A28F400BX-TB

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

selective 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 x8x16 input

output 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 A28F400BX-TB are 16-bit wide flash memory offerings optimized to meet the rigorous environmen-

tal requirements of Automotive Applications These high density flash memories provide user selectable bus

operation for either 8-bit or 16-bit applications The A28F400BX-T and A28F400BX-B are 4194304-bit non-

volatile memories organized as either 524288 bytes or 262144 words of information They are offered in 44-

Lead plastic SOP packages The x8x16 pinout conforms to the industry standard ROMEPROM pinout Read

and Write characteristics are guaranteed over the ambient temperature range of b40 Cto a125 C

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

wordbyte write and block erasure The A28F400BX-T provide block locations compatible with Intel’s

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 90 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

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

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