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Hardware Reference
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.. toctree::

   Technical Reference Manual (PDF) <http://espressif.com/sites/default/files/documentation/esp32_technical_reference_manual_en.pdf>
   Pin List and Functions (PDF) <http://espressif.com/sites/default/files/documentation/esp32_chip_pin_list_en.pdf>
   Chip Pinout (PDF) <http://espressif.com/sites/default/files/documentation/esp32_pinout_v1_0.pdf>
   Silicon Errata (PDF) <http://espressif.com/sites/default/files/documentation/eco_and_workarounds_for_bugs_in_esp32_en.pdf>
   Modules and Boards <modules-and-boards>