RoyalTek REB-3000 User Manual
Page 14
RoyalTek RGM-3000/REB-3000
GPS Module Operational Manual)
9
Hardware interface
RGM-3000/REB-3000.
Pin
NO
Name I/O
Description
Characteristic
1
VCC
System Power
DC 3.3V ± 10%
2
VCC
System Power
DC 3.3V ± 10%
3
TXA
O Navigation Data Output TTL Level；Voh≧2.4V，Vol≦0.4V；Ioh=Iol=2mA
4
RXA
I
Serial Data Input
TTL Level；Vih≧0.7*VCC；Vil≦0.3*VCC
5 TXB O
Reserved
TTL Level；Voh≧2.4V，Vol≦0.4V；Ioh=Iol=2mA
6
RXB
I RTCM 104 Differential
GPS Input
TTL Level；Vih≧0.7*VCC；Vil≦0.3*VCC
7
TIMEMARK
O 1 Pulse per second time
mark Output
Vil≦0.2V，Pulse Width≧10ms
8 RESET I
System Reset ， Active
Low
Vil≦0.2V，Pulse Width≧1ms
9 BOOTSEL I
Internal boot，Active High TTL Level；Vih≧0.7*VCC；Vil≦0.3*VCC
10
WAKEUP
I Active low wakeup from
the RTC
TTL Level；Voh≧2.4V，Vol≦0.4V；Ioh=Iol=2mA
11
VBAT
External Backup Power
Input
2.1V≦ Vbat ≦3.6V
12 RESERVED
13
GPIO3
I/O General Purpose I/O Pin TTL Level；
Output：Voh≧2.4V，Vol≦0.4V；Ioh=Iol=2mA
Input：Vih≧0.7*VCC；Vil≦0.3*VCC
14
GPIO5
I/O General Purpose I/O Pin TTL Level；
Output：Voh≧2.4V，Vol≦0.4V；Ioh=Iol=2mA
Input：Vih≧0.7*VCC；Vil≦0.3*VCC
15
GPIO6
I/O General Purpose I/O Pin TTL Level；
Output：Voh≧2.4V，Vol≦0.4V；Ioh=Iol=2mA
Input：Vih≧0.7*VCC；Vil≦0.3*VCC
16
GPIO7
I/O General Purpose I/O Pin TTL Level；
Output：Voh≧2.4V，Vol≦0.4V；Ioh=Iol=2mA
Input：Vih≧0.7*VCC；Vil≦0.3*VCC
17
GPIO10
I/O General Purpose I/O Pin TTL Level；
Output：Voh≧2.4V，Vol≦0.4V；Ioh=Iol=2mA
Input：Vih≧0.7*VCC；Vil≦0.3*VCC
18
GPIO13
I/O General Purpose I/O Pin TTL Level；
Output：Voh≧2.4V，Vol≦0.4V；Ioh=Iol=2mA
Input：Vih≧0.7*VCC；Vil≦0.3*VCC
19
GPIO15
I/O General Purpose I/O Pin TTL Level；
Output：Voh≧2.4V，Vol≦0.4V；Ioh=Iol=2mA
Input：Vih≧0.7*VCC；Vil≦0.3*VCC
20 GND
System
GND
21 GND
System
GND
22 GND
System
GND