data brief - x-nucleo-s2868a2 - sub-1 ghz 868 mhz rf
TRANSCRIPT
Features• Based on S2-LP radio• S2-LP narrow band ultra-low power sub-1 GHz transceiver tuned for 860 - 940
MHz frequency band• Programmable RF output power up to +16 dBm• Modulation schemes: 2-FSK, 2-GFSK, 4-FSK, 4-GFSK, OOK and ASK• Air data rate from 0.1 to 500 kbps• Ultra-low power consumption: 7 mA RX and 10 mA TX at +10 dBm• IEEE 802.15.4g hardware packet support with whitening, FEC, CRC and dual
SYNC word detection• RX and TX 128 byte FIFO buffers• Support to wireless M-Bus• Excellent performance of receiver sensitivity (up to -130 dBm)• Automatic acknowledgement, retransmission and timeout protocol engine• Compatible with STM32 Nucleo boards• Compatible with Arduino UNO R3 connectors• BALF-SPI2-01D3 IPD balun for matching network and harmonics filter• Sigfox compatible• Sample firmware for P2P communication• 6LoWPAN compatible thanks to STM32Cube• RoHS and WEEE compliant
DescriptionThe X-NUCLEO-S2868A2 expansion board is based on the S2-LP ultra-low powerRF transceiver and operates in the 868 MHz ISM frequency band.
The X-NUCLEO-S2868A2 interfaces with the STM32 Nucleo microcontroller via SPIconnections and GPIO pins. You can change some of the GPIOs by mounting orremoving the resistors.
The expansion board is compatible with ST morpho and Arduino UNO R3connectors.
Product summary
Sub-1 GHz RFexpansion board basedon S2-LP radio forSTM32 Nucleo
X-NUCLEO-S2868A2
Ultra-low power, highperformance, sub-1 GHztransceiver
S2-LP
50 Ω nominal input/conjugate match balun toS2-LP, 868-930 MHzwith integrated harmonicfilter
BALF-SPI2-01D3
ApplicationsISM RadioSubGHz
Sigfox
Sub-1 GHz 868 MHz RF expansion board based on S2-LP radio for STM32 Nucleo
X-NUCLEO-S2868A2
Data brief
DB4048 - Rev 1 - December 2019For further information contact your local STMicroelectronics sales office.
www.st.com
1 Schematic diagrams
Figure 1. X-NUCLEO-S2868A2 circuit schematic
LL__1100UU__00880055
RR__110000kk__004400
CS
N
1100uuFF
TX
VDDANASYNTH
SDA
SSTTSSAAFFEE--AA110000
CC__115500nn__00440022
1100RR
CC11
GPI
O1
LL1122NNMM
C2
ANT B2
22
1100ppFF
7SCL
NNMM
LL1111
1. 4 V t o 1. 8 V max
VRSYNTH
VDDSMPS
2 SDI
18
SDI 17
CC3322
nS1
RR__110000kk__00440022
1 RESET
LL33
GN
D25
OUT
RR3366
CC__115500nn__00440022
CC3344
CCRRYYSSTTAALL__NNXX11661122SSAA
CC__44..77UU__00660033
VDDVCOTX
+3V3
SDO
C1
RX_NG
PIO
0
CC__110000pp__00440022
CC22
10V
DD
VC
OTX
TX
VDD
SS22--LLPP
SDO
1
VDD
GP
IO1
21
NC 8
RX_PA1
CC__11uu__00660033
AAMM1111DDGG--SSTT0011
7
CC__110000pp__00440022
VDDSMPS
RR337700RR
110000ppFF
VSMPS2
11
VR
RF
12
CC55
CC4422
CC2222
GPI
O3
B1
RR3355
IN
LL__1122nnHH__00660033
4 GND
NC3
CC1100
CC1122
VRSYNTH
RR3388
VCC2
19G
PIO
020
D 5
NM
OUT
IN
JJ11
NNMMCC1177
SDN
GPI
O2
CC99
A2
4
CC__115500nn__00440022
22..22KK
3
CC1188
RR__110000kk__00440022
UU44
CC3366
VDDRXDIGG
PIO
2
22..22KK
CC__115500nn__00440022
RR33
CC__110000pp__00440022
RR22
CC__110000pp__00440022
CC1166
NM
nW3
110000ppFFRXN 13
RR11
UU22
22..77ppFF,,00440022
CC__1122ppFF__00660033
UU33
SMPS1
3V
DD
AN
AS
YN
TH
8
2
VCC 8
YY11
CC3300
110000nnFF
CC1133
NC 6
4 VSS
CSN
14
15
SSMMAA AANNTTEENNNNAA
MM9955664400
7
CC2255
+3V3
+3V3
CC44 CC88
44..77nnHH
RXP
SDN6
CC__115500nn__00440022
SCLK
VSMPS2
nS
VR
SY
NTH
9
VDD
1
LL88
CC__110000nn__00440022
CC__447700pp__00440022
SCL
SCLK
+3V3
VDDRXDIG
SDO
Q2
+3V3
22..22KK
nHOLD
C 6
CC4411
VDDRXDIG
SDA
VDD
VCO
TX
CC__115500nn__00440022
GND1
XOUT
5 XIN
NNMMLL1133
CC3355
VR
EFV
CO
EE11LL77
CC__115500nn__00440022
RR2244
LL__3399nnHH__00440022
SDI
CC66
5
16
SCLK
UU11
VDDANASYNTH
VDD
VDDSMPS
SMPS2
4
LL22
GND2
GP
IO3
23
VR
DIG
24
CC1144
BBAALLFF--SSPPII22--0011DD33
Figure 2. X-NUCLEO-S2868A2 circuit schematic - Arduino connectors
RR1100
RR1111
SDA
43V3
GPIO3
SDN
+5V
D8
and Female on
CCNN55
RR1166
A0 1
D45
10
D67
1
GPIO0
SCL
5V 5
00
RR1155
nS
00
1
SCL
TXD/D1
PWM/D93
1
JJPP11
PA3RR2233
NNMM
6GND
A3 4
CSN
Top
8 Pass-Through:Male on Bottom
00
AREF9 SDA
RR1133
PWM/D104
RXD/D02
00
PA2
RR55
D78
PC7
nS
RR66
RR1122
A4 5
RR44SDI
8+3V3
LLEEDD
SCLK
RR1188 NNMM
SDO
GPIO0
PC7
RESET
NNMM
CCNN88
6 Pass-Through:Male on Bottom
Topand Female on
Pass-Through:Male on Bottom
Topand Female on
Pass-Through:Male on Bottom
Topand Female on
NC 1
A5 6
CCNN66
7GND
D34
VIN 8 NNMMRR1177
D56
MISO/D126
CSN00
IOREF
RR99
RR2222
VDD
MOSI/PWM/D115
NNMM2
00
RESET2
GPIO1RR114400
SCK/D137 GND
NNMMRR1199
00
SDN
A2 3
RR77
CCNN99
SCLK
VIN
JJUUMMPPEERR
D23
32
333300DD11
GPIO2
AVDDIOREF
00A1 2
00
Arduino UNO R3 SX connector Arduino UNO R3 DX connector
X-NUCLEO-S2868A2Schematic diagrams
DB4048 - Rev 1 page 2/5
Figure 3. X-NUCLEO-S2868A2 circuit schematic - ST morpho connectors
1315
RESET+3V3
2527
ST morpho DX connector
Pass-Through: Female onBottom and Male on Top
Pass-Through: Female onBottom and Male on Top
PC9
BOOT0
22
PD81113
3638
IOREF
1719
PA13 PA6PA7
AGND
PC10
PA15
31
2426
PC2PC3 37
11
246810
21
E5V
PA14
PB0PC1
2628
PB15
PC12
PB10
2 302729 PB13
1214
CN7
PC0
PC5
PC15
PA3
PB14
PA8
33 PA10PH1/PF1/PD1
PA12
35
13579
34
NC/PF7
32
PC11PD2
13579
PH0/PF0/PD0
PA2
PA4
PA9
246810
PC14
16PA11
3032
3534
PB4
PB1
9
18PC7
1214
PC6
PB12
23
PA5
333638
28
19
PB5
17
1
20
PB8
PC13
U5V
VIN
PB616
PC4
NC/PF6
PB2
NC/PF4
25
18
PB9AVDD
3
37
CN10
2123
2224
PB3
PB7
15
PA0PA1
+5V
NC/PF5
PC8
VLCD/VBAT
PB11/NC
VDD
20
ST morpho SX connector
X-NUCLEO-S2868A2Schematic diagrams
DB4048 - Rev 1 page 3/5
Revision history
Table 1. Document revision history
Date Version Changes
12-Dec-2019 1 Initial release.
X-NUCLEO-S2868A2
DB4048 - Rev 1 page 4/5
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X-NUCLEO-S2868A2
DB4048 - Rev 1 page 5/5