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Schematic of ESP-WROOM-02 Reference Design
D1
C4
Capacitance
10uF
ESP_RX
+3V3
CC1
TOUT
VBUS
ADC
C11
Capacitance
0.1uF
+3V3
GPIO15
GPIO14
C8
Capacitance
10uF
ESP_TX
CC2
ESP_IO0
USBDN
+3V3
ESP_IO0
C6
Capacitance
0.1uF
C7
Capacitance
0.1uF
GPIO16
GPIO5
+3V3
+5V
USBDP
GPIO13
TOUT
GPIO12
C10
Capacitance
0.1uF
USBDN
ESP_RX
+3V3
VBUS
GPIO4
USBDN
ESP_EN
USBDP
C12
Capacitance
0.1uF
+5V
GPIO2
RST
CC2
+3V3
ESP_TX
ESP_EN
ESP_IO0
ESP_EN
+3V3
USBDP
R1
Resistance
Resistance
Resistance
10kΩ
R8
Resistance
Resistance
Resistance
82kΩ
PWR
R7
Resistance
Resistance
Resistance
220kΩ
R2
Resistance
Resistance
Resistance
5.1kΩ
C9
Capacitance
10uF
R4
Resistance
1kΩ
EN
Q1
R3
Resistance
Resistance
Resistance
5.1kΩ
C5
Capacitance
10uF
R6
Resistance
Resistance
Resistance
10kΩ
BOOT
R5
Resistance
Resistance
Resistance
10kΩ
Q2
ESP1
U1
IC1

ESP-WROOM-02 Reference Design