SIRF 3带TTL和232两种电平输出的GPS板再次升级，全新的GPS开发板带备份电池，使GPS开发板可以具备热启动、暖启动的功能，并且应买家建议，采用通用的2.54mm间距的排针引出，并且增加了秒脉冲输出及显示，可以通过板载LED来判断定位状态（绿色LED闪烁即定位成功）

    另外，购买本板可获得本店的51单片机程序、串口软件、GPS电脑测试程序，及测试教程

    本店另有制作USB转TTL小板，该板可用于STC的单片机烧录以及用来将GPS上的串行信号（TTL电平）转接到电脑USB口，测试及调试、学习都非常方便，GPS板详情请看实物照片：

脚定义从左至右为

VCC（5V）、TTL-TX、TTL-RX、232-TX、232-RX、PPS（秒脉冲）、GND

$GPGGA,145856.000,2244.1009,N,11428.2919,E,1,06,1.2,52.0,M,0.0,M,,0000*50
$GPGSA,A,3,09,18,22,15,25,14,,,,,,,2.4,1.2,2.1*32
$GPRMC,145856.000,A,2244.1009,N,11428.2919,E,0.00,181.38,061111,,,A*65
$GPGGA,145857.000,2244.1010,N,11428.2919,E,1,06,1.2,52.0,M,0.0,M,,0000*59
$GPGSA,A,3,09,18,22,15,25,14,,,,,,,2.4,1.2,2.1*32
$GPRMC,145857.000,A,2244.1010,N,11428.2919,E,0.00,181.38,061111,,,A*6C
$GPGGA,145858.000,2244.1010,N,11428.2918,E,1,06,1.2,52.1,M,0.0,M,,0000*56
$GPGSA,A,3,09,18,22,15,25,14,,,,,,,2.4,1.2,2.1*32
$GPGSV,3,1,09,18,71,019,48,21,46,210,12,09,44,032,45,22,37,325,47*72
$GPGSV,3,2,09,12,34,114,24,25,29,153,21,14,28,291,33,15,17,062,45*7D
$GPGSV,3,3,09,31,04,220,20*44
$GPRMC,145858.000,A,2244.1010,N,11428.2918,E,0.00,181.38,061111,,,A*62
$GPGGA,145859.000,2244.1010,N,11428.2918,E,1,06,1.2,52.0,M,0.0,M,,0000*56
$GPGSA,A,3,09,18,22,15,25,14,,,,,,,2.4,1.2,2.1*32
$GPRMC,145859.000,A,2244.1010,N,11428.2918,E,0.00,181.38,061111,,,A*63
$GPGGA,145900.000,2244.1010,N,11428.2918,E,1,06,1.2,52.1,M,0.0,M,,0000*5A
$GPGSA,A,3,09,18,22,15,25,14,,,,,,,2.4,1.2,2.1*32
$GPRMC,145900.000,A,2244.1010,N,11428.2918,E,0.00,181.38,061111,,,A*6E
$GPGGA,145901.000,2244.1010,N,11428.2918,E,1,06,1.2,52.0,M,0.0,M,,0000*5A

RS232接口连线示意图：

TTL接口连线示意图

上海万硅电子有限公司
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地址： 上海市徐汇区漕河泾开发区桂平路410号
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电话： 021-39652001

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地址：上海上海市上海市徐汇区桂平路410号