Data Sheet

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5. Schematics
5. Schematics
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Figure 5-1. ESP-WROOM-02D Schematics!
5 5
4 4
3 3
2 2
1 1
D D C C B B A A
The values of C4, L1 and L2 vary with the actual PCB board.
The values of C1 and C2 vary with the selection of the crystal.
GPIO15
RST
SD_D1 SD_D0 SD_CLK SD_CMD SD_D3 SD_D2
SD_CLK SD_CMD SD_D2
UTXDA
WIFI_ANT
GPIO14
GPIO12
URXD
GPIO13
GPIO16
GPIO0
CH_PU
GPIO2
GPIO4
GPIO5
CH_PU GPIO14 GPIO12 GPIO13 GPIO15 GPIO2 GPIO0
GPIO4 GPIO5 URXD UTXD RST TOUT GPIO16
TOUT
SD_D3 SD_D0 SD_D1
UTXD
GND
GND
VDD33
GND
GNDGND
GND
VDD33
GND
VDD33
GND
GND
GND
GND
VDD33
GND GND
GND
VDD33
GND
GND
GND
GND
Title Size
Document Number Rev
Date: Sheet of
<Doc> ESP-WROOM-02D
A3
22Monday, February 25, 2019
Title Size
Document Number Rev
Date: Sheet of
<Doc> ESP-WROOM-02D
A3
22Monday, February 25, 2019
Title Size
Document Number Rev
Date: Sheet of
<Doc> ESP-WROOM-02D
A3
22Monday, February 25, 2019
ANT1
1 2
C2 10pF
D1 LESD8D3.3CAT5G
J18 CON1
1
R1
12K±1%
J5 CON1
1
C7
TBD(NC)
C1
10pF
C3
0.1uF
L3 4.3nH
J10 CON1
1
J13 CON1
1
C8
1uF(NC)
J4 CON1
1
J15 CON1
1
J9 CON1
1
U3 FLASH
/CS
1
DO
2
/WP
3
GND
4
DI
5
CLK
6
/HOLD
7
VCC
8
L1 TBD
R3 200R
J12 CON1
1
J3 CON1
1
C4 TBD
L2
TBD
J8 CON1
1
C6 1uF
J2 CON1
1
U1
26MHz±10ppm
XIN
1
GND
2
XOUT
3
GND
4
J11 CON1
1
J7 CON1
1
J1 CON1
1
J14 CON1
1
U2ESP8266EX
VDDA
1
LNA
2
VDD3P3
3
VDD3P3
4
VDD_RTC
5
TOUT
6
CHIP_EN
7
XPD_DCDC
8
MTMS
9
MTDI
10
VDDPST
11
MTCK
12
MTDO
13
GPIO2
14
GPIO0
15
GPIO4
16
VDDPST
17
SD_DATA_2
18
SD_DATA_3
19
SD_CMD
20
SD_CLK
21
SD_DATA_0
22
SD_DATA_1
23
GPIO5
24
U0RXD
25
U0TXD
26
XTAL_OUT
27
XTAL_IN
28
VDDD
29
VDDA
30
RES12K
31
EXT_RSTB
32
GND
33
C5
10uF
J16 CON1
1
J6 CON1
1
R2 499R±1%
J17 CON1
1
Espressif
! /! 12 22
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2020.07