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Full machine-readable index: https://core-electronics.com.au/llms.txt # MikroElektronika RFID Click **Type:** Product page · **SKU:** CE05416 · **Brand:** [MikroElektronika](https://core-electronics.com.au/brands/mikroelektronika-australia) **Page:** https://core-electronics.com.au/mikroelektronika-rfid-click.html ([markdown](https://core-electronics.com.au/mikroelektronika-rfid-click.html.md)) ## Retired product This product is retired and no longer available for purchase. Search the catalogue for an alternative. ## How to buy - **Search the catalogue:** `https://core-electronics.com.au/search/{query}.md` (URL-encode the query; pages 2-3 at `search/{query}/{page}.md`; `search.md?q=` also works) - **Payment methods, purchase orders, policies and contact details:** https://core-electronics.com.au/llms.txt ## Description RFid click features CR95HF 13.56 MHz contactless transceiver as well as trace antenna. The click is designed to run on a 3.3V power supply only. It communicates with the target MCU via mikroBUS™ UART (TX, RX), SPI (MISO, MOSI, SCK, CS) INT, RST, PWM and AN lines. The click functions as an integrated transceiver for contactless applications. The board contains a dedicated internal frame controller and analog front end (AFE) for RF communications. It supports ISO/IEC 14443 type A and B, ISO/IEC 15693 and ISO/IEC 18092 protocols (tags) as well as the detection, reading and writing of NFC forum type 1, 2, 3 and 4 tags. ### CR95HF integrated transceiver The CR95HF has 2 operating modes: Wait for Event (WFE) and Active. In Active mode, the CR95HF communicates actively with a tag or an external host. WFE mode includes four low consumption states: Power-up, Hibernate, Sleep and Tag Detector. The transceiver can switch from one mode to another. The Hibernate state has the lowest power consumption out of the four states (1 µA typ. 5 µA max.). ### SMD jumpers Two SMD jumpers are provided on the board. In case you want to use UART interface, it is necessary to solder SMD jumpers in B position. Otherwise, if you want to use SPI interface, jumpers should be left in its default position (A). In that case interrupt pins (IN and OUT) are usable. ### Specifications - Type: NFC,RFID - Applications: Board can be used with 13.56 MHz RFid tags or identification cards. Ideal for tracking and security systems that needs RFID support - On-board modules: CR95HF 13.56 MHz contactless transceiver and trace antenna - Key Features: Dedicated internal frame controller and analog front end (AFE) for RF comm. available on-board. It can detect, read and write NFC forum type 1, 2, 3 and 4 tags - Key Benefits: Supports ISO/IEC 14443 type A and B, ISO/IEC 15693 and ISO/IEC 18092 protocols (tags) - Interface: GPIO,SPI,UART - Input Voltage: 3.3V - Compatibility: mikroBUS - Click board size: L (57.15 x 25.4 mm) ### Key features - CR95HF IC - Operating modes supported: Reader/Writer - RF communication @13.56 MHz - Supports NFC Forum Type 1, 2, 3 and 4 tags - 3.3V power supply - Interface: UART, SPI ### Pinout Diagram This table shows hwo the pinout on RFID Click corresponds to the pinout on the mikroBUS™ Socket (the latter shwon i nthe middle columns). INSERT IMAGE HERE ### Programming The following code snippet uses a TFT to communicate with the user when the click is ready for reading and afterwards tells the user what the Tag ID is. 1 void main() { 2 Init(); // Initialize MCU and peripherals 3 DrawFrame(); 4 while (!EchoResponse()) { // Until CR95HF is detected 5 IRQ\_IN = 1; // put IRQ\_IN pin at low level 6 delay\_ms(1); 7 IRQ\_IN = 0; // put IRQ\_IN pin at low level 8 delay\_ms(1); 9 } 10 TFT\_Write\_Text("CR95HF Device Connected.", 55, 60); 11 12 ReadCR95HF\_ID(); 13 Calibration(); 14 IndexMod\_Gain(); 15 AutoFDet(); 16 Select\_ISO\_IEC\_18092\_Protocol(); 17 18 while (1) { 19 if (!TAG\_Flag) 20 GetNFCTag(); // Get NFC ID 21 22 if (!NFC\_Flag) 23 GetTagID(); // Get Tag ID 24 25 if (ID\[0\] == 0) { // If there is no tag present 26 flag++; // Increment counter flag 27 } 28 else { // If tag is present 29 flag = 0; // Reset counter flag 30 if (strcmp(ID\_old, ID)) { // Compare previous and current tag ID 31 TFT\_Set\_Font(TFT\_defaultFont, CL\_WHITE, FO\_HORIZONTAL); // Set font color to white 32 TFT\_Write\_Text(ID\_old, x\_pos\_old, 180); // Delete previous tag ID 33 TFT\_Set\_Font(TFT\_defaultFont, CL\_RED, FO\_HORIZONTAL); // Set font color to red 34 TFT\_Write\_Text("Tag ID :", 130, 160); 35 TFT\_Write\_Text(ID, x\_pos, 180); // Display current tag ID 36 TFT\_Set\_Font(TFT\_defaultFont, CL\_WHITE, FO\_HORIZONTAL); // Set font color to white 37 TFT\_Write\_Text("Put the RFid Tag over the RFid Click Antenna", 25, 140); 38 strcpy(ID\_old, ID); // Set current ID as previous ID 39 Delay\_ms(2000); 40 x\_pos\_old = x\_pos; 41 } 42 } 43 if (flag > 5) { // If counter flag has reached value > 5 44 TFT\_Set\_Font(TFT\_defaultFont, CL\_BLACK, FO\_HORIZONTAL); // Set font color to black 45 TFT\_Write\_Text("Put the RFid Tag over the RFid Click Antenna", 25, 140); 46 TFT\_Set\_Font(TFT\_defaultFont, CL\_WHITE, FO\_HORIZONTAL); // Set font color to white 47 TFT\_Write\_Text("Tag ID :", 130, 160); 48 TFT\_Write\_Text(ID\_old, x\_pos\_old, 180); // Delete previous tag ID 49 ID\_old\[0\] = 0; // Terminate the old ID string 50 flag = 0; // Reset counter flag 51 } 52 ID\[0\] = 0; // Terminate the ID string 53 54 // Clear read and write buffers 55 for (j = 0; j < 18; j++) { 56 rdata\[j\] = 0; 57 sdata\[j\] = 0; 58 } 59 } 60 } ### Downloads - [RFID Click Schematic](https://download.mikroe.com/documents/add-on-boards/click/rfid/rfid-click-schematic-v103.pdf) ## Images - [Product image 1](https://core-electronics.com.au/media/catalog/product/c/e/ce05416-1.png)