Quectel EC200U Series Hardware Design page 44

USIM_DET 13
USIM_GND 10
Table 13: Pin Definition of (U)SIM2 Interface
Pin
Pin Name
No.
USIM2_VDD 128
AP_READY 2
WAKEUP_IN 1
W_DISABLE# 4
SLEEP_IND 3
The module supports (U)SIM card hot-plug via the USIM_DET, and both high and low level detections are
supported. By default, the function is disabled, and it can be enabled by AT+QSIMDET. Please see
document [2] for more details about the AT+QSIMDET.
The following figure shows a reference design for (U)SIM interface with an 8-pin (U)SIM card connector.
USIM_GND
USIM_VDD
USIM_RST
Module
USIM_CLK
USIM_DET
USIM_DATA
Figure 17: 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.
EC200U_Series_Hardware_Design
DI (U)SIM card hot-plug detect
(U)SIM card GND
I/O Description
PO (U)SIM2 card power supply
DIO (U)SIM2 card data
DO (U)SIM2 card clock
DO (U)SIM2 card reset
DI (U)SIM2 card hot-plug detect
VDD_EXT USIM_VDD
51K
0R
0R
0R
33 pF 33 pF 33 pF
1.8 V power domain.
If unused, keep it open.
Comment
The (U)SIM2 function is optional. If
the firmware version of the module
supports the function of the
(U)SIM2 card, the relevant
functions of the (U)SIM2 card can
be realized by multiplexing
AP_READY, WAKEUP_IN,
SLEEP_IND, and W_DISABLE#
pins. For details, please consult
Quectel Technical Supports.
10 K
100 nF
GND GND
LTE Standard Module Series
(U)SIM Card Connector
VCC GND
RST VPP
Switch
IO
CLK
GND
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