SUMMARY DESCRIPTION
The M50FW040 is a 4 Mbit (512Kb x8) non-volatile memory that can be read, erased and reprogrammed. These operations can be performed using a single low voltage (3.0 to 3.6V) supply. For fast erasing in production lines an optional 12V power supply can be used to reduce the erasing time.

FEATURES SUMMARY
■ SUPPLY VOLTAGE
    – VCC = 3V to 3.6V for Program, Erase and Read Operations
    – VPP = 12V for Fast Erase (optional)
■ TWO INTERFACES
    – Firmware Hub (FWH) Interface for embedded operation with PC Chipsets.
    – Address/Address Multiplexed (A/A Mux) Interface for programming equipment compatibility.
■ FIRMWARE HUB (FWH) HARDWARE INTERFACE MODE
    – 5 Signal Communication Interface supporting Read and Write Operations
    – Hardware Write Protect Pins for Block Protection
    – Register Based Read and Write Protection
    – 5 Additional General Purpose Inputs for platform design flexibility
    – Synchronized with 33MHz PCI clock
■ PROGRAMMING TIME: 10µs typical
■ 8 UNIFORM 64 Kbyte MEMORY BLOCKS
■ PROGRAM/ERASE CONTROLLER
    – Embedded Byte Program and Block Erase algorithms
    – Status Register Bits
■ PROGRAM and ERASE SUSPEND
    – Read other Blocks during Program/Erase Suspend
    – Program other Blocks during Erase Suspend
■ FOR USE in PC BIOS APPLICATIONS
■ ELECTRONIC SIGNATURE
    – Manufacturer Code: 20h
    – Device Code: 2Ch