GENERAL DESCRIPTION

The A49FL004 is a 4 Mbit 3.0 Volt-only Flash Memories used for BIOS storage in PCs and Notebooks. This device is 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 device conforms to Intel® Low Pin Count (LPC) Interface specification revision 1.1 and also is compatible with Intel 82802 Firmware Hub (FWH) for most PC and Notebook applications.

FEATURES

• Single Power Supply Operation

- Low voltage range: 3.0 V - 3.6 V

• Standard Intel Firmware Hub/LPC Interface

- Read compatible to Intel® 82802 Firmware Hub devices

- Conforms to Intel LPC Interface Specification Revision 1.1

• Memory Configuration

- 512K x 8 (4 Mbit)

• Block Architecture

- Uniform 4 KBytes Sectors

- Uniform 64 KByte overlay blocks

- Support full chip erase for Address/Address Multiplexed (A/A Mux) mode

• Automatic Erase and Program Operation

- Build-in automatic program verification for extended product endurance

- Typical 10 µs/byte programming time

- Typical x s sector erase time

- Typical y s block erase time

- Typical z s chip erase time

• Two Configurable Interfaces

- In-System hardware interface: Auto detection of Firmware Hub (FWH) or Low Pin Count (LPC) Interface for in-system read and write operations

- Address/Address Multiplexed (A/A Mux) Interface for programming on EPROM Programmers during manufacturing

• Firmware Hub (FWH)/Low Pin Count (LPC) Mode

- 33 MHz synchronous operation with PCI bus

- 5-signal communication interface for in-system read and write operations

- Standard SDP Command Set

- Data Polling and Toggle Bit features

- Block Locking Register for all blocks

- Register-based read and write protection for each block

- 4 ID pins for multiple chips selection

- 5 GPI pins for General Purpose Input Register

- TBL pin for hardware write protection to Boot Block

- WP pin for hardware write protection to whole memory array except Boot Block

• Address/Address Multiplexed (A/A Mux) Mode

- 11-pin multiplexed address and 8-pin data I/O interface

- Supports fast programming on EPROM programmers

- Standard SDP Command Set

- Data Polling and Toggle Bit features

• Lower Power Consumption

- Typical 12mA active read current

- Typical 17mA program/erase current

• High Product Endurance

- Guarantee 100,000 program/erase cycles per single sector (preliminary)

- Minimum 20 years data retention

• Compatible Pin-out and Packaging

- 32-pin (8 mm x 14 mm) TSOP

- 32-pin PLCC

- Optional lead-free (Pb-free) package

• Hardware Data Protection