Leadtek LR9101LP GPS Module is a low-cost, high-performance GPS module that supports multiple augmentation systems (WAAS/EGNOS/DGPS) and integrates 1PPS signal output and time synchronization function.
This manual introduces the Leadtek LR9101LP GPS module, a compact 20‑channel SMD GPS receiver designed for OEM integration in devices such as PDAs, handhelds and asset‑tracking units. It outlines the module's high‑gain architecture, SiRF StarIII/LP chipset, and RoHS‑compliant construction.
The document details technical specifications, hardware and software interfaces (TTL serial, NMEA‑0183/SiRF Binary), mechanical dimensions, recommended antenna, environmental limits, and compliance information, helping developers integrate the module quickly and reliably.
| Module size | 15x14x2.8 mm (590.6x551.2x110.2 mil) |
|---|---|
| Weight | 1 g |
| Antenna type | Right‑hand circular polarized passive antenna |
| Antenna frequency range | 1575.42 ± 1.023 MHz |
| Serial baud rate | 9600, 19200 bps (default 9600) |
| Output frequency | 1 Hz |
| Supply voltage | 1.50 VDC |
Cold start takes 42 seconds, warm start 38 seconds, and hot start 1 second.
It uses a TTL level serial port and supports NMEA‑0183 and SiRF Binary protocols.
Yes, the module is RoHS compliant (lead‑free).