Specifications
ESP-13U Specification V1.0
Copyright © 2019 Shenzhen Ai-Thinker Technology Co., Ltd All Rights Reserved
XII
5. Pin definition
ESP-13U has eighteen interface，refer to following Pin diagram，
ESP-12F pin diagram
Table Pin function definition
No Name Function
1 3V3 3.3V power supply（VDD）； external power supply output
current recommended above 500 mA
2 EN chip enable end, high level efficient
3 IO14 GPIO14/HSPI_CLK
4 IO12 GPIO12/HSPI_MISO
5 IO13 GPIO13/HSPI_MOSI/UART0_CTS
6 IO15 GPIO15/MTDO/HSPICS/UART0_RTS
7 IO2 GPIO2/UART1_TXD