ESP8685 Datasheet UltraLowPower SoC with RISCV SingleCore CPU Supporting IEEE 802.11b/g/n (2.4 GHz WiFi) and Bluetooth 5 (LE) 2 MB flash embedded in the 44 mm QFN package Preliminary v0.5 Espressif Systems Copyright 2021 www.espressif.comProduct Ove rview ESP8685 is an ul tra-low-power and highly-integrated MCU-based SoC solution that supports 2.4 GHz W i-Fi and Bluetooth Low Energy (Bluetooth LE). It has: A complete W i-Fi subsystem that complies with SPI, and QPI interfaces that allow connection to IEEE 802.11b/g/n protocol and supports Station exter nal flash mode, SoftAP mode, SoftAP + Station mode, Reliable security features ensured by and promiscuous mode Cryptographic hardware accelerators that A Bluetooth LE subsystem that supports features support AES-128/256, Hash, RSA, HMAC, of Bluetooth 5 and Bluetooth mesh digital signature and secure boot State-of-the-art power and RF performance Random number generator 32-bit RISC-V single-core processor with a Permission control on accessing inter nal four-stage pipeline that operates at up to 160 memory, exter nal memory, and peripherals MHz Exter nal memory encryption and decryption 400 KB of SRAM (16 KB for cache) and 384 KB Rich set of peripheral interfaces and GPIOs, ideal of ROM on the chip, and SPI, Dual SPI, Quad for various scenarios and complex applications Block Diagram Espressifs ESP8685 Wi-Fi + BLE SoC Main CPU JTAG Wireless MAC and RF Baseband ROM BLE 5.0 RF receiver Wi-Fi MAC link RISC-V controller 32-bit Clock Cache Microprocessor generator Wi-Fi BLE 5.0 baseband baseband SRAM RF transmitter Peripherals and Sensors RTC Switch 2MB ash I2C PMU RTC memory Balun SPI I2S GPIO UART Cryptographic Hardware Acceleration LED PWM ADC SHA RSA TWAI Timers AES RNG HMAC Digital signature RMT GDMA USB Temperature XTS-AES-128 ash encryption Serial sensor Figure 1: Block Diagram Espressif Syste ms 1 ESP8685 Datasheet v0.5 Submit Documentation Feedback