BRIGHT
Microelectronics
Inc.
BM29F400T/BM29F400B
BUS OPERATION
(1)
(
= VIH)
Table 1. Bus Operations BYTE
OPERATION
A0
A1
A6
A9
DQ0-DQ15
CE
WE
RESET
OE
L
(2)
Electronic ID Manufacturer
L
L
L
H
X
L
L
L
X
H
L
L
L
VID
Code
Code
H
H
H
H
L
(2)
Electronic ID Device
L
H
H
X
X
H
L
H
L
L
VID
A9
X
(3)
OUT
D
Read
L
A0
X
A1
X
A6
X
Standby
X
High Z
High Z
Hardware Reset
Output Disable
Write
X
X
X
X
X
H
H
L
X
X
X
X
High Z
DIN(4)
X
H
H
A0
L
A1
H
A6
L
A9
VID
X
(2)
Verify Sector Protect
H
X
Code
X
Temporary Sector Unprotect
X
X
X
X
VID
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.
IL
IL
IH
at V initiates the write operations.
OE
3.
can be V if
is V ,
WE
CE
4. Refer to Table 6 for valid D during a write operation.
IN
(1)
(
= VIL)
Table 2. Bus Operations BYTE
OPERATION
A0
A1
A6
A9
DQ0-DQ7
DQ8-DQ15
WE
CE
OE
RESET
(2)
Electronic ID Manufacturer
L
L
L
H
X
L
L
L
X
L
H
L
L
L
VID
Code
High Z
High Z
High Z
High Z
High Z
High Z
High Z
High Z
High Z
H
(2)
ID
V
Electronic ID Device
L
H
H
X
X
H
L
H
L
L
Code
H
H
H
L
(3)
Read
L
A0
X
A1
X
A6
X
A9
X
DOUT
Standby
X
X
H
H
L
High Z
High Z
High Z
Hardware Reset
Output Disable
Write
X
X
X
X
X
X
X
X
H
H
H
IN(4)
D
A0
L
A1
H
A6
L
A9
VID
X
(2)
Verify Sector Protect
H
X
Code
X
ID
V
Temporary Sector Unprotect
X
X
X
X
Notes:
IL
IH
1. L = V , H = V , 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. can be VIL if is VIL, at VIH initiates the write operations.
WE
OE
CE
4. Refer to Table 6 for valid D during a write operation.
IN
- 4 -
WINBOND [ WINBOND ]
