Product Info
Table Of Contents
- About the Document
- Contents
- Table Index
- Figure Index
- 1 Introduction
- 2 Product Concept
- 3 Application Interfaces
- 3.1. General Description
- 3.2. Pin Assignment
- 3.3. Pin Description
- 3.4. Power Supply
- 3.5. Turn on and off Scenarios
- 3.6. VRTC Interface
- 3.7. Power Output
- 3.8. Battery Charge and Management
- 3.9. USB Interfaces
- 3.10. UART Interfaces
- 3.11. (U)SIM Interfaces
- 3.12. SD Card Interface
- 3.13. GPIO Interfaces
- 3.14. I2C Interfaces
- 3.15. I2S Interfaces
- 3.16. SPI Interface
- 3.17. ADC Interfaces
- 3.18. LCM Interfaces
- 3.19. Touch Panel Interfaces
- 3.20. Camera Interfaces
- 3.21. Sensor Interfaces
- 3.22. Audio Interfaces
- 3.23. Emergency Download Interface
- 4 Wi-Fi and BT
- 5 GNSS
- 6 Antenna Interfaces
- 7 Electrical, Reliability and Radio Characteristics
- 8 Mechanical Dimensions
- 9 Storage, Manufacturing and Packaging
- 10 Appendix A References
- 11 Appendix B GPRS Coding Schemes
- 12 Appendix C GPRS Multi-slot Classes
- 13 Appendix D EDGE Modulation and Coding Schemes
- IC & FCC Requirement
Smart LTE Module Series
SC66 Hardware Design
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3.7. Power Output
SC66 supports output of regulated voltages for peripheral circuits. During application, it is recommended
to connect a 33pF and a 10pF capacitor in parallel in the circuit to suppress high frequency noise.
Table 10: Power Description
3.8. Battery Charge and Management
SC66 module supports a fully programmable switch-mode Li-ion battery charge function. It can charge
single-cell Li-ion and Li-polymer batteries. Switching charging with Quick Charge 3.0 and 4.0 supports up
to 3.0A. The battery charger of SC66 module supports trickle charging, pre-charge, constant current
charging and constant voltage charging modes, which optimize the charging procedure for Li-ion and
Li-polymer batteries.
Trickle charging: When the battery voltage is below 2.1V, a 45mA trickle charging current is applied
to the battery.
Pre-charge: When the battery voltage is charged up and is between 2.4V and 3.0V (the maximum
pre-charge voltage is 2.4V~3.0V programmable, 3.0V by default), the system will enter pre-charge
mode. The charging current is 500mA (100mA~1500mA programmable, 500mA by default).
Pin Name Default Voltage (V) Drive Current (mA) Idle
LDO13A_1P8 1.8 20 Keep
LDO11A_1P8 1.8 150 /
LDO3B_2P8 2.8 600 /
LDO7B_3P125 3.125 150 /
LDO14A_1P8 1.8 150 Keep
SD_VDD 2.95 600 /
SD_PU_VDD 2.95 50 /
USIM1_VDD 1.8/2.95 150 /
USIM2_VDD 1.8/2.95 150 /
VPH_PWR Equal to VBAT voltage 1000 Keep