X-NUCLEO-S2868A1 STMicroelectronics

X-NUCLEO-S2868A1 Data brief Sub-1 GHz 868 MHz RF expansion board based on S2-LP radio for STM32 Nucleo 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 Support to SMD and SMA antennas BALF-SPI2-01D3 IPD balun for matching network and harmonics filter Sigfox compatible Sample firmware for P2P communication 6LoWPAN compatible thanks to STM32Cube RoHS compliant Product summary Sub-1 GHz RF expansion board Description based on S2-LP X-NUCLEO-S2868A1 The X-NUCLEO-S2868A1 expansion board is based on the S2-LP radio and radio for STM32 Nucleo operates in the 868 MHz ISM frequency band. Ultra-low power, The expansion board is compatible with ST morpho and Arduino UNO R3 high connectors. performance, S2-LP The X-NUCLEO-S2868A1 interfaces with the STM32 Nucleo microcontroller via SPI sub-1 GHz connections and GPIO pins. You can change some of the GPIOs by mounting or transceiver removing the resistors. 50 nominal input/conjugate match balun to S2-LP, 868-930 BALF-SPI2-01D3 MHz with integrated harmonic s filter DB3602 - Rev 1 - May 2018 www.st.com For further information contact your local STMicroelectronics sales office.X-NUCLEO-S2868A1 X-NUCLEO-S2868A1 schematic diagram 1 X-NUCLEO-S2868A1 schematic diagram Figure 1. X-NUCLEO-S2868A1 circuit schematic VDD VDD VDD VDD VDDSMPS VDDVCOTX VDDANASYNTH VDDRXDIG +3V3 CC22 CC44 CC66 CC88 CC11 CC55 CC 44..77UU 00660033 CC 115500nn 00440022 CC 110000pp 00440022 CC 115500nn 00440022 CC 110000pp 00440022 CC 110000pp 00440022 VRSYNTH RR22 RR11 RR 110000kk 004400 CC3300 CC 115500nn 00440022 RR 110000kk 00440022 UU11 nS 1 8 nS VCC SDO 2 7 Q nHOLD SCLK CC1100 3 6 nW C CC99 SDI CC 115500nn 00440022 4 5 CC 110000nn 00440022 VSS D RR33 MM9955664400 UU22 RR 110000kk 00440022 CC3322 CC1122 CC 115500nn 00440022 CC 11uu 00660033 VDDSMPS 1 18 SCLK RR3333 LL22 VDDSMPS SCLK 1. 4 V t o 1. 8 V max VSMPS2 2 17 SDI SMPS1 SDI 00RR LL 1100UU 00880055 3 16 SDO SMPS2 SDO OUT 4 15 RR3377 VDDRXDIG UU33 XOUT VDDRXDIG 00RR IN 5 14 A1 A2 CC1166 XIN RXP RX PGND1 SDN 6 13 B1 B2 110000ppFF SDN RXN RX N ANT C1 C2 JJ11 TX GND2 CC1177 SSMMAA AANNTTEENNNNAA NNMM LL1111 SS22--LLPP BBAALLFF--SSPPII22--0011DD33 NNMM VDDANASYNTH LL1122 VRSYNTH RR2244 NNMM YY11 1100RR OUT CC2222 3 2 CC2255 CC 115500nn 00440022 CC1144 IN CC 447700pp 00440022 LL1133 1 CC 1122ppFF 00660033 4 NNMM CC3366 110000ppFF LL77 CCRRYYSSTTAALL NNXX11661122SSAA CC1133 VSMPS2 EE11 LL 1122nnHH 00660033 1100ppFF CC3344 CC3355 CC 115500nn 00440022 CC 110000pp 00440022 AAMM1111DDGG--SSTT0011 NNMM LL88 44..77nnHH UU44 RR3388 22..22KK 1 8 +3V3 RESET NC 2 7 SCL +3V3 VCC SCL 3 6 NC NC CC4422 CC4411 4 5 SDA RR3366 GND SDA 1100uuFF 110000nnFF 22..22KK RR3355 SSTTSSAAFEFE--AA110000 22..22KK +3V3 NNMM +3V3 Figure 2. X-NUCLEO-S2868A1 circuit schematic - Arduino connectors ARDUINO UNO R3 DX connector ARDUINO UNO R3 SX connector CN5 CN6 SCL SCL 10 SDA SDA NC 1 9 IOREF +3V3 VDD AVDD IOREF 2 8 AREF RESET JP1 GND RESET 3 7 SCLK R6 NM SCK/D13 3V3 4 1 2 6 +5V SDO R4 0 MISO/D12 5V 5 5 MOSI/PWM/D11 JUMPER SDI R5 0 GND 6 4 CSN R9 NM PWM/D10 GND 7 3 VIN PC7 NM PWM/D9 VIN 8 R17 2 D8 nS R7 NM 1 8 pass-through: Pass-through: male on bottom male on bottom and female on top and female on top CN9 CN8 SDN R10 0 8 D7 R12 0 GPIO0 SDN NM D6 A0 1 R19 7 R13 0 CSN nS R22 0 A1 2 6 D5 A2 3 R14 0 GPIO1 5 D4 R15 0 GPIO2 SCLK R11 0 D3 A3 4 4 R18 NM GPIO0 A4 5 3 D2 A5 6 R16 0 GPIO3 D11 PA2 2 TXD/D1 PC7 R23 330 PA3 RXD/D0 1 6 pass-through: LED Pass-through: male on bottom and female on top male on bottom and female on top DB3602 - Rev 1 page 2/5 7 24 VDDANASYNTH VRDIG 8 23 GPIO3 VRSYNTH GPIO3 9 22 GPIO2 VREFVCO GPIO2 VDDVCOTX GPIO1 10 21 VDDVCOTX GPIO1 GPIO0 11 20 TX GPIO0 CSN 12 19 VRRF CSN 25 GND