gps 模块说明，有接线定义及原理图，和编码格式.pdf-资料库

SkyNav SKG16A1 Datasheets GPS Module DataSheet Name: Ultra High Sensitivity and Low Power GPS Receiver Module Model NO.: SKG16A1 Revision: 001 Revision History: Revision 001 Description Initial Release to 001 Approved Neil Date 20100110 Skylab M&C Technology Co., Ltd. Address: Room.801, Bldg.211, Terra Industrial Park, Futian District, Shenzhen Phone: 86-755 8340 8210（Sales Support） Phone: 86-755 8340 8130（Technical Support） Fax: 86-755-8340 8560 E-Mail: sales@skylab.com.cn ©Copyright 2010 Skylab M&C Co., Ltd, All Right Reserved The information contained herein is subject to change without notice. 1 www.skylab.com.cn DS-SKG16A1-V1.0-100110

SkyNav SKG16A1 General Description The SkyNav SKG16A1 is a complete GPS engine module that features super sensitivity, ultra low power and small form factor. The GPS signal is applied to the antenna input of module, and a complete serial data message with position, velocity and time information is presented at the serial interface with NMEA protocol or custom protocol. technology. Its –160dBm It is based on the high performance features of the Atheros AR1511 single-chip architecture, Atheros newest chipset tracking sensitivity extends positioning coverage into place like urban canyons and dense foliage environment where the GPS was not possible before. The small form factor and low power consumption make the module easy to integrate into portable device like PNDs, mobile phones, cameras and vehicle navigation systems. Applications  LBS (Location Based Service)  PND (Portable Navigation Device)  Vehicle navigation system  Mobile phone Pin Assignment Datasheets Figure 1: SKG16A1 Top View Features  Ultra high sensitivity: -160dBm  Extremely fast TTFF at low signal level  Built in high gain LNA  Low power consumption: Typical 40mA@3.3V  NMEA-0183 compliant protocol or custom protocol  Operating voltage: 3.0V to 3.6V  Operating temperature range: -40 to 85℃  SMD type with stamp holes  Small form factor: 13.1x15.9x2.7mm  RoHS compliant (Lead-free) E K A W D N G D N G D N G C N D N G D N G D N G D N G S P P D N G TXD0 RXD0 RXD1 GND TXD1 GND GND 33 36 1 24 GPIO3 GND NC TOP VIEW 15 GND GND RESET GND 6 T N A D N G D N G D N G T A B V D N G D N G D N G D N G D D V T O O B 2 www.skylab.com.cn DS-SKG16A1-V1.0-100110

SkyNav SKG16A1 Performance Specification Parameter Receiver Type Sensitivity Accuracy Acquisition Time Power Consumption Navigation Data Update Rate Operational Limits Figure 2: SKG16A1 Pin Package Datasheets Specification L1 frequency band, C/A code, 20-channels Tracking Acquisition Position Velocity Timing (PPS) Cold Start Warm Start Hot Start Re-Acquisition Tracking Acquisition 1Hz Altitude Velocity Acceleration -160dBm -144dBm 3.0m CEP50 without SA(Typical Open Sky) 0.1m/s without SA 60ns RMS 36s(Typical Open Sky) 30s 2s <1s 35mA @3.3V Vcc(Typical) 40mA Max 18,000m Max 515m/s Less than 4g Interfaces Configuration Power Supply: Regulated power for the SKG16A1 is required. The input voltage Vcc should be 3.0V ±10%, maximum, current is no less than 100mA. Suitable decoupling must be provided by external decoupling circuitry(10uF and 1uF). It can reduce the Noise from power supply and increase power stability. Antenna: The SKG16A1 GPS receiver is designed for supporting the active antenna or passive antenna connected with pin RF_IN. The gain of active antenna should be no more than 20dB (18~20dB Typical). The maximum noise figure should be no more than 1.5dB and output impedance is at 50 Ohm. UART Ports: The module supports two full duplex serial channels UART0 and UART1. All serial connections are at 3V CMOS logic levels, if need different voltage levels, use appropriate level shifters. The baud rate of both serial ports are fully programmable, the data format is however fixed: X, N, 8, 1, i.e. X baud rate, no parity, eight data bits and one stop bit, no other data formats are supported, LSB is sent first. The modules default baud rate is set up 4800bps, however, the user can change the default baud rate to any value from 4800 bps to 115kbps. UART0 is used e.g. for booting and NMEA interface. UART1 can be utilized for UBP protocol. Boot Mode Select: The pin Boot is used to set the boot mode of the SKG16A1 GPS Receiver. By default the receiver will boot in normal GPS mode. If there are corrupted data in FLASH, it may be necessary to boot the receiver in test mode by pulling Boot pin low during a power cycle or hardware reset to update the firmware. Backup Battery Power: In case of a power failure on pin Vcc, real-time clock are supplied through pin V_BCKP. It enables the SKG16A1 GPS Receiver to recover from power failure with either a hot start or a warm start. Please be noted that module could not work if V_BCKP do not connect with backup battery or power supply(2.0~3.6V), and still need to add a bypassing 2 www.skylab.com.cn DS-SKG16A1-V1.0-100110

Datasheets and increase the stability. SkyNav SKG16A1 capacitor (1uF) to V_BCKP pin, then can reduce noise Pin Description Pin No. Pin name RF_IN GND GND GND I/O Description I Antenna Input G Ground G Ground G Ground I RTC Battery Input 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 V_BCKP GND BOOT GND GND GND VIN GND RESET GND GND GPIO7 GND GPIO3 GND PPS GND GND GND GND GPIO8 GND WAKE GND GND TXD0 RXD0 RXD1 GND TXD1 GND Boot Mode G Ground I G Ground G Ground G Ground I Module Power Supply G Ground I Module Reset (Active Low Status) G Ground G Ground I/O General purpose I/O G Ground I/O General purpose I/O G Ground O Time pulse Signal (100ms) G Ground G Ground G Ground G Ground I/O General purpose I/O G Ground I WAKE Control Input Pin G Ground G Ground O UART Serial Data Output 0 I UART Serial Data Input 0 O UART Serial Data Output 1 G Ground I UART Serial Data Input 1 G Ground Remark 50Ω@1.57542GHz This pin must be connect to Battery or Power Supply(2.0~3.6V) Leave Open in not used Leave open if not used Leave Open in not used Leave Open in not used Leave Open in not used Leave Open in not used Leave Open in not used Leave Open in not used Pull up (10KΩ) if not used Not Open Not Open 3 www.skylab.com.cn DS-SKG16A1-V1.0-100110

SkyNav SKG16A1 36 GND G Ground Datasheets Electrical Characteristics Absolute Maximum Rating Symbol VCC RESET Max Units RXD0, RXD1 Min -0.3 Parameter Power Supply Power Supply Volt. Input Pins Input Pin Voltage I/O Input Pin Voltage I/O Input Pin Voltage I/O Antenna Bias DC Voltage Backup Battery Environment Storage Temperature Peak Reflow Soldering Temperature <10s Humidity Note: Absolute maximum ratings are stress ratings only, and functional operation at the maxims is not guaranteed. Stress beyond the limits specified in this table may affect device reliability or cause permanent damage to the device. For functional operating conditions, refer to the operating conditions tables as follow. BOOT V_ANT V_BCKP -0.3 -0.3 -0.3 -0.3 2.0 V V V V V V 3.6 3.6 3.6 3.6 5.0 3.6 Tstg Tpeak 125 260 95 -40 °C °C % Operating Conditions Parameter Power supply voltage Power supply voltage ripple Consumption current Input high voltage Input low voltage Output high voltage Output low voltage Operating temperature 4 Symbol Vcc Vcc_PP Icc IH V V IL V OH V OL Topr Condition Vcc=3.3V Vcc=3.3V Min 3.0 0.7xVcc -0.3 0.8xVcc 0 -40 Typ 3.3 40 Max 3.6 30 45 Vcc 0.3xVcc Vcc 0.2xVcc 85 Units V mV mA V V V V °C www.skylab.com.cn DS-SKG16A1-V1.0-100110

SkyNav SKG16A1 Mechanical Specification Datasheets Recommend Layout Figure 3: SKG16A1 Dimensions Unit:mm Unit:mm Figure 4: SKG16A1 Footprint Packaging Specification SKG16A1 modules are shipped in tray and with 90 units per tray. Each tray is ‘dry’ package. 5 www.skylab.com.cn DS-SKG16A1-V1.0-100110

SkyNav SKG16A1 Datasheets 900 90 Figure 5: SKG16A1 Packaging PACKING Manufacturing Process Recommendations Figure 6: SKG16A1 Typical Leadfree Soldering Profile Note：The final soldering temperature chosen at the factory depends on additional external factors like choice of soldering paste，size，thickness and properties of the baseboard，etc. Exceeding the maximum soldering temperature in the recommended soldering profile may permanently damage the module. 6 www.skylab.com.cn DS-SKG16A1-V1.0-100110

SkyNav SKG16A1 Reference design schematic Datasheets Figure 7: SKG16A1 Typical Reference design schematic Software Protocol NMEA 0183 Protocol The NMEA protocol is an ASCII-based protocol, Records start with a $ and with carriage return/line feed. GPS specific messages all start with $GPxxx where xxx is a three-letter identifier of the message data that follows. NMEA messages have a checksum, which allows detection of corrupted data transfers. Table 1: NMEA-0183 Output Messages The SkyNav SKG16A1 module supports the following NMEA-0183 messages: GGA, GLL, GSA, GSV, RMC VTG, ZDA and DTM. The module default NMEA-0183 output is set up GGA, GSA ,GSV, RMC and default baud rate is set up 9600bps. 7 www.skylab.com.cn DS-SKG16A1-V1.0-100110

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gps 模块说明，有接线定义及原理图，和编码格式.pdf

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