4-MBlT (256K x 16, 512K x 8) LOW-POWER BOOT BLOCK FLASH MEMORY FAMILY

Intel’s 4-Mbit Low Power 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 Low Power Flash Memory Family enhances the Boot Block Architecture by adding more density and blocks, x8/x16 input/output control, very low power, very high speed, an industry standard ROM compatible pinout and surface mount packaging. The 4-Mbit low power flash family opens a new capability for 3V battery-operated portable systems and is an easy upgrade to Intel’s 2-Mbit Low Power Boot Block Flash Memory Family.

■ Low Voltage Operation for Very Low-Power Portable Applications
   — VCC = 3.0V–3.6V Read
   — VCC = 3.15V–3.6V Program/Erase
■ Expanded Temperature Range
   — -20°C to +70°C
■ x8/x16 Input/Output Architecture
   — 28F400BL-T, 28F400BL-B
   — For High Performance and High Integration 16-bit and 32-bit CPUs
■ x8-only Input/Output Architecture
   — 28F004BL-T, 28F004BL-B
   — For Space Constrained 8-bit Applications
■ Upgradeable to Intel’s SmartVoltage Products
■ Optimized High Density Blocked Architecture
   — One 16-KB Protected Boot Block
   — Two 8-KB Parameter Blocks
   — One 96-KB Main Block
   — Three 128-KB Main Blocks
   — Top or Bottom Boot Locations
■ Extended Cycling Capability
   — 10,000 Block Erase Cycles
■ Automated Word/Byte Write and Block Erase
   — Command User Interface
   — Status Registers
   — Erase Suspend Capability
■ SRAM-Compatible Write Interface
■ Automatic Power Savings Feature
   — 0.8 mA typical ICC Active Current in Static Operation
■ Very High-Performance Read
   — 150 ns Maximum Access Time
   — 65 ns Maximum Output Enable Time
■ Low Power Consumption
   — 15 mA Typical Active Read Current
■ Reset/Deep Power-Down Input:
   — 0.2 μA ICC Typical
   — Acts as Reset for Boot Operations
■ Write Protection for Boot Block
■ Hardware Data Protection Feature
   — Erase/Write Lockout During Power Transitions
■ Industry Standard Surface Mount Packaging
   — 28F400BL: JEDEC ROM
                           Compatible
                           44-Lead PSOP
                           56-Lead TSOP
   — 28F004BL: 40-Lead TSOP
■ 12V Word/Byte Write and Block Erase
   — VPP = 12V ±5% Standard
■ ETOXTM III Flash Technology
   — 3.3V Read