DSPIC33EP128GM304-I/PT - 16-bit 70MIPS DSC | Microchip Technology
MPN: DSPIC33EP128GM304-I/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.12 | $6.12 |
| 10 | $5.55 | $55.50 |
| 25 | $5.31 | $132.75 |
| 100 | $4.86 | $486.00 |
| 1,000 | $4.2 | $4,200.00 |
DSPIC33EP128GM304-I/PT Overview
A digital signal controller combines the compute power of a DSP core with the peripheral integration and control architecture of a microcontroller. In the product hierarchy, the dsPIC33EP sits between general-purpose 16-bit MCUs (PIC24) and standalone DSPs, making it a power management and control processing IC that executes math-intensive control loops and general I/O tasks from a single silicon device.
Key features include the 70 MIPS dsPIC DSC core with integrated DSP multiply-accumulate instructions, 12-channel motor control PWM, 4 integrated operational amplifiers for current-sense front ends, 8 input captures and 8 output compares, 2 quadrature encoder interfaces, and 4 DMA channels. Per Mouser data, the device integrates these analog and timing peripherals without external components, reducing BOM cost in digital power designs.
Architecturally, the CMOS device operates from a 3.0V to 3.6V supply at a 60MHz external clock (70 MIPS internal via PLL), provides 5V-tolerant I/O with 15mA sink/source capability (pin-specific), peripheral pin select (PPS) for function remapping, and change-notification interrupts on all I/O pins. Five external interrupt inputs and in-circuit serial programming (ICSP) via paired PGECx/PGEDx pins support production programming and Class B safety support.
Typical applications include precision sensorless and sensored motor control (BLDC, PMSM, ACIM), digital power supplies and inverters, and industrial automation systems. The on-chip op-amps directly interface shunt resistors for field-oriented control (FOC) current feedback.
Design consideration: the -I suffix specifies operation from -40C to +85C; derate maximum clock if thermal margins are tight, and route PGEC/PGED pairs as matched pairs for ICSP reliability.
This page synthesizes distributor inventory data, drop-in family alternatives, and design guidance not consolidated in the manufacturer datasheet.
Drop-in alternatives for DSPIC33EP128GM304-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 DSPIC33EP128GM304-I/PT (same form factor and footprint) — differing in Operating Temperature, Core Architecture, Package, Core, Program Memory (Flash).
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33EP128GM304-I/PF
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33EP256GM304-I/PT
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$2.76 / Unit
View Datasheet →DSPIC33EP64GM304-I/PT
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP128GM304T-I/PT
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$3.95 / Unit
View Datasheet →DSPIC33EP128GP304-I/PT
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP128MC204-I/PT
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$3.67 / Unit
View Datasheet →DSPIC33EP128GM304-I/PT Maximum Ratings & Electrical Characteristics
| Core | dsPIC33EP 16-bit DSC core |
| Max CPU Speed | 70 MIPS |
| Clock Frequency | 60 MHz (external, per Microchip USA data) |
| Flash Program Memory | 128 KB (43K x 24) |
| RAM | 16 KB |
| Supply Voltage Range | 3.0 V to 3.6 V |
| Operating Temperature | -40C to +85C (industrial, -I suffix) |
| Package | 44-pin TQFP, 10x10 mm |
| Terminal Pitch | 0.8 mm |
| Package Code (JESD-30) | S-PQFP-G44 |
| Motor Control PWM Channels | 12 |
| Input Capture / Output Compare | 8 / 8 |
| Quadrature Encoder Interfaces | 2 |
| Integrated Op-Amps | 4 |
| DMA Channels | 4 |
| External Interrupt Inputs | 5 |
| I/O Sink/Source Current | 15 mA or 10 mA, pin-specific (standard VOH/VOL) |
| I/O Features | 5V-tolerant pins, open-drain, pull-ups/pull-downs, PPS remapping, change notification on all I/O |
| Programming Interface | ICSP via paired PGECx/PGEDx pins |
| Mounting Type | Surface Mount |
| Packaging | Tray |
| RoHS Status | Compliant |
DSPIC33EP128GM304-I/PT s-pqfp-g44 Pin Configuration Guide
Pin configuration for DSPIC33EP128GM304-I/PT (s-pqfp-g44 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 DSPIC33EP128GM304-I/PT.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33EP128GM304-I/PT is suitable for 6 applications: Sensorless/Sensored BLDC & PMSM Motor Control, Digital Power Supplies and Inverters, Industrial Automation and Robotics, Sensor Signal Processing and Data Acquisition, HVAC and Appliance Motor Drives, Automotive Auxiliary and Off-Highway Systems.
Sensorless/Sensored BLDC & PMSM Motor Control
The DSPIC33EP128GM304-I/PT is purpose-built for precision motor control: its 70 MIPS DSP core executes field-oriented control (FOC) inner current loops at 10-20 kHz PWM rates while the 12-channel motor control PWM generates complementary outputs with hardware dead-time insertion and fault shutdown. The 4 integrated op-amps directly buffer shunt-resistor current feedback, eliminating external amplifier ICs, and the 2 quadrature encoder interfaces decode incremental encoder position for closed-loop speed control. Microchip explicitly positions the dsPIC33E GM family for high-performance precision motor control systems. Used with sensorless back-EMF estimation or encoder feedback, the single-chip solution reduces BOM count and loop latency compared to MCU-plus-external-op-amp architectures.
Recommended
Digital Power Supplies and Inverters
In digitally controlled AC-DC and DC-DC converters, solar micro-inverters, and UPS systems, the DSPIC33EP128GM304-I/PT closes voltage and current loops in firmware with DSP-grade multiply-accumulate throughput. The 12-channel MC PWM supports interleaved and phase-shifted topologies with complementary outputs and cycle-by-cycle current limiting, while 4 DMA channels stream ADC results to RAM without CPU intervention, keeping interrupt latency low. The 3.0V-3.6V supply and 5V-tolerant I/O simplify interface with feedback dividers and gate-driver logic. Because control coefficients can be updated at runtime, a single PCB supports multiple output-voltage SKUs, a common reason designers select this DSC over hardwired analog control.
Recommended
Industrial Automation and Robotics
Factory automation nodes - servo drives, actuator controllers, and multi-axis robotics - benefit from the DSPIC33EP128GM304-I/PT combination of 70 MIPS control throughput and rich timing peripherals. The 8 input captures and 8 output compares handle multi-channel position timing and pulse trains, while Peripheral Pin Select (PPS) remaps UART/SPI/I2C functions to optimize PCB routing in dense enclosures. Change-notification interrupts on all I/O pins enable fast limit-switch and safety-interlock response. Class B safety support per the family datasheet addresses functional-safety audit requirements common in industrial equipment. The -40C to +85C industrial temperature grade covers unconditioned factory floor and outdoor cabinet environments.
Recommended
Sensor Signal Processing and Data Acquisition
The DSP core's 40-bit accumulator and single-cycle MAC instructions make the DSPIC33EP128GM304-I/PT effective for on-node digital filtering, FFT-based spectral analysis, and calibration math on sensor data. The 4 on-chip op-amps condition low-level signals from pressure, load-cell, or current sensors before the internal ADC samples them, and DMA moves conversion results to memory for background processing. With 128KB Flash, FFT twiddle tables and filter coefficient sets coexist with the application and communication stacks. This removes the need for a separate DSP in mid-performance sensing products such as vibration monitors and flow meters, cutting cost and board area.
Recommended
HVAC and Appliance Motor Drives
Compressor, fan, and pump drives in HVAC systems and white goods use the DSPIC33EP128GM304-I/PT to run sensorless BLDC control with integrated power-factor-correction logic on one chip. The MC PWM's dead-time control and fault inputs protect external gate drivers during stall or overcurrent events, while the op-amps and comparators implement cycle-by-cycle current limiting. 128KB Flash accommodates both PFC and motor control firmware plus communication stacks for demand-response connectivity. The industrial temperature rating and RoHS compliance suit consumer appliance regulatory requirements, and the 44-TQFP 10x10 mm footprint fits compact driver PCBs inside fan housings and compressor electronics modules.
Recommended
Automotive Auxiliary and Off-Highway Systems
For non-safety-critical automotive auxiliary functions - pumps, seat modules, HVAC blowers in off-highway and recreational vehicles - the DSPIC33EP128GM304-I/PT provides motor control with robust I/O: 5V-tolerant pins, 15mA pin-specific drive, configurable pull-ups/downs, and overvoltage clamp tolerance of up to 5mA per pin per the family datasheet. 5 external interrupt inputs capture wheel-speed or position pulses, and PPS lets designers reassign communication peripherals late in development when harness changes occur. Note that this standard-grade part is not AEC-Q100 qualified; for temperature-qualified automotive programs, evaluate Microchip's automotive-qualified dsPIC33 variants and verify qualification status on the official product page before design-in.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33EP128GM304-I/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33EP128GM304-I/PF | DSPIC33EP256GM304-I/PT | DSPIC33EP128GP304-I/PT | DSPIC33EP128MC204-I/PT |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 44-TQFP (10x10 mm, 0.8 mm pitch) | 44-TQFP - same footprint | 44-TQFP - same footprint | 44-TQFP - same footprint | 44-TQFP - same footprint |
| CPU Speed | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS |
| Flash Memory | 128 KB (43K x 24) | 128 KB | 256 KB | 128 KB | 128 KB |
| Motor Control PWM | 12 channels MC PWM | 12 channels MC PWM | 12 channels MC PWM | 8 channels standard PWM (no MC PWM) | MC-optimized PWM set |
| Integrated Op-Amps | 4 | 4 | 4 | 0 | 0 |
| Temperature Range | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
| Unit Price (approx., qty 1) | $6.12 as of 2026-09-23 (estimated) | similar tier | higher (2x flash) | similar tier | similar tier |
Key Differentiators
- 4 integrated op-amps for current-sense front ends (vs DSPIC33EP128GP304-I/PT)
- 12-channel motor control PWM with 2 QEI modules (vs DSPIC33EP128GP304-I/PT)
- 128KB Flash balances cost vs code headroom (vs DSPIC33EP256GM304-I/PT)
- Trade-off: no AEC-Q100 automotive qualification (vs DSPIC33CK automotive-qualified variants)
Design Notes
Supply the DSPIC33EP128GM304-I/PT from a clean 3.3V rail within 3.0V-3.6V. Place 0.1uF ceramic decoupling capacitors at each VDD/VSS pair of the 44-TQFP plus one bulk 4.7-10uF capacitor near the package. The 70 MIPS core switching large I/O loads causes supply droop that manifests as spurious resets - keep the VDD rail impedance low with a solid ground plane. If 5V-tolerant inputs interface external signals, add series resistance to limit the specified 5mA overvoltage clamp current when the device is unpowered.
Route the PGECx/PGEDx in-circuit serial programming pins as matched pairs to a programming header. Per the Northern Software dsPIC33EP guide, ICSP requires paired pins: if PGEC2 carries ICSPCLK, ICSPDAT must be on PGED2 - do not mix pairs. Reserve header footprint on every production PCB even if programming is done in-circuit via connectors, because PPS remapping means no alternative debug access exists once the board is populated. Keep analog op-amp input traces (AN0-AN5) short and away from MC PWM switching nodes to minimize crosstalk into current-sense feedback.
The 12-channel motor control PWM switching power stages is the dominant EMI source in typical applications. Use the hardware dead-time and fault inputs rather than software-only protection, and take advantage of selectable open-drain outputs and internal pull-ups/downs to reduce external component count on control lines. Locate the 4 on-chip op-amps' shunt-sense inputs close to the shunt resistors with Kelvin connections; the op-amps' bandwidth is sufficient for FOC only when layout parasitics are minimized. Confirm current limits against the datasheet: standard I/O is 15mA or 10mA sink/source, pin-specific.
Compliance Information
RoHS compliance and lead-free status confirmed via onlinecomponents.com and Master Electronics distributor listings. No AEC-Q100 qualification stated in provided data for this standard-grade MPN. REACH/halogen-free/conflict-minerals status not stated in provided data.
