The ST Cortex-M portfolio is shown on this slide. STM32 is the brand name of the ST Cortex family. Beginning in the upper left is the L1 series which is a low power series. Next, proceeding counter-clockwise is the F1 series which is ST’s families of introductory products for Cortex-M3. The F2 and F4 series offer a higher feature set and higher speed capability in the same family of devices.