WT51822-S4AT Bluetooth module radio transmit and receive system module  Micro low energy Nordic  le beacon nrf51822

WT51822-S4AT nordic n51822 beacon profile: 

WT51822-S4AT is a high performance ,low power radio transmit and receive system module use Nordic BLE 4.0
nRF51822 as the controller chips. It has the smallest volume package in the industry, the size is 18.5*9.1*2.0,

suitable for most applications which pay more attention to the size. The module integrate the complete standard low
energy Bluetooth 4.0 protocol stack S100 drive. Customer's MCU is connected to the module by UART
port, it will automatically send a broadcast code after the module starts. As the master, APP device can scan and
search the broadcast from module in order to establish the connection. After success, it can conduct two-way
communication link with mobile device APP by serial port. Through UART interface, the user can exchange data or
control the communication parameters of module. The meaning of data is defined by the upper application
user. The mobile device can operate to the module through APP, the data will receive by the module and
pushed through UART MCU. After the module received a data packet from the client MCU serial port, it will
be automatically forwarded to the mobile device.

WT51822-S4AT nordic n51822 beacon features:

• CPU: nRF51822-QFAA (ARM Cortex™-M0 32 bit processor)
• Memory: 256KB flash + 16KB RAM memory
• Transparent transmission (Bridged method) easy to use and fast, no Bluetooth protocol stack
• development experience can use too.
• The user interface uses a standard UART (TTL) Interface, bidirectional data read, easy to operate.
• Supports serial AT commands, the user can modify the basic parameters like the serial port baud rate,
• name, MAC address of the module, etc.

WT51822-S4AT nordic n51822 beacon Pin Definition