Schematic

EPD Driving Circuit

Your EPD should connect with 24-pins (J1) of ZIF connector.

Flash memory

Info

The U2 is not populated (NC). If you would like to use other memory chip (e.g. SRAM or FRAM or larger Flash), you could populate the chip on U2 and control by the FLASH_CS_S slave pin to work with this chip.

Peripherals

Accelerometer

Thermometer and Hygrometer

LED

NFC

Button

Power

Test Points/Interface

90-degree header for external interfacing

Test points for J2 header