參數(shù)資料
型號: MBM29LV080A-70
廠商: Fujitsu Limited
英文描述: 8M (1M x 8) BIT
中文描述: 8米(1米× 8)位
文件頁數(shù): 9/49頁
文件大?。?/td> 400K
代理商: MBM29LV080A-70
MBM29LV080A
-70/-90/-12
9
The manufacturer and device codes may also be read via the command register, for instances when the
MBM29LV080A is erased or programmed in a system without access to high voltage on the A
9
pin. The command
sequence is illustrated in Table 6. (Refer to Autoselect Command section.)
Byte 0 (A
0
= V
IL
) represents the manufacture’s code (Fujitsu = 04H) and byte 1 (A
0
= V
IH
) represents the device
identifier code MBM29LV080A = 38H. All identifiers for manufactures and device will exhibit odd parity with DQ
7
defined as the parity bit. In order to read the proper device codes when executing the autoselect, A
1
must be
V
IL
. (See Tables 3.1 and 3.2.)
In order to determine which sectors are write protected, A
1
must be at V
IH
while running through the sector
addresses; if the selected sector is protected, a logical ‘1’ will be output on DQ
0
(DQ
0
= 1).
Table 3.1 MBM29LV080A Sector Protection Verify Autoselect Code
*: Outputs 01H at protected sector addresses and outputs 00H at unprotected sector addresses.
Table 3.2 Expanded Autoselect Code Table
Type
A
16
to A
19
A
10
A
6
A
1
A
0
Code (HEX)
Manufacture’s Code
X
V
IL
V
IL
V
IL
V
IL
04H
Device Code
MBM29LV080A
X
V
IL
V
IL
V
IL
V
IH
38H
Sector Protection
Sector
Addresses
V
IL
V
IL
V
IH
V
IL
01H*
Type
Code
DQ
7
DQ
6
DQ
5
DQ
4
DQ
3
DQ
2
DQ
1
DQ
0
Manufacture’s Code
04H
0
0
0
0
0
1
0
0
Device Code
MBM29LV080A
38H
0
0
1
1
1
0
0
0
Sector Protection
01H
0
0
0
0
0
0
0
1
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相關(guān)代理商/技術(shù)參數(shù)
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MBM29LV080A-70PTR 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:8M (1M x 8) BIT
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