STEVAL-IKR002V4D SPIRIT1 868 MHz low data rate tansceiver daughterboard Data brief Description The STEVAL-IKR002V4D product evaluation board is based on the SPIRIT1, a very low-power RF transceiver intended for RF wireless applications in the sub 1 GHz frequency band. Features • SPIRIT1 low power sub GHz transceiver in a standalone RF module tuned for 868 MHz • Modulation schemes: 2-FSK, GFSK, MSK, GMSK, OOK, and ASK • Suitable for wireless M-BUS applications • Programmable air data rate: from 1 to 500 kbps • Very low power consumption: 9.7 mA RX and 21 mA TX at +11 dBm • Excellent receiver sensitivity (down to -119 dBm) • Low duty cycle RX/TX operation mode • Automatic acknowledgment, retransmission, and timeout protocol engine • AES 128-bit encryption co-processor • SPI interface for microcontroller • RoHS compliant July 2014 DocID025785 Rev 1 For further information contact your local STMicroelectronics sales office. 1/4 www.st.com DocID025785 Rev 1 2 4 6 8 10 R _0R 0_0402 R8 R _0R 0_0402 R7 B2=433MHz B1=315MHz B0=169MHz 1 R _0R 0_0402 R 11 R _0R 0_0402 R 10 R _0R 0_0402 R9 XTAL B3=920MHz B3=915MHz B3=868MHz Mount resistor relative to used band C_12P_0402_C0G_J_50 C9 Y1 SDn 11 12 13 14 15 C_TBD_0402_C0G C 19 L7 L_10U _0805 C_10P_0402_C0G_J_50 C 10 REXT TX SMPS2 SMPS1 SPIRIT1_2 CSn SCLK SDI SDO GPIO_0 NX3225GA-xxMHz (XTAL) 5 4 3 2 U1 C 21 C _100p_0402_C 0G C_100n_0402_X7R C0 20 GPIO_1 XOUT 1 3 5 7 9 R _0R 0_0402 R6 SDO SDI SCLK CSn J7 HEADER 5X2 GPIO0 GPIO3 GPIO2 GPIO1 C _330p_0402_C 0G C 22 7 SPIRIT_DUMMY1 19 GPIO_2 XIN DUMMY3 SDn C 20 C_1U_0603_X7R_K_6V3 8 J6 HEADER 5X2 VCC_RF 18 VBAT2 SPIRIT_DUMMY2 17 VREG GPIO_3 RXP 9 6 2 4 6 8 10 1 3 5 7 9 16 VBAT1 RXN 10 2/4 GND L8 L1 L_TBD_0402 C4 C_TBD_0402_C0G C_TBD_0402_C0G L_TBD_0402 L4 C_TBD_0402_C0G C5 C_TBD_0402_C0G L_TBD_0402 L_TBD_0402 L6 C6 L5 C1 L_TBD_0402 L2 C 14 C7 C_TBD_0402_C0G C_TBD_0402_C0G C2 L3 L_TBD_0402 C_TBD_0402_C0G C8 C 13 C_TBD_0402_X7R C_TBD_0402_C0G C3 C_TBD_0402_C0G C 12 C_100n_0402_X7R L_TBD_0402 L9 C 11 C_1U_0603_X7R_K_6V3 R 13 R_TBD_0402 R 12 R_TBD_0402 L0 L_TBD_0402_50M C_TBD_0402_C0G C 15 L_TBD_0402 DUMMY3 3V3 J1 RF_IN/OUT 1 21 3V3 Schematic diagram STEVAL-IKR002V4D Schematic diagram Figure 1. STEVAL-IKR002V4D circuit schematic AM17485v1 STEVAL-IKR002V4D 2 Revision history Revision history Table 1. Document revision history Date Revision 04-Jul-2014 1 Changes Initial release. DocID025785 Rev 1 3/4 4 STEVAL-IKR002V4D Please Read Carefully: Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. Purchasers are solely responsible for the choice, selection and use of the ST products and services described herein, and ST assumes no liability whatsoever relating to the choice, selection or use of the ST products and services described herein. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted under this document. 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