Product Manual

MeiGProductManualofSLM750Module
SLM750ModuleHardwareDesign Page 18, total 84 pages
IO Input output
DI Digital input
DO Digital output
PI Power input
PO Power output
AI Analog input
AO Analog output
OD Open drain
Table 5: Pin description
Power Supply
Pin name Pin
number
I/O Description DC features Note
VBAT_BB 59,60 PI Power supply for
module baseband
Vmax=4.2V
Vmin=3.3V
Vnorm=3.8V
It must be able to
provide sufficient
current up to 1A
VBAT_RF 57,58 PI Power supply for
module RF
Vmax=4.2V
Vmin=3.3V
Vnorm=3.8V
It must be able to
provide sufficient
current up to 2A
VDD_EXT
7 PO 1.8V output Vnorm=1.8V
I
o
max=80mA
Power supply for
external GPIO’s
pull up circuits;
If unused, keep it
open
GND 8,9,19,22,
36,46,48,
50~54,
56,72,
85~112
- Ground - -
Turn on/off
Pin name Pin
number
I/O Description DC features Note
RESET_N 20 DI Reset the module V
IH
max=2.1V
V
IH
min=1.3V
V
IL
max=0.5V
1.8V power
domain; active low
level. If unused,
keep it open
PWRKEY 21 DI
Turn on/Standby
V
IH
max=2.1V
V
IH
min=1.3V
V
IL
max=0.5V
Diode voltage drop
inside Qualcomm
chip results in
0.8V output of the
pin
Module status indication
Pin name Pin
number
I/O Description DC features Note