NXP 恩智浦MK28FN2M0x: 150MHz Cortex-M4F 2MB Flash (BGA & WLCSP)
Kinetis K28F MCU Sub-Family Kinetis K28F MCU Sub-Family High performance ARM? Cortex?-M4 MCU with 2 MB Flash, 1 MB SRAM, 2 USB Controllers (High-Speed and Full- Speed), S
DRAM controller, QuadSPI