49LF004
Description
The A49LF004 flash memory device is designed to be readcompatible with the Intel 82802 Firmware Hub (FWH) device for PC-BIOS application. This device is designed to use a single low voltage, range from 3.0 Volt to 3.6 Volt power supply to perform in-system or off-system read and write operations.
Key Features
- Single Power Supply Operation Low voltage range: 3.0 V - 3.6 V for Read and Write Operations
- Standard Intel Firmware Hub Interface Read compatible to Intel® 82802 Firmware Hub devices
- Memory Configuration 512K x 8 (4 Mbit)
- Block Architecture 4Mbit: eight uniform 64KByte blocks Supports full chip erase for Address/Address Multiplexed (A/A Mux) mode
- Automatic Erase and Program Operation Embedded Byte Program and Block/Chip Erase algorithms Typical 10 µs/byte programming time Typical 1s block erase time
- Two Operational Modes Firmware Hub Interface (FWH) Mode for in-system operation Address/Address Multiplexed (A/A Mux) Interface Mode for programming equipment
- Firmware Hub (FWH) 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 (I/O7) and Toggle Bit (I/O6) features Block Locking Register for all blocks 4 ID pins for multi-chip 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 (I/O7) and Toggle Bit (I/O6) features
- Lower Power Consumption Typical 12mA active read current Typical 24mA program/erase current
- High Product Endurance Guarantee 100,000 program/erase cycles for each block Minimum 20 years data retention
