Bigger flash memory & live update, on Microchip’s DSC chips

March 03, 2017 // By Graham Prophet
Microchip Technology has expanded its series of live-updateable controllers for digital power; the dsPIC33EP128GS808 Digital Signal Controller Family now hosts up to 128 kB of Flash while enabling firmware updates to power supplies with zero down-time

The devices have up to 128 kB of dual-partition Flash memory with live update capability, advanced analog features and enhanced Core Independent Peripherals (CIPs) suitable for high-end digital power applications such as AC/DC power supplies, DC-DC converters, power inverters and advanced lighting applications.


These devices offer high-resolution pulse width modulators optimized for digital power applications, and they include advanced analogue features and peripherals. There are five separate high-speed 12-bit ADC modules each with 300 nsec conversion latency. Up to 22 input channels are shared across these five ADC units. There are also four analogue comparators, each with their own dedicated 12-bit reference DAC; and two programmable gain amplifiers to reduce external component count.



New features include a peripheral trigger generator, which is a user-programmable state machine that can respond to events faster than a firmware-driven implementation while offloading the processor for other tasks. A four-channel DMA unit is included to further increase the controller’s overall system performance. These devices also have configurable logic cells that can be used to create combinatorial PWM signals for advanced applications or to minimize the need for external glue logic. They also contain up to two CAN communication interfaces for automotive and industrial applications. Select new variants in the family of dsPIC digital signal controllers come in an 80-pin package giving designers increased memory and more interface pins.


The family is supported by Microchip’s free Digital Compensator Design Tool (DCDT), advanced SMPS libraries, evaluation platforms and reference designs which all help customers accelerate the overall process of designing their digital power supply. The dsPIC33EP128GS808 family is supported by the MPLAB ecosystem including MPLAB X Integrated Development Environment (IDE) and XC16 compiler. There are 14 parts in the dsPIC33EP128GS808 family starting at $2.50 (10,000), in TQFP, QFN and SOIC with 28-, 44-, 48-, 64-, and 80- pin variants.