This document provides copyright information and usage restrictions for the LR9548S GPS module. The module, produced by Leadtek Research Inc., features high-precision positioning and is suitable for various applications.
The LR9548S is a high‑sensitivity, low‑power surface‑mount GPS receiver designed for OEM integration. It uses the SiRFstarIII single‑chip architecture and offers 20 tracking channels in a compact 24 × 20 × 2.9 mm package.
The manual covers hardware and software features, electrical and environmental specifications, pin‑out diagrams, reference designs, and ordering information, helping developers quickly incorporate the module into handheld, automotive, or fleet‑tracking applications.
| Chipset | GSC3f SiRFstarIII single chip |
|---|---|
| Channels | 20 |
| Position Accuracy | 10 m 2D RMS |
| Power Supply Voltage | 3.2 ~ 5.0 VDC |
| Power Consumption (continuous) | 230 mW |
| Operating Temperature | -40 °C to +85 °C |
| Interface | TTL serial, NMEA‑0183/SiRF Binary |
The module operates from a 3.2 V to 5.0 V DC power input.
It supports 20 tracking channels.
Cold start time is typically 42 seconds.
The module works from –40 °C to +85 °C.