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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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AT25QL321 датащи(PDF) 59 Page - Dialog Semiconductor |
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AT25QL321 датащи(HTML) 59 Page - Dialog Semiconductor |
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59 / 79 page  58 AT25QL321 DS-25QL321–131C–5/2017 Table 7-8. SFDP Parameters Table 2 7.36 Enter Secured OTP (B1h) The Enter Secured OTP instruction is for entering the additional 4K-bit secured OTP mode. The additional 4K-bit secured OTP is independent from main array, which may be used to store unique serial number for system identifier. After entering the Secured OTP mode, and then follow standard read or program, procedure to read out the data or update data. The Secured OTP data cannot be updated again once it is lock-down Please note that Write Status Register-1, Write Status Register-2 and Write Security Register instructions are not acceptable during the access of secure OTP region. Once security OTP is lock down, only commands related with read are valid. The Enter Secured OTP instruction sequence is shown in Figure 7-59. Description Comment Address (h) Byte Address (Bit) Data (b) (Bit) Data (h) (Byte) VCC Minimum Voltage 1650h: 1.65V, 1700h: 1.70V, 2300h: 2.30V, 2500h: 2.50V, 2700h: 2.70V 80h 81h 15:0 0000 0000 0001 0111 00h 17h VCC Maximum Voltage 1950h: 1.95V, 3600h: 3.60V, 4000h: 4.00V, 4400h: 4.40V 82h 83h 31:16 0000 0000 0010 0000 00h 20h Array Protection Method 10b: use non-volatile status register 84h 85h 01:00 00 00h 00h Power up Protection default 0: power up unprotected, 1: power up protected 02 0 Protection Disable Opcodes 011b: use status register 05:03 00 0 Protection Enable Opcodes 011b: use status register 08:06 0 00 Protection Read Opcodes 011b: use status register 11:09 000 Protection Register Erase Opcode 00b: not supported, 01b: Opcodes 3Dh,2Ah,7Fh,CFh, 13:12 00 Protection Register Program Opcode 00b: not supported, 01b: Opcodes 3Dh,2Ah,7Fh,FCh 15:14 00 Reserved FFh 86h 23:16 1111 1111 FFh Reserved FFh 87h 31:24 1111 1111 FFh Reserved FFh 88h-FFh Reserved |
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