參數(shù)資料
型號(hào)： AT49LW040-33TC
廠商： ATMEL CORP
元件分類： DRAM
英文描述： 8-megabit and 4-megabit Firmware Hub Flash Memory
中文描述： 512K X 8 FLASH 3V PROM, 11 ns, PDSO40
封裝： 10 X 20 MM, PLASTIC, MO-142CD, TSOP1-40
文件頁數(shù)： 1/34頁
文件大?。?/td> 465K
代理商： AT49LW040-33TC
1
Pin Configurations
Features
Low Pin Count (LPC) BIOS Device
Functions as Firmware Hub for Intel 810, 810E, 820, 840 Chipsets
8M or 4M Bits of Flash Memory for Platform Code/Data Storage
– Uniform, 64-Kbyte Memory Sectors
– Available in 8M Bits (AT49LW080) and 4M Bits (AT49LW040)
– Automated Byte-program and Sector-erase Operations
Two Configurable Interfaces
– Firmware Hub (FWH) Interface for In-System Operation
– Address/Address Multiplexed (A/A Mux) Interface for Programming during
Manufacturing
Firmware Hub Hardware Interface Mode
– 5-signal Communication Interface Supporting x8 Reads and Writes
– Read and Write Protection for Each Sector Using Software-controlled Registers
– Two Hardware Write-protect Pins: One for the Top Boot Sector, One for All Other
Sectors
– Five General-purpose Inputs, GPIs, for Platform Design Flexibility
– Operates with 33 MHz PCI Clock and 3.3V I/O
Address/Address Multiplexed (A/A Mux) Interface
– 11-pin Multiplexed Address and 8-pin Data Interface
– Supports Fast On-board or Out-of-system Programming
Power Supply Specifications
– V
CC
: 3.3V ± 0.3V
– V
PP
: 3.3V and 12V for Fast Programming
Industry-standard Packages
– (40-lead TSOP or 32-lead PLCC)
Description
The AT49LW080 and the AT49LW040 are Flash memory devices designed to be com-
patible with the Intel 82802AC and the Intel 82802AB Firmware Hub (FWH) devices
for PC-Bios Application. A feature of the AT49LW080/040 is the nonvolatile memory
core. The high-performance memory is arranged in eight (AT49LW040) or sixteen
(AT49LW080) 64-Kbyte sectors (see page 13).
8-megabit and
4-megabit
Firmware Hub
Flash Memory
AT49LW080
AT49LW040
PLCC
5
6
7
8
9
10
11
12
13
29
28
27
26
25
24
23
22
21
[A7] FGPI1
[A6] FGPI0
[A5] WP
[A4] TBL
[A3] ID3
[A2] ID2
[A1] ID1
[A0] ID0
[I/O0] FWH0
IC (V
IL
) [IC(V
IH
)]
GNDa [GNDa]
VCCa [VCCa]
GND [GND]
VCC [VCC]
INIT [OE]
FWH4 [WE]
RFU [RY/BY]
RFU [I/O7]
4
3
2
1
3
3
3
1
1
1
1
1
1
2
[
[
[
[
[
[
[
F
F
R
V
V
C
F
[ ] Designates A/A Mux Mode
TSOP
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
(NC) NC
[IC (V
IH
)] IC (V
IL
)
[NC] NC
[NC] NC
[NC] NC
[NC] NC
[A10] FGPI4
[NC] NC
[R/C] CLK
[VCC] VCC
[VPP] VPP
[RST] RST
[NC] NC
[NC] NC
[A9] FGPI3
[A8] FGPI2
[A7] FGPI1
[A6] FGPI0
[A5] WP
[A4] TBL
GNDa [GNDa]
VCCa [VCCa]
FWH4 [WE]
INIT [OE]
RFU [RY/BY]
RFU [I/O7]
RFU [I/O6]
RFU [I/O5]
RFU [I/O4]
VCC [VCC]
GND [GND]
GND [GND]
FWH3 [I/O3]
FWH2 [I/O2]
FWH1 [I/O1]
FWH0 [I/O0]
ID0 [A0]
ID1 [A1]
ID2 [A2]
ID3 [A3]
[ ] Designates A/A Mux Mode
Rev. 1966C–FLASH–03/02
相關(guān)PDF資料
PDF描述
AT49LW080 8-megabit and 4-megabit Firmware Hub Flash Memory
AT49LW080-33JC 8-megabit and 4-megabit Firmware Hub Flash Memory
AT49LW080-33TC 8-megabit and 4-megabit Firmware Hub Flash Memory
AT49SN12804 128-megabit (8M x 16) Burst/Page Mode 1.8-volt Flash Memory
AT49SN12804-70CI 128-megabit (8M x 16) Burst/Page Mode 1.8-volt Flash Memory
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