Overview The UltraLight card is a 512-bit contactless IC card. Electrical characteristics The capacity is 512 bits, divided into 16 pages, 4 bytes per page Programmable lock read-only function per page 32-bit user-definable one-time programming area 384-bit user read and write area Data can be retained for 2 years and can be rewritten 1000 times Unique 7-byte serial number Working frequency: 13.56MHZ Communication rate: 106KB baud rate Anti-collision: multiple cards can be processed at the same time Reading and writing distance: within 100mm (related to the antenna) No power in the card Storage structure The UltraLight card has a total of 512 bits and is divided into 16 pages with 4 bytes per page. The storage structure is as follows: Page number Byte 0 Byte 1 Byte 2 Byte 3 Description 0 SN0 SN1 SN2 BCC0 Serial Number 1 SN3 SN4 SN5 SN6 Serial Number 2 BCC1 Reserved Lock0 Lock1 Hold / Lock 3 OTP0 OTP1 OTP2 OTP3 OTP 4 Data0 Data1 Data2 Data3 Data read/write 5 Data4 Data5 Data6 Data7 Data read/write 6 Data8 Data9 Data10 Data11 Data read/write 7 Data12 Data13 Data14 Data15 Data read/write 8 Data16 Data17 Data18 Data19 Data read/write 9 Data20 Data21 Data22 Data23 Data read/write 10 Data24 Data25 Data26 Data27 Data read/write 11 Data28 Data29 Data30 Data31 Data read/write 12 Data32 Data33 Data34 Data35 Data read/write 13 Data36 Data37 Data38 Data39 Data read/write 14 Data40 Data41 Data42 Data43 Data read/write 15 Data44 Data45 Data46 Data47 Data read/write (1) Pages 0 and 1 contain information such as the serial number of the card and are only readable. The check digits are calculated according to ISO/IEC 14443-3 as follows: BCC0=CT⊕SN0⊕SN1⊕SN2 BCC1=SN3⊕SN4⊕SN5⊕SN6 (2) Page 2 is LOCK BYTES. Setting the bits corresponding to Byte 2 and Byte 3 can be individually locked from the 3rd page to the 15th page as a read-only area. Lock0 L 7 L 6 L 5 L 4 L OTP BL 15-10 BL 9-4 BL OTP Lock1 L 15 L 14 L 13 L 12 L 11 L 10 L 9 L 8 Lx locks X pages as read only BLX locks the corresponding Lx bit Note: Once the block-locking (BLX) bit is set to the locked configuration, the corresponding memory area will be frozen. For example, if BL15-10 is set to 1, then L15 to L10 can no longer be changed. Lock0 and Lock1 can be set by a write command, and the written content is bit or operated with the current content to obtain new content, and the initial value is 0. This process is irreversible. If a bit is set to 1, it can no longer be set to 0. (3) Page 3 is OTP, which is one-time programming, and the initial value is 0. It is possible to change its value by writing a command, and the written value and the current value are bitwise ORed to obtain a new value. This process is irreversible. If a bit is set to 1, it will no longer be set to 0. Note: This memory area can be used as a one-time counter with a maximum of 32. (4) Pages 4 to 15 are the user read/write areas with an initial value of 0. Dangerous Goods Transporter,Gas Cylinder Delivery Truck,Natural Gas Trucks,Gas Cylinder Transporter CLW GROUP TRUCK , https://www.clwgrouptruck.net