Huawei ME909u-521 Hardware Manual page 20

HUAWEI ME909u-521 LTE LGA Module
Hardware Guide
Pin Pin Name Pad
No. Type
76 UART0_TX O
77 Reserved -
78 UART0_RX I
79 Reserved -
80 UART0_CTS I
81 POWER_ON_ I
OFF
82 NC -
83 NC -
84 NC -
85 USB_DM I/O
86 USB_DP I/O
87 JTAG_TDI I
88 USIM_RESET O
89 USIM_DATA I/O
Issue 05 (2017-12-15)
Description Parameter
UART0 transmit V
OH
output
V
OL
Reserved, must -
keep this pin open
UART0 receive V
IH
data input
V
IL
Reserved, must -
keep this pin open
UART0 Clear to V
IH
Send
V
IL
System power-on -
or power-off, pulled
up in module. Do
not pull up it any
more on the
customer board.
Not connected, -
please keep this
pin open
Not connected, -
please keep this
pin open
Not connected, -
please keep this
pin open
USB Data- defined -
in the USB 2.0
Specification
USB Data+ defined -
in the USB 2.0
Specification
JTAG test data V
IH
input
V
IL
USIM reset -
USIM data -
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Copyright © Huawei Technologies Co., Ltd.
Description of the Application Interfaces
Min. Typ. Max.
(V) (V) (V)
1.35 1.8 1.8
0 - 0.45
- - -
1.17 1.8 2.1
–0.3
- 0.63
- - -
1.17 1.8 2.1
–0.3
- 0.63
- 1.8 -
- - -
- - -
- - -
- - -
- - -
1.17 1.8 2.1
–0.3
- 0.63
- 1.8/2.8 -
5
- 1.8/2.8 -
5
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