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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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SLE66R01PC датащи(PDF) 21 Page - Infineon Technologies AG |
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SLE66R01PC датащи(HTML) 21 Page - Infineon Technologies AG |
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21 / 55 page  my-d™ move / my-d™ move NFC SLE 66R01P / SLE 66R01PN Memory Organization Data Book 21 / 55 2011-11-24 4.2.3 Locking mechanism Bytes LOCK0, LOCK1 allocated in Block 02 H and LOCK2, LOCK3, LOCK4 and LOCK5 allocated in Block 24H represent the one time field programmable bits which are used to lock the blocks in the specified address range from block 03 H (OTP Block) to 23H. Each block in this range can be individually locked to prevent further write access. A locking mechanism of each block is irreversible, i.e. once the locking information of a particular block (Lx) is set to 1 B it can not be reset back to 0 B any more. Figure 9 illustrates the locking bytes with the corresponding locking bits. Furthermore, it is possible to freeze the locking information of some memory areas by setting Block Locking (BL) bits e.g. if the bit BL 15-10 is set to 1 B then the locking information for the corresponding area (L10 to L15) is not changeable any more. See the example in the Table 7 below. Figure 9 Locking and Block Locking Mechanism The Write One Block (WR1B) command should be used to set the locking or block locking information of a certain block. If WR1B is applied to Block 02 H then: • the Byte 0 (BCC1) will not be changed • the Byte 1 (Configuration Byte) will be changed only if it is not locked If WR1B is applied to Block 24 H then: • the Byte2 [7..4] = Lock4[7..4] and • the Byte3 [7..4] = Lock5[7..4] will not be changed neither. Block 02H LOCK0 LOCK1 L 7 L 6 L 5 L 4 L OTP BL 15-10 BL 9-4 BL OTP L 15 L 14 L 13 L 12 L 11 L 10 L 9 L 8 LOCK2 = 00H LOCK3 = 00H LOCK4 = 00H L 23 L 22 L 21 L 20 L 19 L 18 L 17 L 16 0 0 0 0 L 35 L 34 L 33 L 32 L 31 L 30 L 29 L 28 L 27 L 26 L 25 L 24 0 1 2 0 1 2 3 4 5 6 7 1 2 3 4 5 6 7 0 BL 35-31 BL 30-26 BL 25-21 BL 20-16 LOCK5 = 00H 0 0 0 0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7 0 BCC1 CONFIG Byte0 Byte1 Byte2 Byte3 Byte0 Byte1 Byte2 Byte3 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7 0 Block 24H |
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