MBM29LV400TC Fujitsu Microelectronics, Inc., MBM29LV400TC Datasheet - Page 12

• Manufacturer Part Number: MBM29LV400TC
• Description: 4m 512k X 8/256k X 16 Bit
• Manufacturer: Fujitsu Microelectronics, Inc.

12
MBM29LV400TC
*1: A
*2: Outputs 01H at protected sector addresses and outputs 00H at unprotected sector addresses.
(B): Byte mode
(W): Word mode
Manufacturer’s Code
Device
Code
Sector Protection
Manufacture’s Code
Device Code
Sector Protection
The manufacturer and device codes may also be read via the command register, for instances when the
MBM29LV400TC/BC are erased or programmed in a system without access to high voltage on the A
command sequence is illustrated in Table 7. (Refer to Autoselect Command section.)
Byte 0 (A
code (MBM29LV400TC = B9H and MBM29LV400BC = BAH for 8 mode; MBM29LV400TC = 22B9H and
MBM29LV400BC = 22BAH for 16 mode). These two bytes/words are given in the tables 4.1 and 4.2. All identifiers
for manufactures and device will exhibit odd parity with DQ
device codes when executing the autoselect, A
-1
is for Byte mode.
MBM29LV400TC
MBM29LV400BC
0
Type
= V
Table 4 .1 MBM29LV400TC/400BC Sector Protection Verify Autoselect Codes
IL
MBM29LV400TC
MBM29LV400BC
) represents the manufacturer’s code (Fujitsu = 04H) and (A
Type
(B)
(B) BAH A
(W) 22B9H
(W) 22BAH
Code
B9H A
04H
01H
Table 4 .2 Expanded Autoselect Code Table
-70/-90/-12
Word
Word
Byte
Byte
DQ
A
A
-1
0
0
-1
-1
-1
/0
/0
15
Addresses
DQ
HI-Z HI-Z HI-Z HI-Z HI-Z HI-Z HI-Z
HI-Z HI-Z HI-Z HI-Z HI-Z HI-Z HI-Z
A
0
0
0
0
12
Sector
14
to A
X
X
X
/MBM29LV400BC
DQ
0
1
1
0
1
13
17
must be V
DQ
0
0
0
0
12
DQ
V
V
V
V
A
0
0
0
0
IL
IL
IL
IL
6
11
7
IL
defined as the parity bit. In order to read the proper
. (See Tables 4.1 and 4.2.)
DQ
0
0
0
0
10
DQ
V
V
V
V
A
0
1
1
0
IL
IL
IL
IH
1
9
DQ
0
0
0
0
0
8
= V
DQ
0
1
1
1
1
0
V
V
V
V
IH
A
7
IH
IH
) represents the device identifier
IL
IL
0
DQ
0
0
0
0
0
0
-70/-90/-12
6
DQ
0
1
1
1
1
0
5
A
V
V
V
V
DQ
X
X
-1 *1
IL
IL
IL
IL
0
1
1
1
1
0
4
DQ
0
1
1
1
1
0
3
Code (HEX)
DQ
1
0
0
0
0
0
22BAH
22B9H
01H
9
BAH
2
B9H
04H
pin. The
DQ
0
0
0
1
1
0
*2
1
DQ
0
1
1
0
0
1
0