1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8
A
B
C
D
E
F
A
B
C
D
E
F
Date:
KiCad E.D.A. 8.0.0
Rev: Size: A3
Id: 1/1
Title:
File: Seeed Studio XIAO nRF52840 v1.1.kicad_sch
Sheet: /
R16 1M_1%
C3 2.2uF
CHG0 RED
C25 2.2uF
R10 33R
R5 2.2k
OUT
1
GND EN
3
IN
4
GND
U6
C34 100nF
C35 100pF
C22 2.2uF
BAT0
C4 2.2uF
GND0
C32 15pF
C37 0.5pF
R9 100k
D1
VDD
1
CLK
2
DATA
3
GND@1
4
L/R
5
GND@2
6
MIC1
MSM261D3526H1CPM
C8 100nF
C2 10pF
R20 10k
C10 1nF
R17 499k_1%
TP1
TP2
C36 0.8pF
R14 10k
TP5
R15 10k
C33 15pF
TP3
C7 10pF
R18 2.7k
R12 2.7k
C31 820pF
C24 100nF
C9 2.2uF
K1
X2
32MHz
C6 2.2uF
~{CS}
1
DO
2
~{WP}
3
GND
4
DI
5
CLK
6
~{HOLD}
7
VCC
8
T
PAD
U7
R13 10k
BY DATE Description REV
C5 100nF
R7 2.2k
R4 10k
R3 2.2k
C29 2.2uF
S
1
GND
2
3
3
ANT1
P0.02_AIN0_LOW_A0_D0
1
P1.14_MISO_D9
10
P1.15_MOSI_D10
11
3V3
12
GND
13
5V
14
P0.03_AIN1_LOW_A1_D1
2
P0.28_AIN4_LOW_A2_D2
3
P0.29_AIN5_LOW_A3_D3
4
P0.04_AIN2_A4_D4
5
P0.05_AIN3_A5_D5
6
P1.11_TX_D6
7
P1.12_RX_D7
8
P1.13_SCK_D8
9
P0.15_I2S_SD
15
P0.19_I2S_SCK
16
P1.01_I2S_WS
17
P0.09/NFC1/RX1
18
P0.10/NFC2/TX1
19
P0.31_AIN7_BAT
20
P1.03_SCK1
21
P1.05_MISO1
22
P1.07_MOSI1
23
U4
XIAO-HALF-HOLE-23P
A1/B12/GND
A4/B9/VBUS
A5/CC1
A6/DP1
A7/DN1
A8/SBU1
B1/A12/GND
B4/A9/VBUS
B5/CC2
B6/DP2
B7/DN2
B8/SBU2
S1
S2
S3
S4
S1
S2
USB1
R8
DNP
1
2
3
Q1
PMOS_1.00.60.35MM
SDO/DA0
1
NC@1
10
NC@2
11
CS
12
SCL
13
SDA
14
SDX
2
SCX
3
INT1
4
VDDIO
5
GND@1
6
GND@2
7
VDD
8
INT2
9
U3
LSM6DS3TR-C
R11 33R
nRF52840
P0.29/AIN5@A10
A10
P0.02/AIN0@A12
A12
P1.15@A14
A14
P1.13@A16
A16
DEC2@A18
A18
P1.10@A20
A20
VDD@A22
A22
XC2@A23
A23
P0.31/AIN7@A8
A8
SWDCLK@AA24
AA24
DCCH@AB2
AB2
P0.16@AC11
AC11
P0.18/RESET@AC13
AC13
P0.19@AC15
AC15
P0.21@AC17
AC17
P0.23@AC19
AC19
P0.25@AC21
AC21
SWDIO@AC24
AC24
DECUSB@AC5
AC5
P0.14@AC9
AC9
P0.15@AD10
AD10
P0.17@AD12
AD12
VDD@AD14
AD14
P0.20@AD16
AD16
P0.22@AD18
AD18
VBUS@AD2
AD2
P0.24@AD20
AD20
P1.00@AD22
AD22
VDD@AD23
AD23
D-@AD4
AD4
D+@AD6
AD6
P0.13@AD8
AD8
VDD@B1
B1
P0.28/AIN4@B11
B11
P0.03/AIN1@B13
B13
P1.14@B15
B15
P1.12@B17
B17
P1.11@B19
B19
XC1@B24
B24
DCC@B3
B3
DEC4@B5
B5
VSS@B7
B7
P0.30/AIN6@B9
B9 DEC1@C1
C1
P0.00/XL1@D2
D2
DEC3@D23
D23
DEC6@E24
E24
P0.01/XL2@F2
F2
VSS_PA@F23
F23
P0.26@G1
G1
VSS_PAD
G74
P0.27@H2
H2
ANT@H23
H23
P0.04/AIN2@J1
J1
P0.10/NFC2@J24
J24
P0.05/AIN3@K2
K2
P0.06@L1
L1
P0.09/NFC1@L24
L24
P0.07@M2
M2
P0.08@N1
N1
DEC5@N24
N24
P1.08@P2
P2
P1.07@P23
P23
P1.09@R1
R1
P1.06@R24
R24
P0.11@T2
T2
P1.05@T23
T23
P0.12@U1
U1
P1.04@U24
U24
P1.03@V23
V23
VDD@W1
W1
P1.02@W24
W24
VDDH@Y2
Y2
P1.01@Y23
Y23
U1
1 2
X1
32.768KHz
C30 2.2uF
OUT
A1
IN
A2
TS
B1
ISET
B2
PRETERM
C1
VSS
C2
U2
P0.22_QSPI_SIO_2
GND
P0.25_QSPI_CSN
VIN
P0.20_QSPI_SIO_0
GND
P1.10_MIC_PWR
3V3
GND
VBUS
P0.14_~{READ_BAT}
P1.01_I2S_WS
SWDIO
P1.03_SCK1
P0.21_QSPI_SCK
GND
P0.09/NFC1/RX1
P0.10/NFC2/TX1
GND
GND
GND
3V3
SWDCLK
USB_D+
PWR_LED
P1.07_MOSI1
P1.05_MISO1
GND
6D_PWR
6D_PWR
SWDCLK
GND
SWDIO
RESET
USB_D-
P0.23_QSPI_SIO_3
3V3
RESET
P0.05_AIN3_A5_D5
P0.06_USER_BLUE
P0.30_USER_GREEN
P0.26_USER_RED
P0.06_USER_BLUE
INTERNAL_I2C_SCL
INTERNAL_I2C_SDA
INTERNAL_I2C_SCL GND
INTERNAL_I2C_SDA
6D_PWR
P0.04_AIN2_A4_D4
3V3
P0.09/NFC1/RX1
GND P0.31_AIN7_BAT
GND
GND
P0.10/NFC2/TX1
VBUS
P0.13_HICHG
3V3
3V3
GND
GND
GND
P0.17_~{CHG}
GND
GND
3V3
GND
GND
GND
GND
GND
P0.26_USER_RED
P0.24_QSPI_SIO_1
P0.25_QSPI_CSN
DEC4-6
GND
3V3
P0.17_~{CHG}
P0.16_PDM_DATA
P0.19_I2S_SCK
RESET
P0.15_I2S_SD
P0.03_AIN1_LOW_A1_D1
P0.28_AIN4_LOW_A2_D2
P0.02_AIN0_LOW_A0_D0
GND
P1.10_MIC_PWR
GND
P1.13_SCK_D8
GND
P1.11_TX_D6
P1.14_MISO_D9
P1.12_RX_D7
P1.15_MOSI_D10
GND
P0.30_USER_GREEN
P0.29_AIN5_LOW_A3_D3
P0.31_AIN7_BAT
P1.12_RX_D7
P1.05_MISO1
P1.03_SCK1
3V3
P1.13_SCK_D8
P1.07_MOSI1
GND
GND
DEC4-6
VBUS
VBUS
GND
3V3
GND
6D_PWR
GND
GND
INTERNAL_I2C_SCL
INTERNAL_I2C_SDA
6D_PWR
6D_INT1
USB_D+
USB_D-
P1.15_MOSI_D10
GND
GND
P0.13_HICHG
P1.14_MISO_D9
VBUS
P0.03_AIN1_LOW_A1_D1
GND
P0.17_~{CHG}
VBAT
P0.02_AIN0_LOW_A0_D0
P0.19_I2S_SCK
P0.05_AIN3_A5_D5
P1.11_TX_D6
P0.16_PDM_DATA
GND
P1.00_PDM_CLK
P0.28_AIN4_LOW_A2_D2
GND
P0.04_AIN2_A4_D4
GND
6D_INT1
GND
/CE
P1.01_I2S_WS
P0.15_I2S_SD
GND
VBAT
P0.29_AIN5_LOW_A3_D3
GND
P0.31_AIN7_BAT
GND
GND
GND
GND
GND
P0.14_~{READ_BAT}
GND
P0.20_QSPI_SIO_0
GND
P1.00_PDM_CLK
P0.21_QSPI_SCK
P0.24_QSPI_SIO_1
VBUS
GND
P0.22_QSPI_SIO_2
P0.23_QSPI_SIO_3
USB_D+
USB_D-
V1.0 2024.10.29
NTC:
Wenkang.Liu
use fixed 10k resistor between
the TS and VSS.
Disable Temp sense function,
Initail Version
Set P0.14 to output Sink only
to enable BAT voltage read;
U6
OUT
1
GND EN
3
IN
4
GND
D1
X2
32MHz
TP1
TP2
TP5
TP3
U1
P0.29/AIN5@A10
A10
P0.02/AIN0@A12
A12
P1.15@A14
A14
P1.13@A16
A16
DEC2@A18
A18
P1.10@A20
A20
VDD@A22
A22
XC2@A23
A23
P0.31/AIN7@A8
A8
SWDCLK@AA24
AA24
DCCH@AB2
AB2
P0.16@AC11
AC11
P0.18/RESET@AC13
AC13
P0.19@AC15
AC15
P0.21@AC17
AC17
P0.23@AC19
AC19
P0.25@AC21
AC21
SWDIO@AC24
AC24
DECUSB@AC5
AC5
P0.14@AC9
AC9
P0.15@AD10
AD10
P0.17@AD12
AD12
VDD@AD14
AD14
P0.20@AD16
AD16
P0.22@AD18
AD18
VBUS@AD2
AD2
P0.24@AD20
AD20
P1.00@AD22
AD22
VDD@AD23
AD23
D-@AD4
AD4
D+@AD6
AD6
P0.13@AD8
AD8
VDD@B1
B1
P0.28/AIN4@B11
B11
P0.03/AIN1@B13
B13
P1.14@B15
B15
P1.12@B17
B17
P1.11@B19
B19
XC1@B24
B24
DCC@B3
B3
DEC4@B5
B5
VSS@B7
B7
P0.30/AIN6@B9
B9 DEC1@C1
C1
P0.00/XL1@D2
D2
DEC3@D23
D23
DEC6@E24
E24
P0.01/XL2@F2
F2
VSS_PA@F23
F23
P0.26@G1
G1
VSS_PAD
G74
P0.27@H2
H2
ANT@H23
H23
P0.04/AIN2@J1
J1
P0.10/NFC2@J24
J24
P0.05/AIN3@K2
K2
P0.06@L1
L1
P0.09/NFC1@L24
L24
P0.07@M2
M2
P0.08@N1
N1
DEC5@N24
N24
P1.08@P2
P2
P1.07@P23
P23
P1.09@R1
R1
P1.06@R24
R24
P0.11@T2
T2
P1.05@T23
T23
P0.12@U1
U1
P1.04@U24
U24
P1.03@V23
V23
VDD@W1
W1
P1.02@W24
W24
VDDH@Y2
Y2
P1.01@Y23
Y23
R8
DNP
Q1
PMOS_1.00.60.35MM
1
2
3
U2
OUT
A1
IN
A2
TS
B1
ISET
B2
PRETERM
C1
VSS
C2