Specifications:
Xtensa dual-core 32-bit LX7 CPU
frequency up to 240MHz
Memories:
384 KB of ROM
512 KB of SRAM
16 KB of RTCSRAM
8 MB of PSRAM
Working Voltage: 3V to 3.6V
Up to 45 GPIOs
2*12-bit ADC (up to 20 channels)
Extended Temperature Range: -40℃ to +65℃
Security 4096 bit OTP, AES, SHA, RSA, ECC, RNG
Secure Boot, Flash Encryption, Digital signature, HMAC module
Interfaces:
2 I2C interfaces
2 I2s interface
4 SPI interfaces
3 UART interfaces
1 USB OTG interface