TE28F008BE-B120 Ver la hoja de datos (PDF) - Intel

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TE28F008BE-B120

8-MBIT SmartVoltage BOOT BLOCK FLASH MEMORY FAMILY

Intel 

E

8-MBIT SmartVoltage BOOT BLOCK FLASH MEMORY FAMILY

Symbol

WP#

BYTE#

VCC

VPP

GND

NC

Table 2. 28F800/008B Pin Descriptions (Continued)

Type

Name and Function

INPUT

WRITE PROTECT: Provides a method for unlocking the boot block in a

system without a 12 V supply.

When WP# is at logic low, the boot block is locked, preventing

program and erase operations to the boot block. If a program or erase

operation is attempted on the boot block when WP# is low, the

corresponding status bit (bit 4 for program, bit 5 for erase) will be set in

the status register to indicate the operation failed.

When WP# is at logic high, the boot block is unlocked and can be

programmed or erased.

NOTE: This feature is overridden and the boot block unlocked when

RP# is at VHH. This pin is not available on the 44-lead PSOP package.

See Section 3.4 for details on write protection.

INPUT

BYTE# ENABLE: Not available on 28F008B. Controls whether the

device operates in the byte-wide mode (x8) or the word-wide mode

(x16). BYTE# pin must be controlled at CMOS levels to meet the CMOS

current specification in the standby mode.

When BYTE# is at logic low, the byte-wide mode is enabled, where

data is read and programmed on DQ0–DQ7 and DQ15/A–1 becomes the

lowest order address that decodes between the upper and lower byte.

DQ8–DQ14 are tri-stated during the byte-wide mode.

When BYTE# is at logic high, the word-wide mode is enabled,

where data is read and programmed on DQ0–DQ15.

DEVICE POWER SUPPLY: 5.0 V ± 10%, 3.3 ± 0.3 V, 2.7 V–3.6 V

PROGRAM/ERASE POWER SUPPLY: For erasing memory array

blocks or programming data in each block, a voltage either of 5 V ± 10%

or 12 V ± 5% must be applied to this pin. When VPP < VPPLK all blocks

are locked and protected against Program and Erase commands.

GROUND: For all internal circuitry.

NO CONNECT: Pin may be driven or left floating.

SEE NEW DESIGN RECOMMENDATIONS

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