Data Sheet

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5. Schematics
5. Schematics
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Figure 5-1. ESP-WROOM-02 Schematics
GPIO15
RST SD_D1 SD_D0 SD_CLK SD_CMD SD_D3 SD_D2
SD_CLK SD_CMD SD_D2
UTXD
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
GND
GND
VDD33
GND
GNDGND
GND
GND
VDD33
GND
VDD33
GND
GND
GND
GND
VDD33
GND
GND
GND
VDD33
GND
GND
GND
Pin.1 3V3 Pin.2 CH_PU/EN Pin.3 IO14 Pin.4 IO12 Pin.5 IO13 Pin.6 IO15 Pin.7 IO2 Pin.8 IO0 Pin.9 GND
Pin.10 IO4 Pin.11 RXD Pin.12 TXD Pin.13 GND Pin.14 IO5 Pin.15 RST Pin.16 TOUT Pin.17 IO16 Pin.18 GND
Pin.19 GND(P_GND)
ANT1
1 2
C2 10pF
D1 ESD3.3V88D-C
R1
12K±1%
C1
10pF
C3 0.1uF
C4 8.2pF
U3 FLASH
/CS
1
DO
2
/WP
3
GND
4
DI
5
CLK
6
/HOLD
7
VCC
8
L1 2.4pF
R3 200
C6 1uF
U1
26MHz
±
10ppm
XIN
1
GND
2
XOUT
3
GND
4
U2
ESP8266EX
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
L2 1.5nH
Espressif
# /#12 17
2017.10