Yuga NB module hardware manual V1.01
Table Of Contents
- Chapter 1. Introduction
- Chapter 2. Review of modules
- Chapter 3. Interface application description
- Chapter 4. RF overall technical index
- Chapter 5. Electrical characteristics of interface
- Chapter 6. Structure and mechanical properties
- Chapter 7. Production and packaging
- Chapter 8. Terminology abbreviation
LPM2100 mg NB module hardware manual
Shang Hai YUGE Information Technology co., LTD
Page
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39
Figure 3-14 SPI reading sequence diagram
Figure 3-15 SPI writing sequence diagram
3.10 I2C bus
The LPM 2100 mg NB module provides a set of hardware 5.0 protocol bidirectional
serial buses with a clock rate of 400 KHZ and an interface voltage of 2.8 V.
Table 3-12 I2C pin definition
Pin
Pin name
IO
Functional description
Remarks
32
SCL
OD
I2C bus clock output
Internal resistance pull up
33
SDA
IO
I2C bus data input and output
Internal resistance pull up
The I2C reference circuit is illustrated as follows: