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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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IS25LE512MG-RMLA2:PTY датащи(PDF) 119 Page - Integrated Silicon Solution, Inc |
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IS25LE512MG-RMLA2:PTY датащи(HTML) 119 Page - Integrated Silicon Solution, Inc |
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119 / 194 page  IS25LE512MG IS25WE512MG Integrated Silicon Solution, Inc.- www.issi.com 119 Rev. A6 10/02/2025 8.35 READ UNIQUE ID NUMBER (RDUID, 4Bh) The Read Unique ID Number (RDUID) instruction accesses a factory-set read-only 16-byte number that is unique to the device. The ID number can be used in conjunction with user software methods to help prevent copying or cloning of a system. The RDUID instruction is instated by driving the CE# pin low and shifting the instruction code (4Bh) followed by 3 address bytes and dummy cycles (configurable, default is 8 clocks). After which, the 16-byte ID is shifted out on the falling edge of SCK as shown below. As a result, the sequence of RDUID instruction is same as FAST READ. RDUID sequence in QPI mode is also same as FAST READ sequence in QPI mode except for the instruction code. Refer to the FAST READ operation in QPI mode. Note: 16 bytes of data will repeat as long as CE# is low and SCK is toggling. Figure 8.76 RDUID Sequence In SPI Mode Instruction = 4Bh Dummy Cycles CE # SCK SI SO 0 1 ... 7 8 9 ... 31 32 33 ... 39 40 41 ... 47 Mode 3 Mode 0 3 Byte Address Data Out tV ... Note: Dummy cycles depends on Read Parameter setting. Detailed information in Table 6.11 Read Dummy Cycles. Table 8.9 Unique ID Addressing A[23:16] A[15:9] A[8:4] A[3:0] XXh XXh 00h 0h Byte address XXh XXh 00h 1h Byte address XXh XXh 00h 2h Byte address XXh XXh 00h XXh XXh 00h Fh Byte address Note: XX means “don’t care”. |
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