- The technical characteristics of the boards are as follows:
- Processor: Xtensa Dual-Core 32-bit LX6 clocked up to 240 MHz
- Wi-Fi (802.11b /g/n) and Bluetooth 4.2 / BLE
- RAM: 520 KB of internal SRAM and 4 MB of external PSRAM
- 4 MB of Flash (external)
- Different states to limit energy consumption (Modem Sleep, Light Sleep, Deep Sleep, Hibernation)
- Hardware cryptographic acceleration for AES, RSA, SHA2
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