RC-S885 Communication distance (*1) 20mm(when using RC- S600) Communication method Compliant with ISO/IEC (212kbps,424kbps Passive mode) Operating frequency13.56MHz Modulation systemASK modulation Communication speed Supports automatic 212kbps,424kbps switching (at 13.56MHz operating frequency) (*5) Operating temperature/humidity (*2) 0C° ~ 40C°(32°F~104°F)/20%RH ~ 90%RH 40C° ~ 50C°(104°F~122°F)/50%RH or less Basic material Uses plastic material such as PET which exerts minimal effects on the environment even if incinerated. Nonvolatile memory Type4K bytes FRAM User memory 2,464 bytes (16 bytes ×154 blocks) Data Retention Performance 10 years (at 70C°(158°F)) Rewrite endurance 10 billion times (at 55C°(131°F)) * Continuous read = 1 billion times (at 55C°(131°F)) Security Embedded IC chip (RC- S962)Hardware: ISO/IEC ("Common Criteria for Security Evaluation") EAL4+ Composite: ISO/IEC ("Common Criteria for Security Evaluation") EAL4 Storage temperature/humidity -10C° ~ +60C°(14°F~140°F)/60%RH or less
Communication Protocol Physical layer – This layer defines the physical and electrical characteristics of data transfer Data link layer – This layer defines the data transfer method and the error detection scheme. Application layer – This layer defines the specifications and functions of data strings to be handled as commands.
Communication Protocol Application layer Require AuthenticationNot Require Authentication
Communication Protocol Anti-collision – Using IDm Time Out – Using PMm
Block – Smallest unit of File System – Data is divided into blocks of 16 bytes. – RC-S885 (154 blocks are available)
File System Service – All access to the Block is performed by using service – Each service regulate a range of block – Service is called using Service code
File System Service – Types Random Service – This is the general-purpose Service. This Service provides access to Block and can read and write data by specifying any Block. Cyclic Service – This is the Service that assumes the role of log management. This Service provides access to Block and deletes the oldest data every time new data is written. Purse Service – This Service provides access to Block and automatically performs numerical operations on specific data in the Block
File System Service – Service code Example: Read / Write Access: Service Code of Random Service that requires authentication ( )b = 12c8h
File System Service – Service code
File System Area – Its possible that a area contain some areas – Area 0 is the root area (area code = 0000h) – Each area is distinguished by area code (2bytes)
File System System – Reader/Writer only work for one system at a time – Each system is distinguished by system code (2 bytes) – Switching between Systems using Idm – Include several Area
Commands Polling command Request Service Request Response Read Without Encryption Write Without Encryption Request System Code Authentication1 Authentication2 Read Write
Commands Polling command – Use this command to acquire and identify a card Request Response
Commands Request Service – Use this command to check for the existence of Area / Service specified by Area Code / Service Code Request Response – Use this command to check whether a card exists Read Without Encryption – Use this command to read Block Data from a Service that requires no authentication.
Commands Write Without Encryption – Use this command to write Block Data to a Service that requires no authentication. Request System Code – Use this command to acquire System Code of the System located on a card. – If a card is divided into multiple System, this command acquires System Code of all the System existing in the card. Authentication 1 – Use this command to authenticate cards
Commands Authentication 2 – Use this command to allow a card to authenticate a Reader/Writer. Read – Use this command to read Block Data from a Service that requires authentication. Write – Use this command to write Block Data to a Service that requires authentication.