EN25QH256 Datasheet, PDF (33/74 Pages) Eon Silicon Solution Inc. – 256 Megabit Serial Flash Memory with 4Kbyte Uniform Sector

EN25QH256
Exit 4-byte mode (EX4B) (E9h)
The EX4B instruction is executed to exit the 4-byte address mode and return to the default 3-bytes
address mode. After sending out the EX4B instruction, the bit 2 (4 BYTE bit) of Information register will
be cleared to be ”0” to indicate the exit of the 4-byte address mode. Once exiting the 4-byte address
mode, the address length will return to 24-bit.
The sequence of issuing EX4B instruction is: CS# goes low -> sending EX4B instruction to exit 4-byte
mode (automatically clear the 4 BYTE bit to be “0”) -> CS# goes high, as shown in Figure 13.
The instruction sequence is shown in Figure 13.1 while using the Enable Quad Peripheral Interface
mode (EQPI) (38h) command.
Figure 13. Exit 4-byte mode Instruction Sequence Diagram
Figure 13.1 Enter / Exit 4-byte mode Instruction Sequence under EQPI Mode
This Data Sheet may be revised by subsequent versions
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or modifications due to changes in technical specifications.
©2004 Eon Silicon Solution, Inc.,
Rev. E, Issue Date: 2012/01/30
www.eonssi.com