This chart shows the current STM32 portfolio. It is composed of devices belonging to one of four product lines: the Performance line, featuring a 72MHz core, advanced peripherals, and a USB and CAN device; the Access Line, featuring a 36MHz core; the USB Access Line, featuring a 48MHz core and USB Device; and the new connectivity line, with its 72MHz core and its advanced connectivity peripherals. Within each series, the devices are available with various memory density configurations of 16kB to 512kB. Finally, devices are available in various packages from a 36-pin QFN up to a 144-pin LQFP, or BGA for I/O intensive applications. All devices within the same package are pin-to-pin compatible. In all, over 70 part numbers are now available which makes the STM32 an extensive product family that optimizes development and certification costs.