GENERAL DESCRIPTION
The IS49FL004 is 4 Mbit 3.3 Volt-only Flash Memories used as BIOS in PCs and Notebooks. These devices are designed to use a single low voltage, ranging from 3.0 Volt to 3.6 Volt, power supply to perform in-system or off-system read, erase and program operations. The 12.0 Volt V power supply are not required for the program and erase operations of devices. The devices conform to Intel® Low Pin Count (LPC) Interface specification revision 1.1 and also read-compatible with Intel 82802 Firmware Hub (FWH) for most PC and Notebook applications. The IS49FL004 support two configurable interfaces: In-system hardware interface which can automatic de- tect the FWH or LPC memory cycle for in-system read and write operations, and Address/Address Multiplexed (A/ A Mux) interface for fast manufacturing on EPROM Programmers. These devices are designed to work with both Intel Family chipset and Non-Intel Family Chipset platforms, it will provide PC and Notebook manufacturers great flexibility and simplicity for design, procurement, and material inventory.