DSPIC33EP128GS702-E/MM
DSPIC33EP128GS702-E/MM - 16-bit DSC 70 MIPS 128KB Flash | Microchip
The Microchip Technology DSPIC33EP128GS702-E/MM is a 16-bit Digital Signal Controller (DSC) delivering 70 MIPS performance with 128KB (43K x 24) of Flash program memory and 8KB of RAM, housed in a 28-pin QFN-S package measuring 6x6x0.9 mm with an exposed pad for improved thermal and ground performance.
A Digital Signal Controller combines the compute architecture of a microcontroller with the numeric acceleration of a digital signal processor. In the power-management hierarchy, the dsPIC33EP GS family sits at the heart of digital power-conversion systems, replacing analog control loops with firmware-driven control implemented through interconnected high-speed PWM modules, high-speed ADCs, programmable gain amplifiers (PGA), and analog comparators.
Key features include the interconnected high-speed PWM peripheral designed specifically for switch-mode power supply (SMPS) topologies, a high-speed 10/12-bit ADC capable of sampling multiple channels in tight control-loop timing windows, integrated PGA and comparators that reduce external analog component count, and a 16-bit modified Harvard DSP core with a barrel shifter, DSP multiply-accumulate instructions, and 24-bit wide program memory.
The -E suffix denotes an extended automotive-grade operating temperature range of -40C to +125C, and the device carries AEC-Q100 qualification, making it suitable for automotive and other harsh-environment designs. The 3.3V CMOS device offers 7 timers, 4 external interrupts, boundary scan, and multiple low-power modes. This specific family, dsPIC33EPXXXGS70X/80X, is documented by Microchip as 16-Bit Digital Signal Controllers for Digital Power Applications with Interconnected High-Speed PWM, ADC, PGA and Comparators.
Typical applications include AC-DC power supplies, power factor correction (PFC) stages, DC-DC converters, solar inverters, battery chargers, LED drivers, and digital lighting ballasts where deterministic closed-loop control at tens to hundreds of kHz is required.
When designing, allocate the exposed thermal pad to a solid ground plane and ensure ADC/PWM interconnect scheduling matches your control-loop bandwidth; the peripherals are interconnected by design, but loop timing must still be budgeted in firmware.
This page synthesizes distributor inventory and pricing context, drop-in family alternatives, and practical design notes not found in the manufacturer datasheet, with pricing referenced as of 2026-09-23.
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