Macronix Provides Advanced Ultra-High-Performance OctaBus Flash Memory to STMicroelectronics’ Latest STM32 Microcontrollers 512-Mbit OctaBus Memory Enables Fast Response Time, Easy Software Updates in ST’s New STM32H72x/73x, STM32L5 and STM32U5 MCU Discovery Kits, Evaluation Boards HSINCHU, Taiwan—March. 3rd, 2021 – Macronix International Co., Ltd. (TSE: 2337), a leading integrated device manufacturer in the non-volatile memory (NVM) market, today announced that STMicroelectronics (ST) is using Macronix OctaBus™ flash memory for several STM32 microcontroller (MCU) platforms, including the STM32H72x/73x, STM32L5 and the recently announced STM32U5. Macronix’s MX25 OctaBus family is providing the high-performance memory on select STM32 Discovery Kits and Evaluation Boards.