Datasheet

6 Peripheral Schematics
6 Peripheral Schematics
This is the typical application circuit of the module connected with peripheral components (for example, power
supply, antenna, reset button, JTAG interface, and UART interface).
5
5
4
4
3
3
2
2
1
1
D D
C C
B B
A A
NC: No component.
ESP32-C3-MINI-1
ESP32-C3-MINI-1U
IO4 IO5 IO6 IO7 IO8
IO2
IO3
EN
IO9 IO0 IO1 IO10
RXD0
TXD0
EN
TMS
TDI
TCK
TDO
IO19
IO18
USB_D-
USB_D+
GND
VDD33
GND
GND
GND GND
GND
VDD33
GND
GND
GNDGND
VDD33
GND
C3
TBD
R7 NC
C6
TBD
C4 0.1uF
R2 0
R9 10K
JP2
Boot Option
1
1
2
2
U1
GND
1
3V3
3
IO9
23
NC
4
IO2
5
IO3
6
NC
7
NC
9
NC
10
NC
15
IO10
16
NC
17
IO4
18
IO5
19
NC
32
TXD0
31
RXD0
30
NC
34
NC
33
IO18
26
NC
29
NC
28
IO19
27
IO7
21
IO8
22
IO0
12
IO1
13
GND
52
IO6
20
NC
35
NC
24
EPAD
49
GND
2
GND
53
GND
51
GND
50
EN
8
GND
36
GND
37
GND
38
GND
39
GND
40
GND
41
GND
42
GND
43
GND
44
GND
45
GND
46
GND
47
GND
48
GND
14
GND
11
NC
25
R6 0
JP3
USB
1
1
2
2
C1
10uF
C8 12pF(NC)
C2
0.1uF
C7 12pF(NC)
SW1
JP4
UART
1
1
2
2
3
3
4
4
X1
32.768kHz(NC)
12
JP1
JTAG
1
1
2
2
3
3
4
4
R6 0(NC)
R8 10KR5 0(NC)
R1
TBD
R4 0
C5
TBD
Figure 7: Peripheral Schematics
• Soldering the EPAD to the ground of the base board is not a must, however, it can optimize thermal
performance. If you choose to solder it, please apply the correct amount of soldering paste.
• To ensure that the power supply to the ESP32-C3 chip is stable during power-up, it is advised to add an
RC delay circuit at the EN pin. The recommended setting for the RC delay circuit is usually R = 10 kΩ and
C = 1 µF. However, specific parameters should be adjusted based on the power-up timing of the module
and the power-up and reset sequence timing of the chip. For ESP32-C3’s power-up and reset sequence
timing diagram, please refer to Section Power Scheme in ESP32-C3 Series Datasheet.
Espressif Systems 24
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ESP32-C3-MINI-1 & MINI-1U Datasheet v1.0