dsPIC33EP512GM306-I/PT
dsPIC33EP512GM306-I/PT - 70 MIPS DSC, 512KB Flash, 64-TQFP | Microchip
The Microchip dsPIC33EP512GM306-I/PT is a 16-bit Digital Signal Controller (DSC) from the dsPIC33E family, delivering up to 70 MIPS through a 140 MHz dsPIC DSC core with integrated single-cycle MAC DSP engine, packaged in a 64-pin TQFP (10x10 mm) and supplied in 3.0 V to 3.6 V industrial-grade temperature range (-40C to +85C). It integrates 512 KB of Flash program memory, 48 KB of SRAM, and on-chip peripherals tuned for high-performance precision motor control, digital power conversion, and advanced sensor processing.
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.
USD $7,18
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