GNSS / BeiDou Modules

BeiDou Positioning Module WKG0254T02Y01

WKG0254T02Y01 is a high-performance single-constellation BeiDou positioning and navigation module with a compact size of 28 × 28 × 7 mm. It is based on the AT6668B-6N22 SoC, a sixth-generation multi-system GNSS single-chip solution from Zhongke Micro, supporting BeiDou-2 and BeiDou-3 (B1I and B1C) signals.

Product Overview

WKG0254T02Y01 is a high-performance single-constellation BeiDou positioning and navigation module with a compact size of 28 × 28 × 7 mm. It is based on the AT6668B-6N22 SoC, a sixth-generation multi-system GNSS single-chip solution from Zhongke Micro, supporting BeiDou-2 and BeiDou-3 (B1I and B1C) signals.


Leveraging proprietary fast acquisition technology, WKG0254T02Y01 can quickly capture a large number of visible satellites, enabling fast and accurate positioning. It significantly improves positioning performance in challenging environments such as urban canyons. The module integrates a high-performance embedded CPU, supporting a maximum position update rate of up to 10 Hz, making it suitable for high-dynamic applications sensitive to positioning latency. It also features dedicated anti-interference hardware acceleration circuitry, capable of rapidly detecting and suppressing RF interference.


With advantages including high sensitivity, low power consumption, and cost-effectiveness, WKG0254T02Y01 is ideal for applications such as vehicle navigation, handheld positioning devices, and automotive rearview mirrors.


Built on a new-generation integrated navigation SoC architecture, the module supports high-precision positioning and timing applications, while offering high integration, high performance, low power consumption, and compact size. It is widely applicable in automotive navigation, wearable devices, smartphones, IoT devices, and UAV (drone) applications.


Key Features


l Supports BDS-2 / BDS-3 (B1I, B1C)

l Support B1I / B1C standalone positioning

l Supports A-BDS

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: 2m (CEP50)

l TTFF: ≤23s

l Operating Current: ≤ 42 mA

l Standby Current: ≤ 10 µA

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


Applications


l Vehicle navigation and tracking

l Power timing / 4G/5G synchronization

l IoT positioning devices

l UAV (drones)

l Portable devices


Assisted GNSS


Supports A-BDS, 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


Module Number
WKG0254T02Y01
Chipset
AT6668
Module Size
28*28*7mm
Satellite System
BDS-2 / BDS-3
Band
B1I / B1C
Tracking Sensitivity
-162dBm
Re-acquisition Sensitivity
-160dBm
Cold Start Time
<23s
Warm Start Time
<1s
Hot Start Time
<1s
UART Baud Rate
default:115200bps
Output Protocol
NMEA0183
Supply Voltage
DC 3.3V to 5.5V
Update Rate
1Hz default / up to 10Hz
Position Accuracy
≤2m (CEP50)
Operating Temperature
–40 °C to +85 °C
Storage Temperature
–40 °C to +85 °C