Specifications

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A. Read ID using CPU Command Mode
It is available to read product identification information that the device has
through Read ID operation. Registers are set as shown in the following flow chart.
Figure 4-37. Read ID – Flowchart
Read ID – CPU Command Mode
REG Description Value
0x50 NAND flash On 0x0001
0x52
CLE(command latch enable) cycle
generation
0x0121 Read ID command =0x90
0x54
ALE(address latch enable) cycle
generation
0x0001 Read ID address =0x00
0x56 Read cycle generation 0x0001
2 repeat
1st byte: Marker code
2nd byte: Device code
3rd byte: Don’t care (optional)
4th byte: Device size (optional)
Table 4-38. Read ID – CPU Command Mode