Reproduction forbidden without Fibocom Wireless Inc. written authorization - All Rights Reserved.
FIBOCOM NL668-LA Series Hardware Guide
Page 30 of 61
Figure 5-8 Network indicator light reference circuits
5.3 (U)SIM Card Interface
NL668-LA series module has built-in (U)SIM card interface, and supports 1.8V and 3.0V (U)SIM card.
5.3.1 (U)SIM Pin Definition
(U)SIM pin definition is shown in the following table:
Table 5-6 (U)SIM card pin
Pin name
I/O
Pin No.
Description
USIM_PRESENCE
I
13
Detect (U)SIM card for Hot-swap
USIM_VDD
PO
14
(U)SIM Power
USIM_DATA
IO
15
(U)SIM DATA
USIM_CLK
O
16
Clock Signal
USIM_RESET
O
17
Reset Signal
5.3.2 (U)SIM Interface Circuit
5.3.2.1 (U)SIM Card Connector with Card Detection Signal
(U)SIM circuit design requires use (U)SIM card connector, recommend chose with card detect signal that
support card hot swap function (Fibocom recommend: SIM016-8P-220P).