User Manual

Page 3 of 9
Detail Descriptions
EC864FPA integrates Expressif’s ESP8266 Wifi SoC and Texas Instrument’s CC2640 BLE SoC to form an
integrated module to provide WLAN and BLE connectivity. Four dedicated I/Os from each SoC are connected together
for inter-chip communications (e.g. SPI).
ESP8266 SoC
ESP8266EX offers a complete and self-contained Wi-Fi networking solution; it can be used to host the
application or to offload Wi-Fi networking functions from another application processor. When ESP8266EX hosts the
application, it boots up directly from an external flash. In has integrated cache to improve the performance of the system
in such applications. Alternately, serving as a Wi-Fi adapter, wireless internet access can be added to any
microcontroller -based design with simple connectivity (SPI/SDIO or I2C/UART interface). ESP8266EX is among the
most integrated WiFi chip in the industry; it integrates the antenna switches, RF balun, power amplifier, low noise
receive amplifier, filters, power management modules, it requires minimal external circuitry, and the entire solution,
including front-end module, is designed to occupy minimal PCB area. ESP8266EX also integrates an enhanced
version of Tensilica’s L106 Diamond series 32-bit processor, with on-chip SRAM, besides the Wi-Fi functionalities.
ESP8266EX is often integrated with external sensors and other application specific devices through its GPIOs; codes
for such applications are provided in examples in the SDK.
Sophisticated system-level features include fast sleep/wake context switching for energy-efficient VoIP, adaptive
radio biasing for low-power operation, advance signal processing, and spur cancellation and radio co-existence features
for common cellular, Bluetooth, DDR, LVDS, LCD interference mitigation. For more detail information on ESP8266,
please refer to ESP8266EX : A Beginner’s Guide.