A49LF004 Flash Memory Datasheet

A49LF004 Datasheet, PDF, Equivalent


Part Number

A49LF004

Description

4 Mbit CMOS 3.3Volt-only Firmware Hub Flash Memory

Manufacture

AMIC Technology

Total Page 30 Pages
Datasheet
Download A49LF004 Datasheet


A49LF004
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Preliminary
A49LF004
4 Mbit CMOS 3.3Volt-only Firmware Hub Flash Memory
Document Title
4 Mbit CMOS 3.3 Volt-only Firmware Hub Flash Memory
Revision History
Rev. No. History
0.0 Initial issue
Issue Date
November 21, 2003
Remark
Preliminary
PRELIMINARY (November, 2003, Version 0.0)
AMIC Technology, Corp.

A49LF004
Preliminary
A49LF004
4 Mbit CMOS 3.3Volt-only Firmware Hub Flash Memory
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
• Compatible Pin-out and Packaging
- 32-pin (8 mm x 14 mm) TSOP (TYPE I)
- 32-pin PLCC
GENERAL DESCRIPTION
The A49LF004 flash memory device is designed to be read-
compatible 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. It provides protection for the storage and
update of code and data in addition to adding system
design flexibility through five general-purpose inputs. Two
interface modes are supported by the A49LF004: Firmware
Hub (FWH) Interface mode for In-System programming and
Address/Address Multiplexed (A/A Mux) mode for fast
factory programming of PC-BIOS applications.
The memory is divided into eight uniform 64Kbyte blocks
that can be erased independently without affecting the data
in other blocks. Blocks also can be protected individually to
prevent accidental Program or Erase commands from
modifying the memory. The Program and Erase operations
are executed by issuing the Program/Erase commands into
the command interface by which activating the internal
control logic to automatically process the Program/Erase
procedures. The device can be programmed on a byte-by-
byte basis after performing the Erase operation. In addition
to the Block Erase operation, the Chip Erase feature is
provided in A/A Mux mode that allows the whole memory to
be erased in one single Erase operation. The A49LF004
provides the status detection such as Data# Polling and
Toggle Bit Functions in both FWH and A/A Mux modes. The
process or completion of Program and Erase operations
can be detected by reading the status bits.
The A49LF004 is offered in 32-lead TSOP and 32-lead
PLCC packages. See Figures 1 and 2 for pin assignments
and Table 1 for pin descriptions.
PRELIMINARY (November, 2003, Version 0.0)
1
AMIC Technology, Corp.


Features www.DataSheet4U.com A49LF004 4 Mbit CMO S 3.3Volt-only Firmware Hub Flash Memor y Preliminary Document Title 4 Mbit CMO S 3.3 Volt-only Firmware Hub Flash Memo ry Revision History Rev. No. 0.0 Histo ry Initial issue Issue Date November 2 1, 2003 Remark Preliminary PRELIMINAR Y (November, 2003, Version 0.0) AMIC Technology, Corp. A49LF004 4 Mbit CMOS 3.3Volt-only Firmware Hub Flash Memory Preliminary FEATURES • Single Power Supply Operation Low voltage range: 3.0 V - 3.6 V for Read and Write Operation s • Standard Intel Firmware Hub Inter face Read compatible to Intel® 82802 F irmware Hub devices • Memory Configur ation 512K x 8 (4 Mbit) • Block Archi tecture 4Mbit: eight uniform 64KByte bl ocks Supports full chip erase for Addre ss/Address Multiplexed (A/A Mux) mode Automatic Erase and Program Operatio n Embedded Byte Program and Block/Chip Erase algorithms Typical 10 µs/byte pr ogramming time Typical 1s block erase t ime • Two Operational Modes Firmware Hub Interface (FWH) Mode for in-system.
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