this is information on a product in full production. for further information contact your local stmicroelectronics sales office. march 2012 doc id 022387 rev 2 1/5 5 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 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 to control the 13.56 mhz cr95hf multi-protocol transceiver ic from the host. 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. figure 1. functional block diagram - 3 6 ! n t e n n a t u n i n g c i r c u i t 3 0 ) 5 ! 2 4 b u s # 2 ( & www.st.com
hardware configuration PLUG-CR95HF-B 2/5 doc id 022387 rev 2 1 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 ta b l e 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 figure 3. PLUG-CR95HF-B connector table 1. solder bridge configuration solder bridge communication mode between cr95hf and host uart spi ssi1_0 gnd vps - 3 6 3 3 ? s o l d e r b r i d g e - 3 6
PLUG-CR95HF-B hardware configuration doc id 022387 rev 2 3/5 refer to the cr95hf datasheet for a description of the signals. table 2. description of connector signals pin number signal description 1 uart_tx and irqout uart transmit pin/interrupt output for cr95hf 2 uart_rx and irqin uart receive pin/interrupt input for cr95hf 3 spi_ss (nss) spi slave select 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 main power supply/power supply for rf drivers 8 gnd ground
revision history PLUG-CR95HF-B 4/5 doc id 022387 rev 2 2 revision history table 3. document revision history date revision changes 13-feb-2012 1 initial release. 15-mar-2012 2 swapped s i gnal and description for pin 1 and 2 in ta b l e 2 : description of connector signals .
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