Datasheet

5 Module Schematics
5 Module Schematics
This is the reference design of the module.
5
5
4
4
3
3
2
2
1
1
D D
C C
B B
A A
The values of C8, L2 and C9
vary with the actual PCB board.
The values of C1 and C2 vary with
the selection of the crystal.
The value of R1 varies with the actual
PCB board.
Pin.16
IO2
Pin.15
IO3
Pin.2
EN
Pin.3
IO4
Pin.4
IO5
Pin.5
IO6
Pin.6
IO7
Pin.7
IO8
Pin.8
IO9
Pin.9
GND
Pin.11
RXD
Pin.12
TXD
Pin.13
IO18
Pin.1
3V3
PCB ANTENNA
Pin.18
IO0
Pin.17
IO1
Pin.14
IO19
Pin.10
IO10
EPAD
ESP32-C3-WROOM-02(pin-out)
NC: No component.
GPIO19
CHIP_EN
GPIO4
GPIO5
GPIO6
GPIO7
GPIO8
U0RXD
GPIO18
LNA_IN
GPIO9
GPIO10
GPIO0
GPIO1
SPICS0
SPID
SPIQ
SPICLK
SPIWP
SPIHDGPIO2
GPIO3
RF_ANT
U0TXD
GPIO6
GPIO7
GPIO8
GPIO9 U0RXD
GPIO18
SPICLK
SPICS0
SPIHD
CHIP_EN
GPIO19
U0TXD
GPIO10
GPIO4
GPIO5
GPIO0
GPIO1
GPIO3
GPIO2
SPIWP
SPID
SPIQ
GND
VDD33
GND
GND
GNDGND GND
GND GND
GND
VDD33
GND GNDGND
VDD33
VDD_SPI
VDD33
GND
VDD_SPI
VDD33
GND
GND
GND
VDD33
GND
GND GND
Title
Size Page Name Rev
Date: Sheet o f
Confidential and Proprietary
<02_ESP32-C3-WROOM-02>
V1.6
ESP32-C3-WROOM-02
A3
2 2Wednesday, August 11, 2021
Title
Size Page Name Rev
Date: Sheet o f
Confidential and Proprietary
<02_ESP32-C3-WROOM-02>
V1.6
ESP32-C3-WROOM-02
A3
2 2Wednesday, August 11, 2021
Title
Size Page Name Rev
Date: Sheet o f
Confidential and Proprietary
<02_ESP32-C3-WROOM-02>
V1.6
ESP32-C3-WROOM-02
A3
2 2Wednesday, August 11, 2021
C1
TBD
C9
TBD
D1
ESD
U3 FLASH-3V3
/CS
1
DO
2
/WP
3
GND
4
DI
5
CLK
6
/HOLD
7
VCC
8
R4 100
R7 100
R6 100
C12
0.1uF
R1 0
ANT1
PCB_ANT
1
2
R5 100
C10
0.1uF
C3
1uF
R2 499
R3 100
L1 0
C2
TBD
C8
TBD
C6
0.1uF
L2 TBD
C5
10uF
C4
10nF
C7
NC
C11
1uF
U2 ESP32-C3
LNA_IN
1
VDD3P3
2
VDD3P3
3
XTAL_32K_P
4
XTAL_32K_N
5
GPIO2
6
CHIP_EN
7
MTMS
9
MTDI
10
VDD3P3_RTC
11
MTCK
12
MTDO
13
GPIO8
14
GPIO9
15
GPIO10
16
VDD3P3_CPU
17
VDD_SPI
18
SPIHD
19
SPIWP
20
SPICS0
21
SPICLK
22
SPID
23
SPIQ
24
U0RXD
27
U0TXD
28
XTAL_N
29
XTAL_P
30
GND
33
GPIO3
8
VDDA
32
VDDA
31
GPIO19
26
GPIO18
25
U1
40MHz(±10ppm)
XIN
1
GND
2
XOUT
3
GND
4
R8
10K(NC)
Figure 5: ESP32C3WROOM02 Schematics
Espressif Systems 21
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ESP32-C3-WROOM-02 & WROOM-02U Datasheet v1.0