DFRobot BLE4.1 Module

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.

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

• Product wiki
• More Documents