dsPIC33EP512GM306-I/PT - 70 MIPS DSC, 512KB Flash, 64-TQFP | Microchip
MPN: dsPIC33EP512GM306-I/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $10.03 | $10.03 |
| 10 | $9.42 | $94.20 |
| 100 | $8.74 | $874.00 |
| 500 | $7.91 | $3,955.00 |
| 1,000 | $7.18 | $7,180.00 |
dsPIC33EP512GM306-I/PT Overview
A Digital Signal Controller (DSC) is a hybrid class of microcontroller that combines a deterministic MCU control pipeline with a hardware DSP multiply-accumulate (MAC) engine. In the taxonomy, a DSC sits between a microcontroller (MCU) and a digital signal processor (DSP); it executes control code C-friendly while accelerating math-heavy signal processing kernels such as Field Oriented Control (FOC), digital PID, and FFT. The dsPIC33EP 'GM' sub-family is specifically designed for motor control and digital power, integrating up to four op-amps, multiple PWMs with dead-time control, and high-speed 10/12-bit ADCs.
Key features of the dsPIC33EP512GM306-I/PT include twelve PWM channels with flexible triggering, eight 16-bit timers, four on-chip op-amps for current sensing in motor feedback loops, two 12-bit ADCs with up to 16 simultaneous sample-and-hold channels reaching 3.25 MSPS, and dual comparators. The device also integrates a Charge Time Measurement Unit (CTMU) for touch and capacitive sensing, a 16-bit Peripheral Pin Select (PPS) I/O remapping engine, and multiple UART/SPI/I2C/CAN interfaces. Its 16-channel DMA controller offloads data movement for deterministic, low-latency control loops.
Architecture is built on a 16-bit modified Harvard bus with separate program and data paths and a hardware DSP engine. With a 140 MHz CPU clock (70 MIPS), the MAC unit executes single-cycle 16x16-bit multiplies with 40-bit accumulator, ideal for high-bandwidth control loops in PMSM/BLDC drives and power conversion. The integrated op-amps and comparators form the feedback analog front-end, eliminating an external current-sense amplifier chain and improving noise immunity.
Typical applications include field-oriented control of PMSM and BLDC motors (drone ESCs, EV traction, HVAC compressors), digital power stage control for AC/DC and DC/DC converters, solar micro-inverters, servo drives, industrial automation controllers, sensorless motor control using BEMF or shunt-based observers, and high-speed signal acquisition front-ends. Audio and ultrasonic sensing are also enabled by the dual-ADC simultaneous sampling and the DSP MAC.
When designing with this device, allocate the 64-pin budget between motor power signals (PWM H/L pairs, gate-driver EN lines), analog feedback (current shunts, BEMF dividers routed through the on-chip op-amps), and communication (CAN, UART, I2C for sensors and host MCU). Decouple VDD/VSS pairs as documented in the family datasheet; route AVDD separately from DVDD to keep ADC noise below 1 LSB. A JTAG/ICSP header is recommended for in-circuit debugging using MPLAB X IDE.
This page synthesizes distributor pricing, drop-in design options, and practical design notes not found in the manufacturer datasheet, helping engineers evaluate the dsPIC33EP512GM306-I/PT for next-generation motor-control and digital-power designs.
Drop-in alternatives for dsPIC33EP512GM306-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 dsPIC33EP512GM306-I/PT (same form factor and footprint) — differing in Package, Core Architecture, Operating Temperature, ADC, Program Memory (Flash).
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33EP256GM306-I/PT
✅ Drop-In✓ In Stock
$4.61 / Unit
View Datasheet →DSPIC33EP512GM604-I/PT
✅ Drop-In✓ In Stock
$7.4 / Unit
View Datasheet →DSPIC33EP512GM310-I/PT
✅ Drop-In✓ In Stock
$6.45 / Unit
View Datasheet →DSPIC33EP512MC506-I/PT
✅ Drop-In✓ In Stock
$5.37 / Unit
View Datasheet →DSPIC33EP256GP504-I/ML
✅ Drop-In✓ In Stock
$5.68 / Unit
View Datasheet →STM32G431RBT6
✅ Drop-In✓ In Stock
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View Datasheet →dsPIC33EP512GM306-I/PT Maximum Ratings & Electrical Characteristics
| Core | dsPIC33E 16-bit DSC with DSP MAC engine |
| CPU Clock Speed | 140 MHz |
| Performance | 70 MIPS (16-bit instructions) |
| Program Memory (Flash) | 512 KB |
| Data Memory (SRAM) | 48 KB |
| Operating Voltage Range | 3.0 V to 3.6 V |
| Operating Temperature | -40C to +85C (Industrial, I grade) |
| Package | 64-pin TQFP (10x10 mm), suffix /PT |
| PWM Channels | 12 (motor-control PWM with dead-time) |
| Timers | 8 x 16-bit timers |
| On-chip Op-Amps | 4 (for current sensing / analog front-end) |
| ADC | 2 x 12-bit SAR, up to 16 channels, 3.25 MSPS, 4 simultaneous S&H |
| Comparators | 2 |
| CTMU | Charge Time Measurement Unit for capacitive sensing |
| DMA Channels | 16 |
| Peripheral Pin Select (PPS) | Yes (16-bit I/O remap) |
| Communication | UART, SPI, I2C, ECAN, USB-OTG (varies by variant) |
| RoHS | Compliant |
dsPIC33EP512GM306-I/PT 64-pin tqfp (10x10 mm), suffix /pt Pin Configuration Guide
Pin configuration for dsPIC33EP512GM306-I/PT (64-pin tqfp (10x10 mm), suffix /pt 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 dsPIC33EP512GM306-I/PT.
Refer to the datasheet for full pin configuration.
Typical Applications
dsPIC33EP512GM306-I/PT is suitable for 7 applications: Field-Oriented Control (FOC) of PMSM/BLDC Motors, Digital Power Conversion (AC/DC and DC/DC), Solar Micro-Inverters and String Inverters, Drone ESCs and UAV Motor Controllers, Industrial Servo Drives and CNC Spindles, Automotive Aftermarket (Pumps, Fans, HVAC Compressors), Sensorless FOC Refrigeration Compressors.
Field-Oriented Control (FOC) of PMSM/BLDC Motors
The dsPIC33EP512GM306-I/PT executes FOC on PMSM and BLDC motors with single-cycle DSP MAC operations enabling control loop rates above 20 kHz for smooth torque ripple, high efficiency (often >95%) and quiet motor operation. Its 4 on-chip op-amps directly sense phase currents via shunt resistors without external amplifiers, while dual 12-bit ADCs sample all three phase currents simultaneously (3.25 MSPS) for accurate Park/Clarke transforms. Place the DSC between the power inverter (MOSFET/IGBT half-bridges) and the host controller; firmware uses the MPLAB Harmony Motor Control FOC library which is ready-tested on the GM306. Trade-off vs MC sub-family: more op-amps reduce BOM and PCB area by ~6 mm sq versus discrete current-sense amplifier chains.
Recommended
Digital Power Conversion (AC/DC and DC/DC)
In AC/DC PFC, LLC, and buck-boost digital power stages, the dsPIC33EP512GM306-I/PT delivers precise PWM dead-time control (with 4 ns resolution) and high-speed 12-bit ADC sampling for current-mode control of the inductor, improving transient response and efficiency. Its 70 MIPS high-bandwidth DSP MAC processes digital compensator loops (Type-II, Type-III) at sub-microsecond latency, enabling high switching frequency converters up to 2 MHz. Use the 12 PWM outputs to drive multiple power stages with synchronized phase shifts; the dual ADCs sample primary current and voltage simultaneously for cycle-by-cycle control. Trade-off vs analog controllers: more flexibility via firmware but requires firmware validation and tuning expertise.
Recommended
Solar Micro-Inverters and String Inverters
The dsPIC33EP512GM306-I/PT is well suited for solar micro-inverters (250 W to 600 W) and string inverters where MPPT (Maximum Power Point Tracking) and grid-tie synchronization demand deterministic DSP performance. Peak DP-IC runs Perturb & Observe or Incremental Conductance MPPT at 50 Hz typical loop rates, while the on-chip op-amps sense PV short-circuit current via shunt resistors. Its 48 KB SRAM and 512 KB Flash provide ample room for grid-tie PLL routines, anti-islanding protection, and Modbus/CAN telemetry. Trade-off: requires Galvanic-isolated gate drivers and noise-immune PCB layout to pass EMC standards like EN 61000.
Recommended
Drone ESCs and UAV Motor Controllers
Quadrotor and fixed-wing UAV Electronic Speed Controllers (ESCs) benefit from the dsPIC33EP512GM306-I/PT's 70 MIPS execution, squarewave-EMF sensorless FOC, and 12 PWM channels with hardware dead-time to drive 3-phase half-bridges up to 50 A continuous. The 4 on-chip op-amps sense low-side shunt currents (common in ESC designs) for fast over-current protection and torque control. Use the UART to interface with the flight-controller flypacks (PWM, DShot, OneShot) and the ECAN peripheral for multi-rotor daisy-chain telemetry. Trade-off: not radiation-tolerant, so aerospace/military drone variants require the DS14332P line.
Recommended
Industrial Servo Drives and CNC Spindles
CNC machines, robotics, and servo drives leverage the dsPIC33EP512GM306-I/PT for high-precision position, velocity, and torque control of brushless servo motors with encoder feedback (QEI peripheral). Dual 12-bit ADCs with simultaneous sampling measure motor phase currents and the DC bus voltage for online parameter estimation; the 70 MIPS DSP MAC accelerates the cascaded PID loops that are typical in industrial servo control. ECAN interface enables multi-axis daisy-chaining with cycle times of 1 ms for coordinated motion profiles. Trade-off: industrial servo designs require robust power supply filtering and watchdog timer configuration to comply with IEC 61800 safety integrity requirements.
Recommended
Automotive Aftermarket (Pumps, Fans, HVAC Compressors)
The dsPIC33EP512GM306-I/PT controls 12 V and 48 V BLDC pumps, radiator fans, and HVAC compressors where 70 MIPS FOC and 4 on-chip op-amps handle phase-current sensing in high-EMI automotive electrical environments. Operating temperature range (-40C to +85C) covers the cabin and engine compartment; the device is suitable for aftermarket automotive accessories where AEC-Q100 is not mandatory. Trade-off vs AEC-Q100 qualified dsPIC33 variants: for OEM automotive (fuel pumps, oil pumps), use the AEC-Q100 qualified devices; the I/PT is appropriate for after-market and consumer automotive accessories.
Recommended
Sensorless FOC Refrigeration Compressors
Variable-speed inverter refrigerators and heat-pump compressors use the dsPIC33EP512GM306-I/PT to run sensorless FOC on PMSM compressors, eliminating Hall sensors and improving reliability by removing mechanical feedback devices. The DSC core runs BEMF-EMF observers and sliding-mode estimators in real time at 16 kHz control rate, while the 12 PWMs drive the IGBT inverter at 6 kHz switching frequency. The on-chip CTMU can be repurposed for temperature-sensor readings via thermistor biasing, simplifying BOM. Trade-off: inverter compressor designs must implement compressor soft-start and anti-cycle-lock routines to extend mechanical life of reciprocating components.
Recommended
Recommended Products Summary
Engineering reference data for dsPIC33EP512GM306-I/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33EP256GM306-I/PT | DSPIC33EP512GM604-I/PT | DSPIC33EP512GM310-I/PT | DSPIC33EP512MC506-I/PT | STM32G431RBT6 |
|---|---|---|---|---|---|---|
| Package | 64-pin TQFP (10x10 mm), /PT | 64-pin TQFP - same | 64-pin TQFP - same | 64-pin TQFP - same | 64-pin TQFP - same | 64-pin LQFP - footprint-similar but pin map differs |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | STMicroelectronics |
| Core Architecture | dsPIC33E 16-bit DSC + DSP MAC | dsPIC33E DSC (same) | dsPIC33E DSC (same) | dsPIC33E DSC (same) | dsPIC33E DSC (same) | Arm Cortex-M4F with FPU |
| CPU Clock / Performance | 140 MHz / 70 MIPS | 140 MHz / 70 MIPS | 140 MHz / 70 MIPS | 140 MHz / 70 MIPS | 140 MHz / 70 MIPS | 170 MHz / 213 DMIPS |
| Flash Memory | 512 KB | 256 KB | 512 KB | 256 KB | 512 KB | 128 KB |
| SRAM | 48 KB | 32 KB | 48 KB | 32 KB | 48 KB | 32 KB |
| On-chip Op-Amps | 4 | 4 | 4 | 4 | 2 | 0 (external required) |
| PWM Channels | 12 (motor-control PWM) | 12 | 12 | 14 | 8 | 12 (advanced-control PWM) |
| ADC | 2 x 12-bit, 3.25 MSPS, 4 S&H | 2 x 12-bit, 3.25 MSPS, 4 S&H | 2 x 12-bit, 3.25 MSPS, 4 S&H | 2 x 12-bit, 3.25 MSPS, 4 S&H | 2 x 10-bit, 1.1 MSPS | 3 x 12-bit, 4 MSPS |
| Operating Voltage | 3.0 V to 3.6 V | 3.0 V to 3.6 V | 3.0 V to 3.6 V | 3.0 V to 3.6 V | 3.0 V to 3.6 V | 2.0 V to 3.6 V |
Key Differentiators
- 4 on-chip op-amps eliminate external current-sense amplifier chain (vs DSPIC33EP512MC506-I/PT)
- Higher Flash (512 KB) supports complex motor-control libraries (vs DSPIC33EP256GM306-I/PT)
- DSC MAC engine executes single-cycle 16x16-bit MAC operations (vs STM32G432RBT6)
Design Notes
Use a star-ground topology with separate analog and digital ground planes tied at a single point near the MCU's VSS pins. Estimate: the dsPIC33EP512GM306-I/PT typically draws 60 mA active at 140 MHz and 25 mA in idle; use 100 mA LDO headroom for the 3.3 V rail. Add 100 nF decoupling on every AVDD/AVSS+DVDD/DVSS pin and bulk 10 uF tantalum or ceramic at the MCU power entry; high-frequency switching noise on AVDD directly couples into ADC readings.
At 140 MHz core clock the dsPIC33EP512GM306-I/PT dissipates approximately 350 mW typical active and 250 mW idle. The 64-pin TQFP (10x10 mm) has theta_JA ~ 55 C/W on a 2-layer PCB and ~ 38 C/W on a 4-layer PCB with thermal vias under the exposed pad. Estimated: at 85 C ambient, junction temperature reaches 105 C on 2-layer PCB (within 125 C max); 4-layer PCB required if board ambient exceeds 70 C or heavy GPIO switching. Add copper pours under the package and stitch 8-12 thermal vias to the inner ground plane.
Route the 4 on-chip op-amp outputs and the 16 PCB dual-channel inputs to dedicated analog areas of the layout, kept AWAY from PWM traces. Estimate: an internal feedback loop must be < 5 ms to avoid regulator instability. Place the 32.768 kHz crystal (if used for RTC) close to SOSCI/SOSCO pins with a guard ring to GND, and keep trace length below 5 mm. The 12 PWM outputs and the comparator outputs benefit from a series 33 ohm damping resistor to gate drivers to slow down the edges and reduce EMI emissions.
Common pitfalls when designing with the dsPIC33EP512GM306-I/PT: (1) leaving PGECx/PGEDx floating in production boards - the ICSP lines need 10K-47K pull-downs to prevent spurious debug-entry; (2) configuring the on-chip op-amps for rail-to-ground rail output which is not supported - max swing is AVDD-0.3 V to AVSS+0.3 V; (3) using the ADC inputs beyond their 3.6 V maximum rating when sensing battery voltages - always use external resistor dividers; (4) failing to enable the DSP engine in the CORCON register - the MAC operations silently return 0 without it; (5) using the USB or ECAN peripherals without enabling the PPS remapping register OSCFD.
The dsPIC33EP512GM306-I/PT's dual 12-bit ADC achieves 3.25 MSPS aggregate; for simultaneous sampling of three phase currents at 50 kHz loop rate, the analog front-end must settle within 1 us. Estimated: a 1 nF hold capacitor on the ADC pin settles in ~200 ns with a 50 ohm source. To preserve >10-bit ENOB, route analog traces AWAY from a 5 cm minimum distance from PWM gate-driver signals, use ground-shielded analog traces, and place 1 nF C0G ceramic bypass capacitors on every ADC input.
Compliance Information
RoHS and REACH compliant per Microchip product declaration. Industrial temperature grade (-40C to +85C) but NOT AEC-Q100 qualified - for OEM automotive (AEC-Q100) applications, use the AEC-Q100 qualified dsPIC33EP variants.
