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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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ST25TA02K датащи(PDF) 11 Page - STMicroelectronics |
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ST25TA02K датащи(HTML) 11 Page - STMicroelectronics |
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11 / 50 page  DocID027801 Rev 1 11/50 ST25TA02K ST25TA02K memory management 3 ST25TA02K memory management 3.1 Memory structure The ST25TA02K supports the NDEF Tag Application as defined in the NFC Forum Type 4 Tag. The ST25TA02K 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 device. The CC file gives some information about the ST25TA02K 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 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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