tbm-docs/user-doc/user-doc.tex

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\begin{document}

\title{Trusted Boot Module \\[.5em]
\Large User Manual}
\author{}
\date{}
\maketitle

\tableofcontents
\newpage

\section{Introduction}

\section{Flashing}

\begin{figure}[H]
\centering
\begin{tikzpicture}
% Draw the chip.
\node[draw=black,chamfered rectangle,align=center,fill=gray!10,minimum width=3.5cm,minimum height=3cm] (chip) {Winbond \\ W25Q128.V};
\node[draw=black,fill=gray!30,circle] at ($(chip.south west) + (.3,.3)$) {};

% Draw the pin-out at the bottom.
\path[draw] ($(chip.south)+(-1.2,0)$) -- ($(chip.south)+(-1.2,-.5)$) node[below] {CS};
\path[draw] ($(chip.south)+(-.4,0)$) -- ($(chip.south)+(-.4,-.5)$) node[below] {DO};
\path[draw] ($(chip.south)+(.4,0)$) -- ($(chip.south)+(.4,-.5)$) node[below] {WP};
\path[draw] ($(chip.south)+(1.2,0)$) -- ($(chip.south)+(1.2,-.5)$) node[below] {GND};

% Draw the pin-out at the top.
\path[draw] ($(chip.north)+(-1.2,0)$) -- ($(chip.north)+(-1.2,.5)$) node[above] {VCC};
\path[draw] ($(chip.north)+(-.4,0)$) -- ($(chip.north)+(-.4,.5)$) node[above] {H/R};
\path[draw] ($(chip.north)+(.4,0)$) -- ($(chip.north)+(.4,.5)$) node[above] {CLK};
\path[draw] ($(chip.north)+(1.2,0)$) -- ($(chip.north)+(1.2,.5)$) node[above] {DI};
\end{tikzpicture}
\caption{the pin-out of the Winbond W25Q128.V SPI NOR flash}
\end{figure}

\begin{figure}[H]
\centering
\begin{tikzpicture}
% Draw the chip.
\node[draw=black,chamfered rectangle,align=center,fill=gray!10,minimum width=3.5cm,minimum height=3cm] (chip) {Winbond \\ W25Q128.V};
\node[draw=black,fill=gray!30,circle] at ($(chip.south west) + (.3,.3)$) {};

% Draw the pin-out at the bottom.
\path[line width=1.5mm,draw=black] ($(chip.south)+(-1.2,0)$) -- ($(chip.south)+(-1.2,-.7)$);
\path[line width=1.2mm,draw=white] ($(chip.south)+(-1.2,0)$) -- ($(chip.south)+(-1.2,-.7)$) node[below] {CS};
\path[line width=1.5mm,draw=black] ($(chip.south)+(-.4,0)$) -- ($(chip.south)+(-.4,-.7)$);
\path[line width=1.2mm,draw=black] ($(chip.south)+(-.4,0)$) -- ($(chip.south)+(-.4,-.7)$) node[below] {DO};
\path[line width=1.5mm,draw=black] ($(chip.south)+(.4,0)$) -- ($(chip.south)+(.4,-.7)$);
\path[line width=1.2mm,draw=brown] ($(chip.south)+(.4,0)$) -- ($(chip.south)+(.4,-.7)$) node[below] {WP};
\path[line width=1.5mm,draw=black] ($(chip.south)+(1.2,0)$) -- ($(chip.south)+(1.2,-.7)$);
\path[line width=1.2mm,draw=brown] ($(chip.south)+(1.2,0)$) -- ($(chip.south)+(1.2,-.7)$) node[below] {GND};

% Draw the pin-out at the top.
\path[line width=1.5mm,draw=black] ($(chip.north)+(-1.2,0)$) -- ($(chip.north)+(-1.2,.7)$);
\path[line width=1.2mm,draw=orange] ($(chip.north)+(-1.2,0)$) -- ($(chip.north)+(-1.2,.7)$) node[above] {VCC};
\path[line width=1.5mm,draw=black] ($(chip.north)+(-.4,0)$) -- ($(chip.north)+(-.4,.7)$);
\path[line width=1.2mm,draw=orange] ($(chip.north)+(-.4,0)$) -- ($(chip.north)+(-.4,.7)$) node[above] {H/R};
\path[line width=1.5mm,draw=black] ($(chip.north)+(.4,0)$) -- ($(chip.north)+(.4,.7)$);
\path[line width=1.2mm,draw=purple] ($(chip.north)+(.4,0)$) -- ($(chip.north)+(.4,.7)$) node[above] {CLK};
\path[line width=1.5mm,draw=black] ($(chip.north)+(1.2,0)$) -- ($(chip.north)+(1.2,.7)$);
\path[line width=1.2mm,draw=gray] ($(chip.north)+(1.2,0)$) -- ($(chip.north)+(1.2,.7)$) node[above] {DI};
\end{tikzpicture}
\caption{connecting the BusPirate 3.6 with the SPI NOR Flash}
\end{figure}

\end{document}