Features
CPU and On-Chip Memory
• ESP8685H4 embedded, 32-bit RISC-V singlecore processor, up to 160 MHz
• 384 KB ROM
• 400 KB SRAM (16 KB for cache)
• 8 KB SRAM in RTC
• 4 MB flash in chip package
Wi-Fi
• IEEE 802.11 b/g/n-compliant
• Center frequency range of operating channel: 2412 ~ 2484 MHz
• Supports 20 MHz, 40 MHz bandwidth in 2.4 GHz band
• 1T1R mode with data rate up to 150 Mbps
• Wi-Fi Multimedia (WMM)
• TX/RX A-MPDU, TX/RX A-MSDU
• Immediate Block ACK
• Fragmentation and defragmentation
• Transmit opportunity (TXOP)
• Automatic Beacon monitoring (hardware TSF)
• 4 × virtual Wi-Fi interfaces
• Simultaneous support for Infrastructure BSS in Station mode, SoftAP mode, Station + SoftAP mode, and promiscuous mode
Note that when ESP8685 family scans in Station mode, the SoftAP channel will change along with the Station channel
• 802.11mc FTM
Bluetooth®
• Bluetooth LE: Bluetooth 5, Bluetooth mesh
• Speed: 125 Kbps, 500 Kbps, 1 Mbps, 2 Mbps
• Advertising extensions
• Multiple advertisement sets
• Channel selection algorithm #2
• Internal co-existence mechanism between Wi-Fi and Bluetooth to share the same antenna