Table of Contents
Advertisement
I2C Interface
Pin Name
Pin No.
I2C_SDA
28
I2C_SCL
29
GPIO Pins*
Pin Name
Pin No.
GPIO1
19
GPIO2
20
GPIO3
35
GPIO4
36
GPIO5
72
Other Pins*
Pin Name
Pin No.
PWM1/USB_
55
BOOT
PWM2
54
UG89_Hardware_Design
I/O
Description
I2C serial clock.
OD
Used for external
codec
I2C serial data.
OD
Used for external
codec
I/O
Description
IO
IO
General purpose
IO
input/output
interface
IO
IO
I/O
Description
Pulse width
modulation
interface1 /
DO
Force the module
to enter into
emergency
download mode
Pulse width
DO
modulation
interface2
UMTS/HSPA+ Module Series
UG89 Hardware Design
DC Characteristics
DC Characteristics
V
max=0.45V
OL
V
min=1.35V
OH
V
min=-0.3V
IL
V
max=0.6V
IL
V
min=1.2V
IH
V
max=2.0V
IH
DC Characteristics
V
max=0.45V
OL
V
min=1.35V
OH
V
max=0.45V
OL
V
min=1.35V
OH
capacitor close to the
pin.
Comment
An external 1.8V
pull-up resistor is
required.
If unused, keep it
open.
An external 1.8V
pull-up resistor is
required.
If unused, it is
recommended to
mount a 33pF
capacitor close to the
pin.
Comment
1.8V power domain.
If unused, keep the
pins open.
Comment
1.8V power domain.
If unused, keep it
open.
It is recommended to
reserve test point.
1.8V power domain.
If unused, keep it
open.
21 / 73
Advertisement
Table of Contents
