Smart Machine Smart Decision
SIM5320AL_User Manual_V1.01
2014-08-20
36
3.5.2
Application Guide
It is recommended to use an ESD protection component such as ST (
www.st.com
) ESDA6V1W5 or ON
SEMI (
www.onsemi.com
) SMF05C. Note that the SIM peripheral circuit should be close to the SIM card
socket. The reference circuit of the 8-pin SIM card holder is illustrated in the following figure.
Figure 24: USIM interface reference circuit
Note: USIM_DATA has been pulled up with a 22kR resistor to V_USIM in module. A 220nF shut capacitor on V_USIM
is used to reduce interference. Use AT Commands to get information in USIM card. For more detail, please refer to
document [1].
3.5.3 Recommend Components
For 6 pins USIM socket, SIMCom recommend to use Amphenol
C707 10M006 512 2
. User can visit
http://www.amphenol.com for more information about the holder.
V_USIM
20
USIM Card Power output depends automatically on USIM mode
,
one
is 3.0V±10%, another is 1.8V±10%. Current is less than 50mA.
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