Emakefun BLE Nano for Arduino with Wireless BLE and Micro-USB Interface,TICC2540 Chip,Compatible to Arduino Nano V3.0

The  BLE Board has a number of facilities for communicating with a computer, another Arduino, or other microcontrollers. The ATmega328P provide UART TTL (5V) serial communication, which is available on digital pins 0 (RX) and 1 (TX). An  TI CC2540 chip on the board channels this serial communication over USB and the  TI CC2540 chip drivers (included with the Arduino software) provide a virtual com port to software on the computer. The Arduino software includes a serial monitor which allows simple textual data to be sent to and from the Arduino board. The RX and TX LEDs on the board will flash when data is being transmitted via the  TI CC2540 chip and USB connection to the computer (but not for serial communication on pins 0 and 1). A SoftwareSerial library allows for serial communication on any of the Nano's digital pins. The ATmega328P also support I2C (TWI) and SPI communication. The Arduino software includes a Wire library to simplify use of the I2C bus. To use the SPI communication, please see ATmega328P datasheet. 

Microcontroller ATmega328P

TI CC2540 BLE 2.4G wireless

Architecture AVR

Operating Voltage： 5 V

Flash Memory 32 KB of which 2 KB used by bootloader

SRAM ：2 KB

Clock Speed ：16 MHz

Analog I/O Pins ：8

EEPROM： 1 KB

DC Current per I/O Pins 40 mA (I/O Pins)

Input Voltage： 7-12 V

Digital I/O Pins： 22

PWM Output： 6

Power Consumption： 19 mA

PCB Size ：48 x 19mm

Weight ：7 g