GND1GND23V33NC4IO25IO36NC7EN8NC9NC10GND11IO012IO113GND14NC15IO1016NC17IO418IO519IO620IO721IO822IO923NC24NC25IO1826IO1927NC28NC29RXD030TXD031NC32NC33NC34NC35GND36GND37GND38GND39GND40GND41GND42GND43GND44GND45GND46GND47GND48GND49GND50GND51GND52GND53