PRODUCT OVERVIEW
The M28F008 is a high-performance 8 Mbit (8,388,608 bit) memory organized as 1 Mbyte (1,048,576 bytes) of 8 bits each. Sixteen 64 Kbyte (65,536 byte) blocks are included on the M28F008. A memory map is shown in Figure 4 of this specification. A block erase operation erases one of the sixteen blocks of memory in typically 1.6 seconds, independent of the remaining blocks. Each block can be independently erased and written 10,000 cycles. Erase Suspend mode allows system software to suspend block erase to read data or execute code from any other block of the M28F008.

■ High-Density Symmetrically Blocked Architecture
    — Sixteen 64 Kbyte Blocks
■ Extended Cycling Capability
    — 10K Block Erase Cycles Minimum
    — 160K Block Erase Cycles per Chip
■ Automated Byte Write and Block Erase
    — Command User Interface
    — Status Register
■ System Performance Enhancements
    — RY/BY Status Output
    — Erase Suspend Capability
■ SRAM-Compatible Write Interface
■ Very High-Performance Read
    — 100 ns Maximum Access Time
■ Hardware Data Protection Feature
    — Erase/Write Lockout during Power Transitions
■ Industry Standard Packaging
    — 40-Lead Sidebrazed DIP
    — 42-Lead Flatpack
■ ETOXTM Nonvolatile Flash Technology
    — 12V Byte Write/Block Erase
■ Independent Software Vendor Support
    — Microsoft* Flash File System (FFS)