Oslo, Norway: In a joint effort between Energy Micro and Pervasive Displays Inc. (PDI), and aided by Energy Micro’s Taiwanese partner Retronix, the companies crafted a reference design platform to help optimise e-paper display (EPD) designs. The project combines Energy Micro’s low-power MCUs with PDI’s EPDs.
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PDI’s EPDs for industrial and commercial applications require power only when updating the display, while the EFM32 Gecko series draws 180µA/MHz at 3V in active mode and down to 20nA at 3V in shut-off mode.
The EFM32 series also delivers the processing power needed to quickly refresh the EPD display. The “EPD-On SK2” reference design uses the standard EFM32 Gecko starter kit (STK) to handle waveform library functions and image transmission via a USB and UART bridge. It also drives the electrophoretic display’s chip-on-film controller, and displays the optimised result. A USB or CR2032 coin cell battery powers the complete reference design.
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