Service Guide

LTE Standard Module Series
EC200U_Series_Hardware_Design 19 / 94
hot-plug detect
V
IL
max = 0.6 V
V
IH
min = 1.26 V
V
IH
max = 2.0 V
If unused, keep it
open.
USIM2_VDD
128
PO
(U)SIM2 card power
supply
I
O
max = 50 mA
For 1.8 V (U)SIM:
Vmax = 1.9 V
Vmin = 1.7 V
For 3.0 V (U)SIM:
Vmax = 3.05 V
Vmin = 2.7 V
Either 1.8 V or 3.0 V
can be recognized by
the module
automatically.
AP_READY
2
DIO
(U)SIM card data
For 1.8 V (U)SIM:
V
IL
max = 0.6 V
V
IH
min = 1.26 V
V
OL
max = 0.45 V
V
OH
min = 1.35 V
For 3.0 V (U)SIM:
V
IL
max = 1.0 V
V
IH
min = 1.95 V
V
OL
max = 0.45 V
V
OH
min = 2.55 V
The (U)SIM2 function
is optional. If the
firmware version of
the module supports
the function of the
(U)SIM2 card, the
relevant functions of
the (U)SIM2 card can
be realized by
multiplexing
AP_READY,
WAKEUP_IN,
SLEEP_IND, and
W_DISABLE#. For
details, please
consult Quectel
Technical Supports.
WAKEUP_IN
1
DO
(U)SIM2 card clock
For 1.8 V (U)SIM:
V
OL
max = 0.45 V
V
OH
min = 1.35 V
For 3.0 V (U)SIM:
V
OL
max = 0.45 V
V
OH
min = 2.55 V
SLEEP_IND
3
DI
(U)SIM2 card
hot-plug detect
V
IL
min = -0.3 V
W_DISABLE#
4
DO
(U)SIM2 card reset
For 1.8 V (U)SIM:
V
OL
max = 0.45 V
V
OH
min = 1.35 V
For 3.0 V (U)SIM:
V
OL
max = 0.45 V
V
OH
min = 2.55 V
Main UART Interface
Pin Name
Pin No.
I/O
Description
DC Characteristics
Comment