UNICORECOMM UB4B0M, Руководство пользователя

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UB4B0M User Manua l
6
2.3 Pin Function
Table 2-2 Pin Definition
No Signal Type Description Note
1 RSV Reserved Reserved
2 3.3V PWR Power input 3.3 V~5 V
（
+5%/-3%
）
3 Reserved IO Reserved Reserved
4 RXD3 IO COM3 Receive data LVTTL Level
5
RESETIN I Reset-input
Low level effective,
duration >5 ms
6 Reserved O Reserved Reserved
7 EVENT IO Event input No support currently
8 RSV Reserved Reserved
9 TXD3 O COM3 Send data LVTTL Level
10 GND PWR DGND&GND
11 TXD1 O COM1 Send data LVTTL Level
12 RXD1 I COM1 Receive data LVTTL Level
13 GND PWR DGND&GND
14 TXD2 O COM2 Send data LVTTL Level
15 RXD2 I COM2 Receive data LVTTL Level
16 GND PWR DGND&GND
17
PV O
Position validity
indication
High level effective
If LED indicators are needed,
please connect this pin to the
positive pole of the LED diode.
18 GND PWR DGND&GND
19 PPS O Time mark output LVTTL Level
20 RSV Reserved Reserved
2.4 Electrical Specification
Table 2-3 Absolute Maximum Rating
Parameter Symbol Minimum Maximum Unit
VCC Vcc -0.3 5.5 V
Input Pin Voltage Vin -0.3 3.6 V
VCC Maximum Ripple Vrpp 0 50 mV
Input Pin Voltage (all other pins in
addition to the mentioned ones)
Vin -0.3 3.6 V
RF Input Power Consumption of
Antenna
ANT_IN input
power
+15 dBm
Maximum Bearable ESD Stress Level VESD (HBM)
±
2000 V