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AT49LW040 Datasheet

  • AT49LW040

  • 8-megabit and 4-megabit Firmware Hub Flash Memory

  • 34頁

  • ATMEL   ATMEL

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Features
鈥?/div>
Low Pin Count (LPC) BIOS Device
鈥?/div>
Functions as Firmware Hub for Intel 810, 810E, 820, 840 Chipsets
鈥?/div>
8M or 4M Bits of Flash Memory for Platform Code/Data Storage
鈥?Uniform, 64-Kbyte Memory Sectors
鈥?Available in 8M Bits (AT49LW080) and 4M Bits (AT49LW040)
鈥?Automated Byte-program and Sector-erase Operations
Two Configurable Interfaces
鈥?Firmware Hub (FWH) Interface for In-System Operation
鈥?Address/Address Multiplexed (A/A Mux) Interface for Programming during
Manufacturing
Firmware Hub Hardware Interface Mode
鈥?5-signal Communication Interface Supporting x8 Reads and Writes
鈥?Read and Write Protection for Each Sector Using Software-controlled Registers
鈥?Two Hardware Write-protect Pins: One for the Top Boot Sector, One for All Other
Sectors
鈥?Five General-purpose Inputs, GPIs, for Platform Design Flexibility
鈥?Operates with 33 MHz PCI Clock and 3.3V I/O
Address/Address Multiplexed (A/A Mux) Interface
鈥?11-pin Multiplexed Address and 8-pin Data Interface
鈥?Supports Fast On-board or Out-of-system Programming
Power Supply Specifications
鈥?V
CC
: 3.3V 鹵 0.3V
鈥?V
PP
: 3.3V and 12V for Fast Programming
Industry-standard Packages
鈥?(40-lead TSOP or 32-lead PLCC)
鈥?/div>
鈥?/div>
8-megabit and
4-megabit
Firmware Hub
Flash Memory
AT49LW080
AT49LW040
鈥?/div>
鈥?/div>
鈥?/div>
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).
Pin Configurations
PLCC
FGPI2 [A8]
FGPI3 [A9]
RST [RST]
VPP [VPP]
VCC [VCC]
CLK [R/C]
FGPI4 [A10]
(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
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
TSOP
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
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
[I/O1] FWH1
[I/O2] FWH2
[GND] GND
[I/O3] FWH3
[I/O4] RFU
[I/O5] RFU
[I/O6] RFU
14
15
16
17
18
19
20
[A7] FGPI1
[A6] FGPI0
[A5] WP
[A4] TBL
[A3] ID3
[A2] ID2
[A1] ID1
[A0] ID0
[I/O0] FWH0
5
6
7
8
9
10
11
12
13
4
3
2
1
32
31
30
29
28
27
26
25
24
23
22
21
IC (V
IL
) [IC(V
IH
)]
GNDa [GNDa]
VCCa [VCCa]
GND [GND]
VCC [VCC]
INIT [OE]
FWH4 [WE]
RFU [RY/BY]
RFU [I/O7]
[ ] Designates A/A Mux Mode
Rev. 1966C鈥揊LASH鈥?3/02
1

AT49LW040相關型號PDF文件下載

  • 型號
    版本
    描述
    廠商
    下載
  • 英文版
    PROTECTIVE GUARD KB SER SQ&RND
  • 英文版
    COVER DUST POLY FOR KB SERIES
  • 英文版
    CENTER BARRIER BLACK POLY LB SER
  • 英文版
    PROTECTIVE GUARD FOR LB SER SQ
  • 英文版
    Round Pushbutton Switch Cap Black Slip On
  • 英文版
    Round Pushbutton Switch Cap Red Slip On
  • 英文版
    128K x 8 (1M bit), 2.7-Volt (BV)/3-Volt (LV) Read and 2.7-Vo...
  • 英文版
    1-Megabit 128K x 8 5-volt Only Flash Memory
    ATMEL
  • 英文版
    1-Megabit 128K x 8 5-volt Only Flash Memory
    ATMEL [ATM...
  • 英文版
    2-Megabit 256K x 8 5-volt Only Flash Memory
    ATMEL
  • 英文版
    2-megabit (256K x 8) 5-volt Only Flash Memory
    ATMEL [ATM...
  • 英文版
    2-Megabit 256K x 8 5-volt Only Flash Memory
    ATMEL [ATM...
  • 英文版
    4-Megabit CMOS Flash Memory
    ETC
  • 英文版
    ATMEL Corporation [4-Megabit 512K x 8/ 256K x 16 CMOS Flash...
    ATMEL
  • 英文版
    8-Megabit 5-volt Only Flash Memory
    ETC
  • 英文版
    8-Megabit 1M x 8 5-volt Only Flash Memory
    ATMEL
  • 英文版
    ATMEL Corporation [1-Megabit 128K x 8 5-volt Only CMOS Flas...
    ATMEL
  • 英文版
    ATMEL Corporation [2-Megabit 256K x 8 5-volt Only CMOS Flas...
    ATMEL
  • 英文版
    4 Megabit 512K x 8 5-volt Only CMOS Flash Memory
    ATMEL
  • 英文版
    4-Megabit 512K x 8 5-volt Only CMOS Flash Memory
    ATMEL [ATM...

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