1 2 3 4 5 6 7 8

D1
+5V
Power Supply PWR_FLAG PWR_FLAG
ESP-WROOM-32
A K

A
2 1
1N5822/SS34/SMA GND MODULE A

G1
LED/RED/0603
LiPo Charger
PWRLED1

A
2
A
2
FET1 P-MOS
D2 R14
+3.3V
WPM2015-3/TR 1N5822/SS34/SMA +3.3V

D3

S2

K
1
CHARGING1 R3 U5 NA/R0603
K
1
A K
2 1 PWR_FLAG
+3.3V 2
3V3 GPIO0/ADC2_CH1/TOUCH1/RTC_GPIO11/CLK_OUT1/EMAC_TX_CLK
25 GPIO0
LED/YELLOW/0603 2.2k/R0603 R5
1
GND GPIO1/U0TXD/CLK_OUT3/EMAC_RXD2
35 GPIO1/U0TXD
L1 GND
2.2k/R0603

U3 GPIO2
10k/R0603
+5V_USB

2.2uH/1.5A/DCR<0.1R/CD32 15 24
NA/R0603 GND GPIO2/ADC2_CH2/TOUCH2/RTC_GPIO12/HSPIWP/HS2_DATA0/SD_DATA0
U1 4 3 38 34 GPIO3/U0RXD

47uF/6.3V/20%/X5R/C0805

47uF/6.3V/20%/X5R/C0805
IN LX GND GPIO3/U0RXD/CLK_OUT2
4
VCC VBAT
3 1
EN Ra
R11
GPIO4/ADC2_CH0/TOUCH0/RTC_GPIO10/HSPIHD/HS2_DATA1/SD_DATA1/EMAC_TX_ER
26 GPIO4
BAT1 2 5 4.99k/1%/R0603 29 GPIO5
C1 BATTERY
GND FB GPIO5/VSPICS0/HS1_DATA6/EMAC_RX_CLK
1 1 + R12 +3.3V 39 20 GPIO6/SD_CLK

C6

C7
CHRGb Rb GND THERMAL_PAD GPIO6/SD_CLK/SPICLK/HS1_CLK/U1CTS
47uF/6.3V/20%/X5R/C0805
CHARGER 2 SY8089AAAC(SOT23-5) 1.1k/1%/R0603
GPIO7/SD_DATA0/SPIQ/HS1_DATA0/U2RTS
21 GPIO7/SD_DATA0
R13
2 5 R4 2.2k/R0603 - 3 22 GPIO8/SD_DATA1
GND PROG Rprog EN GPIO8/SD_DATA1/SPID/HS1_DATA1/U2CTS
R1

R2

DW02S Vout=0.6*(1+Ra/Rb)
GPIO9/SD_DATA2/SPIHD/HS1_DATA2/U1RXD
17 GPIO9/SD_DATA2
BL4054B-42TPRN(SOT23-5) 1k/R0603
32
NC GPIO10/SD_DATA3/SPIWP/HS1_DATA3/U1TXD
18 GPIO10/SD_DATA3
IBAT = 1000/Rprog = 455mA ESP_EN 19 GPIO11/SD_CMD
GPIO11/SD_CMD/SPICS0/HS1_CMD/U1RTS
GPIO12/ADC2_CH5/TOUCH5/RTC_GPIO15/MTDI/HSPIQ/HS2_DATA2/SD_DATA2/EMAC_TXD3
14 GPIO12
B GND GND GND GND GND GND GND GND GND 16 GPIO13 B
GPIO13/ADC2_CH4/TOUCH4/RTC_GPIO14/MTCK/HSPID/HS2_DATA3/SD_DATA3/EMAC_RX_ER
GPIO14/ADC2_CH6/TOUCH6/RTC_GPIO16/MTMS/HSPICLK/HS2_CLK/SD_CLK/EMAC_TXD2
13 GPIO14
GPIO15/ADC2_CH3/TOUCH3/MTDO/HSPICS0/RTC_GPIO13/HS2_CMD/SD_CMD/EMAC_RXD3
23 GPIO15
GPIO16/HS1_DATA4/U2RXD/EMAC_CLK_OUT
27 GPIO16
GPIO17/HS1_DATA5/U2TXD/EMAC_CLK_OUT_180
28 GPIO17
GPIO18/VSPICLK/HS1_DATA7
30 GPIO18
GPIO19/VSPIQ/U0CTS/EMAC_TXD0
31 GPIO19
33 GPIO21
ESP-WROOM-32 GPIO21/VSPIHD/EMAC_TX_EN
36 GPIO22
GPIO22/VSPIWP/U0RTS/EMAC_TXD1
+5V_USB +3.3V 37 GPIO23
U2
MODULE GPIO23/VSPID/HS1_STROBE
10 GPIO25
GPIO25/DAC_1/ADC2_CH8/RTC_GPIO6/EMAC_RXD0
C4 22uF/6.3V/20%/X5R/C0603
19 3 R6 220R/R0603 GPIO3/U0RXD 11 GPIO26
USB-UART1 GND VCC TXD GPIO26/DAC_2/ADC2_CH9/RTC_GPIO7/EMAC_RXD1
C5 100nF/50V/20%/Y5V/C0603
5
V3 RXD
4 R7 220R/R0603 GPIO1/U0TXD GPIO27/ADC2_CH7/TOUCH7/RTC_GPIO17/EMAC_RX_DV
12 GPIO27
GND
ESP_EN GPIO32/XTAL_32K_P/ADC1_CH4/TOUCH9/RTC_GPIO9
8 GPIO32
8 16 9 GPIO33
0
0

GND GND RTS# GPIO33/XTAL_32K_N/ADC1_CH5/TOUCH8/RTC_GPIO8

GPI34

3
1 11 6
VBUS CTS# R8 GPI34/ADC1_CH6/RTC_GPIO4
2 7 15 Q2 Auto program 7 GPI35
D- UD- DTR# GPI35/ADC1_CH7/RTC_GPIO5
3 6 12 1 BC817-40(SOT23) DTR RTS->EN IO0 4 GPI36/SENSOR_VP
D+ UD+ DSR# 1k/R0603 GPI36/SENSOR_VP/ADC_H/ADC1_CH0/RTC_GPIO0
1 1 1 1 GPI39/SENSOR_VN

2
4 14 5
ID DCD# GPI39/SENSOR_VN/ADC1_CH3/ADC_H/RTC_GPIO3
GND
5 C2 27pF/50V/5%/C0G/C0603
9
XI RI#
13 0 0 1 1
C C
1

3 20 1 0 0 1
Q1 NOS# ESP-WROOM-32
0
0

C3 27pF/50V/5%/C0G/C0603
10 17 0 1 1 0
2

XO IR# 2
Q12MHz/20pF/10ppm/4P/3.2x2.5mm R9
Q3
CH340T(SSOP20W) 1 BC817-40(SOT23)
1k/R0603
GPIO0
GND GND GND
3

A2
2
MISB-SWMM-5B-LF(USB_MICRO) R10
CC BAT54C(SOT23-3)
3 U4
GND

GND1 220R/R0603

A1
1
USB to UART D_Com1
D_Com GPIO2

Fiducials:
FID1 FID2 FID3 Internal Bootstrapping Resistors
Fiducial Fiducial Fiducial
MTDI/GPIO12: Pull-Down
GPIO0: Pull-Up
D D
GPIO2: Pull-Down

Extensions Software Selectable Pins MTDO/GPIO15:

GPIO4: Pull-Down
Pull-Up

Reset Interface Signal

EMAC_MDC_out
Pin
GPIO5: Pull-Up

EXT1
+3.3V

EXT2
Button EMAC
EMAC_MDI_in
EMAC_MDO_out
EMAC_CRS_out
Any GPIO

Pin Default
Voltage of Internal LDO(VDD_SDIO)
3.3V 1.8V

1 1 EMAC_COL_out GPIO12/MTDI Pull-Down 0 1

2 ESP_EN 2 GPIO23
GND
ESP_EN Booting Mode
Bootstrapping Pins
I2CEXT0_SCL_in
3 GPI36/SENSOR_VP 3 GPIO22 Pin Default SPI Flash Boot Download Boot Settings
I2CEXT0_SDA_in
4 GPI39/SENSOR_VN 4 GPIO1/U0TXD I2CEXT1_SCL_in GPIO0 Pull-Up 1 0
5 GPI34 5 GPIO3/U0RXD I2CEXT1_SDA_in
GPIO2 Pull-Down Don't-care 0

6 GPI35 6 GPIO21 I2C I2CEXT0_SCL_out Any GPIO Debugging Log on U0TXD During Booting

7 GPIO32 7 I2CEXT0_SDA_out Pin Default U0TXD Toggling U0TXD Silent

GND
8 GPIO33 8 GPIO19 I2CEXT1_SCL_out
GPIO15/MTDO Pull-Up 1 0
E 9 GPIO25 9 GPIO18 Timing of SDIO Slave E
I2CEXT1_SDA_out
10 GPIO26 10 GPIO5 Pin Default Falling-edge:Input Rising-edge:Input Rising-edge:Input
Falling-edge:Output Rising-edge:Output Falling-edge:Output Rising-edge:Output
GPIO27 GPIO17
1

11 11
12 GPIO14 12 GPIO16 RST1 HSPIQ_in/_out GPIO15/MTDO Pull-Up 0 0 1 1
13 GPIO12 13 GPIO4 IT-1185AU2-160G-G-TR HSPID_in/_out GPIO5 Pull-Up 0 1 0 1
GPIO0
2

14 14 HSPICLK_in/_out
GND
15 GPIO13 15 GPIO2 HSPI_CS0_in/_out
16 GPIO9/SD_DATA2 16 GPIO15 HSPI_CS1_out
17 GPIO10/SD_DATA3 17 GPIO8/SD_DATA1 General HSPI_CS2_out
18 GPIO11/SD_CMD 18 GPIO7/SD_DATA0 Purpose VSPIQ_in/_out
Any GPIO
SPI
19 +5V 19 GPIO6/SD_CLK VSPID_in/_out
VSPICLK_in/_out
https://www.olimex.com
HN1x19 HN1x19 VSPI_CS0_in/_out
OLIMEX LTD.
VSPI_CS1_out
VSPI_CS2_out Sheet: /
GND File: ESP32-DevKit-Lipo_Rev_A1.sch
For more information refer to
esp_wroom_32_datasheet_en.pdf.
Title: ESP32-DevKit-Lipo
Size: A3 Date: 2018-09-14 Rev: A1
KiCad E.D.A. kicad (6.0.0-rc1-dev-478-gc120ae9e9) Id: 1/1
F F
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