Neoway N11 - SIM Card; Figure 3-18 RING Indicator for SMS; Figure 3-19 Reference Design of SIM Card Interface; Table 3-4 SIM Card Interfaces

N11
Hardware User Guide
Copyright © Neoway Technology Co., Ltd
22
Figure 3-18 RING indicator for SMS
35 ms
3.4 SIM Card
Table 3-4 SIM card interfaces
Pin
Signal
I/O
Function Description
Remarks
6
SIM_DATA
DI/O
SIM card data input/output
Self-adaption to 1.8V/3.0V
7
SIM_CLK
DO
SIM card clock
8
SIM_RESET
DO
SIM card reset
9
VSIM
P
SIM card power supply output
N11 provides one USIM card interface that is compatible with 1.8 V/3.0 V USIM cards. Figure 3-19
shows the connection of SIM card interface.
Figure 3-19 Reference design of SIM card interface
20 Ω
20 Ω
20 Ω
1 μF
SIM_DATA
SIM_CLK
SIM_RESET
VSIM
N11 module
CLK
RST
VCC
GND
SIM card
DATA
VPP
10 kΩ
Schematic Design Guidelines