Schematics

v2.0 Redesginwithesp8285. Mar.18,2018 Xiangnan.Qu
XiangnanQu
v1.0 Initialproductrelease. May26,2015 Xiangnan.Qu
XiangnanQu
ESP8266
I/O
XiangnanQu
PWR
TXD
REV Description DATE BY
ESP8285
100nF
1uF
10uF
3.3nH 1.0pF
2.2nH
100nF 100nF
12k1%
8pF 8pF
100nF
100nF
10k
10k
10k
10k
100nF
NX3225SA-26.000000MHZ-G4
100R
10k
10uF
ETA3410D2I-T
WPN201610MR47MT
100k1%22k1%
10uF
10uF
10uF
Grove
BL-HB337A-AV-TRB
BL-HGE37A-AV-TRB
1k
1k
2N7002,215
1k
1k
SKRPABE010
SKRPABE010
VDDA
1
LNA
2
VDD3P3
3
VDD3P3
4
VDD_RTC
5
TOUT
6
CHIP_EN
7
XPD_DCDC
8
MTMS
9
MTDI
10
VDDPST
11
MTCK
12
MTDO
13
GPIO2
14
GPIO0
15
GPIO4
16
VDDPST
17
SD_DATA_2
18
SD_DATA_3
19
SD_CMD
20
SD_CLK
21
SD_DATA_0
22
SD_DATA_1
23
GPIO5
24
U0RXD
25
U0TXD
26
XTAL_OUT
27
XTAL_IN
28
VDDD
29
VDDA
30
RES12K
31
EXT_RSTB
32
GND
33
U1
C9
C3
C8
L2 L1
C7
C4 C5
R2
C1 C2
C11
C10
R5
R4
R6
R1
C6
X1
1
X2
3
GND
4
GND
2
X1
R3
R27
C19
AGND
3
AVIN
7
EN
5
FB
4
MODE
6
PAD
9
PGND
1
PVIN
8
SW
2
U6
L4
R28R29
C21
C26
C27
J3
1
2
3
4
D4
D5
R21
R22
Q1
R8
R9 TP1
TP2
VSYS
GND
TP5
TP6
1
2 3
4
SW1
1
2 3
4
SW2
3V3
3V3
3V3
3V3
3V3
3V3
3V3
3V3
3V3
U0RXD/SPICS1/GPIO3
U0RXD/SPICS1/GPIO3
U0TXD/GPIO1
U0TXD/GPIO1
RST
RST
RST
HSPICS/GPIO15
SPICS2/GPIO0
SPICS2/GPIO0
U1TXD/GPIO2
U1TXD/GPIO2
VSYS
VSYS
VSYS
SDIO
UART
FLASH
MTDO GPIO0 GPIO2
1
1 1
1
X X
0
0
0
SeeedStudio
TITLE:
Design: Check:
Date: Vision:
A
B
C
D
1 2 3 4 5 6
A
B
C
D
1 2 3 4 5 6
2018/3/27下午3:08
CC-BY-SA
SeeedStudio
TITLE:
Design: Check:
Date: Vision:
A
B
C
D
1 2 3 4 5 6
A
B
C
D
1 2 3 4 5 6
2018/3/27下午3:08
CC-BY-SA
SeeedStudio
TITLE:
Design: Check:
Date: Vision:
A
B
C
D
1 2 3 4 5 6
A
B
C
D
1 2 3 4 5 6
2018/3/27下午3:08
CC-BY-SA