Electrical, Reliability And Radio Characteristics; Absolute Maximum Ratings; Recommended Operating Conditions; Digital Interface Characteristics - SimCom SIM900D Hardware Design

5 Electrical, Reliability and Radio Characteristics

5.1

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 SIM900D.
Table 17: Absolute maximum ratings
Symbol Parameter
VBAT Power supply voltage
*
V Input voltage
I
*
I Input current
I
*
I Output current
O
*
These parameters are for digital interface pins, such as GPIO, UART, LCD, PWM and DEBUG.
5.2

Recommended Operating Conditions

Table 18 : Recommended operating conditions
Symbol Parameter
VBAT Power supply voltage
T Operating temperature
OPER
T Storage temperature
STG
5.3

Digital Interface Characteristics

Table 19: Digital interface characteristics
Symbol Parameter
I High-level input current
IH
I Low-level input current
IL
V High-level input voltage
IH
V Low-level input voltage
IL
V High-level output voltage
OH
V Low-level output voltage
OL
* These parameters are for digital interface pins, such as GPIO,, UART, LCD, PWM and DEBUG.
5.4

SIM Card Interface Characteristics

SIM900D_Hardware Design_V2.02
Min Typ
- -
-0.3 -
- -
- -
Min Typ
3.2 4.0
-40 +25
-45
Min Typ
-10 -
-10 -
2.4 -
- -
2.7 -
- -
41
Smart Machine Smart Decision
Max Unit
5.5 V
3.1 V
10 mA
10 mA
Max Unit
4.8 V
+85
℃
+90 ℃
Max Unit
10 uA
10 uA
- V
0.4 V
- V
0.1 V
2012-05-07