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.

FEATURE summary
■ Supply voltage
    – VCC = 3 V to 3.6 V 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 33-MHz PCI clock
■ Programming time: 10 µs 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
■ Packages
    – ECOPACK® (RoHS compliant)