Users Manual

LTE Standard Module Series
EC200T Series Mini PCIe Hardware Design
EC200T_Series_Mini_PCIe_Hardware_Design 25 / 54
USIM_VDD
GND
USIM_RST
USIM_CLK
USIM_DATA
USIM_DET
100 nF
GND
GND
33 pF 33 pF 33 pF
VCC
RST
CLK
IO
VPP
GND
GND
USIM_VDD
15K
(U)SIM Card Connector
Module
0R
0R
0R
Figure 4: Reference Circuit of (U)SIM Interface with an 8-pin (U)SIM Card Connector
If (U)SIM card detection function is not needed, please keep USIM_DET unconnected. A reference circuit
for (U)SIM interface with a 6-pin (U)SIM card connector is illustrated in the following figure.
USIM_VDD
GND
USIM_RST
USIM_CLK
USIM_DATA
0R
0R
0R
100 nF
GND
33 pF 33 pF 33 pF
VCC
RST
CLK IO
VPP
GND
GND
15K
USIM_VDD
(U)SIM Card Connector
Module
Figure 5: Reference Circuit of (U)SIM Interface with a 6-pin (U)SIM Card Connector
In order to enhance the reliability and availability of the (U)SIM card in customers’ applications, please
follow the criteria below in (U)SIM circuit design: