PLUG-CR95HF-B Daughter board for the CR95HF 13.56 MHz transceiver IC Data brief − production data Features ■ Ready-to-use printed circuit board including – CR95HF multi-protocol transceiver IC – 47 x 34 mm 13.56 MHz inductive etched antenna and tuning components – SPI or UART connector for communication with the host to control the 13.56 MHz CR95HF multi-protocol transceiver IC from the host. Description The PLUG-CR95HF-B includes a CR95HF contactless transceiver, a 47 x 34 mm 13.56 MHz inductive etched antenna and its associated tuning components. The user must connect a host to the board through the UART or the SPI connector. It allows Figure 1. The CR95HF acts as a slave. The host can configure the transceiver and send SPI or UART commands. The PLUG-CR95HF-B board is powered through the VPS pin. Functional block diagram 30)5!24BUS #2(& !NTENNATUNING CIRCUIT -36 March 2012 Doc ID 022387 Rev 2 This is information on a product in full production. For further information contact your local STMicroelectronics sales office. 1/5 www.st.com 5 Hardware configuration 1 PLUG-CR95HF-B Hardware configuration The PLUG-CR95HF-B daughter board can use either the UART or the SPI as external serial interface. SS1_0 solder bridge allows to configure the CR95HF to use either the UART or the SPI serial interface (see Figure 2, and Table 1). Once the solder bridges are configured, the communication mode is automatically enabled by the CR95HF at power-on. Figure 2. Top view of the PLUG-CR95HF-B 33?SOLDERBRIDGE -36 Table 1. Solder bridge configuration Communication mode between CR95HF and host Solder bridge SSI1_0 Figure 3. UART SPI GND VPS PLUG-CR95HF-B connector -36 2/5 Doc ID 022387 Rev 2 PLUG-CR95HF-B Hardware configuration Table 2. Description of connector signals Pin number 1 Signal Description UART_TX and IRQOUT UART transmit pin/interrupt output for CR95HF UART receive pin/interrupt input for CR95HF 2 UART_RX and IRQIN 3 SPI_SS(NSS) 4 SPI_MISO SPI data, slave output 5 SPI_MOSI SPI data, slave input 6 SPI_SCK SPI serial clock 7 VPS and VPS_TX 8 GND SPI slave select Main power supply/power supply for RF drivers Ground Refer to the CR95HF datasheet for a description of the signals. Doc ID 022387 Rev 2 3/5 Revision history 2 PLUG-CR95HF-B Revision history Table 3. 4/5 Document revision history Date Revision Changes 13-Feb-2012 1 Initial release. 15-Mar-2012 2 Swapped signal and description for pin 1 and 2 in Table 2: Description of connector signals. Doc ID 022387 Rev 2 PLUG-CR95HF-B Please Read Carefully: Information in this document is provided solely in connection with ST products. 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