Editing Template:Syscon pinout LQFP 100 pins
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| 18 || 12 || {{cellcolors|#555|#fff}} X1 || EXTAL || {{pini}} || Connected to Crystal <abbr title="20.000MHz">marked "ED" or "EU"</abbr> (Main system clock) || || | | 18 || 12 || {{cellcolors|#555|#fff}} X1 || EXTAL || {{pini}} || Connected to Crystal <abbr title="20.000MHz">marked "ED" or "EU"</abbr> (Main system clock) || || | ||
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| 19 || data-sort-value="18"| || {{cellcolors|#f93}} REGC || VDDbat || {{pin}} || Connected to <abbr title="Button cell, lithium, | | 19 || data-sort-value="18"| || {{cellcolors|#f93}} REGC || VDDbat || {{pin}} || Connected to <abbr title="Button cell, lithium, 20 mm diameter, 2.5 mm height, 170 mAh">CR2025 battery +</abbr> through 2 inverted Schottky 30V@30mA diodes ?<br>1uF capacitor to ground ? || || 2.5V | ||
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| 20 || data-sort-value="20"| || {{cellcolors|#333|#fff}} V<span style="font-size:60%;">SS</span> || GND || {{pin}} || || || | | 20 || data-sort-value="20"| || {{cellcolors|#333|#fff}} V<span style="font-size:60%;">SS</span> || GND || {{pin}} || || || |