U)Sim Interface - Quectel UC200T-EM Hardware Design

Figure 9: Reference Circuit of RESET_N by Using Button
NOTES
1. Use RESET_N only when turning off the module by AT+QPOWD command and PWRKEY pin failed.
Ensure that there is no large capacitance on PWRKEY and RESET_N pins.
2.
Drive RESET_N to low level can only reset the baseband chip in the module, but PMIC.
3.

3.8. (U)SIM Interface

The (U)SIM interface circuitry meets ETSI and IMT-2000 SIM interface requirements. Both 1.8V and 3.0V
(U)SIM cards are supported.
Table 9: Pin Definition of the (U)SIM Card Interface
Pin Name Pin No.
USIM_VDD 14
USIM_DATA 15
USIM_CLK 16
USIM_RST 17
USIM_
13
PRESENCE
USIM_GND 10
UC200T-EM_Hardware_Design
S2
TVS
Close to S2
I/O Description
PO Power supply for (U)SIM card
IO Data signal of (U)SIM card
DO Clock signal of (U)SIM card
DO Reset signal of (U)SIM card
DI (U)SIM card insertion detection
Specified ground for (U)SIM card
UMTS/HSPA(+) Module Series
UC200T-EM Hardware Design
RESET_N
Comment
Either 1.8V or 3.0V is supported
by the module automatically.
1.8V power domain.
If unused, keep it open.
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