The ST7260xx is an STMicroelectronics low speed USB 8-bit MCU family with high density Flash (HDFlash), FastROM with readout and write protection, in-application programming (IAP) and in-circuit programming (ICP), 384 bytes RAM memory (128-byte stack), 12 or 24 MHz oscillator, RAM Retention mode, optional low voltage detector (LVD) and other features.