Introduction
Note: DFRobot BLE4.1 Module is discontinued now.
BLE4.1 Module is DFRobot newly developed Bluetooth 4.1 transmission module, adhering to the same usage of Bluno, and increasing the star network function, KISS connection (Approach Connection). The new Bluetooth is designed based on BLE 4.1 technology. It has low power consumption and other special features. In the BLE transmission, the point-to-point output rate is 4Kbps, equivalent to the original Bluno twice the rate.
BLE4.1 Module uses DA14681 high-performance BLE chip, it integrates advanced power management system, coming with 3.7V lithium battery charging circuit. It obtains power directly from the USB port. Support 400mA maximum charge current,
BLE 4.1 Bluetooth P2P Connection
BLE 4.1 Bluetooth Star Network Connection
Features
Support BLE 4.1 master and slave switch
Support Bluetooth serial data transmission
Support Bluetooth point-to-point wireless programming
Support Bluetooth 4.1 multi-device cascade (up to 4)
Support Arduino Bluetooth library (support for multi-Bluetooth connection)
Support low power consumption Bluetooth (standby 25uA; interrupt 70uA)
Two-way interrupt wake up:
BLE4.1 wake up controller via P4_2 (high level wake up)
The controller wakes up BLE4.1 via WAKEUP (low level wake)
Support KISS connection method (Approach Connection)
Support Bluetooth firmware update
Support lithium battery powered
Support USB to charge the lithium battery
LED status indicator
Specification
Processor: DA14681 (ARM Cortex-M0 CPU)
Operating Voltage: 3.3V
USB input Voltage: 4.2V ~ 5.0V
Lithium battery powered: 3.7V
Support USB charging (chip comes with charging function)
Charging current: 10mA ~ 400mA (max)
Allow external lithium battery capacity: 20mAh ~ 500mAh (max)
Supports low power consumption: only 30uA / MHz minimum 2uA
Single I / O port maximum output current: 4.5mA
Allows I / O port maximum output total current: 100mA
Supports three network connection modes (P2P connection, star network, tree network [Developing])
Maximum number of slave connections: 4 (simultaneous connection)
Maximum transfer rate of 4Kbps
Flash: 8Mbit
64KB OTP
128KB Data SRAM
16KB Cache SRAM
128KB ROM
On-chip crystal: 16MHz, 32.768KHz
Three power management modes: Extended sleep, Deep sleep, Hibernation
29 digital I / O ports
8 analog inputs
1 SPI
2 I2C (supports 100KHz and 400KHz two communication rates)
2 UARTs
6 PWM
I2S / PCM master-slave interface
IR interface (PWM)
Support USB1.1 (computer-side simulation into a serial port)
Built-in temperature sensor
Transmit power consumption: 3.4mA (TX) 3.1mA (RX)
Operating temperature: -40 ℃ ~ +85 ℃
Dimension: 25 * 18 * 3 mm/ 0.98 * .70 * 0.11 inches
Documents
Shipping List
DFRobot BLE4.1 Module V1.0 x1
