ESP-12K Specification V1.0
C
opyright © 2019 Shenzhen Ai-Thinker Technology Co., Ltd All Rights Reserved
XVI
6.DESIGN GUIDE
1
、
Application circuit
note:
(1) The RC delay circuit needs to be added to the EN pin. It is recommended that
R = 10kΩ and C = 0.1μF;
(2) GPIO18 as U1RXD needs to add a pull-up resistor externally.
2
、
Antenna layout requirements
(1) The following two methods are recommended for the installation location on
the motherboard:
Option 1: Place the module on the edge of the main board, and the antenna area
protrudes from the edge of the main board.
Option 2: Place the module on the edge of the motherboard, and the edge of the
motherboard digs out an area at the position of the antenna.
(2) In order to meet the performance of the onboard antenna, it is forbidden to
place metal parts around the antenna, away from high-frequency devices.
