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\title{SPS30 datasheet PM2.5 sensor keyword你好}
\author{leiyishan}
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\date{\today}
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\begin{document}
\maketitle
\tableofcontents\section{product Overview}
\subsection{working principle}
\subparagraph{Laser scattering}
\subsection{life span}
\subparagraph{More than eight years}
\subsection{size}
\subparagraph{41 x 41 x 12 mm}
\section{Important parameters}
\begin{center}
\begin{tabular}{ p{5cm} p{2cm}p{2cm}p{5cm}p{1cm}}
\hline
parameter & value & unit & Remarks \\
\hline
voltage& 4.5-5&V & -- \\
Idle current & <8 & mA & Idle mode \\
Average current & 60 & mA & -- \\
Precision & $\pm$ 10 & ug/m & 0-100ug/ m \\
concentration & $\pm$ 10 & $\%$ & 100-1000ug/ m \\
I/Opin (RX/SDA,TX/SCL) & -0.3-5.5 & V & \\
max IO pin current & 16 & mA & \\\hline
\end{tabular}
\end{center}
\section{Pin parameter}
\begin{center}
\begin{tabular}{ p{1cm} p{2cm}p{5cm}p{6cm}p{1cm}}
\hline
pin & name & description & remark \\
1 & VDD &Support voltage & 5V $\pm$ 10$\%$ \\
2 & RX & UART Communication acceptance pin & TTL 5V and LVTTL 3.3V compatible \\
& SDA & I2CSerial data output pin & TTL 5V and LVTTL 3.3V compatible \\
3 & TX & UART Communication transmit pin & TTL 5V and LVTTL 3.3V compatible \\
& SCL & I2C Serial clock input & TTL 5V and LVTTL 3.3Vcomatible \\
4 & SEL & Interface selection & Floating mode selsection UART \\&&&Grounding mode selection I2C \\
5 & GND & Grounding mode selection & -- \\
\hline
\end{tabular}
\end{center}
\section{ Typical UART application circuit.}
\subparagraph{Both SCL and SDA lines are open drain I/Os. They should be connected to external pull-up resistors (e.g. Rp = 10 $ \Omega $).}
\subparagraph{in order to correctly select I2C as interface, the interface select (SEL) pin must be pulled to GND before or at the same time the sensor is powered up.}
\begin{center}
\includegraphics[scale=0.6]{uart.png}
\subsection{Set Pointer Read Data}
\subsection{Set Pointer Write Data}
\subsection{Checksum Calculation}
\subsection{I 2 C Commands}
\subsection{Read Measured Values}
\end{center}
\end{document}
原文：https://www.cnblogs.com/china520/p/11775653.html