SimCom SIM808, Проектирование аппаратного обеспечения

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SIM808_Hardware Design_V1.00 2014.03.27 55
VBAT - - 4.5 V
Peak Current 0 - 2.0 A
VBUS - - 30 V
I
I
* - - 8 mA
I
O
* - - 8 mA
*
These parameters are for digital interface pins, such as keypad, GPIO, I2C, UART, LCD and PCM.
.
6.2 Recommended Operating Conditions
Table
39
: Recommended operating conditions
Symbol Parameter Min Typ Max Unit
VBAT Power supply voltage 3.4 4.0 4.4 V
T
OPER
Operating temperature -40 +25 +85 ℃
T
STG
Storage temperature -45 +90
℃
6.3 Digital Interface Characteristics
Table 40: Digital interface characteristics
Symbol Parameter Min Typ Max Unit
I
IH
High-level input current -10 - 10 uA
I
IL
Low-level input current -10 - 10 uA
V
IH
High-level input voltage 2.4 - - V
V
IL
Low-level input voltage - - 0.4 V
V
OH
High-level output voltage 2.7 - - V
V
OL
Low-level output voltage - - 0.1 V
* These parameters are for digital interface pins, such as keypad, GPIO, I
2
C, UART, LCD, PWMs and DEBUG.
6.4 SIM Card Interface Characteristics
Table 41: SIM card interface characteristics
Symbol Parameter Min Typ Max Unit
I
IH
High-level input current -1 - 1 uA
I
IL
Low-level input current -1 - 1 uA
1.4 - - V
V
IH
High-level input voltage
2.4 - - V
- - 0.27 V
V
IL
Low-level input voltage
0.4 V
1.62 - - V
V
OH
High-level output voltage
2.7 - - V