SIM8300G-M2 Hardware Design V1.01 Draft

SIM8300G-M2 Hardware Design V1.01
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Figure 17: (U)SIM interface reference circuit
When the (U)SIM card is inserted, the (U)SIM_DET will change from high to low level. The falling edge will
indicate insertion of the (U)SIM card. When the (U)SIM card is removed, the (U)SIM_DET will change from
low to high level. This rising edge will indicate unplug the (U)SIM card.
The SIM card hot swap function needs to be enabled by AT. Please refer to the SIM8200 Series_AT
Command Manual for the setting of the detection level of (U)SIM_DET pin.
Table 22: Definition of (U)SIM interface
Pin name
Pin no.
Electrical
description
Description
Comment
(U)SIM1_PWR
36
PO
Power supply for (U)SIM1 card
1.8/3.0V voltage
domain, all
(U)SIM interfaces
should be
protected against
ESD.
If unused, please
keep open
(U)SIM 1_DATA
34
DIO
(U)SIM1 card data, which has
been pulled up to (U)SIM1_VDD
via a 20KR resistor internally
(U)SIM 1_CLK
32
DO
(U)SIM1 clock signal
(U)SIM1_RESET
30
DO
(U)SIM1 Reset control
(U)SIM 1_DET
66
DI
(U)SIM1 card detect, which has
been pulled up to VDD_P3 via a
470KR resistor internally
The following table shows recommended TVS of ESD protect and (U)SIM socket.
Table 23: Recommended TVS and (U)SIM socket list
Name
Manufacturer
Part number
TVS
ST
ESDA6V1-5W6
(U)SIM socket
Suntech
XNT-0211BAAG06A
If the (U)SIM card hot-swap function is not used, customers can keep the (U)SIM_DET pin open.