UM980eb User Manual
6
Power Supply
UC-08-M32 EN R1.0
No.
Pin Name
I/O
Description
24
RSV#23
—
Reserved
25
RTK_STAT
O
RTK status, active high.
High level for RTK fixed solution and low level
for other status.
26
ERR_STAT
O
Error status, active high.
High level when failing self-test and low level
when passing self-test.
27
SDA
I/O
I
2
C data
28
SCL
I/O
I
2
C clock
The availability of the ports depends on the firmware version of the UM980 module.
3
Power Supply
The power supply of the UM980eb is input from the VIN pin, passing through a circuit
with surge protection and filter capacitors, to provide power for the 3.3 V LDO circuit and
5 V DC/DC boost circuit.
The input range of VIN is 3.2V to 5V.
FC1
NFM21PC104R1E3D
VIN operation range: 3.2V~5V
Figure 3-1 Power Filter Circuit
