AT-09 BLE 4.0 Bluetooth Module

Description

The AT-09 is a module that contains a BLE chip (a CC2540/CC2541). This module allows to perform serial communication with the BLE chip thanks to an Rx and a Tx pin. This module is also very similar to the HM-10 module and is also compatible with it.

Features:

Bluetooth protocol: Bluetooth Specification V4.0 BLE, no byte limit for sending and receiving, 110m ultra-long-distance communication in an open environment and iphone4s
Operating frequency: 2.4GHz ISM band Modulation method: GFSK (Gaussian Frequency Shift Keying)
Sensitivity: ≤-84dBm at 0.1% BER
Transmission rate: Asynchronous: 6 kbps Synchronous: 6 kbps
Security features: Authentication and encryption
Support Services: Central & Peripheral UUID FFE0, FFE1
Power consumption: Under the automatic sleep mode, the standby current is 400uA~1.5mA, and 8.5mA during transmission.
Power Supply: +3.3VDC 50mA
Appearance size: 26.9mm x 13mm x 2.2mm
Bluetooth Certification: ROHS REACH BQB

Pins:

VCC: +3.3V Power
GND: Ground pin
TXD: Transmit Serial Data
RXD: Receive Serial Data
STATE: Allows you to know current module connection state. The STATE pin is normally LOW and goes HIGH when the device is connected.
EN (able): Allows you to enable or disable the module