Data Sheet

#
5. Schematics
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Figure 5-2. ESP-WROOM-02 Peripheral Schematics
EN
IO14
IO12
IO13
IO15
IO2
IO0
IO16
IO5
IO4
ADC
RXD
RST
TXD
VDD33
GND
VDD33
GND
GND
GNDGND
GND
GND
J2
BOOT OPTION
1 2
U1
ESP_WROOM_02
3V3
1
EN
2
IO14
3
IO12
4
IO13
5
IO15
6
IO2
7
IO0
8
GND1
9
IO4
10
RXD
11
TXD
12
GND2
13
IO5
14
RST
15
TOUT
16
IO16
17
GND3
18
P_GND
19
J1
UART DOWNLOAD
1
2
3
C2 0.1uF
C3 0.1uF
R2 10K
C1 10uF
R1
10K
📖 Note:
Soldering Pad 19 to the Ground of the base board is not necessary for a satisfactory thermal performance. If
users do want to solder it, they need to ensure that the correct quantity of soldering paste is applied.
Espressif
# /#13 17
2017.10