BM29F400B-90PI Ver la hoja de datos (PDF) - Unspecified
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BM29F400B-90PI Datasheet PDF : 38 Pages
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BRIGHT
Microelectronics
Inc.
Preliminary BM29F400T/BM29F400B
Table 2. Bus Operations ( BYTE = VIL)(1)
OPERATION
Electronic ID Manufacturer(2)
Electronic ID Device(2)
Read(3)
CE OE WE A0 A1 A6 A9 DQ0-DQ7 DQ8-DQ15
L
L
H
L
L
L
VID Code
High Z
L
L
H
H
L
L
VID Code
High Z
L
L
H
A0 A1 A6 A9 DOUT
High Z
Standby
HX
X
X X X X High Z
High Z
Hardware Reset
XX
X
X X X X High Z
High Z
Output Disable
Write
Verify Sector Protect(2)
L
H
H
X X X X High Z
L
H
L
A0 A1 A6 A9 DIN(4)
L
L
H
L
H
L
VID Code
High Z
High Z
High Z
Temporary Sector Unprotect
XX
X
XXXXX
High Z
Notes:
1. L = VIL, H = VIH, X = Don't Care. See DC Characteristics for voltage levels.
2. Manufacturer and device codes may also be accessed via a command register sequence. Refer to Table 6.
3. WE can be VIL if CE is VIL, OE at VIH initiates the write operations.
4. Refer to Table 6 for valid DIN during a write operation.
RESET
H
H
H
H
L
H
H
H
VID
Table 3. Sector Protection Verify Electronic ID Codes
TYPE
A17-A12
A6
A1
Manufacturer Code
X
VIL
VIL
29F400T
Byte
X
VIL
VIL
29F400
W ord
29F400B
Byte
X
VIL
VIL
W ord
Sector Protection
Sector Address
VIL
VIH
Note: Outputs 01H at protected sector addresses, and outputs 00H at unprotected addresses.
A0
Code (Hex)
VIL
ADH
VIH
23H
22,23H
VIH
ABH
22 ABH
VIL
01H(1)
A Winbond Company
Publication Release Date: May 1999
-5-
Revision A1
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