Specifications

DX-BT24-S MODULE SPECIFICATION
Shenzhen DX-SMART Technology Co., Ltd. www.szdx-smart.com
- 16 -
2.6.2. Universal Digital IO Port
Five general digital lO ports are defined in the module. All these IO ports can be
configured through software to realize various functions, such as button control, LED drive or
interrupt signal of the main controller, etc. Keep floating when not in use
2.6.3. I2C Interface
 Two-wire I2C serial interface composed of serial data line (SDA) and serial clock (SCL)
 Support two speeds
standard mode 0-100Kbit/s
Fast mode ≤400Kbit/s
 32-position sending and receiving FIFO depth（32x8-bit Rx & 32x 10-bit Tx)
 Support 7-bit and 10-bit addressing mode and regular call addressing mode.
The I2C interface is an internal circuit that allows communication with an external l2C
interface. The external I2C interface is an industry standard two-wire serial interface for
connecting external hardware. These two serial lines are called serial data line (SDA) and serial
clock line (SCL). The I2C module provides two data transmission rates: 100kHz in standard mode
and 400kHz in fast mode. The I2C module also has an arbitration detection function to prevent
multiple hosts from attempting to transmit data to the l2C bus at the same time.
Figure 10：IIC communication sequence diagram
2.6.4. Analog-to-digital Converter（ADC）
 Typical 10-bit dynamic ADC of 125 ns
 Maximum sampling rate was 1 Msample/s