TB28F400BVT80 Intel, TB28F400BVT80 Datasheet - Page 5

• Manufacturer Part Number: TB28F400BVT80
• Manufacturer: Intel

Specifications of TB28F400BVT80

• Density: 4Mb
• Access Time (max): 80ns
• Interface Type: Parallel
• Boot Type: Top
• Address Bus: 19/18Bit
• Operating Supply Voltage (typ): 3.3/5V
• Operating Temp Range: -40C to 85C
• Package Type: SOP
• Sync/async: Asynchronous
• Operating Temperature Classification: Industrial
• Operating Supply Voltage (min): 3/4.5V
• Operating Supply Voltage (max): 3.6/5.5V
• Word Size: 8/16Bit
• Number Of Words: 512K/256K
• Supply Current: 70mA
• Mounting: Surface Mount
• Pin Count: 44
• Lead Free Status / Rohs Status: Not Compliant

1.0
This datasheet contains the specifications for the
two branches of products in the SmartVoltage
4-Mbit boot block flash memory family: the -BE/CE
suffix products feature a low V
of 2.7 V–3.6 V; the -BV/CV suffix products offer
3.0 V–3.6 V operation. Both BE/CE and BV/CV
products also operate at 5 V for high-speed
access times. Throughout this datasheet, the
28F400 refers to all x8/x16 4-Mbit products, while
28F004B refers to all x8 4-Mbit boot block
products. Also, the term “2.7 V” generally refers to
the full voltage range 2.7 V–3.6 V. Section 1.0
provides an overview of the flash memory family
including
descriptions. Sections 2.0 and 3.0 describe the
memory organization and operation for these
products. Section 4.0 contains
operating specifications. Finally, Sections 5.0 and
6.0 provide ordering and document reference
information.
1.1
The SmartVoltage boot block flash memory family
offers identical operation with the BX/BL 12 V
program products, except for the differences listed
below. All other functions are equivalent to current
products, including signatures, Write commands,
and pinouts.
28F004BV-T/B
28F400BV-T/B
28F400CV-T/B
28F004BE-T/B
28F400CE-T/B
SEE NEW DESIGN RECOMMENDATIONS
WP# pin has replaced a DU (Don’t Use) pin.
Connect the WP# pin to control signal or to
V
can be placed on DU pin). See Tables 2 and 9
to see how the WP# pin works.
Product
CC
Name
PRODUCT FAMILY OVERVIEW
or GND (in this case, a logic-level signal
New Features in the
SmartVoltage Products
applications,
x8 or x16
x8 or x16
x8 or x16
Width
Bus
x8
x8
Table 1. SmartVoltage Provides Total Voltage Flexibility
pinouts
CC
2.7 V–3.6 V
operating range
the family’s
and
pin
3.3
V
CC
0.3 V
4-MBIT SmartVoltage BOOT BLOCK FAMILY
If you are using BX/BL 12 V V
products today, you should account for the
differences listed above and also allow for
connecting 5 V to V
from V
1.2
Intel’s SmartVoltage technology is the most
flexible voltage solution in the flash industry,
providing two discrete voltage supply pins: V
read operation, and V
operation. Discrete supply pins allow system
designers to use the optimal voltage levels for
their design. The 28F400BV/CV, 28F004BV,
28F400CE and 28F004BE provide program/erase
capability at 5 V or 12 V. The 28F400BV/CV and
28F004BV allow reads with V
5 V, while the 28F400CE and 28F004BE allow
reads with V
designs read from the flash memory a large
percentage of the time, read operation using the
2.7 V or 3.3 V ranges can provide great power
savings. If read performance is an issue, however,
5 V V
5 V program/erase operation has been added.
If switching V
GND (not 5 V) for complete write protection.
To take advantage of 5 V write-capability,
allow for connecting 5 V to V
disconnecting 12 V from V
Enhanced
performance, allowing operation down to
V
CC
CC
5 V
5 V
PP
= 2.7 V (using the BE product).
provides faster read access times.
line, if 5 V writes are desired.
Main Features
10%
5%
CC
at 2.7 V–3.6 V or 5 V. Since many
circuits
PP
5 V
for write protection, switch to
PP
PP
and disconnecting 12 V
for program and erase
10%
optimize
CC
PP
V
line.
PP
at 3.3
PP
12 V
boot block
low
0.3 V or
PP
5%
CC
V
and
for
CC
5