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PDF MBM29LV080A-90 Data sheet ( Hoja de datos )
| Número de pieza | MBM29LV080A-90 | |
| Descripción | 8M (1M x 8) BIT FLASH MEMORY | |
| Fabricantes | Fujitsu | |
| Logotipo |  |
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FUJITSU SEMICONDUCTOR
DATA SHEET
FLASH MEMORY
CMOS
8M (1M × 8) BIT
MBM29LV080A-70/-90/-12
DS05-20870-4E
s FEATURES
• Address specification is not necessary during command sequence
• Single 3.0 V read, program and erase
Minimizes system level power requirements
• Compatible with JEDEC-standard commands
Uses same software commands as E2PROMs
• Compatible with JEDEC-standard world-wide pinouts
40-pin TSOP (I) (Package suffix: PTN-Normal Bend Type, PTR-Reversed Bend Type)
• Minimum 100,000 program/erase cycles
s PRODUCT LINE UP
Part No.
Ordering Part No.
VCC
=
3.3
V
+0.3 V
–0.3 V
VCC
=
3.0
V
+0.6 V
–0.3 V
Max. Address Access Time (ns)
Max. CE Access Time (ns)
Max. OE Access Time (ns)
s PACKAGE
40-pin plastic TSOP (I)
Marking Side
-70
—
70
70
30
MBM29LV080A
—
-90
90
90
35
40-pin plastic TSOP (I)
(Continued)
—
-12
120
120
50
(FPT-40P-M06)
Marking Side
(FPT-40P-M07)
1 page  
s BLOCK DIAGRAM
MBM29LV080A-70/-90/-12
VCC
VSS
WE
RESET
CE
OE
RY/BY
Buffer
RY/BY
Erase Voltage
Generator
DQ0 to DQ7
Input/Output
Buffers
State
Control
Command
Register
Program Voltage
Generator
Chip Enabl
Output Enable
Logic
STB Data Latch
A0 to A19
Low VCC Detector
Time for
Program/Erase
Y-Decoder
STB
Address
Latch
X-Decoder
Y-Gating
Cell Matrix
5
5 Page 
MBM29LV080A-70/-90/-12
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 com-
mand register is written by bringing WE to VIL, while CE is at VIL and OE is at VIH. 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 MBM29LV080A features hardware sector protection. This feature will disable both program and erase
operations in any number of sectors (0 through 15). 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 VID on address pin A9 and control pin OE, (suggest
VID = 11.5 V), CE = VIL, A0 = A6 = VIL, and A1 = VIH. The sector addresses (A19, A18, A17,and A16) should be set to
the sector to be protected. Tables 4 and 5 define the sector address for each of the sixteen (16) individual sectors.
Programming of the protection circuitry begins on the falling edge of the WE pulse and is terminated with the
rising edge of the same. Sector addresses must be held constant during the WE pulse. See figures 13 and 21
for sector protection waveforms and algorithm.
To verify programming of the protection circuitry, the programming equipment must force VID on address pin A9
with CE and OE at VIL and WE at VIH. Scanning the sector addresses (A19, A18, A17,and A16) while (A10, A6, A1,
A0) = (0, 0, 1, 0) will produce a logical “1” code at device output DQ0 for a protected sector. Otherwise the devices
will read 00H for unprotected sector. In this mode, the lower order addresses, except for A0, A1, A6, and A10 are
DON’T CARES. Address locations with A1 = VIL are reserved for Autoselect manufacturer and device codes.
It is also possible to determine if a sector is protected in the system by writing an Autoselect command. Performing
a read operation at the address location XX02H, where the higher order addresses (A19, A18, A17,and A16). are
the sector address will produce a logical “1” at DQ0 for a protected sector. See Tables 3.1 and 3.2 for Autoselect
codes.
Temporary Sector Unprotection
This feature allows temporary unprotection of previously protected sectors of the MBM29LV080A device in order
to change data. The Sector Unprotection mode is activated by setting the RESET pin to high voltage (12 V).
During this mode, formerly protected sectors can be programmed or erased by selecting the sector addresses.
Once the 12 V is taken away from the RESET pin, all the previously protected sectors will be protected again.
See figure 15 and 22.
11
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