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H27UCG8T2BTR-BC 데이터시트(PDF) 42 Page - Hynix Semiconductor |
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H27UCG8T2BTR-BC 데이터시트(HTML) 42 Page - Hynix Semiconductor |
42 / 56 page H27UCG8T2BTR-BC 64Gb(8192M x 8bit) MLC NAND Flash Rev 0.1 / Oct. 2012 42 I/Ox 90h CLE WE# RE# ADh 00h ALE DEh 94h EBh 74h 44h tWHR Figure 37 : Read ID 4.7. Read ID The device contains a product identification mode, initiated by writing 90h to the command register, followed by an address input of 00h. Six read cycles sequentially output the manufacturer code (ADh), and the device code and 3rd, 4th, 5th, 6th cycle ID, respectively. The command register remains in Read ID mode until further commands are issued to it. Figure 37 shows the operation sequence, while 2.10 READ ID data tables explain the byte meaning. Figure 39 : Multi plane read status 4.8. Read Status Register The device contains a Status Register which may be read to find out whether read, program or erase operation is completed, and whether the program or erase operation is completed successfully. After writing Read Status (70h) or Multi Plane Read Status (78h,75h) command to the command register, a read cycle outputs the content of the Status Register to the I/O pins only if CE# and RE# are low, whichever occurs last. This two line control allows the system to poll the progress of each device in multiple memory connections even when R/B# pins are common-wired. Refer to 2.8. STATUS REGISTER CODINGS for specific Status Register definitions and Figure 38, Figure 39 for Read Status. The command register remains in Read Status mode until further commands are issued to it. Therefore, if the status register is read during a random read cycle, the read command (00h) should be given before starting read cycles. Figure 38 : Read status |
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