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TE28F400B3BA110 Datasheet(PDF) 11 Page - Intel Corporation

Part # TE28F400B3BA110
Description  SMART 3 ADVANCED BOOT BLOCK 4-, 8-, 16-, 32-MBIT FLASH MEMORY FAMILY
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Manufacturer  INTEL [Intel Corporation]
Direct Link  http://www.intel.com
Logo INTEL - Intel Corporation

TE28F400B3BA110 Datasheet(HTML) 11 Page - Intel Corporation

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E
SMART 3 ADVANCED BOOT BLOCK
11
PRELIMINARY
Table 2. Smart 3 Advanced Boot Block Pin Descriptions (Continued)
Symbol
Type
Name and Function
VCCQ
INPUT
OUTPUT VCC: Enables all outputs to be driven to 1.8 V – 2.5 V while
the VCC is at 2.7 V–3.3 V. If the VCC is regulated to 2.7 V–2.85 V, VCCQ
can be driven at 1.65 V–2.5 V to achieve lowest power operation (see
Section 4.4,
DC Characteristics.
This input may be tied directly to VCC (2.7 V–3.6 V).
VCC
DEVICE POWER SUPPLY: 2.7 V–3.6 V
VPP
PROGRAM/ERASE POWER SUPPLY: Supplies power for program
and erase operations. VPP may be the same as VCC (2.7 V–3.6 V) for
single supply voltage operation. For fast programming at manufacturing,
11.4 V–12.6 V may be supplied to VPP. This pin cannot be left floating.
Applying 11.4 V–12.6 V to VPP can only be done for a maximum of 1000
cycles on the main blocks and 2500 cycles on the parameter blocks.
VPP may be connected to 12 V for a total of 80 hours maximum (see
Section 3.4 for details).
VPP < VPPLK protects memory contents against inadvertent or
unintended program and erase commands.
GND
GROUND: For all internal circuitry. All ground inputs must be
connected.
NC
NO CONNECT: Pin may be driven or left floating.
2.2
Block Organization
The
Smart
3
Advanced
Boot
Block
is
an
asymmetrically-blocked architecture that enables
system integration of code and data within a single
flash
device.
Each
block
can
be
erased
independently of the others up to 100,000 times.
For the address locations of each block, see the
memory maps in Appendix D.
2.2.1
PARAMETER BLOCKS
The Smart 3 Advanced Boot Block flash memory
architecture includes parameter blocks to facilitate
storage of frequently updated small parameters
(e.g., data that would normally be stored in an
EEPROM). By using software techniques, the word-
rewrite functionality of EEPROMs can be emulated.
Each device contains eight parameter blocks of
8-Kbytes/4-Kwords (8192 bytes/4,096 words) each.
2.2.2
MAIN BLOCKS
After the parameter blocks, the remainder of the
array is divided into equal size main blocks (65,536
bytes / 32,768 words) for data or code storage. The
4-Mbit device contains seven main blocks; 8-Mbit
device contains fifteen main blocks; 16-Mbit flash
has thirty-one main blocks; 32-Mbit has sixty-three
main blocks.
3.0
PRINCIPLES OF OPERATION
Flash memory combines EEPROM functionality
with
in-circuit
electrical
program
and
erase
capability. The Smart 3 Advanced Boot Block flash
memory family utilizes a Command User Interface
(CUI) and automated algorithms to simplify program
and erase operations. The CUI allows for 100%
CMOS-level control inputs and fixed power supplies
during erasure and programming.


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