Usim Interface - Quectel NB-IoT Module Series Hardware Design

3.10. USIM Interface

The module provides a USIM interface compliant to ISO/IEC 7816-3, enabling the module to access to
external USIM cards.
The external USIM card is powered by an internal regulator in the module and supports 1.8V power
supply.
Table 11: Pin Definition of USIM Interface
Pin Name Pin No.
SIM_VDD 14
SIM_CLK 13
SIM_DATA 11
SIM_RST 12
SIM_GND 10
A reference circuit design for USIM interface with a 6-pin USIM card connector is illustrated below.
Module
Figure 19: Reference Circuit for USIM Interface with a 6-pin USIM Card Connector
For more information
http://www.molex.com.
In order to enhance the reliability and availability of USIM card in application, please follow the criteria
below in USIM circuit design:
BC66_Hardware_Design
Description
Power supply for USIM card
Clock signal of USIM card
Data signal of USIM card
Reset signal of USIM card
Specified ground for USIM card
SIM_GND
SIM_VDD
SIM_RST
22R
SIM_CLK
22R
10K
22R
SIM_DATA
33pF33pF 33pF
of USIM card connector,
Comment
Voltage accuracy: 1.8V± 5%.
Maximum supply current: about 60mA.
100nF
33pF
TVS
GND GND
please visit
NB-IoT Module Series
BC66 Hardware Design
USIM Card Connector
VCC GND
RST VPP
CLK IO
http://www.amphenol.com or
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