DSPIC33EP256GM304T-I/PT
DSPIC33EP256GM304T-I/PT - 16-bit 70 MIPS DSC 256KB Flash | Microchip
The Microchip Technology DSPIC33EP256GM304T-I/PT is a 16-bit digital signal controller (DSC) from the dsPIC33EP family delivering 70 MIPS performance, 256KB (85.5K x 24) of Flash program memory and 16KB of RAM, housed in a 44-pin TQFP (10x10x1 mm) surface-mount package supplied in tape-and-reel format.
A digital signal controller combines the computational strengths of a microcontroller (MCU) with the DSP capability of a digital signal processor in a single core. Within the power-management hierarchy, the dsPIC33EP family sits in the broader category of embedded microcontrollers and digital signal processors, targeting control loops that require both fast multiply-accumulate arithmetic and rich on-chip peripherals. The 16-bit Harvard-architecture dsPIC DSC core executes most instructions in a single cycle, making deterministic real-time control practical.
Key features of this device include 12 channels of Motor Control PWM (MCPWM), 8 input capture and 8 output compare channels, two quadrature encoder interfaces (QEI), four on-chip operational amplifiers, a Charge Time Measurement Unit (CTMU) for capacitive touch and precision timing, and a Peripheral Trigger Generator (PTG) for autonomous peripheral sequencing. These peripherals dramatically offload the CPU in motor-control and digital-power applications.
Technically, the device operates from a 3.0V to 3.6V supply at up to 70 MIPS (60 MHz internal clock, two instructions per clock via PLL), with the -I temperature grade covering -40C to +85C. The CMOS process, integrated DSP engine (single-cycle MAC, dual operand fetch), and zero-overhead loop support enable efficient execution of PID filters, transforms, and sensor-fusion algorithms. Five 16-bit timers, multiple UART/SPI/I2C serial ports, and a 10/12-bit ADC with simultaneous multi-channel sampling complete the signal chain.
Typical applications include BLDC and PMSM motor drives, digital power supplies (LLC, totem-pole PFC), induction heating, sensor signal conditioning using the four on-chip op-amps, and general-purpose embedded control requiring DSP math.
When designing with this part, budget the ADC sampling and PWM dead-time configuration early, as the rich MCPWM module offers many timing modes; also ensure 0.1uF decoupling on every VDD/VSS pair for the 70 MIPS core.
This page synthesizes distributor pricing, drop-in same-family alternatives, and practical design notes not found in the manufacturer datasheet alone.
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