CR14 13.56 MHz single-protocol contactless transceiver IC with I²C serial access

The CR14 is a contactless coupler that is compliant with the short range ISO14443 type-B standard. It is controlled using the two wire I²C bus.

The CR14 generates a 13.56 MHz signal on an external antenna. Transmitted data are modulated using Amplitude Shift Keying (ASK). Received data are demodulated from the PICC (Proximity integrated Coupling Card) load variation signal, induced on the antenna, using Bit Phase Shift Keying (BPSK) of a 847kHz sub-carrier. The Transmitted ASK wave is 10% modulated. The Data transfer rate between the CR14 and the PICC is 106 Kbit/s in both transmission and reception modes.

The CR14 follows the ISO14443 type-B recommendation for Radio frequency power and signal interface.

The CR14 is specifically designed for short range applications that need disposable and reusable products.

The CR14 includes an automated anti-collision mechanism that allows it to detect and select any ST short range memories that are present at the same time within its range. The anti-collision mechanism is based on the STMicroelectronics probabilistic scanning method.

The CR14 provides a complete analog interface, compliant with the ISO14443 type-B recommendations for 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

技术特性

Single 5 V ±500 mV supply voltage
SO16N package
Contactless communication
- ISO14443 type-B protocol
- 13.56MHz carrier frequency using an external oscillator
- 106 Kbit/s data rate
- 36-byte input/output frame register
- Supports frame answer with/without SOF/EOF
- CRC generation and check
- Automated ST anti-collision exchange
I²C communication
- Two-wire I²C serial interface
- Supports 400 kHz protocol
- 3 chip enable pins
- Up to 8 CR14 connected on the same bus

功能框图

CR14 订购信息

订购型号	产品状态	美金价格	数量	封装	包装形式	温度范围	材料声明
CR14-MQP/1GE	Active		1000	SO-16	Tube		CR14-MQP/1GE

DATASHEET

描述	版本	大小
CR14 : ISO14443 type-B contactless coupler chip with anti-collision and CRC management	2	402KB

USER MANUALS

描述	版本	大小
UM0672: CRX14 and CR14 reference design PCB Gerber files	1	333KB

FLYERS

描述	版本	大小
FLRFIDRF1009: RFID and RF memory products - Based on ISO 14443 and ISO 15693	1.1	226KB