The ATGM336H-5N module is a small family of high performance BDS/GNSS constellation positioning and navigation modules. This series of products are in a micro module fourth generation low power single chip AT6558 based on GNSS SOC, supports a variety of satellite navigation systems, including China BDS (Beidou navigation satellite system), the American GPS, the Russian GLONASS, European GALILEO, Japan QZSS and SBAS satellite augmentation system (WAAS, EGNOS, GAGAN MSAS). The AT6558 is a real sense Liuhe multimode satellite navigation chip, including 32 tracking channel, GNSS signal can receive six satellite navigation system, and realize the joint positioning, navigation and timing. ATGM336H-5N this series of modules has the advantages of high sensitivity, low power consumption and low cost. It is suitable for vehicle navigation, handheld positioning and wearable devices. It can directly replace the Ublox MAX module.