without hardware changes.
Recommended
Industrial Automation Nodes
The DSPIC33EP128MC204T-I/PT is well matched to industrial automation nodes thanks to its LINbus, UART/USART, I2C, and SPI interfaces, industrial -40C to +85C rating, and 128KB flash for protocol and application code. Typical deployments include sensor aggregation modules, small servo axes, valve controllers, and conveyor sub-controllers where a 16-bit 70 MIPS core handles real-time tasks while standard serial links report to a PLC or gateway. The QEI interface accepts incremental encoders directly, and multiple timers support scheduling and input capture for precise event timestamping. The 44-pin TQFP (10x10 mm) footprint balances I/O count against board area, and the tape-and-reel T suffix supports high-volume SMT assembly on automated production lines.
Recommended
Embedded Sensing and Signal Processing
The DSPIC33EP128MC204T-I/PT serves embedded sensing applications where raw signals need DSP-grade processing: single-cycle MAC instructions accelerate FIR/IIR filtering, FFT-based spectral analysis, and RMS computation on the 70 MIPS core. Sensor front ends for vibration, current, pressure, and ultrasonic measurement benefit from ADC sampling coordinated with timers, while 16KB RAM provides buffer space for block-processing algorithms. Connectivity via SPI and I2C links digital sensors, and UART/IrDA streams processed results to displays or hosts. Compared with a general-purpose MCU, the DSC completes equivalent filtering in fewer cycles, allowing lower clock speeds, reduced power, and headroom for additional tasks; the 128KB flash typically accommodates the DSP library plus multiple sensor drivers simultaneously.
Recommended
Battery-Powered and Portable Equipment
The DSPIC33EP128MC204T-I/PT operates from a single 3.3V rail within the dsPIC33EP family supply range, and its 16-bit core reaches 70 MIPS without the multi-voltage complexity of larger DSPs, simplifying portable power design. Applications include cordless power tools, portable instruments, and battery-management boards where the DSC runs charge control, fuel gauging math, and motor or pump drive simultaneously. Low-power idle and sleep modes of the dsPIC33EP family extend standby battery life between active control bursts. The 44-TQFP (10x10 mm) surface-mount package keeps the controller footprint compact for handheld housings. Designers should verify exact sleep-current figures in the Microchip family datasheet when qualifying battery runtime, since current depends heavily on clock configuration and peripheral enable state.
Recommended
Automotive Auxiliary Systems (non-safety)
The DSPIC33EP128MC204T-I/PT with its industrial -40C to +85C rating is usable in auxiliary automotive subsystems such as accessory motor drivers, HVAC actuator control, pump control, and lighting modules where AEC-Q100 qualification is not contractually required. For safety-relevant or under-hood applications, select the extended-temperature /E grade or Microchip's automotive-qualified dsPIC33EP variants instead, and confirm qualification level in the product selection tables. In these designs, the QEI and complementary PWM handle brushless fan and pump motors, LINbus integrates with vehicle body networks, and the 70 MIPS core supports sensorless commutation algorithms. A dedicated +3.3V regulator with load-dump protection on the input and CAN/LIN transceivers complete a typical auxiliary node architecture.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33EP128MC204T-I/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33EP128MC204-I/PT | DSPIC33EP128MC504-I/PT | DSPIC33EP256MC504-I/PT | DSPIC33EP128GM304T-I/PT |
|---|---|---|---|---|---|
| Package | 44-TQFP (10x10) | 44-TQFP (10x10) - same | 44-TQFP (10x10) - same | 44-TQFP (10x10) - same | 44-TQFP (10x10) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core Performance | 70 MIPS / 60 MHz | 70 MIPS / 60 MHz | 70 MIPS / 60 MHz | 70 MIPS / 60 MHz | 70 MIPS / 60 MHz |
| Program Flash | 128KB (43K x 24) | 128KB (43K x 24) | 256KB | 256KB | 128KB |
| Peripheral Family | MC (motor control): PWM, QEI | MC family - same | MC family - same | MC family, expanded PWM | GM family - advanced feature mix |
Key Differentiators
- Tape-and-reel delivery for volume SMT (vs DSPIC33EP128MC204-I/PT)
- Same footprint with double the flash (vs DSPIC33EP128MC504-I/PT)
- Motor-control peripheral emphasis (vs DSPIC33EP128GP504-I/PT)
Design Notes
Per the dsPIC33EP family datasheet, power the device from a nominal 3.3V supply within the family operating range and verify the ENVREG/onboard-regulator strap configuration for your exact variant before routing the power tree. Decouple every VDD pin with a 0.1uF ceramic placed within 5 mm of the pin, plus one bulk 4.7uF-10uF capacitor per supply domain. Estimated: with a 70 MIPS core at 3.3V, active core current is in the tens of milliamps per family electrical characteristics - confirm the exact figure in the latest datasheet before sizing the 3.3V regulator.
For motor-control designs, route PWM outputs to gate drivers with matched trace lengths on the three phases and keep ADC sense traces (current shunt inputs) short, guarded by ground, and away from PWM switching edges. Use the ADC trigger-from-PWM feature so sampling occurs at the PWM center, minimizing ripple-induced error. Place the crystal or internal oscillator circuit per the datasheet layout guidance with a local ground return. In the 44-TQFP, use the thermal pad-free pin escape pattern with at least 2 ground vias per VSS pin region for low-impedance return paths.
Many 44-pin dsPIC33EP functions are multiplexed: before committing the schematic, map every pin in the datasheet pin-configuration tables, because QEI, PWM fault inputs, and analog channels share pins with digital I/O and RPn remappable functions. A second pitfall is assuming /PT and /ML are interchangeable - they use different footprints (TQFP vs QFN). Finally, the T suffix means tape-and-reel: moisture sensitivity level applies, so bake or follow the MSL floor-life rules before reflow to avoid popcorn cracking during 260C reflow profiles.
Compliance Information
RoHS compliance per Microchip standard production for dsPIC33EP family and distributor listings. AEC-Q100 qualification not indicated for this exact MPN in provided data - verify with Microchip for automotive use.
