5 Command set
All bus write operations to the device are interpreted by the command interface. The
commands are input on I/O0-I/O7 and are latched on the rising edge of Write Enable when
the Command Latch Enable signal is High. Device operations are selected by writing
specific commands to the command register. The two-step command sequences for
program and erase operations are imposed to maximize data security.
The commands are summarized in Table 9.
Table 9. Commands
Bus write operations(1)(2)
Read Electronic Signature
Read Status Register
Copy Back Program
00h 8Ah (10h)(4)
1. The bus cycles are only shown for issuing the codes. The cycles required to input the addresses or
input/output data are not shown.
2. Any undefined command sequence is ignored by the device.
3. The Read B command (code 01h) is not used in x16 devices.
4. The Program Confirm command (code 10h) is no more necessary for NAND512xxA2D devices. It is
optional and has been maintained for backward compatibility.