Hardware Design V1.00
Table Of Contents
- Version History
- 1. Introduction
- 2. SIM2000S Overview
- 3. Package Information
- 4. Application Interface
- 4.1. Power Supply
- 4.2. Power on/down Scenarios
- 4.3. Power Saving Mode
- 4.4. Serial Port and Debug Interface
- 4.5. RI behaviors
- 4.6. Audio Interfaces
- 4.7. RUIM Card Interface
- 4.8. PCM Interface
- 4.9. Keypad Interface
- 4.10. I2C Bus
- 4.11. General Purpose Input/Output (GPIO)
- 4.12. ADC
- 4.13. PWM
- 4.14. Network Status Indication
- 4.15. NETLIGHT Multiplexing Function
- 4.16. Operating Status Indication
- 4.17. Antenna Interface
- 5. PCB Layout
- 6. Electrical, Reliability and Radio Characteristics
- 7. Manufacturing
- 8. Appendix
Smart Machine Smart Decision
Figure 8: Powered on/down module using transistor
1.8V
Power
on/down logic
PWRKEY
MODULE
200K
Figure 9: Powered on/down module using button
The power on timing is illustrated as in the following figure.
Figure 10: Timing of power on module
When power on procedure is completed, SIM2000S will send following URC to indicate that the module is
ready to operate at fixed baud rate.
RDY
SIM2000S_Hardware_Design_V1.00 20 2014-02-27