Performance parameter .Core: 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 3.6 V Up to 45 GPIOs 2*12-bit ADC (up to 20 channels) Communication interfaces 212C interfaces 2 12S interface 4 SPI interfaces 3 UART interfaces 1 USB OTG interface Security: 4096 bit OTP AES, SHA, RSA, ECC, RNG Secure Boot, Flash Encryption, Digital signature, HMAC module Extended temperature range:-40 to 65ºC