DEMOKITCRX14 STMicroelectronics, DEMOKITCRX14 Datasheet
DEMOKITCRX14
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DEMOKITCRX14 Summary of contents
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Low Cost ISO14443 type-B Contactless Coupler Chip with Anti-Collision, CRC Management and Anti-Clone Function FEATURES SUMMARY Single 5V ±500mV Supply Voltage SO16N package Contactless Communication – ISO14443 type-B protocol – 13.56MHz Carrier Frequency using an External Oscillator – 106 Kbit/s ...
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CRX14 TABLE OF CONTENTS FEATURES SUMMARY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
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Figure 10.CRX14 I²C Read Modes Sequences . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
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CRX14 Figure 31.Standard TAG Command: Complete TAG Access Description . . . . . . . . . . . . . . . . . . . 27 Anti-Collision TAG Sequence ...
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... Radio-Frequency power and signal interfacing. With it, any ISO14443 type- B PICC products can be powered and have their data transmission controlled via a simple antenna. The CRX14 is fabricated in STMicroelectronics High Endurance Single Poly-silicon CMOS tech- nology. The CRX14 is organized as 4 different blocks (see Figure 3 ...
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CRX14 Figure 3. Logic Block Diagram REF CRX14 OSC1 SCL SDA GND GND_RF 6/40 Figure 4. SO Pin Connections RF OUT OSC2 Antenna GND_RF RF IN AI10910 SO16 1 V REF ...
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SIGNAL DESCRIPTION See Figure 2., and Table 1., for an overview of the signals connected to this device. Oscillator (OSC1, OSC2). The OSC1 and OSC2 pins are internally connected to the on-chip oscil- lator circuit. The OSC1 pin is the ...
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CRX14 Figure 5. CRX14 Application Schematic V CC OPT OPT R1 OPT C3 WURTH 742-792-042 U1 FL7 22nF50V GND_RF ...
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CRX14 REGISTERS The CRX14 chip coupler contains six volatile reg- isters entirely controlled, at both digital and analog level, using the four registers listed below and shown in Table 2.: Parameter Register Input/Output Frame Register Authentication Register Slot ...
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... A complete description of the Authentication sys- tem is available under Non Disclosure Agreement (NDA) with STMicroelectronics. For more details about this CRX14 function, please contact the nearest STMicroelectronics sales office. Slot Marker Register (03h) The slot Marker Register is located at the I²C ad- dress 03h ...
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If a CRC error is detected, the Status Slot Bit is set to ‘0’, and the corresponding Slot_Register is set to FFh. Each time the Slot Marker Register is accessed in I²C Write mode, Byte 0 of the Input/Output Frame ...
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CRX14 CRX14 I²C PROTOCOL DESCRIPTION The CRX14 is compatible with the I²C serial bus memory standard, which is a two-wire serial inter- face that uses a bi-directional data bus and serial clock. The CRX14 has a pre-programmed, 4-bit identifi- cation ...
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Figure 7. I²C Bus Protocol SCL SDA START CONDITION 1 SCL MSB SDA START CONDITION 1 SCL MSB SDA I²C Memory Addressing To start up communication with the CRX14, the bus master must initiate a START condition. Then, the bus ...
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CRX14 The STOP condition at the end of a Write access to the Input/Output Frame, Authenticate or Anti- Collision Register, causes the Radio Frequency data exchange between the CRX14 and the PICC to be started. During the Radio Frequency data ...
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Figure 9. I²C Polling Flowchart using ACK First byte of instruction with R already decoded by the CRX14 ReSTART STOP Radio Frequency data exchange in progress START Condition DEVICE SELECT CODE with R/W=1 ACK NO returned YES Next ...
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CRX14 CRX14 I²C Read Operations To send a Read command, the bus master sends a START condition, followed by a Device Select Code and the R/W bit set to ’1’. The CRX14 that corresponds to the Device Select Code acknowledges ...
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APPLYING THE I²C PROTOCOL TO THE CRX14 REGISTERS I²C Parameter Register Protocol Figure 11. shows how new data is written to the Parameter Register. The new value becomes ac- tive after the I²C STOP condition. Figure 12. shows how to ...
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CRX14 I²C Input/Output Frame Register Protocol Figure 14. shows how to store a PICC request frame command of N Bytes into the Input/Output Frame Register. After the I²C STOP condition, the request frame is RF transmitted in the ISO14443 type-B ...
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I²C Authenticate Register Protocol For information please contact your nearest STMi- croelectronics sales office. I²C Slot Marker Register Protocol An I²C Write command to the Slot Marker Register generates an automated sixteen-command loop (See Figure 17. for a description of ...
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CRX14 Addresses above Location 06h In I²C Write mode, when the CRX14 receives the 8-bit register address, and the address is above lo- cation 06h, the device does not acknowledge (NoACK) and deselects itself from the bus. The Serial Data ...
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CRX14 ISO14443 TYPE-B RADIO FREQUENCY DATA TRANSFER Output RF Data Transfer from the CRX14 to the PICC (Request Frame) The CRX14 output buffer is controlled by the 13.56MHz clock signal generated by the external oscillator and by the request frame ...
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CRX14 Table 7. CRX14 Request Frame Character Format Bit b Start bit used to synchronize the transmission Information Byte (instruction, address or data Stop bit used to indicate the end of the character ...
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Input RF Data Transfer from the PICC to the CRX14 (Answer Frame) The CRX14 uses the ISO14443 type-B retro-mod- ulation scheme which is demodulated and decod the RF circuitry. IN The modulation is obtained by modifying the PICC ...
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CRX14 Answer Start Of Frame The PICC SOF must be compliant with the ISO14443 type-B, and is shown in – Ten or eleven Elementary Time Units (ETU) each containing a logical ‘0’, – Two ETUs containing a logical ‘1’. Figure ...
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Transmission Frame The Request Frame transmission must be fol- lowed by a minimum delay which no ASK or BPSK modulation occurs, before the Answer Frame can be transmitted. t minimum time required by the CRX14 to switch from ...
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CRX14 TAG ACCESS USING THE CRX14 COUPLER In all the following I²C commands, the last three bits of the Device Select Code can be replaced by any of the three-bit binary values (000, 001, 010, 011, 100, 101, 110, 111). ...
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Figure 31. Standard TAG Command: Complete TAG Access Description Device I/O Request Request Select I²C Register Frame Frame Code Address Length Bytes Write START RF Anti-Collision TAG Sequence The CRX14 can identify an ST short range memo- ry using a ...
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CRX14 Figure 32. Anti-Collision ST short range memory Sequence (1) S Slot S T Device Marker CRX14 A T Select SOF Register O R Code Address P T I²C 03h RF Slot 0 SOF CRX14 SOF I²C RF... Slot 1 ...
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Figure 33. Anti-Collision ST short range memory Sequence Continued I²C RF ... Slot 10 SOF I²C RF ... Slot 11 SOF I²C RF ... Slot 12 SOF I²C RF ... Slot 13 SOF I²C RF ... Slot 14 SOF I²C ...
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... No longer than 40 seconds. 3. MIL-STD-883C, 3015.7 (100pF, 1500 ). 4. EIAJ IC-121 (Condition C) (200pF 30/40 these or any other conditions above those indicat the Operating sections of this specification is not implied. Refer also to the STMicroelectronics SURE Program and other relevant quality docu- ments. Parameter (1) ) OUT ...
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DC AND AC PARAMETERS This section summarizes the operating and mea- surement conditions, and the DC and AC charac- teristics of the device. The parameters in the DC and AC Characteristic tables that follow are de- rived from tests performed ...
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CRX14 Table 11. I²C DC Characteristics Symbol Parameter Input Leakage Current (SCL SDA, E0, E1, E2) Output Leakage Current (SCL SDA, E0, E1, E2) I Supply Current CC I Supply Current (Stand-by) CC1 Input Low Voltage ...
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Table 12. I²C AC Characteristics Symbol Alt Clock Rise Time t R CH1CH2 2 t Clock Fall Time t F CL1CL2 2 t SDA Rise Time t R DH1DH2 2 t SDA Fall Time t F DL1DL2 1 ...
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CRX14 Figure 36. CRX14 Synchronous Timing RF OUT ASK Modulated Signal V RFOUT A t POR FRAME transmission between the reader and the contactless device DATA 1 FRAME transmitted by the PICC in BPSK ...
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Table 13 Characteristics OUT Symbol Parameter f External Oscillator Frequency CC MI Carrier Modulation Index CARRIER 10% Rise and Fall time RFR RFF t Pulse Width on RF RFSBL t ASK modulation bit jitter JIT ...
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CRX14 PACKAGE MECHANICAL Figure 37. SO16 Narrow - 16 lead Plastic Small Outline, 150 mils body width, Package Outline SO-b Note: Drawing is not to scale. Table 15. SO16 Narrow - 16 lead Plastic Small ...
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PART NUMBERING Table 16. Ordering Information Scheme Example: Device Type CRX14 Package MQ = SO16 Narrow (150 mils width) MQP = SO16 Narrow (150 mils width) Lead-Free and RoHS compliant Customer Code XXX = Given by the issuer For a ...
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CRX14 APPENDIX A. ISO14443 TYPE B CRC CALCULATION #include <stdio.h> #include <stdlib.h> #include <string.h> #include <ctype.h> #define BYTE unsigned char #define USHORT unsigned short unsigned short UpdateCrc(BYTE ch, USHORT *lpwCrc (ch^(BYTE)((*lpwCrc) & 0x00FF)); ch = (ch^(ch<<4)); *lpwCrc ...
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REVISION HISTORY Table 17. Document Revision History Date Version 4-Aug-2004 1.0 23-Feb-2005 2.0 21-Jul-2005 3.0 Revision Details First issue Document put into new template. Added Package information in Table 16., Ordering Information CRX14 Scheme. 39/40 ...
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... No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics ...