ESP8266EX

1 Introduction

Lexin intelligent interconnection platform - ESCP has high-performance wireless SOC，Bring the gospel to mobile platform designers，It offers maximum usability at the lowest cost and offers unlimited possibilities for embedding WiFi functionality into other systems.

2 Technical Overview

The ESP8266 is a complete, self-contained Wi-Fi network solution that can host software applications or offload all Wi-Fi network functions through another application processor.The ESP8266 is capable of booting directly from an external flash memory when it is powered by an application and is the only application processor in the device.

The built-in cache helps improve system performance and reduce memory requirements.

In another case, when wireless Internet access is responsible for the task of the Wi-Fi adapter,It can be added to any microcontroller-based design.Easy to connect, just pass the SPI/SDIO interface or the central processor AHB bridge interface is sufficient.

ESP8266's powerful on-chip processing and storage capabilities,It makes it possible to integrate sensors and specific applications for other applications through the GPIO port.Minimize system resources during development and operation at the lowest pre-stage,ESP8266 high on-chip integration，Including antenna switch balun, power management converter,As a result, very few external circuits are required, and the entire solution, including the front-end modules, minimizes PCB space at design time.

The leading features of the system equipped with ESP8266 are:Energy-efficient VoIP fast switching between sleep/wake mode, adaptive radio offset for low-power operation, front-end signal processing, troubleshooting, and radio system coexistence to eliminate cellular/Bluetooth/DDR/LVDS/LCD interference.

3 characteristics

802.11 b/g/n

Wi-Fi Direct (P2P), soft-AP

Built-in TCP/IP protocol stack

Built-in TR switch, balun, LNA, power amplifier and matching network

Built-in PLL, voltage regulator and power management components

+19.5dBm output power in 802.11b mode

Built-in temperature sensor

Support antenna diversity

Power failure leakage current is less than 10uA

Built-in low-power 32-bit CPU: can double as an application processor

SDIO 2.0, SPI, UART

STBC, 1x1 MIMO, 2x1 MIMO

Aggregation of A-MPDUs, A-MSDUs, and guard intervals of 0.4?s

Wake up, connect and pass packets within 2ms

Standby power consumption is less than 1.0mW (DTIM3)

ESP8266 application body

Smart power plug

Home automation

Mesh network

Industrial wireless control

Baby monitor

Web camera 

Sensor Networks 

Wearable electronics

Wireless location aware device

Security ID tag

Wireless positioning system signal

Specification power consumption

The following power consumption data is based on a 3.3V supply, ambient temperature of 25°C, and is measured using an internal voltage regulator.

[1] All measurements are done at the antenna interface without the SAW filter.

[2] All transmit data is based on a 90% duty cycle measured in continuous emission mode.