
EB-250 AN-
Ver 1.0
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