Espressif Systems ESP32-S2-WROOM User Manual page 17

8. MAC Addresses and eFuse
8.
MAC Addresses and eFuse
The eFuse in ESP32-S2 has been burnt into 48-bit mac_address. The actual addresses the chip uses in station
and AP modes correspond to mac_address in the following way:
• Station mode: mac_address
• AP mode: mac_address + 1
There are seven blocks in eFuse for users to use. Each block is 256 bits in size and has independent write/read
disable controller. Six of them can be used to store encrypted key or user data, and the remaining one is only used
to store user data.
Espressif Systems
16
ESP32-S2-WROOM & ESP32-S2-WROOM-I User Manual V0.5
Submit Documentation Feedback