Data Sheet

SHENZHEN FIRST TECHNOLOGY CO.,LTD FST50_04E WIFI DataSheet
http：// www.fst-tech.com
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1.product description
FST50_04E is a highly integrated, high-performance, low-cost WIFI module developed by the ASR5502A
chip. The ASR5502A integrates a radio frequency transceiver, 802.11 PHY + MAC, ARM Cortex-M4F, API
interface, real-time counter (RTC) and complete power management circuit. The chip also provides a
complete software solution, such as RTOS / TCPIP / SSL / MQTT / WIFI / AT and so on. Customers simply
develop applications and bring them to market. Therefore, ASR5502A provides a small form factor
solution for IoT applications (such as smart lighting, security, remote control, home appliances, etc.),
using the minimum external components to provide unlimited possibilities for WiFi functionality to be
embedded in other systems.
The chip itself has a complete WLAN networking function based on the 802.11b / g / n protocol, which
can be used as a slave application using the SDIO interface, or as a stand-alone IoT application with
Supplicant / HostAP / Sniffer mode.
FST50_04E
1.1 Feature

Integrated T/R switch and RF balun, no need of off-chip matching network

Support 802.11 b/g/n compatible WLAN

Support 802.11e QoS enhancement (WMM)

Support 802.11i (WPA/WPA2 PSK), Open/WEP/ TKIP/CCMP
 Support power saving mechanism
 Integrated DCDC and LDO, no need of off-chip PMU device
 Support single supply input, range from 3.3V~5V
 UART/ SPI/ I2C/ PWM/ Timer
 Generic AUXADC x8 Channels
 Support Watchdog/RTC/OTA