User's Manual

Smart Machine Smart Decision
SIM5360A_User_Manual_V1.03 2014-07-03
33
Table 11: Electronic characteristic
Symbol Parameter
Min Typ Max Unit
VDD_EXT LDO power output
2.71 2.85 2.99 V
V
IH
High-level input voltage
0.65·VDD_EXT - VDD_EXT+0.3 V
V
IL
Low-level input voltage
-0.3 0 0.3·VDD_EXT V
V
OH
High-level output voltage
2.71 2.85 2.99
V
V
OL
Low-level output voltage
0 0 0.45 V
3.4.2 Design guide
The module provides a LDO named VDD_EXT for SD card power supply. The LDO is 2.85V by default,
capable of 300mA. Data lines should be pulled up to VDD_EXT by 10K resistors. ESD/EMI components
should be arranged beside SD card socket. Refer to the following application circuit.
Figure 21: SD interface circuit
3.5 USIM Interface
The USIM provides the required subscription verification information to allow the mobile equipment to
attach to a GSM or UMTS network. Both 1.8V and 3.0V SIM Cards are supported.
3.5.1 Pin description
Table 12: Pin description
VDD_EXT
44 SD card power