28F002BL-T データシートの表示（PDF） - Intel
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28F002BL-T Datasheet PDF : 42 Pages
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28F200BL-T B 28F002BL-T B
1 0 PRODUCT FAMILY OVERVIEW
Throughout this datasheet 28F200BL refers to both
the 28F200BL-T and 28F200BL-B devices and
28F002BL refers to both the 28F002BL-T and
28F002BL-B devices The 2-Mbit flash family refers
to both the 28F200BL and 28F002BL products This
datasheet comprises the specifications for four sep-
arate products in the 2-Mbit flash memory family
Section 1 provides an overview of the 2-Mbit flash
memory family including applications pinouts and
pin descriptions Sections 2 and 3 describe in detail
the specific memory organizations for the 28F200BL
and 28F002BL products respectively Section 4
combines a description of the family’s principles of
operations Finally section 5 describes the family’s
operating specifications
PRODUCT FAMILY
x8 x16 Products
28F200BL-T
28F200BL-B
x8-Only Products
28F002BL-T
28F002BL-B
1 1 Designing for Upgrade to
SmartVoltage Products
Today’s high volume boot block products are up-
gradable to Intel’s SmartVoltage boot block prod-
ucts that provide program and erase operation at 5V
or 12V VPP and read operation at 3V or 5V VCC
Intel’s SmartVoltage boot block products provide the
following enhancements to the boot block products
described in this data sheet
1 DU pin is replaced by WP to provide a means
to lock and unlock the boot block with logic sig-
nals
2 5V Program Erase operation uses proven pro-
gram and erase techniques with 5V g10% ap-
plied to VPP
3 Enhanced circuits optimize performance at 3 3V
VCC
Refer to the 2 4 or 8 Mbit SmartVoltage Boot Block
Flash Memory Data Sheets for complete specifica-
tions
When you design with 12V VPP boot block products
you should provide the capability in your board de-
sign to upgrade to SmartVoltage products
Follow these guidelines to ensure compatibility
1 Connect DU (WP on SmartVoltage products) to
a control signal or to VCC or GND
2 If adding a switch on VPP for write protection
switch to GND for complete write protection
3 Allow for connecting 5V to VPP and disconnect
12V from line VPP line if desired
1 2 Main Features
The 28F200BL 28F002BL low power boot block
flash memory family is a very low power and very
high performance 2-Mbit (2 097 152 bit) memory
family organized as either 128 Kwords (131 072
words) of 16 bits each or 256 Kbytes (262 144
bytes) of 8 bits each
Five Separately Erasable Blocks including a Hard-
ware-Lockable boot block (16 384 Bytes) two pa-
rameter blocks (8 192 Bytes each) and two main
blocks (1 block of 98 304 Bytes and 1 block of
131 072 Bytes) are included on the 2-Mbit family An
erase operation erases one of the 5 blocks in typi-
cally 3 4 seconds and the boot or parameter blocks
in typically 2 0 seconds independent of the remain-
ing blocks Each block can be independently erased
and programmed 10 000 times
The Boot Block is located at either the top
(28F200BL-T 28F002BL-T) or the bottom
(28F200BL-B 28F002BL-B) of the address map in
order to accommodate different microprocessor pro-
tocols for boot code location The hardware locka-
ble boot block provides the most secure code stor-
age The boot block is intended to store the kernel
code required for booting-up a system When the
RP pin is between 11 4V and 12 6V the boot block
is unlocked and program and erase operations can
be performed When the RP pin is at or below 4 1V
the boot block is locked and program and erase op-
erations to the boot block are ignored
The 28F200BL products are available in the
ROM EPROM compatible pinout and housed in the
44-Lead PSOP (Plastic Small Outline) package and
the 56-Lead TSOP (Thin Small Outline 1 2 mm
thick) package as shown in Figures 3 and 4 The
28F002BL products are available in the 40-Lead
TSOP (1 2 mm thick) package as shown in Figure 5
The Command User Interface (CUI) serves as the
interface between the microprocessor or microcon-
troller and the internal operation of the 28F200BL
and 28F002BL flash memory products
3
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