WIFI Module
FC10 EVB User Guide
FC10_EVB_User_Guide Confidential / Released 17 / 28
Table 5: Pin Assignment of J502
The SD card detection function of EC20 module is under development.
3.4. USIM Card Interface
The FC10 EVB has a USIM card interface. A suitable USIM card (3V or 1.8V) is required to start the EC20
module. Figure 10 shows the simplified interface schematic for J503.
USIM card holder
USIM_VDD
USIM_CLK
USIM_DATA
USIM_RST
USIM_GND
U201
J503
C1
C7
C2
C3
Push-Push
USIM_VDD
USIM_DATA
USIM_RST
USIM_CLK
14
15
16
17
USIM_PRE.
GND
USIM_PRESENCE
13
CD2
CD1
GND
C5
VPP
C6
Figure 10: Simplified USIM Card Interface Schematic
J502 Pin
Signal Name
I/O
Description
1
DATA2
I/O
Data line 2
2
CD/DATA3
I/O
Card detect/data line 3
3
CMD
I/O
Command/response
4
VDD
P
Supply voltage
5
CLK
Clock
6
VSS
GND
Ground
7
DATA0
I/O
Data line 0
8
DATA1
I/O
Data line 1
NOTE
Quectel
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