STEVAL-FKI915V1 STMicroelectronics

STEVAL-FKI915V1 Data brief Sub-1GHz (860-940 MHz) transceiver development kit based on S2-LP Features S2-LP narrow band ultra-low power Sub-1GHz transceiver in a standalone RF module tuned for 860-940 MHz frequency bands with external power amplifier STM32 Nucleo-64 development board with STM32L152RE MCU Suitable for wireless M-Bus systems Suitable for SigFox applications Associated S2-LP development kit including, documentation, firmware for STM32L and GUI Programmable RF output power up to +27 dBm Modulation schemes: 2-FSK, 2-GFSK, 4-FSK, 4-GFSK, OOK, and ASK Air data rate from 0.3 to 500 kbps Excellent performance of receiver sensitivity (up to -130 dBm) Low duty cycle RX/TX operation mode Automatic acknowledgement, retransmission and timeout protocol engine SPI interface for microcontroller USB interface RoHS compliant Description The STEVAL-FKI915V1 evaluation board is based on the S2-LP sub-1GHz ultra-low power low data-rate transceiver suitable for ISM bands and wireless M-Bus. Product summary The NUCLEO-L152RE main board with an STM32L low power MCU controls the S2- LP and integrates the ST-LINK/V2-1 debugger and programmer for firmware Sub-1GHz (860-940 STEVAL-FKI915V1 updating. MHz) transceiver development kit The STEVAL-FKI915V1 includes an external power amplifier from SkyWorks , which based on S2-LP allows the application to reach +27 dBm (500 mW) output power. STM32 Nucleo-64 NUCLEO-L152RE development board with STM32L152RE MCU, supports Arduino and ST morpho connectivity Ultra-low power, S2-LP high performance, sub-1GHz transceiver Ultra-low-power STM32L152RE ARM Cortex-M3 MCU with 512 Kbytes Flash DB3157 - Rev 3 - April 2018 www.st.com For further information contact your local STMicroelectronics sales office.P1 PA PWR P2 3V3 P3 EXT 3V3 2 Header 2 1 PWR Ext Pwr L1 3V3 i VSMPS2 AGND 4n7H C1 C2 C3 22pF 10nF 47F J1 AGND AGND (9-18V) AGND 8 SYSDCIN L23n3H VIN C4 C5 C47 C48 GND 7 GND 470nF 100pF 100pF 150nF GND 6 GND C6 5V 5 5V AGND AGND AGND AGND 100pF 3V3 4 3V3 3 STM NRST AGND L3 RESET IOREF 2 3V3 C7 C8 C19 C20 470nF 100pF 100pF 470nF 6n8H C9 C10 1 L4 33pF 1nF AGND AGND AGND AGND 15nH Header 8X1 Female AGND AGND C11 C12 C13 FLT1 470nF 100pF 470pF C32 NM J3 AGND AGND AGND 2 5 L56n8H L66n8H ANT1 1p2F 50R ANT1 C15 C16 C39 C40 C14 C17 C18 i L134n7H L145n6H L176n2H 470nF 100pF 100pF 150nF 3p3F NP AGND C21 C22 C23 U1 AGND AGND AGND AGND AGND AGND 150nF 100pF C33 C34 C35 C41 100pF AGND 47F J4 NP 3p9F 5p6F 2p7F L76n8H L86n8H AGND AGND AGND R10R ANT2 14 IC1 AGND AGND AGND AGND ANT1 ANT2 2 1 RF IC PAIN C24 C25 VSMPS2 VDDSMPS L9 L10 AGND 2 12 3p3F NP SMPS1 11 ANT2 AGND TX 0R 10uH C26 C27 3 R249R9 AGND AGND SMPS2 5 1F 150nF C28 AGND TXFLT 20 1p5F 6 C29 100pF PAOUT AGND AGND SDN L11 50R 14 RF P C30 i CSN 19 SE2435L 18nH J2 CSN C31 L12 6 R100R 18 C42 TR L183 nH L191.3 nH SCLK NM 33nH 16 D7 8 17 13 TXIN 100pF SDI RF N D6 7 16 C43 C44 C45 SDO 100pF 6 C36 1p5F D5 L15 1 9 3p3F 1p8F 8p2F 5 R150R 23 5 CSD LNAIN D4 GPIO3 XIN 18nH 3 D3 4 22 CPS AGND AGND AGND GPIO2 4 R60R D2 3 21 X1 CTX GPIO1 7 D1 2 20 4 AGND ANTSEL GPIO0 XOUT 1 D0 11 FLT2 50MHz RXFLT Header 8X1 Female NM C37 C38 2 5 3V3 12pF 12pF AGND J5 AGND L16 AGND R11 D15 10 R3NM 0R GND AGND MN D14 9 AREF 8 VDDA R40R AGND AGND GND R16 7 GND D13 6 10k R17 D12 5 R50R GPIO0 CSD R18 1k D11 4 R19 1k D10 3 R7NM GPIO1 CPS D9 2 R20 1k D8 1 R80R GPIO2 CTX GND Header 10X1 Female 1k R90R J6 A5 6 R210R A4 5 4 A3 A2 3 R120R A1 2 A0 1 R130R 3V3 3V3 3V3 Header 6X1 Female R140R IC2 R22 R23 8 C46 100k 100k VCC 100nF 7 /HOLD 6 SCLK Arduino connector C 3 SDI 5 /W D SDO 2 1 GND Q /S 4 JP1 GND R24 100k M95640-RMC6 Closed GND GND AGND GND nS STEVAL-FKI915V1 Schematic diagram 1 Schematic diagram Figure 1. STEVAL-FKI915V1 circuit schematic 1 2 7 VDDASYNTH 8 VRSYNTH 10 VDDVCOTX 15 VDDRXDIG 24 VRDIG 9 VREFVCO 12 VRRF 1 3 4 6 8 23 GND VCC0 10 NC 13 NC 24 15 VCC1 NC 17 NC 18 NC 19 21 NC VCC2 22 NC 1 3 4 6 1 2 3 DB3157 - Rev 3 page 2/4