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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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ST25TA02K-P датащи(PDF) 20 Page - STMicroelectronics |
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ST25TA02K-P датащи(HTML) 20 Page - STMicroelectronics |
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20 / 64 page  ST25TA02K-P memory management ST25TA02K-P 20/64 DocID027794 Rev 2 3 ST25TA02K-P memory management 3.1 Memory structure The ST25TA02K-P supports the NDEF Tag Application as defined in the NFC Forum Type 4 Tag. The ST25TA02K-P is composed of three files: • One Capability Container file • One NDEF file • One System file: this file is an ST-proprietary file The System file contains some information on the configuration of the ST25TA02K-P device. The CC file gives some information about the ST25TA02K-P itself and the NDEF file. The NDEF file contains the User data. 3.1.1 File identifier The file identifier is the value used in the Select command to select a file. 3.1.2 CC file layout The CC file gives some information about the ST25TA02K-P and the NDEF file. This file is a read-only file for the RF host and cannot be modified by issuing a write command. The T field, Read Access and Write Access fields can be changed by the RF host by issuing a specific process (refer to Section 7: Functional procedures). Table 3. File identifier File identifier Meaning 0xE101 System file 0xE103 CC file 0x0001 NDEF file Table 4. CC file layout for 1 NDEF file File offset Meaning Value Comments 0x0000 Length CC file 0x000F 15 bytes 0x0002 Mapping version(1) 0x20 or 0x10 V 2.0 or V 1.0 0x0003 Maximum number of bytes that can be read 0x00FF 255 bytes 0x0005 Maximum number of bytes that can be written 0x0036 54 bytes |
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