RoyalTek REB-3000 - 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