Sim800 hardware design v1.05

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SIM800_Hardware Design_V1.05 57 2014-03-25
6.4 SIM Card Interface Characteristics
Table 41: SIM card interface characteristic
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
- - 0.36 V
V
OL
Low-level output voltage
- - 0.4 V
6.5 SIM_VDD Characteristics
Table 42: SIM_VDD characteristics
Symbol Parameter Min Typ Max Unit
- 3 -
V
O
Output voltage
- 1.80 -
V
I
O
Output voltage - - 10 mA
6.6 VDD_EXT Characteristics
Table 43: VDD_EXT Characteristics
Symbol Parameter Min Typ Max Unit
V
O
Output voltage 2.70 2.80 2.90 V
I
O
Output current - - 50 mA
6.7 VRTC Characteristics
Table 44: VRTC Characteristics
Symbol Description Min Typ Max Unit
V
RTC-IN
VRTC input voltage 2.8 V
I
RTC-IN
VRTC input current - 3 - uA
V
RTC-OUT
VRTC output voltage - 2.8 - V
I
RTC-OUT
VRTC output current - 2 mA