Product Introduction

6M (HW-539A6MHW-539B7M), with EEPROM storage function, using high gain ceramic antenna (when searching for satellites, pay attention to the antenna facing upwards towards the sky).

The module can perform various parameter settings through the serial port and can be saved in EEPROM. It comes with a rechargeable backup battery and can maintain ephemeris data in case of power failure.

Product parameter

Working voltage: 3.3V-5.0V

Current: 40mA

Default baud rate: 9600 (can be modified through U-Center)

Output frequency: 1Hz (can be modified through U-Center)

GPS antenna interface: SMA

With micro USB interface: GPS module can be debugged using a regular phone data cable

Reserved TTL interface: Can use USB-TTL or external microcontroller to control GPS reception

Modular ceramic antenna: search for stars in open areas without the need for an external GPS antenna

Reserved SMA antenna interface, can use external antenna. Improve the search satellite capability

Note: After the main power is disconnected, the backup battery can maintain the storage of GPS ephemeris data for about half an hour to support warm start or hot start, thereby achieving rapid positioning

Product Pin function

VCC power supply: (3.3V~5.0v)

GND: land

TXD: Module serial port sending pin (TTL level, cannot be directly connected to RS232 level), can be connected to RXD of microcontroller

RXD module serial port receiving pin (TTL level, cannot be directly connected to RS232 level), can be connected to TXD of microcontroller

PPS: Clock pulse output pin

The GPS second pulse signal PPS is used once a second to indicate the entire second of time, which is usually indicated by the rising edge of the PPS second pulse. GPS can provide UTC time, but there will be a delay when the user receives it. Therefore, in order to accurately time, the rising edge of the PPS signal is introduced to indicate the entire second of UTC time, with an accuracy of nanoseconds and no cumulative error.

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