MX29LV800BT Macronix, MX29LV800BT Datasheet - Page 20

• Manufacturer Part Number: MX29LV800BT
• Description: 8M-Bit CMOS Single Voltage 3V Only Flash Memory
• Manufacturer: Macronix

MX29LV800BT/BB
Performing a read operation with A1=VIH, it will produce
a logical "1" at Q0 for the protected sector.
CHIP UNPROTECTED
The MX29LV800BT/BB also features the chip unpro-
tected mode, so that all sectors are unprotected after
chip unprotected is completed to incorporate any changes
in the code. It is recommended to protect all sectors
before activating chip unprotected mode.
To activate this mode, the programming equipment must
force VID on control pin OE# and address pin A9. The
CE# pins must be set at VIL. Pins A6 must be set to
VIH. Refer to chip unprotected algorithm and waveform
for the chip unprotected algorithm. The unprotection
mechanism begins on the falling edge of the WE# pulse
and is terminated on the rising edge.
It is also possible to determine if the chip is unprotected
in the system by writing the Read Silicon ID command.
Performing a read operation with A1=VIH, it will produce
00H at data outputs (Q0-Q7) for an unprotected sector.
It is noted that all sectors are unprotected after the chip
unprotected algorithm is completed.
P/N:PM1062
REV. 1.3, DEC. 20, 2004
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