DSPIC33EP128GM306-H/PT - 16-bit 70 MIPS DSC, 128KB Flash | Microchip
MPN: DSPIC33EP128GM306-H/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $7.42 | $7.42 |
| 10 | $6.68 | $66.80 |
| 100 | $5.95 | $595.00 |
| 500 | $5.35 | $2,675.00 |
| 1,000 | $4.78 | $4,780.00 |
DSPIC33EP128GM306-H/PT Overview
A digital signal controller combines the computational throughput of a digital signal processor with the peripheral integration, interrupt architecture and ease of use of a microcontroller. Within the power-management hierarchy, the dsPIC33E family sits above basic MCUs and below full DSPs, making it a preferred single-chip solution when control loops and math-heavy algorithms must run on one device.
Key features include the enhanced dsPIC33E CPU core with DSP multiply-accumulate instructions, 12 motor-control PWM (MCPWM) channels, 8 input capture and 8 output compare channels, 2 quadrature encoder interfaces (QEI), 4 integrated operational amplifiers, a Charge Time Measurement Unit (CTMU), and Peripheral Pin Select (PPS) for flexible pin mapping.
The integrated op amps offload external analog signal-conditioning stages in current-sense paths, while the high-resolution PWM module supports complementary outputs with dead-time control - the classic requirement for three-phase inverters. The CTMU provides precise time and charge measurement for capacitive touch and time-of-flight sensing. The -H suffix indicates a -40C to +125C ambient operating grade, and the device is manufactured on Microchip's automotive-qualified flow.
Typical applications include precision three-phase BLDC/PMSM motor control, digital power supplies and solar inverters, automotive body and powertrain auxiliary modules, and industrial sensing front-ends that benefit from the on-chip op amps.
Design consideration: all VDD and VSS pin pairs must be connected and decoupled with 0.1uF ceramics placed directly at each power pin pair, and any single PGECx/PGEDx pair must be kept as a matched set for ICSP programming.
This page synthesizes distributor availability, drop-in family alternatives, and design guidance not consolidated in the manufacturer datasheet. Pricing shown as of 2026-09-23.
Drop-in alternatives for DSPIC33EP128GM306-H/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 DSPIC33EP128GM306-H/PT (same form factor and footprint) — differing in Operating Temperature, Package, Core, Supply Voltage, Timers.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33EP128GM306-I/PT
✅ Drop-In✓ In Stock
$6.9 / Unit
View Datasheet →DSPIC33EP128GM306-E/PT
✅ Drop-In✓ In Stock
$6.15 / Unit
View Datasheet →DSPIC33EP256MC506-I/PT
✅ Drop-In✓ In Stock
$4.65 / Unit
View Datasheet →DSPIC33EP128MC206-I/PT
✅ Drop-In✓ In Stock
$3.95 / Unit
View Datasheet →DSPIC33EP128GP306-I/PT
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP256GM306-I/PT
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP128GM306-H/PT Maximum Ratings & Electrical Characteristics
| Core | dsPIC33E 16-bit DSC core |
| CPU Speed | Up to 70 MIPS |
| Program Memory | 128KB (43K x 24) Flash |
| RAM | 16KB |
| Supply Voltage | 3.3 V |
| Package | 64-TQFP (10x10 mm) |
| Mounting Type | Surface Mount |
| Motor Control PWM Channels | 12 MCPWM |
| Input Capture / Output Compare | 8 IC / 8 OC |
| Quadrature Encoder Interfaces | 2 QEI |
| Integrated Op Amps | 4 |
| CTMU | Yes (Charge Time Measurement Unit) |
| Peripheral Pin Select | Yes (PPS) |
| Operating Temperature | -40C to +125C (-H grade) |
| Qualification | Automotive, AEC-Q100 |
| Packaging | Tray |
| RoHS Status | Compliant |
DSPIC33EP128GM306-H/PT 64-tqfp (10x10 mm) Pin Configuration Guide
Pin configuration for DSPIC33EP128GM306-H/PT (64-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 DSPIC33EP128GM306-H/PT.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33EP128GM306-H/PT is suitable for 6 applications: Three-Phase BLDC/PMSM Motor Control, Digital Power Supplies and Solar Inverters, Automotive Body and Auxiliary Modules, Industrial Sensing and Condition Monitoring, Embedded Control with Capacitive Touch HMI, Test, Measurement and Instrumentation Front-Ends.
Three-Phase BLDC/PMSM Motor Control
The DSPIC33EP128GM306-H/PT was architected for precision motor control: the 70 MIPS core with DSP MAC instructions executes field-oriented control (FOC) loops at multi-kHz rates, the 12-channel MCPWM module produces complementary PWM pairs with hardware dead-time insertion, and the 2 quadrature encoder interfaces decode position feedback directly. The 4 integrated op amps condition shunt-resistor current signals on-chip, removing external amplifier stages and their offset/drift errors. In a typical inverter, the PWM drives a three-phase gate-driver stage while the QEI tracks rotor angle; the single-chip integration reduces BOM count and loop latency. The -40C to +125C -H grade suits under-hood pump, fan and traction-auxiliary drives.
Recommended
Digital Power Supplies and Solar Inverters
Digital power conversion needs fast, deterministic control loops plus high-resolution PWM - both native to the DSPIC33EP128GM306-H/PT. The high-speed MCPWM module supports phase-shifted and complementary topologies used in LLC converters, totem-pole PFC stages and solar micro-inverters, with hardware dead-time and fault inputs for cycle-by-cycle current limiting. The 8 input capture channels measure switch-node timing and the CTMU supports precise time measurement for soft-start supervision. Running the compensation loop in firmware with 70 MIPS headroom allows adaptive control under wide input ranges. The 128KB Flash accommodates grid-communication stacks alongside the control code, and the AEC-Q100 qualification suits automotive onboard-charger subfunctions.
Recommended
Automotive Body and Auxiliary Modules
With AEC-Q100 qualification and a -40C to +125C operating range, the DSPIC33EP128GM306-H/PT addresses automotive auxiliary electronic modules such as pump controllers, HVAC actuator drivers, throttle-by-wire auxiliaries and lighting ballasts. The Peripheral Pin Select feature lets one firmware base remap UART, SPI and PWM pins across hardware variants, cutting platform development cost. The CTMU supports capacitive touch interfaces for splash-proof control panels, and the on-chip op amps condition resistive sensor bridges for position and pressure feedback. The 128KB Flash provides dual-partition-style headroom for OTA-safe bootloader plus application images, while CAN-capable serial peripherals integrate with vehicle networks through an external CAN transceiver.
Recommended
Industrial Sensing and Condition Monitoring
The GM-series analog integration makes this DSC an efficient single-chip sensing hub. The 4 operational amplifiers amplify low-level signals from strain gauges, thermocouples and current shunts directly on-chip; the CTMU performs precise charge and time measurement for capacitive and resistive sensing; and the 16-bit-capable core applies filtering and FFT-based vibration analysis locally at 70 MIPS. In predictive-maintenance nodes, the 8 input captures timestamp encoder or proximity events while processed results stream over UART/SPI to a gateway. The -H temperature grade survives hot panels and motor terminations, and the 64-TQFP's rich pin count accommodates multiple simultaneous sensor front-ends without external analog multiplexing.
Recommended
Embedded Control with Capacitive Touch HMI
The CTMU (Charge Time Measurement Unit) on the DSPIC33EP128GM306-H/PT enables robust mTouch-style capacitive touch buttons, sliders and proximity sensors without a dedicated touch controller. Combined with the 70 MIPS core for touch-decision filtering and the PPS feature for flexible pad routing, a single 64-TQFP device can host the complete human-machine interface plus the actuation control - for example a cooktop, dispenser or industrial panel where touch keys directly drive PWM-controlled loads. The 128KB Flash retains touch-tuning libraries, multi-language UI assets and communication firmware simultaneously. The wide -40C to +125C range and AEC-Q100 flow extend this architecture into automotive interior controls exposed to cabin heat soak.
Recommended
Test, Measurement and Instrumentation Front-Ends
In compact instrumentation, the DSPIC33EP128GM306-H/PT serves as the acquisition and control engine: the CTMU provides sub-nanosecond-class charge timing for impedance and capacitance measurements, the 4 op amps build programmable-gain front-ends, and the DSP core applies windowing and averaging at 70 MIPS. The 8 output compare channels generate stimulus waveforms and trigger pulses while input captures timestamp detector events, supporting time-of-flight and duty-cycle-based measurement techniques. The 64-TQFP package exposes enough GPIO for relay-switched gain networks and front-panel logic, and UART/SPI links stream results to a host. The 128KB Flash holds calibration tables and multiple measurement profiles in one image.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33EP128GM306-H/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33EP128GM306-I/PT | DSPIC33EP256MC506-I/PT | DSPIC33EP128MC206-I/PT | DSPIC33EP128GP306-I/PT |
|---|---|---|---|---|---|
| Package | 64-TQFP (10x10) | 64-TQFP (10x10) - same | 64-TQFP (10x10) - same | 64-TQFP (10x10) - same | 64-TQFP (10x10) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 128KB (43K x 24) | 128KB | 256KB | 128KB | 128KB |
| CPU Speed | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS |
| Operating Temperature | -40C to +125C (-H) | -40C to +85C (-I) | -40C to +85C (-I) | -40C to +85C (-I) | -40C to +85C (-I) |
Key Differentiators
- 4 integrated op amps eliminate external signal-conditioning ICs (vs DSPIC33EP256MC506-I/PT)
- Extended -40C to +125C ambient range (vs DSPIC33EP128GM306-I/PT)
- Complete motor-control peripheral set on one chip (vs DSPIC33EP128GP306-I/PT)
Design Notes
Connect ALL VDD and VSS pin pairs - per the Microchip datasheet and Northern Software ICSP notes, every power pair must be wired and decoupled. Place one 0.1uF ceramic directly at each VDD/VSS pair plus one 4.7uF-10uF bulk capacitor per supply domain. Floating a power pair is a common cause of erratic resets and ADC noise in dsPIC33E designs.
ICSP programming requires a matched PGECx/PGEDx pair: if PGEC2 carries ICSPCLK, ICSPDAT must come from PGED2 - mixing pairs from different numbers fails programming. Reserve one full pair on a programming header in production layouts. Also remember that PPS-mapped peripherals must be locked (PPS write sequence) before relying on pin assignments at runtime.
The -H grade permits -40C to +125C ambient operation, but the TQFP-64's theta_JA depends on PCB copper. Estimated: for a 70 MIPS design dissipating on the order of a few hundred milliwatts, junction rise over ambient stays well within margin on a standard 4-layer board with grounded thermal vias; re-verify with your own power budget per the datasheet thermal tables rather than assuming worst-case.
For motor-control use, keep the op-amp input traces (shunt sense lines) short and routed as Kelvin connections directly to the shunt resistors; the on-chip amplifiers' accuracy advantage is lost if PCB leakage and switching noise couple into these nets. Separate the analog ground region under the amplifier pins from the power-switching ground and join at a single point.
Compliance Information
RoHS compliant and AEC-Q100 automotive qualified per DigiKey and Hotenda product listings for DSPIC33EP128GM306-H/PT. REACH, halogen-free and conflict-minerals declarations not stated in provided data - request manufacturer certificate.
