User's Manual

3. Block Diagram
Bluetooth Radio
 On-chip balun (50Ω impedance in TX and RX modes)
 No external trimming is required in production
 Qualified to Bluetooth v5.0 LE specification
 -95dBm (1M) receiver sensitivity in LDO mode
 Integrated channel filters
 Digital demodulator for improved sensitivity and co-channel rejection
 Real time digitized RSSI
 Fast AGC for enhanced dynamic range
Bluetooth Controller
 All device classes support (Broadcaster, Central, Observer, Peripheral)
 All packet types (Advertising / Data / Control)
 Encryption (AES / CCM)
 Bit stream processing (CRC, Whitening)
 Frequency hopping calculation
 Supports power down of the baseband during the protocol’s idle periods
Peripheral Interfaces
 UART port for Debugging and AT Commands
 IIC interface to support external EEPROM or other devices (like G-SENSOR)
 One more SPI interface to support other device (like OLED controller)
 Up to 17 general purpose IOs (17 IOs can be set in interrupt mode)
 General purpose 10-bits ADC used for ADKey and other analog input
 PWM controller
 Hardware LED controller
 General purpose programmable timer for various task