參數(shù)資料
型號(hào)： MBM29LV002T-10
廠商： Fujitsu Limited
英文描述： 2M (256K ×8) Bit Flash Memory(2M (256K ×8)位 單5V 電源電壓閃速存儲(chǔ)器)
中文描述： 200萬（256K × 8）位閃存（200萬（256K × 8）位單5V的電源電壓閃速存儲(chǔ)器）
文件頁數(shù)： 11/45頁
文件大?。?/td> 406K
代理商： MBM29LV002T-10
11
MBM29LV002T
-10/-12
/MBM29LV002B
-10/-12
The manufacturer and device codes may also be read via the command register, for instances when the
MBM29LV002T/002B are 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.)
A
0
= V
IL
represents the manufacturer’s code (Fujitsu = 04H) and A
0
= V
IH
represents the device identifier code
(MBM29LV002T = 40H, MBM29LV002B = C2H). All identifiers for manufacturer 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.)
* :Outputs 01H at protected sector addresses and outputs 00H at unprotected sector addresses.
Write
Device erasure and programming are accomplished via the command register. The contents of the register serve
as inputs to the internal state machine. The state machine outputs dictate the function of the device.
The command register itself does not occupy any addressable memory location. The register is a latch used to
store the commands, along with the address and data information needed to execute the command. The
command register is written by bringing WE to V
IL
, while CE is at V
IL
and OE is at V
IH
. Addresses are latched on
the falling edge of WE or CE, whichever happens later; while data is latched on the rising edge of WE or CE,
whichever happens first. Standard microprocessor write timings are used.
Refer to AC Write Characteristics and the Erase/Programming Waveforms for specific timing parameters.
Sector Protection
The MBM29LV002T/002B feature hardware sector protection. This feature will disable both program and erase
operations in any number of sectors (0 through 6). The sector protection feature is enabled using programming
equipment at the user’s site. The device is shipped with all sectors unprotected.
To activate this mode, the programming equipment must force V
ID
on address pin A
9
and control pin OE, (suggest
V
ID
= 11.5 V), CE = V
IL
, and A
6
= V
IL
. The sector addresses (A
17
, A
16
, A
15
, A
14
, and A
13
) should be set to the sector
to be protected. Tables 4 and 5 define the sector address for each of the seven (7) individual sectors. Programming
of the protection circuitry begins on the falling edge of the WE pulse and is terminated with the rising edge of
Table 3.1 MBM29LV002T/B Sector Protection Verify Autoselect Code
Type
A
17
to A
13
A
10
A
6
A
1
A
0
Code (HEX)
Manufacturer’s Code
X
V
IL
V
IL
V
IL
V
IL
04H
Device Code
MBM29LV002T
X
V
IL
V
IL
V
IL
V
IH
40H
MBM29LV002B
X
V
IL
V
IL
V
IL
V
IH
C2H
Sector Protection
Sector
Addresses
V
IL
V
IL
V
IH
V
IL
01H*
Table 3.2 Expanded Autoselect Code Table
Type
Code
DQ
7
DQ
6
DQ
5
DQ
4
DQ
3
DQ
2
DQ
1
DQ
0
Manufacturer’s Code
04H
0
0
0
0
0
1
0
0
Device Code
MBM29LV002T
40H
0
1
0
0
0
0
0
0
MBM29LV002B
C2H
1
1
0
0
0
0
1
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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MBM29LV002TC 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:2M (256K x 8) BIT
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MBM29LV002TC-12PTN 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:2M (256K x 8) BIT
MBM29LV002TC-12PTR 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:2M (256K x 8) BIT
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