AT49LW080-33JC SL383 Atmel, AT49LW080-33JC SL383 Datasheet - Page 3

• Manufacturer Part Number: AT49LW080-33JC SL383
• Description: IC FLASH 8MBIT 33MHZ 32PLCC
• Manufacturer: Atmel

Specifications of AT49LW080-33JC SL383

• Format - Memory: FLASH
• Memory Type: FLASH
• Memory Size: 8M (1M x 8)
• Speed: 33MHz
• Interface: Parallel
• Voltage - Supply: 3 V ~ 3.6 V
• Operating Temperature: 0°C ~ 85°C
• Package / Case: 32-PLCC
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

2.3
2.4
3. Block Diagram
1966G–FLASH–3/05
Firmware Hub Interface
Address/Address Multiplexed Interface
The Firmware Hub (FWH) interface is designed to work with the I/O Controller Hub (ICH) during
platform operation.
The FWH interface consists primarily of a five-signal communication interface used to control the
operation of the device in a system environment. The buffers for this interface are PCI compli-
ant. To ensure the effective delivery of security and manageability features, the FWH interface is
the only way to get access to the full feature set of the device. The FWH interface is equipped to
operate at 33 MHz, synchronous with the PCI bus.
The A/A Mux interface is designed as a programming interface for OEMs to use during mother-
board manufacturing or component pre-programming.
The A/A Mux refers to the multiplexed row and column addresses in this interface. This
approach is required so that the device can be tested and programmed quickly with automated
test equipment (ATE) and PROM programmers in the OEM’s manufacturing flow. This interface
also allows the device to have an efficient programming interface with potentially large future
densities, while still fitting into a 32-pin package. Only basic reads, programming, and erase of
the nonvolatile memory sectors can be performed through the A/A Mux interface. In this mode
FWH features, security features and registers are unavailable. A row/column (R/C) pin deter-
mines which set of addresses “rows or columns” are latched.
FGPI (4:0)
I/O7 - I/O0
FWH (4:0)
A10 - A0
ID (3:0)
RY/BY
CLK
INIT
TBL
R/C
WP
WE
OE
INTERFACE
INTERFACE
A/A MUX
FWH
RST
CONTROL
ARRAY
LOGIC
FLASH
AT49LW080
IC
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