Service Guide

UMTS/HSPA+ Module Series
UC200A-GL_Hardware_Design 17 / 78
VDD_EXT
7
PO
Provide 1.8 V for
external circuit
Vnom = 1.8 V
I
O
max = 50 mA
It can provide a
pull-up power to
the external GPIO.
If unused, keep it
open.
Turn On/Off
Pin Name
Pin
No.
I/O
Description
DC
Characteristics
Comment
PWRKEY
21
DI
Turn on/off the module
V
IL
max = 0.5 V
VBAT power
domain.
Active low.
RESET_N
20
DI
Reset the module
1.8 V power
domain.
Active low after
turn-on.
Indication Interface
Pin Name
Pin
No.
I/O
Description
DC
Characteristics
Comment
STATUS
61
OD
Indicate the module's
operation status
External pull to 1.8
V. If unused, keep
it open.
NET_STATUS
6
DO
Indicate the module's
network activity status
V
OH
min = 1.35 V
V
OL
max = 0.45 V
1.8 V power
domain. If unused,
keep it open.
NET_MODE
5
DO
Indicate the module’s
network registration
mode
USB Interface
Pin Name
Pin
No.
I/O
Description
DC
Characteristics
Comment
USB_VBUS
71
AI
USB connection detect
Vmax = 5.25 V
Vmin = 3.0 V
Vnom = 5.0 V
Typ. 5.0 V.
If unused, keep it
open.
USB_DP
69
AIO
USB differential data (+)
90 Ω differential
impedance. USB
2.0 compliant.
If unused, keep it
open.
USB_DM
70
AIO
USB differential data (-)
(U)SIM Interface
Pin Name
Pin
No.
I/O
Description
DC
Characteristics
Comment