Skip to content

GPS/BDS Unit with SMA Antenna (AT6668)

U190 · M5Stack

GPS/BDS Unit with SMA Antenna (AT6668) photo

Unit GPS SMA is a GNSS global positioning and navigation unit that integrates the high-performance ATGM336H navigation module from CASIC, using the AT6668 chipset, paired with an active external antenna to provide more accurate and reliable satellite positioning services. Compared to previous products, the AT6668 supports multi-frequency and multi-mode GNSS signal reception, capable of receiving signals from multiple satellite navigation systems (including GPS, BD2, BD3, GLONASS, GALILEO,… (M5Stack U190)

Part numberU190
ManufacturerM5Stack
CategoryCommunication & Wireless › GNSS / GPS
Pins4

GPS/BDS Unit with SMA Antenna (AT6668) pinout

PinNameTypeDescription
1SIG1bidirectionalPORT.B: GPIO/analog; PORT.C: UART - see the unit's pin map
2SIG2bidirectionalPORT.B: GPIO/analog; PORT.C: UART - see the unit's pin map
35Vpower
4GNDground

Schematic symbol and footprint

5V3SIG11SIG22GND4
Schematic symbol
1234
Footprint: Grove HY2.0 4-pin through-hole, 2.0 mm pitch — to scale, pad 1 in yellow (mm). Check against the datasheet before ordering PCBs.

Related parts