MeiG
Product
Manual
of
SLM750
Module
SLM750
Module
Hardware
Design
Page 40, total 84 pages
Figure 13Reset timing of RESET_N
3.8.2 AT command reset
Enter AT+RESET command in SLM750VUART or USB AT interface to reset and restart
SLM750.
3.9 USIM/SIM Card Interface
USIM card interface meets ETSI and IMT-2000 SIM interface requirements. Both 1.8V and
3.0V USIM cards are supported by SLM750
Table 9: USIM/SIM card interface description
Pin name
Pin number
I/O
Description
Note
USIM_DATA
15
IO
USIM card data
signal
USIM_CLK
16
DO
USIM card clock
signal
USIM_RST
17
DO
USIM card reset
signal
USIM_VDD 14
PO USIM
card
power supply
Support 1.8V and
3.0V USIM card
USIM_PRESENCE 13
DI
USIM card plug
detection
Require to pull up
to1.8V
GND 10
-
