Leadtek LR9548S User Manual

LR9548S GPS Module Technical Manual v1.52
© 2006 Leadtek Research Inc. All rights reserved. Page 8/20
Preliminar
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Confidential - Information is sub
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o chan
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e without
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rior notice.
Pin Settings
PIN Name Type Description
1 FREQ_XFER I If not used, keep floating
2 NC I/O Not connected
3 NC I/O Not connected
4 RXDB I TTL UART Port B input. If not used, keep floating
5 RXDA I TTL UART Port A input
6 TXDA O TTL UART Port A output
7 GPIO5 I/O Reserved, keep floating
8 TIMEMARK I/O 1 PPS output
9 NC I/O Not connected
10 GPIO13 I/O Reserved, keep floating
11 GPIO0 I/O Reserved, keep floating
12 GPIO1 I/O Reserved, keep floating
13 GPIO14 I/O Reserved, keep floating
14 GND PWR Ground
15 VCC_IN PWR 3.2~5.0V DC supply input
16 VSTBY PWR
Apply 1.65~5.0V DC for backup RTC & SRAM. If not used,
keep floating
17 BOOTSEL I Pull high for programming mode. If not used, keep floating
18 PBRESN I Reset pin, active low, If not used, keep floating
19 GPIO15 I/O Reserved, keep floating
20 GND PWR Ground
21 NC I/O Not connected
22 NC I/O Not connected
23 TXDB O TTL UART Port B output. If not used, keep floating
24 NC O Not connected
25 ANTPWR PWR Antenna power input
26 GND PWR Ground
27 RFIN I RF Signal input
28 GND PWR Ground

Leadtek LR9548S Specifications

General

Brand	Leadtek
Model	LR9548S
Category	GPS
Language	English