28F002BC Ver la hoja de datos (PDF) - Intel
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28F002BC Datasheet PDF : 37 Pages
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28F002BC 2-MBIT BOOT BLOCK FLASH MEMORY
Reprogrammable systems, such as personal
computers, are ideal applications for the
28F002BC. Portable and hand-held personal
computer applications are becoming more complex
with the addition of power management software to
take advantage of the latest microprocessor
technology, the availability of ROM-based
application software, pen tablet code for electronic
handwriting, and diagnostic code. Figure 1 shows
an example 28F002BC application.
The increase in software sophistication augments
the probability that a code update will be required
after the PC is shipped. The 28F002BC provides a
safe and inexpensive update solution for desktop,
notebook, and hand-held personal computers while
extending the product lifetime. Furthermore, the
deep power-down mode provides added flexibility
for those battery-operated portable designs that
require low power.
The 28F002BC is also an excellent design solution
for analog and digital cellular phone and
telecommunication switching applications requiring
high-performance, high-density storage in a small
form factor package (x8-only bus). The blocking
structure allows for easy segmentation of
embedded code for modular software designs. For
example, the parameter block can be used for
frequently updated data storage and diagnostic
messages (e.g., phone numbers and authorization
codes).
1.4 Pinouts
The 28F002BC in the 44-lead PSOP pinout follows
the industry-standard ROM/EPROM pinout, as
shown in Figure 4. The 2-Mbit SmartVoltage pinout,
indicating the WP# input, is also shown in the same
diagram. The 40-lead TSOP package (shown in
Figure 2) offers the smallest form factor possible in
addition to being compatible with its SmartVoltage
upgrade in the same package. The low-cost 40-lead
PDIP package diagram is shown in Figure 3.
28F002BV
A 16
A 15
A
A
16
15
1
2
A 14 A 14
3
A 13 A 13
4
A 12 A 12
5
A 11 A 11
6
A9
A9
7
A8
WE#
WAE#8
8
9
RP# RP#
10
VPP VPP
11
WP#
NC
12
NC NC
13
A7
A7
14
A6
A6
15
A5
A4
A5
A4
16
17
A3
A3
18
A2
A2
19
A1
A1
20
E28F002BC
BOOT BLOCK
40-LEAD TSOP
10 mm x 20 mm
TOP VIEW
28F002BV
40
A17 A17
39
GND GND
38
NC NC
37
NC NC
36
A10 A10
35
DQ7 DQ7
34
DQ6 DQ6
33
DQ5 DQ5
32
DQ4 DQ4
31
VCC VCC
30
VCC VCC
29
NC NC
28
DQ3 DQ3
27
DQ2 DQ2
26
DQ1 DQ1
25
DQ0 DQ0
24
OE# OE#
23
GND GND
22
CE# CE#
21
A0
A0
0578_02
Figure 2. The 40-Lead TSOP Offers the Smallest Form Factor for Space-Constrained Applications
PRELIMINARY
7
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