V29C31004B-12J 데이터 시트보기 (PDF) - Mosel Vitelic Corporation
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V29C31004B-12J Datasheet PDF : 15 Pages
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MOSEL VITELIC
Boot Block Protection Status
In Autoselect mode, performing a read at
address location 3CXX2H (V29C31004T) or
0CXX2H (V29C31004B) will indicate boot block
protection status. If the data is 01H, the boot block
is protected. If the data is 00H, the boot block is
unprotected. This is also shown is table 3.
Device ID
In Autoselect mode, performing a read at
address XXX1H will determine whether the device
is a Top Boot Block device or a Bottom Boot Block
device. If the data is 63H, the device is a Top Boot
Block. If the data is 73H, the device is a Bottom
Boot Block device (see Table 3).
V29C31004T/V29C31004B
Manufacturer ID
In Autoselect mode, performing a read at
address XXXX0H will determine the manufacturer
ID. 40H is the manufacturer code for Mosel Vitelic
Flash.
Hardware Data Protection
VCC Detection: the program operation is inhibited
when VCC is less than 2.5V.
Noise Protection: a CE or WE pulse of less than
5ns will not initiate a program cycle.
Program Inhibit: holding any one of OE LOW, CE
HIGH or WE HIGH inhibits a program cycle.
Table 3. Autoselect Decoding
Decoding Mode
Boot Block
Boot Block Protection
Top
Bottom
Device ID
Top
Bottom
Manufacture ID
NOTE:
1. X = Don’t Care, VIH = HIGH, VIL = LOW.
Address
A0
A1
A2–A13 A14–A17 Data I/O0–I/O7
VIL
VIH
X
VIH
01H: protected
VIL
VIH
X
VIL
00H: unprotected
VIH
VIL
X
X
63H
73H
VIL
VIL
X
X
40H
V29C31004T/V29C31004B Rev. 0.3 October 2000
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