UM980 User Manual
8
Hardware
UC-00-M32 EN R1.0
2.2
Pin Definition
1
2
3
4
5
6
7
8
9
10
11
12
13
14
42
43
44
45
46
47
48
49
50
51
52
53
54
27
26
25
24
23
22
21
20
19
18
17
16
15
41
40
39
38
37
36
35
34
33
32
31
30
29
28
G
ND
A
N
T
_IN
G
ND
A
N
T
_D
ET
EC
T
A
N
T
_O
FF
A
N
T
_S
HO
R
T_
N
V
CC
_RF
SP
IS
_C
SN
SP
IS
_M
O
SI
SP
IS
_C
LK
SP
IS
_M
IS
O
G
ND
G
ND
R
SV
NC
NC
NC
NC
PVT_STAT
RTK_STAT
ERR_STAT
RSV
RSV
NC
NC
RXD2
TXD2
B
IF
B
IF
TX
D
3
R
XD
3
G
ND
V
CC
V
CC
R
SV
V
_B
CK
P
G
ND
NC
NC
NC
G
ND
TXD1
RXD1
SDA
SCL
NC
NC
GND
RESET_N
NC
EVENT
NC
PPS
NC
Top View
Figure 2-2 UM980 Pin Definition
Table 2-2 Pin Description
No.
Pin
I/O
Description
1
GND
—
Ground
2
ANT_IN
I
GNSS antenna signal input
3
GND
—
Ground
4
ANT_DETECT
I
Antenna signal detection
5
ANT_OFF
O
Disable external LNA
6
ANT_SHORT_N
I
Detection of antenna short circuit;
active low
