GigaDevice is an active fabless semiconductor maker (NOR/NAND flash and the GD32 ARM Cortex-M microcontroller families, a popular STM32 alternative) headquartered in Beijing, China. GigaDevice Semiconductor Inc. holds IEEE MA-L block E0:05:1C. Flash memory and general-purpose MCUs are not commonly network-MAC-bearing parts — devices built on a GD32 MCU that add Ethernet or Wi-Fi derive their MAC from the SoC, PHY, or radio vendor (for example Realtek or Espressif) rather than from GigaDevice. The OUI exists and is canonically registered, but is rarely seen in the wild because GigaDevice's products are silicon components, not standalone networked devices. For triage, a GD32-based device's network MAC belongs to its host radio/PHY vendor.
- IEEE assignment
- "GigaDevice Semiconductor Inc." [Confirmed] — IEEE oui.csv
- Registry / block size
- MA-L [Confirmed] — IEEE oui.csv
- HQ / country
- Beijing, China [Confirmed] — gigadevice.com
- Company status
- active fabless semiconductor maker (NOR/NAND flash, GD32 MCUs) [Confirmed] — gigadevice.com
- Device types
- GD32 ARM Cortex-M microcontrollers (a popular STM32 alternative), NOR/NAND flash — not commonly network-MAC-bearing parts [Confirmed] — gigadevice.com
- Notable products
- GD32 MCU families; SPI NOR / NAND flash
- Verified prefix(es)
- E0:05:1C [Confirmed] — IEEE oui.csv
- Special note
- GigaDevice holds MA-L E0:05:1C. Its flash/MCU parts are not commonly MAC-bearing; a GD32-based device with Ethernet/Wi-Fi derives its MAC from the SoC/PHY/radio vendor (e.g., Realtek/Espressif) rather than from GigaDevice. The IEEE registry publishes no assignment dates, so none is stated here. [Confirmed]
- Related vendors
- host SoC/PHY/radio vendors (Realtek, Espressif, etc.) whose OUIs appear on GD32-based devices
- Analyst note
- A GD32-based device's network MAC belongs to its host radio/PHY vendor; the GigaDevice OUI (E0:05:1C) exists but is rarely seen in the wild because GigaDevice produces silicon components rather than standalone networked devices.