8-MBIT SmartVoltage BOOT BLOCK FLASH MEMORY FAMILY
PRODUCT FAMILY
OVERVIEW
This datasheet contains the specifications
for the two branches of products in the
SmartVoltage 8-Mbit boot block flash
memory family: the -BE/CE suffix
products feature a low V
CC
operating range
of 2.7–3.6V; the -BV/CV suffix products
offer
3.0–3.6V operation. Both BE/CE and
BV/CV products also operate at 5V for
high-speed access times. Throughout this
datasheet, the 28F800 refers to all x8/x16
8-Mbit products, while 28F008B refers to
all x8 8-Mbit boot block products (but not
to the 28F008SA FlashFile™ Memory).
Also, the term “2.7V” generally means the
full voltage range 2.7–3.6V. Section 1
provides an overview of the flash memory
family including applications, pinouts and
pin descriptions. Sections 2 and 3 describe
the memory organization and operation for
these products. Finally, Sections 4, 5 and 6
contain the family’s operating
specifications.
1.1
New Features in the
SmartVoltage Products
The new 8-Mbit SmartVoltage boot block
flash memory family provides a
convenient density upgrade path from the
2-Mbit and 4-Mbit boot block products.
The 8-Mbit boot block functions similarly
to lower density boot block products in
both command sets and operation,
providing similar pinouts to ease density
upgrades.
1.0
To upgrade from lower density -BX/BL-
suffix 12V program products, please note
the following differences and guidelines:
WP# pin has replaced DU (Don’t Use)
pin #12 in the 40-lead TSOP package.
In the 44-lead PSOP, DU pin #2 is
replaced with A
18
(see Figure 1 and
Section 3.4 for details). Connect the
WP# pin to control signal or to V or
CC
GND (in this case, a logic-level signal
can be placed on DU pin #12 for 40-
lead TSOP). See Tables 2 and 9 to see
how the WP# pin works.
•
5V program/erase operation has been
added. If switching V
PP
for write
protection, switch to GND (not 5V) for
complete write protection. To take
advantage of 5V write-capability, allow
for connecting 5V to V
PP
and
disconnecting 12V from V
PP
line.
•
Enhanced circuits optimize low V
CC
performance, allowing operation down
to V
CC
= 2.7V (using the BE/CE
products).
To upgrade from lower density
SmartVoltage boot block products, the
similar pinouts in the 40-lead and 48-lead
TSOP packages provide easy upgrades by
adding extra address lines (see Figures1
and 3). In the 44-lead TSOP, the WP# pin
on the 2-Mbit and 4-Mbit BV parts
becomes A
18
, removing the capability to
unlock the boot block with a logic-level
signal in this package
only.
The boot block
can still be unlocked with 12V on RP# (see
Figure 2 and Section 3.4 for details).
•
PRODUCT PREVIEW
3
INTEL [ INTEL CORPORATION ]
