DSPIC33EP128GM604-E/ML - 16-bit DSC, 128KB, 70 MIPS | Microchip
MPN: DSPIC33EP128GM604-E/ML ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.42 | $6.42 |
| 10 | $5.78 | $57.80 |
| 100 | $5.16 | $516.00 |
| 500 | $4.63 | $2,315.00 |
| 1,000 | $4.11 | $4,110.00 |
DSPIC33EP128GM604-E/ML Overview
A digital signal controller combines the computational capability of a digital signal processor with the peripheral integration and control-oriented architecture of a microcontroller. 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 applications that require both fast math and rich on-chip peripherals.
Key features of the GM604 variant include up to 70 MIPS core performance, two independent on-chip operational amplifiers/comparators (up to four in the family) with direct ADC connection, a CAN 2.0B module, high-speed PWM with complementary outputs for motor control, four DMA channels, and 13 timers. The analog block offers two independent ADC modules configurable as 10-bit at 1.1 Msps with four sample-and-hold stages, or 12-bit at 500 ksps with one sample-and-hold.
Architecturally, the dsPIC33E core uses a modified Harvard pipeline with DSP multiply-accumulate instructions, barrel shifter, and modulo/circular addressing, enabling real-time control loops such as field-oriented control (FOC) without external math coprocessors. The internal bus architecture and four DMA channels offload data movement from the CPU, sustaining deterministic interrupt latency for time-critical loops.
Typical applications include precision sensorless and encoder-based motor control (PMSM, BLDC, ACIM), automotive and industrial power conversion, digital power supplies, and battery management systems, where the combination of high-speed PWM, dual ADCs, and CAN communication directly maps to system requirements.
A key design consideration is that the -E temperature grade (-40C to +125C) makes this part AEC-Q100 suitable for automotive deployments, but Flash write-endurance and core operating frequency derating at high temperature should be checked in the manufacturer datasheet.
This page synthesizes verified distributor pricing, drop-in alternatives, pinout guidance, and practical design notes not consolidated in the manufacturer datasheet, providing a single reference for selection engineers.
Drop-in alternatives for DSPIC33EP128GM604-E/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 DSPIC33EP128GM604-E/ML (same form factor and footprint) — differing in Operating Temperature, Package, ADC Resolution, Supply Voltage, Core.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33EP128GM604-I/ML
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP256GM604-E/ML
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$6.55 / Unit
View Datasheet →DSPIC33EP64GM604-E/ML
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP128GP604-E/ML
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP128GM304T-I/ML
✅ Drop-In✓ In Stock
$3.62 / Unit
View Datasheet →DSPIC33EP128GM604-E/ML Maximum Ratings & Electrical Characteristics
| Core | dsPIC33E, 16-bit |
| Max CPU Speed | 70 MIPS |
| Program Memory (Flash) | 128KB (43K x 24) |
| SRAM | 16KB |
| Supply Voltage | 3.3V |
| ADC Resolution | 10-bit (1.1 Msps) / 12-bit (500 ksps) |
| ADC Channels | Up to 49 analog inputs (family) |
| Op Amps / Comparators | Up to 4 on-chip op amps (family) |
| CAN Module | CAN 2.0B |
| DMA Channels | 4 |
| Timers | 13 |
| Operating Temperature | -40C to +125C |
| Package | 44-QFN (8x8 mm), exposed pad |
| Mounting Type | Surface Mount |
| Application Qualification | Automotive, AEC-Q100 environment (per distributor data) |
| Programming Interface | ICSP (PGECx/PGEDx pairs) |
DSPIC33EP128GM604-E/ML 44-qfn (8x8 mm), exposed pad Pin Configuration Guide
Pin configuration for DSPIC33EP128GM604-E/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 DSPIC33EP128GM604-E/ML.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33EP128GM604-E/ML is suitable for 6 applications: Precision Motor Control (FOC for PMSM/BLDC), Digital Power Supplies and Inverters, Automotive Body and Auxiliary Motor Systems, Industrial Sensor Conditioning and Data Acquisition, Battery Management and DC-DC Conversion in Energy Storage, Robotics and Factory Automation Drives.
Precision Motor Control (FOC for PMSM/BLDC)
The DSPIC33EP128GM604-E/ML is purpose-built for field-oriented control of PMSM and BLDC motors: the 70 MIPS DSP core executes current-loop mathematics with single-cycle MAC instructions, while up to four on-chip op amps amplify shunt current signals directly into the ADC. The two independent ADC modules - 10-bit at 1.1 Msps or 12-bit at 500 ksps - sample phase currents with flexible, PWM-synchronized trigger sources for deterministic loop timing. High-speed PWM with complementary outputs and programmable dead time drives the inverter stage. Place the DSC between the gate-driver inputs and current-sense shunts, with op-amp outputs routed on short traces to the dedicated ADC pins; the integrated analog path removes external amplifiers, reducing BOM cost and offset error. The 4 DMA channels stream sampled data without CPU intervention, keeping interrupt latency low during commutation interrupts.
Recommended
Digital Power Supplies and Inverters
In digitally controlled power converters - LLC, totem-pole PFC, and solar micro-inverters - the DSPIC33EP128GM604-E/ML provides the control bandwidth and analog precision the loop requires. The dual ADCs permit simultaneous sampling of output voltage and input current, and configurable trigger sources let each converter stage fire conversions on PWM boundaries, eliminating jitter-induced output ripple. The 12-bit, 500 ksps mode delivers the resolution needed for voltage-mode compensation, while the 10-bit, 1.1 Msps mode supports fast peak-current-mode loops. The high-speed PWM module's complementary outputs with programmable blanking protect against switching-edge noise in current sensing. Firmware-implemented compensators (Type II/Type III) run comfortably at 70 MIPS with headroom for housekeeping tasks. The CAN 2.0B module enables PMBus-like supervision messaging in telecom rectifiers, and the -40C to +125C grade survives outdoor and power-stage-adjacent ambient temperatures.
Recommended
Automotive Body and Auxiliary Motor Systems
For automotive auxiliary drives - HVAC blowers, pumps, electronic throttle, and wiper systems - the DSPIC33EP128GM604-E/ML combines the -E extended temperature grade (-40C to +125C) with AEC-Q100 environment qualification cited in distributor data, plus the CAN 2.0B interface required for in-vehicle networks. The dual ADCs handle position sensor inputs (hall, resolver-adjacent quadrature via QEI support in the encoder interface) while the op amps condition phase-current shunts for the control loop. The 128KB Flash accommodates the control application, CAN stack, and diagnostic/UDS firmware with margin for field updates. Four DMA channels and 13 timers offload housekeeping from the CPU, sustaining real-time behavior under bus load. Designers should apply Microchip's functional-safety guidance and derate maximum clock frequency at the upper temperature extreme per the family datasheet electrical tables.
Recommended
Industrial Sensor Conditioning and Data Acquisition
The on-chip analog subsystem makes the DSPIC33EP128GM604-E/ML a compact front end for industrial sensor nodes. Up to four operational amplifiers buffer and amplify signals from pressure bridges, thermocouple-adjacent circuitry, and current transducers directly into the ADC input multiplexer - 11 to 49 analog input channels across the family - removing discrete amplifier stages. The two independent ADC modules can run different resolutions and sample rates simultaneously, for example 12-bit, 500 ksps on a precision pressure channel while a 10-bit, 1.1 Msps channel monitors a fast vibration signal. Programmable references with 32 voltage points and programmable blanking improve measurement integrity near switching events. DMA streams conversion results to the 16KB SRAM without CPU cycles. The -40C to +125C rating and 3.3V supply fit both cabinet-mounted and field-deployed industrial environments with wide thermal profiles.
Recommended
Battery Management and DC-DC Conversion in Energy Storage
In battery management systems and bidirectional DC-DC converters for energy storage, the DSPIC33EP128GM604-E/ML supplies the measurement and control backbone. Dual ADCs simultaneously digitize cell-stack voltage and inductor current, while the on-chip op amps condition shunt signals without external amplifiers. The high-speed PWM generates the phase-shifted or complementary drive signals required by synchronous buck/boost and CLLC stages, with programmable dead-time control protecting the power bridge. The CAN 2.0B module communicates state-of-charge and fault data to a vehicle or site controller, and the 13 timers plus 4 DMA channels maintain watchdogs and housekeeping without disturbing the fast control loop. The -E grade sustains -40C to +125C operation needed near power stages. Firmware-based coulomb counting and balancing algorithms fit comfortably in the 128KB Flash with 16KB SRAM supporting filtering state.
Recommended
Robotics and Factory Automation Drives
Industrial motion nodes - servo drives, stepper controllers, and joint actuators - benefit from the DSPIC33EP128GM604-E/ML's deterministic control pipeline. The quadrature encoder interface support and QEI-capable inputs decode motor position feedback, while 70 MIPS core performance executes cascade position/velocity/current loops with single-cycle DSP math. The high-speed PWM drives both servo bridges and microstepping stages, and the dual ADCs sample bus voltage and phase current with PWM-synchronized triggers for consistent loop timing. On-chip op amps minimize the analog front-end footprint on dense multi-axis PCBs. The CAN 2.0B module integrates the controller into factory fieldbus architectures, and four serial I/O ports support peripheral expansion. The -40C to +125C range tolerates cabinet and motor-adjacent temperatures, and 128KB Flash holds the motion profile engine plus communication stack with headroom for field upgrades.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33EP128GM604-E/ML — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33EP128GM604-I/ML | DSPIC33EP256GM604-E/ML | DSPIC33EP64GM604-E/ML | DSPIC33EP128GM304T-I/ML |
|---|---|---|---|---|---|
| Package | 44-QFN (8x8 mm, ML) | 44-QFN (8x8 mm, ML) - same | 44-QFN (8x8 mm, ML) - same | 44-QFN (8x8 mm, ML) - same | 44-QFN (8x8 mm, ML) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Program Memory | 128KB (43K x 24) | 128KB (43K x 24) | 256KB | 64KB | 128KB |
| Max CPU Speed | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS |
| Operating Temperature | -40C to +125C (-E) | -40C to +85C (-I) | -40C to +125C (-E) | -40C to +125C (-E) | -40C to +85C (-I) |
| On-chip Op Amps | Up to 4 (GM6xx analog feature set) | Up to 4 (identical die) | Up to 4 | Up to 4 | Reduced (GM3xx feature set) - review required |
| CAN Module | CAN 2.0B | CAN 2.0B | CAN 2.0B | CAN 2.0B | CAN (per family) - verify variant |
Key Differentiators
- Extended temperature with full analog feature set (vs DSPIC33EP128GM604-I/ML)
- Motor-control analog integration (vs DSPIC33EP128GM304T-I/ML)
- Scalable Flash on the same footprint (vs DSPIC33EP256GM604-E/ML)
Design Notes
Connect ALL VDD and VSS pins of the 44-QFN (8x8, ML) package; per Microchip programming documentation, leaving any supply pair floating will prevent ICSP programming. Provide at least one matched PGECx/PGEDx pair to a programming header - if PGEC2 carries ICSPCLK, the paired PGED2 must carry ICSPDAT. Place 100 nF ceramic decoupling capacitors at each supply pin pair, and solder the exposed pad to a grounded thermal array (4x4 via stitching) both for heat spreading at 125C ambient and for return-path integrity on the high-speed PWM and ADC analog grounds.
Do not assume the GM604's analog feature set transfers when substituting family variants: the GM3xx series (e.g., DSPIC33EP128GM304) removes on-chip op amps, breaking shunt-amplifier front ends designed around the internal amplifiers. Also, the /MR package (smaller body) is not footprint-compatible with the /ML 8x8 mm QFN despite matching pin functions - never swap without PCB rework. Finally, verify Flash endurance and maximum clock derating at +125C in the family datasheet electrical tables before locking the control-loop frequency.
Estimated: at 70 MIPS with typical DSC core current on the order of tens of milliamps, power dissipation in the 44-QFN ML package is well under 0.5W, giving a junction rise of roughly 20-30C above ambient depending on copper area - safe within the -40C to +125C window for most designs. However, in motor-drive boards the DSC often shares the PCB with hot power stages; keep the controller at least 10-15 mm from inverter hotspots and route the exposed-pad ground plane to large copper pours so ambient at the die stays well below the +125C ceiling.
Compliance Information
Distributor listings (Hotenda, DigiKey) identify the part as automotive with AEC-Q100 environment qualification. RoHS/lead-free status inferred from active distributor catalog status; REACH, halogen-free, and conflict-minerals details not stated in provided data.