User's Manual

SIM900E Document
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2. Detail Block Diagram
Figure 4: Block diagram of SIM900E
3. Electrical and Reliability Characteristics
3.1. Absolute Maximum Ratings
The absolute maximum ratings stated in following table are stress ratings under non-operating conditions. Stresses
beyond any of these limits will cause permanent damage to SIM900E .
Table 1: Absolute maximum ratings
Symbol Parameter Min Typ Max Unit
VBAT Power supply voltage - - 5.5 V
V
I
*
Input voltage -0.3 - 3.1 V
I
I
*
Input current - - 10 mA
I
O
*
Output current - - 10 mA
*
These parameters are for digital interface pins, such as keypad, GPIO, I
2
C, UART, LCD and DEBUG.