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2
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D D
C C
B B
A A
Title
Number RevisionSize
A2
Date: 2019-07-27 Sheet of
File: E:\新品\..\Nodemcu V3-340原理图 .SchDocDrawn By:
esp8266
GPIO16
nRST
EN
GPIO0
GPIO2R4 12k
R10 12k
R3 12k
GND
VDD3V3
GPIO15
R5 12k
MTDO
EN
GPIO0
GPIO2
GPIO15
GND
VDD3V3
ADC
GPIO14
GPIO12
GPIO13
TXD0
RXD0
GPIO4
GPIO5
MTCK
MTDI
MTMS
MATTERS NEEDING ATTENTION
On every boot/reset/wakeup,
GPIO15 MUST keep LOW, GPIO2 MUST keep HIGH.
GPIO0 HIGH ->RUN MODE, LOW -> FLASH MODE.
When you need to use the sleep mode,GPIO16 and RST should be connected,
and GPIO16 will output LOW to reset the system at the time of wakeup.
+
C2
100uF TAJB107M006RNJ
GND
nRSTR8 12k
C1
100nF
GND
RST
1
ADC/TOUT
2
EN
3
GPIO16/WAKE
4
GPIO14/HSPICLK
5
GPIO12/HSPIQ
6
GPIO13/HSPID/CTS0/RXD2
7
VDD
8
GND
15
GPIO15/HSPICS/RTS0/TXD2
16
GPIO2/TXD1
17
GPIO0/SPICS2
18
GPIO4
19
GPIO5
20
GPIO3/RXD0
21
GPIO1/SPICS1/TXD0
22
SPI_MOSI/SD_CMD
9
SPI_MISO/SD_D0
10
GPIO9/SD_D2
11
GPIO10/SPI_CS/SD_D3
12
SPI_INT/SD_D1
13
SPI_CLK/SD_CLK
14
U2
ESP_12
VDD3V3
SPI_MOSI
SPI_MISO
GPIO9 GPIO10
SPI_INT
SPI_CLK
POWER
GND/ADJ
1
VOUT
2
VIN
3
U4 NCP1117ST33T3GVDD5V VDD3V3
GND
C8
10uF
GND GND
C7
10uF 25V
GPIO16
nRST
EN
GPIO14
GPIO12
GPIO13
GPIO0
GPIO2
GPIO15
TXD0
RXD0
GPIO4
GPIO5
TXD2
RXD2
TXD1
ADC_EX
GND
PIN1
1
PIN2
2
PIN3
3
PIN4
4
PIN5
5
PIN6
6
PIN7
7
PIN8
8
PIN9
9
PIN10
10
PIN11
11
PIN12
12
PIN13
13
PIN14
14
PIN15
15
J1
THT_Male_P_1x15
PIN1
1
PIN2
2
PIN3
3
PIN4
4
PIN5
5
PIN6
6
PIN7
7
PIN8
8
PIN9
9
PIN10
10
PIN11
11
PIN12
12
PIN13
13
PIN14
14
PIN15
15
J2
THT_Male_P_1x15
GPIO3
VU
GPIO1
HSPICLK
HSPIQ
HSPID
HSPICS
D0
D1
D2
D3
D4
D5
D6
D7
D8
RX
TX
A0
VDD3V3
GND
VDD3V3
GND
VIN
GND
VDD3V3
GND
GPIO10
SPI_INT
SPI_CLK
SPI_MOSI
SPI_MISO
GPIO9
SD_CLK
SD_D0
SD_CMD
SD_D1
SD_D3
SD_D2
S3
S2
VDDUSB
IO-PIN
GPIO16
R2
470
R6
0(NC)
VDD3V3
GND
S1
KEY_RST/USER
nRST
R7
470 R9
470
GND
S2
KEY_FLASH
GPIO0
LED1
BLUE
Use this resistor only in sleep mode
This LED SHOULD BLUE or WHITE to make sure
enough voltage drop
ADC
R12
220k(1%)
R13
100k(1%)
GND
ADC_EX
Use 1% resistor here.
KEY
ADC
Nodemcu v3-CH340 sch
GNDGND
VDD5V
D_N
D_P
GND
1
TXD
2
UD-
6
XI
7
XO
8
CTS
9
RXD
3
RTS
14
R232
15
DTR
13
V3
4
VCC
16
RI
11
DCD
12
DSR
10
UD+
5
U3
CH340G
R19 470
R20 470
TXD0
RXD0
GND
GNDGND
1
2 3
4
X1
12MHz(2520/3225)
XO
XI
XI
XO
C4
22pF
C5
22pF
GND GND
VCC
1
D-
2
D+
3
ID
4
GND
5
MH1
6
MH2
7
MH3
8
MH4
9
U?
USB_Micro_5S_B
nRST
GPIO0
C18
100nF
C6
100nF
VDD5V
GND
GND
C17
10uF
GND
D1
1N4007/M7(DO-214AC)
USB TO UART
VT2
S8050
VT1
S8050
R15 12k
R14 12k
VDDUSB
OTG_ID
Auto program circuit
DTR RTS RST GPIO0
1 1 1 1
0 0 1 1
1 0 0 1
0 1 1 0
内置晶振时可省略
G
VU
S1
SC
SD
SK
G
3V
EN
RST
G
VIN
3V
G
G
3V
PIC101
PIC102
CO
PIC201
PIC202
PIC401
PIC402
PIC501
PIC502
PIC601
PIC602
PIC701
PIC702
PIC801
PIC802
PIC1701
PIC1702
PIC1801
PIC1802
PID101
PID102
PIJ101
PIJ102
PIJ103
PIJ104
PIJ105
PIJ106
PIJ107
PIJ108
PIJ109
PIJ1010
PIJ1011
PIJ1012
PIJ1013
PIJ1014
PIJ1015
PIJ201
PIJ202
PIJ203
PIJ204
PIJ205
PIJ206
PIJ207
PIJ208
PIJ209
PIJ2010
PIJ2011
PIJ2012
PIJ2013
PIJ2014
PIJ2015
PILED101
PILED102
PIR201
PIR202
PIR301
PIR302
PIR401
PIR402
PIR501
PIR502
PIR601
PIR602
PIR701
PIR702
PIR801
PIR802
PIR901
PIR902
PIR1001
PIR1002
PIR1201
PIR1202
PIR1301
PIR1302
PIR1401
PIR1402
PIR1501
PIR1502
PIR1901
PIR1902
PIR2001
PIR2002
PIS101
PIS102
PIS201
PIS202
PIU201
PIU202
PIU203
PIU204
PIU205
PIU206
PIU207
PIU208
PIU209
PIU2010
PIU2011
PIU2012
PIU2013
PIU2014
PIU2015
PIU2016
PIU2017
PIU2018
PIU2019
PIU2020
PIU2021
PIU2022
PIU301
PIU302
PIU303
PIU304
PIU305
PIU306
PIU307
PIU308
PIU309
PIU3010
PIU3011
PIU3012
PIU3013
PIU3014
PIU3015
PIU3016
PIU401
PIU402
PIU403
PIU?01
PIU?02
PIU?03
PIU?04
PIU?05
PIU?06
PIU?07
PIU?08
PIU?09
PIVT101
PIVT102
PIVT103
PIVT201
PIVT202
PIVT203
PIX101
PIX102
PIX103
PIX104
PIJ102
PIR1201
PIR1302
PIU202
NL
PIJ101
PIR1202
NL
PIU306
PIU?02
NL
PIU305
PIU?03
NL
PIJ1012
PIR502
PIU203
NL
PIC102
PIC202
PIC402
PIC502
PIC602
PIC702
PIC802
PIC1702
PIC1802
PIJ1010
PIJ1014
PIJ207
PIJ2014
PIR1001
PIR1301
PIS102
PIS202
PIU2015
PIU301
PIU401
PIU?05
PIU?06
PIU?07
PIU?08
PIU?09
PIX102
PIX104
NL
PIJ204
PIR302
PIR902
PIU2018
PIVT203
NL
PIJ205
PIR402
PIU2017
NL
PIJ203
PIU2019
NL
PIJ202
PIU2020
NL
PIJ105
PIU2011
NL
PIJ104
PIU2012
NL
PIJ209
PIU206
NL
PIJ2010
PIU207
NL
PIJ208
PIU205
NL
PIJ2011
PIR1002
PIU2016
NL
PIJ201
PILED102
PIR602
PIU204
NL
PIC601
PIU304
PILED101
PIR201
PIR601
PIR701
PIS101
PIR901
PIS201
PIR1401
PIVT201
PIR1402
PIU3014
PIVT102
PIR1501
PIVT101
PIR1502
PIU3013
PIVT202
PIR1902
PIU303
PIR2002
PIU302
PIU309
PIU3010
PIU3011
PIU3012
PIU3015
PIC101
PIJ1013
PIR702
PIR802
PIU201
PIVT103
NL
PIU?04
NL
PIJ2012
PIR2001
PIU2021
NL
PIJ109
PIU2014
NL
PIJ106
PIU2013
NL
PIJ108
PIU2010
NL
PIJ107
PIU209
NL
PIJ2013
PIR1901
PIU2022
NL
PIC201
PIC801
PIJ1011
PIJ206
PIJ2015
PIR202
PIR301
PIR401
PIR501
PIR801
PIU208
PIU402
NL
PIC701
PIC1701
PIC1801
PID102
PIU3016
PIU403
PID101
PIJ103
PIU?01
NL
PIJ1015
NL
PIC501
PIU307
PIX103
NL
PIC401
PIU308
PIX101
NL
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