HY29F400A Hynix Semiconductor, HY29F400A Datasheet - Page 19

• Manufacturer Part Number: HY29F400A
• Description: 4 Megabit (512Kx8/256Kx16) 5 Volt-only Flash Memory
• Manufacturer: Hynix Semiconductor

Power-Up Write Inhibit
If WE# = CE# = V
up, the device does not accept commands on the
rising edge of WE#. The internal state machine is
automatically reset to the Read mode on power-
up.
Rev. 1.0/Jan. 02
IL
and OE# = V
IH
during power
Sector Protection
Additional data protection is provided by the
HY29F400A’s sector protect feature, described
previously, which can be used to protect sensitive
areas of the Flash array from accidental or unau-
thorized attempts to alter the data.
HY29F400A
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