Introduction
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,
Feature
- 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
Layout
NOTE: VBUS and GND are USB Power port; BAT and BAT- are battery power port.
Dimension
- Dimension: 25 × 18 x 3 mm
