User's Manual
Table Of Contents
- Contents
- Table Index
- Figure Index
- 0. Revision history
- 1. Introduction
- 2. Product concept
- 3. Application interface
- 3.1. Pin
- 3.2. Operating modes
- 3.3. Power supply
- 3.4. Power on and down scenarios
- 3.5. Power saving
- 3.6. Summary of state transitions
- 3.7. RTC backup
- 3.8. Serial interfaces
- 3.9. Audio interfaces
- 3.10. SIM card interface
- 3.12. Behaviors of the RI
- 3.13. Network status indication
- 3.14. Operating status indication
- 4. Antenna interface
- 5. Electrical, reliability and radio characteristics
- 6. Mechanical dimensions
- 7. Storage and Manufacturing
- Appendix A: GPRS coding schemes
- Appendix B: GPRS multi-slot classes
M95 Hardware Design
M95_HD_V1.0 - 62 -
5. Electrical, reliability and radio characteristics
5.1. Absolute maximum ratings
Absolute maximum ratings for power supply and voltage on digital and analog pins of module are
listed in the following table:
Table 24: Absolute maximum ratings
Parameter
Min
Max
Unit
VBAT
-0.3
+4.73
V
Peak current of power supply
0
2
A
RMS current of power supply (during one TDMA- frame)
0
0.7
A
Voltage at digital pins
-0.3
3.3
V
Voltage at analog pins
-0.3
3.0
V
Voltage at digital/analog pins in POWER DOWN mode
-0.25
0.25
V
5.2. Operating temperature
The operating temperature is listed in the following table:
Table 25: Operating temperature
Parameter
Min
Typ
Max
Unit
Normal Temperature
-35
25
80
℃
Restricted Operation
1)
-40 ~ -35
80 ~ 85
℃
Storage Temperature
-45
+90
℃
1) When the module works above temperature range, the deviations from the GSM specification
may occur. For example, the frequency error or the phase error will be increased.
5.3. Power supply ratings
Table 26: The module power supply ratings
Parameter
Description
Conditions
Min
Typ
Max
Unit
VBAT
Supply
voltage
Voltage must stay within the
min/max values, including
voltage drop, ripple, and spikes.
3.3
4.0
4.6
V