28F400BX-TB 参数 Datasheet PDF下载

28F400BX-T B 28F004BX-T B

Intel’s 4-Mbit Flash Memory Family is an extension of the Boot Block Architecture which includes block-selec-

tive erasure automated write and erase operations and standard microprocessor interface The 4-Mbit Flash

Memory Family enhances the Boot Block Architecture by adding more density and blocks x8 x16 input out-

put control very high speed low power an industry standard ROM compatible pinout and surface mount

packaging The 4-Mbit flash family is an easy upgrade from Intel’s 2-Mbit Boot Block Flash Memory Family

The Intel 28F400BX-T B are 16-bit wide flash memory offerings These high density flash memories provide

user selectable bus operation for either 8-bit or 16-bit applications The 28F400BX-T and 28F400BX-B are

4 194 304-bit non-volatile memories organized as either 524 288 bytes or 262 144 words of information They

are offered in 44-Lead plastic SOP and 56-Lead TSOP packages The x8 x16 pinout conforms to the industry

standard ROM EPROM pinout

The Intel 28F004BX-T B are 8-bit wide flash memories with 4 194 304 bits organized as 524 288 bytes of

information They are offered in a 40-Lead TSOP package which is ideal for space-constrained portable

systems

These devices use an integrated Command User Interface (CUI) and Write State Machine (WSM) for simplified

word byte write and block erasure The 28F400BX-T 28F004BX-T provide block locations compatible with

Intel’s MCS-186 family 80286 i386

TM

i486

TM

i860

TM

and 80960CA microprocessors The 28F400BX-B

28F004BX-B provide compatibility with Intel’s 80960KX and 80960SX families as well as other embedded

microprocessors

The boot block includes a data protection feature to protect the boot code in critical applications With a

maximum access time of 60 ns these 4-Mbit flash devices are very high performance memories which

interface at zero-wait-state to a wide range of microprocessors and microcontrollers A deep power-down

mode lowers the total V

CC

power consumption to 1

mW

This is critical in handheld battery powered systems

For very low power applications using a 3 3V supply refer to the Intel 28F400BL-T B 28F004BL-T B 4-Mbit

Boot Block Flash Memory Family datasheet

Manufactured on Intel’s 0 8 micron ETOX III process the 4-Mbit flash memory family provides world class

quality reliability and cost-effectiveness at the 4-Mbit density level

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