As can be expected from a ‘smart’ alarm clock it has 2.4 GHz WiFi connectivity ... which seems to always get loaded into the external octal SPI RAM before execution, as per the boot sequence ...

A serial clock line (SCK) synchronizes shifting and sampling of information on four serial data lines. In the Single SPI mode, data is simultaneously transmitted and received, while in DUAL, QUAD and ...

The DFSPI is a fully configurable SINGLE, DUAL, QUAD and OCTAL SPI master/slave device, which allows user to configure polarity and phase of serial clock signal SCK. As an option, the DFSPI ... The CC ...