13.56MHz short distance contactless memory chip with 512-bit EEPROM and anticollision functions
The SRI512/SRT512 chip is a contactless memory, powered by an externally transmitted radio wave. It contains a 512-bit user EEPROM. The memory is organized as 16 के ब्लॉक 32 बिट्स. The SRI512 is accessed via the 13.56 MHz carrier. Incoming data are demodulated and decoded from the received amplitude shift keying (पूछना) modulation signal and outgoing data are generated by load variation using bit phase shift keying (BPSK) coding of a 847KHz subcarrier. The received ASK wave is 10% modulated. The data transfer rate between the SRI512 and the reader is 106 Kbit/s in both reception and emission modes. The SRI512 chip follows the ISO 14443-2 Type B recommendation for the radio-frequency power and signal interface. The SRI512 chip is specifically designed for short range applications that need re-usable products. The SRI512 chip includes an anticollision mechanism that allows it to detect and select tags present at the same time within range of the reader. Using the STMicroelectronics single chip coupler, CRX14, it is easy to design a reader and build a contactless system.
चिप विशेषताएं
आईएसओ 14443-2 Type B air interface compliant
आईएसओ 14443-3 Type B frame format compliant
13.56 MHz carrier frequency
847 kHz subcarrier frequency
106 Kbit/second data transfer
8bit Chip_ID based anticollision system
2 Count-down binary counters with automated antitearing protection
64-bit Unique Identifier
512-bit EEPROM with write protect feature Read_block and Write_block (32 बिट्स) Internal tuning capacitor
1million erase/write cycles
40-year data retention Self-timed programming cycle
5ms typical programming time
मुख्य आवेदन ST SRI512/SRT512 chip work in a variety of ways, has a high stability and a wide range of applications, is an induction type intelligent locks, प्रवेश नियंत्रण प्रणाली, उपस्थिति प्रणाली, पहचान, संपत्ति की पहचान, प्रक्रिया नियंत्रण, पार्किंग, रसद, पशु की पहचान, औद्योगिक स्वचालन, meeting attendance, electronic label, supermarket, गोदाम प्रबंधन, कार्मिक प्रबंधन, security systems, transportation bus cards, subway cards, उपभोक्ता कार्ड, such as the first choice of RFID products.
प्रतिस्पर्धात्मक लाभ:
अनुभवी स्टाफ;
बहुत अच्छी विशेषता;
सबसे अच्छी कीमत;
तेजी से वितरण;
बड़ी क्षमता और उत्पादों की एक विस्तृत श्रृंखला;
छोटे आदेश स्वीकार करें;
ग्राहक की मांग के अनुसार ODM और OEM उत्पादों.
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