UNICORECOMM UM982 - 3.2 Grounding and Heat Dissipation; 3.3 Power-on and Power-off

UC-00-M31 EN P1.0.0 Hardware 9
No.
Pin
I/O
Description
6
SPIS_CSN
I
Chip select input of SPI slave
7
SPIS_MOSI
I
Data input of SPI slave
8
SPIS_CLK
I
Clock input of SPI slave
9
SPIS_MISO
O
Data output of SPI slave
10
SPIS_SDRY
O
Interrupt output of SPI slave
11
RSV
—
Reserved, floating
12
RSV
—
Reserved, floating
13
RSV
—
Reserved, floating
14
ERR_STAT
O
Abnormal indicator: active high;
outputs high when failing self-detection, and low
when passing
15
PVT_STAT
O
PVT positioning indicator: active high;
outputs high when positioning and low when not
positioning
16
RTK_STAT
O
RTK positioning indicator: active high;
outputs high with RTK fixed solution, and low with
other positioning status or no positioning
17
RXD1
I
COM1 receiving data, LVTTL level
18
TXD1
O
COM1 transmitting data, LVTTL level
19
RXD2
I
COM2 receiving data, LVTTL level
20
TXD2
O
COM2 transmitting data, LVTTL level
21
SCL
I/O
I
2
C clock
22
SDA
I/O
I
2
C data
23
VCC
POWER
Power supply (+3.3 V)
24
VCC
POWER
Power supply (+3.3 V)
25
BIF
—
Built-in function; recommended to add a through-
hole testing point and a 10 kΩ pull-up resistor;