Schematic Checklist - Espressif Systems ESP32-C6 Series Hardware Design Manuallines

2 Schematic Checklist

2 Schematic Checklist
The core circuitry of ESP32-C6 requires only 20 electrical components (resistors, capacitors, and inductors), one
crystal and one SPI flash memory chip (optional for the QFN32 package). The high integration of ESP32-C6
allows for simple peripheral circuit design. This chapter details ESP32-C6 schematics.
ESP32-C6 consists of variants in two packages, namely the QFN40 package and the QFN32 package. The main
difference between these two packages is whether the flash is integrated into the chip's package.
ESP32-C6 schematics are shown in Figure
5
D
VDD33
C3
1uF
VDD33
GND
L1
C
C6 C7 C8
10uF 1uF 0.1uF
GND GND GND
ANT1
1 RF_ANT L2
2
C11
PCB_ANT
TBD
GND GND
The values of C11, L2 and C12
B
vary with the actual PCB board.
CHIP_EN:
H Activate chip;
L Disable chip.
This pin could not be float.
A
5
Espressif Systems
1 and Figure
4
GND
The values of C1 and C4 vary with
the selection of the crystal.
C1
The value of R4 varies with the
TBD
actual PCB board. R4 could be a
resistor or inductor, the initial
value is suggested to be 24 nH.
C2
10nF
GND
2.0nH
GND
C9
0.1uF
GND
TBD LNA_IN 1
ANT
2
VDDA3P3
3
C12
VDDA3P3
CHIP_EN 4
CHIP_EN
TBD 5
VDDPST1
GPIO0 6
XTAL_32K_P
GPIO1 7
XTAL_32K_N
GPIO2 8
GND
GPIO2
GPIO3 9
GPIO3
GPIO4 10
MTMS
VDD33
C15 U1
0.1uF
GND
Figure 1: ESP32-C6 QFN40 Schematic
4
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2 respectively.
3
GND
GND
Y1
C4
TBD
GND
40MHz(±10ppm)
R17 0
GND
C10
0.1uF
30
U0RXD
29 R3 499
U0TXD
28
VDDPST2
27
GPIO15
26 R16 0
SPID
25 R15 0
SPICLK
24 R14 0
SPIHD
23
VDD_SPI
22
R13 0
SPIWP
21 R10 0
SPIQ
C16 C17
0.1uF 1uF
ESP32-C6
GND GND
3
6
ESP32-C6 Series Hardware Design Guidelines v1.0
2
GPIO23
GPIO22
GPIO21
GPIO20
GPIO19
GPIO18
VDD_SPI
VDD33
R8
U0RXD
U0TXD
GPIO15 10K(NC)
SPID
SPICLK SPICS0 1
/CS DI
SPIHD
SPICLK 6
CLK DO
SPIWP
SPIQ SPIHD 7
/HOLD /WP
U2 FLASH
VDD_SPI
NC: No component.
GND
2
1
D
C
5 SPID
2 SPIQ
3 SPIWP
B
A
1