28F004BX-B Ver la hoja de datos (PDF) - Intel

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componentes Descripción

Fabricante

28F004BX-B

4-MBIT (256K X 16, 512K X 8) BOOT BLOCK FLASH MEMORY FAMILY

Intel 

28F400BX-T B 28F004BX-T B

ADDITIONAL INFORMATION

References

Order Number

290448

290449

290450

290531

290530

290539

292098

292148

292178

292130

292154

Document

28F002 200BX-T B 2-Mbit Boot Block Flash Memory Datasheet

28F002 200BL-T B 2-Mbit Low Power Boot Block Flash Memory Datasheet

28F004 400BL-T B 4-Mbit Low Power Boot Block Flash Memory Datasheet

2-Mbit SmartVoltage Boot Block Flash Memory Family Datasheet

4-Mbit SmartVoltage Boot Block Flash Memory Family Datasheet

8-Mbit SmartVoltage Boot Block Flash Memory Family Datasheet

AP-363 ‘‘Extended Flash BIOS Concepts for Portable Computers’’

AP-604 ‘‘Using Intel’s Boot Block Flash Memory Parameter Blocks to Replace

EEPROM’’

AP-623 ‘‘Multi-Site Layout Planning Using Intel’s Boot Block Flash Memory’’

AB-57 ‘‘Boot Block Architecture for Safe Firmware Updates’’

AB-60 ‘‘2 4 8-Mbit SmartVoltage Boot Block Flash Memory Family’’

Revision History

Number

Description

-001 Original Version

-002

Removed -70 speed bin

Integrated -70 characteristics into -60 speed bin

Added Extended Temperature characteristics

Modified BYTE Timing Diagram

-003

PWD renamed to RP for JEDEC standardization compatibility

Combined VCC Read current for 28F400BX Word-Wide Mode and Byte-Wide Mode and

28F004BX Byte-Wide Mode in DC Characteristics tables

Added Boot Black Unlock Current specifications in DC Characteristics tables

Improved ICCR and ICCW in DC Characteristics Extended Temperature Operation table

Improved tAVAV tAVQV tELQV tGLQV tEHQZ tGHQZ tFHQV and tFLQZ specifications for

Extended Temperature Operations AC Characteristics Read and Write Operations

-004

Added specifications for 120 ns access time product version 28F400BX-120 and

28F004BX-120

Included permanent change on write timing parameters for -80 ns product versions Write

pulse width (tWP and tCP) increases from 50 ns to 60 ns Write pulse width high (tWPH and

tCPH) decreases from 30 ns to 20 ns Total write cycle time (tWC) remains unchanged

Added ICCR test condition note for typical frequency value in DC Characteristics table

Added IOH CMOS specification

Added 28F400BX interface to Intel386TMEX Embedded Processor block diagram

Added description of how to design for upgrading to SmartVoltage Boot Block products

-005 Added references to input rise fall times

50

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