Sim_Vdd Characteristics; Vrtc Characteristics; Current Consumption (Vbat = 3.8V) - SimCom SIM900B Hardware Design

Table 17: SIM card 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
4.5

SIM_VDD Characteristics

Table 18: SIM_VDD characteristics
Symbol Parameter
V Output voltage
O
I Output current
O
4.6

VRTC Characteristics

Table 19: VRTC characteristics
Symbol Parameter
V VRTC input voltage
RTC-IN
I VRTC input current
RTC-IN
V VRTC output voltage
RTC-OUT
I VRTC output current
RTC-OUT
4.7

Current Consumption (VBAT = 3.8V)

Table 20: Current consumption
Symbol Parameter
I VRTC current
VRTC
I VBAT current
VBAT
SIM900B_Hardware Design_V2.01
Min
-10
-10
1.4
2.4
-
1.7
2.7
-
-
Min
2.75
1.65
-
Min
2.00
-
-
-
Conditions
VBAT disconnects. Backup battery is 3 V
Power down mode
Sleep mode BS-PA-MFRMS=9
35
Smart Machine Smart Decision
Typ Max
- 10
- 10
- -
- -
- 0.4
2.4
- -
- -
- 0.1
- 0.1
Typ Max
2.9 3.00
1.80 1.95
- 10
Typ Max
3.00 3.15
2 -
3.00 -
10 -
Value
2
30
1.0
Unit
uA
uA
V
V
V
V
V
V
V
V
Unit
V
mA
Unit
V
uA
V
uA
Unit
uA
uA
mA
2012-05-07