DSPIC33EP128GM604-I/PT - 16-Bit 70 MIPS DSC | Microchip
MPN: DSPIC33EP128GM604-I/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.2 | $6.20 |
| 10 | $5.58 | $55.80 |
| 100 | $4.96 | $496.00 |
| 500 | $4.34 | $2,170.00 |
| 1,000 | $3.88 | $3,880.00 |
DSPIC33EP128GM604-I/PT Overview
A digital signal controller combines the compute power of a digital signal processor (DSP) with the peripheral integration and deterministic control of a microcontroller (MCU). Within the embedded processor hierarchy, the DSC sits between general-purpose MCUs and dedicated DSPs, making it the preferred architecture for closed-loop control systems such as field-oriented motor control, digital power conversion, and sensor signal processing, where both fast multiply-accumulate (MAC) math and rich peripherals are required in a single chip.
Key features of the DSPIC33EP128GM604-I/PT include the 70 MIPS dsPIC33E core, dual on-chip operational amplifiers (OpAmps), Motor Control PWM with up to 8 output-compare/PWM channels, 4 quadrature encoder interface (QEI) inputs, and connectivity spanning CANbus, I2C, SPI, UART/USART, IrDA, and LINbus. The Mouser listing summarizes the peripheral mix as 128 KB, 16 KB RAM, 12-bit ADC, 8/8 IC/OC, and dual OpAmps.
Technically, the dsPIC33E core provides DSP instruction extensions including a barrel shifter, modulo and bit-reversed addressing, and single-cycle MAC operations with a 24-bit instruction word. Peripherals include DMA, I2S audio, brown-out detect/reset, power-on reset, watchdog timer, and motor-control PWM modules, enabling designers to offload real-time tasks from software. Flash program memory uses a 24-bit width, and the device is fabricated in CMOS process technology.
Typical applications include precision brushless DC (BLDC) and PMSM motor control with sensor feedback via QEI, digital power supplies and inverters, CAN-networked industrial nodes, and audio/I2S processing. The dual OpAmps allow current-sense amplification on-chip, reducing external component count in motor drive designs.
A key design consideration is clock selection: the maximum external clock frequency cited is 60 MHz (yielding 70 MIPS via the internal PLL), so layout and crystal placement should follow Microchip's oscillator guidelines, and all VDD/VSS pairs must be decoupled and connected.
This page synthesizes distributor pricing context, drop-in alternatives from the same family, and practical design notes not found in the manufacturer datasheet, providing an information gain for sourcing and selection engineers.
Drop-in alternatives for DSPIC33EP128GM604-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 DSPIC33EP128GM604-I/PT (same form factor and footprint) — differing in Package, Operating Temperature, Core, Core Architecture, Input Capture / Output Compare.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33EP256GM604-I/PT
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$3.86 / Unit
View Datasheet →DSPIC33EP64GM604-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 →DSPIC33EP128MC204-I/PT
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$3.67 / Unit
View Datasheet →DSPIC33EP128GP604-I/PT
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP128GM604-I/PT Maximum Ratings & Electrical Characteristics
| Core | dsPIC33E 16-bit DSC |
| Performance | 70 MIPS |
| Program Memory Size | 128 KB (43K x 24) |
| Program Memory Type | FLASH |
| Program Memory Width | 24-bit |
| RAM Size | 16 KB |
| Maximum Clock Frequency | 60 MHz |
| Package | 44-TQFP (10x10 mm) |
| Mounting Style | Surface Mount (SMD) |
| Number of I/O | 35 |
| Connectivity | CANbus, I2C, IrDA, LINbus, QEI, SPI, UART/USART |
| Peripherals | Brown-out Detect/Reset, DMA, I2S, Motor Control PWM, POR, PWM, WDT |
| OpAmps | 2 on-chip operational amplifiers |
| Quadrature Encoder Interfaces | 4 QEI inputs |
| Input Capture / Output Compare | 8/8 IC/OC channels |
| Technology | CMOS |
| Data Converters | ADC up to 10-bit resolution (per Microchip USA listing) |
DSPIC33EP128GM604-I/PT 44-tqfp (10x10 mm) Pin Configuration Guide
Pin configuration for DSPIC33EP128GM604-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 DSPIC33EP128GM604-I/PT.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33EP128GM604-I/PT is suitable for 6 applications: Precision BLDC/PMSM Motor Control, Digital Power Conversion, CAN-Networked Industrial Nodes, Audio Signal Processing, Embedded Sensor Fusion and IoT Sensing, Robotics and Motion Subsystems.
Precision BLDC/PMSM Motor Control
The DSPIC33EP128GM604-I/PT is purpose-built for high-performance precision motor control. Its 70 MIPS dsPIC33E core executes field-oriented control (FOC) loops with single-cycle MAC and DSP math, while 4 QEI inputs decode quadrature encoder feedback for position and speed. The dual on-chip OpAmps amplify shunt-resistor current-sense signals without external amplifiers, reducing BOM cost and board area in servo drives. The motor-control PWM module generates complementary outputs with dead-time insertion for three-phase inverters. Placed at the center of the drive board, the DSC closes current loops at tens of kHz PWM frequency while handling CAN communication simultaneously via DMA-offloaded buffers.
Recommended
Digital Power Conversion
In digital power supplies, LLC converters, and solar micro-inverters, the DSPIC33EP128GM604-I/PT provides the fast control-loop execution that digital power demands. The 70 MIPS core closes voltage and current loops with predictable latency, and the PWM peripherals support high-resolution duty-cycle updates essential for tight output regulation. ADC triggering synchronized to PWM minimizes switching-noise-induced measurement error. On-chip DMA moves ADC results to RAM without CPU intervention, keeping the ISR overhead low. The 128 KB Flash accommodates protection state machines, soft-start ramps, and communication stacks (I2C for digital telemetry, UART for host control) in a single 44-pin device.
Recommended
CAN-Networked Industrial Nodes
Industrial automation nodes benefit from the DSPIC33EP128GM604-I/PT's integrated CANbus interface alongside SPI, I2C, and up to two UARTs. A single 44-TQFP device can act as a CAN slave controller reading sensors over I2C, streaming diagnostics over UART, and driving actuators through PWM outputs. The 35 I/O pins and 8 input-capture channels allow direct interfacing with encoders, limit switches, and flow sensors. DMA on the UART and SPI reduces interrupt load in multi-protocol designs. Brown-out detect, power-on reset, and the watchdog timer provide the fault resilience required in always-on factory-floor equipment, with the industrial temperature -I suffix covering harsh enclosures.
Recommended
Audio Signal Processing
The DSPIC33EP128GM604-I/PT suits cost-sensitive audio processing thanks to its I2S peripheral and DSP core. Single-cycle MAC instructions implement biquad IIR filters, audio effects, and sample-rate conversion efficiently at 70 MIPS, while the 16 KB RAM buffers audio frames. The I2S port connects directly to audio codecs for microphone arrays, active speakers, and conferencing equipment. The 44-pin TQFP (10x10 mm) keeps the controller compact on mixed-signal boards. Designers typically reserve the dual OpAmps for microphone pre-amplification or audio-level shifting, consolidating the analog front end on-chip and shrinking the signal chain compared to discrete designs.
Recommended
Embedded Sensor Fusion and IoT Sensing
Sensor fusion nodes use the DSPIC33EP128GM604-I/PT to combine inertial, pressure, and environmental data with real-time filtering. The 16-bit fixed-point DSP instructions accelerate complementary and Kalman-style filters, while I2C and SPI simultaneously poll multiple sensor ICs. The 4 QEI inputs double as pulse counters for flow meters and incremental encoders, and input-capture channels timestamp external events precisely. DMA moves multi-sensor streams into the 16 KB RAM ring buffers without CPU stalls. For IoT gateways, the UART connects to wireless modules, and the 128 KB Flash leaves ample room for protocol stacks on top of the sensing firmware in a single compact TQFP device.
Recommended
Robotics and Motion Subsystems
Robot joints, gimbal controllers, and mobile-robot drive boards use the DSPIC33EP128GM604-I/PT as the per-axis motion controller. The 70 MIPS core runs cascaded position/velocity/current loops, four QEI inputs decode multiple encoders, and motor-control PWM drives H-bridges with hardware dead time. On-chip OpAmps condition current sensors for torque control, and the CANbus interface links each joint controller to a central robot host. The 35 GPIOs handle limit switches, brake relays, and status LEDs without external logic. The 128 KB Flash stores trajectory interpolation plus communication stacks, allowing the 44-TQFP controller to act autonomously if the network fails.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33EP128GM604-I/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33EP256GM604-I/PT | DSPIC33EP64GM604-I/PT | DSPIC33EP128GM304T-I/PT | DSPIC33EP128MC204-I/PT | DSPIC33EP128GP604-I/PT |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 44-TQFP (10x10 mm) | 44-TQFP (10x10 mm) - same | 44-TQFP (10x10 mm) - same | 44-TQFP (10x10 mm) - same | 44-TQFP (10x10 mm) - same | 44-TQFP (10x10 mm) - same |
| Core Performance | 16-bit, 70 MIPS | 16-bit, 70 MIPS | 16-bit, 70 MIPS | 16-bit, 70 MIPS | 16-bit, 70 MIPS | 16-bit, 70 MIPS |
| Flash Program Memory | 128 KB (43K x 24) | 256 KB | 64 KB | 128 KB | 128 KB | 128 KB |
| CANbus | Yes | Yes | Yes | Yes | Yes | Yes |
| Typical Use Case | Precision motor control, digital power, CAN nodes | Same, larger code base | Same, cost-reduced | General dsPIC33EP designs | Dedicated motor control | General-purpose embedded control |
Key Differentiators
- Dual on-chip OpAmps eliminate external current-sense amplifiers (vs DSPIC33EP128GP604-I/PT)
- Four QEI inputs enable multi-axis encoder feedback (vs DSPIC33EP128MC204-I/PT)
- Flash headroom growth path within the same footprint (vs DSPIC33EP64GM604-I/PT)
Design Notes
Connect and decouple every VDD/VSS pair - the ICSP programming notes (Northern Software dsPIC33EP128GM604 support page) explicitly require all VDD and VSS pins to be connected for reliable programming and operation. Place a 100 nF ceramic capacitor at each supply pin within 2 mm, plus one 4.7-10 uF bulk capacitor per supply rail. Keep the MCLR trace short and add a 10 kOhm pull-up with an ICSP header brought out on every production board for in-field reprogramming.
The device provides multiple PGECx/PGEDx pin pairs for ICSP. Use any pair, but always as a matched pair - if PGEC2 carries ICSPCLK, ICSPDAT must route to PGED2, not another PGEDx pin. Mismatched pairs are a leading cause of 'device not detected' errors in MPLAB X. Also note the maximum external clock of 60 MHz per the Microchip USA specification; 70 MIPS operation is achieved through the internal PLL, so do not assume the crystal frequency equals the MIPS rate when configuring the oscillator in code.
When using the dual on-chip OpAmps for motor current sensing, route the shunt-resistor sense lines as a Kelvin pair directly to the OpAmp input pins and keep them away from PWM switch-node traces. Synchronize ADC sampling to the PWM period (ADC triggered by PWM trigger output) so current is sampled at the center of the low-side conduction window, minimizing ripple-induced error. Use the DMA channel to transfer ADC buffers to RAM so the CPU spends its cycles in the control loop rather than data movement.
Estimated: a dsPIC33EP-class DSC at 70 MIPS with active peripherals typically draws tens of milliamps from a 3.3 V rail (well under 200 mW), so a simple LDO or buck output suffices. The dominant supply concern is transient current during simultaneous PWM edge switching; add local bulk decoupling near the TQFP power pins and verify supply droop stays within datasheet limits during worst-case peripheral activity rather than relying on average current figures alone.
Compliance Information
Distributor listings for this part flag RoHS compliance and lead-free construction. Formal REACH, halogen-free, and conflict-minerals declarations should be obtained from Microchip's official environmental reports.
