CR14 is a contactless coupler chip from ST. It supports ISO14443 type B protocol, works at 13.56MHz frequency, data rate is 106Kbit/s, supports 36-byte input/output frame register, supports frame answer with/without SOF/EOF, supports CRC generation and check, and supports automatic ST anti-collision exchange.
The CR14 is a contactless coupler chip designed for short-range applications requiring disposable and reusable products. It complies with the ISO14443 Type-B standard and is controlled via a two-wire I2C bus. The chip generates a 13.56 MHz signal on an external antenna using Amplitude Shift Keying (ASK) for transmission and demodulates received data using Bit Phase Shift Keying (BPSK) on an 847 kHz sub-carrier.
| Supply voltage | Single 5 V +500 mV |
|---|---|
| Carrier frequency | 13.56 MHz |
| Data rate | 106 Kbit/s |
| Frame register size | 36 bytes |
| I2C protocol support | 400 kHz |
| Chip enable pins | 3 |
| Maximum chips per bus | 8 |
| Package width | 150 mils |
Transmitted data are modulated using Amplitude Shift Keying (ASK).
The device operates with a single 5 V +500 mV supply voltage.
The data transfer rate is 106 Kbit/s in both transmission and reception modes.
The SO16 package has a 150 mils width.