Reference design guide for Lierda NBXX-01 series NB‑IoT modules, covering hardware interfaces, PCB layout and package dimensions.
This document provides a complete reference design for Lierda NBXX-01 series NB‑IoT modules. It includes an overview of the module, hardware interfaces, software support, key features, and recommended PCB layout guidelines.
The guide also details the module's package dimensions, recommended component selections, and a user notice outlining usage terms and the company's rights to modify the material. This manual is written in Chinese.
| UART interfaces | 2 |
|---|---|
| ADC interfaces | 1 |
| SIM/USIM interface | 1 |
| Transmission power | 23 ± 2 dBm |
| Communication rate | 100 bps – 100 kbps |
| Ultra‑low power consumption | ≤ 5 µA |
| Working voltage (VBAT) | 3.1 V – 4.2 V |
| Package pins | 42 |
The module provides two UART interfaces.
It operates from 3.1 V to 4.2 V (VBAT).
The module’s transmission power is 23 ± 2 dBm.
The module consumes no more than 5 µA in ultra‑low‑power mode.