Datasheet

5 Module Schematics
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.
ESP32-C3FN4
ESP32-C3FH4
ESP32-C3-MINI-1U(pin-out)
NC: No component.
GPIO19
CHIP_EN
GPIO4
GPIO5
GPIO6
GPIO7
GPIO8
U0RXD
GPIO18
LNA_IN
GPIO9
GPIO10
GPIO0
GPIO1
SPICS0
GPIO2
GPIO3
RF_ANT
U0TXD
GPIO2
GPIO3
CHIP_EN
GPIO1 GPIO0 GPIO10 GPIO6 GPIO7 GPIO8 GPIO9
GPIO18
GPIO19
U0RXD
U0TXD
GPIO4 GPIO5
GND
VDD33
GND
GND
GNDGND GND
GND GND
GND
VDD33
GND GND
VDD33
VDD33
GND
GND
GND
GND GND
VDD_SPI
VDD33
GND
GND
GND
Title
Size
Page Name Re v
Date: Sheet o f
Confidential and Proprietary
<02_ESP32-C3-MINI-1U> V1.1
ESP32-C3-MINI-1U
A4
2 2Tuesday, March 23, 2021
Title
Size
Page Name Re v
Date: Sheet o f
Confidential and Proprietary
<02_ESP32-C3-MINI-1U> V1.1
ESP32-C3-MINI-1U
A4
2 2Tuesday, March 23, 2021
Title
Size
Page Name Re v
Date: Sheet o f
Confidential and Proprietary
<02_ESP32-C3-MINI-1U> V1.1
ESP32-C3-MINI-1U
A4
2 2Tuesday, March 23, 2021
C1
TBD
R8 10K(NC)
C9
TBD
D1
ESD
ANT1
IPEX
1
4 2 3
C12
0.1uF
R1 0
U3
ESP32-C3-MINI-1U
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
C10
0.1uF
C3
1uF
R2 499
L1 2.0nH
C2
TBD
C8
TBD
C6
0.1uF
L2 TBD
C5
10uF
C4
10nF
C7
0.1uF
C11
1uF
U2
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
Figure 6: ESP32C3MINI1U Schematics
Espressif Systems 23
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ESP32-C3-MINI-1 & MINI-1U Datasheet v1.0