Users Manual Part 1

SIM8260A_Hardware Design_V1.05
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Table 7: Pin description
Pin name
Pin
no.
Electrical
description
Description
Comment
Power supply
VBAT_BB
V45,
V49,
U47
PI
V
MAX
=
4.4V
V
TYP
=3.8V
V
MIN
=3
.3V
Input power supply for
module’s BB part
VBAT_RF
Y49,
AC47,
AA47,
W47,
AD45,
AB45,
Y45
PI
V
MAX
=
4.4V
V
TYP
=3.8V
V
MIN
=3
.3V
Input power supply for
module’s RF part
VDD_EXT
AL5
PO
V
TYP
=1.8V
Output power supply for
external IO pull up circuits
VREG_1P3
M45
PO
V
TYP
=1.28
V
Output power supply for W82
only
VREG_0P9
P49
PO
V
TYP
=0.88
V
Output power supply for W82
only
VREG_1P9
N47
PO
V
TYP
=
1.88V
Output power supply for W82
and QTM
L10E_3P1
C41
PO
V
TYP
=
3.08V
Output power supply for
PM7250B USB PD-PHY and
USB switch
V
OH
High level output
1.44V
-
1.8V
V
OL
Low level output
0V
-
0.4V
V
IH
High level input
1.26V
-
2.1V
V
IL
Low level input
0V
-
0.36V
R
p
Pull up/down
resistor
10K ohm
-
100K ohm
VDD_P4/P5=3.0V
V
OH
High level output
2.4V
-
3.0V
V
OL
Low level output
0V
-
0.4V
V
IH
High level input
2.1V
-
3.05V
V
IL
Low level input
0V
-
0.6V
R
p
Pull up/down
resistor
10K ohm
-
100K ohm