Datasheet SCT2400 (CML Microcircuits) - 8

SCT2400 Datasheet B5 PB6_KEY3 (2) I Connection for Function key B6 PD7_KEY4 (2) I Connection for Function key B7 TEST1 O Test purpose only, leave open circuit B8 TEST3 O Test purpose only, leave open circuit B9 AVSS2 P RF Ground B10 AVSS3 P RF Ground B11 VR_IN I Regulator input, connect to D8 VR_OUT B12 RFIO I/O RF Transmit output and receive input External 32.768 kHz oscillator connection to enable C1 OSC32OUT O support of an RTC function (not currently supported) C2 PE4 I/O GPIO C3 PDR_ON I Connect to VDDD C4 PB8_KEY2 (2) I Connection for Function key C5 PB5 I/O GPIO C6 PD6 I/O GPIO C7 TEST4 O Test purpose only, leave open circuit C8 AVSS4 P RF Ground C9 AVSS5 P RF Ground C10 AVSS6 P RF Ground C11 AVSS7 P RF Ground C12 AVSS8 P RF Ground D1 NRESET I Chip Reset, active low Copyright ©2019 Wuxi Sicomm Communication Technologies, Inc 8 Document Outline Datasheet Front Page Change History 1. Overview 2. Features 3. Pin Configuration 4. RF Transceiver 4.1. Transmitter 4.2. Receiver 4.3. PLL&VCO 4.4. RC Oscillator 4.5. RF Front-end circuit 5. Baseband Core 5.1. Overview 5.2. Modem 5.3. DFR Protocol Stack 5.3.1. DFR Transmitter Signal Flow 5.3.2. DFR Receiver Signal Flow 6. Programmable Function Keys 7. Control Command Protocol 8. Interface and Timing Sequence 8.1. Power Supply 8.2. Reset and Power Up Timing 8.2.1. Baseband Core Operating Frequency 8.2.2. BOOT Mode 8.3. I2S High-speed Serial Port Timing 8.4. I2C Interface 8.5. UART Interface 8.6. USB Interface 8.7. Other Interfaces 9. Battery Management 10. Specification 10.1. Recommended Operating Conditions 10.2. Power Consumption 10.3. ESD 10.4. Parameter Performance 11. Reference Schematic Diagram 12. Text messaging support 13. Package Information 14. Ordering Information Appendix A End of Document