USGlobalsat EM-5318 - Manual (Page 3)

EM-5318
High Performance GPS Module
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Product Block Diagram
Product Pin Description
PIN Number(s) Name Type Description Note
1 VCC P
This is the main power supply to the engine
board. (3.3Vdc to 5.5Vdc)
2 GND P Ground
3 TIMEPULSE O
This pin provides one pulse-per-second
output from the board, which is synchronized
to GPS time. This is not available in Trickle
Power mode. If do not use it, Just NC.
4 BOOTSEL I Set this pin to high for programming flash.
5 TXD O
This is the main transmits channel for
outputting navigation and measurement data
to user’s navigation software or user written
software. Baud rate based on flash memory