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
