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AT49LL040 Datasheet

  • AT49LL040

  • 4M Low-pin count device

  • 28頁

  • ETC

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Features
鈥?/div>
Conforms to Intel LPC Interface Specification 1.0
鈥?/div>
4M Bits of Flash Memory for Platform Code/Data Storage
鈥?/div>
鈥?Automated Byte-program and Sector-erase Operations
Two Configurable Interfaces
鈥?Low Pin Count (LPC) Interface for In-System Operation
鈥?Address/Address Multiplexed (A/A Mux) Interface for Programming during
Manufacturing
Low Pin Count 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
Power Supply Specifications
鈥?V
CC
: 3.3V 鹵 0.3V
Industry-standard Package
鈥?40-lead TSOP or 32-lead PLCC
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
4-megabit
Low-pin Count
Flash Memory
AT49LL040
Description
The AT49LL040 is a Flash memory device designed to interface with the LPC bus for
PC Applications. A feature of the AT49LL040 is the nonvolatile memory core. The
high-performance memory is arranged in eleven sectors (see page 10).
The AT49LL040 supports two hardware interfaces: Low Pin Count (LPC) for in-system
operation and Address/Address Multiplexed (A/A Mux) for programming during manu-
facturing. The IC (Interface Configuration) pin of the device provides the control
between the interfaces. The interface mode needs to be selected prior to power-up or
before return from reset (RST or INIT low to high transition).
An internal Command User Interface (CUI) serves as the control center between the
two device interfaces (LPC and A/A Mux) and internal operation of the nonvolatile
memory. A valid command sequence written to the CUI initiates device automation.
Pin Configuration
PLCC
GPI2 [A8]
GPI3 [A9]
RST [RST]
VPP [VPP]
VCC [VCC]
CLK [R/C]
GPI4 [A10]
(NC) CE
[IC (V
IH
)] IC (V
IL
)
[NC] NC
[NC] NC
[NC] NC
[NC] NC
[A10] GPI4
[NC] NC
[R/C] CLK
[VCC] VCC
[VPP] VPP
[RST] RST
[NC] NC
[NC] NC
[A9] GPI3
[A8] GPI2
[A7] GPI1
[A6] GPI0
[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, Type I
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
GNDa [GNDa]
VCCa [VCCa]
LFRAME [WE]
INIT [OE]
RFU [RY/BY]
RFU [I/O7]
RFU [I/O6]
RFU [I/O5]
RFU [I/O4]
VCC [VCC]
GND [GND]
GND [GND]
LAD3 [I/O3]
LAD2 [I/O2]
LAD1 [I/O1]
LAD0 [I/O0]
ID0 [A0]
ID1 [A1]
ID2 [A2]
ID3 [A3]
[I/O1] LAD1
[I/O2] LAD2
[GND] GND
[I/O3] LAD3
[I/O4] RFU
[I/O5] RFU
[I/O6] RFU
14
15
16
17
18
19
20
[A7] GPI1
[A6] GPI0
[A5] WP
[A4] TBL
[A3] ID3
[A2] ID2
[A1] ID1
[A0] ID0
[I/O0] LAD0
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
)]
CE [NC]
NC
NC
VCC [VCC]
INIT [OE]
LFRAME [WE]
RFU [RY/BY]
RFU [I/O7]
[ ] Designates A/A Mux Mode
[ ] Designates A/A Mux Mode
Rev. 3343A鈥揊LASH鈥?/03
1

AT49LL040相關(guān)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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