WKG0254T01Y01 is a high-performance, low-power BDS/GNSS positioning module. It is based on AT6558F-5N32 SoC from Zhongke Micro, which integrates an RF front-end, digital baseband processor, 32-bit RISC CPU, and power management.

The module supports multiple satellite systems, including BDS, GPS, GLONASS, QZSS, and SBAS (WAAS, EGNOS, GAGAN, MSAS). With 32 tracking channels, it can receive signals from multiple systems simultaneously and enable combined positioning.

With high sensitivity, low power consumption, and cost efficiency, it is suitable for applications such as vehicle navigation, handheld devices, and automotive rearview mirrors.

Key Features

l Supports single- and multi-constellation positioning (BDS / GPS / GLONASS)

l Supports A-GNSS

l Cold start sensitivity: -148 dBm

l Hot start sensitivity: -156 dBm

l Reacquisition sensitivity: -160 dBm

l Tracking sensitivity: -162 dBm

l Position accuracy: 2.5m (CEP50)

l TTFF: ≤32s

l Low power consumption (~30mA @5V)

l Integrated LNA

l Built-in 25x25x4mm ceramic antenna(customization size available) 

l Fast hot start (<1s) with onboard capacitor

l Standard NMEA-0183 output

l Built-in flash memory for storing ephemeris data and configuration.

Applications

l Vehicle navigation and tracking

l Power timing / 4G/5G synchronization

l IoT positioning devices

l UAV (drones)

l Portable device

Assisted GNSS

Supports A-GNSS, providing assistance data such as ephemeris, approximate position, and time.

This significantly reduces Time-To-First-Fix (TTFF), even in weak signal environments.

Output Protocol

The module outputs data via UART interface using NMEA-0183 protocol.

Performance Specifications