Rainbow Electronics EB-A801 User Manual
Page 10
EB-A801 User’s Manual V1.0
EverMore Technology Inc.
2F, No.7, R&D Road 1, Science-Based Industrial Park, Hsinchu, Taiwan, 300, R.O.C.
http://www.emt.com.tw
10
3.4 EB-A801 Definition of Pin Assignment
Pin#
Pin name
I/O
Description
1 NC
NC
2
USB_TX
O
USB data output
3
USB_RX
I
USB data input
4
TTL2_RX
I
TTL UART2 Input, if no use, keep floating
5
TTL1_RX
I
TTL UART1 Input, if no use, keep floating
6
TTL1_TX
O
TTL UART1 Output, if no use, keep floating
7 NC
NC
8
1PPS
O
1PPS Time mark output
9 NC
NC
10 NC
NC
11 NC
NC
12
STATUS LED
O
Fix Signal output
13 NC
NC
14 GND
PWR Ground
15
VCC_IN
PWR 3V~3.3V Supply Input
16
V_BAT
I
1.5V~3.6V Input for backup RTC&SRAM
17 NC
NC
18
RESET
I
Reset Pin, active high, if no use, keep floating
19 NC
NC
20 GND
PWR Ground
21 GPSMODE6
I Serial
I/O
Configuration, if no use, keep floating
22 GPSMODE5
I Serial
I/O
Configuration, if no use, keep floating
23
TTL2_TX
O
TTL UART2 Output, if no use, keep floating
24 GPSMODE2
I Sensitivity
Mode, if no use, keep floating
25
ANT_ON
PWR If use passive antenna, keep floating
26 GND
PWR Ground
27
RF_IN
I
For RF signal input
28 GND
PWR Ground