EB-250 AN-01
Ver 1.0
7
4. Connector Definition
Pin#
Signal Name
Type
Description
1
RX1
I
Serial Data Input
2
TX1
O
Serial Data Output
3
PPS
O
1Hz pulse 10% duty cycle when GPS has position fix
4
TXD
O
Serial data Output (NMEA)
5
RXD
I
Serial Data Innput (NMEA)
6
GND
P
Ground
7
GPIO[8]
I/O* General input/ output
8
GPIO[0]
O
GPS status, blink when GPS has position fix
9
GPIO[4]
I/O* General input/ output
10
V285D
P
Digital power indicator, 2.85V
±
2%
11
On / Off
I
GPS Power On / Off control , Open if not used
12
V_RTC_3V3
P
RTC power 1.5~6V DC, 500uA max
13
VIN_3V3
P
Power Supply 3.0~6V DC
14
GPIO[6]
I/O* General input / output
15
GPIO[7]
I/O* General input / output
16
GPIO[5]
I/O* General input / output
17
GND
P
Ground
18
NC
NC
NC
19
V285A
P
Analog power indicator, 2.85V
±
2%
20
GND
P
Ground
21
RF Input
I
Antenna port, L1, 1575.42MHz, 50 ohm
22
GND
P
Ground
P: Power I: Input O: Output I/O*: Input or Output, Open if not used
